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Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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1

Short-Term Wind Speed Forecasting for Power System Operations  

E-Print Network (OSTI)

Global large scale penetration of wind energy is accompanied by significant challenges due to the intermittent and unstable nature of wind. High quality short-term wind speed forecasting is critical to reliable and secure power system operations. This paper gives an overview of the current status of worldwide wind power developments and future trends, and reviews some statistical short-term wind speed forecasting models, including traditional time series models and advanced space-time statistical models. It also discusses the evaluation of forecast accuracy, in particular the need for realistic loss functions. New challenges in wind speed forecasting regarding ramp events and offshore wind farms are also presented.

Xinxin Zhu; Marc G. Genton

2011-01-01T23:59:59.000Z

2

Record of Decision for BPA Short-Term Marketing and Operating Arrangements (1/31/96)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

0 0 Federal Register / Vol. 61, No. 21 / Wednesday, January 31, 1996 / Notices Bonneville Power Administration Notice of Availability of Record of Decision for Short-Term Marketing and Operating Arrangements AGENCY: Bonneville Power Administration (BPA), Department of Energy (DOE). ACTION: Notice of Availability of Record of Decision (ROD). SUMMARY: BPA has decided to enter into short-term marketing and operational arrangements in order to participate continuously in the open electric power market. These arrangements would enable BPA to achieve the best reliability and expected economic outcome, as well as to best meet its environmental responsibilities, given diverse market conditions. This decision would support power cost control, enhance BPA competitiveness, and provide public benefits. The

3

Measuring Short-term Air Conditioner Demand Reductions for Operations and  

NLE Websites -- All DOE Office Websites (Extended Search)

Measuring Short-term Air Conditioner Demand Reductions for Operations and Measuring Short-term Air Conditioner Demand Reductions for Operations and Settlement Title Measuring Short-term Air Conditioner Demand Reductions for Operations and Settlement Publication Type Report LBNL Report Number LBNL-5330E Year of Publication 2012 Authors Bode, Josh, Michael J. Sullivan, and Joseph H. Eto Pagination 120 Date Published 01/2012 Publisher LBNL City Berkeley Keywords consortium for electric reliability technology solutions (certs), electricity markets and policy group, energy analysis and environmental impacts department Abstract Several recent demonstrations and pilots have shown that air conditioner (AC) electric loads can be controlled during the summer cooling season to provide ancillary services and improve the stability and reliability of the electricity grid. A key issue for integration of air conditioner load control into grid operations is how to accurately measure shorter-term (e.g., ten's of minutes to a couple of hours) demand reductions from AC load curtailments for operations and settlement. This report presents a framework for assessing the accuracy of shorter-term AC load control demand reduction measurements. It also compares the accuracy of various alternatives for measuring AC reductions - including methods that rely on regression analysis, load matching and control groups - using feeder data, household data and AC end-use data. A practical approach is recommended for settlement that relies on set of tables, updated annually, with pre-calculated load reduction estimates. The tables allow users to look up the demand reduction per device based on the daily maximum temperature, geographic region and hour of day and simplify the settlement process.

4

Measuring Short-term Air Conditioner Demand Reductions for Operations...  

NLE Websites -- All DOE Office Websites (Extended Search)

frequently without affecting customer comfort. A key issue for grid operations and electricity market settlement is how to accurately measure shorter-term (e.g., ten's of...

5

Measuring Short-term Air Conditioner Demand Reductions for Operations and Settlement  

NLE Websites -- All DOE Office Websites (Extended Search)

330E 330E Measuring Short-term Air Conditioner Demand Reductions for Operations and Settlement Josh Bode, Michael Sullivan, Joseph H. Eto January 2012 The work described in this report was funded by the Office of Electricity Delivery and Energy Reliability of the U.S. Department of Energy under Contract No. DE-AC02- 05CH11231. ERNEST ORLANDO LAWRENCE BERKELEY NATIONAL LABORATORY Disclaimer This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor The Regents of the University of California, nor any of their employees, makes any warranty, express or implied, or assumes any legal responsibility for the accuracy, completeness, or

6

Daily/Hourly Hydrosystem Operation : How the Columbia River System Responds to Short-Term Needs.  

SciTech Connect

The System Operation Review, being conducted by the Bonneville Power Administration, the US Army Corps of Engineers, and the US Bureau of Reclamation, is analyzing current and potential future operations of the Columbia River System. One goal of the System Operations Review is to develop a new System Operation Strategy. The strategy will be designed to balance the many regionally and nationally important uses of the Columbia River system. Short-term operations address the dynamics that affect the Northwest hydro system and its multiple uses. Demands for electrical power and natural streamflows change constantly and thus are not precisely predictable. Other uses of the hydro system have constantly changing needs, too, many of which can interfere with other uses. Project operators must address various river needs, physical limitations, weather, and streamflow conditions while maintaining the stability of the electric system and keeping your lights on. It takes staffing around the clock to manage the hour-to-hour changes that occur and the challenges that face project operators all the time.

Columbia River System Operation Review (U.S.)

1994-02-01T23:59:59.000Z

7

Enhanced Short-Term Wind Power Forecasting and Value to Grid Operations: Preprint  

DOE Green Energy (OSTI)

The current state of the art of wind power forecasting in the 0- to 6-hour time frame has levels of uncertainty that are adding increased costs and risk on the U.S. electrical grid. It is widely recognized within the electrical grid community that improvements to these forecasts could greatly reduce the costs and risks associated with integrating higher penetrations of wind energy. The U.S. Department of Energy has sponsored a research campaign in partnership with the National Oceanic and Atmospheric Administration (NOAA) and private industry to foster improvements in wind power forecasting. The research campaign involves a three-pronged approach: 1) a 1-year field measurement campaign within two regions; 2) enhancement of NOAA's experimental 3-km High-Resolution Rapid Refresh (HRRR) model by assimilating the data from the field campaign; and 3) evaluation of the economic and reliability benefits of improved forecasts to grid operators. This paper and presentation provides an overview of the regions selected, instrumentation deployed, data quality and control, assimilation of data into HRRR, and preliminary results of HRRR performance analysis.

Orwig, K.; Clark, C.; Cline, J.; Benjamin, S.; Wilczak, J.; Marquis, M.; Finley, C.; Stern, A.; Freedman, J.

2012-09-01T23:59:59.000Z

8

Short-Term Schedulability Analysis of Crude Oil Operations in Refinery With Oil Residency Time Constraint Using Petri Nets  

Science Conference Proceedings (OSTI)

A short-term schedule for oil refinery should arrange all the activities in every detail for the whole scheduling horizon, leading to a complex problem. There lacks efficient techniques and software tools for its solution applicable to industrial oil ... Keywords: Automated manufacturing system, Petri net (PN), hybrid Petri net, oil refinery, scheduling, short-term scheduling

NaiQi Wu; Feng Chu; Chengbin Chu; MengChu Zhou

2008-11-01T23:59:59.000Z

9

Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

(83/3Q) (83/3Q) Short-Term Energy Outlook iuarterly Projections August 1983 Energy Information Administration Washington, D.C. 20585 t rt jrt- .ort- iort- iort- iort- nort- lort- '.ort- ort- Tt- .-m .erm -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term Term .-Term -Term xrm Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy ^nergy -OJ.UUK Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term

10

Customization of the EPRI Artificial Neural Network Short-Term Load Forecaster (ANNSTLF) and User Support for the California Independent System Operator (CA-ISO)  

Science Conference Proceedings (OSTI)

Load forecasting is an important part of power system planning and operation. In the past, forecasting was achieved by extrapolating existing load data combined with other influencing factors. This method is no longer accurate enough. The Artificial Neural Network Short-Term Load Forecaster (ANNSTLF) is a tool for the quick and accurate prediction of hourly loads that provides the level of accuracy required by today's complex and competitive power markets. This report describes all the deliverables for t...

2002-11-19T23:59:59.000Z

11

Enhancements to ANNSTLF, EPRI's Short Term Load Forecaster  

Science Conference Proceedings (OSTI)

Reliable hourly load forecasts are important to electric utilities, power marketers, energy service providers, and independent system operators. To meet this need, EPRI's Artificial Neural Net Short Term Load Forecaster (ANNSTLF), which is already implemented at more than thirty-five utilities, was recently enhanced for greater accuracy and user friendliness.

1997-12-08T23:59:59.000Z

12

Particle Swarm Optimization Based on Cultural Algorithm for Short-Term Optimal Operation of Cascade Hydropower Stations  

Science Conference Proceedings (OSTI)

Difficulties likely exist in optimal reservoir operation along with discreteness and nonlinear constraints. Therefore, Particle Swarm Optimization based on Cultural Algorithm (PSO-CA) is presented in this paper for overcoming these defects. In this article ... Keywords: cultural algorithm, optimal operation of reservoir, particle swarm optimization

Wei Xie; Chang-ming Ji; Xin-wu Li

2009-08-01T23:59:59.000Z

13

Short-Term Energy Outlook  

U.S. Energy Information Administration (EIA)

U.S. Energy Information Administration | Short-Term Energy Outlook July 2013 1 July 2013 Short-Term Energy Outlook (STEO) Highlights The U.S. Energy Information ...

14

Short-Term Energy Outlook  

U.S. Energy Information Administration (EIA) Indexed Site

U.S. Energy Information Administration Independent Statistics & Analysis Short Short- -Term Energy Outlook Term Energy Outlook Chart Gallery for Chart Gallery for November...

15

Short-Term Energy Outlook  

U.S. Energy Information Administration (EIA)

DOE/EIA-0202(98/3Q) Distribution Category UC-950 Short-Term Energy Outlook July 1998 Energy Information Administration Office of Energy Markets and End Use

16

Short-Term Climate Predictions for Water Management  

Science Conference Proceedings (OSTI)

Short-term climate predictions (two weeks to two years) have many applications in operation of water supply and flood control facilities. They can influence use of water for irrigation, hydroelectric power production, flood control operation, ...

Charles A. McCullough

1983-11-01T23:59:59.000Z

17

Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

3 3 1 Short-Term Energy Outlook April 2003 Overview World Oil Markets. Crude oil prices fell sharply at the onset of war in Iraq, but the initial declines probably overshot levels that we consider to be generally consistent with fundamental factors in the world oil market. Thus, while near-term price averages are likely to be below our previous projections, the baseline outlook for crude oil prices (while generally lower) is not drastically different and includes an average for spot West Texas Intermediate (WTI) that is close to $30 per barrel in 2003 (Figure 1). The mix of uncertainties related to key oil production areas has changed since last month, as Venezuelan production has accelerated beyond previous estimates while Nigerian output has been reduced due to internal conflict.

18

Short-Term Forecast Validation of Six Models  

Science Conference Proceedings (OSTI)

The short-term forecast accuracy of six different forecast models over the western United States is described for January, February, and March 1996. Four of the models are operational products from the National Centers for Environmental ...

Bryan G. White; Jan Paegle; W. James Steenburgh; John D. Horel; Robert T. Swanson; Louis K. Cook; Daryl J. Onton; John G. Miles

1999-02-01T23:59:59.000Z

19

Wind Power Integration: Smoothing Short-Term Power Fluctuations  

Science Conference Proceedings (OSTI)

With the rapid growth of wind power generation, utility systems are beginning to feel the intermittent and variable nature of these wind resources in electricity transmission and distribution system operations. Both short-term power fluctuations resulting from gusty winds and longer term variations resulting from diurnal wind speed variations and shifting weather patterns can affect utility power delivery as well as grid operations. This report addresses the characteristics of short-term power fluctuatio...

2005-04-12T23:59:59.000Z

20

User's Guide Short-Term Energy Model  

Reports and Publications (EIA)

The personal computer version of the Energy Information Administration's (EIA) Short Term Energy Outlook, known simply as the Short-Term Energy Model, is a modeling system used to forecast future values for key energy variables. It replicates in a Windows environment most features of EIA's mainframe-based short-term modeling system, and adds capabilities that allow the user substitute assumptions to calculate alternative projections.

Information Center

1995-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

RESEARCH ARTICLE Empirical assessment of short-term variability from  

E-Print Network (OSTI)

RESEARCH ARTICLE Empirical assessment of short-term variability from utility-scale solar PV plants grid because additional system resources are required to maintain the grid's reliability. In this study-term variability; PV plant ramp rate; daily aggregate ramp rate; inverter shells *Correspondence Rob van Haaren

22

EIA Short -Term and Winter Fuels Outlook  

U.S. Energy Information Administration (EIA)

Short-Term Energy Outlook, October 2008 NASEO 2008/09 Winter Fuels Outlook Conference October 7, 2008 Washington, DC Howard Gruenspecht Acting ...

23

Short Term Energy Outlook - Energy Information Administration  

U.S. Energy Information Administration (EIA)

Projections: EIA, Short-Term Integrated Forecasting System database, and Office of Coal, Nuclear, Electric and Alternate Fuels (hydroelectric and nuclear).

24

Short Term Energy Outlook - Energy Information Administration  

U.S. Energy Information Administration (EIA)

Energy Information Administration/Short-Term Energy Outlook—February 2008 2 Global Petroleum OPEC left production targets unchanged at its February 1st ...

25

Short Term Energy Outlook - Energy Information Administration  

U.S. Energy Information Administration (EIA)

Energy Information Administration/Short-Term Energy Outlook—March 2008 2 Diesel prices are projected to show larger gains in 2008, averaging $3.45 per

26

Short Term Energy Outlook - Energy Information Administration  

U.S. Energy Information Administration (EIA)

Energy Information Administration/Short-Term Energy Outlook—January 2009 2 Global Petroleum Overview. The downward trend in oil prices continued in ...

27

Short Term Energy Outlook - Energy Information Administration  

U.S. Energy Information Administration (EIA)

Energy Information Administration/Short-Term Energy Outlook—December 2008 2 Global Petroleum Overview The increasing likelihood of a prolonged global ...

28

Reliability mathematics analysis on traction substation operation  

Science Conference Proceedings (OSTI)

In electrified railway traction power supply systems, the operational qualities and reliabilities of the main traction transformer loop is higher, but ones of bus output units is comparatively low. The traction transformer loop still works when output ... Keywords: Erlang distribution, Markov theory, life, reliability, traction substation, transformer

Hongsheng Su

2008-11-01T23:59:59.000Z

29

Definition: Interconnection Reliability Operating Limit | Open...  

Open Energy Info (EERE)

Terms System Operating Limit, System, Cascading Outage, smart grid References Glossary of Terms Used in Reliability Standards An inl LikeLike UnlikeLike You like this.Sign...

30

Measuring Short-term Air Conditioner Demand Reductions for  

E-Print Network (OSTI)

allow users to look up the demand reduction per device based on the daily maximum temperatureLBNL-5330E Measuring Short-term Air Conditioner Demand Reductions for Operations and Settlement-term Air Conditioner Demand Reductions for Operations and Settlement Josh Bode, Michael J. Sullivan Freeman

31

Short-Term Energy Outlook January 2014  

Gasoline and Diesel Fuel Update (EIA)

Chart Gallery for January 2014 Short-Term Energy Outlook U.S. Energy Information Administration Independent Statistics & Analysis 40 60 80 100 120 140 160 180 200 220 West Texas...

32

Comparisons of Short Term Load Forecasting using Artificial Neural Network and Regression Method  

E-Print Network (OSTI)

In power systems the next day’s power generation must be scheduled every day, day ahead short-term load forecasting (STLF) is a necessary daily task for power dispatch. Its accuracy affects the economic operation and reliability of the system greatly. Under prediction of STLF leads to insufficient reserve capacity preparation and in turn, increases the operating cost by using expensive peaking units. On the other hand, over prediction of STLF leads to the unnecessarily large reserve capacity, which is also related to high operating cost. the research work in this area is still a challenge to the electrical engineering scholars because of its high complexity. How to estimate the future load with the historical data has remained a difficulty up to now, especially for the load forecasting of holidays, days with extreme weather and other anomalous days. With the recent development of new mathematical, data mining and artificial intelligence tools, it is potentially possible to improve the forecasting result. This paper presents a new neural network based approach for short-term load forecasting that uses the most correlated weather data for training, validating and testing the neural network. Correlation analysis of weather data determines the input parameters of the neural networks. And its results compare to regression method. Index terms Load Forecasting, artificial neural network, short term

Mr. Rajesh Deshmukh; Dr. Amita Mahor

2011-01-01T23:59:59.000Z

33

Short-term hydropower production planning by stochastic programming  

Science Conference Proceedings (OSTI)

Within the framework of multi-stage mixed-integer linear stochastic programming we develop a short-term production plan for a price-taking hydropower plant operating under uncertainty. Current production must comply with the day-ahead commitments of ... Keywords: Hydropower, OR in energy, Scenarios, Stochastic programming

Stein-Erik Fleten; Trine Krogh Kristoffersen

2008-08-01T23:59:59.000Z

34

Short-term energy outlook: Quarterly projections  

SciTech Connect

The Energy Information Administration (EIA) quarterly forecasts of short-term energy supply, demand, and prices are revised in January, April, July, and October for publication in the Short-Term Energy Outlook (Outlook). An annual supplement analyzes previous forecast errors, compares recent projections by other forecasters, and discusses current topics of the short-term energy markets (see Short- Term Energy Outlook: Annual Supplement, DOE/EIA-0202). The principal users of the Outlook are managers and energy analysts in private industry and government. The projections in this volume extend through the fourth quarter of 1990. The forecasts are produced using the Short-term Integrated Forecasting System (STIFS). The STIFS model uses two principal driving variables: a macroeconomic forecast and world oil price assumptions. Macroeconomic forecasts produced by data Resources, Inc., (DRI), are adjusted by EIA to reflect EIA assumptions about the world price of crude oil, energy product prices, and other assumptions which may affect the macroeconomic forecast. EIA's Oil Market Simulation Model is used to project world oil prices. 20 refs., 17 figs., 16 tabs.

1989-07-01T23:59:59.000Z

35

Short-term energy outlook. Quarterly projections  

SciTech Connect

Energy Information Administration (EIA) quarterly forecasts of short-term energy supply, demand, and prices are revised in February, May, August, and November for publication in the Short-Term Energy Outlook, quarterly projections. Methodology volumes, which are published with the May and November issues, contain descriptions of the forecasting system and detailed analyses of the current issues that affect EIA's short-term energy forecasts. The forecasts are produced using the Short-Term Integrated Forecasting System (STIFS). Two principal driving variables are used in the STIFS model: the macroeconomic forecast and the world oil price assumptions. The macroeconomic forecasts, which are produced by Data Resources, Inc., (DRI), are adjusted by EIA in cases where EIA projections of the world price of crude oil differ from DRI estimates. EIA's Oil Market Simulation Model is used to project the world oil prices. The three projections for petroleum supply and demand are based on low, medium, and high economic growth scenarios which incorporate high, medium, and low crude oil price trajectories. In general, the following discussion of the forecast refers to the medium, or base case, scenario. Total petroleum consumption sensitivities, using varying assumptions about the level of price, weather, and economic activity are tabulated.

1983-08-01T23:59:59.000Z

36

Short Term Energy Outlook - Energy Information Administration  

U.S. Energy Information Administration (EIA)

The forecasts were generated by simulation of the Short-Term Integrated Forecasting System. 02-03 03-04 04-05 05-06 06-07 Avg.02-07 07-08 08-09 % Change Natural Gas

37

Electricity storage for short term power system service (Smart...  

Open Energy Info (EERE)

storage for short term power system service (Smart Grid Project) Jump to: navigation, search Project Name Electricity storage for short term power system service Country Denmark...

38

Implications of Wide-Area Geographic Diversity for Short- Term...  

NLE Websites -- All DOE Office Websites (Extended Search)

Implications of Wide-Area Geographic Diversity for Short- Term Variability of Solar Power Title Implications of Wide-Area Geographic Diversity for Short- Term Variability of Solar...

39

Washington DC Reliability Requirements and the Need to Operate...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Washington DC Reliability Requirements and the Need to Operate Mirant's Potomac River Generation Station to Support Local Area Reliability (Oak Ridge National Laboratory 2005)...

40

Why Do Emerging Economies Borrow Short Term?  

E-Print Network (OSTI)

We argue that emerging economies borrow short term due to the high risk premium charged by international capital markets on long-term debt. First, we present a model where the debt maturity structure is the outcome of a risk sharing problem between the government and bondholders. By issuing long-term debt, the government lowers the probability of a liquidity crisis, transferring risk to bondholders. In equilibrium, this risk is reflected in a higher risk premium and borrowing cost. Therefore, the government faces a trade-off between safer long-term borrowing and cheaper short-term debt. Second, we construct a new database of sovereign bond prices and issuance. We show that emerging economies pay a positive term premium (a higher risk premium on long-term bonds than on short-term bonds). During crises, the term premium increases, with issuance shifting toward shorter maturities. This suggests that changes in bondholders ’ risk aversion are important to understand emerging market crises.

unknown authors

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Economic Evaluation of Short-Term Wind Power Forecasts in ERCOT: Preliminary Results; Preprint  

DOE Green Energy (OSTI)

Historically, a number of wind energy integration studies have investigated the value of using day-ahead wind power forecasts for grid operational decisions. These studies have shown that there could be large cost savings gained by grid operators implementing the forecasts in their system operations. To date, none of these studies have investigated the value of shorter-term (0 to 6-hour-ahead) wind power forecasts. In 2010, the Department of Energy and National Oceanic and Atmospheric Administration partnered to fund improvements in short-term wind forecasts and to determine the economic value of these improvements to grid operators, hereafter referred to as the Wind Forecasting Improvement Project (WFIP). In this work, we discuss the preliminary results of the economic benefit analysis portion of the WFIP for the Electric Reliability Council of Texas. The improvements seen in the wind forecasts are examined, then the economic results of a production cost model simulation are analyzed.

Orwig, K.; Hodge, B. M.; Brinkman, G.; Ela, E.; Milligan, M.; Banunarayanan, V.; Nasir, S.; Freedman, J.

2012-09-01T23:59:59.000Z

42

Short-term scheduling of cascade reservoirs using an immune algorithm-based particle swarm optimization  

Science Conference Proceedings (OSTI)

This paper presents a new approach for short-term hydropower scheduling of reservoirs using an immune algorithm-based particle swarm optimization (IA-PSO). IA-PSO is employed by coupling the immune information processing mechanism with the particle swarm ... Keywords: Cascade reservoirs, Immune algorithm-based particle swarm optimization, Short-term operations

Xiang Fu; Anqiang Li; Liping Wang; Changming Ji

2011-09-01T23:59:59.000Z

43

DOE/EIA-0202(88/3Q) Energy Information Administration Short-Term  

Gasoline and Diesel Fuel Update (EIA)

3Q) 3Q) Energy Information Administration Short-Term Energy Outlook Quarterly Projections July 1988 Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy . oi Lor L- . ; Short-Term : Short-Term : Short-Term : Short-Term : Short-Term : Short-Term ; Short-Term . Short-Term : Short-Term : Short-Term . Short-Term : Short-Term : Short-Term ; Short-Term : Short-Term . Short-Term : Short-Term : Short-Term : Short-Term : Short-Term . Short-Term : Short-Term : Short-Term ; Short-Term . Short-Term Ent, Energ,, Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Ene r F- Ou Out, Outlc Outloc Outloo. Outlook Outlook Outlook Outlool Outlook Outlook Outlook Outlool

44

DOE/EIA-0202(87/3Q) Energy Information Administration Short-Term  

Gasoline and Diesel Fuel Update (EIA)

3Q) 3Q) Energy Information Administration Short-Term Energy Outlook Quarterly Projections July 1987 aergy i . Energy ' Energy Energy Energy i Energy i . Energy . Energy Energy Energy . Energy . Energy Energy Energy Energy i Energy . Energy . Energy Energy Energy Energy . Energy "nergy ; Short-Term : Short-Term . Short-Term : Short-Term : Short-Term ; Short-Term : Short-Term ; Short-Term : Short-Term : Short-Term ; Short-Term ; Short-Term ; Short-Term : Short-Term : Short-Term ; Short-Term ; Short-Term ; Short-Term ; Short-Term : Short-Term : Short-Term ; Short-Term : Short-Term ; Short-Term ; Short-Term ; Short-T'- Ent. Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energv Ene1" F- Ou Out, Outlc Outloc.

45

DOE/EIA-0202(88/2Q) Energy Information Administration Short-Term  

Gasoline and Diesel Fuel Update (EIA)

2Q) 2Q) Energy Information Administration Short-Term Energy Outlook Quarterly Projections April 1988 aergy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy E nergy Energy Energy Energy Energy '? nergy Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook '"""look Short-Terni Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term

46

Short-Term Energy Outlook Figures  

U.S. Energy Information Administration (EIA) Indexed Site

Independent Statistics & Analysis" Independent Statistics & Analysis" ,"U.S. Energy Information Administration" ,"Short-Term Energy Outlook Figures, December 2013" ,"U.S. Prices" ,,"West Texas Intermediate (WTI) Crude Oil Price" ,,"U.S. Gasoline and Crude Oil Prices" ,,"U.S. Diesel Fuel and Crude Oil Prices" ,,"Henry Hub Natural Gas Price" ,,"U.S. Natural Gas Prices" ,"World Liquid Fuels" ,,"World Liquid Fuels Production and Consumption Balance" ,,"Estimated Unplanned Crude Oil Production Outages Among OPEC Producers" ,,"Estimated Unplanned Crude Oil Production Disruptions Among non-OPEC Producers" ,,"World Liquid Fuels Consumption" ,,"World Liquid Fuels Consumption Growth"

47

Washington DC Reliability Requirements and the Need to Operate Mirant's  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Washington DC Reliability Requirements and the Need to Operate Washington DC Reliability Requirements and the Need to Operate Mirant's Potomac River Generation Station to Support Local Area Reliability (Oak Ridge National Laboratory 2005) Washington DC Reliability Requirements and the Need to Operate Mirant's Potomac River Generation Station to Support Local Area Reliability (Oak Ridge National Laboratory 2005) Pursuant to Docket No. EO-05-01: Oak Ridge National Laboratory provided an analysis of the Mirant Potomac River Generation Station in 2005 and discussed the reliability requirements of the local area and the potential impacts on reliability of changing operation of the Potomac River Generating Station in this paper. Washington DC Reliability Requirements and the Need to Operate Mirant's Potomac River Generation Station to Support Local Area Reliability.pdf

48

Short-term energy outlook, July 1998  

Science Conference Proceedings (OSTI)

The Energy Information Administration (EIA) prepares The Short-Term Energy Outlook (energy supply, demand, and price projections) monthly for distribution on the internet at: www.eia.doe.gov/emeu/steo/pub/contents.html. In addition, printed versions of the report are available to subscribers in January, April, July and October. The forecast period for this issue of the Outlook extends from July 1998 through December 1999. Values for second quarter of 1998 data, however, are preliminary EIA estimates (for example, some monthly values for petroleum supply and disposition are derived in part from weekly data reported in EIA`s Weekly Petroleum Status Report) or are calculated from model simulations that use the latest exogenous information available (for example, electricity sales and generation are simulated by using actual weather data). The historical energy data, compiled in the July 1998 version of the Short-Term Integrated Forecasting System (STIFS) database, are mostly EIA data regularly published in the Monthly Energy Review, Petroleum Supply Monthly, and other EIA publications. Minor discrepancies between the data in these publications and the historical data in this Outlook are due to independent rounding. 28 figs., 19 tabs.

NONE

1998-07-01T23:59:59.000Z

49

Short-term energy outlook, January 1999  

SciTech Connect

The Energy Information Administration (EIA) prepares the Short-Term Energy Outlook (energy supply, demand, and price projections) monthly. The forecast period for this issue of the Outlook extends from January 1999 through December 2000. Data values for the fourth quarter 1998, however, are preliminary EIA estimates (for example, some monthly values for petroleum supply and disposition are derived in part from weekly data reported in EIA`s Weekly Petroleum Status Report) or are calculated from model simulations that use the latest exogenous information available (for example, electricity sales and generation are simulated by using actual weather data). The historical energy data, compiled in the January 1999 version of the Short-Term Integrated Forecasting System (STIFS) database, are mostly EIA data regularly published in the Monthly Energy Review, Petroleum Supply Monthly, and other EIA publications. Minor discrepancies between the data in these publications and the historical data in this Outlook are due to independent rounding. The STIFS model is driven principally by three sets of assumptions or inputs: estimates of key macroeconomic variables, world oil price assumptions, and assumptions about the severity of weather. Macroeconomic estimates are produced by DRI/McGraw-Hill but are adjusted by EIA to reflect EIA assumptions about the world price of crude oil, energy product prices, and other assumptions which may affect the macroeconomic outlook. By varying the assumptions, alternative cases are produced by using the STIFS model. 28 figs., 19 tabs.

NONE

1999-01-01T23:59:59.000Z

50

Short-Term Energy Outlook- May 2003  

Gasoline and Diesel Fuel Update (EIA)

3 3 1 Short-Term Energy Outlook May 2003 Overview World Oil Markets. The April 24 meeting of the Organization of Petroleum Exporting Countries (OPEC) raised official quotas for members (excluding Iraq) by 0.9 million barrels per day from the previous (suspended) quota to 25.4 million barrels per day. OPEC members also sought tighter compliance with quotas, calling for production cuts of 2 million barrels per day from April levels. We expect these measures to result in an average total OPEC (including Iraq) crude oil production rate of about 26.7 million barrels per day in the second and third quarters. This production level is not significantly different from our base case assumptions in last month's report. Individual OPEC country shares of these output levels will depend upon the speed with which

51

Short Term Energy Outlook ,October 2002  

Gasoline and Diesel Fuel Update (EIA)

October 2002 October 2002 1 Short-Term Energy Outlook October 2002 Overview World Oil Markets: Continued high oil prices are the result of declining OECD commercial oil inventories, worries over a potential clash with Iraq, and OPEC's decision to leave production quotas unchanged at its September meeting. Solid growth in world oil demand this winter (and for 2003 as a whole) is likely to tighten world oil markets and reduce commercial oil inventories. The West Texas Intermediate (WTI) crude oil spot price averaged $29.75 in September, about $3.50 per barrel above the year-ago level and about $10 per barrel above a low point seen last January. Home Heating Costs Outlook: While fuel supplies should remain sufficient under normal weather

52

August 2012 Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

August 2012 1 August 2012 1 August 2012 Short-Term Energy Outlook Highlights  EIA projects that the Brent crude oil spot price will average about $103 per barrel during the second half of 2012, about $3.50 per barrel higher than in last month's Outlook. The forecast Brent crude oil spot price falls to an average of $100 per barrel in 2013. The projected West Texas Intermediate (WTI) crude oil spot price discount to Brent crude oil narrows from about $14 in the third quarter of 2012 to $9 by late 2013. These price forecasts assume that world oil-consumption-weighted real gross domestic product (GDP), which increased by 3.0 percent in 2011, grows by 2.8 percent in 2012 and 2.9

53

Short-Term Energy Outlook June 2013  

Gasoline and Diesel Fuel Update (EIA)

1 1 June 2013 Short-Term Energy Outlook (STEO) Highlights * After increasing to $119 per barrel in early February 2013, the Brent crude oil spot price fell to a low of $97 per barrel in mid-April and then recovered to an average of $103 per barrel in May. EIA expects that the Brent crude oil spot price will average $102 per barrel over the second half of 2013, and $100 per barrel in 2014. * EIA expects the price of regular gasoline will average $3.53 per gallon over the summer driving season (April through September). The annual average regular gasoline retail price is projected to decline from $3.63 per gallon in 2012 to $3.49 per gallon in 2013 and to $3.37 per gallon in 2014. Energy price forecasts are highly uncertain, and the current values of

54

Short Term Energy Outlook, February 2003  

Gasoline and Diesel Fuel Update (EIA)

3 3 1 Short-Term Energy Outlook February 2003 Overview World Oil Markets. World oil markets will likely remain tight through most of 2003, as petroleum inventories and global spare production capacity continue to dwindle amid blasts of cold weather and constrained output from Venezuela. OPEC efforts to increase output to make up for lower Venezuela output has reduced global spare production capacity to only 2 million barrels per day, leaving little room to make up for unexpected supply or demand surprises. Meanwhile, the average West Texas Intermediate (WTI) crude oil price increased by $3.50 to $33 per barrel from December to January (Figure 1). For the year 2003, WTI oil prices are expected to remain over $30 per barrel, even though Venezuelan output appears to be moving toward normal sooner than expected. Also,

55

Berkeley Lab: Nearby Short-Term Accommodations  

NLE Websites -- All DOE Office Websites (Extended Search)

Accommodations Accommodations Visitor Information Maps and Directions to the Lab Offsite Shuttle Bus Service Bay Area Mass Transit Information Site Access Parking Permits and Gate Passes UC Berkeley Campus Map Nearby Short-Term Accommodations Guest House Berkeley Lab Guest House - The Berkeley Lab guest house is conveniently located on the Lawrence Berkeley National Laboratory campus and features 57 tastefully appointed guest rooms, many with spectacular views of the San Francisco bay, skyline, and City of Berkeley. The guest house is only a few minutes away from the University of California Berkeley Campus and the dynamic Berkeley community itself. It is available to visiting researchers and those conducting business with the University. The Faculty Club * U.C. Campus

56

Short Term Energy Outlook ,November 2002  

Gasoline and Diesel Fuel Update (EIA)

November 2002 November 2002 1 Short-Term Energy Outlook November 2002 Overview World Oil Markets: During the past 3-4 months, OPEC 10 production has risen more quickly than projected, thus reducing upward pressure on prices. More specifically, while the West Texas Intermediate (WTI) crude oil spot price averaged $28.84 in October, about $6.70 per barrel above the year-ago level (Figure 1), the WTI average price for fourth quarter 2002 is now projected to soften to $28.20, which is about $2 per barrel below our fourth-quarter projection from last month. Meanwhile, OECD inventory levels, which are now approaching 5 -year lows, should begin to rise over the next few months as additional supplies reach markets, and return to the middle of their observed range by spring.

57

Short-Term Energy Outlook July 2013  

Gasoline and Diesel Fuel Update (EIA)

1 1 July 2013 Short-Term Energy Outlook (STEO) Highlights  The U.S. Energy Information Administration (EIA) expects that the Brent crude oil spot price will average $102 per barrel over the second half of 2013, and $100 per barrel in 2014. This forecast assumes there are no disruptions to energy markets arising from the recent unrest in Egypt. After increasing to $119 per barrel in early February 2013, the Brent crude oil spot price fell to a low of $97 per barrel in mid-April and then recovered to an average of $103 per barrel in May and June, about the same as its average over the same two-month period last year.  The discount of West Texas Intermediate (WTI) crude oil to Brent crude oil, which averaged $18 per barrel in 2012 and increased to a monthly average of more than $20 per barrel in

58

Short Term Energy Outlook, March 2003  

Gasoline and Diesel Fuel Update (EIA)

3 3 1 Short-Term Energy Outlook March 2003 Overview World Oil Markets. February crude oil prices moved higher than expected pushed by fears of a war in Iraq, low inventories, slow recovery in Venezuelan exports, continued cold weather and sharply higher natural gas prices in the United States. West Texas Intermediate prices averaged close to $36 for the month (Figure 1), a level not seen since October 1990. Oil inventories continued lower through the month resulting in a cumulative reduction in total commercial stocks of 101 million barrels since September 30, 2002, the beginning of the heating season. Total OECD inventories reached an estimated 2,424 million barrels at the end of February, which would be the lowest level since

59

Short Term Energy Outlook, December 2002  

Gasoline and Diesel Fuel Update (EIA)

December 2002 December 2002 1 Short-Term Energy Outlook December 2002 Overview World Oil Markets: Average crude oil prices fell by about $2.50 per barrel between October and November in response to continued high production levels from OPEC 10 countries (Figure 1). However, by the end of November oil prices had risen to end-October levels as concerns over the situations in Iraq and Venezuela pushed prices up. Oil inventories, which are currently in the lower portion of the previous 5-year range, are poised to rise to more comfortable levels soon if OPEC output continues at or above current levels. OPEC is considering cutbacks from current levels. Heating Fuels Update. As in October, weather was m uch colder than normal in November, boosting

60

To forecast short-term load in electric power system based on FNN  

Science Conference Proceedings (OSTI)

Electric power system load forecasting plays an important part in the Energy Management System (EMS), which has a great effect on the operating, controlling and planning of power system. Accurate load forecasting, especially short-term load forecasting, ...

Yueli Hu; Huijie Ji; Xiaolong Song

2009-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Natural Gas Summary from the Short-Term Energy Outlook  

Annual Energy Outlook 2012 (EIA)

Short-Term Energy Outlook Natural Gas Summary from the Short-Term Energy Outlook: EIA projects that natural gas prices will remain relatively high through the rest of 2003, with...

62

Short-Term Energy Carbon Dioxide Emissions Forecasts August 2009  

Reports and Publications (EIA)

Supplement to the Short-Term Energy Outlook. Short-term projections for U.S. carbon dioxide emissions of the three fossil fuels: coal, natural gas, and petroleum.

Information Center

2009-08-11T23:59:59.000Z

63

Definition: Interconnection Reliability Operating Limit Tv | Open Energy  

Open Energy Info (EERE)

Limit Tv Limit Tv Jump to: navigation, search Dictionary.png Interconnection Reliability Operating Limit Tv The maximum time that an Interconnection Reliability Operating Limit can be violated before the risk to the interconnection or other Reliability Coordinator Area(s) becomes greater than acceptable. Each Interconnection Reliability Operating Limit's Tv shall be less than or equal to 30 minutes.[1] Related Terms Interconnection Reliability Operating Limitinterconnection, interconnection References ↑ Glossary of Terms Used in Reliability Standards An i LikeLike UnlikeLike You like this.Sign Up to see what your friends like. nline Glossary Definition Retrieved from "http://en.openei.org/w/index.php?title=Definition:Interconnection_Reliability_Operating_Limit_Tv&oldid=493031

64

Short-term energy outlook quarterly projections. First quarter 1994  

SciTech Connect

The Energy Information Administration (EIA) prepares quarterly, short- term energy supply, demand, and price projections for publication in February, May, August, and November in the Short-Term Energy Outlook (Outlook). An annual supplement analyzes the performance of previous forecasts, compares recent cases with those of other forecasting services, and discusses current topics related to the short-term energy markets.

Not Available

1994-02-07T23:59:59.000Z

65

Operating standby redundant controller to improve voltage source inverter reliability .  

E-Print Network (OSTI)

??This thesis presents a control architecture that achieves operating standby redundancy for a voltage source inverter controller. The system was designed to increase reliability by… (more)

Blevins, Stephen T.

2007-01-01T23:59:59.000Z

66

Short-term energy outlook, April 1999  

Science Conference Proceedings (OSTI)

The forecast period for this issue of the Outlook extends from April 1999 through December 2000. Data values for the first quarter 1999, however, are preliminary EIA estimates (for example, some monthly values for petroleum supply and disposition are derived in part from weekly data reported in EIA`s Weekly Petroleum Status Report) or are calculated from model simulations that use the latest exogenous information available (for example, electricity sales and generation are simulated by using actual weather data). The historical energy data, compiled in the April 1999 version of the Short-Term Integrated forecasting system (STIFS) database, are mostly EIA data regularly published in the Monthly Energy Review, Petroleum Supply Monthly, and other EIA publications. Minor discrepancies between the data in these publications and the historical data in this Outlook are due to independent rounding. The STIFS model is driven principally by three sets of assumptions or inputs: estimates of key macroeconomic variables, world oil price assumptions, and assumptions about the severity of weather. Macroeconomic estimates are produced by DRI/McGraw-Hill but are adjusted by EIA to reflect EIA assumptions about the world price of crude oil, energy product prices, and other assumptions which may affect the macroeconomic outlook. By varying the assumptions, alternative cases are produced by using the STIFS model. 25 figs., 19 tabs.

NONE

1999-04-01T23:59:59.000Z

67

Wind turbine reliability : understanding and minimizing wind turbine operation and maintenance costs.  

SciTech Connect

Wind turbine system reliability is a critical factor in the success of a wind energy project. Poor reliability directly affects both the project's revenue stream through increased operation and maintenance (O&M) costs and reduced availability to generate power due to turbine downtime. Indirectly, the acceptance of wind-generated power by the financial and developer communities as a viable enterprise is influenced by the risk associated with the capital equipment reliability; increased risk, or at least the perception of increased risk, is generally accompanied by increased financing fees or interest rates. Cost of energy (COE) is a key project evaluation metric, both in commercial applications and in the U.S. federal wind energy program. To reflect this commercial reality, the wind energy research community has adopted COE as a decision-making and technology evaluation metric. The COE metric accounts for the effects of reliability through levelized replacement cost and unscheduled maintenance cost parameters. However, unlike the other cost contributors, such as initial capital investment and scheduled maintenance and operating expenses, costs associated with component failures are necessarily speculative. They are based on assumptions about the reliability of components that in many cases have not been operated for a complete life cycle. Due to the logistical and practical difficulty of replacing major components in a wind turbine, unanticipated failures (especially serial failures) can have a large impact on the economics of a project. The uncertainty associated with long-term component reliability has direct bearing on the confidence level associated with COE projections. In addition, wind turbine technology is evolving. New materials and designs are being incorporated in contemporary wind turbines with the ultimate goal of reducing weight, controlling loads, and improving energy capture. While the goal of these innovations is reduction in the COE, there is a potential impact on reliability whenever new technologies are introduced. While some of these innovations may ultimately improve reliability, in the short term, the technology risks and the perception of risk will increase. The COE metric used by researchers to evaluate technologies does not address this issue. This paper outlines the issues relevant to wind turbine reliability for wind turbine power generation projects. The first sections describe the current state of the industry, identify the cost elements associated with wind farm O&M and availability and discuss the causes of uncertainty in estimating wind turbine component reliability. The latter sections discuss the means for reducing O&M costs and propose O&M related research and development efforts that could be pursued by the wind energy research community to reduce COE.

2004-11-01T23:59:59.000Z

68

Wind turbine reliability : understanding and minimizing wind turbine operation and maintenance costs.  

DOE Green Energy (OSTI)

Wind turbine system reliability is a critical factor in the success of a wind energy project. Poor reliability directly affects both the project's revenue stream through increased operation and maintenance (O&M) costs and reduced availability to generate power due to turbine downtime. Indirectly, the acceptance of wind-generated power by the financial and developer communities as a viable enterprise is influenced by the risk associated with the capital equipment reliability; increased risk, or at least the perception of increased risk, is generally accompanied by increased financing fees or interest rates. Cost of energy (COE) is a key project evaluation metric, both in commercial applications and in the U.S. federal wind energy program. To reflect this commercial reality, the wind energy research community has adopted COE as a decision-making and technology evaluation metric. The COE metric accounts for the effects of reliability through levelized replacement cost and unscheduled maintenance cost parameters. However, unlike the other cost contributors, such as initial capital investment and scheduled maintenance and operating expenses, costs associated with component failures are necessarily speculative. They are based on assumptions about the reliability of components that in many cases have not been operated for a complete life cycle. Due to the logistical and practical difficulty of replacing major components in a wind turbine, unanticipated failures (especially serial failures) can have a large impact on the economics of a project. The uncertainty associated with long-term component reliability has direct bearing on the confidence level associated with COE projections. In addition, wind turbine technology is evolving. New materials and designs are being incorporated in contemporary wind turbines with the ultimate goal of reducing weight, controlling loads, and improving energy capture. While the goal of these innovations is reduction in the COE, there is a potential impact on reliability whenever new technologies are introduced. While some of these innovations may ultimately improve reliability, in the short term, the technology risks and the perception of risk will increase. The COE metric used by researchers to evaluate technologies does not address this issue. This paper outlines the issues relevant to wind turbine reliability for wind turbine power generation projects. The first sections describe the current state of the industry, identify the cost elements associated with wind farm O&M and availability and discuss the causes of uncertainty in estimating wind turbine component reliability. The latter sections discuss the means for reducing O&M costs and propose O&M related research and development efforts that could be pursued by the wind energy research community to reduce COE.

Not Available

2004-11-01T23:59:59.000Z

69

Short-term energy outlook. Quarterly projections, Third quarter 1994  

SciTech Connect

The Energy Information Administration (EIA) prepares quarterly, short-term energy supply, demand, and price projections for publication in February, May, August, and November in the Short-Term Energy Outlook (Outlook). An annual supplement analyzes the performance of previous forecasts, compares recent cases with those of other forecasting services, and discusses current topics related to the short-term energy markets. (See Short-Term Energy Outlook Annual Supplement, DOE/EIA-0202). The feature article for this issue is Demand, Supply and Price Outlook for Reformulated Gasoline, 1995.

1994-08-02T23:59:59.000Z

70

ShortShort--Term Energy Outlook Term Energy Outlook  

U.S. Energy Information Administration (EIA)

U.S. Energy Information Administration Independent Statistics & Analysis ShortShort--Term Energy Outlook Term Energy Outlook Chart Gallery for Chart Gallery for ...

71

Summary Short-Term Petroleum and Natural Gas Outlook  

U.S. Energy Information Administration (EIA)

Table of Contents. Summary Short-Term Petroleum. and Natural Gas Outlook. WTI Crude Oil Price: Base Case and 95% Confidence Interval. Real and Nominal Crude Oil Prices

72

Short-Term Energy Outlook Supplement: Energy-weighted industrial...  

U.S. Energy Information Administration (EIA) Indexed Site

Short-Term Energy Outlook Supplement: Energy-weighted industrial production indices December 2013 Independent Statistics & Analysis www.eia.gov U.S. Department of Energy...

73

EIA Short-Term and Winter Fuels Outlook  

U.S. Energy Information Administration (EIA)

Washington, DC, October 12, 2011 Source: EIA Short-Term Energy Outlook, October 2011 History : Heating Oil Howard Gruenspecht, Winter Fuels Outlook 14

74

Short-Term Energy Outlook - Energy Information Administration  

U.S. Energy Information Administration (EIA)

U.S. Energy Information Administration | Short-Term Energy and Winter Fuels Outlook October 2013 2 Projected Winter Fuel Expenditures by Fuel and Region

75

Short-Term Energy Outlook Quarterly/Biennial Updates  

Reports and Publications (EIA)

Short-term forecasts of energy supply, demand, and price projections through 2001 for U.S. and International oil forecasts

Joe Ayoub

76

Short-Term Energy Outlook Quarterly/Biennial Updates  

Reports and Publications (EIA)

Short-term forecasts of energy supply, demand, and price projections through 2001 for U.S. and International oil forecasts

2013-08-29T23:59:59.000Z

77

Short-Term Energy Outlook and Winter Fuels Outlook  

U.S. Energy Information Administration (EIA) Indexed Site

Short-Term Energy Outlook and Winter Fuels Outlook For NASEO Winter Fuels Outlook Conference November 1, 2013| Washington, DC By Adam Sieminski, Administrator EIA works closely...

78

EIA Short-Term and Winter Fuels Outlook  

U.S. Energy Information Administration (EIA)

EIA Short-Term and Winter Fuels Outlook ... March 31) for fossil fuels but not electricity . Percent change in fuel bills from last winter (forecast) Fuel .

79

Short-Term Energy Outlook - U.S. Energy Information ...  

U.S. Energy Information Administration (EIA)

Short-Term Energy Outlook › ... Search EIA .gov. A-Z Index; A-Z ... Arizona's 250-megawatt Solana generation station became the first major solar ...

80

Short-Term Energy Outlook September 2002 Overview  

U.S. Energy Information Administration (EIA)

Forecasting System database, and Office of Coal, Nuclear, Electric and Alternate Fuels. Energy Information Administration/Short-Term Energy Outlook -- September 2002 10

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Short Term Energy Outlook and Summer Fuels Outlook  

U.S. Energy Information Administration (EIA)

Projections: EIA, Short-Term Integrated Forecasting System database, and Office of Coal, Nuclear, Electric and Alternate Fuels (hydroelectric and nuclear).

82

Short-Term Energy Outlook - Energy Information Administration  

U.S. Energy Information Administration (EIA)

the Short-Term Integrated Forecasting System (STIFS) database, are mostly EIA data regularly published in the Monthly Energy Review, Petroleum Supply Monthly, and

83

Short Term Energy Outlook July - Energy Information Administration  

U.S. Energy Information Administration (EIA)

Short-Term Integrated Forecasting System and by EIA’s office of Coal, Nuclear, Electric and Alternate Fuels (hydroelectric and nuclear).

84

Short Term Energy Outlook Supplement - U.S. Energy Information ...  

U.S. Energy Information Administration (EIA)

Energy Information Administration/Short-Term Energy Outlook Supplement – June 2007 4 Figure 2. Major Hurricanes in the Gulf of Mexico, 1995?2006

85

Energy Information Administration/Short-Term Energy Outlook - May 2005  

Gasoline and Diesel Fuel Update (EIA)

5 5 1 Short-Term Energy Outlook May 2005 2005 Summer Motor Gasoline Outlook Update (Figure 1) A considerable break in the expected strength of near-term crude oil prices has resulted in a lower forecast for retail gasoline prices this spring. Gasoline prices may well have seen their peak for the year, barring sharp disruptions in crude oil supply or refinery operations. Pump prices for the summer (April-September) are now projected to average $2.17 per gallon, still high by historical standards but well below the $2.28 anticipated last month. Our projection has been revised downward from the last Outlook as crude oil prices fell from the high $50s per barrel to the low $50s. However, oil prices remain high enough to keep expected

86

DOE/EIA-0202(87/2Q) Energy Information Administration Short-Term  

Gasoline and Diesel Fuel Update (EIA)

2Q) 2Q) Energy Information Administration Short-Term Energy Outlook Quarterly Projections April 1987 . m erm Term t-Term rt-Term jrt-Term ort-Term iort-Term ion-Term ion-Term lort-Term lort-Term ort-Term ort-Term Tt-Term ".-Term -Term Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy ^nergy Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term

87

Short-term energy outlook annual supplement, 1993  

SciTech Connect

The Short-Term Energy Outlook Annual Supplement (supplement) is published once a year as a complement to the Short-Term Energy Outlook (Outlook), Quarterly Projections. The purpose of the Supplement is to review the accuracy of the forecasts published in the Outlook, make comparisons with other independent energy forecasts, and examine current energy topics that affect the forecasts.

NONE

1993-08-06T23:59:59.000Z

88

Short-term energy outlook, annual supplement 1994  

SciTech Connect

The Short-Term Energy Outlook Annual Supplement (Supplement) is published once a year as a complement to the Short-Term Energy Outlook (Outlook), Quarterly Projections. The purpose of the Supplement is to review the accuracy of the forecasts published in the Outlook, make comparisons with other independent energy forecasts, and examine current energy topics that affect the forecasts.

Not Available

1994-08-01T23:59:59.000Z

89

DOE/EIA-0202(84/1Q) Short-Term Energy Outlook Quarterly Projections  

Gasoline and Diesel Fuel Update (EIA)

1Q) 1Q) Short-Term Energy Outlook Quarterly Projections February 1984 Published: March 1984 Energy Information Administration Washington, D.C. t rt jrt- .ort- iort- iort- .iort- iort- lort- Short-Term' Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term

90

DOE/EIA-0202(88/1Q) Energy Information Administration Short-Term  

Gasoline and Diesel Fuel Update (EIA)

8/1Q) 8/1Q) Energy Information Administration Short-Term Energy Outlook Quarterly Projections January 1988 .m erm Term t-Term rt-Term jrt-Term ort-Term ion-Term ion-Term tort-Term jort-Term ion-Term ort-Term ore-Term rt-Term 't-Term -Term Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy "^nergy Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook ~">Mook Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term

91

Energy Information Administration/Short-Term Energy Outlook - August 2005  

Gasoline and Diesel Fuel Update (EIA)

5 5 1 Short-Term Energy Outlook August 2005 Short-Term Energy Outlook - Regional Enhancements Starting with this edition of the Short-Term Energy Outlook (STEO), EIA is introducing regional projections (the scope of which will vary by fuel) of energy prices, consumption, and production. The addition of regional data and forecasts will allow us to examine regional fuel demands and prices, regional fuel inventory trends, the interaction between regional electricity demand shifts, and regional electric generating capacity. This edition of STEO includes regional projections for heating oil, propane, and gasoline prices and natural gas and electricity demand and prices. Over the next 2 months, we will include additional regional

92

Short-term energy outlook. Quarterly projections, Third quarter 1995  

SciTech Connect

The Energy Information Administration (EIA) prepares quarterly, short-term energy supply, demand, and price projections for publication in February, May, August, and November in the Short-Term Energy Outlook (Outlook). An annual supplement analyzes the performance of previous forecasts, compares recent projections with those of other forecasting services, and discusses current topics related to the short-term energy markets. The forecast period for this issue of the Outlook extends from the third quarter of 1995 through the fourth quarter of 1996. Values for the second quarter of 1995, however, are preliminary EIA estimates.

NONE

1995-08-02T23:59:59.000Z

93

Short-term CO? abatement in the European power sector  

E-Print Network (OSTI)

This paper focuses on the possibilities for short term abatement in response to a CO2 price through fuel switching in the European power sector. The model E-Simulate is used to simulate the electricity generation in Europe ...

Delarue, Erik D.

2008-01-01T23:59:59.000Z

94

Short-Term Climate Extremes: Prediction Skill and Predictability  

Science Conference Proceedings (OSTI)

Forecasts for extremes in short-term climate (monthly means) are examined to understand the current prediction capability and potential predictability. This study focuses on 2-m surface temperature and precipitation extremes over North and South ...

Emily J. Becker; Huug van den Dool; Malaquias Peña

2013-01-01T23:59:59.000Z

95

Short-Term Energy Outlook - Energy Information Administration  

U.S. Energy Information Administration (EIA)

U.S. Energy Information Administration | Short-Term Energy Outlook August 2013 2 Global Crude Oil and Liquid Fuels . The recent increase in crude oil and liquid fuels ...

96

Regional Short-Term Energy Model (RSTEM) Overview  

Reports and Publications (EIA)

The Regional Short-Term Energy Model (RSTEM) utilizes estimated econometric relationships for demand, inventories and prices to forecast energy market outcomes across key sectors and selected regions throughout the United States.

Information Center

2009-04-16T23:59:59.000Z

97

Short-Term Energy and Winter Fuels Outlook October 2013  

U.S. Energy Information Administration (EIA) Indexed Site

and Winter Fuels Outlook October 2013 1 October 2013 Short-Term Energy and Winter Fuels Outlook (STEO) Highlights EIA projects average U.S. household expenditures for natural...

98

Model documentation of the Short-Term Coal Analysis System  

Science Conference Proceedings (OSTI)

The short-term coal analysis system (SCOAL) is used by the Data Analysis and Forecasting Branch (DAFB) as an analytic aid to support preparation of short-term projections of bituminous coal and lignite production at the state level, and anthracite production, domestic imports of coal, and domestic and export demand for US coal at the national level. A description of SCOAL is presented which includes a general overview of the model and its analytical capabilities. (DMC)

Not Available

1983-04-01T23:59:59.000Z

99

Short-term energy outlook: Annual supplement, 1987  

SciTech Connect

The Energy Information Administration (EIA) publishes forecasts of short-term energy supply, demand, and prices in the Short-Term Energy Outlook (Outlook). This volume, Short-Term Energy Outlook, Annual Supplement, (Supplement) discusses major changes in the forecasting methodology, analyzes previous forecast errors, and examines current issues that affect EIA's short-term energy forecasts. The principal users of the Supplement are managers and energy analysts in private industry and government. Chapter 2 evaluates the accuracy of previous short-term energy forecasts and the major assumptions underlying these forecasts published in the last 13 issues of the Outlook. Chapter 3 compares the EIA's present energy projections with past projections and with recent projections made by other forecasting groups. Chapter 4 analyzes the 1986 increase in residual fuel oil demand after 8 consecutive years of decline. Sectoral analysis shows where and why this increase occurred. Chapter 5 discusses the methodology, estimation, and forecasts of fossil fuel shares used in the generation of electricity. Chapter 6 presents an update of the methodology used to forecast natural gas demand, with an emphasis on sectoral disaggregation. Chapter 7 compares the current use of generation data as a representation of short-term electricity demand with proposed total and sectoral sales equations. 8 refs., 7 figs., 63 tabs.

1987-12-11T23:59:59.000Z

100

Real-Time Short-Term Forecasting of Precipitation at an Australian Tropical Station  

Science Conference Proceedings (OSTI)

The results of a major real-time trial of techniques for the short-term (12 h ahead) prediction of precipitation for the Australian tropical city of Darwin are described. The trial compared current operational manual forecasting procedures with a ...

K. Fraedrich; L. M. Leslie

1988-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

DOE/EIA-0202(84/2QH Short-Term Energy Outlook Quarterly Projections  

Gasoline and Diesel Fuel Update (EIA)

2QH 2QH Short-Term Energy Outlook Quarterly Projections May 1984 Published: June 1984 Energy Information Administration Washington, D.C. t rt jrt .ort lort .iort .iort- iort- iort- '.ort- ort- .m .erm Term Term Term Term Term Term Term Term Term Term Term Term i-Term rTerm -Term xrm uergy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy ^nergy Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Short-Tern Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term

102

DOE/EIA-0202(85/2Q) Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

2Q) 2Q) Short-Term Energy Outlook amm Quarterly Projections April 1985 Published: May 1985 Energy Information Administration Washington, D C t rt jrt .ort lort .iort iort iort lort '.ort ort .erm -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term xrm nergy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term

103

Evaluation of Condition Assessment for Continued Reliable Operation  

Science Conference Proceedings (OSTI)

Fossil power plant operators face increasing complexity relative to long-range planning for existing fossil generation assets. With the increased focus to provide reliable and cost-effective power coupled with new and increasingly stringent existing environmental regulations, many power companies face difficult decisions regarding investment in aging assets, as opposed to building new generation units or providing ...

2013-04-26T23:59:59.000Z

104

Natural Gas Summary from the Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

Summary from the Short-Term Energy Outlook Summary from the Short-Term Energy Outlook EIA Home > Natural Gas > Natural Gas Weekly Update Natural Gas Summary from the Short-Term Energy Outlook This summary is based on the most recent Short-Term Energy Outlook released May 6, 2002. EIA projects that natural gas wellhead prices will average $2.73 per MMBtu in 2002 compared with about $4.00 per MMBtu last year (Short-Term Energy Outlook, May 2002). This projection reflects the sharp increases in spot and near-term futures prices in recent weeks. Average wellhead prices have risen 38 percent from $2.14 per MMBtu in February to an estimated $2.96 in April. Spot prices at the Henry Hub have increased to an even greater extent, rising more than $1.50 per MMBtu since early February. The upward price trend reflects a number of influences, such as unusual weather patterns that have led to increased gas consumption, and tensions in the Middle East and rising crude oil prices. Other factors contributing to the recent price surge include the strengthening economy, the increased capacity and planned new capacity of gas-burning power plants, and concerns about the decline in gas-directed drilling.

105

Short-term energy outlook: Quarterly projections. Second quarter 1995  

SciTech Connect

The Energy Information Administration (EIA) prepares quarterly, short-term energy supply, demand, and price projections for publication in February, May, August, and November in the Short-Term Energy Outlook (Outlook). An annual supplement analyzes the performance of previous forecasts, compares recent projections with those of other forecasting services, and discusses current topics related to the short-term energy markets. (See Short-Term Energy Outlook Annual Supplement, DOE/EIA-0202.) The forecast period for this issue of the Outlook extends from the second quarter of 1995 through the fourth quarter of 1996. Values for the first quarter of 1995, however, are preliminary EIA estimates (for example, some monthly values for petroleum supply and disposition are derived in part from weekly data reported in the Weekly Petroleum Status Report) or are calculated from model simulations using the latest exogenous information available (for example, electricity sales and generation are simulated using actual weather data). The historical energy data, compiled into the second quarter 1995 version of the Short-Term Integrated Forecasting System (STIFS) database, are mostly EIA data regularly published in the Monthly Energy Review, Petroleum Supply Monthly, and other EIA publications. Minor discrepancies between the data in these publications and the historical data in this Outlook are due to independent rounding. The STIFS database is archived quarterly and is available from the National Technical Information Service.

NONE

1995-05-02T23:59:59.000Z

106

Application of Ensemble Sensitivity Analysis to Observation Targeting for Short-term Wind Speed Forecasting  

Science Conference Proceedings (OSTI)

The operators of electrical grids, sometimes referred to as Balancing Authorities (BA), typically make critical decisions on how to most reliably and economically balance electrical load and generation in time frames ranging from a few minutes to six hours ahead. At higher levels of wind power generation, there is an increasing need to improve the accuracy of 0- to 6-hour ahead wind power forecasts. Forecasts on this time scale have typically been strongly dependent on short-term trends indicated by the time series of power production and meteorological data from a wind farm. Additional input information is often available from the output of Numerical Weather Prediction (NWP) models and occasionally from off-site meteorological towers in the region surrounding the wind generation facility. A widely proposed approach to improve short-term forecasts is the deployment of off-site meteorological towers at locations upstream from the wind generation facility in order to sense approaching wind perturbations. While conceptually appealing, it turns out that, in practice, it is often very difficult to derive significant benefit in forecast performance from this approach. The difficulty is rooted in the fact that the type, scale, and amplitude of the processes controlling wind variability at a site change from day to day if not from hour to hour. Thus, a location that provides some useful forecast information for one time may not be a useful predictor a few hours later. Indeed, some processes that cause significant changes in wind power production operate predominantly in the vertical direction and thus cannot be monitored by employing a network of sensors at off-site locations. Hence, it is very challenging to determine the type of sensors and deployment locations to get the most benefit for a specific short-term forecast application. Two tools recently developed in the meteorological research community have the potential to help determine the locations and parameters to measure in order to get the maximum positive impact on forecast performance for a particular site and short-term look-ahead period. Both tools rely on the use of NWP models to assess the sensitivity of a forecast for a particular location to measurements made at a prior time (i.e. the look-ahead period) at points surrounding the target location. The fundamental hypothesis is that points and variables with high sensitivity are good candidates for measurements since information at those points are likely to have the most impact on the forecast for the desired parameter, location and look-ahead period. One approach is called the adjoint method (Errico and Vukicevic, 1992; Errico, 1997) and the other newer approach is known as Ensemble Sensitivity Analysis (ESA; Ancell and Hakim 2007; Torn and Hakim 2008). Both approaches have been tested on large-scale atmospheric prediction problems (e.g. forecasting pressure or precipitation over a relatively large region 24 hours ahead) but neither has been applied to mesoscale space-time scales of winds or any other variables near the surface of the earth. A number of factors suggest that ESA is better suited for short-term wind forecasting applications. One of the most significant advantages of this approach is that it is not necessary to linearize the mathematical representation of the processes in the underlying atmospheric model as required by the adjoint approach. Such a linearization may be especially problematic for the application of short-term forecasting of boundary layer winds in complex terrain since non-linear shifts in the structure of boundary layer due to atmospheric stability changes are a critical part of the wind power production forecast problem. The specific objective of work described in this paper is to test the ESA as a tool to identify measurement locations and variables that have the greatest positive impact on the accuracy of wind forecasts in the 0- to 6-hour look-ahead periods for the wind generation area of California's Tehachapi Pass during the warm (high generation) season. The paper is organized

Zack, J; Natenberg, E; Young, S; Manobianco, J; Kamath, C

2010-02-21T23:59:59.000Z

107

Application of Ensemble Sensitivity Analysis to Observation Targeting for Short-term Wind Speed Forecasting  

DOE Green Energy (OSTI)

The operators of electrical grids, sometimes referred to as Balancing Authorities (BA), typically make critical decisions on how to most reliably and economically balance electrical load and generation in time frames ranging from a few minutes to six hours ahead. At higher levels of wind power generation, there is an increasing need to improve the accuracy of 0- to 6-hour ahead wind power forecasts. Forecasts on this time scale have typically been strongly dependent on short-term trends indicated by the time series of power production and meteorological data from a wind farm. Additional input information is often available from the output of Numerical Weather Prediction (NWP) models and occasionally from off-site meteorological towers in the region surrounding the wind generation facility. A widely proposed approach to improve short-term forecasts is the deployment of off-site meteorological towers at locations upstream from the wind generation facility in order to sense approaching wind perturbations. While conceptually appealing, it turns out that, in practice, it is often very difficult to derive significant benefit in forecast performance from this approach. The difficulty is rooted in the fact that the type, scale, and amplitude of the processes controlling wind variability at a site change from day to day if not from hour to hour. Thus, a location that provides some useful forecast information for one time may not be a useful predictor a few hours later. Indeed, some processes that cause significant changes in wind power production operate predominantly in the vertical direction and thus cannot be monitored by employing a network of sensors at off-site locations. Hence, it is very challenging to determine the type of sensors and deployment locations to get the most benefit for a specific short-term forecast application. Two tools recently developed in the meteorological research community have the potential to help determine the locations and parameters to measure in order to get the maximum positive impact on forecast performance for a particular site and short-term look-ahead period. Both tools rely on the use of NWP models to assess the sensitivity of a forecast for a particular location to measurements made at a prior time (i.e. the look-ahead period) at points surrounding the target location. The fundamental hypothesis is that points and variables with high sensitivity are good candidates for measurements since information at those points are likely to have the most impact on the forecast for the desired parameter, location and look-ahead period. One approach is called the adjoint method (Errico and Vukicevic, 1992; Errico, 1997) and the other newer approach is known as Ensemble Sensitivity Analysis (ESA; Ancell and Hakim 2007; Torn and Hakim 2008). Both approaches have been tested on large-scale atmospheric prediction problems (e.g. forecasting pressure or precipitation over a relatively large region 24 hours ahead) but neither has been applied to mesoscale space-time scales of winds or any other variables near the surface of the earth. A number of factors suggest that ESA is better suited for short-term wind forecasting applications. One of the most significant advantages of this approach is that it is not necessary to linearize the mathematical representation of the processes in the underlying atmospheric model as required by the adjoint approach. Such a linearization may be especially problematic for the application of short-term forecasting of boundary layer winds in complex terrain since non-linear shifts in the structure of boundary layer due to atmospheric stability changes are a critical part of the wind power production forecast problem. The specific objective of work described in this paper is to test the ESA as a tool to identify measurement locations and variables that have the greatest positive impact on the accuracy of wind forecasts in the 0- to 6-hour look-ahead periods for the wind generation area of California's Tehachapi Pass during the warm (high generation) season. The paper is organized

Zack, J; Natenberg, E; Young, S; Manobianco, J; Kamath, C

2010-02-21T23:59:59.000Z

108

Short-Term Energy Outlook Annual Supplement 1995  

Gasoline and Diesel Fuel Update (EIA)

5) 5) Distribution Category UC-950 Short-Term Energy Outlook Annual Supplement 1995 Energy Information Administration Office of Energy Markets and End Use U.S. Department of Energy Washington, DC 20585 This report was prepared by the Energy Information Administration, the independent statistical and analytical agency within the Department of Energy. The information contained herein should not be construed as advocating or reflecting any policy position of the Department of Energy or any other organization. Energy Information Administration/ Short-Term Energy Outlook Annual Supplement 1995 ii Contacts Contacts The Short-Term Energy Outlook Annual Supplement is prepared by the Energy Information Administration (EIA), Office of Energy Markets and End Use (EMEU). General questions concerning the content of the report may be directed to W. Calvin Kilgore (202/586-1617),

109

Short-Term Energy Outlook, Annual Supplement 1994  

Gasoline and Diesel Fuel Update (EIA)

4) 4) Distribution Category UC-950 Short-Term Energy Outlook Annual Supplement 1994 Energy Information Administration Office of Energy Markets and End Use U.S. Department of Energy Washington, DC 20585 This report was prepared by the Energy Information Administration, the independent statistical and analytical agency within the Department of Energy. The information contained herein should not be construed as advocating or reflecting any policy position of the Department of Energy or any other organization. Energy Information Administration/ Short-Term Energy Outlook Annual Supplement 1994 ii Contacts Contacts The Short-Term Energy Outlook Annual Supplement is prepared by the Energy Information Administration (EIA), Office of Energy Markets and End Use (EMEU). General questions concerning the content of the report may be directed to W. Calvin Kilgore (202/586-1617),

110

Summary Short-Term Petroleum and Natural Gas Outlook  

Gasoline and Diesel Fuel Update (EIA)

Short-Term Petroleum and Natural Gas Outlook Short-Term Petroleum and Natural Gas Outlook 1/12/01 Click here to start Table of Contents Summary Short-Term Petroleum. and Natural Gas Outlook WTI Crude Oil Price: Base Case and 95% Confidence Interval Real and Nominal Crude Oil Prices OPEC Crude Oil Production 1999-2001 Total OECD Oil Stocks* U.S. Crude Oil Inventory Outlook U.S. Distillate Inventory Outlook Distillate Stocks Are Important Part of East Coast Winter Supply Retail Heating Oil and Diesel Fuel Prices Consumer Winter Heating Costs U.S. Total Gasoline Inventory Outlook Retail Motor Gasoline Prices* U.S. Propane Total Stocks Average Weekly Propane Spot Prices Current Natural Gas Spot Prices: Well Above the Recent Price Range Natural Gas Spot Prices: Base Case and 95% Confidence Interval Working Gas in Storage (Percentage Difference fron Previous 5-Year Average)

111

Model documentation report: Short-Term Hydroelectric Generation Model  

DOE Green Energy (OSTI)

The purpose of this report is to define the objectives of the Short- Term Hydroelectric Generation Model (STHGM), describe its basic approach, and to provide details on the model structure. This report is intended as a reference document for model analysts, users, and the general public. Documentation of the model is in accordance with the Energy Information Administration`s (AYE) legal obligation to provide adequate documentation in support of its models (Public Law 94-385, Section 57.b.2). The STHGM performs a short-term (18 to 27- month) forecast of hydroelectric generation in the United States using an autoregressive integrated moving average (UREMIA) time series model with precipitation as an explanatory variable. The model results are used as input for the short-term Energy Outlook.

Not Available

1993-08-01T23:59:59.000Z

112

Electricity storage for short term power system service (Smart Grid  

Open Energy Info (EERE)

storage for short term power system service (Smart Grid storage for short term power system service (Smart Grid Project) Jump to: navigation, search Project Name Electricity storage for short term power system service Country Denmark Coordinates 56.26392°, 9.501785° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":56.26392,"lon":9.501785,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

113

Short-Termed Integrated Forecasting System: 1993 Model documentation report  

Science Conference Proceedings (OSTI)

The purpose of this report is to define the Short-Term Integrated Forecasting System (STIFS) and describe its basic properties. The Energy Information Administration (EIA) of the US Energy Department (DOE) developed the STIFS model to generate short-term (up to 8 quarters), monthly forecasts of US supplies, demands, imports exports, stocks, and prices of various forms of energy. The models that constitute STIFS generate forecasts for a wide range of possible scenarios, including the following ones done routinely on a quarterly basis: A base (mid) world oil price and medium economic growth. A low world oil price and high economic growth. A high world oil price and low economic growth. This report is written for persons who want to know how short-term energy markets forecasts are produced by EIA. The report is intended as a reference document for model analysts, users, and the public.

Not Available

1993-05-01T23:59:59.000Z

114

Distributed Renewable Energy Generation Impacts on Microgrid Operation and Reliability  

Science Conference Proceedings (OSTI)

Microgrids incorporating distributed generation, and particularly those incorporating renewable energy technologies, have the potential to improve electric power system efficiency and reliability while providing novel benefits to their owners, operators, and the system as a whole. This report focuses on the impact of renewable energy technologies on microgrids and on the larger question of the impact of distributed generation and microgrids on the electric power system.

2002-02-06T23:59:59.000Z

115

ANALYSIS OF AVAILABILITY AND RELIABILITY IN RHIC OPERATIONS.  

SciTech Connect

RHIC has been successfully operated for 5 years as a collider for different species, ranging from heavy ions including gold and copper, to polarized protons. We present a critical analysis of reliability data for RHIC that not only identifies the principal factors limiting availability but also evaluates critical choices at design times and assess their impact on present machine performance. RHIC availability data are typical when compared to similar high-energy colliders. The critical analysis of operations data is the basis for studies and plans to improve RHIC machine availability beyond the 50-60% typical of high-energy colliders.

PILAT, F.; INGRASSIA, P.; MICHNOFF, R.

2006-06-26T23:59:59.000Z

116

Short-term energy outlook: Annual supplement 1989  

SciTech Connect

This Supplement is published once a year as a complement to the Short-Term Energy Outlook, Quarterly Projections (Outlook). The purpose is to review the accuracy of the forecasts presented in the Outlook, make comparisons with other independent energy forecasts, and examine current energy topics that affect the forecasts. A brief description of the content of each chapter follows below: Chapter 2 evaluates the accuracy of the short-term energy forecasts published in the last 6 issues of the Outlook, for 1988/1989. Chapter 3 discusses the economics of the petrochemical feedstock market, and describes a new model which more fully captures the determinants of feedstock demand. Chapter 4 examines present and proposed new methods of forecasting short-term natural gas prices at the wellhead and spot prices. Chapter 5 discusses the modeling of natural demand in the short term. Chapter 6 discusses regional trends in the demand for fuel by electric utilities. Chapter 7 focuses on industrial coal use trends in recent years. Chapter 8 compares EIA's base case energy projections as published in the Outlook (89/2Q) with recent projections made by three other major forecasting groups. The chapter focuses on macroeconomic assumptions, primary energy demand, and primary energy supply, showing the differences and similarities in the four forecasts.

1989-10-31T23:59:59.000Z

117

Integrated Short Term Navigation of a Towed Underwater Body*  

E-Print Network (OSTI)

Integrated Short Term Navigation of a Towed Underwater Body* G. Damy' M. Joannides2 F. LeGland3 M. An underwater body, to be called here- after the fish, is towed by a surface ship at the end of a few hundred cannot provide any position estimates of an underwater body such as a towed fish, but only position

LeGland, François

118

Short-Term Solar Energy Forecasting Using Wireless Sensor Networks  

E-Print Network (OSTI)

Short-Term Solar Energy Forecasting Using Wireless Sensor Networks Stefan Achleitner, Tao Liu in power output is a major concern and forecasting is, therefore, a top priority. We propose a sensing infrastructure to enable sensing of solar irradiance with application to solar array output forecasting

Cerpa, Alberto E.

119

Short-Term Energy Outlook: Quarterly projections. Fourth quarter 1993  

SciTech Connect

The Energy Information Administration (EIA) prepares quarterly, short-term energy supply, demand, and price projections for publication in February, May, August, and November in the Short-Term Energy Outlook (Outlook). An annual supplement analyzes the performance of previous forecasts, compares recent cases with those of other forecasting services, and discusses current topics related to the short-term energy markets. (See Short-Term Energy Outlook Annual Supplement, DOE/EIA-0202.) The forecast period for this issue of the Outlook extends from the fourth quarter of 1993 through the fourth quarter of 1994. Values for the third quarter of 1993, however, are preliminary EIA estimates (for example, some monthly values for petroleum supply and disposition are derived in part from weekly data reported in the Weekly Petroleum Status Report) or are calculated from model simulations using the latest exogenous information available (for example, electricity sales and generation are simulated using actual weather data). The historical energy data are EIA data published in the Monthly Energy Review, Petroleum Supply Monthly, and other EIA publications.

Not Available

1993-11-05T23:59:59.000Z

120

Short-term energy outlook. Quarterly projections, second quarter 1996  

Science Conference Proceedings (OSTI)

The Energy Information Administration prepares quarterly, short-term energy supply, demand, and price projections. The forecasts in this issue cover the second quarter of 1996 through the fourth quarter of 1997. Changes to macroeconomic measures by the Bureau of Economic Analysis have been incorporated into the STIFS model used.

NONE

1996-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Short-Term Energy Outlook - U.S. Energy Information ...  

U.S. Energy Information Administration (EIA)

Search EIA.gov. A-Z Index; A-Z Index A B C D E F G H I J K L M N O P Q R S T U V W XYZ ‹ Analysis & Projections Short-Term Energy Outlook . ...

122

Short-term energy outlook, Quarterly projections. Third quarter 1993  

Science Conference Proceedings (OSTI)

The Energy Information Administration (EIA) prepares quarterly, short-term energy supply, demand, and price projections for publication in February, May, August, and November in the Short-Term Energy Outlook (Outlook). An annual supplement analyzes the performance of previous forecasts, compares recent cases with those of other forecasting services, and discusses current topics related to the short-term energy markets. (See Short-Term Energy Outlook Annual Supplement, DOE/EIA-0202.) The forecast period for this issue of the Outlook extends from the third quarter of 1993 through the fourth quarter of 1994. Values for the second quarter of 1993, however, are preliminary EIA estimates (for example, some monthly values for petroleum supply and disposition are derived in part from weekly data reported in the Weekly Petroleum Status Report) or are calculated from model simulations using the latest exogenous information available (for example, electricity sales and generation are simulated using actual weather data). The historical energy data are EIA data published in the Monthly Energy Review, Petroleum Supply Monthly, and other EIA publications. Minor discrepancies between the data in these publications and the historical data in this Outlook are due to independent rounding.

NONE

1993-08-04T23:59:59.000Z

123

DOE/EIA-0202(87/4Q) Energy Information Administration Short-Term  

Gasoline and Diesel Fuel Update (EIA)

4Q) 4Q) Energy Information Administration Short-Term Energy Outlook Quarterly Projections October 1987 i- rt- jrt ort lort lort lort- iort- lort- ort- ort Tt- " t- . m erm Perm -Term -Term -Term -Term ,-Term -Term -Term -Term -Term -Term -Term -Term -Term -Term 71 e rrn TT1 "1 Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy "nergy -cry Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook ""'tlook Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term

124

EIA Short-Term Energy and Winter Fuels OutlookWinter Fuels Outlook  

U.S. Energy Information Administration (EIA)

Home heating oil retail price includes taxes. 16 Source: EIA Short-Term Energy Outlook, October 2012 Short-Term Energy and Winter Fuels Outlook October 10, 2012.

125

Reliability of Operation at SLAC in the LCLS Era  

Science Conference Proceedings (OSTI)

LCLS hardware availability has been above 90% for the first two commissioning runs of the accelerator. In this paper we compare the reliability data for LCLS (availability, MTBF and MTTR) to those of PEP-II, the e{sup +}e{sup -} collider operating previously at SLAC. It may be seen that the linac availability is not significantly different now than it was before, while the availability of the whole LCLS facility is significantly higher than that of the PEP-II facility as a whole (which was about 87%). Most of the improvement is in the MTTR. Ways to improve availability towards the goal of 95% are discussed.

Wienands, U.; Allen, W.B.; Colocho, W.; Erickson, R.; Stanek, M.; /SLAC

2009-06-19T23:59:59.000Z

126

Energy Information Administration/Short-Term Energy Outlook - October 2005  

Gasoline and Diesel Fuel Update (EIA)

5 5 1 October 2005 Short-Term Energy Outlook and Winter Fuels Outlook October 12, 2005 Release (Next Update: November 8, 2005) Overview Warnings from previous Outlooks about the potential adverse impacts of an active hurricane season on domestic energy supply and prices are unfortunately being reflected in the challenging realities brought about by Hurricanes Katrina and Rita. The impact of the hurricanes on oil and natural gas production, oil refining, natural gas processing, and pipeline systems have further strained already-tight natural gas and petroleum product markets on the eve of the 2005-2006 heating season (October through March). This combined Short-Term Energy and Winter Fuels Outlook provides a current view of domestic energy supply and

127

Short-Term Energy and Winter Fuels Outlook October 2013  

Gasoline and Diesel Fuel Update (EIA)

and Winter Fuels Outlook October 2013 1 and Winter Fuels Outlook October 2013 1 October 2013 Short-Term Energy and Winter Fuels Outlook (STEO) Highlights  EIA projects average U.S. household expenditures for natural gas and propane will increase by 13% and 9%, respectively, this winter heating season (October 1 through March 31) compared with last winter. Projected U.S. household expenditures are 2% higher for electricity and 2% lower for heating oil this winter. Although EIA expects average expenditures for households that heat with natural gas will be significantly higher than last winter, spending for gas heat will still be lower than the previous 5-year average (see EIA Short-Term Energy and Winter Fuels Outlook slideshow).  Brent crude oil spot prices fell from a recent peak of $117 per barrel in early September to

128

Short-term hydroelectric generation model. Model documentation report  

DOE Green Energy (OSTI)

The purpose of this report is to define the objectives of the Energy Information Administration`s (EIA) Short-Term Hydroelectric Generation Model (STHGM), describe its basic approach, and to provide details on the model structure. This report is intended as a reference document for model analysts, users, and the general public. Documentation of the model is in accordance with the EIA`s legal obligation to provide adequate documentation in support of its models.

NONE

1996-12-01T23:59:59.000Z

129

Electricity price short-term forecasting using artificial neural networks  

Science Conference Proceedings (OSTI)

This paper presents the System Marginal Price (SMP) short-term forecasting implementation using the Artificial Neural Networks (ANN) computing technique. The described approach uses the three-layered ANN paradigm with back-propagation. The retrospective SMP real-world data, acquired from the deregulated Victorian power system, was used for training and testing the ANN. The results presented in this paper confirm considerable value of the ANN based approach in forecasting the SMP.

Szkuta, B.R.; Sanabria, L.A.; Dillon, T.S. [La Trobe Univ., Melbourne (Australia). Applied Computing Research Inst.

1999-08-01T23:59:59.000Z

130

Short-Term Energy Outlook - U.S. Energy Information Administration ...  

U.S. Energy Information Administration (EIA)

Greenhouse gas data, voluntary report- ing, electric power plant emissions. Highlights Short-Term Energy Outlook ...

131

Short-Term Energy Outlook Model Documentation: Carbon Dioxide (CO2) Emissions Model  

Reports and Publications (EIA)

Description of the procedures for estimating carbon dioxide emissions in the Short-Term Energy Outlook

Information Center

2009-08-11T23:59:59.000Z

132

Operator Reliability Experiments Using Power Plant Simulators, Volumes 1-3: Volumes 1-3  

Science Conference Proceedings (OSTI)

Operator reliability experiment (ORE) data, collected on actual operating crews from three PWR and three BWR simulators, enhances understanding of their performance during emergency events. These data form the basis for quantifying human reliability in probabilistic risk assessment (PRA).

1980-08-01T23:59:59.000Z

133

Short-term energy outlook: Quarterly projections, second quarter 1997  

Science Conference Proceedings (OSTI)

The Energy Information Administration (EIA) prepares quarterly short-term energy supply, demand, and price projections for publication in January, April, July, and October in the Outlook. The forecast period for this issue of the Outlook extends from the second quarter of 1997 through the fourth quarter of 1998. Values for the first quarter of 1997, however, are preliminary EIA estimates (for example, some monthly values for petroleum supply and disposition are derived in part from weekly data reported in EIA`s Weekly Petroleum Status Report) or are calculated from model simulations that use the latest exogenous information available (for example, electricity sales and generation are simulated by using actual weather data). The historical energy data, compiled in the second quarter 1997 version of the Short-Term Integrated Forecasting System (STIFS) database, are mostly EIA data regularly published in the Monthly Energy Review, Petroleum Supply Monthly, and other EIA publications. Minor discrepancies between the data in these publications and the historical data in this Outlook are due to independent rounding. The STIFS database is archived quarterly and is available from the National Technical Information Service. The STIFS model is driven principally by three sets of assumptions or inputs: estimates of key macroeconomic variables, world oil price assumptions, and assumptions about the severity of weather. Macroeconomic estimates are produced by DRI/McGraw-Hill but are adjusted by EIA to reflect EIA assumptions about the world price of crude oil, energy product prices, and other assumptions which may affect the macroeconomic outlook. By varying the assumptions, alternative cases are produced by using the Short-Term Integrated Forecasting System (STIFS). 34 figs., 19 tabs.

NONE

1997-04-01T23:59:59.000Z

134

Short-term energy outlook. Quarterly projections, first quarter 1996  

DOE Green Energy (OSTI)

The Energy Information Administration (EIA) prepares quarterly, short-term energy supply, demand, and price projections for publication in February, May, August, and November in the Outlook. The forecast period for this issue of the Outlook extends from the first quarter of 1996 through the fourth quarter of 1997. Values for the fourth quarter of 1995, however, are preliminary EIA estimates (for example, some monthly values for petroleum supply and disposition are derived in part from weekly data reported in the Weekly Petroleum Status Report) or are calculated from model simulations using the latest exogenous information available (for example, electricity sales and generation are simulated using actual weather data). The historical energy data, compiled into the first quarter 1996 version of the Short-Term Integrated Forecasting System (STIFS) database, are mostly EIA data regularly published in the Monthly Energy Review, Petroleum Supply Monthly, and other EIA publications. Minor discrepancies between the data in these publications and the historical data in this Outlook are due to independent rounding. The STIFS database is archived quarterly and is available from the National Technical Information Service. The cases are produced using the Short-Term Integrated Forecasting System (STIFS). The STIFS model is driven principally by three sets of assumptions or inputs: estimates of key macroeconomic variables, world oil price assumptions, and assumptions about the severity of weather. Macroeconomic estimates are produced by DRI/McGraw-Hill but are adjusted by EIA to reflect EIA assumptions about the world price of crude oil, energy product prices, and other assumptions which may affect the macroeconomic outlook.

NONE

1996-02-01T23:59:59.000Z

135

Energy Information Administration/Short-Term Energy Outlook - February 2005  

Gasoline and Diesel Fuel Update (EIA)

February 2005 February 2005 1 Short-Term Energy Outlook February 2005 Winter Fuels Update (Figure 1) Despite some cold weather during the second half of January, expected average consumer prices for heating fuels this heating season are little changed since the January Outlook, leaving projections for household heating fuel expenditures about the same as previously reported. Heating oil expenditures by typical Northeastern households are expected to average 32 percent above last winter's levels, with residential fuel oil prices averaging $1.82 per gallon for the October-to-March period. Expenditures for propane-heated households are expected to increase about

136

Energy Information Administration/Short-Term Energy Outlook - January 2005  

Gasoline and Diesel Fuel Update (EIA)

January 2005 January 2005 1 Short-Term Energy Outlook January 2005 Winter Fuels Update (Figure 1) Consumer prices for heating fuels are relatively unchanged since the December Outlook, leaving projections for household heating fuel expenditures about the same as previously projected, despite continued warm weather in the middle of the heating season. Heating oil expenditures by typical Northeastern households are expected to average 30 percent above last winter's levels, with residential fuel oil prices averaging $1.82 per gallon for the October-to-March period. Expenditures for propane-heated households are expected to increase about 20 percent this winter.

137

Short-term energy outlook, quarterly projections, second quarter 1998  

SciTech Connect

The Energy Information Administration (EIA) prepares quarterly short-term energy supply, demand, and price projections. The details of these projections, as well as monthly updates, are available on the Internet at: www.eia.doe.gov/emeu/steo/pub/contents.html. The paper discusses outlook assumptions; US energy prices; world oil supply and the oil production cutback agreement of March 1998; international oil demand and supply; world oil stocks, capacity, and net trade; US oil demand and supply; US natural gas demand and supply; US coal demand and supply; US electricity demand and supply; US renewable energy demand; and US energy demand and supply sensitivities. 29 figs., 19 tabs.

NONE

1998-04-01T23:59:59.000Z

138

www.inescc.pt 1 Short Term Load Forecasting Using Gaussian Process Models  

E-Print Network (OSTI)

Abstract — The electrical deregulated market increases the need for short-term load forecast algorithms in order to assist electrical utilities in activities such as planning, operating and controlling electric energy systems. Methodologies based on regression methods have been widely used with satisfactory results. However, this type of approach has some shortcomings. This paper proposes a short-term load forecast methodology applied to distribution systems, based on Gaussian Process models. This methodology establishes an interesting and valuable approach to short-term forecasting applied to the electrical sector. The results obtained are in accordance with the best values of expected errors for these types of methodologies. A careful study of the input variables (regressors) was made, from the point of view of contiguous values, in order to include the strictly necessary instances of endogenous variables. Regressors representing the trend of consumption, at homologous time intervals in the past, were also included in the input vector. The proposed approach was tested on real-load from three medium-sized supply electrical distribution substations located in the center of Portugal. To test the performance of the model in different load situations, the case study includes three different electrical distribution substations representative of typical load consuming patterns,

Inesc Coimbra; João Lourenço; Paulo Santos; Lourenço J. M; Santos P. J

2010-01-01T23:59:59.000Z

139

Short-term energy outlook, Annual supplement 1995  

SciTech Connect

This supplement is published once a year as a complement to the Short- Term Energy Outlook, Quarterly Projections. The purpose of the Supplement is to review the accuracy of the forecasts published in the Outlook, make comparisons with other independent energy forecasts, and examine current energy topics that affect the forecasts. Chap. 2 analyzes the response of the US petroleum industry to the recent four Federal environmental rules on motor gasoline. Chap. 3 compares the EIA base or mid case energy projections for 1995 and 1996 (as published in the first quarter 1995 Outlook) with recent projections made by four other major forecasting groups. Chap. 4 evaluates the overall accuracy. Chap. 5 presents the methology used in the Short- Term Integrated Forecasting Model for oxygenate supply/demand balances. Chap. 6 reports theoretical and empirical results from a study of non-transportation energy demand by sector. The empirical analysis involves the short-run energy demand in the residential, commercial, industrial, and electrical utility sectors in US.

1995-07-25T23:59:59.000Z

140

Short-Term Test Results: Multifamily Home Energy Efficiency Retrofit  

SciTech Connect

Multifamily deep energy retrofits (DERs) represent great potential for energy savings, while also providing valuable insights on research-generated efficiency measures, cost-effectiveness metrics, and risk factor strategies for the multifamily housing industry. The Bay Ridge project is comprised of a base scope retrofit with a goal of achieving 30% savings (relative to pre-retrofit), and a DER scope with a goal of 50% savings (relative to pre-retrofit). The base scope has been applied to the entire complex, except for one 12-unit building which underwent the DER scope. Findings from the implementation, commissioning, and short-term testing at Bay Ridge include air infiltration reductions of greater than 60% in the DER building; a hybrid heat pump system with a Savings to Investment Ratio (SIR) > 1 (relative to a high efficiency furnace) which also provides the resident with added incentive for energy savings; and duct leakage reductions of > 60% using an aerosolized duct sealing approach. Despite being a moderate rehab instead of a gut rehab, the Bay Ridge DER is currently projected to achieve energy savings ? 50% compared to pre-retrofit, and the short-term testing supports this estimate.

Lyons, J.

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Short-term energy outlook. Quarterly projections, third quarter 1996  

SciTech Connect

The Energy Information Administration (EIA) prepares quarterly, short-term energy supply, demand, and price projections for publication in January, April, July, and October in the Outlook. The forecast period for this issue of the Outlook extends from the third quarter of 1996 through the fourth quarter of 1997. Values for the second quarter of 1996, however, are preliminary EIA estimates (for example, some monthly values for petroleum supply and disposition are derived in part from weekly data reported in the Weekly Petroleum Status Report) or are calculated from model simulations using the latest exogenous information available (for example, electricity sales and generation are simulated using actual weather data). The historical energy data, compiled in the third quarter 1996 version of the Short-Term Integrated Forecasting System (STIFS) database, are mostly EIA data regularly published in the Monthly energy Review, Petroleum Supply Monthly, and other EIA publications. Minor discrepancies between the data in these publications and the historical data in this Outlook are due to independent rounding. The STIFS database is archived quarterly and is available from the National Technical Information Service.

NONE

1996-07-01T23:59:59.000Z

142

Efficient Tracking for Short-Term Multi-Company Networks  

E-Print Network (OSTI)

Tracking of shipments is an important element of customer service in the transportation industry; and essential for logistics services as merge-in-transit. However, contemporary tracking systems are designed for use within a single company, and are thus invariably inadequate for multi-company environments. The single company focus has led to a reduced span of monitoring and a diluted accessibility of information due to proprietary tracking codes and information architectures centred on the tracking service provider. This paper presents a novel forwarder-independent approach for solving the difficulties of tracking in multi-company supply networks. The research argues that the proposed tracking approach is superior to contemporary approaches for material flow tracking in short-term multi-company distribution networks.

Mikko Kärkkäinen; Timo Ala-Risku; Kary Främling

2004-01-01T23:59:59.000Z

143

Natural Gas Summary from the Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

63 and $2.72 per MMBtu during the months through October without the wide variations that occurred over the spring and early summer months (Short-Term Energy Outlook, August 2002). Prices are expected to be less variable unless unusually hot weather in late summer results in gas being diverted from storage to meet the added cooling demand, or colder-than-normal weather for October results in an unexpected drawdown of storage stocks. Overall in 2002, wellhead prices are expected to average about $2.73 per MMBtu compared with $4.00 in 2001. Prices during the upcoming heating season (November through March), assuming normal weather, are expected to average close to $3.12 per MMBtu, which is about $0.75 higher than last winter's price but only about 10-15 percent higher than current prices.

144

Energy Information Administration/Short-Term Energy Outlook - April 2005  

Gasoline and Diesel Fuel Update (EIA)

April 2005 April 2005 1 Short-Term Energy Outlook April 2005 2005 Summer Motor Gasoline Outlook (Figure 1) Gasoline prices in 2005 are projected to remain high, at an expected average of $2.28 per gallon for the April to September summer season, 38 cents above last summer. Similar high motor gasoline prices are expected through 2006. Monthly average prices are projected to peak at about $2.35 per gallon in May. Summer diesel fuel prices are expected to average $2.24 per gallon. As in 2004, the primary factor behind these price increases is crude oil costs. WTI, for example, is projected to average 37 cents per gallon higher than last summer. High world oil demand will continue to support crude oil prices and increase competition for

145

Energy Information Administration/Short-Term Energy Outlook - June 2005  

Gasoline and Diesel Fuel Update (EIA)

5 5 1 Short-Term Energy Outlook June 2005 2005 Summer Motor Fuels Outlook Update (Figure 1) In May, while West Texas Intermediate (WTI) crude oil prices oscillated from the low $50s range to $47 and back again, retail gasoline prices declined steadily from about $2.24 per gallon at the beginning of the month to $2.10 on May 30. On June 6, average retail prices were $2.12 per gallon. Pump gasoline prices for the summer (April-September) are now projected to average $2.17 per gallon, similar to last month's projection but still about 26 cents per gallon above the year-ago level. Crude oil prices are expected to remain high enough to keep monthly average gasoline prices above $2.00 per gallon through 2006. The

146

Microsoft Word - Alcoa_short-term_amendments_CX.docx  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2 2 REPLY TO ATTN OF: KEC-4 SUBJECT: Environmental Clearance Memorandum Mark Miller Account Executive, Long-term Sales and Purchases - PT-5 Proposed Action: Short-term Additional Amendments to the Alcoa Power Sales Agreement Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): A2 - Clarifying or administrative contract actions Location: Portland, OR and Ferndale, WA Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: BPA proposes to execute one or more additional amendments to its existing 2009 Power Sales Agreement (Agreement) with Alcoa, Inc. (Alcoa) to further extend the Agreement's Initial Period provisions. The current date for expiration of these provisions under the most recent amendment (Amendment Number 2) is July 31, 2012.

147

Energy Information Administration/Short-Term Energy Outlook - April 2006  

Gasoline and Diesel Fuel Update (EIA)

6 6 1 April 2006 Short-Term Energy Outlook and Summer Fuels Outlook April 11, 2006 Release Contents Overview Global Petroleum Markets U.S. Petroleum Markets Motor Gasoline Diesel Fuel Natural Gas Markets Electricity Markets Coal Markets Overview Continued steady world oil demand growth, combined with only modest increases in world spare oil production capacity and the continuing risks of geopolitical instability, are expected to keep crude oil prices high through 2006. The price of West Texas Intermediate (WTI) crude oil is projected to average $65 per barrel in 2006 and $61 in 2007 (Figure 1. West Texas Intermediate Crude Oil Price). Retail regular gasoline prices are projected to average $2.50 per gallon in 2006 and $2.40 in

148

Models for Short-Term Production Planning of Cogeneration Plants  

E-Print Network (OSTI)

The short-term production planning problem for a district heating system is a well-known but difficult optimization problem. In a district heating plant several types of energy producing units are used, the most important being the cogeneration unit, which produces both heat and electricity. The net electricity is sold at the electricity market. Most plants also have a heat water storage. Finding the optimal production of both heat and electricity and the optimal use of the heat water storage is a challenging mixed optimization problem. The production planning may be divided into two sub-problems. The unit commitment problem determines which units should be on or off and in which different mode the unit should run. The economic dispatch problem finds the optimal production plan given the units on and running modes. In this paper we formulate a new approach for the mathematical modeling of the economic dispatch problem. The model objective function is nonlinear, with nonlinear constrain...

Erik Dotzauer; Kenneth Holmström

1997-01-01T23:59:59.000Z

149

January 2013 Short-Term Energy Outlook (STEO)  

Gasoline and Diesel Fuel Update (EIA)

(STEO) (STEO)  This edition of the Short-Term Energy Outlook is the first to include forecasts for 2014.  EIA expects that the Brent crude oil spot price, which averaged $112 per barrel in 2012, will fall to an average of $105 per barrel in 2013 and $99 per barrel in 2014. The projected discount of West Texas Intermediate (WTI) crude oil to Brent, which averaged $18 per barrel in 2012, falls to an average of $16 per barrel in 2013 and $8 per barrel in 2014, as planned new pipeline capacity lowers the cost of moving Mid-continent crude oil to the Gulf Coast refining centers.  EIA expects that falling crude prices will help national average regular gasoline retail prices

150

Energy Information Administration/Short-Term Energy Outlook - July 2005  

Gasoline and Diesel Fuel Update (EIA)

July 2005 July 2005 1 Short-Term Energy Outlook July 2005 2005 Summer Motor Fuels Outlook Update (Figure 1) Retail regular-grade gasoline prices moved up from about $2.12 per gallon at the beginning of June to $2.33 on July 11. Gasoline pump prices for the summer (April-September) are now projected to average $2.25 per gallon, 8 cents per gallon higher than last month's projection and about 35 cents per gallon above the year-ago level. Crude oil prices are expected to remain high enough to keep quarterly average gasoline prices above $2.20 per gallon through 2006. The projected average for retail diesel this summer is $2.33 per gallon, up about 56 cents per gallon from last summer. Nationally, annual average diesel fuel prices

151

California’s Economic Outlook: Short-term Recovery But Longer-term Uncertainties  

E-Print Network (OSTI)

The Long-Term Demographic Outlook for California and LosCALIFORNIA’S ECONOMIC OUTLOOK: SHORT-TERM RECOVERY BUTCalifornia’s short-term outlook remains one of expansion,

Hurd, Joseph; Mitchell, Daniel J.B.

2005-01-01T23:59:59.000Z

152

CloudCast: Cloud Computing for Short-Term Weather Forecasts  

Science Conference Proceedings (OSTI)

CloudCast provides clients with personalized short-term weather forecasts based on their current location using cloud services

Dilip Kumar Krishnappa; David Irwin; Eric Lyons; Michael Zink

2013-01-01T23:59:59.000Z

153

Natural Gas Summary from the Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

average $2.83 per MMBtu in 2002 compared with about $4.00 last year (Short-Term Energy Outlook, June 2002). Average wellhead prices have increased by nearly 50 percent from $2.09 per MMBtu in February to an estimated $3.11 per MMBtu in May. Spot prices at the Henry Hub have also increased, rising more than $1.00 per MMBtu since early February. It is atypical to see higher spot gas prices in the cooling season than during the heating season, particularly when working gas in underground storage is at high levels, as it has been for the past several months. As of the end of May, working gas levels were more than 20 percent above the previous 5-year average for that month. Moreover, gas-directed drilling, while down sharply from summer 2001 levels, is still quite strong from a historical perspective. The gas rig count as of May 31 was up 22 percent from the recent low of 591 for the week ending April 5.

154

Natural Gas Summary from the Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

4.41 per MMBtu in December 2003, although spot prices are expected to average $5.38 (Short-Term Energy Outlook, December 2003). The average wellhead price is expected to increase moderately to $4.56 during the first three months of 2004. Natural gas prices were lower in November than previously expected but forward price expectations remain sensitive to weather conditions. Prices increased rapidly in futures trading in early December as some cold weather moved into the Eastern United States and reported withdrawals from gas storage were slightly larger than expected. Spot prices above $5 per MMBtu remain likely over the next few months if normal (or colder) weather prevails, especially with oil prices remaining at relatively high levels. Natural gas storage levels are still above average and hold the potential to push prices back down if warm temperatures and weak heating demand materialize later in the winter, just as upward spikes remain a strong possibility if the weather turns cold.

155

Natural Gas Summary from the Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

about $3.49 per MMBtu through December 2002 and then increase to $3.76 in January 2003, the peak demand month of the heating season (Short-Term Energy Outlook, released November 7, 2002). Natural gas prices were higher than expected in October as storms in the Gulf of Mexico in late September temporarily shut in some gas production, causing spot prices at the Henry Hub and elsewhere to rise above $4.00 per million Btu for most of October. In addition, early winter-like temperatures, particularly in the Midwest and Northeast, increased demand for natural gas, placing upward pressure on gas prices. Overall in 2002, wellhead prices are expected to average about $2.84 per MMBtu compared with $4.00 in 2001. Prices during the heating season (November through March), assuming normal weather, are expected to average $3.56 per MMBtu, which is about $1.20 higher than last winter's price. Prices to residential customers during the heating season are expected to average $7.81 per MMBtu compared with $7.14 last winter. In 2003, wellhead prices are projected to average $3.28 per MMBtu, or about $0.44 per MMBtu more than in 2002, owing to expectations of increasing economic growth, little or no change in the annual average crude oil price for 2003, and lower storage levels for most of 2003 compared with 2002 levels.

156

Natural Gas Summary from the Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

7 per MMBtu during the last 3 months of 2003 and increase to $4.32 in January 2004 (Short-Term Energy Outlook, October 2003). Prices have fallen somewhat from the unusually high levels that prevailed in the first half of the year and most of July, as mild summer weather and reduced industrial demand allowed record storage refill rates. As of October 3, 2003, working gas levels were only 1 percent below the 5-year average and, barring any disruptions, are on target to reach 3 Tcf by the end of October. With the improved storage situation, wellhead prices during the upcoming heating season (November through March), assuming normal weather, are expected to be about 13 percent less than last winter ($4.17 vs. $4.68 per MMBtu). But prices in the residential sector are projected to be about 9 percent higher than last winter, as the recent decline in wellhead prices is too recent and insufficient to offset the impact of the substantial spring-summer increase in wellhead prices on residential prices. Overall in 2003, wellhead prices are expected to average $4.75 per MMBtu, which is nearly $2 more than the 2002 annual average and the largest year-to-year increase on record. For 2004, wellhead prices are projected to drop by nearly $0.90 per MMBtu, or about 20 percent, to $3.86 per MMBtu as the overall supply situation improves.

157

Natural Gas Summary from the Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

in September and range between $4.37 and $4.58 per MMBtu in the last 3 months of 2003 (Short-Term Energy Outlook, September 2003). Spot prices at the Henry Hub have fallen somewhat from the unusually high levels that prevailed in the first half of the year and most of July, as mild summer weather in many areas of the country has reduced cooling demand and allowed record storage refill rates. As of September 5, working gas levels were only 5.5 percent below the 5-year average and, barring any disruptions, are on target to reach 3 Tcf by the end of October. However, gas prices remain high-wellhead prices this summer are estimated to be 60 to 70 percent higher than levels last summer. Overall in 2003, wellhead prices are expected to average $4.84 per MMBtu, which is nearly $2 more than the 2002 annual average and the largest year-to-year increase on record. For 2004, assuming normal weather, wellhead prices are projected to drop by about $1 per MMBtu, or almost 20 percent, to $3.89 per MMBtu, as the overall supply situation improves.

158

Natural Gas Summary from the Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

5.57 per MMBtu in January 2004 and $5.40 in February, and then decrease to $4.77 in March as the heating season winds down (Short-Term Energy Outlook, January 2004). Spot prices were quite variable in December, with prices at the Henry Hub starting the month at around $5.00 per MMBtu, spiking to roughly $7.00 in the middle of the month, then falling to $5.50 toward the end of the month as warmer-than-normal weather eased demand. Spot prices will likely remain well above $5.00 over the next few months if normal or colder weather prevails, especially with oil prices remaining at relatively high levels. (Oil prices this winter are expected to average $31.35 per barrel (19 cents higher than last winter's average), or 5.41 per MMBtu.) Natural gas storage levels were 8 percent above average as of January 2, which could place downward pressure on prices if warm temperatures and weak heating demand occur later this winter, just as rising prices are possible if the weather becomes colder. Overall in 2004, natural gas wellhead prices are expected to average $4.73 per MMBtu, while spot prices will average nearly $5.00. In 2005, natural gas spot prices are projected to fall to an average of $4.83 per MMBtu under the assumption that domestic and imported supply can continue to grow by about 1-1.5 percent per year.

159

Natural Gas Summary from the Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

Now that the heating season has ended, natural gas wellhead prices have fallen from the exceptionally high levels seen in February and early March. Nevertheless, they still remain historically and unseasonably high, hovering around $5.00 per MMBtu. EIA projects that natural gas wellhead prices will remain above $5.00 per MMBtu in April and then decrease to $4.36 in May and $4.26 in June (Short-Term Energy Outlook, April 2003). Wellhead prices for the 2002-2003 heating season (November through March) averaged $4.44 per MMBtu, or $2.08 more than last winter's price. Overall in 2003, wellhead prices are projected to increase about $1.53 per MMBtu over the 2002 level to $4.40 per MMBtu. This projection is based on the expectation of lower volumes of natural gas in underground storage compared with last year and continued increases in demand over 2002 levels. Cold temperatures this past winter led to a record drawdown of storage stocks. By the end of March, estimated working gas stocks were 676 Bcf (prior estimates were 696 Bcf), which is the lowest end-of-March level in EIA records and 44 percent below the previous 5-year average. In 2004, continued tightness of domestic natural gas supply and high demand levels are expected to keep the average wellhead price near the 2003 level.

160

Natural Gas Summary from the Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

4.20 per MMBtu through January 2003 and then increase to $4.61 in February and $4.23 in March (Short-Term Energy Outlook, released January 8, 2003). Wellhead prices for the overall heating season (November through March), assuming normal weather, are expected to average about $4.10 per MMBtu, or $1.74 more than last winter's levels, while prices to residential customers are expected to average $8.51 per MMBtu compared with $7.14 last winter. Natural gas prices were higher than expected in November and December as below-normal temperatures throughout much of the nation increased heating demand, placing upward pressure on gas prices. Spot prices at the Henry Hub climbed above $5.00 per MMBtu in the second week of December and stayed near or above this threshold through the end of the month. Overall in 2002, wellhead prices are expected to average $2.90 per MMBtu compared with $4.00 in 2001. In 2003, average wellhead prices are projected to increase about $1.00 per MMBtu over the 2002 level to $3.90 per MMBtu, owing to expectations of higher demand levels than in 2002 and lower storage levels for most of the year compared with 2002 levels.

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Natural Gas Summary from the Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

8 per MMBtu during the last 2 months of 2003 and increase to $4.36 in January 2004 (Short-Term Energy Outlook, November 2003). Prices have fallen in the past few months as mild weather and reduced industrial demand have allowed record storage refill rates. As of October 31, 2003, working gas levels had reached 3,155 Bcf, which is about 3 percent higher than the 5-year average and the first time since October 2002 that stocks exceeded the year-earlier levels. With the improved storage situation, wellhead prices during the current heating season (November through March) are expected to be about 12 percent less than last winter ($4.12 vs. $4.68 per MMBtu). However, prices in the residential sector will likely be about 8 percent higher than last winter, as accumulated natural gas utility costs through 2003 are recovered in higher household delivery charges. Overall in 2003, wellhead prices are expected to average $4.76 per MMBtu, which is nearly $2 more than the 2002 annual average and the largest year-to-year increase on record. For 2004, wellhead prices are projected to drop by nearly $0.90 per MMBtu, or about 18 percent, to $3.88 per MMBtu as the overall supply situation improves.

162

Natural Gas Summary from the Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

the rest of the winter and the first part of spring, with prices averaging $5.19 per MMBtu through March and $4.58 in April (Short-Term Energy Outlook, February 2004). Wellhead prices for the current heating season (November 2003 through March 2004) are expected to average $4.99 per MMBtu, or about 7 percent higher than last winter's level. Spot prices at the Henry Hub averaged $5.90 per MMBtu in January as cold temperatures (6 percent colder than normal nationally and 19 percent colder than normal in the Northeast) kept natural gas prices and heating demand high. Despite the severe weather, natural gas storage stocks were 3 percent above average as of January 30 and spot prices in early February have moved down somewhat. Overall in 2004, spot prices are expected to average about $4.90 per MMBtu and wellhead prices are expected to average $4.63 per MMBtu, declining moderately from the 2003 levels. In 2005, natural gas spot prices are projected to average about $5.00 per MMBtu, under the assumption that domestic and imported supply can continue to grow by about 1 percent per year.

163

Natural Gas Summary from the Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

this summer and continue at elevated levels through the rest of 2003 (Short-Term Energy Outlook, June 2003). Natural gas wellhead prices are expected to average $5.40 per MMBtu in June and remain above $5.13 through December 2003. Spot prices at the Henry Hub have stayed well above $5.00 per MMBtu on a monthly basis since the beginning of the year and have been above $6.00 for the first 10 days of June. The low level of underground storage is the principal reason for these unusually high prices. As of June 6, 2003, working gas stocks were 1,324 Bcf, which is about 35 percent below year-earlier levels and 25 percent below the 5-year average. Natural gas prices are likely to stay high as long as above-normal storage injection demand competes with industrial and power sector demand for gas. Overall in 2003, wellhead prices are projected to increase about $2.33 per MMBtu (the largest U.S. annual wellhead price increase on record) over the 2002 level to a record annual high of about $5.20 per MMBtu. For 2004, prices are projected to ease only moderately, as supplies are expected to remain tight.

164

Natural Gas Summary from the Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

range from $2.91 to $3.19 per MMBtu through December 2002 and then increase to $3.53 in January 2003, the peak demand month of the heating season (Short-Term Energy Outlook, October 2002). Natural gas prices climbed sharply in late September as hurricanes Isidore and Lili caused production shut downs in the Gulf of Mexico. However, this price surge is expected to be short-lived, unless the weather in October is unusually cold or if additional storm activity in the Gulf curbs production further. Overall in 2002, wellhead prices are expected to average about $2.76 per MMBtu compared with $4.00 in 2001. Prices during the upcoming heating season (November through March), assuming normal weather, are expected to average $3.32 per MMBtu, which is about $0.96 higher than last winter's price. Prices to residential customers during the heating season are expected to average $7.55 per MMBtu compared with $7.14 last winter.

165

Natural Gas Summary from the Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

prices will remain relatively high during the storage refill season (April through October) and the rest of 2004. Wellhead prices are expected to average $4.87 per MMBtu in April and May, $4.71 from June through October, and $5.12 for November and December (Short-Term Energy Outlook, April 2004). Spot prices during the storage refill months will likely average $5.23 per MMBtu, virtually the same as the average price ($5.22) this past heating season. Overall in 2004, spot prices are expected to average $5.31 per MMBtu, slightly less than the 2003 price ($5.35), while wellhead prices will average about $4.90. In 2005, natural gas spot prices will likely average about $5.25 per MMBtu, under the assumption that domestic supply can continue to grow by about 1 percent per year. Total available supply (including imports and storage inventories) is expected to increase to 22.31 Tcf in 2004 compared with 21.78 Tcf in 2003. Storage stocks at the end of the traditional heating season (March 31) were about 6 percent less than the 5-year average but nearly 50 percent more than year-earlier levels.

166

Short-term energy outlook, quarterly projections, first quarter 1998  

Science Conference Proceedings (OSTI)

The forecast period for this issue of the Outlook extends from the first quarter of 1998 through the fourth quarter of 1999. Values for the fourth quarter of 1997, however, are preliminary EIA estimates (for example, some monthly values for petroleum supply and disposition are derived in part from weekly data reported in EIA`s Weekly Petroleum Status Report) or are calculated from model simulations that use the latest exogenous information available (for example, electricity sales and generation are simulated by using actual weather data). The historical energy data, compiled in the first quarter 1998 version of the Short-Term Integrated Forecasting System (STIFS) database, are mostly EIA data regularly published in the Monthly Energy Review, Petroleum Supply Monthly, and other EIA publications. Minor discrepancies between the data in these publications and the historical data in this Outlook are due to independent rounding. The STIFS model is driven principally by three sets of assumptions or inputs: estimates of key macroeconomic variables, world oil price assumptions, and assumptions about the severity of weather. Macroeconomic estimates are adjusted by EIA to reflect EIA assumptions which may affect the macroeconomic outlook. By varying the assumptions, alternative cases are produced by using the STIFS model. 24 figs., 19 tabs.

NONE

1998-01-01T23:59:59.000Z

167

An Empirical Analysis of Analysts' Target Prices: Short Term . . .  

E-Print Network (OSTI)

Using a large database of analysts' target prices, we examine short-term market reactions to target price announcements and long-term co-movement of target and stock prices. We find a significant market reaction to the information contained in analysts' target prices, both unconditional and conditional on contemporaneously issued stock recommendations and earnings forecast revisions. For example, the spread in average announcement day abnormal returns between positive and negative target price revisions is as high as 7 percent. We also find that stock recommendations and earnings forecast revisions are informative controlling for the information in target prices. Using a cointegration approach, we explore the long-term behavior of market and target prices and estimate the system's long-term equilibrium. In this equilibrium a typical firm's one-year ahead target price is 22 percent higher than its current market price. Finally, while market prices react to the information conveyed in analysts' reports, we show that any subsequent corrections towards the long-term equilibrium are, in effect, done by analysts alone.

Alon Brav; Reuven Lehavy

2001-01-01T23:59:59.000Z

168

Evaluation of a short-term residential building test method  

SciTech Connect

The purpose of this project is to evaluate the effectiveness of an energy performance analysis methodology developed by the Solar Energy Research Institute (SERI). The methodology (STEM/PSTAR) uses data collected from short-term tests conducted over a 3-day period as inputs to a model for predicting long-term performance. Under subcontract to GEOMET, SERI performed the tests on GEOMET's two research houses in Gaithersburg, Maryland, and in a blind test, predicted the heating load and fuel use for a historical period for which detailed monitoring data were available. The predicted heating load and fuel usage were compared to the actual heating load and fuel usage for the period. STEM/PSTAR predictions of heating load fuel usage agreed quite well with the measured data. The predicted heating load using the STEM/PSTAR methodology was within 1 percent of the measured heating load. STEM/PSTAR tended to overpredict fuel usage by about 10 percent. Potential applications of the method include the evaluation of demand-site management technologies, new home energy performance evaluation and heating system performance evaluation.

1992-02-01T23:59:59.000Z

169

Freeway Short-Term Traffic Flow Forecasting by Considering Traffic Volatility Dynamics and Missing Data Situations  

E-Print Network (OSTI)

Short-term traffic flow forecasting is a critical function in advanced traffic management systems (ATMS) and advanced traveler information systems (ATIS). Accurate forecasting results are useful to indicate future traffic conditions and assist traffic managers in seeking solutions to congestion problems on urban freeways and surface streets. There is new research interest in short-term traffic flow forecasting due to recent developments in ITS technologies. Previous research involves technologies in multiple areas, and a significant number of forecasting methods exist in literature. However, forecasting reliability is not properly addressed in existing studies. Most forecasting methods only focus on the expected value of traffic flow, assuming constant variance when perform forecasting. This method does not consider the volatility nature of traffic flow data. This paper demonstrated that the variance part of traffic flow data is not constant, and dependency exists. A volatility model studies the dependency among the variance part of traffic flow data and provides a prediction range to indicate the reliability of traffic flow forecasting. We proposed an ARIMA-GARCH (Autoregressive Integrated Moving Average- AutoRegressive Conditional Heteroskedasticity) model to study the volatile nature of traffic flow data. Another problem of existing studies is that most methods have limited forecasting abilities when there is missing data in historical or current traffic flow data. We developed a General Regression Neural Network(GRNN) based multivariate forecasting method to deal with this issue. This method uses upstream information to predict traffic flow at the studied site. The study results indicate that the ARIMA-GARCH model outperforms other methods in non-missing data situations, while the GRNN model performs better in missing data situations.

Zhang, Yanru

2011-08-01T23:59:59.000Z

170

Short-Term Energy Outlook - U.S. Energy Information Administration ...  

U.S. Energy Information Administration (EIA)

Market Prices and Uncertainty Report. This is a regular monthly supplement to the EIA Short-Term Energy Outlook. Contact: James Preciado (James.Preciado@eia.gov) Full ...

171

Short-Term Energy Outlook (STEO) - U.S. Energy Information ...  

U.S. Energy Information Administration (EIA)

U.S. Energy Information Administration | Short?Term Energy Outlook February 2013 5 modestly in this forecast, increasing by 50,000 bbl/d (0 ...

172

Short-Term Energy Outlook (STEO) - U.S. Energy Information ...  

U.S. Energy Information Administration (EIA)

U.S. Energy Information Administration | Short?Term Energy Outlook January 2013 5 Forecast motor gasoline consumption in 2013 and 2014 ...

173

Short-Term Energy Outlook - U.S. Energy Information Administration ...  

U.S. Energy Information Administration (EIA)

Energy use in homes, commercial buildings, manufacturing, and transportation. ... Oxygenate Supply/Demand Balances in the Short-Term Integrated Forecasting Model:

174

Implications of Wide-Area Geographic Diversity for Short- Term Variability of Solar Power  

E-Print Network (OSTI)

due to wind and solar power. Environmental Science &Integration of Concentrating Solar Power and Utility-ScaleShort- Term Variability of Solar Power Andrew Mills and Ryan

Mills, Andrew

2010-01-01T23:59:59.000Z

175

Short-Term Energy Outlook November 2004 - U.S. Energy Information ...  

U.S. Energy Information Administration (EIA)

Short-Term Integrated Forecasting System and by EIA’s office of Coal, Nuclear, Electric and Alternate Fuels (hydroelectric and nuclear).

176

DOE/EIA-0202(85/4Q) Short-Term Washington, D C Energy Information ...  

U.S. Energy Information Administration (EIA)

forecasting system, analyzes previous forecast errors, and provides detailed analyses of current issues that affect EIA's short-term energy forecasts.

177

DOE/EIA-0202(85/2Q) Short-Term Washington, D C Energy Information ...  

U.S. Energy Information Administration (EIA)

Annual Energy Outlook, 1984 Published January 1985 The Short-Term Energy Outlook provides forecasts of the energy situation for 1985 and the first half of 1986.

178

DOE/EIA-0202(84/2QH Short-Term Energy Information Administration ...  

U.S. Energy Information Administration (EIA)

DOE/EIA-0202(84/2QH Short-Term Energy Outlook Quarterly Projections May 1984 Published: June 1984 Energy Information Administration Washington, D.C.

179

Multi-Microgrids Reliability and Islanding Operation Enhancement, under Different Dispatchable-Renewable DG Units Penetration Levels.  

E-Print Network (OSTI)

??Electrical reliability assurance is a very important aspect of electrical power systems; significant consideration should be given to reliability at both the planning and operation… (more)

Essam Abdelkhalek Abdelaty, Mohammed

2012-01-01T23:59:59.000Z

180

Development of Short-Term Transmission Line Capacity Forecasting Methodology  

Science Conference Proceedings (OSTI)

A sophisticated and inclusive predictive tool to give utilities the capability of dynamic line rating currently does not exist. The scope of this project is to develop a reliable predictive system that integrates innovative numerical modeling with real-time and historical meteorological data. The modeling scheme used in this phase of the project involved making predictions for times in the past, also known as hindcasts, then comparing those results with the historical record. Future implementations of th...

2008-06-30T23:59:59.000Z

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Implications of Wide-Area Geographic Diversity for Short- Term Variability of Solar Power  

SciTech Connect

Worldwide interest in the deployment of photovoltaic generation (PV) is rapidly increasing. Operating experience with large PV plants, however, demonstrates that large, rapid changes in the output of PV plants are possible. Early studies of PV grid impacts suggested that short-term variability could be a potential limiting factor in deploying PV. Many of these early studies, however, lacked high-quality data from multiple sites to assess the costs and impacts of increasing PV penetration. As is well known for wind, accounting for the potential for geographic diversity can significantly reduce the magnitude of extreme changes in aggregated PV output, the resources required to accommodate that variability, and the potential costs of managing variability. We use measured 1-min solar insolation for 23 time-synchronized sites in the Southern Great Plains network of the Atmospheric Radiation Measurement program and wind speed data from 10 sites in the same network to characterize the variability of PV with different degrees of geographic diversity and to compare the variability of PV to the variability of similarly sited wind. The relative aggregate variability of PV plants sited in a dense 10 x 10 array with 20 km spacing is six times less than the variability of a single site for variability on time scales less than 15-min. We find in our analysis of wind and PV plants similarly sited in a 5 x 5 grid with 50 km spacing that the variability of PV is only slightly more than the variability of wind on time scales of 5-15 min. Over shorter and longer time scales the level of variability is nearly identical. Finally, we use a simple approximation method to estimate the cost of carrying additional reserves to manage sub-hourly variability. We conclude that the costs of managing the short-term variability of PV are dramatically reduced by geographic diversity and are not substantially different from the costs for managing the short-term variability of similarly sited wind in this region.

Mills, Andrew; Wiser, Ryan

2010-08-23T23:59:59.000Z

182

Research of Operation Reliability and Power Quality for Four Sets of Main Transformer Substations  

Science Conference Proceedings (OSTI)

The problems of the operation performance, reliability and power quality for four main transformer substations are discussed in this paper. Because of the increasing of power load and the short supply of land resources, the method provided has the necessity ... Keywords: Local grid, transformer, economy, reliability, power quality

Xilin Zhang, Bin Zhang, Guannan Wang, Chengmin Wang

2012-07-01T23:59:59.000Z

183

Short-term load forecasting using lifting scheme and ARIMA models  

Science Conference Proceedings (OSTI)

Short-term load forecasting is achieved using a lifting scheme and autoregressive integrated moving average (ARIMA) models. The lifting scheme is a general and flexible approach for constructing bi-orthogonal wavelets that are usually in the spatial ... Keywords: Autoregressive integrated moving average model, Back propagation network, Lifting scheme, Multi-revolution analysis, Short-term load forecasting, Wavelet transform

Cheng-Ming Lee; Chia-Nan Ko

2011-05-01T23:59:59.000Z

184

Treasurer's Annual Report, University of California, 2007-2008 Short Term Investment Pool (STIP)  

E-Print Network (OSTI)

Treasurer's Annual Report, University of California, 2007-2008 Short Term Investment Pool (STIP) Treasurer's Annual Report, University of California, 2007-2008 The Short Term Investment Pool (STIP of the University are the major funds invested in STIP until expended. Pension, endowment, and defined contribution

Russell, Lynn

185

The WGNE Assessment of Short-term Quantitative Precipitation Forecasts  

Science Conference Proceedings (OSTI)

Twenty-four-hour and 48-h quantitative precipitation forecasts (QPFs) from 11 operational numerical weather prediction models have been verified for a 4-yr period against rain gauge observations over the United States, Germany, and Australia to ...

Elizabeth E. Ebert; Ulrich Damrath; Werner Wergen; Michael E. Baldwin

2003-04-01T23:59:59.000Z

186

Analysis of the Performance Benefits of Short-Term Energy Storage in Wind-Diesel Hybrid Power Systems  

Science Conference Proceedings (OSTI)

A variety of prototype high penetration wind-diesel hybrid power systems have been implemented with different amounts of energy storage. They range from systems with no energy storage to those with many hours worth of energy storage. There has been little consensus among wind-diesel system developers as to the appropriate role and amount of energy storage in such systems. Some researchers advocate providing only enough storage capacity to supply power during the time it takes the diesel genset to start. Others install large battery banks to allow the diesel(s) to operate at full load and/or to time-shift the availability of wind-generated electricity to match the demand. Prior studies indicate that for high penetration wind-diesel systems, short-term energy storage provides the largest operational and economic benefit. This study uses data collected in Deering, Alaska, a small diesel-powered village, and the hybrid systems modeling software Hybrid2 to determine the optimum amount of short-term storage for a particular high penetration wind-diesel system. These findings were then generalized by determining how wind penetration, turbulence intensity, and load variability affect the value of short term energy storage as measured in terms of fuel savings, total diesel run time, and the number of diesel starts.

Shirazi, M.; Drouilhet, S.

1997-04-01T23:59:59.000Z

187

PV Reliability Operations and Maintenance (PVROM) Database Initiative: 2013 Project Report  

Science Conference Proceedings (OSTI)

To fill a major knowledge gap, EPRI and Sandia National Laboratories are jointly engaged in a multi-year research effort to examine photovoltaic (PV) plant reliability performance obtained through documented field data. Findings and analyses, derived from the PV Reliability Operations Maintenance (PVROM) database, are intended to inform industry best practices around the optimal operations and maintenance (O&M) of solar assets.Currently being populated with initial PV plant ...

2013-12-23T23:59:59.000Z

188

Short-Term Wind Generation Forecasting Using Artificial Neural Networks  

Science Conference Proceedings (OSTI)

Wind power is a highly intermittent power output resource that cannot be bid competitively in a traditional market due to scheduling problems associated with the resource. The California Independent System Operator (CAISO) has proposed a unique market arrangement that makes such bidding possible. The central part of the arrangement is a provision that deviations between metered and scheduled energy for participating intermittent renewable resources will be averaged across a calendar month, and paid or ch...

2003-10-27T23:59:59.000Z

189

Independent transmission system operators and their role in maintaining reliability in a restructured electric power industry  

Science Conference Proceedings (OSTI)

This report summarizes the current status of proposals to form Independent System Operators (ISOs) to operate high-voltage transmission systems in the United States and reviews their potential role in maintaining bulk power system reliability. As background information, the likely new industry structure, nature of deregulated markets, and institutional framework for bulk power system reliability are reviewed. The report identifies issues related to the formation of ISOs and their roles in markets and in reliability, and describes potential policy directions for encouraging the formation of effective ISOs and ensuring bulk system reliability. Two appendices are provided, which address: (1) system operation arrangements in other countries, and (2) summaries of regional U.S. ISO proposals.

NONE

1998-01-01T23:59:59.000Z

190

STEMS Demo Software, Version 1.5: Short-Term Electricity Market Simulator Demo  

Science Conference Proceedings (OSTI)

The Short-Term Electricity Market Simulator (STEMS) Demo software version 1.5 allows the user to study the realistic behavior of a short-term electricity market using a detailed model of the power system and realistic bidding and market clearing mechanisms to emulate the behavior of various market designs, including the FERC Standard Market Design and the California MD02 design. The STEMS Demo software version 1.5 allows the user to study a short-term electricity market. It combines the functionality of ...

2003-12-23T23:59:59.000Z

191

ACL Reconstruction with Autologous Hamstring Tendon: Comparison of Short Term Clinical Results  

E-Print Network (OSTI)

Purpose: To compare the short term clinical results of anterior cruciate ligament (ACL) reconstruction with autologous hamstring tendon between Rigid-fix and PINN-ACL Cross Pin for femoral side fixation. Materials and Methods: 127 patients who underwent arthroscopic ACL reconstruction using autologous hamstring tendon and had been followedup for over than one year were enrolled for the present study. Rigid-fix was used in 71 cases (group 1), and PINN-ACL Cross Pin was used in 56 cases (group 2). Clinical and radiological results, operation time, and perioperative complications were compared amongst the two groups. Results: The International Knee Documentation Committee subjective score and Lysholm score were 94 and 95 in group 1 and 87 and 91 in group 2, with no statistical difference (p=0.892, p=0.833), respectively. However, significant difference was observed in one-leg hop test between the two groups (p=0.032). Five cases in group 1 and 40 cases in group 2 were found to be associated with perioperative complications with statistical difference (p<0.0001). Conclusions: There was no resultant difference between the employment of PINN-ACL Cross Pin and Rigid-fix as femoral graft fixation for ACL reconstruction with hamstring tendon. However, PINN-ACL Cross Pin led to complications with extensive operation times. Hence, it needs further improvement of tools for minimization of complications. Key words: Anterior cruciate ligament reconstruction, Hamstring tendon, Rigid-fix, PINN-ACL Cross Pin.

Knee Surg; Relat Res; Between Rigid-fix; Pinn-acl Cross Pin

2011-01-01T23:59:59.000Z

192

Microsoft PowerPoint - Arseneau_EIA_ShortTermDriversofEnergyPrices.ppt [Compatibility Mode]  

U.S. Energy Information Administration (EIA) Indexed Site

SHORT-TERM ENERGY PRICES: SHORT-TERM ENERGY PRICES: WHAT DRIVERS MATTER MOST? DAVID M. ARSENEAU FEDERAL RESERVE BOARD U.S. Energy Information Administration & Johns Hopkins University - SAIS FEDERAL RESERVE BOARD Johns Hopkins University SAIS 2010 Energy Conference Washington, D.C., U.S.A. A il 6 2010 April 6, 2010 BROAD COMMODITY PRICES SINCE 2000 Short-term Energy Prices: What Drivers Matters Most? BROAD COMMODITY PRICES SINCE 2000 April 6, 2010 Seminar: 2010 EIA/SAIS Energy Conference 2 A (GROSSLY OVERSIMPLIFIED) FRAMEWORK Short-term Energy Prices: What Drivers Matters Most? A (GROSSLY OVERSIMPLIFIED) FRAMEWORK ...  Two candidate explanations:  "Fundamentals"  Fundamentals  Trend price movements appear broadly interpretable through lens of fundamental market developments...

193

Linear Statistical Short-Term Climate Predictive Skill in the Northern Hemisphere  

Science Conference Proceedings (OSTI)

In this study, the sources and strengths of statistical short-term climate predictability for local surface climate (temperature and precipitation) and 700-mb geopotential height in the Northern Hemisphere are explored at all times of the year at ...

Anthony G. Barnston

1994-10-01T23:59:59.000Z

194

An Automated, Observations-Based System for Short-Term Prediction of Ceiling and Visibility  

Science Conference Proceedings (OSTI)

Several methods of generating very short term (0–6 h) probabilistic forecasts of ceiling and visibility are investigated: 1) an observations-based (OBS-based) system in which potential predictors consist of weather observations from a network of ...

Robert L. Vislocky; J. Michael Fritsch

1997-03-01T23:59:59.000Z

195

Short-Term Energy Outlook Model Documentation: Motor Gasoline Consumption Model  

Reports and Publications (EIA)

The motor gasoline consumption module of the Short-Term Energy Outlook (STEO) model is designed to provide forecasts of total U.S. consumption of motor gasolien based on estimates of vehicle miles traveled and average vehicle fuel economy.

Tancred Lidderdale

2011-11-30T23:59:59.000Z

196

Mechanisms of Short-Term Sea Surface Temperature Regulation: Observations during TOGA COARE  

Science Conference Proceedings (OSTI)

Analyses of ocean–atmosphere data from Tropical Oceans Global Atmosphere Coupled Ocean–Atmosphere Response Experiment indicate that short-term (weekly to monthly) fluctuations of SST in the western Pacific warm pool are closely linked to the ...

K-M. Lau; C-H. Sui

1997-03-01T23:59:59.000Z

197

Improving QPE and Very Short Term QPF: An Initiative for a Community-Wide Integrated Approach  

Science Conference Proceedings (OSTI)

Accurate quantitative precipitation estimates (QPE) and very short term quantitative precipitation forecasts (VSTQPF) are critical to accurate monitoring and prediction of water-related hazards and water resources. While tremendous progress has ...

Steven V. Vasiloff; Kenneth W. Howard; Robert M. Rabin; Harold E. Brooks; Dong-Jun Seo; Jian Zhang; David H. Kitzmiller; Mary G. Mullusky; Witold F. Krajewski; Edward A. Brandes; Barbara G. Brown; Daniel S. Berkowitz; John A. McGinley; Robert J. Kuligowski

2007-12-01T23:59:59.000Z

198

EIA Short-Term Energy and Winter Fuels OutlookWinter Fuels Outlook  

U.S. Energy Information Administration (EIA)

heating oil electricity South U.S. total wood kerosene/other/no heating 116 million homes 4 Short-Term Energy and Winter Fuels Outlook October 8, 2013

199

A Minimal Model for the Short-Term Prediction of Rainfall in the Tropics  

Science Conference Proceedings (OSTI)

A “minimal” model is proposed here for the short-term prediction (up to 12 h ahead) of precipitation occurrence in the tropics. The model is purely statistical, consisting of an optimally weighted linear combination of a Markov chain and ...

K. Fraedrich; L. M. Leslie

1988-09-01T23:59:59.000Z

200

GRR/Section 6-MT-f - Short-term Water Quality Standard for Turbidity...  

Open Energy Info (EERE)

GRRSection 6-MT-f - Short-term Water Quality Standard for Turbidity (318 Authorization) < GRR Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home...

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Short-Term Energy Outlook Model Documentation: Regional Residential Heating Oil Price Model  

Reports and Publications (EIA)

The regional residential heating oil price module of the Short-Term Energy Outlook (STEO) model is designed to provide residential retail price forecasts for the 4 census regions: Northeast, South, Midwest, and West.

Information Center

2009-11-09T23:59:59.000Z

202

Short-Term Energy Outlook Model Documentation: Regional Residential Propane Price Model  

Reports and Publications (EIA)

The regional residential propane price module of the Short-Term Energy Outlook (STEO) model is designed to provide residential retail price forecasts for the 4 census regions: Northeast, South, Midwest, and West.

Information Center

2009-11-09T23:59:59.000Z

203

Short-Term Energy Outlook - U.S. Energy Information Administration ...  

U.S. Energy Information Administration (EIA)

Short-Term Energy Outlook ... Search EIA.gov. A-Z Index; ... but EIA expects that several large solar thermal generation projects will enter service in 2013 and 2014.

204

286 IEEE TRANSACTIONS ON SMART GRID, VOL. 1, NO. 3, DECEMBER 2010 Short-Term Load Forecast of Microgrids by a New  

E-Print Network (OSTI)

of Microgrids by a New Bilevel Prediction Strategy Nima Amjady, Senior Member, IEEE, Farshid Keynia, Member, IEEE, and Hamidreza Zareipour, Senior Member, IEEE Abstract--Microgrids are a rapidly growing sector. In the operation of a microgrid, forecasting the short-term load is an important task. With a more accurate short

205

Model documentation of the Short-Term Coal Analysis System. Volume 2. Model description. [SCOAL  

Science Conference Proceedings (OSTI)

This is the second of three volumes of documentation for the Short-Term Coal Analysis System (SCOAL) developed by the Coal Data Analysis and Forecasting Branch, Office of Coal, Nuclear, Electric, and Alternate Fuels. The principal aim of SCOAL is to project on a quarterly basis the likely contribution of each of the 26 major bituminous coal, lignite, and anthracite producing states to total US production. A secondary objective is to estimate a companion demand-side aggregated by region but disaggregated by end-use sector. In its current use, the two sides are operated in tandem, and serve to cross-validate each other by means of tracking market balances. The purposes of this report are to describe the estimation method, results, and performance evaluation criteria that were deemed relevant in assessing the potential predictive performance of SCOAL's statistically fitted relationships and to discuss the pre- and post-estimation considerations that prevailed over the course of mode development. The single equation parameter estimates, associated significance levels, statistical equation performance measures, and general comments regarding SCOAL's supply and demand side equations are presented.

Not Available

1983-04-01T23:59:59.000Z

206

Use of Frequency Response Metrics to Assess the Planning and Operating Requirements for Reliable Integration of Variable Renewable Generation  

E-Print Network (OSTI)

control because the industry assumed that power system operationsPower system operations planners conduct extensive studies to assess whether primary frequency controlcontrol is a fundamental requirement for reliable operation of any power system.

Eto, Joseph H.

2011-01-01T23:59:59.000Z

207

Integration of renewable energy sources: reliability-constrained power system planning and operations using computational intelligence  

E-Print Network (OSTI)

Renewable sources of energy such as wind turbine generators and solar panels have attracted much attention because they are environmentally friendly, do not consume fossil fuels, and can enhance a nation’s energy security. As a result, recently more significant amounts of renewable energy are being integrated into conventional power grids. The research reported in this dissertation primarily investigates the reliability-constrained planning and operations of electric power systems including renewable sources of energy by accounting for uncertainty. The major sources of uncertainty in these systems include equipment failures and stochastic variations in time-dependent power sources. Different energy sources have different characteristics in terms of cost, power dispatchability, and environmental impact. For instance, the intermittency of some renewable energy sources may compromise the system reliability when they are integrated into the traditional power grids. Thus, multiple issues should be considered in grid interconnection, including system cost, reliability, and pollutant emissions. Furthermore, due to the high complexity and high nonlinearity of such non-traditional power systems with multiple energy sources, computational intelligence based optimization methods are used to resolve several important and challenging problems in their operations and planning. Meanwhile, probabilistic methods are used for reliability evaluation in these reliability-constrained planning and design. The major problems studied in the dissertation include reliability evaluation of power systems with time-dependent energy sources, multi-objective design of hybrid generation systems, risk and cost tradeoff in economic dispatch with wind power penetration, optimal placement of distributed generators and protective devices in power distribution systems, and reliability-based estimation of wind power capacity credit. These case studies have demonstrated the viability and effectiveness of computational intelligence based methods in dealing with a set of important problems in this research arena.

Wang, Lingfeng

2008-12-01T23:59:59.000Z

208

Development of multi-platform control and instrumentation communications to increase operational reliability - application to MAST  

E-Print Network (OSTI)

Improving the reliability and reducing the maintenance time to give increased availability is a key feature of developing control & instrumentation (C&I) systems relevant to future fusion devices such as DEMO and to fusion power plants. Standardising access to the multiple platforms comprising C&I systems on working plant including software that analyses data is one aspect of achieving this. This has been realised on the MAST Neutral Beam Injection system (MNBI) following an extensive upgrade to the C&I, to improve the operational reliability of the neutral beam plant.

Homfray, D A; Khilar, S; King, R; Payne, D; Simmonds, M R; Tame, C; Whitehead, B

2013-01-01T23:59:59.000Z

209

Short-Term Carbon Dioxide Exchange and Environmental Factors in a Boreal Fen  

E-Print Network (OSTI)

Introduction Northern peatlands are important contributors to the global carbon cycle. In cold and moist climatic conditions, boreal peatlands have sequestered large amounts of atmospheric carbon during the past few thousand years (GORHAM 1991). The carbon balance in mires depends on the rates of photosynthesis and respiration which are affected by both the long-term and the short-term variations in environmental factors. So far, more emphasis has been put on the annual carbon balance of mires, and short-term dynamics have received less attention. However, a relationship between the carbon dioxide and methane cycling has been proposed as newly photosynthesized carbon provides substrates for methanogenesis substrates and promotes methane emissions (WHITING & CHANTON 1993). To analyze the connection between green plant photosynthesis and methane emissions, we need to analyze the short-term dynamics of carbon dioxide exchange. Consequently, we use earlier data (ALM et al. 1997) to study

Anu Kettunen

2000-01-01T23:59:59.000Z

210

GRR/Section 6-MT-f - Short-term Water Quality Standard for Turbidity (318  

Open Energy Info (EERE)

GRR/Section 6-MT-f - Short-term Water Quality Standard for Turbidity (318 GRR/Section 6-MT-f - Short-term Water Quality Standard for Turbidity (318 Authorization) < GRR Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home Roadmap Help List of Sections Section 6-MT-f - Short-term Water Quality Standard for Turbidity (318 Authorization) 06MTFShortTermWaterQualityStandardForTurbidity318Authorization.pdf Click to View Fullscreen Contact Agencies Montana Department of Natural Resources & Conservation Montana Department of Environmental Quality Montana Fish, Wildlife & Parks Regulations & Policies MCA 75-5-318 Triggers None specified Click "Edit With Form" above to add content 06MTFShortTermWaterQualityStandardForTurbidity318Authorization.pdf Error creating thumbnail: Page number not in range.

211

ANN-Based Short-Term Load Forecasting in Electricity Markets  

E-Print Network (OSTI)

Abstract—This paper proposes an Artificial Neural Network (ANN)-based short-term load forecasting technique that considers electricity price as one of the main characteristics of the system load, demonstrating the importance of considering pricing when predicting loading in today’s electricity markets. Historical load data from the Ontario Hydro system as well as pricing information from the neighboring system are used for testing, showing the good performance of the proposed method. Keywords: Short-term load forecasting, electricity markets, spot prices, Artificial Neural Networks (ANN)

Hong Chen; Claudio A. Cañizares; Ajit Singh

2001-01-01T23:59:59.000Z

212

Short-term effects of Gamma Ray Bursts on oceanic photosynthesis  

E-Print Network (OSTI)

We continue our previous work on the potential short-term influence of a gamma ray bursts on Earth's biosphere, focusing on the only important short-term effect on life: the ultraviolet flash which occurs as a result of the retransmission of the {\\gamma} radiation through the atmosphere. Thus, in this work we calculate the ultraviolet irradiances penetrating the first hundred meters of the water column, for Jerlov's ocean water types I, II and III. Then we estimate the UV flash potential for photosynthesis inhibition, showing that it can be important in a considerable part of the water column with light enough for photosynthesis to be done, the so called photic zone.

Penate, Liuba; Cardenas, Rolando; Agusti, Susana

2010-01-01T23:59:59.000Z

213

Wind turbine reliability :understanding and minimizing wind turbine operation and maintenance costs.  

DOE Green Energy (OSTI)

Wind turbine system reliability is a critical factor in the success of a wind energy project. Poor reliability directly affects both the project's revenue stream through increased operation and maintenance (O&M) costs and reduced availability to generate power due to turbine downtime. Indirectly, the acceptance of wind-generated power by the financial and developer communities as a viable enterprise is influenced by the risk associated with the capital equipment reliability; increased risk, or at least the perception of increased risk, is generally accompanied by increased financing fees or interest rates. This paper outlines the issues relevant to wind turbine reliability for wind turbine power generation projects. The first sections describe the current state of the industry, identify the cost elements associated with wind farm O&M and availability and discuss the causes of uncertainty in estimating wind turbine component reliability. The latter sections discuss the means for reducing O&M costs and propose O&M related research and development efforts that could be pursued by the wind energy research community to reduce cost of energy.

Walford, Christopher A. (Global Energy Concepts. Kirkland, WA)

2006-03-01T23:59:59.000Z

214

Wind turbine reliability :understanding and minimizing wind turbine operation and maintenance costs.  

SciTech Connect

Wind turbine system reliability is a critical factor in the success of a wind energy project. Poor reliability directly affects both the project's revenue stream through increased operation and maintenance (O&M) costs and reduced availability to generate power due to turbine downtime. Indirectly, the acceptance of wind-generated power by the financial and developer communities as a viable enterprise is influenced by the risk associated with the capital equipment reliability; increased risk, or at least the perception of increased risk, is generally accompanied by increased financing fees or interest rates. This paper outlines the issues relevant to wind turbine reliability for wind turbine power generation projects. The first sections describe the current state of the industry, identify the cost elements associated with wind farm O&M and availability and discuss the causes of uncertainty in estimating wind turbine component reliability. The latter sections discuss the means for reducing O&M costs and propose O&M related research and development efforts that could be pursued by the wind energy research community to reduce cost of energy.

Walford, Christopher A. (Global Energy Concepts. Kirkland, WA)

2006-03-01T23:59:59.000Z

215

State-Of-the-Art Boiler Design for High Reliability Under Cycling Operation  

Science Conference Proceedings (OSTI)

To remain competitive in today's market, utilities must meet multiple, sometimes conflicting, objectives. Plants must achieve cost reduction and increased revenue while working within reliability, safety, and emission constraints. Key in the competitive deregulated market is being able to meet consumer electricity demand when it is needed. Because electricity cannot be stored, power plants must operate in cycling mode in order to satisfy this on-demand requirement.

2004-12-22T23:59:59.000Z

216

Short-Term Supply Chain Management in Upstream Natural Gas Systems  

E-Print Network (OSTI)

Consumers LNG Tanker Fleet Regasification Terminals LNGStorage Storage (Long,medium,short-term) Inter. LNG tankers unload the liquid at LNG termi- nals (also called regasification terminals). LNG it to markets or supplied directly to bulk consumers. LNG regasification terminals may also have storage

Barton, Paul I.

217

Global Sensitivity Analysis for the Short-term Prediction of System Variables  

E-Print Network (OSTI)

into or withdrawal from the transmission grid. The short-term prediction of LMPs in these regions is important. It is next established analytically that there is a fixed linear-affine mapping between bus load patterns piecewise linear-affine mapping can be used to predict system patterns corresponding to forecasted load

Tesfatsion, Leigh

218

Short-Term Energy Outlook Model Documentation: Other Petroleum Products Consumption Model  

Reports and Publications (EIA)

The other petroleum product consumption module of the Short-Term Energy Outlook (STEO) model is designed to provide U.S. consumption forecasts for 6 petroleum product categories: asphalt and road oil, petrochemical feedstocks, petroleum coke, refinery still gas, unfinished oils, and other miscvellaneous products

Tancred Lidderdale

2011-11-30T23:59:59.000Z

219

Can Fully Accounting for Clouds in Data Assimilation Improve Short-Term Forecasts by Global Models?  

Science Conference Proceedings (OSTI)

This paper explores the degree to which short-term forecasts with global models might be improved if clouds were fully included in a data assimilation system, so that observations of clouds affected all parts of the model state and cloud ...

Robert Pincus; Robert J. Patrick Hofmann; Jeffrey L. Anderson; Kevin Raeder; Nancy Collins; Jeffrey S. Whitaker

2011-03-01T23:59:59.000Z

220

Nearest neighbor technique and artificial neural networks for short-term electric consumptions forecast  

Science Conference Proceedings (OSTI)

Promoting both energy savings and renewable energy development are two objectives of the actual and national French energy policy. In this sense, the present work takes part in a global development of various tools allowing managing energy demand. So, ... Keywords: Kohonen Self-Organizing Map, Multi-Layer Perceptron, Short-Term Electric Consumption, The Nearest Neighbor Technique, Virtual Power Plant

Van Giang Tran; Stéphane Grieu; Monique Polit

2008-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Changes in Natural Gas Monthly Consumption Data Collection and the Short-Term Energy Outlook  

Reports and Publications (EIA)

Beginning with the December 2010 issue of the Short-Term Energy Outlook (STEO), the EnergyInformation Administration (EIA) will present natural gas consumption forecasts for theresidential and commercial sectors that are consistent with recent changes to the Form EIA-857monthly natural gas survey.

Information Center

2010-12-01T23:59:59.000Z

222

Short-term wind power forecast based on cluster analysis and artificial neural networks  

Science Conference Proceedings (OSTI)

In this paper an architecture for an estimator of short-term wind farm power is proposed. The estimator is made up of a Linear Machine classifier and a set of k Multilayer Perceptrons, training each one for a specific subspace of the input space. ...

Javier Lorenzo; Juan Méndez; Modesto Castrillón; Daniel Hernández

2011-06-01T23:59:59.000Z

223

ANN-based Short-Term Load Forecasting in Electricity Markets  

E-Print Network (OSTI)

ANN-based Short-Term Load Forecasting in Electricity Markets Hong Chen Claudio A. Ca~nizares Ajit forecasting technique that considers electricity price as one of the main characteristics of the system load. B. Makram, "A Hybrid Wavelet- Kalman Filter Method for Load Forecasting," Electric Power Systems

Cañizares, Claudio A.

224

An Analysis of Short-Term Risk in Power System Pricing  

Science Conference Proceedings (OSTI)

The power system planning process will undergo changes as the electric utility industry transforms into a competitive market. This report presents a methodology that uses classical decision analysis, sampling theory, and load forecasting theory to evaluate short-term risk in power system planning.

1999-08-12T23:59:59.000Z

225

Short-term relationship of total electron content with geomagnetic activity in equatorial regions  

E-Print Network (OSTI)

Short-term relationship of total electron content with geomagnetic activity in equatorial regions X equatorial ionosphere and geomagnetic activity is examined. Hourly averages of the total electron content for equatorial geomagnetic activity, at three local times (0700­0800, 1200­1300, and 1600­1700 LT) from March

Qiyu, Sun

226

An intelligent ACO-SA approach for short term electricity load prediction  

Science Conference Proceedings (OSTI)

Intelligent solutions, based on artificial intelligence (AI) technologies, to solve complicated practical problems in various sectors are becoming more and more widespread nowadays. On the other hand, electrical load prediction is one of the important ... Keywords: ant colony optimization, artificial neural networks, intelligent prediction, short-term electricity load prediction, simulated annealing, time series modeling

Arash Ghanbari; Esmaeil Hadavandi; Salman Abbasian-Naghneh

2010-08-01T23:59:59.000Z

227

Status and evaluation of hybrid electric vehicle batteries for short term applications. Final report  

SciTech Connect

The objective of this task is to compile information regarding batteries which could be use for electric cars or hybrid vehicles in the short term. More specifically, this study applies lead-acid batteries and nickel-cadmium battery technologies which are more developed than the advanced batteries which are presently being investigated under USABC contracts and therefore more accessible in production efficiency and economies of scale. Moreover, the development of these batteries has advanced the state-of-the-art not only in terms of performance and energy density but also in cost reduction. The survey of lead-acid battery development took the biggest part of the effort, since they are considered more apt to be used in the short-term. Companies pursuing the advancement of lead-acid batteries were not necessarily the major automobile battery manufacturers. Innovation is found more in small or new companies. Other battery systems for short-term are discussed in the last part of this report. We will review the various technologies investigated, their status and prognosis for success in the short term.

Himy, A. [Westinghouse Electric Co., Pittsburgh, PA (United States). Machinery Technology Div.

1995-07-01T23:59:59.000Z

228

Scanning Doppler Lidar for Input into Short-Term Wind Power Forecasts  

Science Conference Proceedings (OSTI)

Scanning Doppler lidar is a promising technology for improvements in short-term wind power forecasts since it can scan close to the surface and produce wind profiles at a large distance upstream (15–30 km) if the atmosphere has sufficient aerosol ...

Rod Frehlich

2013-02-01T23:59:59.000Z

229

A survey of HVDC operating and maintenance practices and their impact on reliability and performance  

Science Conference Proceedings (OSTI)

A questionnaire about operating, maintenance, and spare parts practices and station performance was sent to all HVDC converter stations worldwide. This survey is sponsored by IEEE Working Groups 15.05.08, Economics and Operating Strategies, and I7, Reliability of HVDC Converter Stations. Responses from 38 stations are analyzed, and information bout the most popular practices is reported. One important conclusion is that energy contracts, ac system constraints, and dedicated generation frequency have strong influences on the operation and maintenance practices of HVDC stations. A search is made for correlations between the operating, maintenance, and spare parts practices, including spending, and the stations` performance and availability. No conclusions about the most cost-effective practices can be made. The results are compared with those of a study published in 1992 which covered a few of the same topics.

Cochrane, J.J.; Emerson, M.P. [New England Power Co., Ayer, MA (United States); Donahue, J.A. [New England Power Service Co., Westborough, MA (United States); Wolf, G. [Public Service of New Mexico, Albuquerque, NM (United States)

1996-01-01T23:59:59.000Z

230

Measuring Short-term Air Conditioner Demand Reductions for Operations and Settlement  

E-Print Network (OSTI)

2004. Working Group 2 Demand Response Program Evaluation –A. Barat, D. Watson. 2007. Demand Response Spinning Reserveand E. Parker (2009). Demand Response Spinning Reserve

Bode, Josh

2013-01-01T23:59:59.000Z

231

Measuring Short-term Air Conditioner Demand Reductions for Operations and Settlement  

E-Print Network (OSTI)

and Industrial Facilities to Dynamic Electricity Prices.and Industrial Facilities to Dynamic Electricity Prices.

Bode, Josh

2013-01-01T23:59:59.000Z

232

Measuring Short-term Air Conditioner Demand Reductions for Operations and Settlement  

E-Print Network (OSTI)

In other words, we had the answer key and could grade whichwere simulated, the answer key was available and we could

Bode, Josh

2013-01-01T23:59:59.000Z

233

Measuring Short-term Air Conditioner Demand Reductions for Operations and Settlement  

E-Print Network (OSTI)

017F.PDF KEMA, Inc. 2011. PJM Empirical Analysis of DemandMethods. Prepared for the PJM Markets Implementation~/media/markets-ops/dsr/pjm-analysis-of-dr-baseline-methods-

Bode, Josh

2013-01-01T23:59:59.000Z

234

Data Center Efficiency and IT Equipment Reliability at Wider Operating Temperature and Humidity Ranges  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

PAPER #50 PAPER #50 DATA CENTER EFFICIENCY AND IT EQUIPMENT RELIABILITY AT WIDER OPERATING TEMPERATURE AND HUMIDITY RANGES EDITOR: Steve Strutt, IBM CONTRIBUTORS: Chris Kelley, Cisco Harkeeret Singh, Thomson Reuters Vic Smith, Colt Technology Services The Green Grid Technical Committee PAGE 2 Executive Summary Extending the environmental operating parameters of a data center is one of the industry-accepted procedures for reducing overall energy consumption. Relaxing traditionally tight control over temperature and humidity should result in less power required to cool the data center. However, until recently, the impact of increased data center operating temperature on the information technology (IT) equipment installed in the data center has not been well understood. Historically, it has been widely presumed to be

235

Appendix D Short-Term Analysis of Refinery Costs and Supply  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Short-Term Analysis of Refinery Costs and Supply 9302 Appendix D Short-Term Analysis of Refinery Costs and Supply As a result of the new regulations issued by the U.S. Estimating Components of the Distillate Environmental Protection Agency (EPA) for ultra-low- Blend Pool sulfur diesel fuel (ULSD) the U.S. refining industry faces two major challenges: to meet the more stringent specifi- The initial step of the analysis was to analyze the poten- cations for diesel product, and to keep up with demand tial economics of producing ULSD for each refinery. by producing more diesel product from feedstocks of Using input and output data submitted to the Energy lower quality. Some refineries in the United States and Information Administration (E1A) by refiners, the cur-

236

Short-Term Energy Outlook - U.S. Energy Information Administration (EIA)  

NLE Websites -- All DOE Office Websites (Extended Search)

‹ Analysis & Projections ‹ Analysis & Projections Short-Term Energy Outlook Release Date: January 7, 2014 | Next Release Date: February 11, 2014 | Full Report | Text Only | All Tables | All Figures Glossary › FAQS › Overview STEO Report Highlights Prices Global Crude Oil and Liquid Fuels U.S. Crude Oil and Liquid Fuels Natural Gas Coal Electricity Renewables and CO2 Emissions U.S. Economic Assumptions Data Figures Tables Custom Table Builder Real Prices Viewer Forecast Changes (PDF) Special Analysis Price Uncertainty Highlights This edition of the Short-Term Energy Outlook is the first to include forecasts for 2015. After falling to the lowest monthly average of 2013 in November, U.S. regular gasoline retail prices increased slightly to reach an average of $3.28 per gallon (gal) during December. The annual average regular

237

Short-Term Energy Outlook - U.S. Energy Information Administration (EIA)  

Gasoline and Diesel Fuel Update (EIA)

Short-Term Energy Outlook Short-Term Energy Outlook Release Date: January 7, 2014 | Next Release Date: February 11, 2014 | Full Report | Text Only | All Tables | All Figures Glossary › FAQS › Overview STEO Report Highlights Prices Global Crude Oil and Liquid Fuels U.S. Crude Oil and Liquid Fuels Natural Gas Coal Electricity Renewables and CO2 Emissions U.S. Economic Assumptions Data Figures Tables Custom Table Builder Real Prices Viewer Forecast Changes (PDF) Special Analysis Price Uncertainty < Back to list of tables Working correctly. Table 1 : U.S. Energy Markets Summary Either scripts and active content are not permitted to run or Adobe Flash Player version ${version_major}.${version_minor}.${version_revision} or greater is not installed. Get Adobe Flash Player a Includes lease condensate.

238

Session 4: "Short-Term Energy Prices - What Drivers Matter Most?"  

U.S. Energy Information Administration (EIA) Indexed Site

4: "Short-Term Energy Prices - What Drivers Matter Most?" 4: "Short-Term Energy Prices - What Drivers Matter Most?" Speakers: Howard K. Gruenspecht, EIA David M. Arseneau, Federal Reserve Board Guy F. Caruso, Center for Strategic and International Studies Christopher Ellsworth, Federal Energy Regulatory Commission Edward L. Morse, Credit Suisse Securities [Note: Recorders did not pick up introduction of panel (see biographies for details on the panelists) or introduction of session.] Howard: And this presentation could not be more timely, given current developments in oil and natural gas markets and the start of the traditional summer driving season. In discussions of rapidly rising oil prices leading to a peak of $147 per barrel in the summer of 2008, the factors that were traditionally the focus of EIA's

239

Actinide partitioning-transmutation program final report. VI. Short-term risk analysis of reprocessing, refabrication, and transportation: summary  

SciTech Connect

A Partitioning-Transmutation (PT) fuel cycle is being compared to a Reference cycle employing conventional fuel-material recovery methods. The PT cycle uses enhanced recovery methods so that most of the long-lived actinides are recycled to nuclear power plants and transmuted thereby reducing the waste toxicity. This report compares the two fuel cycles on the basis of the short-term radiological and nonradiological risks. The accidental radiological risk to the public is analyzed by estimating the probabilities of sets of accidents; the consequences are calculated using the risk, which is RAC code. Routine radiological risks to the public are estimated from the calculated release amounts, also using the CRAC code. Radiological occupational risks are determined from prior experience, projected standards, and estimates of accident risk. Nonradiological risks are calculated from the number of personnel involved, historical experience, and epidemiological studies. Result of this analysis is that the short-term risk of PT is 2.9 times greater than that of the Reference cycle, primarily due to the larger amount of industry. The nonradiological risk which is about 150 times greater than the radiological risk. If the radiological risk is consdered alone, the ratio of PT to Reference risk is 3, composed as follows: radiological operations affecting the public 5, radiological operations affecting the workers 1.7, and radiological accidents affecting the public 1.4, all in the order of decreasing risk. The absolute risk as estimated for the fuel cycle portions considered in this report is 0.91 fatality/GWe-year for the PT cycle and 0.34 fatality/GWe-year for the reference cycle; this compares with 1.5 for nuclear and 150 for coal. All of the risks assumed here are associated with the production of one billion watts of electricity (GWe) per year.

Fullwood, R.; Jackson, R.

1980-03-01T23:59:59.000Z

240

Short-term energy outlook. Quarterly projections, 2nd quarter 1994  

SciTech Connect

The Energy Information Administration (EIA) prepares quarterly, short-term energy supply, demand, and price projections for publication in February, May, August, and November in the Short-Term Energy Outlook (Outlook). An annual supplement analyzes the performance of previous forecasts, compares recent cases with those of other forecasting services, and discusses current topics related to the short-term energy markets. The forecast period for this issue of the Outlook extends from the second quarter of 1994 through the fourth quarter of 1995. Values for the first quarter of 1994, however, are preliminary EIA estimates (for example, some monthly values for petroleum supply and disposition are derived in part from weekly data reported in the Weekly Petroleum Status Report) or are calculated from model simulations using the latest exogenous information available. The historical energy data, compiled into the second quarter 1994 version of the Short-Term Integrated Forecasting System (STIFS) database, are mostly EIA data regularly published in the Monthly Energy Review, Petroleum Supply Monthly, and other EIA publications. Minor discrepancies between the data in these publications and the historical data in this Outlook are due to independent rounding. The STIFS database is archived quarterly and is available from the National Technical Information Service. The cases are produced using the STIFS. The STIFS model is driven principally by three sets of assumptions or inputs: estimates of key macroeconomic variables, world oil price assumptions, and assumptions about the severity of weather. Macroeconomic estimates are produced by DRI/McGraw-Hill but are adjusted by EIA to reflect EIA assumptions about the world price of crude oil, energy product prices, and other assumptions which may affect the macroeconomic outlook. The EIA model is available on computer tape from the National Technical Information Service.

Not Available

1994-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Short-Term Aging of Polymer Insulators: Dissection of Samples Aged in a Dry Environment  

Science Conference Proceedings (OSTI)

For many years, the Electric Power Research Institute (EPRI) has performed large-scale aging tests on polymer insulators and has evaluated many polymer insulators that have been removed from service, in an effort to understand what the aging factors are. EPRI has learned that a significant aging factor is corona discharge activity and has therefore developed a test that focuses on how corona discharge activity degrades polymer insulators. This report highlights the latest development of a short-term ...

2013-12-18T23:59:59.000Z

242

Short Term Aging of Polymer Insulators: Impact of High Humidity Environment  

Science Conference Proceedings (OSTI)

For many years, EPRI has performed large scale aging tests on polymer insulators and evaluated many polymer insulators removed from service in an effort to understand what the aging factors are. EPRI has learned that a significant aging factor is corona discharge activity and has developed a test that focuses on how corona discharge activity degrades polymer insulators. This report highlights the latest development of a short-term aging test designed to assess how well a polymer insulator can ...

2012-12-20T23:59:59.000Z

243

Biodiesel Supply and Consumption in the Short-Term Energy Outlook  

Reports and Publications (EIA)

The historical biodiesel consumption data published in the EIA Monthly Energy Review (http://www.eia.doe.gov/emeu/mer/contents.html) March 2009 edition were revised to account for imports and exports. Table 10.4 of the Monthly Energy Review was expanded to display biodiesel imports, exports, stocks, stock change, and consumption. Similar revisions were made in the April 2009 edition of the Short-Term Energy Outlook (STEO).

Information Center

2009-04-01T23:59:59.000Z

244

Dispersants for Tube Fouling Control: Volume 2: Short-Term Trial at ANO-2  

Science Conference Proceedings (OSTI)

Dispersants have been used for several decades in fossil boiler units to inhibit corrosion product deposition in the boiler. However, until recently, a dispersant of sufficient purity had not been available for nuclear application. This report summarizes the methodology and results of the full-scale, short-term trial of a high-purity, high molecular weight BetzDearborn polyacrylic acid (PAA) dispersant for steam generator deposit control in the secondary system of Arkansas Nuclear One Unit 2 (ANO-2).

2001-09-24T23:59:59.000Z

245

Turbine Reliability and Operability Optimization through the use of Direct Detection Lidar Final Technical Report  

SciTech Connect

The goal of this Department of Energy (DOE) project is to increase wind turbine efficiency and reliability with the use of a Light Detection and Ranging (LIDAR) system. The LIDAR provides wind speed and direction data that can be used to help mitigate the fatigue stress on the turbine blades and internal components caused by wind gusts, sub-optimal pointing and reactionary speed or RPM changes. This effort will have a significant impact on the operation and maintenance costs of turbines across the industry. During the course of the project, Michigan Aerospace Corporation (MAC) modified and tested a prototype direct detection wind LIDAR instrument; the resulting LIDAR design considered all aspects of wind turbine LIDAR operation from mounting, assembly, and environmental operating conditions to laser safety. Additionally, in co-operation with our partners, the National Renewable Energy Lab and the Colorado School of Mines, progress was made in LIDAR performance modeling as well as LIDAR feed forward control system modeling and simulation. The results of this investigation showed that using LIDAR measurements to change between baseline and extreme event controllers in a switching architecture can reduce damage equivalent loads on blades and tower, and produce higher mean power output due to fewer overspeed events. This DOE project has led to continued venture capital investment and engagement with leading turbine OEMs, wind farm developers, and wind farm owner/operators.

Johnson, David K; Lewis, Matthew J; ,; Pavlich, Jane C; Wright, Alan D; Johnson, Kathryn E; Pace, Andrew M

2013-02-01T23:59:59.000Z

246

Short-term Wind Power Prediction for Offshore Wind Farms -Evaluation of Fuzzy-Neural Network Based Models  

E-Print Network (OSTI)

Short-term Wind Power Prediction for Offshore Wind Farms - Evaluation of Fuzzy-Neural Network Based of wind power capacities are likely to take place offshore. As for onshore wind parks, short-term wind of offshore farms and their secure integration to the grid. Modeling the behavior of large wind farms

Paris-Sud XI, Université de

247

Short-Term Energy Outlook Model Documentation: Macro Bridge Procedure to Update Regional Macroeconomic Forecasts with National Macroeconomic Forecasts  

Reports and Publications (EIA)

The Regional Short-Term Energy Model (RSTEM) uses macroeconomic variables such as income, employment, industrial production and consumer prices at both the national and regional1 levels as explanatory variables in the generation of the Short-Term Energy Outlook (STEO). This documentation explains how national macroeconomic forecasts are used to update regional macroeconomic forecasts through the RSTEM Macro Bridge procedure.

Information Center

2010-06-01T23:59:59.000Z

248

322 IEEE TRANSACTIONS ON POWER SYSTEMS. VOL. 25. NO. I. FEBRUARY 2010 Short-Term Load Forecasting: Similar  

E-Print Network (OSTI)

for Short Term Electrical Load Forecasting," IEEE Trans. PWRS, vol. 11, no. 1, Feb. 1996, pp. 397-402. [4Short-Term Load Forecasting by Feed-Forward Neural Networks Saied S. Sharif1 , James H. Taylor2) is presented for the hourly load forecasting of the coming days. In this approach, 24 independent networks

Luh, Peter

249

Determining Long-Term Performance of Cool Storage Systems from Short-Term Tests, Final Report  

E-Print Network (OSTI)

This is the final report for ASHRAE Research Project 1004-RP: Determining Long-Term Performance of Cool Storage Systems from Short-Term Tests. This report presents the results of the development and application of the methodology to Case Study #2, the Delmar College, in Corpus Christi, Texas, and Case Study #3, the Austin Convention Center, in Austin, Texas. A previous report presented the analysis results for Case Study #1, which was a large hotel located in San Francisco, CA. This report also includes a summary and discussion of the results from all three case studies, recommendations for further research, and a step-by-step guide to applying the analysis methodology.

Reddy, T. A.; Elleson, J.; Haberl, J. S.

2000-01-01T23:59:59.000Z

250

Results of short-term corrosion evaluation tests at Raft River  

DOE Green Energy (OSTI)

Four categories of short-term materials evaluation tests were conducted in geothermal fluid from Raft River Geothermal Experiment, Well No. 1, to obtain corrosion data relevant to the design of the Raft River Thermal Loop Facility. Test programs are described and the testing philosophies are discussed. All materials and configurations which were tested are identified and details of posttest visual examinations are presented. The materials are then assigned to appropriate performance categories on the basis of test behavior, and the possible service limitations are appraised.

Miller, R.L.

1977-10-01T23:59:59.000Z

251

Implications of Wide-Area Geographic Diversity for Short- Term Variability of Solar Power  

E-Print Network (OSTI)

same level of reliability with and without PV. • Section 3the contribution of PV to long-term planning reliability or

Mills, Andrew

2010-01-01T23:59:59.000Z

252

Interpretation of a Short-Term Anomaly in the Gravitational Microlensing Event MOA-2012-BLG-486  

E-Print Network (OSTI)

A planetary microlensing signal is generally characterized by a short-term perturbation to the standard single lensing light curve. A subset of binary-source events can produce perturbations that mimic planetary signals, thereby introducing an ambiguity between the planetary and binary-source interpretations. In this paper, we present analysis of the microlensing event MOA-2012-BLG-486, for which the light curve exhibits a short-lived perturbation. Routine modeling not considering data taken in different passbands yields a best-fit planetary model that is slightly preferred over the best-fit binary-source model. However, when allowed for a change in the color during the perturbation, we find that the binary-source model yields a significantly better fit and thus the degeneracy is clearly resolved. This event not only signifies the importance of considering various interpretations of short-term anomalies, but also demonstrates the importance of multi-band data for checking the possibility of false-positive pla...

Hwang, K -H; Bond, I A; Sumi, T; Han, C; Gaudi, B S; Gould, A; Bozza, V; Beaulieu, J -P; Tsapras, Y; Abe, F; Bennett, D P; Botzler, C S; Chote, P; Freeman, M; Fukui, A; Fukunaga, D; Harris, P; Itow, Y; Koshimoto, N; Ling, C H; Masuda, K; Matsubara, Y; Muraki, Y; Namba, S; Ohnishi, K; Rattenbury, N J; Saito, To; Sullivan, D J; Sweatman, W L; Suzuki, D; Tristram, P J; Wada, K; Yamai, N; Yock, P C M; Yonehara, A; de Almeida, L Andrade; DePoy, D L; Dong, Subo; Jablonski, F; Jung, Y K; Kavka, A; Lee, C -U; Park, H; Pogge, R W; Shin, I -G; Yee, J C; Albrow, M D; Bachelet, E; Batista, V; Brillant, S; Caldwell, J A R; Cassan, A; Cole, A; Corrales, E; Coutures, Ch; Dieters, S; Prester, D Dominis; Donatowicz, J; Fouqué, P; Greenhill, J; Jørgensen, U G; Kane, S R; Kubas, D; Marquette, J -B; Martin, R; Meintjes, P; Menzies, J; Pollard, K R; Williams, A; Wouters, D; Bramich, D M; Dominik, M; Horne, K; Browne, P; Hundertmark, M; Ipatov, S; Kains, N; Snodgrass, C; Steele, I A; Street, R A

2013-01-01T23:59:59.000Z

253

(Short-term assays for detecting environmental mutagens, carcinogens, and teratogens)  

SciTech Connect

The traveler attended the Second Southeast Asian Workshop on Short-Term Assays for detecting Environmental Mutagens, Carcinogens, and Teratogens and presented a lecture on his work with transgenic mice. The work shop was sponsored by the Thai National Cancer Institute and was designed to acquaint scientists in Thailand and other Southeast Asian countries with the principles and state-of-the-art methods for detecting genotoxic agents. Many of the prominent scientists lecturing at the workshop, as well as several of the participants, expressed strong support for the short-term in vivo genotoxicity assays in transgenic mice that are currently under development in the traveler's laboratory in the Biology Division at ORNL. The traveler also participated in a panel discussion sponsored by the Thai Science and Technology Development Board (STDP) on the development of molecular biology programs at the universities in Thailand. After two weeks in Thailand, the traveler flew to the Philippines with several other American scientists to spend two days visiting the University of the Philippines, meeting with students and faculty, and presenting a lecture on his work with transgenic mice.

Woychik, R.P.

1989-03-08T23:59:59.000Z

254

Motor-operated valve reliability programs: Lessons learned to meet new NRC (Nuclear Regulatory Commission) requirements  

Science Conference Proceedings (OSTI)

In recent years, reliability problems have surfaced with power plant motor-operated valves (MOVs) that (a) fail to perform as designed, and/or (b) require excessive maintenance to perform their intended function. As a result, the US Nuclear Regulatory Commission (NRC) mandated certain testing and reporting requirements in inspection and enforcement bulletin 85-03 (85-03). The NRC's generic letter 89-10 (89-10) significantly expands these requirements, to include all safety-related and position-changeable MOVs. The MOV program experience at the Sacramento Municipal Utility District (SMUD) Rancho Seco plant is particularly valuable since the NRC, to a large extent, utilized this program as the prototype for 89-10's requirements. The MOV inspection, overhaul, and testing began in September 1986, with completion scheduled for December 1986. The paper discusses problems encountered, recovery plant, results of recovery planning, and lessons learned. Experience at Rancho Seco has shown that comprehensive valve programs incorporating appropriate design practices, preventive maintenance practices, and operational constraints can improve plant availability.

Anderson, M.W.; Fadel, D.P.; Fraser, P.J.

1990-06-01T23:59:59.000Z

255

Field Operations Program Chevrolet S-10 (Lead-Acid) Accelerated Reliability Testing - Final Report  

DOE Green Energy (OSTI)

This report summarizes the Accelerated Reliability testing of five lead-acid battery-equipped Chevrolet S-10 electric vehicles by the US Department of Energy's Field Operations Program and the Program's testing partners, Electric Transportation Applications (ETA) and Southern California Edison (SCE). ETA and SCE operated the S-10s with the goal of placing 25,000 miles on each vehicle within 1 year, providing an accelerated life-cycle analysis. The testing was performed according to established and published test procedures. The S-10s' average ranges were highest during summer months; changes in ambient temperature from night to day and from season-to-season impacted range by as much as 10 miles. Drivers also noted that excessive use of power during acceleration also had a dramatic effect on vehicle range. The spirited performance of the S-10s created a great temptation to inexperienced electric vehicle drivers to ''have a good time'' and to fully utilize the S-10's acceleration capability. The price of injudicious use of power is greatly reduced range and a long-term reduction in battery life. The range using full-power accelerations followed by rapid deceleration in city driving has been 20 miles or less.

J. Francfort (INEEL); J. Argueta; M. Wehrey (Southern California Edison); D. Karner; L. Tyree (Electric Transportation Applications)

1999-07-01T23:59:59.000Z

256

Renewable Resource Integration Project - Scoping Study of Strategic Transmission, Operations, and Reliability Issues  

Science Conference Proceedings (OSTI)

California is on a path to increase utilization of renewable resources. California will need to integrate approximately 30,000 megawatts (MW) of new renewable generation in the next 20 years. Renewable resources are typically located in remote locations, not near the load centers. Nearly two/thirds or 20,000 MW of new renewable resources needed are likely to be delivered to Los Angeles Basin transmission gateways. Integration of renewable resources requires interconnection to the power grid, expansion of the transmission system capability between the backbone power grid and transmission gateways, and increase in delivery capacity from transmission gateways to the local load centers. To scope the transmission, operations, and reliability issues for renewables integration, this research focused on the Los Angeles Basin Area transmission gateways where most of new renewables are likely. Necessary actions for successful renewables integration include: (1) Expand Los Angeles Basin Area transmission gateway and nomogram limits by 10,000 to 20,000 MW; (2) Upgrade local transmission network for deliverability to load centers; (3) Secure additional storage, demand management, automatic load control, dynamic pricing, and other resources that meet regulation and ramping needed in real time operations; (4) Enhance local voltage support; and (5) Expand deliverability from Los Angeles to San Diego and Northern California.

Eto, Joseph; Budhraja, Vikram; Ballance, John; Dyer, Jim; Mobasheri, Fred; Eto, Joseph

2008-07-01T23:59:59.000Z

257

Use of Frequency Response Metrics to Assess the Planning and Operating Requirements for Reliable Integration of Variable Renewable Generation  

SciTech Connect

An interconnected electric power system is a complex system that must be operated within a safe frequency range in order to reliably maintain the instantaneous balance between generation and load. This is accomplished by ensuring that adequate resources are available to respond to expected and unexpected imbalances and restoring frequency to its scheduled value in order to ensure uninterrupted electric service to customers. Electrical systems must be flexible enough to reliably operate under a variety of"change" scenarios. System planners and operators must understand how other parts of the system change in response to the initial change, and need tools to manage such changes to ensure reliable operation within the scheduled frequency range. This report presents a systematic approach to identifying metrics that are useful for operating and planning a reliable system with increased amounts of variable renewable generation which builds on existing industry practices for frequency control after unexpected loss of a large amount of generation. The report introduces a set of metrics or tools for measuring the adequacy of frequency response within an interconnection. Based on the concept of the frequency nadir, these metrics take advantage of new information gathering and processing capabilities that system operators are developing for wide-area situational awareness. Primary frequency response is the leading metric that will be used by this report to assess the adequacy of primary frequency control reserves necessary to ensure reliable operation. It measures what is needed to arrest frequency decline (i.e., to establish frequency nadir) at a frequency higher than the highest set point for under-frequency load shedding within an interconnection. These metrics can be used to guide the reliable operation of an interconnection under changing circumstances.

Eto, Joseph H.; Undrill, John; Mackin, Peter; Daschmans, Ron; Williams, Ben; Haney, Brian; Hunt, Randall; Ellis, Jeff; Illian, Howard; Martinez, Carlos; O' Malley, Mark; Coughlin, Katie; LaCommare, Kristina Hamachi

2010-12-20T23:59:59.000Z

258

Two new methods to assess short-term transmission reliability + **Jose R. Arce G *Marija D, Ilid ` Francisco F. Garces  

E-Print Network (OSTI)

wbrni((ed by (he demand in t;lls new method the et?er~ price after the occurrence of conlmgerq by the demand In an explfclt way In IhIScase the enera gmcecalculated beforethe occurrence qf contingency Institute of Technology Cambridge, MA, USA actually represents different problems and interests, ranging

Ilic, Marija D.

259

The Effect of Soil Moisture on the Short-Term Climate and Hydrology Change—A Numerical Experiment  

Science Conference Proceedings (OSTI)

This paper describes a series of numerical experiments simulating the effect of large-scale irrigation on short-term changes of hydrology and climate. This is done through the use of a simple general circulation model, with a limited ...

T-C. Yeh; R. T. Wetherald; S. Manabe

1984-03-01T23:59:59.000Z

260

Application of a dynamic-stochastic approach to short-term forecasting of the atmospheric boundary layer.  

Science Conference Proceedings (OSTI)

A two-dimensional, dynamic-stochastic model presented in this study is used for short-term forecasting of vertical profiles of air temperature and wind velocity orthogonal components in the atmospheric boundary layer (ABL). The technique of using ...

V. S. Komarov; A. V. Lavrinenko; N. Ya. Lomakina; S. N. Il’in

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Using futures prices to filter short-term volatility and recover a latent, long-term price series for oil  

E-Print Network (OSTI)

Oil prices are very volatile. But much of this volatility seems to reflect short-term,transitory factors that may have little or no influence on the price in the long run. Many major investment decisions should be guided ...

Herce, Miguel Angel

2006-01-01T23:59:59.000Z

262

Short-Term Climate Variability and Atmospheric Teleconnections from Satellite-Observed Outgoing Longwave Radiation. Part I: Simultaneous Relationships  

Science Conference Proceedings (OSTI)

Satellite-inferred short-term climate variability and atmospheric teleconnections are studied using seven years (1974–81) of Outgoing Longwave Radiation (OLR) data from NOAA polar orbiters. This study utilizes composite, partition-of-variance and ...

Ka-Ming Lau; Paul H. Chan

1983-12-01T23:59:59.000Z

263

A Survey of the Rates and Products of Short-Term Photosynthesis in Plants of 9 Phyla  

E-Print Network (OSTI)

of alanine D. 5 min. photosynthesis squash showing absencePRODUCTS OF SHORT-TERM PHOTOSYNTHESIS I N PLANTS OF 9 PHYLATable III A. 5 min. photosynthesis Fontinalis showing high

Calvin, M.; Norris, R.E.; Norris, Louisa

1954-01-01T23:59:59.000Z

264

An Investigation of the Short-Term Predictability of Precipitation Using High-Resolution Composite Radar Observations  

Science Conference Proceedings (OSTI)

The short-term predictability of precipitation patterns observed by meteorological radar is an important concept as it establishes a means to characterize precipitation and provides an upper limit on the extent of useful nowcasting. Predictability ...

Evan Ruzanski; V. Chandrasekar

2012-05-01T23:59:59.000Z

265

EVALUATING SHORT-TERM CLIMATE VARIABILITY IN THE LATE HOLOCENE OF THE NORTHERN GREAT PLAINS  

Science Conference Proceedings (OSTI)

This literature study investigated methods and areas to deduce climate change and climate patterns, looking for short-term cycle phenomena and the means to interpret them. Many groups are actively engaged in intensive climate-related research. Ongoing research might be (overly) simplified into three categories: (1) historic data on weather that can be used for trend analysis and modeling; (2) detailed geological, biological (subfossil), and analytical (geochemical, radiocarbon, etc.) studies covering the last 10,000 years (about since last glaciation); and (3) geological, paleontological, and analytical (geochemical, radiometric, etc.) studies over millions of years. Of importance is our ultimate ability to join these various lines of inquiry into an effective means of interpretation. At this point, the process of integration is fraught with methodological troubles and misconceptions about what each group can contribute. This project has met its goals to the extent that it provided an opportunity to study resource materials and consider options for future effort toward the goal of understanding the natural climate variation that has shaped our current civilization. A further outcome of this project is a proposed methodology based on ''climate sections'' that provides spatial and temporal correlation within a region. The method would integrate cultural and climate data to establish the climate history of a region with increasing accuracy with progressive study and scientific advancement (e. g., better integration of regional and global models). The goal of this project is to better understand natural climatic variations in the recent past (last 5000 years). The information generated by this work is intended to provide better context within which to examine global climate change. The ongoing project will help to establish a basis upon which to interpret late Holocene short-term climate variability as evidenced in various studies in the northern Great Plains, northern hemisphere, and elsewhere. Finally these data can be integrated into a history of climate change and predictive climate models. This is not a small undertaking. The goals of researchers and the methods used vary considerably. The primary task of this project was literature research to (1) evaluate existing methodologies used in geologic climate change studies and evidence for short-term cycles produced by these methodologies and (2) evaluate late Holocene climate patterns and their interpretations.

Joseph H. Hartman

1999-09-01T23:59:59.000Z

266

Short-Term Energy Outlook - U.S. Energy Information Administration (EIA)  

U.S. Energy Information Administration (EIA) Indexed Site

‹ Analysis & Projections ‹ Analysis & Projections Short-Term Energy Outlook Release Date: December 10, 2013 | Next Release Date: January 7, 2014 | Full Report | Text Only | All Tables | All Figures Glossary › FAQS › Overview STEO Report Highlights Prices Global Crude Oil and Liquid Fuels U.S. Crude Oil and Liquid Fuels Natural Gas Coal Electricity Renewables and CO2 Emissions U.S. Economic Assumptions Data Figures Tables Custom Table Builder Real Prices Viewer Forecast Changes (PDF) Special Analysis Price Uncertainty Custom Table Builder Frequency: Annual Monthly Quarterly Select a Year Range: 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 to 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014

267

QUARTER SHORT-TERM ENERGY OUTLOOK QUARTERLY PROJECTIONS ENERGY INFORMATION ADMINISTRATION  

Gasoline and Diesel Fuel Update (EIA)

1Q) 1Q) 1991 1 QUARTER SHORT-TERM ENERGY OUTLOOK QUARTERLY PROJECTIONS ENERGY INFORMATION ADMINISTRATION February 1991 This publication may be purchased from the Superintendent of Documents, U.S. Government Printing Office. Purchasing in formation for this or other Energy Information Administration (EIA) publications may be obtained from the Government Printing Office or ElA's National Energy Information Center. Questions on energy statistics should be directed to the Center by mail, telephone, or telecommunications device for the hearing impaired. Addresses, telephone numbers, and hours are as follows: National Energy Information Center, El-231 Energy Information Administration Forrestal Building, Room 1F-048 Washington, DC 20585 (202) 586-8800 Telecommunications Device for the

268

Microsoft Word - Alcoa_short-term_amendments2_CX.docx  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Mark Miller Mark Miller Account Executive, Long-term Sales and Purchases - PT-5 Proposed Action: Short-term Additional Amendments to the Alcoa Power Sales Agreement Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): A2 - Clarifying or administrative contract actions Location: Portland, OR and Ferndale, WA Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: BPA proposes to execute one or more additional amendments to its existing 2009 Power Sales Agreement (Agreement) with Alcoa, Inc. (Alcoa) to further extend the Agreement's Initial Period provisions. The current date for expiration of these provisions under the most recent amendment (Amendment Number 4) is September 30, 2012. The current proposal involves executing one or more additional

269

DOBEIA-0202(83/4Q) Short-Term Energy Outlook Quarterly Projections  

Gasoline and Diesel Fuel Update (EIA)

DOBEIA-0202(83/4Q) DOBEIA-0202(83/4Q) Short-Term Energy Outlook Quarterly Projections November 1983 Energy Information Administration Washington, D.C. t rt jrt .ort lort .lort lort lort lort <.ort ort Tt- .-m .erm -Term -Term Term Term Term Term Term Term Term Term Term Term Term Term Term Nrm ,iergy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy ^nergy Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Short Short Short Short- Short- Short- Short- Short- Short- Short- Short- Short- Short- Short- Short- Short- Short- Short- Short- Short Short Short Short Short-

270

Short-Term Energy Outlook - U.S. Energy Information Administration (EIA)  

U.S. Energy Information Administration (EIA) Indexed Site

‹ Analysis & Projections ‹ Analysis & Projections Short-Term Energy Outlook Release Date: December 10, 2013 | Next Release Date: January 7, 2014 | Full Report | Text Only | All Tables | All Figures Glossary › FAQS › Overview STEO Report Highlights Prices Global Crude Oil and Liquid Fuels U.S. Crude Oil and Liquid Fuels Natural Gas Coal Electricity Renewables and CO2 Emissions U.S. Economic Assumptions Data Figures Tables Custom Table Builder Real Prices Viewer Forecast Changes (PDF) Special Analysis Price Uncertainty Highlights After falling by more than 40 cents per gallon from the beginning of September through mid-November, weekly U.S. average regular gasoline retail prices increased by 8 cents per gallon to reach $3.27 per gallon on December 2, 2013, due in part to unplanned refinery maintenance and higher

271

DOE/EIA-0202(85/1Q) Short-Term Energy Outlook Quarterly Projections  

Gasoline and Diesel Fuel Update (EIA)

1Q) 1Q) Short-Term Energy Outlook Quarterly Projections January 1985 Published: February 1985 Energy Information Administration Washington, D.C. t rt jrt .ort lort lort lort nort lort *.ort ort Tt .m .erm -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term uergy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy ^nergy Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Short Short Short Short Short Short Short Short Short Short Short Short Short Short Short Short Short Short Short Short Short Short Short Short

272

DOE/EIA-0202(84/4Q) Short-Term Energy Outlook Quarterly Projections  

Gasoline and Diesel Fuel Update (EIA)

4Q) 4Q) Short-Term Energy Outlook Quarterly Projections October 1984 Published: November 1984 Energy Information Administration Washington, D.C. t rt jrt .ort lort iort lort iort lort \ort ort Tt .erm Term Term Term Term Term Term Term Term Term Term Term Term Term -Term -Term xrm nergy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy ^nergy Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Short- Short- Short- Short- Short- Short- Short- Short- Short- Short- Short- Short- Short Short- Short- Short Short Short Short Short Short

273

Short-Term Energy Outlook - U.S. Energy Information Administration (EIA)  

Gasoline and Diesel Fuel Update (EIA)

Release Schedule Release Schedule Release Date. The Short-Term Energy Outlook (STEO) scheduling procedure calls for the release of the STEO on the first Tuesday following the first Thursday of each month. For example, since the first Thursday of July 2009 was July 2, under this plan, the July edition was released on Tuesday, July 7. If a Federal holiday falls on the Monday before the normal release date the release is delayed until Wednesday. There may be the occasional unusual delay in the release because of scheduling around other events, such as the annual EIA Conference in April 2009. Barring holidays or unusual rescheduling, the STEO will normally appear between the 6th and the 12th of the month. Any unforeseen scheduling adjustments will be posted here and/or on the STEO homepage.

274

Short-Term Energy Outlook - U.S. Energy Information Administration (EIA)  

Gasoline and Diesel Fuel Update (EIA)

Special Analysis Special Analysis + EXPAND ALL Feature Articles Status of Libyan Loading Ports and Oil and Natural Gas Fields September 2013 PDF EIA Estimates of Crude Oil and Liquid Fuels Supply Disruptions September 2013 PDF 2013 Outlook for Gulf of Mexico Hurricane-Related Production Outages June 2013 PDF Summer 2013 Outlook for Residential Electric Bills June 2013 PDF Key drivers for EIA's short-term U.S. crude oil production outlook February 2013 PDF Constraints in New England likely to affect regional energy prices this winter January 2013 PDF Change in STEO Regional and U.S. Degree Day Calculations September 2012 PDF Changes to Electricity and Renewables Tables August 2012 PDF Brent Crude Oil Spot Price Forecast July 2012 PDF 2012 Outlook for Hurricane-Related Production Outages in the Gulf of Mexico June 2012 PDF

275

Algorithms for Short-Term Production-Planning of Cogeneration Plants  

E-Print Network (OSTI)

A cogeneration plant, feeding its output water into a district-heating network, may include several types of energy producing units. The most important being the Cogeneration unit, which produces both heat and electricity. Most plants also have a Heat water storage. Finding the optimal production of both heat and electricity and the optimal use of the storage is a challenging mixed integer nonlinear optimization problem. The calculations may be divided into two sub-problems. The unit commitment problem is the problem to determine when a unit should be producing (on) or not (off). To solve the economic dispatch problem is to find the optimal production plan given which units are producing in each time interval. Together the solution of these two problems form the solution of the short-term production-planning problem. In this thesis a general approach for the mathematical modeling of a cogeneration plant is presented. The model objective function is nonlinear, with nonlinear constraints....

Erik Dotzauer

1997-01-01T23:59:59.000Z

276

Short-term Variations in the Galactic Environment of the Sun  

E-Print Network (OSTI)

The galactic environment of the Sun varies over short timescales as the Sun and interstellar clouds travel through space. Small variations in the dynamics, ionization, density, and magnetic field strength of the interstellar medium (ISM) surrounding the Sun yield pronounced changes in the heliosphere. We discuss essential information required to understand short-term variations in the galactic environment of the Sun, including the distribution and radiative transfer properties of nearby ISM, and variations in the boundary conditions of the heliosphere as the Sun traverses clouds. The most predictable transitions are when the Sun emerged from the Local Bubble interior and entered the cluster of local interstellar clouds flowing past the Sun, within the past 140,000 years, and again when the Sun entered the local interstellar cloud now surrounding and inside of the solar system, sometime during the past 44,000 years.

Priscilla C. Frisch; Jonathan D. Slavin

2006-01-17T23:59:59.000Z

277

Short-Term Energy Outlook - U.S. Energy Information Administration (EIA)  

U.S. Energy Information Administration (EIA) Indexed Site

Market Prices and Uncertainty Report Market Prices and Uncertainty Report This is a regular monthly supplement to the EIA Short-Term Energy Outlook. Contact: James Preciado (James.Preciado@eia.gov) Full Report Crude Oil Prices: International crude oil benchmarks moved higher in November, showing their first month-over-month increase since August, while U.S. crude oil prices moved higher during the first week of December. The North Sea Brent front month futures price settled at $110.98 per barrel on December 5, an increase of $5.07 per barrel since its close on November 1 (Figure 1). The West Texas Intermediate (WTI) front month futures contract rose $2.77 per barrel compared to November 1, settling at $97.38 per barrel on December 5. Figure 1: Historical crude oil front month futures prices

278

Reliability Assessment of a Power Grid with Customer Operated CHP Systems Using Monte Carlo Simulation.  

E-Print Network (OSTI)

??This thesis presents a method for reliability assessment of a power grid with distributed generation providing support to the system. The distributed generation units considered… (more)

Manohar, Lokesh Prakash

2009-01-01T23:59:59.000Z

279

Winchester/Camberley Homes New Construction Test House Design, Construction, and Short-Term Testing in a Mixed-Humid Climate  

SciTech Connect

The NAHB Research Center partnered with production builder Winchester/Camberley Homes to build a DOE Building America New Construction Test House (NCTH). This single family, detached house, located in the mixed-humid climate zone of Silver Spring, MD, was completed in June 2011. The primary goal for this house was to improve energy efficiency by 30% over the Building America B10 benchmark by developing and implementing an optimized energy solutions package design that could be cost effectively and reliably constructed on a production basis using quality management practices. The intent of this report is to outline the features of this house, discuss the implementation of the energy efficient design, and report on short-term testing results. During the interactive design process of this project, numerous iterations of the framing, air sealing, insulation, and space conditioning systems were evaluated for energy performance, cost, and practical implementation. The final design featured numerous advanced framing techniques, high levels of insulation, and the HVAC system entirely within conditioned space. Short-term testing confirmed a very tight thermal envelope and efficient and effective heating and cooling. In addition, relevant heating, cooling, humidity, energy, and wall cavity moisture data will be collected and presented in a future long-term report.

Mallav, D.; Wiehagen, J.; Wood, A.

2012-10-01T23:59:59.000Z

280

Short-Term Energy Monitoring (STEM): Application of the PSTAR method to a residence in Fredericksburg, Virginia  

DOE Green Energy (OSTI)

This report describes a project to assess the thermal quality of a residential building based on short-term tests during which a small number of data channels are measured. The project is called Short- Term Energy Monitoring (STEM). Analysis of the data provides extrapolation to long-term performance. The test protocol and analysis are based on a unified method for building simulations and short-term testing called Primary and Secondary Terms Analysis and Renormalization (PSTAR). In the PSTAR method, renormalized parameters are introduced for the primary terms such that the renormalized energy balance is best satisfied in the least squares sense; hence, the name PSTAR. The mathematical formulation of PSTAR is detailed in earlier reports. This report describes the short-term tests and data analysis performed using the PSTAR method on a residential building in Fredricksburg, Virginia. The results demonstrate the ability of the PSTAR method to provide a realistically complex thermal model of a building, and determine from short-term tests the statics as well as the dynamics of a building, including solar dynamics. 10 refs., 12 figs., 2 tabs.

Subbarao, K.; Burch, J.D.; Hancock, C.E.; Lekov, A.; Balcomb, J.D.

1988-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Implications of Wide-Area Geographic Diversity for Short- Term Variability of Solar Power  

E-Print Network (OSTI)

Balancing authorities (BAs) are the entities responsible forit is not a reliability requirement, BAs in the U.S.power transfers with other BAs generally using hourly

Mills, Andrew

2010-01-01T23:59:59.000Z

282

Short-Term Energy Outlook - U.S. Energy Information Administration (EIA)  

Gasoline and Diesel Fuel Update (EIA)

STEO Archives STEO Archives Previous Short-Term Energy Outlook reports are available in the original Adobe Acrobat PDF file with text, charts, and tables, or just the monthly data tables in an Excel file. + EXPAND ALL 2013 STEO Issues Release Date Full PDF Report Excel Data File Energy Price Volatility and Forecast Uncertainty December 2013 12/10/2013 dec13.pdf dec13_base.xlsx dec13_uncertainty.pdf November 2013 11/13/2013 nov13.pdf nov13_base.xlsx nov13_uncertainty.pdf October 2013 10/08/2013 oct13.pdf oct13_base.xlsx oct13_uncertainty.pdf September 2013 09/10/2013 sep13.pdf sep13_base.xlsx sep13_uncertainty.pdf August 2013 08/06/2013 aug13.pdf aug13_base.xlsx aug13_uncertainty.pdf July 2013 07/09/2013 jul13.pdf jul13_base.xlsx jul13_uncertainty.pdf

283

Short Term Energy Monitoring: What Does This Information Mean to the Facility Energy Manager?  

E-Print Network (OSTI)

Engineers at the Energy Systems Laboratory at Texas A&M University have completed short term energy metering studies at a complex of offices in northern Texas and several buildings on the Texas A&M University campus during the past 18 months. These studies typically consisted of installing electrical metering at the, whole building level and included sub-metering of selected circuits when possible. Personnel would go through the entire facility ensuring that all lighting, fan, and mechanical systems were active and on. After a period of approximately 10 minutes, a selected areas of the building would be "turned off." This sequence was repeated for all areas of interest in the facility. At the end of the lighting test, air handlers, then chilling and pumping equipment was turned off (if applicable) and a final ten minutes of electrical use data taken. In each of these facilities, lighting system load verification was the primary goal and the data provided a very good accounting for all buildings studied. The northern Texas office buildings in particular, were interested in these data for comparison with a recently hired performance contractor. The A&M study was a follow-up to an earlier lighting study that had been conducted by the campus energy office. Base electrical load data was also determined from these tests. This paper presents results of these studies and suggests that the method is attractive to both contractors and facility energy managers as well.

Bryant, J. A.; Carlson, K. A.

2000-01-01T23:59:59.000Z

284

Biological monitoring of oil shale products and effluents using short-term genetic analyses  

DOE Green Energy (OSTI)

The long-term health hazards such as mutagenesis, carcinogenesis, and teratogenesis due to the exposure to crude shale oil, particulate pollutants, and the leachates from raw or spent shale constitute a major concern in the development of shale oil technology. In order to monitor such biological effects, we have applied short-term genetic analyses with the exemplary test materials. The Salmonella/microsomal activation system (Ames assay) was generally applicable but only upon chemical fractionation. The Stedman liquid-liquid extraction procedure or the Sephadex gel filtration (LH-20) technique were effectively utilized. Mutagenicity analyses with various crude oils and product water have revealed biological activity in the basic (aromatic amine fractions) or in the neutral (polyaromatic hydrocarbon fraction) fractions. Extracts and chromatographically isolated materials from raw and spent shale were subjected to mutagenicity studies. Mutagenic activity was noted and correlates with the biological activity of compounds that are either identified or predicted to occur in these materials. Comparison to other energy technologies and overall health hazard of the test materials are discussed.

Rao, T.K.; Epler, J.L.; Schmidt-Collerus, J.J.; Leffler, L.; Guerin, M.R.

1979-01-01T23:59:59.000Z

285

Summary Short?Term Energy Outlook Supplement: Energy Price Volatility and Forecast Uncertainty 1  

E-Print Network (OSTI)

It is often noted that energy prices are quite volatile, reflecting market participants’ adjustments to new information from physical energy markets and/or markets in energyrelated financial derivatives. Price volatility is an indication of the level of uncertainty, or risk, in the market. This paper describes how markets price risk and how the marketclearing process for risk transfer can be used to generate “price bands ” around observed futures prices for crude oil, natural gas, and other commodities. These bands provide a quantitative measure of uncertainty regarding the range in which markets expect prices to trade. The Energy Information Administration’s (EIA) monthly Short-Term Energy Outlook (STEO) publishes “base case ” projections for a variety of energy prices that go out 12 to 24 months (every January the STEO forecast is extended through December of the following year). EIA has recognized that all price forecasts are highly uncertain and has described the uncertainty by identifying the market factors that may significantly move prices away from their expected paths, such as economic growth, Organization of Petroleum Exporting Countries (OPEC) behavior, geo-political events, and hurricanes.

unknown authors

2009-01-01T23:59:59.000Z

286

SHORT-TERM SOLAR FLARE LEVEL PREDICTION USING A BAYESIAN NETWORK APPROACH  

SciTech Connect

A Bayesian network approach for short-term solar flare level prediction has been proposed based on three sequences of photospheric magnetic field parameters extracted from Solar and Heliospheric Observatory/Michelson Doppler Imager longitudinal magnetograms. The magnetic measures, the maximum horizontal gradient, the length of neutral line, and the number of singular points do not have determinate relationships with solar flares, so the solar flare level prediction is considered as an uncertainty reasoning process modeled by the Bayesian network. The qualitative network structure which describes conditional independent relationships among magnetic field parameters and the quantitative conditional probability tables which determine the probabilistic values for each variable are learned from the data set. Seven sequential features-the maximum, the mean, the root mean square, the standard deviation, the shape factor, the crest factor, and the pulse factor-are extracted to reduce the dimensions of the raw sequences. Two Bayesian network models are built using raw sequential data (BN{sub R}) and feature extracted data (BN{sub F}), respectively. The explanations of these models are consistent with physical analyses of experts. The performances of the BN{sub R} and the BN{sub F} appear comparable with other methods. More importantly, the comprehensibility of the Bayesian network models is better than other methods.

Yu Daren; Huang Xin; Hu Qinghua; Zhou Rui [Harbin Institute of Technology, No. 92 West Da Zhi Street, Harbin, Heilongjiang Province 150001 (China); Wang Huaning [National Astronomical Observatories, 20A Datun Road, Chaoyang District, Beijing 100012 (China); Cui Yanmei, E-mail: huangxinhit@yahoo.com.c [Center for Space Science and Applied Research, No. 1 Nanertiao, Zhongguancun, Haidian District, Beijing 100080 (China)

2010-02-10T23:59:59.000Z

287

Oxygenate Supply/Demand Balances in the Short-Term Integrated Forecasting Model (Released in the STEO March 1998)  

Reports and Publications (EIA)

The blending of oxygenates, such as fuel ethanol and methyl tertiary butyl ether (MTBE), into motor gasoline has increased dramatically in the last few years because of the oxygenated and reformulated gasoline programs. Because of the significant role oxygenates now have in petroleum product markets, the Short-Term Integrated Forecasting System (STIFS) was revised to include supply and demand balances for fuel ethanol and MTBE. The STIFS model is used for producing forecasts in the Short-Term Energy Outlook. A review of the historical data sources and forecasting methodology for oxygenate production, imports, inventories, and demand is presented in this report.

Information Center

1998-03-01T23:59:59.000Z

288

Model documentation report: Short-term Integrated Forecasting System demand model 1985. [(STIFS)  

DOE Green Energy (OSTI)

The Short-Term Integrated Forecasting System (STIFS) Demand Model consists of a set of energy demand and price models that are used to forecast monthly demand and prices of various energy products up to eight quarters in the future. The STIFS demand model is based on monthly data (unless otherwise noted), but the forecast is published on a quarterly basis. All of the forecasts are presented at the national level, and no regional detail is available. The model discussed in this report is the April 1985 version of the STIFS demand model. The relationships described by this model include: the specification of retail energy prices as a function of input prices, seasonal factors, and other significant variables; and the specification of energy demand by product as a function of price, a measure of economic activity, and other appropriate variables. The STIFS demand model is actually a collection of 18 individual models representing the demand for each type of fuel. The individual fuel models are listed below: motor gasoline; nonutility distillate fuel oil, (a) diesel, (b) nondiesel; nonutility residual fuel oil; jet fuel, kerosene-type and naphtha-type; liquefied petroleum gases; petrochemical feedstocks and ethane; kerosene; road oil and asphalt; still gas; petroleum coke; miscellaneous products; coking coal; electric utility coal; retail and general industry coal; electricity generation; nonutility natural gas; and utility petroleum. The demand estimates produced by these models are used in the STIFS integrating model to produce a full energy balance of energy supply, demand, and stock change. These forecasts are published quarterly in the Outlook. Details of the major changes in the forecasting methodology and an evaluation of previous forecast errors are presented once a year in Volume 2 of the Outlook, the Methodology publication.

Not Available

1985-07-01T23:59:59.000Z

289

Short-Term Monitoring to Diagnose Comfort Problems in a Residence in Central Texas  

E-Print Network (OSTI)

This paper presents results from a project to resolve comfort problems created by high indoor humidity in a 3,400 sq.ft. house in Bryan, Texas. The case study house had been certified by the local utility to meet their energy efficiency standards. However, the resident of the house complained that the house felt too humid although the desired temperature conditions were being maintained. Several HVAC contractors had been previously hired to resolve the problem without success. The field measurements undertaken to diagnose the problem are typical of those that could be undertaken by a house inspector and include an inspection of the construction of the house, short-term monitoring of temperature and humidity, blower door tests and whole-house pressurization tests. To perform the analysis both floors of the house were instrumented with portable data loggers and monitored for a period of two weeks to measure the temperature and relative humidity of the supply, return and ambient conditions. Analysis procedures applied to the house include comparing the measured data against the ASHRAE comfort zone (ASHRAE, 1997) which confirmed adequate zone temperatures with high humidity conditions, and inadequate supply air delivery temperatures for humidity removal. Combined results of the blower door tests and whole-house pressurization tests indicated a potential for leakage through the return air duct. After the recommendations were presented to the homeowner, a new contractor was hired and retrofits applied on the house (i.e., cleaning the cooling coils, enlarging the compressor and relining of the return duct). Measurements were then repeated to determine that the problem had been f ~ e d . This paper describes the case study residence, the measurements used to diagnose the problem, analysis methods, and presents results of the application of the analysis.

Kootin-Sanwu, V.; Sresthaputra, A.; Haberl, J. S.

2000-01-01T23:59:59.000Z

290

Short Term Irradiation Test of Fuel Containing Minor Actinides Using the Experimental Fast Reactor Joyo  

Science Conference Proceedings (OSTI)

A mixed oxide containing minor actinides (MA-MOX) fuel irradiation program is being conducted using the experimental fast rector Joyo of the Japan Atomic Energy Agency to research early thermal behavior of MA-MOX fuel. Two irradiation experiments were conducted as part of the short-term phase of this program in May and August 2006. Six prepared fuel pins included MOX fuel containing 3% or 5% americium (Am-MOX), and MOX fuel containing 2% americium and 2% neptunium (Np/Am-MOX). The first test was conducted with high linear heat rates of approximately 430 W/cm maintained during only 10 minutes. After 10 minutes irradiation test, the test subassembly was transferred to the hot cell facility and an Am-MOX pin and a Np/Am-MOX pin were replaced with dummy pins with neutron dosimeters. The test subassembly loaded with the remaining four fuel pins was re-irradiated in Joyo for 24-hours in August 2006 at nearly the same linear power to obtain re-distribution data on MA-MOX fuel. The linear heat rate for each MA-MOX test fuel pin was calculated using the Monte Carlo calculation code MCNP. The calculated fission rates were compared with the measured data based on the Nd-148 method. The maximum linear heat rate was approximately 444{+-}19 W/cm at the actual reactor power of 119.6 MWt. Post irradiation examination of these pins to confirm the absence of fuel melting and the local concentration under irradiation of NpO{sub 2-x} or AmO{sub 2-x}, in the (U,Pu)0{sub 2-x}, fuel are underway. The test results are expected to reduce uncertainties on the margin in the thermal design for MA-MOX fuel. (authors)

Sekine, Takashi; Soga, Tomonori; Koyama, Shin-ichi; Aoyama, Takafumi [Oarai Research and Development Center, Japan Atomic Energy Agency. 4002 Narita, Oarai, Ibaraki 311-1393 (Japan); Wootan, David [Pacific Northwest National Laboratoy, M/S K8-34, P.O. Box 999 Richland, WA 99352 (United States)

2007-07-01T23:59:59.000Z

291

Short-term supply chain management in upstream natural gas systems  

E-Print Network (OSTI)

Natural gas supply chain planning and optimization is important to ensure security and reliability of natural gas supply. However, it is challenging due to the distinctive features of natural gas supply chains. These ...

Selot, Ajay

2009-01-01T23:59:59.000Z

292

High Statistics Study of Nearby Type 1a Supernovae. QUEST Camera Short Term Maintenance: Final Technical Report  

SciTech Connect

The Quest Camera was installed at the Palomar Obervatory in California. The camera was used to carry out a survey of low redshift Type 1a supernovae.The purpose of this DOE grant was to perform short term maintenance on the QUEST camera.

Baltay, Charles

2012-10-16T23:59:59.000Z

293

Short-Term Oceanic Response Predicted by a Mixed Layer Model Forced with a Sector Atmospheric Model  

Science Conference Proceedings (OSTI)

A one-dimensional version of the Garwood bulk, oceanic mixed layer model is used to simulate the short- term response in a 60° sector. The atmospheric forcing is derived from a version of the UCLA general circulation model used by Sandgathe to ...

Russell L. Elsberry; Scott A. Sandgathe; Frank J. Winninghoff

1984-01-01T23:59:59.000Z

294

Accurate Short Term Load Forecasting for an ESKOM Major Distribution Region in South Africa: An Application of EPRI ANNSTLF  

Science Conference Proceedings (OSTI)

ANNSTLF (Artificial Neural Network Short-term Load Forecaster), developed by EPRI, is a Microsoft Windows-based neural-network load forecasting software that uses historical load and weather parameters to predict future load values. The software requires customization for each utility. This project involved customizing ANNSTLF for the Eastern Region of the South African energy company ESKOM.

2005-09-27T23:59:59.000Z

295

Synergistic Effects of Ultrasound-Activated Microbubbles and Doxorubicin on Short-Term Survival of Mouse Mammary  

E-Print Network (OSTI)

Synergistic Effects of Ultrasound-Activated Microbubbles and Doxorubicin on Short-Term Survival and incubated for 24 hours at 37 °C, 100% humidity and 5% CO2 . The efficacies of the drug only and ultrasound-activated 24 hoursof treat- ment using the MTT Cell Proliferation Assay. The combined therapy resulted in 60

Illinois at Urbana-Champaign, University of

296

Short-Term Climatic Variability in the Thermal Structure of the Pacific Ocean during 1979–82  

Science Conference Proceedings (OSTI)

Short-term climatic variability in both sea surface temperature (SST) and vertically averaged temperature over the upper 400 m of ocean (Tav) is mapped over the Pacific from 20°S to 50°N each bimonth for four years from 1979 to 1982, leading up ...

Warren B. White; Gary A. Meyers; Jean Rene Donguy; Stephen E. Pazan

1985-07-01T23:59:59.000Z

297

IEEE TRANSACTIONS ON ENERGY CONVERSION, VOL. 24, NO. 1, MARCH 2009 125 Short-Term Prediction of Wind Farm Power  

E-Print Network (OSTI)

IEEE TRANSACTIONS ON ENERGY CONVERSION, VOL. 24, NO. 1, MARCH 2009 125 Short-Term Prediction of Wind Farm Power: A Data Mining Approach Andrew Kusiak, Member, IEEE, Haiyang Zheng, and Zhe Song, Student Member, IEEE Abstract--This paper examines time series models for predicting the power of a wind

Kusiak, Andrew

298

Use of short-term test systems for the prediction of the hazard represented by potential chemical carcinogens  

Science Conference Proceedings (OSTI)

It has been hypothesized that results from short-term bioassays will ultimately provide information that will be useful for human health hazard assessment. Historically, the validity of the short-term tests has been assessed using the framework of the epidemiologic/medical screens. In this context, the results of the carcinogen (long-term) bioassay is generally used as the standard. However, this approach is widely recognized as being biased and, because it employs qualitative data, cannot be used to assist in isolating those compounds which may represent a more significant toxicologic hazard than others. In contrast, the goal of this research is to address the problem of evaluating the utility of the short-term tests for hazard assessment using an alternative method of investigation. Chemicals were selected mostly from the list of carcinogens published by the International Agency for Research on Carcinogens (IARC); a few other chemicals commonly recognized as hazardous were included. Tumorigenicity and mutagenicity data on 52 chemicals were obtained from the Registry of Toxic Effects of Chemical Substances (RTECS) and were analyzed using a relative potency approach. The data were evaluated in a format which allowed for a comparison of the ranking of the mutagenic relative potencies of the compounds (as estimated using short-term data) vs. the ranking of the tumorigenic relative potencies (as estimated from the chronic bioassays). Although this was a preliminary investigation, it offers evidence that the short-term tests systems may be of utility in ranking the hazards represented by chemicals which may contribute to increased carcinogenesis in humans as a result of occupational or environmental exposures. 177 refs., 8 tabs.

Glass, L.R.; Jones, T.D.; Easterly, C.E.; Walsh, P.J.

1990-10-01T23:59:59.000Z

299

Short?Term Energy Outlook Supplement: Key drivers for EIA’s ...  

U.S. Energy Information Administration (EIA)

site, thereby reducing operating and maintenance costs. ... Lease strategies can also contribute to drilling efficiency ...

300

The Role of Demand Resources In Regional Transmission Expansion Planning and Reliable Operations  

Science Conference Proceedings (OSTI)

Investigating the role of demand resources in regional transmission planning has provided mixed results. On one hand there are only a few projects where demand response has been used as an explicit alternative to transmission enhancement. On the other hand there is a fair amount of demand response in the form of energy efficiency, peak reduction, emergency load shedding, and (recently) demand providing ancillary services. All of this demand response reduces the need for transmission enhancements. Demand response capability is typically (but not always) factored into transmission planning as a reduction in the load which must be served. In that sense demand response is utilized as an alternative to transmission expansion. Much more demand response is used (involuntarily) as load shedding under extreme conditions to prevent cascading blackouts. The amount of additional transmission and generation that would be required to provide the current level of reliability if load shedding were not available is difficult to imagine and would be impractical to build. In a very real sense demand response solutions are equitably treated in every region - when proposed, demand response projects are evaluated against existing reliability and economic criteria. The regional councils, RTOs, and ISOs identify needs. Others propose transmission, generation, or responsive load based solutions. Few demand response projects get included in transmission enhancement plans because few are proposed. But this is only part of the story. Several factors are responsible for the current very low use of demand response as a transmission enhancement alternative. First, while the generation, transmission, and load business sectors each deal with essentially the same amount of electric power, generation and transmission companies are explicitly in the electric power business but electricity is not the primary business focus of most loads. This changes the institutional focus of each sector. Second, market and reliability rules have, understandably, been written around the capabilities and limitations of generators, the historic reliability resources. Responsive load limitations and capabilities are often not accommodated in markets or reliability criteria. Third, because of the institutional structure, demand response alternatives are treated as temporary solutions that can delay but not replace transmission enhancement. Financing has to be based on a three to five year project life as opposed to the twenty to fifty year life of transmission facilities. More can be done to integrate demand response options into transmission expansion planning. Given the societal benefits it may be appropriate for independent transmission planning organizations to take a more proactive role in drawing demand response alternatives into the resource mix. Existing demand response programs provide a technical basis to build from. Regulatory and market obstacles will have to be overcome if demand response alternatives are to be routinely considered in transmission expansion planning.

Kirby, Brendan J [ORNL

2006-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Assessment Methods and Operating Tools for Grid Reliability: An Executive Report on the Transmission Program of EPRI's Power Deliver y Reliability Initiative  

Science Conference Proceedings (OSTI)

Maintaining a high level of power grid reliability is one of the most pressing issues facing the electric power industry today. This report summarizes the achievements and planned activities of the transmission portion of the industry-wide Power Delivery Reliability Initiative, which is developing new tools and methods for assessing and improving grid reliability.

2001-03-26T23:59:59.000Z

302

Implications of Wide-Area Geographic Diversity for Short- Term Variability of Solar Power  

E-Print Network (OSTI)

grid coupled wind energy conversion Systems-An analysis insystem operations perspective. IEEE Transaction on Energy Conversion

Mills, Andrew

2010-01-01T23:59:59.000Z

303

RELIABILITY MODELS OF AGING PASSIVE COMPONENTS INFORMED BY MATERIALS DEGRADATION METRICS TO SUPPORT LONG-TERM REACTOR OPERATIONS  

Science Conference Proceedings (OSTI)

Paper describes a methodology for the synthesis of nuclear power plant service data with expert-elicited materials degradation information to estimate the future failure rates of passive components. This method should be an important resource to long-term plant operations and reactor life extension. Conventional probabilistic risk assessments (PRAs) are not well suited to addressing long-term reactor operations. Since passive structures and components are among those for which replacement can be least practical, they might be expected to contribute increasingly to risk in an aging plant; yet, passives receive limited treatment in PRAs. Furthermore, PRAs produce only snapshots of risk based on the assumption of time-independent component failure rates. This assumption is unlikely to be valid in aging systems. The treatment of aging passive components in PRA presents challenges. Service data to quantify component reliability models are sparse, and this is exacerbated by the greater data demands of age-dependent reliability models. Another factor is that there can be numerous potential degradation mechanisms associated with the materials and operating environment of a given component. This deepens the data problem since risk-informed management of component aging will demand an understanding of the long-term risk significance of individual degradation mechanisms. In this paper we describe a Bayesian methodology that integrates metrics of materials degradation susceptibility with available plant service data to estimate age-dependent passive component reliabilities. Integration of these models into conventional PRA will provide a basis for materials degradation management informed by predicted long-term operational risk.

Unwin, Stephen D.; Lowry, Peter P.; Toyooka, Michael Y.

2012-05-01T23:59:59.000Z

304

Short-Term Power Fluctuation of Wind Turbines: Analyzing Data from the German 250-MW Measurement Program from the Ancillary Services Viewpoint  

SciTech Connect

Short-term power fluctuations from wind farms may affect interconnected-grid operating costs and stability. With the increasing availability of wind power worldwide, this has become a concern for some utilities. Under electric industry restructuring in the United States, the impact of these fluctuations will be evaluated by examining provisions and costs of ancillary services for wind power. However, the magnitude of the impact and the effect of aggregation of multiple turbines are not well quantified due to a lack of actual wind farm power data. This paper analyzes individual turbine and aggregate power output data from the German ''250-MW Wind'' data project. Electric system load following and regulation impacts are examined as a function of the number of turbines and turbine spacing in order to quantify the impacts of aggregation. The results show a significant decrease in the relative system regulation burden with increasing number of turbines, even if the turbines are in close proximity.

Ernst, B. (Institut fur Solare Energieversorgungstechnik); Wan, Y.-H. (National Renewable Energy Laboratory); Kirby, B. (Oak Ridge National Laboratory)

1999-07-26T23:59:59.000Z

305

Short-Term Energy Outlook Supplement: Status of Libyan Loading Ports and Oil and Natural Gas Fields  

Gasoline and Diesel Fuel Update (EIA)

Short-Term Energy Outlook Supplement: Short-Term Energy Outlook Supplement: Status of Libyan Loading Ports and Oil and Natural Gas Fields Tuesday, September 10, 2013, 10:00AM EST Overview During July and August 2013, protests at major oil loading ports in the central-eastern region of Libya forced the complete or partial shut-in of oil fields linked to the ports. As a result of protests at ports and at some oil fields, crude oil production fell to 1.0 million barrels per day (bbl/d) in July and 600,000 bbl/d in August, although the production level at the end of August was far lower. At the end of August, an armed group blocked pipelines that connect the El Sharara and El Feel (Elephant) fields to the Zawiya and Mellitah export terminals, respectively, forcing the shutdown of those fields. El Sharara had been

306

PSTAR: Primary and secondary terms analysis and renormalization: A unified approach to building energy simulations and short-term monitoring  

DOE Green Energy (OSTI)

This report presents a unified method of hourly simulation of a building and analysis of performance data. The method is called Primary and Secondary Terms Analysis and Renormalization (PSTAR). In the PSTAR method, renormalized parameters are introduced for the primary terms such that the renormalized energy balance equation is best satisfied in the least squares sense, hence, the name PSTAR. PSTAR allows extraction of building characteristics from short-term tests on a small number of data channels. These can be used for long-term performance prediction (''ratings''), diagnostics, and control of heating, ventilating, and air conditioning systems (HVAC), comparison of design versus actual performance, etc. By combining realistic building models, simple test procedures, and analysis involving linear equations, PSTAR provides a powerful tool for analyzing building energy as well as testing and monitoring. It forms the basis for the Short-Term Energy Monitoring (STEM) project at SERI.

Subbarao, K.

1988-09-01T23:59:59.000Z

307

Research on Short-term Load Forecasting of the Thermoelectric Boiler Based on a Dynamic RBF Neural Network  

E-Print Network (OSTI)

As thermal inertia is the key factor for the lag of thermoelectric utility regulation, it becomes very important to forecast its short-term load according to running parameters. In this paper, dynamic radial basis function (RBF) neural network is proposed based on the RBF neural network with the associated parameters of sample deviation and partial sample deviation, which are defined for the purpose of effective judgment of new samples. Also, in order to forecast the load of sample with large deviation, sensitivity coefficients of input layer is given in this paper. To validate this model, an experiment is performed on a thermoelectric plant, and the experimental result indicates that the network can be put into extensive use for short-term load forecasting of thermoelectric utility.

Dai, W.; Zou, P.; Yan, C.

2006-01-01T23:59:59.000Z

308

The University of Minnesota aquifer thermal energy storage (ATES) field test facility -- system description, aquifer characterization, and results of short-term test cycles  

DOE Green Energy (OSTI)

Phase 1 of the Aquifer Thermal Energy Storage (ATES) Project at the University of Minnesota was to test the feasibility, and model, the ATES concept at temperatures above 100{degrees}C using a confined aquifer for the storage and recovery of hot water. Phase 1 included design, construction, and operation of a 5-MW thermal input/output field test facility (FTF) for four short-term ATES cycles (8 days each of heat injection, storage, and heat recover). Phase 1 was conducted from May 1980 to December 1983. This report describes the FTF, the Franconia-Ironton-Galesville (FIG) aquifer used for the test, and the four short-term ATES cycles. Heat recovery; operational experience; and thermal, chemical, hydrologic, and geologic effects are all included. The FTF consists of monitoring wells and the source and storage well doublet completed in the FIG aquifer with heat exchangers and a fixed-bed precipitator between the wells of the doublet. The FIG aquifer is highly layered and a really anisotropic. The upper Franconia and Ironton-Galesville parts of the aquifer, those parts screened, have hydraulic conductivities of {approximately}0.6 and {approximately}1.0 m/d, respectively. Primary ions in the ambient ground water are calcium and magnesium bicarbonate. Ambient temperature FIG ground water is saturated with respect to calcium/magnesium bicarbonate. Heating the ground water caused most of the dissolved calcium to precipitate out as calcium carbonate in the heat exchanger and precipitator. Silica, calcium, and magnesium were significantly higher in recovered water than in injected water, suggesting dissolution of some constituents of the aquifer during the cycles. Further work on the ground water chemistry is required to understand water-rock interactions.

Walton, M.; Hoyer, M.C.; Eisenreich, S.J.; Holm, N.L.; Holm, T.R.; Kanivetsky, R.; Jirsa, M.A.; Lee, H.C.; Lauer, J.L.; Miller, R.T.; Norton, J.L.; Runke, H. (Minnesota Geological Survey, St. Paul, MN (United States))

1991-06-01T23:59:59.000Z

309

Dispersants for Tube Fouling Control: Volume 1: Qualifications for a Short-Term Trial at ANO-2  

Science Conference Proceedings (OSTI)

This report summarizes the methodology and results of a detailed qualification program for injection of a high-purity polyacrylate dispersant into the secondary system of a pressurized water reactor (PWR) with recirculating steam generators. The dispersant inhibits corrosion product deposition, thereby mitigating sludge buildup and reducing tube fouling in nuclear steam generators. The qualification work was performed expressly for a short-term field trial at Arkansas Nuclear One Unit 2 (ANO-2) as part o...

2001-03-29T23:59:59.000Z

310

Implications of Wide-Area Geographic Diversity for Short- Term Variability of Solar Power  

E-Print Network (OSTI)

B. , 2007. Utility wind integration and operating impact2010. Western wind and solar integration study. Tech. rep. ,is commonly used in wind integration studies. Murata et

Mills, Andrew

2010-01-01T23:59:59.000Z

311

Implications of geographic diversity for short-term variability and predictability of solar power.  

E-Print Network (OSTI)

B. Parsons, “Utility wind integration and operating impactReport: 2006 Minnesota Wind Integration Study, Volume I.detailed solar and wind integration studies. V. C ONCLUSIONS

Mills, Andrew

2013-01-01T23:59:59.000Z

312

CAR Demo 3.0: Community Activity Room Visualization of Probabilistic Reliability Contours for Operator Guidance, Version 3.0  

Science Conference Proceedings (OSTI)

The Community Activity Room (CAR) Version 3.0 software visualizes the probabilistic reliability index by means of color bands in the two-dimensional operating space of a power system. EPRI developed the concept of the CAR software in the spring of 2002. It was implemented in the CAR Painter software. A demonstration software (version 1.0) was issued in September 2002. Version 2.0 was issued in March 2004. The CAR Painter includes a 2D and a 3D visualization mode. CAR 3.0 can visualize the probabilistic r...

2004-12-08T23:59:59.000Z

313

Reliability and Cost-Benefit-Based Standards for Transmission Network Operation and Design  

E-Print Network (OSTI)

...................................................................................................................... 143 Table C.3: Breakdown of transmission costs during t3 when considering all outages to single outages N-2 Deterministic security policy that refers to double outages O Operational cost #12. Probabilistic cost-benefit framework considered to replace historical deterministic N-k criteria. No changes

Catholic University of Chile (Universidad Católica de Chile)

314

Price Forecasting and Optimal Operation of Wholesale Customers in a Competitive Electricity Market.  

E-Print Network (OSTI)

??This thesis addresses two main issues: first, forecasting short-term electricity market prices; and second, the application of short-term electricity market price forecasts to operation planning… (more)

Zareipour, Hamidreza

2006-01-01T23:59:59.000Z

315

Hanford high level waste (HLW) tank mixer pump safe operating envelope reliability assessment  

DOE Green Energy (OSTI)

The US Department of Energy and its contractor, Westinghouse Corp., are responsible for the management and safe storage of waste accumulated from processing defense reactor irradiated fuels for plutonium recovery at the Hanford Site. These wastes, which consist of liquids and precipitated solids, are stored in underground storage tanks pending final disposition. Currently, 23 waste tanks have been placed on a safety watch list because of their potential for generating, storing, and periodically releasing various quantities of hydrogen and other gases. Tank 101-SY in the Hanford SY Tank Farm has been found to release hydrogen concentrations greater than the lower flammable limit (LFL) during periodic gas release events. In the unlikely event that an ignition source is present during a hydrogen release, a hydrogen burn could occur with a potential to release nuclear waste materials. To mitigate the periodic gas releases occurring from Tank 101-SY, a large mixer pump currently is being installed in the tank to promote a sustained release of hydrogen gas to the tank dome space. An extensive safety analysis (SA) effort was undertaken and documented to ensure the safe operation of the mixer pump after it is installed in Tank 101-SY.1 The SA identified a need for detailed operating, alarm, and abort limits to ensure that analyzed safety limits were not exceeded during pump operations.

Fischer, S.R. [Los Alamos National Lab., NM (United States); Clark, J. [Science and Engineering Associates, Inc., Albuquerque, NM (United States)

1993-10-01T23:59:59.000Z

316

Short-Term Load Forecasting Error Distributions and Implications for Renewable Integration Studies: Preprint  

DOE Green Energy (OSTI)

Load forecasting in the day-ahead timescale is a critical aspect of power system operations that is used in the unit commitment process. It is also an important factor in renewable energy integration studies, where the combination of load and wind or solar forecasting techniques create the net load uncertainty that must be managed by the economic dispatch process or with suitable reserves. An understanding of that load forecasting errors that may be expected in this process can lead to better decisions about the amount of reserves necessary to compensate errors. In this work, we performed a statistical analysis of the day-ahead (and two-day-ahead) load forecasting errors observed in two independent system operators for a one-year period. Comparisons were made with the normal distribution commonly assumed in power system operation simulations used for renewable power integration studies. Further analysis identified time periods when the load is more likely to be under- or overforecast.

Hodge, B. M.; Lew, D.; Milligan, M.

2013-01-01T23:59:59.000Z

317

Short-term wind speed forecasting based on a hybrid model  

Science Conference Proceedings (OSTI)

Wind power is currently one of the types of renewable energy with a large generation capacity. However, operation of wind power generation is very challenging because of the intermittent and stochastic nature of the wind speed. Wind speed forecasting ... Keywords: Forecasting, RBF neural networks, Seasonal adjustment, Wavelet transform, Wind speed

Wenyu Zhang, Jujie Wang, Jianzhou Wang, Zengbao Zhao, Meng Tian

2013-07-01T23:59:59.000Z

318

Short-Term Power Fluctuations of Large Wind Power Plants: Preprint  

DOE Green Energy (OSTI)

With electric utilities and other power providers showing increased interest in wind power and with growing penetration of wind capacity into the market, questions about how wind power fluctuations affect power system operations and about wind power's ancillary services requirements are receiving lots of attention. The project's purpose is to acquire actual, long-term wind power output data for analyzing wind power fluctuations, frequency distribution of the changes, the effects of spatial diversity, and wind power ancillary services.

Wan, Y.; Bucaneg, D.

2002-01-01T23:59:59.000Z

319

Reactive Power Management to Address Short-Term Voltage Stability Using Optimal Reactive Power Allocation Method  

Science Conference Proceedings (OSTI)

Voltage stability has attracted attention recently because power systems are increasingly operated under heavy loads and subjected to high levels of dynamic fast acting loads. Voltage instability under these conditions can be manifested as depressed voltage profiles, delayed voltage recovery at load buses following a major disturbance, and even fast voltage collapse. Single-phase, low-inertia induction motors can have adverse effect on voltage stability as they decelerate in the event of voltage ...

2012-11-28T23:59:59.000Z

320

Short-Term Shutdown Guidance for Steam Turbine-Generators and Auxiliary Systems  

Science Conference Proceedings (OSTI)

This report provides guidelines on the methods that utilities should consider to protect operating equipment when it is removed from service for short periods of time. The equipment and systems considered in this report include the steam turbine, generator, exciter, feedwater heaters, and related auxiliaries. The timeframe for this report includes outage periods from a weekend to six months. Improper layup can cause long-term equipment damage and premature failure. Increased shutdown frequency and durati...

2010-11-12T23:59:59.000Z

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Risk management considerations for seismic upgrading of an older facility for short-term residue stabilization  

Science Conference Proceedings (OSTI)

Building 707 and its addition, Building 707A, were selected, after the production mission of Rocky Flats was terminated a few years ago, to stabilize many of the plutonium residues remaining at the site by 2002. The facility had undergone substantial safety improvements to its safety systems and conduct of operations for resumption of plutonium operations in the early 1990s and appeared ideally suited for this new mission to support accelerated Site closure. During development of a new authorization basis, a seismic evaluation was performed. This evaluation addressed an unanalyzed expansion joint and suspect connection details for the precast concrete tilt-up construction and concluded that the seismic capacity of the facility is less than half of that determined by previous analysis. Further, potential seismic interaction was identified between a collapsing Building 707 and the seismically upgraded Building 707A, possibly causing the partial collapse of the latter. Both the operating contractor and the Department of Energy sought a sound technical basis for deciding how to proceed. This paper addresses the risks of the as-is facility and possible benefits of upgrades to support a decision on whether to upgrade the seismic capacity of Building 707, accept the risk of the as-is facility for its short remaining mission, or relocate critical stabilization missions. The paper also addresses the Department of Energy`s policy on natural phenomena.

Additon, S.L.; Peregoy, W.L. [TENERA Rocky Flats, LLC, Golden, CO (United States); Foppe, T.L. [Foppe and Associates, Inc., Golden, CO (United States)

1999-06-01T23:59:59.000Z

322

Web Version of the Artificial Neural Network Short Term Load Forecaster (WebANNSTLF 6.0)  

Science Conference Proceedings (OSTI)

The EPRI-developed ANNSTLF (Artificial Neural Network Short-Term Load Forecaster) is a neural-network load forecasting software system that uses historical load and weather parameters to predict future load values. EPRI has upgraded the most recent desktop version of the software (ANNSTLF 5.1) to a web-based version (WebANNSTLF 6.0). The new version, which retains almost all the functionally of ANNSTLF 5.1, features a web-based user interface that makes it possible to exploit a wide range of web services.

2007-09-17T23:59:59.000Z

323

STEMS-RT 1.0: Short-Term Electricity Market Simulator (Real Time), Demonstration Version 1.0  

Science Conference Proceedings (OSTI)

The Short-Term Electricity Market Simulator (Real Time) Demonstration Version 1.0 (STEMS-RT 1.0) allows the user to simulate simple examples of electricity markets. Description: The STEMS-RT 1.0 software is based on EPRI's pioneering development and application of agent-based simulation for the study of decision-making associated with electricity markets. In fact, the Nobel Prize in Economics was recently awarded to earlier pioneers of such investigations using people and otherwise known as experimental ...

2004-12-20T23:59:59.000Z

324

STEMS-MS v3.0, Short-Term Electricity Market Simulator - MultiSettle, Version 3.0  

Science Conference Proceedings (OSTI)

The Short-Term Electricity Market Simulator – MultiSettle (STEMS-MS), Version 3.0 software allows the user to simulate flexibly examples of electricity markets. STEMS-MS is based on EPRI's pioneering development and application of agent-based simulation for the study of decision-making associated with electricity markets. A recent Nobel Prize in Economics was awarded to earlier pioneers of this type of investigation using human subjects, which is called experimental economics. While the use of computer-...

2007-09-17T23:59:59.000Z

325

Design modification for the modular helium reactor for higher temperature operation and reliability studies for nuclear hydrogen production processes  

E-Print Network (OSTI)

Design options have been evaluated for the Modular Helium Reactor (MHR) for higher temperature operation. An alternative configuration for the MHR coolant inlet flow path is developed to reduce the peak vessel temperature (PVT). The coolant inlet path is shifted from the annular path between reactor core barrel and vessel wall through the permanent side reflector (PSR). The number and dimensions of coolant holes are varied to optimize the pressure drop, the inlet velocity, and the percentage of graphite removed from the PSR to create this inlet path. With the removal of ~10% of the graphite from PSR the PVT is reduced from 541 0C to 421 0C. A new design for the graphite block core has been evaluated and optimized to reduce the inlet coolant temperature with the aim of further reduction of PVT. The dimensions and number of fuel rods and coolant holes, and the triangular pitch have been changed and optimized. Different packing fractions for the new core design have been used to conserve the number of fuel particles. Thermal properties for the fuel elements are calculated and incorporated into these analyses. The inlet temperature, mass flow and bypass flow are optimized to limit the peak fuel temperature (PFT) within an acceptable range. Using both of these modifications together, the PVT is reduced to ~350 0C while keeping the outlet temperature at 950 0C and maintaining the PFT within acceptable limits. The vessel and fuel temperatures during low pressure conduction cooldown and high pressure conduction cooldown transients are found to be well below the design limits. The reliability and availability studies for coupled nuclear hydrogen production processes based on the sulfur iodine thermochemical process and high temperature electrolysis process have been accomplished. The fault tree models for both these processes are developed. Using information obtained on system configuration, component failure probability, component repair time and system operating modes and conditions, the system reliability and availability are assessed. Required redundancies are made to improve system reliability and to optimize the plant design for economic performance. The failure rates and outage factors of both processes are found to be well below the maximum acceptable range.

Reza, S.M. Mohsin

2007-05-01T23:59:59.000Z

326

Hawaii electric system reliability.  

SciTech Connect

This report addresses Hawaii electric system reliability issues; greater emphasis is placed on short-term reliability but resource adequacy is reviewed in reference to electric consumers' views of reliability "worth" and the reserve capacity required to deliver that value. The report begins with a description of the Hawaii electric system to the extent permitted by publicly available data. Electrical engineering literature in the area of electric reliability is researched and briefly reviewed. North American Electric Reliability Corporation standards and measures for generation and transmission are reviewed and identified as to their appropriateness for various portions of the electric grid and for application in Hawaii. Analysis of frequency data supplied by the State of Hawaii Public Utilities Commission is presented together with comparison and contrast of performance of each of the systems for two years, 2010 and 2011. Literature tracing the development of reliability economics is reviewed and referenced. A method is explained for integrating system cost with outage cost to determine the optimal resource adequacy given customers' views of the value contributed by reliable electric supply. The report concludes with findings and recommendations for reliability in the State of Hawaii.

Silva Monroy, Cesar Augusto; Loose, Verne William

2012-09-01T23:59:59.000Z

327

A Distributed Modeling System for Short-Term to Seasonal Ensemble Streamflow Forecasting in Snowmelt Dominated Basins  

SciTech Connect

This paper describes a distributed modeling system for short-term to seasonal water supply forecasts with the ability to utilize remotely-sensed snow cover products and real-time streamflow measurements. Spatial variability in basin characteristics and meteorology is represented using a raster-based computational grid. Canopy interception, snow accumulation and melt, and simplified soil water movement are simulated in each computational unit. The model is run at a daily time step with surface runoff and subsurface flow aggregated at the basin scale. This approach allows the model to be updated with spatial snow cover and measured streamflow using an Ensemble Kalman-based data assimilation strategy that accounts for uncertainty in weather forecasts, model parameters, and observations used for updating. Model inflow forecasts for the Dworshak Reservoir in northern Idaho are compared to observations and to April-July volumetric forecasts issued by the Natural Resource Conservation Service (NRCS) for Water Years 2000 – 2006. October 1 volumetric forecasts are superior to those issued by the NRCS, while March 1 forecasts are comparable. The ensemble spread brackets the observed April-July volumetric inflows in all years. Short-term (one and three day) forecasts also show excellent agreement with observations.

Wigmosta, Mark S.; Gill, Muhammad K.; Coleman, Andre M.; Prasad, Rajiv; Vail, Lance W.

2007-12-01T23:59:59.000Z

328

Determining Long-Term Performance of Cool Storage Systems from Short-Term Tests; Literature Review and Site Selection, Nov. 1997 (Revised Feb. 1998)  

E-Print Network (OSTI)

This is the preliminary report contains the literature review and site selection recommendations for ASHRAE Research Project RP 1004 — "Determining Long-term Performance of Cool Storage Systems From Short-term Tests".

Haberl, J. S.; Claridge, D. E.; Reddy, T. A.; Elleson, J.

1997-01-01T23:59:59.000Z

329

Short-Term Basin-Scale Streamflow Forecasting Using Large-Scale Coupled Atmospheric–Oceanic Circulation and Local Outgoing Longwave Radiation  

Science Conference Proceedings (OSTI)

This paper investigates the use of large-scale circulation patterns (El Niño–Southern Oscillation and the equatorial Indian Ocean Oscillation), local outgoing longwave radiation (OLR), and previous streamflow information for short-term (weekly) ...

Rajib Maity; S. S. Kashid

2010-04-01T23:59:59.000Z

330

Accuracy assessment of solar system performance projection based on short-term data acquisition as compared to seasonal results from the National Solar Data Network  

Science Conference Proceedings (OSTI)

Considerable interest has been placed on the assessment of solar thermal performance based on data acquired during short-term monitoring periods of up to two weeks time. This paper utilizes the measured long-term performance data available from the National Solar Data Network (NSDN) to assess the accuracy of projected thermal performance factors which are based on short-term data acquisition. 7 refs.

Kendall, P.W.

1981-01-01T23:59:59.000Z

331

Use of Frequency Response Metrics to Assess the Planning and Operating Requirements for Reliable Integration of Variable Renewable Generation  

E-Print Network (OSTI)

Performance of Wind Power Generation Working Group. ” IEC1971. Control of Generation and Power Flow on Interconnectedvariable renewable generation on power system reliability,

Eto, Joseph H.

2011-01-01T23:59:59.000Z

332

Core structure heat-up and material relocation in a BWR short-term station blackout accident  

Science Conference Proceedings (OSTI)

This paper presents an analytical and numerical analysis which evaluates the core-structure heat-up and subsequent relocation of molten core materials during a NWR short-term station blackout accident with ADS. A simplified one-dimensional approach coupled with bounding arguments is first presented to establish an estimate of the temperature differences within a BWR assembly at the point when structural material first begins to melt. This analysis leads to the conclusions that the control blade will be the first structure to melt and that at this point in time, overall temperature differences across the canister-blade region will not be more than 200 K. Next, a three-dimensional heat-transfer model of the canister-blade region within the core is presented that uses a diffusion approximation for the radiation heat transfer. This is compared to the one-dimensional analysis to establish its compatibility. Finally, the extension of the three-dimensional model to include melt relocation using a porous media type approximation is described. The results of this analysis suggest that under these conditions significant amounts of material will relocate to the core plate region and refreeze, potentially forming a significant blockage. The results also indicate that a large amount of lateral spreading of the melted blade and canister material into the fuel rod regions will occur during the melt progression process. 22 refs., 18 figs., 1 tab.

Schmidt, R.C.; Dosanjh, S.S.

1990-01-01T23:59:59.000Z

333

Interpretation of Strong Short-Term Central Perturbations in the Light Curves of Moderate-Magnification Microlensing Events  

E-Print Network (OSTI)

To improve the planet detection efficiency, current planetary microlensing experiments are focused on high-magnification events searching for planetary signals near the peak of lensing light curves. However, it is known that central perturbations can also be produced by binary companions and thus it is important to distinguish planetary signals from those induced by binary companions. In this paper, we analyze the light curves of microlensing events OGLE-2007-BLG-137/MOA-2007-BLG-091, OGLE-2007-BLG-355/MOA-2007-BLG-278, and MOA-2007-BLG-199/OGLE-2007-BLG-419, for all of which exhibit short-term perturbations near the peaks of the light curves. From detailed modeling of the light curves, we find that the perturbations of the events are caused by binary companions rather than planets. From close examination of the light curves combined with the underlying physical geometry of the lens system obtained from modeling, we find that the short time-scale caustic-crossing feature occurring at a low or a moderate base ...

Han, C; Kim, D; Udalski, A; Abe, F; Monard, L A B; McCormick, J; Szymanski, M K; Kubiak, M; Pietrzynski, G; Soszynski, I; Szewczyk, O; Wyrzykowski, L; Ulaczyk, K; Bond, I A; Botzler, C S; Fukui, A; Furusawa, K; Hearnshaw, J B; Itow, Y; Kamiya, K; Kilmartin, P M; Korpela, A; Lin, W; Ling, C H; Masuda, K; Matsubara, Y; Miyake, N; Muraki, Y; Nagaya, M; Ohnishi, K; Tokumura, T; Perrott, Y C; Rattenbury, N; Saito, To; Sako, T; Skuljan, L; Sullivan, D S; Sumi, T; Sweatman, W L; Tristram, P J; Yock, P C M; Allen, W; Christie, G W; DePoy, D L; Dong, S; Gaudi, B S; Gould, A; Lee, C -U; Natusch, T; Park, B -G; Pogge, R W; Albrow, M D; Allan, A; Batista, V; Beaulieu, J P; Bennett, D P; Brillant, S; Bode, M; Bramich, D M; Burgdorf, M; Caldwell, J A R; Calitz, H; Cassan, A; Corrales, E; Dieters, S; Prester, D D; Dominik, M; Donatowicz, J; Fouque, P; Greenhill, J; Hill, K; Hoffman, M; Horne, K; Jorgensen, U G; Kains, N; Kubas, D; Marquette, J B; Martin, R; Meintjes, P; Menzies, J; Pollard, K R; Sahu, K C; Snodgrass, C; Steele, I; Street, R; Tsapras, Y; Wambsganss, J; Williams, A; Zub, M

2009-01-01T23:59:59.000Z

334

Centre de Referència en Economia Analítica Barcelona Economics Working Paper Series Working Paper nº 185 Why Do Emerging Economies Borrow Short Term?  

E-Print Network (OSTI)

Barcelona Economics WP nº 185 We argue that emerging economies borrow short term due to the high risk premium charged by international capital markets on long-term debt. First, we present a model where the debt maturity structure is the outcome of a risk sharing problem between the government and bondholders. By issuing long-term debt, the government lowers the probability of a liquidity crisis, transferring risk to bondholders. In equilibrium, this risk is reflected in a higher risk premium and borrowing cost. Therefore, the government faces a trade-off between safer long-term borrowing and cheaper short-term debt. Second, we construct a new database of sovereign bond prices and issuance. We show that emerging economies pay a positive term premium (a higher risk premium on long-term bonds than on short-term bonds). During crises, the term premium increases, with issuance shifting toward shorter maturities. This suggests that changes in

O A. Broner; Guido Lorenzoni; Sergio L. Schmukler

2004-01-01T23:59:59.000Z

335

Operations Jim Irby MIT-PSFC DoE  

NLE Websites -- All DOE Office Websites (Extended Search)

Operations Operations Jim Irby MIT-PSFC DoE Quarterly 4/28/2005 Outline * Machine status and run statistics * Cryopump Development * Status of other projects * Short term plans DoE Quarterly 4/28/2005 Machine Status and Run Statistics History * C-Mod resumed plasma operation on Feb 4 th 2005 * Number of discharges so far this campaign: 684 * Startup reliability including plasma conditioning period: 75% * Startup reliability last two weeks: 87% Major Tasks * Moly/BN comparison * Commissioning of lower hybrid system * Commissioning of Long Pulse DNB DoE Quarterly 4/28/2005 Status * Pre-boronization run period complete * Vessel is now boronized with very low H/(H+D) * Lower hybrid and DNB commissioning ongoing (detailed talks to follow) * 6.75 weeks of our 17 week campaign have been completed - C-Mod Runs

336

Microbial dynamics in upflow anaerobic sludge blanket (UASB) bioreactor granules in response to short-term changes in substrate feed  

Science Conference Proceedings (OSTI)

The complexity and diversity of the microbial communities in biogranules from an upflow anaerobic sludge blanket (UASB) bioreactor were determined in response to short-term changes in substrate feeds. The reactor was fed simulated brewery wastewater (SBWW) (70% ethanol, 15% acetate, 15% propionate) for 1.5 months (phase 1), acetate / sulfate for 2 months (phase 2), acetate-alone for 3 months (phase 3), and then a return to SBWW for 2 months (phase 4). Performance of the reactor remained relatively stable throughout the experiment as shown by COD removal and gas production. 16S rDNA, methanogen-associated mcrA and sulfate reducer-associated dsrAB genes were PCR amplified, then cloned and sequenced. Sequence analysis of 16S clone libraries showed a relatively simple community composed mainly of the methanogenic Archaea (Methanobacterium and Methanosaeta), members of the Green Non-Sulfur (Chloroflexi) group of Bacteria, followed by fewer numbers of Syntrophobacter, Spirochaeta, Acidobacteria and Cytophaga-related Bacterial sequences. Methanogen-related mcrA clone libraries were dominated throughout by Methanobacter and Methanospirillum related sequences. Although not numerous enough to be detected in our 16S rDNA libraries, sulfate reducers were detected in dsrAB clone libraries, with sequences related to Desulfovibrio and Desulfomonile. Community diversity levels (Shannon-Weiner index) generally decreased for all libraries in response to a change from SBWW to acetate-alone feed. But there was a large transitory increase noted in 16S diversity at the two-month sampling on acetate-alone, entirely related to an increase in Bacterial diversity. Upon return to SBWW conditions in phase 4, all diversity measures returned to near phase 1 levels.

Kovacik, William P.; Scholten, Johannes C.; Culley, David E.; Hickey, Robert; Zhang, Weiwen; Brockman, Fred J.

2010-08-01T23:59:59.000Z

337

Seismic Activity of the Earth, the Cosmological Vectorial Potential And Method of a Short-term Earthquakes Forecasting  

E-Print Network (OSTI)

To the foundation of a principally new short-term forecasting method there has been laid down a theory of surrounding us world's creation and of physical vacuum as a result of interaction of byuons - discrete objects. The definition of the byuon contains the cosmological vector-potential A_g - a novel fundamental vector constant. This theory predicts a new anisotropic interaction of nature objects with the physical vacuum. A peculiar "tap" to gain new energy (giving rise to an earthquake) are elementary particles because their masses are proportional to the modulus of some summary potential A_sum that contains potentials of all known fields. The value of A_sum cannot be larger than the modulus of A_g. In accordance with the experimental results a new force associated with A_sum ejects substance from the area of the weakened A_sum along a conical formation with the opening of 100 +- 10 and the axis directed along the vector A_sum. This vector has the following coordinates in the second equatorial coordinate system: right ascension alpha = 293 +- 10, declination delta = 36 +- 10. Nearly 100% probability of an earthquake (earthquakes of 6 points strong and more by the Richter scale) arises when in the process of the earth rotation the zenith vector of a seismically dangerous region and/or the vectorial potential of Earth's magnetic fields are in a certain way oriented relative to the vector A_g. In the work, basic models and standard mechanisms of earthquakes are briefly considered, results of processing of information on the earthquakes in the context of global spatial anisotropy caused by the existence of the vector A_g, are presented, and an analysis of them is given.

Yu. A. Baurov; Yu. A. Baurov; Yu. A. Baurov Jr.; A. A. Spitalnaya; A. A. Abramyan; V. A. Solodovnikov

2008-08-20T23:59:59.000Z

338

Assimilation of Remote-sensing Soil Moisture in Short-term River Forecasting M. Pan1, E. F. Wood1, W. Crow2, J. Schaake3  

E-Print Network (OSTI)

Assimilation of Remote-sensing Soil Moisture in Short-term River Forecasting M. Pan1, E. F. Wood1 Hydrology and Remote Sensing Lab, US Department of Agriculture 3 National Weather Service, National Oceanic and Atmospheric Administration 1. Introduction This study focuses on evaluation of hydrologic remote sensing

Pan, Ming

339

Use of Frequency Response Metrics to Assess the Planning and Operating Requirements for Reliable Integration of Variable Renewable Generation  

E-Print Network (OSTI)

electricity (e.g. , steam turbines, combustion turbines,all be used to run a steam turbine). See Undrill (2010) forcycle plants whose steam turbines are operated with their

Eto, Joseph H.

2011-01-01T23:59:59.000Z

340

Use of Frequency Response Metrics to Assess the Planning and Operating Requirements for Reliable Integration of Variable Renewable Generation  

E-Print Network (OSTI)

operating flexibility of baseload units, faster start-up ofoperating flexibility of baseload units, faster start-up ofsystem load. At these times, baseload units are kept on line

Eto, Joseph H.

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Predicting Long-Term Performance of Photovoltaic Arrays Using Short-Term Test Data and an Annual Simulation Tool: Preprint (Revised)  

DOE Green Energy (OSTI)

We present a method of analysis for predicting annual performance of an in-situ photovoltaic (PV) array using short-term test data and an annual simulation tool. The method involves fitting data from a family of I-V curves (depicting current versus voltage) taken from a short-term test (1 to 3 day) of a PV array to a set of polynomial functions. These functions are used to predict the array's behaviour under a wide range of temperatures and irradiances. TRNSYS, driven by TMY2 weather data, is used to simulate the array's behaviour under typical weather conditions. We demonstrate this method by using results from a nominal 630-W array.

Barker, G.; Norton, P.

2003-11-01T23:59:59.000Z

342

PSTAR: Primary and secondary terms analysis and renormalization: A unified approach to building energy simulations and short-term monitoring: A summary  

DOE Green Energy (OSTI)

This report summarizes a longer report entitled PSTAR - Primary and Secondary Terms Analysis and Renormalization. A Unified Approach to Building Energy Simulations and Short-Term Monitoring. These reports highlight short-term testing for predicting long-term performance of residential buildings. In the PSTAR method, renormalized parameters are introduced for the primary terms such that the renormalized energy balance equation is best satisfied in the least squares sense; hence, the name PSTAR. Testing and monitoring the energy performance of buildings has several important applications, among them: extrapolation to long-term performance, refinement of design tools through feedback from comparing design versus actual parameters, building-as-a-calorimeter for heating, ventilating, and air conditioning (HVAC) diagnostics, and predictive load control. By combining realistic building models, simple test procedures, and analysis involving linear equations, PSTAR provides a powerful tool for analyzing building energy as well as testing and monitoring. It forms the basis for the Short-Term Energy Monitoring (STEM) project at SERI. 3 figs., 1 tab.

Subbarao, K.

1988-09-01T23:59:59.000Z

343

Operations Directorate (OPS Directorate)  

NLE Websites -- All DOE Office Websites (Extended Search)

Operations Directorate (OPS Directorate) Operations Directorate (OPS Directorate) Purpose A group chartered by the Associate Laboratory Director for the Advanced Photon Source that includes the responsible Division Directors and other appropriate APS operations personnel. The Operations Directorate collectively coordinates operating decisions that affect the facility as a whole and establishes both long- and short-term schedules, including scheduled maintenance and facility improvement periods. The Operations Directorate is the APS forum in which decisions regarding operations are discussed: These include, but are not limited to: Safety issues related to operations Operational Schedule Global operating parameters within the defined and approved operational and safety envelopes, such as energy, maximum circulating beam

344

Electricity Reliability  

NLE Websites -- All DOE Office Websites (Extended Search)

lines and bar graph Electricity Reliability The Consortium for Electric Reliability Technology Solutions (CERTS) conducts research, develops, and disseminates new methods, tools,...

345

Short-term recovery of NH4-15N applied to a temperate forest inceptisol and ultisol in east Tennessee USA  

Science Conference Proceedings (OSTI)

The short-term fate and retention of ammonium (NH4)-{sup 15}nitrogen (N) applied to two types of forest soils in east Tennessee was investigated. Four ridgetop forests, predominantly oak (Quercus spp.), were studied. Five applications of NH{sub 4}-{sup 15}N tracer were made to the forest floor at 2- to 4-week intervals over a 14-week period in 2004. Nitrogen-15 recovery in the forest floor, fine roots (100 weeks) indicated the forest floor is an effective filter for atmospheric N inputs.

Garten Jr, Charles T [ORNL; Brice, Deanne Jane [ORNL; Todd Jr, Donald E [ORNL

2007-11-01T23:59:59.000Z

346

NREL: Gearbox Reliability Collaborative - Gearbox Reliability Collaborative  

NLE Websites -- All DOE Office Websites (Extended Search)

All Members Meeting All Members Meeting The Gearbox Reliability Collaborative (GRC) All Members Meeting was held on February 4-5, 2013. The meeting covered advancements made across the NREL GRC project and the latest industry updates on gearbox reliability and operations and maintenance practices. The presentations covered gearbox design updates, gearbox testing updates, experimental data analysis, and operations and maintenance research. Presentations Monday, February 4 Time Presenter Organization Presentation 8:30 a.m. Paul Veers NREL Welcome 8:45 a.m. Mike Derby DOE Overview 9:05 a.m. Jon Keller NREL Gearbox Reliability Collaborative Status and Plans 9:20 a.m. Hal Link NREL New Gearbox #2 Test Plan 9:40 a.m. Hal Link NREL NWTC Dynos and Grid Simulator 10:00 a.m. Jon Keller/Brian McNiff NREL/MLI Gearbox Reliability Collaborative, Phase 3: High Speed Shaft Bearing Loads

347

An evaluation of the Gilian TRACEAIR Organic Vapor Monitoring Diffusive Badge in measuring short-term exposure levels of benzene under field conditions  

E-Print Network (OSTI)

The objective of this research is to evaluate the performance of the Gilian TRACEAIR Organic Vapor Monitoring I (OVMI) Diffusive Badge in measuring short-term benzene exposures under field conditions. In general, a diffusive badge is a device which is capable of taking samples of gas or vapor pollutants from the atmosphere at a rate controlled by a physical process such as diffusion through a static layer. Diffusive badges continue to flood the industrial hygiene market as an alternative means to charcoal tubes for sampling organic vapors. The OVMI badge has been on the market since 1990, and is the only diffusive sampler that offers dual sampling rates for measuring organic vapors. This dual sampling rate feature allows one the flexibility of sampling at 3 5 to I 00 mL/@n depending on the vapors being sampled. The OVM I badge has been designed to monitor short-term exposure limits (STEL) and long-term limits with only negligible modifications to the badge housing. Side-by-side benzene STEL concentrations were measured in a Texas Gulf Coast refinery implementing two OVM I badges, an SKC charcoal tube, and a Tedlar bag used for gas chromatograph analyses. The results of the study indicated that a) no significant concentration differences were found between the badges; b) the badges overestimated the charcoal tube on average by 54%, although their performance comparisons were highly predictable based on linear regression; and c) the results of the Tedlar baga?s chromatograph comparisons were inconclusive. Factors which might have contributed to the discrepancy between the charcoal tube and badges are possible concentration gradients and starvation effects occurring at the samplers' inlet face, interference from other competing vapors, and an overestimated badge sampling rate when sampling at the maximum uptake rate. Collectively, the outcomes of this research suggests that a correction factor in the badge's sampling rate might prove useful as a means of correcting for short-term overestimations when sampling for benzene under field conditions. It is hoped that the contents of this research serve as an useful aid for those specifically interested in the OVMI badge and for those whose line of work involve passive sampling.

Pierce, Mark Edward

1996-01-01T23:59:59.000Z

348

Environmental Regulations and Changes in Petroleum Refining Operations (Released in the STEO June 1998)  

Reports and Publications (EIA)

Changes in domestic refining operations are identified and related to the summer Reid vapor pressure (RVP) restrictions and oxygenate blending requirements. This analysis uses published EIA survey data and linear regression equations from the Short-Term Integrated Forecasting System (STIFS). The STIFS model is used for producing forecasts appearing in the Short-Term Energy Outlook.

Information Center

1998-06-01T23:59:59.000Z

349

Unmanned Aerial Vehicle (UAV) Dynamic-Tracking Directional Wireless Antennas for Low Powered Applications that Require Reliable Extended Range Operations in Time Critical Scenarios  

Science Conference Proceedings (OSTI)

The proven value of DOD Unmanned Aerial Vehicles (UAVs) will ultimately transition to National and Homeland Security missions that require real-time aerial surveillance, situation awareness, force protection, and sensor placement. Public services first responders who routinely risk personal safety to assess and report a situation for emergency actions will likely be the first to benefit from these new unmanned technologies. ‘Packable’ or ‘Portable’ small class UAVs will be particularly useful to the first responder. They require the least amount of training, no fixed infrastructure, and are capable of being launched and recovered from the point of emergency. All UAVs require wireless communication technologies for real- time applications. Typically on a small UAV, a low bandwidth telemetry link is required for command and control (C2), and systems health monitoring. If the UAV is equipped with a real-time Electro-Optical or Infrared (EO/Ir) video camera payload, a dedicated high bandwidth analog/digital link is usually required for reliable high-resolution imagery. In most cases, both the wireless telemetry and real-time video links will be integrated into the UAV with unity gain omni-directional antennas. With limited on-board power and payload capacity, a small UAV will be limited with the amount of radio-frequency (RF) energy it transmits to the users. Therefore, ‘packable’ and ‘portable’ UAVs will have limited useful operational ranges for first responders. This paper will discuss the limitations of small UAV wireless communications. The discussion will present an approach of utilizing a dynamic ground based real-time tracking high gain directional antenna to provide extend range stand-off operation, potential RF channel reuse, and assured telemetry and data communications from low-powered UAV deployed wireless assets.

Scott G. Bauer; Matthew O. Anderson; James R. Hanneman

2005-10-01T23:59:59.000Z

350

Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

(STEO) (STEO) Highlights  After falling by more than 40 cents per gallon from the beginning of September through mid-November, weekly U.S. average regular gasoline retail prices increased by 8 cents per gallon to reach $3.27 per gallon on December 2, 2013, due in part to unplanned refinery maintenance and higher crude oil prices. The annual average regular gasoline retail price, which was $3.63 per gallon in 2012, is expected to average $3.50 per gallon in 2013 and $3.43 per gallon in 2014.  The North Sea Brent crude oil spot price averaged near $110 per barrel for the fifth consecutive month in November. EIA expects the Brent crude oil price to average $108 per barrel in December and decline gradually to $104 per barrel in 2014. Projected West Texas

351

Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

degree-days. ** thousand cubic feet 1st 2nd 3rd 4th 1st 2nd 3rd 4th 1st 2nd 3rd 4th 2012 2013 2014 Energy Supply Crude Oil Production (a) (million barrels per day)...

352

Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

(STEO) (STEO) Highlights * Crude oil prices increased during the first three weeks of July 2013 as world oil markets tightened in the face of seasonal increases in world consumption, unexpected supply disruptions, and heightened uncertainty over the security of supply with the renewed unrest in Egypt. The U.S. Energy Information Administration (EIA) expects that the Brent crude oil spot price, which averaged $108 per barrel over the first half of 2013, will average $104 per barrel over the second half of 2013, and $100 per barrel in 2014. * The discount of West Texas Intermediate (WTI) crude oil to Brent crude oil, which averaged $18 per barrel in 2012 and increased to a monthly average of $21 per barrel in February 2013, closed below $1.50 per barrel on July 19, 2013, and averaged $3 per barrel for the

353

Short Term Energy Outlook Supplement  

U.S. Energy Information Administration (EIA)

increased impacts on offshore crude oil and natural gas producers in the Gulf of Mexico ... threaten any offshore platforms.

354

North American Electric Reliability Corporation (NERC): Reliability...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

American Electric Reliability Corporation (NERC): Reliability Considerations from the Integration of Smart Grid. NERC develops and enforces Reliability Standards; assesses...

355

Electricity Reliability  

E-Print Network (OSTI)

and reliability of the energy infrastructure, and facilitating recovery from disruptions to energy supply. MajorElectricity Delivery and Energy Reliability High Temperature Superconductivity (HTS) Visualization on the nation's energy delivery system Superconductors are important to meeting the nation's energy needs

356

Real Time Grid Reliability Management 2005  

E-Print Network (OSTI)

transmission planning to evaluate future needs under different assumptions for resource availability,transmission operators depend on to ensure system reliability. The assumption of availabilitytransmission operators depend on to ensure system reliability. The assumption of traditional governor availability

Eto, Joe

2008-01-01T23:59:59.000Z

357

Operating experience feedback report-reliability of safety-related steam turbine-driven standby pumps used in US commerical nuclear power plants  

SciTech Connect

Pump failure experience is collected by two primary means: (1) Licensee Event Reports, and (2) Nuclear Plant Reliability Data System failure reports. Certain safety-related turbine-driven standby pumps were identified by these data systems as experiencing significant ongoing repetitive failures of their turbine drivers, resulting in low reliability of the pump units. The root causes of identified failures were determined, and actions to preclude these repetitive failures were identified. 5 refs., 1 tab.

Boardman, J.R. [Nuclear Regulatory Commission, Washington, DC (United States)

1995-01-01T23:59:59.000Z

358

Comparison of MELCOR modeling techniques and effects of vessel water injection on a low-pressure, short-term, station blackout at the Grand Gulf Nuclear Station  

SciTech Connect

A fully qualified, best-estimate MELCOR deck has been prepared for the Grand Gulf Nuclear Station and has been run using MELCOR 1.8.3 (1.8 PN) for a low-pressure, short-term, station blackout severe accident. The same severe accident sequence has been run with the same MELCOR version for the same plant using the deck prepared during the NUREG-1150 study. A third run was also completed with the best-estimate deck but without the Lower Plenum Debris Bed (BH) Package to model the lower plenum. The results from the three runs have been compared, and substantial differences have been found. The timing of important events is shorter, and the calculated source terms are in most cases larger for the NUREG-1150 deck results. However, some of the source terms calculated by the NUREG-1150 deck are not conservative when compared to the best-estimate deck results. These results identified some deficiencies in the NUREG-1150 model of the Grand Gulf Nuclear Station. Injection recovery sequences have also been simulated by injecting water into the vessel after core relocation started. This marks the first use of the new BH Package of MELCOR to investigate the effects of water addition to a lower plenum debris bed. The calculated results indicate that vessel failure can be prevented by injecting water at a sufficiently early stage. No pressure spikes in the vessel were predicted during the water injection. The MELCOR code has proven to be a useful tool for severe accident management strategies.

Carbajo, J.J.

1995-06-01T23:59:59.000Z

359

Determining Long-Term Performance of Cool Storage Systems from Short-Term Tests; Literature Review, Preliminary Methodology Description, and Final Site Selection (Final Revision of Nov. 1997 Report)  

E-Print Network (OSTI)

This preliminary report contains the literature review, a preliminary description of the methodologies that have been chosen for the project and final site selection recommendations for ASHRAE Research Project RP 1004 ~ "Determining Long-term Performance of Cool Storage Systems From Short-term Tests".

Reddy, T. A.; Elleson, J.; Haberl, J. S.; Claridge, D. E.

1998-01-01T23:59:59.000Z

360

Evaluation of a cloud scale lightning data assimilation technique and a 3DVAR method for the analysis and short-term forecast of the 29 June 2012 derecho event  

Science Conference Proceedings (OSTI)

This work evaluates the short-term forecast (? 6-h) of the 29-30 June 2012 derecho event from the Weather Research and Forecast (WRF) ARW model when using two distinct data assimilation techniques at cloud resolving scales (3-km horizontal grid). ...

Alexandre O. Fierro; Jidong Gao; Conrad L. Ziegler; Edward R. Mansell; Donald R. Macgorman; Scott R. Dembek

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Interim Data Changes in the Short-term Energy Outlook Data Systems Related to Electric Power Sector and Natural Gas Demand Data Revisions (Released in the STEO December 2002)  

Reports and Publications (EIA)

Beginning with the December 2002 issue of EIAs Short-Term Energy Outlook (STEO),electricity generation and related fuel consumption totals will be presented on a basis that isconsistent with the definitions and aggregates used in the 2001 edition of EIAs Annual EnergyReview (AER). Particularly affected by these changes are the demand and balancing itemtotals for natural

Information Center

2002-12-01T23:59:59.000Z

362

Analog Integrated Circuits and Signal Processing, 42, 231–238, 2005 c ? 2005 Springer Science + Business Media, Inc. Manufactured in The Netherlands. Cascode Monolithic DC-DC Converter for Reliable Operation at High Input Voltages  

E-Print Network (OSTI)

Abstract. A cascode bridge circuit for monolithic switching DC-DC converters operating at high input voltages is proposed in this paper. The proposed circuit can also be used as an I/O buffer to interface circuits operating at significantly different voltages. The circuit technique permits the full integration of the active and passive devices of a switching DC-DC converter with a high voltage conversion ratio in a standard low voltage CMOS technology. The cascode bridge structure guarantees the reliable operation of deep submicrometer MOSFETs without exposure to high voltage stress while operating at high input and output voltages. With the proposed circuit technique, steady-state voltage differences between the terminals of all of the MOSFETs in a switching DC-DC converter are maintained within a range imposed by a target low voltage CMOS technology. High-to-low DC-DC converters operating at input voltages up to three times as high as the maximum voltage that can be directly applied across the terminals of a MOSFET are described. An efficiency of 79.6 % is achieved for 5.4 volts to 0.9 volts conversion assuming a 0.18 µm CMOS technology. The DC-DC converter operates at a switching frequency of 97 MHz while supplying a DC current of 250 mA to the load. Key Words: low voltage DC-DC converters, monolithic voltage regulators, low voltage CMOS technology, MOSFET reliability issues, high voltage stress 1.

Volkan Kursun; Siva G. Narendra; Vivek K. De; Eby G. Friedman

2004-01-01T23:59:59.000Z

363

Economic and Emergency Operations of the Storage System in a Microgrid.  

E-Print Network (OSTI)

?? Storage system is one of the critical components of the microgrid. Storage system has broad applicability in short-term and long-term operations of microgrid. Storage… (more)

Shaghayegh, Bahramirad

2012-01-01T23:59:59.000Z

364

NREL: Gearbox Reliability Collaborative - About the Gearbox Reliability  

NLE Websites -- All DOE Office Websites (Extended Search)

About the Gearbox Reliability Collaborative About the Gearbox Reliability Collaborative Premature gearbox failures have a significant impact on the cost of wind farm operations. In 2007, NREL initiated the Gearbox Reliability Collaborative (GRC). The project combines field testing, dynamometer testing, analysis, modeling, condition monitoring, development of a failure database, and operations and maintenance research in a multi-pronged approach to determine why wind turbine gearboxes do not always achieve their expected design life-the time period that manufacturers expect them to last. The collaborative of manufacturers, owners, operators, researchers, and consultants focuses on gearbox modeling and testing and the development of a gearbox failure database. Collaborative members also investigate gearbox

365

Achieving Energy Reliability TOGETHER. Achieving Energy Reliability...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Achieving Energy Reliability TOGETHER. Achieving Energy Reliability TOGETHER. 2010 STRATEGIC PLAN June 2010 TABLE OF CONTENTS OE's Declaration . . . . . . . . . . . . . . . . . . ....

366

Grid reliability management tools  

SciTech Connect

To summarize, Consortium for Electric Reliability Technology Solutions (CERTS) is engaged in a multi-year program of public interest R&D to develop and prototype software tools that will enhance system reliability during the transition to competitive markets. The core philosophy embedded in the design of these tools is the recognition that in the future reliability will be provided through market operations, not the decisions of central planners. Embracing this philosophy calls for tools that: (1) Recognize that the game has moved from modeling machine and engineering analysis to simulating markets to understand the impacts on reliability (and vice versa); (2) Provide real-time data and support information transparency toward enhancing the ability of operators and market participants to quickly grasp, analyze, and act effectively on information; (3) Allow operators, in particular, to measure, monitor, assess, and predict both system performance as well as the performance of market participants; and (4) Allow rapid incorporation of the latest sensing, data communication, computing, visualization, and algorithmic techniques and technologies.

Eto, J.; Martinez, C.; Dyer, J.; Budhraja, V.

2000-10-01T23:59:59.000Z

367

North American Electric Reliability Corporation (NERC): Reliability  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Corporation (NERC): Reliability Corporation (NERC): Reliability Considerations from the Integration of Smart Grid North American Electric Reliability Corporation (NERC): Reliability Considerations from the Integration of Smart Grid North American Electric Reliability Corporation (NERC): Reliability Considerations from the Integration of Smart Grid. NERC develops and enforces Reliability Standards; assesses adequacy annually via a ten-year forcast and winter and summer forecasts; monitors the bulk power systems; and educates, trains, and certifies industry personnel. North American Electric Reliability Corporation (NERC): Reliability Considerations from the Integration of Smart Grid More Documents & Publications Re: DOE Request for Information - Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities to

368

Power electronics reliability.  

Science Conference Proceedings (OSTI)

The project's goals are: (1) use experiments and modeling to investigate and characterize stress-related failure modes of post-silicon power electronic (PE) devices such as silicon carbide (SiC) and gallium nitride (GaN) switches; and (2) seek opportunities for condition monitoring (CM) and prognostics and health management (PHM) to further enhance the reliability of power electronics devices and equipment. CM - detect anomalies and diagnose problems that require maintenance. PHM - track damage growth, predict time to failure, and manage subsequent maintenance and operations in such a way to optimize overall system utility against cost. The benefits of CM/PHM are: (1) operate power conversion systems in ways that will preclude predicted failures; (2) reduce unscheduled downtime and thereby reduce costs; and (3) pioneering reliability in SiC and GaN.

Kaplar, Robert James; Brock, Reinhard C.; Marinella, Matthew; King, Michael Patrick; Stanley, James K.; Smith, Mark A.; Atcitty, Stanley

2010-10-01T23:59:59.000Z

369

the decision of the ReliabilityFirst Corporation (“RFC”) to include Holland Board of Public Works (“Holland”) on the NERC Compliance Registry as a Transmission Owner (“TO”) and Transmission Operator (“TOP”). Statement of Appeal  

E-Print Network (OSTI)

NERC Compliance Registry within the RFC Region for the functions of TO and TOP. Holland appeals its registration as a TO and TOP arguing that: (a) its facilities are operated as radial facilities and, therefore, fall under the exclusion of RFC’s definition of bulk electric system (“BES”) facilities; 1 (b) its facilities are not material to the BES; (c) registration of its facilities will not improve BES reliability; (d) excluding its facilities from the registry will not result in a gap in BES reliability; and (e) compliance with TO and TOP standards presents a disproportionate and undue hardship on Holland. 2 Holland serves approximately 27,000 retail and commercial customers in Holland, Michigan, as well as portions of Holland, Park, Laketown, and Fillmore townships. 3 Holland owns and operates 24 miles of 138 kV transmission lines, seven generating units (ranging from 11.5 to 83 MW) and eight high voltage substations. 4 Holland has a total of 226 MW of internal generation. 5 Holland also owns shares in the J.H. Campbell Complex and the Belle River Plant which are operated by Consumers Energy and Detroit Edison, respectively. 6

unknown authors

2010-01-01T23:59:59.000Z

370

Reliability-Centered Maintenance | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Reliability-Centered Maintenance Reliability-Centered Maintenance Reliability-Centered Maintenance October 7, 2013 - 9:48am Addthis Reliability-centered maintenance leverages the same practices and technologies of predictive maintenance. The difference is that reliability-centered maintenance recognizes that: Equipment design and operations differ Different equipment has different probabilities of failure All equipment is not of equal importance to facility operations Facilities have limited financial and personnel resources. While reliability-centered maintenance relies on predictive maintenance practices and technologies, it also recognizes that maintenance on inexpensive and/or unimportant equipment may be better served by a reactive or predictive maintenance approach. Each of the aforementioned factors are

371

Transmission Reliability | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

Transmission Reliability Transmission Reliability Transmission Reliability Modernizing America's electricity infrastructure is one of the U.S. Department of Energy's top priorities. The DOE Strategic Plan states that today's electric grid needs to be more efficient, reliable, and secure. A modern, smarter electric grid may save consumers money, help our economy run more efficiently, allow rapid growth in renewable energy sources, and enhance energy reliability. The Department's research into a variety of tools that will improve advanced system monitoring, visualization, control, operations, and market structure will ultimately modernize the electricity transmission infrastructure to ease congestion, allow for increases in demand, and provide a greater degree of security. The Transmission Reliability Program is aligned with this strategic plan

372

Virtually simulating the next generation of clean energy technologies: NETL's AVESTAR Center is dedicated to the safe, reliable and efficient operation of advanced energy plants with carbon capture  

SciTech Connect

Imagine using a real-time virtual simulator to learn to fly a space shuttle or rebuild your car's transmission without touching a piece of equipment or getting your hands dirty. Now, apply this concept to learning how to operate and control a state-of-the-art, electricity-producing power plant capable of carbon dioxide (CO{sub 2}) capture. That's what the National Energy Technology Laboratory's (NETL) Advanced Virtual Energy Simulation Training and Research (AVESTAR) Center (www.netl.doe.gov/avestar) is designed to do. Established as part of the Department of Energy's (DOE) initiative to advance new clean energy technology for power generation, the AVESTAR Center focuses primarily on providing simulation-based training for process engineers and energy plant operators, starting with the deployment of a first-of-a-kind operator training simulator for an integrated gasification combined cycle (IGCC) power plant with CO{sub 2} capture. The IGCC dynamic simulator builds on, and reaches beyond, conventional power plant simulators to merge, for the first time, a 'gasification with CO{sub 2} capture' process simulator with a 'combined-cycle' power simulator. Based on Invensys Operations Management's SimSci-Esscor DYNSIM software, the high-fidelity dynamic simulator provides realistic training on IGCC plant operations, including normal and faulted operations, as well as plant start-up, shutdown and power demand load changes. The highly flexible simulator also allows for testing of different types of fuel sources, such as petcoke and biomass, as well as co-firing fuel mixtures. The IGCC dynamic simulator is available at AVESTAR's two locations, NETL (Figure 1) and West Virginia University's National Research Center for Coal and Energy (www.nrcce.wvu.edu), both in Morgantown, W.Va. By offering a comprehensive IGCC training program, AVESTAR aims to develop a workforce well prepared to operate, control and manage commercial-scale gasification-based power plants with CO{sub 2} capture. The facility and simulator at West Virginia University promotes NETL's outreach mission by offering hands-on simulator training and education to researchers and university students.

Zitney, S.

2012-01-01T23:59:59.000Z

373

Wind Speed Forecasting for Power System Operation  

E-Print Network (OSTI)

In order to support large-scale integration of wind power into current electric energy system, accurate wind speed forecasting is essential, because the high variation and limited predictability of wind pose profound challenges to the power system operation in terms of the efficiency of the system. The goal of this dissertation is to develop advanced statistical wind speed predictive models to reduce the uncertainties in wind, especially the short-term future wind speed. Moreover, a criterion is proposed to evaluate the performance of models. Cost reduction in power system operation, as proposed, is more realistic than prevalent criteria, such as, root mean square error (RMSE) and absolute mean error (MAE). Two advanced space-time statistical models are introduced for short-term wind speed forecasting. One is a modified regime-switching, space-time wind speed fore- casting model, which allows the forecast regimes to vary according to the dominant wind direction and seasons. Thus, it avoids a subjective choice of regimes. The other one is a novel model that incorporates a new variable, geostrophic wind, which has strong influence on the surface wind, into one of the advanced space-time statistical forecasting models. This model is motivated by the lack of improvement in forecast accuracy when using air pressure and temperature directly. Using geostrophic wind in the model is not only critical, it also has a meaningful geophysical interpretation. The importance of model evaluation is emphasized in the dissertation as well. Rather than using RMSE or MAE, the performance of both wind forecasting models mentioned above are assessed by economic benefits with real wind farm data from Pacific Northwest of the U.S and West Texas. Wind forecasts are incorporated into power system economic dispatch models, and the power system operation cost is used as a loss measure for the performance of the forecasting models. From another perspective, the new criterion leads to cost-effective scheduling of system-wide wind generation with potential economic benefits arising from the system-wide generation of cost savings and ancillary services cost savings. As an illustration, the integrated forecasts and economic dispatch framework are applied to the Electric Reliability Council of Texas (ERCOT) equivalent 24- bus system. Compared with persistence and autoregressive models, the first model suggests that cost savings from integration of wind power could be on the scale of tens of millions of dollars. For the second model, numerical simulations suggest that the overall generation cost can be reduced by up to 6.6% using look-ahead dispatch coupled with spatio-temporal wind forecast as compared with dispatch with persistent wind forecast model.

Zhu, Xinxin

2013-08-01T23:59:59.000Z

374

NREL: Gearbox Reliability Collaborative - Gearbox Reliability Collaborative  

NLE Websites -- All DOE Office Websites (Extended Search)

Publications Publications Screenshot of the cover of an NREL report, titled Gearbox Reliability Collaborative Project Report: Findings from Phase 1 and Phase 2 testing. The NREL wind research program's Gearbox Reliability Collaborative publishes reports and presentations of its activities. General Gearbox Reliability Collaborative Phase 3 Gearbox 2 Test Plan 2013 DOE/NREL Gearbox Reliability Collaborative: All Members Meeting Agenda 2012 Gearbox Reliability Collaborative Phase 1 and 2: Testing and Modeling Results 2012 Gearbox Reliability Collaborative Update: A Brief (Presentation) Jan 2012 Gearbox Reliability Collaborative Update (Presentation) April 2012 NREL Collaborates to Improve Wind Turbine Technology (Fact Sheet) 2012 Gearbox Reliability Collaborative - Phase 1 and 2 Overview

375

Achieving Energy Reliability TOGETHER. Achieving Energy Reliability...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Achieving Energy Reliability TOGETHER. Achieving Energy Reliability TOGETHER. 2010 STRATEGIC PLAN June 2010 This plan reflects OE's ongoing development of a strategy to achieve the...

376

Materials Reliability Program: Characterizations of Type 316 Cold-Worked Stainless Steel Highly Irradiated Under PWR Operating Condi tions (MRP-73)  

Science Conference Proceedings (OSTI)

Irradiation-induced material degradations such as irradiation-assisted stress corrosion cracking (IASCC), irradiation-induced void swelling, and irradiation-caused embrittlement have been observed in core internals components in pressurized water reactors (PWRs). This report describes hot cell testing and characterization of a bottom-mounted instrument tube (flux thimble) that was exposed in an operating PWR for about 23 years, providing valuable data for assessing radiation effects in PWRs.

2002-08-26T23:59:59.000Z

377

Materials Reliability Program: Characterization of Type 316 Cold Worked Stainless Steel Highly Irradiated Under PWR Operating Conditions (International IASCC Advisory Committee Phase 3 Program Final Report) (MRP-214)  

Science Conference Proceedings (OSTI)

Various types of irradiation-induced material degradation such as irradiation-assisted stress corrosion cracking (IASCC), irradiation-induced void swelling, and irradiation-caused embrittlement have been observed in core internals components in pressurized water reactors (PWR). This report describes hot cell testing and characterization of bottom-mounted instrument tubes (flux thimble) that were exposed in operating PWRs for about 10 to 20 effective full power years (EFPY), providing valuable data for as...

2007-09-06T23:59:59.000Z

378

Materials Reliability Program: Evaluation of the Reactor Vessel Beltline Shell Forgings of Operating U.S. PWRs for Quasi-Laminar Indications (MRP-367)  

Science Conference Proceedings (OSTI)

In 2012, quasi-laminar indications were discovered in the beltline ring forgings of two Belgian pressurized water reactors (PWRs) during ultrasonic inspection (UT). This report assesses the implications of that discovery for U.S. reactor pressure vessels.BackgroundThe Doel 3 PWR has been operating in Belgium since 1982, Tihange 2 PWR since 1983. In 2012, UT of the ring forgings that constitute the cylindrical shells of the reactor pressure vessels (RPVs) ...

2013-11-14T23:59:59.000Z

379

Definition: Transmission Reliability | Open Energy Information  

Open Energy Info (EERE)

to ensure reliable system operation as system conditions change.1 Related Terms transmission lines, transfer capability, system, transmission line References Glossary...

380

Puget Sound Area Electric Reliability Plan : Scoping Summary Report - Part B Preliminary Technical Analysis Appendix A.  

Science Conference Proceedings (OSTI)

This report describes in general terms the nature of the voltage instability problem facing the Puget Sound area. The following two chapters cover the technical aspects of the problem. It deals with load growth, the root cause of the problem. Also addressed is the capacity of the current power system and the criteria for future system planning. It also explains the technical results of transmission system modeling which confirm the system's vulnerability to voltage instability, the principal symptom of the problem. The results of the scoping process in each of the four measure categories are presented. Included are lists of all options identified, a discussion of the screening criteria, and descriptions of the measures that survived the screening process and are proposed for further evaluation in Phase 2. We discuss the evaluation methodology which will be used to refine the analyses. The next steps in the planning process are outlined. It also describes the short term operational agreements that will assure continued reliable service until a long term solution is in place. 8 figs., 22 tabs.

United States. Bonneville Power Administration.

1991-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Substation Reliability Centered Maintenance  

SciTech Connect

Substation Reliability Centered Maintenance (RCM) is a technique that is used to develop maintenance plans and criteria so the operational capability of substation equipment is achieved, restored, or maintained. The objective of the RCM process is to focus attention on system equipment in a manner that leads to the formulation of an optimal maintenance plan. The RCM concept originated in the airline industry in the 1970s and has been used since 1985 to establish maintenance requirements for nuclear power plants. The RCM process is initially applied during the design and development phase of equipment or systems on the premise that reliability is a design characteristic. It is then reapplied, as necessary, during the operational phase to sustain a more optimal maintenance program based on actual field experiences. The purpose of the RCM process is to develop a maintenance program that provides desired or specified levels of operational safety and reliability at the lowest possible overall cost. The objectives are to predict or detect and correct incipient failures before they occur or before they develop into major defects, reduce the probability of failure, detect hidden problems, and improve the cost-effectiveness of the maintenance program. RCM accomplishes two basic purposes: (1) It identifies in real-time incipient equipment problems, averting potentially expensive catastrophic failures by communicating potential problems to appropriate system operators and maintenance personnel. (2) It provides decision support by recommending, identifying, and scheduling preventive maintenance. Recommendations are based on maintenance criteria, maintenance history, experience with similar equipment, real-time field data, and resource constraints. Hardware and software are used to accomplish these two purposes. The RCM system includes instrumentation that monitors critical substation equipment as well as computer software that helps analyze equipment data.

Purucker, S.L.

1992-11-01T23:59:59.000Z

382

Streamlined Reliability Centered Maintenance Analysis Application Update  

Science Conference Proceedings (OSTI)

A systematic evaluation of plant equipment and maintenance requirements using reliability centered maintenance (RCM) techniques can help hold down operating costs while maintaining plant availability and reliability. This report describes the application of streamlined reliability centered maintenance (streamlined RCM) methodology and software at four utilities.

2001-10-18T23:59:59.000Z

383

NREL's Gearbox Reliability Collaborative leads to wind turbine gearbox reliability, lowering the cost of energy.  

E-Print Network (OSTI)

NREL's Gearbox Reliability Collaborative leads to wind turbine gearbox reliability, lowering have been able to identify shortcomings in the design, testing, and operation of wind turbines findings are quickly shared among GRC participants, including many wind turbine manufacturers and equipment

384

North American Electric Reliability Corporation  

E-Print Network (OSTI)

Compliance filing regarding consistency of Western Electricity Coordinating Council (WECC) regional reliability Standard WECC-TOP-STD-007-0 with NERC reliability standard Dear Ms. Michael: On July 9, 2007, the North American Electric Reliability Corporation (NERC) filed an explanation regarding the consistency of WECC’s regional reliability standard WECC-TOP-STD-007-0 with respect to NERC Reliability Standard IRO-005-1. Notice of this filing was issued on July 12, 2007 with comments, protests or motions to intervene due on or before August 8, 2007. Notices of intervention and unopposed timely filed motions to intervene are granted pursuant to the operation of Rule 214 of the Commission’s Rules of Practice and Procedure (18 C.F.R. § 385.214). Any opposed or untimely filed motion to intervene is governed by the provisions of Rule 214. No protests or adverse comments were filed.

Docket No. Rr

2007-01-01T23:59:59.000Z

385

NREL: Wind Research - Gearbox Reliability Collaborative  

NLE Websites -- All DOE Office Websites (Extended Search)

Research Research Search More Search Options Site Map Premature gearbox failures have a significant impact on the cost of wind farm operations. In 2007, NREL initiated the Gearbox Reliability Collaborative (GRC). The project combines analysis, field testing, dynamometer testing, condition monitoring, and the development and population of a gearbox failure database in a multi-pronged approach to determine why many wind turbine gearboxes do not achieve their expected design life-the time period that manufacturers expect them to last. Read about: The Gearbox Reliability Collaborative Gearbox Reliability Collaborative Projects Gearbox Reliability Collaborative Research and Development Working with the Gearbox Reliability Collaborative Gearbox Reliability Collaborative Publications

386

Definition: Reliability Coordinator | Open Energy Information  

Open Energy Info (EERE)

Coordinator Coordinator Jump to: navigation, search Dictionary.png Reliability Coordinator The entity that is the highest level of authority who is responsible for the reliable operation of the Bulk Electric System, has the Wide Area view of the Bulk Electric System, and has the operating tools, processes and procedures, including the authority to prevent or mitigate emergency operating situations in both nextday analysis and real-time operations. The Reliability Coordinator has the purview that is broad enough to enable the calculation of Interconnection Reliability Operating Limits, which may be based on the operating parameters of transmission systems beyond any Transmission Operator's vision.[1] Related Terms transmission lines, Bulk Electric System, transmission line

387

Developing monthly operating rules for a cascade system of reservoirs: Application of Bayesian Networks  

Science Conference Proceedings (OSTI)

In this paper, a Bayesian Network (BN) is utilized for developing monthly operating rules for a cascade system of reservoirs which is mainly aimed to control floods and supply irrigation needs. BN is trained and verified using the results of a reservoir ... Keywords: Bayesian Networks (BNs), Long-term and short-term operation optimization, Reservoir operating rules, Varying chromosome Length Genetic Algorithm (VLGA)

Bahram Malekmohammadi; Reza Kerachian; Banafsheh Zahraie

2009-12-01T23:59:59.000Z

388

Reliability Assessment Incorporating Operational Considerations and Economic  

E-Print Network (OSTI)

. Gross, E. Litvinov and R. Coutu "Quantification of Market Performance as a Function of System Security

389

Condensate polishers add operating reliability and flexibility  

SciTech Connect

Many of today's advanced steam generators favour either an all-volatile treatment or oxygenated treatment chemistry programme, both of which require strict maintenance of an ultra-pure boiler fedwater ro condensate system. Those requirements are many times at odds with the lower-quality water sources, such as greywater, available for plant makeup and cooling water. Adding a condensate polisher can be a simple, cost-effective solution. 4 figs.

Layman, C.M.; Bennett, L.L.

2008-08-15T23:59:59.000Z

390

Secure and reliable operation of our  

E-Print Network (OSTI)

could use power plant cooling towers, for example, to disperse chem- ical or biological agents to national and international economy, security, and quality of life. Massoud Amin, Electric Power Research multiple sources, including system complexity, eco- nomic growth, deregulation, ter rorism, and even

Amin, S. Massoud

391

Electricity & Energy Reliability  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

ENERGY RELIABILITY Human Capital Management Strategic Plan FY2007 Office of Electricity Delivery and Energy Reliability Human Capital Management Strategic Plan September 2006...

392

A Review of Operations Research in Mine Planning  

Science Conference Proceedings (OSTI)

Applications of operations research to mine planning date back to the 1960s. Since that time, optimization and simulation, in particular, have been applied to both surface and underground mine planning problems, including mine design, long-and short-term ... Keywords: dispatching, equipment selection, literature review, mine design, mine planning, open-pit mining, optimization, production scheduling, simulation, underground mining

Alexandra M. Newman; Enrique Rubio; Rodrigo Caro; Andrés Weintraub; Kelly Eurek

2010-05-01T23:59:59.000Z

393

Power System Operational Planning: Challenges and Research Needs  

Science Conference Proceedings (OSTI)

The U.S.-Canada task force on the August 14, 2003 power system outage that affected 50 million people placed issues related to operational planning on the list of recommendations for improvement. This report documents the challenges that the electric power industry faces, as well as a preliminary set of research needs and a short-term action plan.

2004-12-13T23:59:59.000Z

394

APPLICATION FORM Short term course on  

E-Print Network (OSTI)

Address: Prof. Tapan K. Sengupta High Performance Computing Lab Department of Aerospace Venue : IIT Kanpur, Kanpur Organized by: High Performance Computing Lab, Dept. of Aerospace Engineering

Srivastava, Kumar Vaibhav

395

Short-Term Energy Outlook July 2013  

Gasoline and Diesel Fuel Update (EIA)

Refiner Average Crude Oil Cost 2.42 2.32 2.37 2.39 2.41 2.40 -1.2 3.7 1.3 Wholesale Gasoline Price c 2.99 3.02 3.00 2.84 2.75 2.79 -4.9 -8.9 -6.9 Wholesale Diesel Fuel Price c...

396

September 2012 Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

Highlights  Brent crude oil spot prices have increased at a relatively steady pace from their 2012 low of $89 per barrel on June 25 to their recent high of $117 per barrel on August 23 because of the seasonal tightening of oil markets and continuing unexpected production outages. EIA expects Brent crude oil prices to fall from recent highs over the rest of 2012, averaging $111 per barrel over the last 4 months of 2012 and $103 per barrel in 2013. West Texas Intermediate (WTI) crude oil spot prices rose by a more modest $17 per barrel between June 25 and August 23, as the WTI discount to Brent crude oil widened from $10 per barrel to $22 per barrel. EIA expects WTI spot prices to average

397

Short-Term World Oil Price Forecast  

Gasoline and Diesel Fuel Update (EIA)

4 4 Notes: This graph shows monthly average spot West Texas Intermediate crude oil prices. Spot WTI crude oil prices peaked last fall as anticipated boosts to world supply from OPEC and other sources did not show up in actual stocks data. So where do we see crude oil prices going from here? Crude oil prices are expected to be about $28-$30 per barrel for the rest of this year, but note the uncertainty bands on this projection. They give an indication of how difficult it is to know what these prices are going to do. Also, EIA does not forecast volatility. This relatively flat forecast could be correct on average, with wide swings around the base line. Let's explore why we think prices will likely remain high, by looking at an important market barometer - inventories - which measures the

398

Online short-term solar power forecasting  

SciTech Connect

This paper describes a new approach to online forecasting of power production from PV systems. The method is suited to online forecasting in many applications and in this paper it is used to predict hourly values of solar power for horizons of up to 36 h. The data used is 15-min observations of solar power from 21 PV systems located on rooftops in a small village in Denmark. The suggested method is a two-stage method where first a statistical normalization of the solar power is obtained using a clear sky model. The clear sky model is found using statistical smoothing techniques. Then forecasts of the normalized solar power are calculated using adaptive linear time series models. Both autoregressive (AR) and AR with exogenous input (ARX) models are evaluated, where the latter takes numerical weather predictions (NWPs) as input. The results indicate that for forecasts up to 2 h ahead the most important input is the available observations of solar power, while for longer horizons NWPs are the most important input. A root mean square error improvement of around 35% is achieved by the ARX model compared to a proposed reference model. (author)

Bacher, Peder; Madsen, Henrik [Informatics and Mathematical Modelling, Richard Pedersens Plads, Technical University of Denmark, Building 321, DK-2800 Lyngby (Denmark); Nielsen, Henrik Aalborg [ENFOR A/S, Lyngsoe Alle 3, DK-2970 Hoersholm (Denmark)

2009-10-15T23:59:59.000Z

399

Introduction 3 Short Term Opportunities 4  

E-Print Network (OSTI)

sales to commercial and industrial customers ­ Natural gas, power, oil · Power generation ­ Fossil for other fuels (engines, boilers and turbines) · Transportation (LNG and CNG) #12;Example: Hunlock Coal

400

SHORT-TERM - Energy Information Administration  

U.S. Energy Information Administration (EIA)

Analysis and Forecasting Division (202/586-5382). Macroeconomic Forecast: Energy Product Prices: ... scenario, it is assumed that, after the first

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Short-Term Energy Outlook September 2013  

Gasoline and Diesel Fuel Update (EIA)

Monthly average crude oil prices increased for the fourth consecutive month in August 2013, as supply disruptions in Libya increased and concerns over the conflict in...

402

Short-Term Dynamics of Model Errors  

Science Conference Proceedings (OSTI)

The natural instability of the atmosphere is at the origin of the rapid amplification of errors coming from the uncertainty on the initial conditions and from the imperfect representation (the model) of the atmospheric dynamics. In this paper, ...

S. Vannitsem; Z. Toth

2002-09-01T23:59:59.000Z

403

Short-Term Energy Outlook (STEO)  

U.S. Energy Information Administration (EIA)

Forecast milder temperatures than last summer contribute to a projected decline in average electricity usage per customer, which is partially offset ...

404

Short-Term Prediction of Lagrangian Trajectories  

Science Conference Proceedings (OSTI)

Lagrangian particles in a cluster are divided in two groups: observable and unobservable. The problem is to predict the unobservable particle positions given their initial positions and velocities based on observations of the observable ...

Leonid I. Piterbarg

2001-08-01T23:59:59.000Z

405

Short Term Energy Outlook, January 2003  

Gasoline and Diesel Fuel Update (EIA)

perhaps a bit below normal for the U.S. as a whole. For the month of December 2002, then, home heating fuel usage probably was not unusually high, particularly outside of the...

406

Comfort control for short-term occupancy  

E-Print Network (OSTI)

service and conserving energy in the hotel H V A C system. Osuch as hotel guests while reducing energy consumption.satisfaction and lower energy use in the hotel. The concepts

Fountain, M.; Brager, G. S.; Arens, Edward A; Bauman, Fred; Benton, C.

1994-01-01T23:59:59.000Z

407

Short-Term Natural Gas Outlook  

Reports and Publications (EIA)

Presented by: Guy F. Caruso, EIA AdministratorPresented to: CWC North American Natural Gas ConferenceHouston, TexasNovember 19, 2003

Information Center

2003-11-19T23:59:59.000Z

408

Short-Term Natural Gas Outlook  

Reports and Publications (EIA)

Presented by: Guy F. Caruso, EIA AdministratorPresented to: CBI Gas Outlook 2004 ConferenceHouston, TexasDecember 5, 2003

Information Center

2003-12-05T23:59:59.000Z

409

Reliability and Functional Availability of HVAC Systems  

E-Print Network (OSTI)

This paper presents a model to calculate the reliability and availability of heating, ventilation and air conditioning systems. The reliability is expressed in the terms of reliability, maintainability and decision capability. These terms are a function of the mean time between failure, mean time to repair and decision time. The availability is expressed as an operational and functional availability of the systems. These terms are a function of both the technical and human characteristics to maintain the systems in correct operational state. The result is based on a large amount data from operational organisations, the compulsory inspection of ventilation systems and momentary and continuous measurements made in HVAC-systems.

Myrefelt, S.

2004-01-01T23:59:59.000Z

410

2013 Reliability & Markets Peer Review | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

2013 Reliability & Markets Peer Review 2013 Reliability & Markets Peer Review 2013 Reliability & Markets Peer Review The Transmission Reliability R&D Reliability & Markets Peer Review included 13 presentations over 2 days on August 6 - 7, 2013 at Cornell University in Ithaca, NY. Presentations are available through the links. The agenda and list of presentations are included below. The Reliability and Markets activity of the Transmission Reliability program researches, develops, and implements electricity infrastructure and market simulations that integrate economics and engineering principles. The activity helps to ensure electric reliability, while also improving the efficiency and economics of market operations. Day 1: August 6 Session I Transmission Investment Assessment Under Uncertainty, Ben Hobbs,

411

Definition: Reliability Coordinator Information System | Open Energy  

Open Energy Info (EERE)

Reliability Coordinator Information System Reliability Coordinator Information System Jump to: navigation, search Dictionary.png Reliability Coordinator Information System The system that Reliability Coordinators use to post messages and share operating information in real time.[1] Related Terms Reliability Coordinator References ↑ Glossary of Terms Used in Reliability Standards An LikeLike UnlikeLike You like this.Sign Up to see what your friends like. inline Glossary Definition Retrieved from "http://en.openei.org/w/index.php?title=Definition:Reliability_Coordinator_Information_System&oldid=480407" Categories: Definitions ISGAN Definitions What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load)

412

Power electronics reliability analysis.  

SciTech Connect

This report provides the DOE and industry with a general process for analyzing power electronics reliability. The analysis can help with understanding the main causes of failures, downtime, and cost and how to reduce them. One approach is to collect field maintenance data and use it directly to calculate reliability metrics related to each cause. Another approach is to model the functional structure of the equipment using a fault tree to derive system reliability from component reliability. Analysis of a fictitious device demonstrates the latter process. Optimization can use the resulting baseline model to decide how to improve reliability and/or lower costs. It is recommended that both electric utilities and equipment manufacturers make provisions to collect and share data in order to lay the groundwork for improving reliability into the future. Reliability analysis helps guide reliability improvements in hardware and software technology including condition monitoring and prognostics and health management.

Smith, Mark A.; Atcitty, Stanley

2009-12-01T23:59:59.000Z

413

Auto reliability project  

Science Conference Proceedings (OSTI)

Reliability is defined as the probability that an item (system, subsystem, or component) performs according to specifications. When test data are sparse (such as with a new concept design), expert judgment can be used to estimate reliability. Using expert ...

Jane M. Booker; Thomas R. Bement

2002-01-01T23:59:59.000Z

414

Increasing the Reliability of Reliability Diagrams  

Science Conference Proceedings (OSTI)

The reliability diagram is a common diagnostic graph used to summarize and evaluate probabilistic forecasts. Its strengths lie in the ease with which it is produced and the transparency of its definition. While visually appealing, major long-...

Jochen Bröcker; Leonard A. Smith

2007-06-01T23:59:59.000Z

415

Architectural design for reliability  

DOE Green Energy (OSTI)

Design-for-reliability concepts can be applied to the products of the construction industry, which includes buildings, bridges, transportation systems, dams, and other structures. The application of a systems approach to designing in reliability emphasizes the importance of incorporating uncertainty in the analyses, the benefits of optimization analyses, and the importance of integrating reliability, safety, and security. 4 refs., 3 figs.

Cranwell, R.M.; Hunter, R.L.

1997-08-01T23:59:59.000Z

416

Global Nuclear Energy Partnership Fact Sheet - Establish Reliable Fuel  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Global Nuclear Energy Partnership Fact Sheet - Establish Reliable Global Nuclear Energy Partnership Fact Sheet - Establish Reliable Fuel Services Global Nuclear Energy Partnership Fact Sheet - Establish Reliable Fuel Services GNEP would build and strengthen a reliable international fuel services consortium under which "fuel supplier nations" would choose to operate both nuclear power plants and fuel production and handling facilities, providing reliable fuel services to "user nations" that choose to only operate nuclear power plants. This international consortium is a critical component of the GNEP initiative to build an improved, more proliferation-resistant nuclear fuel cycle that recycles used fuel, while Global Nuclear Energy Partnership Fact Sheet - Establish Reliable Fuel Services More Documents & Publications

417

Federal Energy Management Program: Reliability-Centered Maintenance  

NLE Websites -- All DOE Office Websites (Extended Search)

Reliability-Centered Maintenance to someone by E-mail Share Federal Energy Management Program: Reliability-Centered Maintenance on Facebook Tweet about Federal Energy Management Program: Reliability-Centered Maintenance on Twitter Bookmark Federal Energy Management Program: Reliability-Centered Maintenance on Google Bookmark Federal Energy Management Program: Reliability-Centered Maintenance on Delicious Rank Federal Energy Management Program: Reliability-Centered Maintenance on Digg Find More places to share Federal Energy Management Program: Reliability-Centered Maintenance on AddThis.com... Sustainable Buildings & Campuses Operations & Maintenance Federal Requirements Program Management Commissioning Metering Computerized Maintenance Management Systems

418

Reliability and Markets Program Information  

Energy.gov (U.S. Department of Energy (DOE))

Summary of the Tranmission Reliability program's Reliability and Markets activity area. The program helps to increase grid reliability and reduce costs for customers using integrated market and...

419

Reliability and maintainability program  

SciTech Connect

The program's goals are to accelerate the adoption of active solar energy systems in building applications by improving the reliability and maintainability of installed systems. The project is designed to accomplish this by providing the latest information; by assisting the industry in improving reliability and maintainability; by assisting in design, manufacture, installation and maintenance of reliable and durable systems; and by assisting in the development of codes and standards. Work and accomplishments in these areas are enumerated. (LEW)

Eden, A.

1981-05-01T23:59:59.000Z

420

Human Reliability Program (HRP)  

Energy.gov (U.S. Department of Energy (DOE))

Office of SecurityHRP Training Certification- HTML- Flash10 CFR 712, Human Reliability ProgramHRP HandbookTools for Clinicians- Medication List- Medical Records Checklist

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Materials Reliability Employment Opportunities  

Science Conference Proceedings (OSTI)

... from an in-house microfabrication facility that has ... well as access to other world-class NIST facilities. ... of membrane reliability is essential for ensuring ...

2012-10-15T23:59:59.000Z

422

The Development and Testing of a New Method to Evaluate the Operational Cloud-Seeding Programs in Texas  

Science Conference Proceedings (OSTI)

A method for the objective evaluation of short-term, nonrandomized operational convective cloud-seeding projects on a floating-target-area basis has been developed and tested in the context of the operational cloud-seeding projects of Texas. The ...

William L. Woodley; Daniel Rosenfeld

2004-02-01T23:59:59.000Z

423

General Aviation Aircraft Reliability Study  

Science Conference Proceedings (OSTI)

This reliability study estimates Complex General Aviation (GA) Aircraft System reliability. As part of an effort to successfully improve the safety and reliability of the next generation of GA aircraft, a benchmarking of the current reliability of GA ...

Pettit Duane; Turnbull Andrew

2001-02-01T23:59:59.000Z

424

Summary of Recommendations from NERC Reliability Readiness Evaluations  

Science Conference Proceedings (OSTI)

The North American Electric Reliability Corporation (NERC) has recently conducted a large number of reliability readiness evaluations at the sites of various transmission operators, balancing authorities, and reliability coordinators. This report summarizes the most prevalent recommendations in these evaluations, enabling entities not yet audited to better prepare by initiating improvements in emphasized recommendation areas.

2008-10-20T23:59:59.000Z

425

Multi-Area Power System Reliability and Production Costing  

Science Conference Proceedings (OSTI)

Multi-area power system operation can reduce costs without jeopardizing service reliability, but the interconnection of systems requires new means for estimating costs and reliability. This report describes methods for evaluating production costs and power system reliability in multi-area power systems.

1990-08-28T23:59:59.000Z

426

Operational Impact of QuikSCAT Winds at the NOAA Ocean Prediction Center  

Science Conference Proceedings (OSTI)

The NASA Quick Scatterometer (QuikSCAT) has revolutionized the analysis and short-term forecasting of winds over the oceans at the NOAA Ocean Prediction Center (OPC). The success of QuikSCAT in OPC operations is due to the wide 1800-km swath ...

Joan M. Von Ahn; Joseph M. Sienkiewicz; Paul S. Chang

2006-08-01T23:59:59.000Z

427

College of Electricity Delivery and Energy Reliability | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Electricity Delivery and Energy Reliability Electricity Delivery and Energy Reliability College of Electricity Delivery and Energy Reliability College of Electricity Delivery and Energy Reliability Vision OE recognizes that our Nation's sustained economic prosperity, quality of life, and global competitiveness depend on access to an abundance of secure, reliable, and affordable energy resources. Through a mix of technology and policy solutions, we will address the changing dynamics and uncertainties in which the electric system will operate. We will leverage effective partnerships, solid research, and best practices to address diverse interests in achieving economic, societal, and environmental objectives. Resources Explore the following topics at OE's College of Electricity Delivery and Energy Reliability:

428

Photovoltaic system reliability  

SciTech Connect

This paper discusses the reliability of several photovoltaic projects including SMUD`s PV Pioneer project, various projects monitored by Ascension Technology, and the Colorado Parks project. System times-to-failure range from 1 to 16 years, and maintenance costs range from 1 to 16 cents per kilowatt-hour. Factors contributing to the reliability of these systems are discussed, and practices are recommended that can be applied to future projects. This paper also discusses the methodology used to collect and analyze PV system reliability data.

Maish, A.B.; Atcitty, C. [Sandia National Labs., NM (United States); Greenberg, D. [Ascension Technology, Inc., Lincoln Center, MA (United States)] [and others

1997-10-01T23:59:59.000Z

429

NREL: Gearbox Reliability Collaborative - Gearbox Reliability Collaborative  

NLE Websites -- All DOE Office Websites (Extended Search)

Projects Projects Gearbox deficiencies are the result of many factors. Through gearbox modeling and testing, condition monitoring, and the failure database, the collaborative is expanding the industry's knowledge base, recommending efficient and cost-effective improvements, and facilitating immediate improvements in the gearbox life cycle. Gearbox Modeling and Testing Illustration of representative gearbox including the hub, main bearing, main shaft, gearbox, brake, high speed shaft, generator, and bed plate. A complete gearbox redesign has been completed in a collaborative effort between NREL and industry partners. This process documented and analyzed the design process and produced a new gearbox design that integrates knowledge from previous Gearbox Reliability Collaborative (GRC) activities.

430

Hydropower Reliability Study  

Science Conference Proceedings (OSTI)

Though hydroelectric plants are highly reliable, even a 1% improvement in their availability could save the U.S. utility industry $125 million per year. This comprehensive review of hydropower data and practices recommends ways to achieve such improvement.

1984-03-01T23:59:59.000Z

431

Accelerator Operations and Physics - Advanced Photon Source  

NLE Websites -- All DOE Office Websites (Extended Search)

Accelerator Operations & Physics Accelerator Systems Division---Argonne National Laboratory Mission Statement Safe, reliable, attentive, and responsive operation of APS accelerator...

432

Photovoltaic module reliability workshop  

DOE Green Energy (OSTI)

The paper and presentations compiled in this volume form the Proceedings of the fourth in a series of Workshops sponsored by Solar Energy Research Institute (SERI/DOE) under the general theme of photovoltaic module reliability during the period 1986--1990. The reliability Photo Voltaic (PV) modules/systems is exceedingly important along with the initial cost and efficiency of modules if the PV technology has to make a major impact in the power generation market, and for it to compete with the conventional electricity producing technologies. The reliability of photovoltaic modules has progressed significantly in the last few years as evidenced by warranties available on commercial modules of as long as 12 years. However, there is still need for substantial research and testing required to improve module field reliability to levels of 30 years or more. Several small groups of researchers are involved in this research, development, and monitoring activity around the world. In the US, PV manufacturers, DOE laboratories, electric utilities and others are engaged in the photovoltaic reliability research and testing. This group of researchers and others interested in this field were brought together under SERI/DOE sponsorship to exchange the technical knowledge and field experience as related to current information in this important field. The papers presented here reflect this effort.

Mrig, L. (ed.)

1990-01-01T23:59:59.000Z

433

Gearbox Reliability Collaborative Update (Presentation)  

SciTech Connect

This presentation was given at the Sandia Reliability Workshop in August 2013 and provides information on current statistics, a status update, next steps, and other reliability research and development activities related to the Gearbox Reliability Collaborative.

Sheng, S.

2013-10-01T23:59:59.000Z

434

Reconsideration of Software Reliability Measurements  

Science Conference Proceedings (OSTI)

In this paper, we discuss the major weaknesses of the software reliability measurements currently used and propose a new model of software reliability estimation. For the time being, the software reliability models are employed far from ubiquitous. As ...

Shiyi Xu

2007-10-01T23:59:59.000Z

435

New Switching Operator Training  

Science Conference Proceedings (OSTI)

This Technical Update report summarizes work done on a new project, launched in 2006, that is focused on the development of training materials for apprentice and new operators. The project is part of EPRI's Switching Safety and Reliability research.

2006-12-11T23:59:59.000Z

436

Nuclear Power - Control, Reliability and Human Factors  

E-Print Network (OSTI)

Advances in reactor designs, materials and human-machine interfaces guarantee safety and reliability of emerging reactor technologies, eliminating possibilities for high-consequence human errors as those which have occurred in the past. New instrumentation and control technologies based in digital systems, novel sensors and measurement approaches facilitate safety, reliability and economic competitiveness of nuclear power options. Autonomous operation scenarios are becoming increasingly popular to consider for small modular systems. This book belongs to a series of books on nuclear power published by InTech. It consists of four major sections and contains twenty-one chapters on topics from key subject areas pertinent to instrumentation and control, operation reliability, system aging and human-machine interfaces. The book targets a broad potential readership group - students, researchers and specialists in the field - who are interested in learning about nuclear power.

Tsvetkov, Pavel

2011-09-01T23:59:59.000Z

437

Feasibility of Wear and Tear Sensors for Flexible Plant Operations  

Science Conference Proceedings (OSTI)

At one time, the industry subjected only smaller, older fossil-fueled power plants to one or more cycling roles. Now even the largest U.S. units are being cycled, often doing so—-either to low load or on-off—without extensive equipment modification. However, cycling plants may cause either long-term cost penalties, such as excessive "wear and tear" costs, equipment repair and replacement costs, or decreased unit reliability / availability. Cycling also may lead to short-term cost penalties, w...

2003-12-09T23:59:59.000Z

438

Guidelines for New High Reliability Fossil Plants  

Science Conference Proceedings (OSTI)

The purity of water and steam is central to ensuring fossil plant component availability and reliability. New plants should have the optimum cycle chemistry features designed in, and the guidelines provided in this report will assist owners and operators of new plants in specifying these features during the design phase.

2007-02-26T23:59:59.000Z

439

Independent System Operators and Biomass Power  

DOE Green Energy (OSTI)

Since the Federal Energy Regulatory Commission issued its landmark open access transmission rule in 1996, the idea of creating and establishing independent system operators (ISOs) has gained momentum. ISOs may help combine individual utility transmission systems into more regional transmission networks, which ultimately will allow biomass companies to transmit power over longer distances while paying a single transmission rate. To the extent that ISOs are combined or operated with power exchanges, however, biomass companies will likely face even more competitive market pressures. Few operators have experience with ISOs and power exchanges, but preliminary results show that short-term electricity market prices are probably too low for most biomass companies to compete against. Without policy measures, biomass companies may have to pursue strategic opportunities with short-term, spot-market sales; direct bilateral sales to customers; alternative power exchanges; and perhaps a ''green'' pow er market and sales to ancillary service markets. In addition, prices will likely be more volatile in a restructured market so biomass generators should be selling during those times.

Porter, K. L.

1999-03-25T23:59:59.000Z

440

North American Electric Reliability Corporation (NERC): Ensuring...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

North American Electric Reliability Corporation (NERC): Ensuring a Reliable Bulk Electric System North American Electric Reliability Corporation (NERC): Ensuring a Reliable Bulk...

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

GNF2 Operating Experience  

Science Conference Proceedings (OSTI)

GNF's latest generation fuel product, GNF2, is designed to deliver improved nuclear efficiency, higher bundle and cycle energy capability, and more operational flexibility. But along with high performance, our customers face a growing need for absolute fuel reliability. This is driven by a general sense in the industry that LWR fuel reliability has plateaued. Too many plants are operating with fuel leakers, and the impact on plant operations and operator focus is unacceptable. The industry has responded by implementing an INPO-coordinated program aimed at achieving leaker-free reliability by 2010. One focus area of the program is the relationship between fuel performance (i.e., duty) and reliability. The industry recognizes that the right balance between performance and problem-free fuel reliability is critical. In the development of GNF2, GNF understood the requirement for a balanced solution and utilized a product development and introduction strategy that specifically addressed reliability: evolutionary design features supported by an extensive experience base; thoroughly tested components; and defense-in-depth mitigation of all identified failure mechanisms. The final proof test that the balance has been achieved is the application of the design, initially through lead use assemblies (LUAs), in a variety of plants that reflect the diversity of the BWR fleet. Regular detailed surveillance of these bundles provides the verification that the proper balance between performance and reliability has been achieved. GNF currently has GNF2 lead use assemblies operating in five plants. Included are plants that have implemented extended power up-rates, plants on one and two-year operating cycles, and plants with and without NobleChem{sup TM} and zinc injection. The leading plant has undergone three pool-side inspections outages to date. This paper reviews the actions taken to insure GNF2's reliability, and the lead use assembly surveillance data accumulated to date to validate the adequacy/expected behavior of the design. (authors)

Schardt, John [GE Energy, Nuclear, 3901 Castle Hayne Road, Wilmington, NC 28402 (United States)

2007-07-01T23:59:59.000Z

442

Gearbox Reliability Collaborative Update: A Brief (Presentation)  

DOE Green Energy (OSTI)

This presentation is an update on the Gearbox Reliability Collaborative (GRC) for the AWEA Wind Project Operations, Maintenance & Reliability Seminar. GRC accomplishments are: (1) Failure database software deployed - partners see business value for themselves and customers; (2) Designed, built, instrumented, and tested two gearboxes - (a) Generated unprecedented public domain test data from both field testing and dynamometer testing, (b) Different responses from 'identical' gearboxes, (c) Demonstrated importance of non-torque loading and modeling approach; and (3) Active collaborative, with wide industry support, leveraging DOE funding - Modeling round robin and Condition Monitoring round robin.

Sheng, S.; Keller, J.; McDade, M.

2012-01-01T23:59:59.000Z

443

Gearbox Reliability Collaborative Update: A Brief (Presentation)  

SciTech Connect

This presentation is an update on the Gearbox Reliability Collaborative (GRC) for the AWEA Wind Project Operations, Maintenance & Reliability Seminar. GRC accomplishments are: (1) Failure database software deployed - partners see business value for themselves and customers; (2) Designed, built, instrumented, and tested two gearboxes - (a) Generated unprecedented public domain test data from both field testing and dynamometer testing, (b) Different responses from 'identical' gearboxes, (c) Demonstrated importance of non-torque loading and modeling approach; and (3) Active collaborative, with wide industry support, leveraging DOE funding - Modeling round robin and Condition Monitoring round robin.

Sheng, S.; Keller, J.; McDade, M.

2012-01-01T23:59:59.000Z

444

Regulatory Commission (Commission) directs the North American Electric Reliability  

E-Print Network (OSTI)

submit to the Commission for approval proposed Reliability Standards that address the impact of geomagnetic disturbances (GMD) on the reliable operation of the Bulk-Power System. The Commission directs NERC to implement the directive in two stages. In the first stage, NERC must submit, within six months of the effective date of this Final Rule, one or more Reliability Standards that require owners and operators of the Bulk-Power System to develop and implement operational procedures to mitigate the effects of GMDs consistent with the reliable operation of the Bulk-Power System. In the second stage, NERC must submit, within 18 months of the effective date of this Final Rule, one or more Reliability Standards that require owners and operators of the Bulk-Power System to conduct initial and on-going assessments of the potential impact of benchmark GMDDocket No. RM12-22-000- 2-events on Bulk-Power System equipment and the Bulk-Power System as a whole. The Second Stage GMD Reliability Standards must identify benchmark GMD events that specify what severity GMD events a responsible entity must assess for potential impacts on the Bulk-Power System. If the assessments identify potential impacts from benchmark GMD events, the Reliability Standards should require owners and operators

Cfr Part

2013-01-01T23:59:59.000Z

445

Framework for Stochastic Reliability of Bulk Power System  

Science Conference Proceedings (OSTI)

Value-based reliability assessment is a useful aid to effective decision making about short- and long-term transmission planning and operation. This report describes efforts to develop additional functionality in EPRI's Transmission Reliability Evaluation for Large Scale Systems (TRELSS) program.

1998-03-26T23:59:59.000Z

446

Component reliability testing  

SciTech Connect

Component and system reliability of active solare energy systems continues to be a major concern of designers, manufacturers, installers, and consumers. Six test loops were constructed at the Solar Energy Research Institute in Golden, Colorado, to thermally cycle active solar energy system components. Drain valves, check valves, air vents, vacuum breakers, tempering valves, and polybutylene pipe were included in the testing. Test results show poor reliabiity of some of the components and limited performance from others. The results lead to a better understanding of certain failures in the field and present designers with realistic expectations for these components.

Farrington, R.B.

1984-03-01T23:59:59.000Z

447

Continuous Reliability Enhancement for Wind (CREW) database : wind plant reliability benchmark.  

SciTech Connect

To benchmark the current U.S. wind turbine fleet reliability performance and identify the major contributors to component-level failures and other downtime events, the Department of Energy funded the development of the Continuous Reliability Enhancement for Wind (CREW) database by Sandia National Laboratories. This report is the third annual Wind Plant Reliability Benchmark, to publically report on CREW findings for the wind industry. The CREW database uses both high resolution Supervisory Control and Data Acquisition (SCADA) data from operating plants and Strategic Power Systems' ORAPWind%C2%AE (Operational Reliability Analysis Program for Wind) data, which consist of downtime and reserve event records and daily summaries of various time categories for each turbine. Together, these data are used as inputs into CREW's reliability modeling. The results presented here include: the primary CREW Benchmark statistics (operational availability, utilization, capacity factor, mean time between events, and mean downtime); time accounting from an availability perspective; time accounting in terms of the combination of wind speed and generation levels; power curve analysis; and top system and component contributors to unavailability.

Hines, Valerie Ann-Peters; Ogilvie, Alistair B.; Bond, Cody R.

2013-09-01T23:59:59.000Z

448

Managing Electricity Reliability Risk Through the Futures Markets  

E-Print Network (OSTI)

LBNL-47645 Managing Electricity Reliability Risk Through the Futures Markets Afzal S. Siddiqui Environmental Energy Technologies Division Ernest Orlando Lawrence Berkeley National Laboratory Berkeley for Operations Research and the Management Sciences INFORMS Annual Meeting in San Antonio, TX, November 2000

449

Performance and Reliability of the Solar Progress Photovoltaic Plant  

Science Conference Proceedings (OSTI)

Amorphous silicon is presently a leading contender for cost-effective photovoltaic power generation. Findings reported here confirm that the Solar Progress experimental power plant with amorphous silicon modules operated with high reliability, and no unexpected problems arose.

1991-01-23T23:59:59.000Z

450

MPI Collective Operations over IP Multicast  

Science Conference Proceedings (OSTI)

Many common implementations of Message Passing Interface (MPI) implement collective operations over point-to-point operations. This work examines IP multicast as a framework for collective operations. IP multicast is not reliable. If a receiver is not ...

Hsiang Ann Chen; Yvette O. Carrasco; Amy W. Apon

2000-05-01T23:59:59.000Z

451

Delivering High Reliability in Heat Recovery Steam Generators  

Science Conference Proceedings (OSTI)

Despite being relatively new, the worldwide fleet of combined-cycle units with heat recovery steam generators (HRSGs) has exhibited a disappointing record with respect to reliability and availability in terms of HRSG tube failures (HTFs). This report identifies actions that—if implemented prior to commercial operation—should greatly improve the operational HRSG reliability.BackgroundWhen contemplating new combined-cycle units, the choices that can ...

2012-12-12T23:59:59.000Z

452

General Order Ensuring Reliable Electric Service (Louisiana) | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

General Order Ensuring Reliable Electric Service (Louisiana) General Order Ensuring Reliable Electric Service (Louisiana) General Order Ensuring Reliable Electric Service (Louisiana) < Back Eligibility Investor-Owned Utility Municipal/Public Utility Utility Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Louisiana Program Type Safety and Operational Guidelines Provider Louisiana Public Service Commission The standards set forth herein have been developed to provide consumers, the Louisiana Public Service Commission, and jurisdictional electric utilities with a uniform method of ensuring reliable electric service. The standards shall be applicable to the distribution systems of all electric utilities under the jurisdiction of the Louisiana Public Service

453

Real Time Grid Reliability Management 2005  

Science Conference Proceedings (OSTI)

The increased need to manage California?s electricity grid in real time is a result of the ongoing transition from a system operated by vertically-integrated utilities serving native loads to one operated by an independent system operator supporting competitive energy markets. During this transition period, the traditional approach to reliability management -- construction of new transmission lines -- has not been pursued due to unresolved issues related to the financing and recovery of transmission project costs. In the absence of investments in new transmission infrastructure, the best strategy for managing reliability is to equip system operators with better real-time information about actual operating margins so that they can better understand and manage the risk of operating closer to the edge. A companion strategy is to address known deficiencies in offline modeling tools that are needed to ground the use of improved real-time tools. This project: (1) developed and conducted first-ever demonstrations of two prototype real-time software tools for voltage security assessment and phasor monitoring; and (2) prepared a scoping study on improving load and generator response models. Additional funding through two separate subsequent work authorizations has already been provided to build upon the work initiated in this project.

Eto, Joe; Eto, Joe; Lesieutre, Bernard; Lewis, Nancy Jo; Parashar, Manu

2008-07-07T23:59:59.000Z

454

Real-Time Grid Reliability Management PIER Final Project Report  

NLE Websites -- All DOE Office Websites (Extended Search)

Real-Time Grid Reliability Management PIER Final Project Report Real-Time Grid Reliability Management PIER Final Project Report Title Real-Time Grid Reliability Management PIER Final Project Report Publication Type Report Year of Publication 2008 Authors Eto, Joseph H., Manu Parashar, Bernard C. Lesieutre, and Nancy J. Lewis Pagination 62 Date Published 12/2008 Publisher LBNL City Berkeley Keywords consortium for electric reliability technology solutions (certs), energy analysis and environmental impacts department Abstract The increased need to manage California's electricity grid in real time is a result of the ongoing transition from a system operated by vertically integrated utilities serving native loads to one operated by an independent system operator supporting competitive energy markets. During this transition period, the traditional approach to reliability management - construction of new transmission lines - has not been pursued due to unresolved issues related to the financing and recovery of transmission project costs. In the absence of investments in new transmission infrastructure, the best strategy for managing reliability is to equip system operators with better real-time information about actual operating margins so that they can better understand and manage the risk of operating closer to the edge. A companion strategy is to address known deficiencies in offline modeling tools that are needed to ground the use of improved real-time tools.

455

Consider insulation reliability  

SciTech Connect

This paper reports that when calcium silicate and two brands of mineral wool were compared in a series of laboratory tests, calcium silicate was more reliable. And in-service experience with mineral wool at a Canadian heavy crude refinery provided examples of many of the lab's findings. Lab tests, conducted under controlled conditions following industry accepted practices, showed calcium silicate insulation was stronger, tougher and more durable than the mineral wools to which it was compared. For instance, the calcium silicate insulation exhibited only some minor surface cracking when heated to 1,200[degrees]F (649[degrees]C), while the mineral wools suffered binder burnout resulting in sagging, delamination and a general loss of dimensional stability.

Gamboa (Manville Mechanical Insulations, a Div. of Schuller International Inc., Denver, CO (United States))

1993-01-01T23:59:59.000Z

456

Wind turbine reliability : a database and analysis approach.  

DOE Green Energy (OSTI)

The US wind Industry has experienced remarkable growth since the turn of the century. At the same time, the physical size and electrical generation capabilities of wind turbines has also experienced remarkable growth. As the market continues to expand, and as wind generation continues to gain a significant share of the generation portfolio, the reliability of wind turbine technology becomes increasingly important. This report addresses how operations and maintenance costs are related to unreliability - that is the failures experienced by systems and components. Reliability tools are demonstrated, data needed to understand and catalog failure events is described, and practical wind turbine reliability models are illustrated, including preliminary results. This report also presents a continuing process of how to proceed with controlling industry requirements, needs, and expectations related to Reliability, Availability, Maintainability, and Safety. A simply stated goal of this process is to better understand and to improve the operable reliability of wind turbine installations.

Linsday, James (ARES Corporation); Briand, Daniel; Hill, Roger Ray; Stinebaugh, Jennifer A.; Benjamin, Allan S. (ARES Corporation)

2008-02-01T23:59:59.000Z

457

Wind Power Reliability: Breaking Down a Barrier | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Wind Power Reliability: Breaking Down a Barrier Wind Power Reliability: Breaking Down a Barrier Wind Power Reliability: Breaking Down a Barrier June 25, 2010 - 12:16pm Addthis EnerNex Corporation is developing documentation and validating generic wind turbine and plant models that test reliability. | File photo EnerNex Corporation is developing documentation and validating generic wind turbine and plant models that test reliability. | File photo Stephen Graff Former Writer & editor for Energy Empowers, EERE The steady increase of wind power on the grid presents new challenges for power system operators charged with making sure the grid stays up and running. "We need to ensure that we are going down a path that will lead to better reliability [with wind power]," said Bob Zavadil, an executive vice

458

Reliability assessment of autonomous power systems incorporating HVDC interconnection links  

SciTech Connect

The objective of this paper is to present an improved computational method for the overall reliability assessment of autonomous power systems that may or may not contain HVdc interconnection links. This is a hybrid method based on a Monte-Carlo simulation sequential approach which incorporates an analytical approach for the reliability modeling of the HVdc transmission links. The developed models and techniques have been implemented into a computer program that can be used to simulate the operational practices and characteristics of the overall system under study efficiently and realistically. A set of reliability indices are calculated for each load-point of interest and the entire system while a set of additional indices is calculated for quantifying the reliability performance of the interconnection links under the specified operating requirements. The analysis of a practical system is also included for a number of studies representing its various operating and design characteristics.

Dialynas, E.N.; Koskolos, N.C. [National Technical Univ., Athens (Greece). Dept. of Electrical and Computer Engineering; Agoris, D. [Public Power Corp., Athens (Greece)

1996-01-01T23:59:59.000Z

459

Reducing Operations and Maintenance Costs of Nuclear Power Plant Fire Protection Programs  

Science Conference Proceedings (OSTI)

This report discusses opportunities for utilities to reduce fire protection operations and maintenance (O&M) costs. A number of these opportunities have been implemented by some utilities and can be implemented now by others. Other opportunities can be implemented in the short term with some additional development. These other opportunities are amenable to cooperative projects with costs shared by multiple utilities. There is also a group of opportunities that are probably best developed on an industry w...

1997-01-08T23:59:59.000Z

460

Lithium battery safety and reliability  

DOE Green Energy (OSTI)

Lithium batteries have been used in a variety of applications for a number of years. As their use continues to grow, particularly in the consumer market, a greater emphasis needs to be placed on safety and reliability. There is a useful technique which can help to design cells and batteries having a greater degree of safety and higher reliability. This technique, known as fault tree analysis, can also be useful in determining the cause of unsafe behavior and poor reliability in existing designs.

Levy, S.C.

1991-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Definition: Generator Operator | Open Energy Information  

Open Energy Info (EERE)

Services.1 Related Terms Interconnected Operations Service References Glossary of Terms Used in Reliability Standards An LikeLike UnlikeLike You like this.Sign Up...

462

Reliability Results of NERSC Systems  

E-Print Network (OSTI)

of various systems at NERSC. They graciously provided meReliability Results of NERSC Systems Akbar Mokhtarani,William Kramer, Jason Hick NERSC - LBNL Abstract In order to

Mokhtarani, Akbar; Petascale Data Storage Institute (PDSI)

2008-01-01T23:59:59.000Z

463

Distribution Reliability Trends and Correlations  

Science Conference Proceedings (OSTI)

Distribution reliability statistics, which measure sustained interruptions, are the primary benchmark used by utilities and regulators to identify service quality and to measure performance.

2005-11-29T23:59:59.000Z

464

DURABILITY, RELIABILITY, AND SERVICE LIFE ...  

Science Conference Proceedings (OSTI)

Kaipeng Liu, Xiaohong Gu. In practical applications of PV solar cells, long-term weathering durability and reliable performance are essential. ...

465

CERTS: Consortium for Electric Reliability Technology Solutions - Research Highlights  

Science Conference Proceedings (OSTI)

Historically, the U.S. electric power industry was vertically integrated, and utilities were responsible for system planning, operations, and reliability management. As the nation moves to a competitive market structure, these functions have been disaggregated, and no single entity is responsible for reliability management. As a result, new tools, technologies, systems, and management processes are needed to manage the reliability of the electricity grid. However, a number of simultaneous trends prevent electricity market participants from pursuing development of these reliability tools: utilities are preoccupied with restructuring their businesses, research funding has declined, and the formation of Independent System Operators (ISOs) and Regional Transmission Organizations (RTOs) to operate the grid means that control of transmission assets is separate from ownership of these assets; at the same time, business uncertainty, and changing regulatory policies have created a climate in which needed investment for transmission infrastructure and tools for reliability management has dried up. To address the resulting emerging gaps in reliability R&D, CERTS has undertaken much-needed public interest research on reliability technologies for the electricity grid. CERTS' vision is to: (1) Transform the electricity grid into an intelligent network that can sense and respond automatically to changing flows of power and emerging problems; (2) Enhance reliability management through market mechanisms, including transparency of real-time information on the status of the grid; (3) Empower customers to manage their energy use and reliability needs in response to real-time market price signals; and (4) Seamlessly integrate distributed technologies--including those for generation, storage, controls, and communications--to support the reliability needs of both the grid and individual customers.

Eto, Joseph

2003-07-30T23:59:59.000Z

466

Preliminary reliability allocation and estimation, Brayton Isotope Power System. Report 76-311851  

DOE Green Energy (OSTI)

A summary of the Brayton Isotope Power System (BIPS) from the standpoint of its potential for long and reliable operation is presented in tabular form.

Miller, L.G.

1976-06-01T23:59:59.000Z

467

Substation Configuration Reliability 1 Reliability of Substation Configurations  

E-Print Network (OSTI)

-Repairable Components," Power Learn Electric Power Engineering Education, Module PE.PAS.U15.5, 2005. #12;SubstationSubstation Configuration Reliability 1 Reliability of Substation Configurations Daniel Nack, Iowa substation, it still contains what could be described as weak points or points of failure that would lead

McCalley, James D.

468

Reliability by design in distributed power transmission networks  

Science Conference Proceedings (OSTI)

The system operator of a large power transmission network must ensure that power is delivered whenever there is demand in order to maintain highly reliable electric service. To fulfill this mandate, the system operator must procure reserve capacity to ... Keywords: Inventory theory, Networks, Optimization, Power transmission

Mike Chen; In-Koo Cho; Sean P. Meyn

2006-08-01T23:59:59.000Z

469

Reliability, Availability and Maintainability Considerations for Gas Turbine Cogeneration Systems  

E-Print Network (OSTI)

The success of a cogeneration system depends upon the system being available, i.e. operating and meeting its demands under expected environmental conditions. A high availability in turn, depends on both Reliability (indicating how often the system fails), and Maintainability (indicating how fast it can be returned to a satisfactory operating state). A low availability will adversely effect important economic criteria for the project such as Discounted Cash Flow and Payback. This paper provides a structure by which these important parameters can be addressed at the design evaluation stage. The paper discusses reliability methods and practical aspects such as installation and operation considerations, including air filtration, fuel conditioning and compressor washing.

Meher-Homji, C. B.; Focke, A. B.

1984-01-01T23:59:59.000Z

470

Towards Reliable Workflows for Designing and Operating High Performanc...  

NLE Websites -- All DOE Office Websites (Extended Search)

the use of validated rules-of-thumb in combination with a RadianceEnergyPlus-based plug-in for the popular Rhinoceros NURBS modeler. A series of Grasshopper components...

471

Toward Reliable Off Road Autonomous Vehicles Operating in Challenging Environments  

Science Conference Proceedings (OSTI)

The DARPA PerceptOR program has implemented a rigorous evaluative test program which fosters the development of field relevant outdoor mobile robots. Autonomous ground vehicles were deployed on diverse test courses throughout the USA and quantitatively ... Keywords: UAV, UGV, autonomous mobility, ladar, mobile robot, motion planning, obstacle avoidance, stereo, unmanned ground vehicle

Alonzo Kelly; Anthony Stentz; Omead Amidi; Mike Bode; David Bradley; Antonio Diaz-Calderon; Mike Happold; Herman Herman; Robert Mandelbaum; Tom Pilarski; Pete Rander; Scott Thayer; Nick Vallidis; Randy Warner

2006-05-01T23:59:59.000Z

472

Weather Normalization of Reliability Indices  

Science Conference Proceedings (OSTI)

Weather significantly increases variability of reliability indices. This project focuses on exploring statistical correlations between weather parameters and system performance indices using historical utility reliability data and weather data. Using this information, various approaches for normalizing utility performance indices for variability in weather can be developed.

2008-12-22T23:59:59.000Z

473

2004 Equipment Reliability Forum Proceedings  

Science Conference Proceedings (OSTI)

This report describes the proceedings of the EPRI 2004 Equipment Reliability Forum that was held September 13–14, 2004, in Kansas City, Missouri. This annual forum provides an opportunity for industry personnel involved in equipment reliability and related issues to exchange information and share experiences. It is structured to incorporate both formal presentations and open discussion.

2004-11-30T23:59:59.000Z

474

Boiler Reliability Optimization: Interim Guideline  

Science Conference Proceedings (OSTI)

Competitive pressures to drive costs down in the new business environment sometimes conflict with the demands of increased reliability and quality of supply. The Boiler Reliability Optimization program, which makes use of a number of applicable EPRI technologies, was developed to assess, create, and implement an effective boiler maintenance strategy for the changing business environment.

1999-11-30T23:59:59.000Z

475

Reliability Estimation for Double Containment Piping  

Science Conference Proceedings (OSTI)

Double walled or double containment piping is considered for use in the ITER international project and other next-generation fusion device designs to provide an extra barrier for tritium gas and other radioactive materials. The extra barrier improves confinement of these materials and enhances safety of the facility. This paper describes some of the design challenges in designing double containment piping systems. There is also a brief review of a few operating experiences of double walled piping used with hazardous chemicals in different industries. This paper recommends approaches for the reliability analyst to use to quantify leakage from a double containment piping system in conceptual and more advanced designs. The paper also cites quantitative data that can be used to support such reliability analyses.

L. Cadwallader; T. Pinna

2012-08-01T23:59:59.000Z

476

High reliability virtual organizations: Co-adaptive technology and organizational structures in tsunami warning systems  

Science Conference Proceedings (OSTI)

Highly reliable organizations (HROs) are those organizations, which by nature or design, cannot or must not fail; the consequences of failure in such systems are usually catastrophic. Systems that combine the characteristics of highly reliable operations ... Keywords: Organizational structures, communication, computer-human interaction, crisis management, disaster management, disaster response, high reliability organizations, technology, tsunami warning systems, virtual organizations

Martha Grabowski; Karlene Roberts

2011-12-01T23:59:59.000Z

477

Reliability-based design optimization using efficient global reliability analysis.  

Science Conference Proceedings (OSTI)

Finding the optimal (lightest, least expensive, etc.) design for an engineered component that meets or exceeds a specified level of reliability is a problem of obvious interest across a wide spectrum of engineering fields. Various methods for this reliability-based design optimization problem have been proposed. Unfortunately, this problem is rarely solved in practice because, regardless of the method used, solving the problem is too expensive or the final solution is too inaccurate to ensure that the reliability constraint is actually satisfied. This is especially true for engineering applications involving expensive, implicit, and possibly nonlinear performance functions (such as large finite element models). The Efficient Global Reliability Analysis method was recently introduced to improve both the accuracy and efficiency of reliability analysis for this type of performance function. This paper explores how this new reliability analysis method can be used in a design optimization context to create a method of sufficient accuracy and efficiency to enable the use of reliability-based design optimization as a practical design tool.

Bichon, Barron J. (Southwest Research Institute, San Antonio, TX); Mahadevan, Sankaran (Vanderbilt University, Nashville, TN); Eldred, Michael Scott

2010-05-01T23:59:59.000Z

478

Photovoltaic performance and reliability workshop  

DOE Green Energy (OSTI)

This workshop was the sixth in a series of workshops sponsored by NREL/DOE under the general subject of photovoltaic testing and reliability during the period 1986--1993. PV performance and PV reliability are at least as important as PV cost, if not more. In the US, PV manufacturers, DOE laboratories, electric utilities, and others are engaged in the photovoltaic reliability research and testing. This group of researchers and others interested in the field were brought together to exchange the technical knowledge and field experience as related to current information in this evolving field of PV reliability. The papers presented here reflect this effort since the last workshop held in September, 1992. The topics covered include: cell and module characterization, module and system testing, durability and reliability, system field experience, and standards and codes.

Mrig, L. [ed.

1993-12-01T23:59:59.000Z

479

Low-temperature thermal energy storage program annual operating plan  

DOE Green Energy (OSTI)

The LTTES program operating plans for FY 1978 are described in terms of general program objectives and the technical activities being implemented to achieve these objectives. The program structure provides emphasis on several principal thrusts; namely, seasonal thermal storage, daily/short-term thermal storage, and waste heat recovery and reuse. A work breakdown structure (WBS) organizes the efforts being carried out in-house or through subcontract within each thrust area. Fiscal data are summarized in respect to thrust area, individual efforts, and funding source.

Hoffman, H. W.; Eissenberg, D. M.

1979-01-01T23:59:59.000Z

480

North American Electric Reliability Council Power Outage Update |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Power Outage Update Power Outage Update North American Electric Reliability Council Power Outage Update The bulk electric transmission system in the United States and Canada has been restored and is operating reliably. Many of the generating units that tripped off line during the outage have returned to service and additional generating units are expected to return to service over the weekend. Virtually all customers have been returned to electric service, although some customers will continue to experience rotating outages due to generating capacity availability. North American Electric Reliability Council Power Outage Update More Documents & Publications Electric System Update: Sunday August 17, 2003 North American Electric Reliability Council Outage Announcement NORTH AMERICAN ELECTRIC RELIABILITY COUNCIL: Preliminary Disturbance Report

Note: This page contains sample records for the topic "reliable short-term operation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

An Overview of the Reliability and Availability Data System (RADS)  

SciTech Connect

The Reliability and Availability Data System (RADS) is a database and analysis code, developed by the Idaho National Engineering and Environmental Laboratory (INEEL) for the U.S. Nuclear Regulatory Commission (USNRC). The code is designed to estimate industry and plant-specific reliability and availability parameters for selected components in risk-important systems and initiating events for use in risk-informed applications. The RADS tool contains data and information based on actual operating experience from U.S. commercial nuclear power plants. The data contained in RADS is kept up-to-date by loading the most current quarter's Equipment Performance and Information Exchange (EPIX) data and by yearly lods of initiating event data from licensee event reports (LERS). The reliability parameters estimated by RADS are (1) probability of failure on demand, (2) failure rate during operation (used to calculate failure to run probability) and (3) time trends in reliability parameters.

T. E. Wierman; K. J. Kvarfordt; S. A. Eide; D. M. Rasmuson

2005-09-01T23:59:59.000Z

482

Strategic Insights on Security, Quality, Reliability, and Availability  

Science Conference Proceedings (OSTI)

This report provides security criteria and performance metrics for assessing the electric power system. It is part of a larger project on the strategy for managing security, quality, reliability, and availability (SQRA) performance of electric power systems. The main focus of this update is measurement of the security component. It also addresses emerging North American Electric Reliability Council (NERC) operating and planning standards and their roles in managing SQRA performance. This report is intend...

2005-03-31T23:59:59.000Z

483

Fuel Reliability Program: EPRI PCI Guidelines Support Analyses  

Science Conference Proceedings (OSTI)

In 2008, the Electric Power Research Institute (EPRI) issued a series of fuel reliability guideline reports in support of the Institute of Nuclear Power Operations (INPOs) Zero by 2010 initiative. For the development of Fuel Reliability Guidelines: Pellet-Cladding Interaction (1015453), the fuel vendorsAREVA, GNF, and Westinghouseprovided considerable proprietary information. This report serves as a reference that supplements report 1015453 and provides details on AREVA PWR and BWR fuel.

2009-05-19T23:59:59.000Z

484

Fuel Reliability Program: EPRI PCI Guidelines Support Analyses  

Science Conference Proceedings (OSTI)

In 2008, the Electric Power Research Institute (EPRI) issued a series of fuel reliability guideline reports in support of the Institute of Nuclear Power Operations (INPOs) Zero by 2010 initiative. For the development of Fuel Reliability Guidelines: Pellet-Cladding Interaction (1015453), the fuel vendorsAREVA, GNF, and Westinghouseprovided considerable proprietary information. This report serves as a reference that supplements report 1015453 and provides details on Westinghouse PWR and BWR fuel.

2009-05-19T23:59:59.000Z

485