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Note: This page contains sample records for the topic "large power time-of-day" from the National Library of EnergyBeta (NLEBeta).
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1

Energy Productivity Via Time-of-Day Rates  

E-Print Network (OSTI)

Prompted by a combination of PURPA and a national concern about electricity price and supply, many utilities now have in place industrial time-of-day electric rates. When properly designed, these rates present an opportunity for energy-intensive industrial customers to lower their cost of power while at the same time improving the load characteristics of their utility supplier. This paper examines the present state of time-of-day rates and discusses steps that Air Products is taking to maximize their electric use productivity.

Michael, R. S.

1984-01-01T23:59:59.000Z

2

THE RESIDENTIAL DEMAND FOR ELECTRICITY BY TIME-OF-DAY .  

E-Print Network (OSTI)

??The use of time-of-day (TOD) pricing as a load management tool for electric utilities has recently gained wide interest. Although utilities have successfully used TOD (more)

Ott, Deborah Ann

1980-01-01T23:59:59.000Z

3

Puerto Rico time-of-day rates demonstration. Final report  

SciTech Connect

The Puerto Rico Time of Day (TOD) electric rate demonstration project consists of three distinct studies: (A) Low usage customers (less than or equal to425 kWh per 30 consecutive days) are compared for a 12 hours peak period rate, against a control group of similar usage. (B) High usage customers (>425 kWh per 30 consecutive days) are assigned a single 12 hours peak period experimental rate. (C) High usage customers, assigned to a number of different experimental rates and compared against a control group (also used for B). For this group, peak period lengths are fixed at a specific six hour period and rates are allowed to vary. For comparative purposes a control group is included. As part of this experiment an entry and exit survey have been designed. The purpose of the surveys is to find out the changes in electric consumption stock and life style of the participants from the start to the end of the project. As participants were assigned to rates or control groups on a random basis, the emphasis of the entry survey analysis is to determine if there are any significant statistical differences among the selected participants.

1985-01-01T23:59:59.000Z

4

Incentive payments in time-of-day electricity pricing experiments: the Arizona experience  

SciTech Connect

Time-of-day (TOD) demonstration projects have produced some of the most relevant evidence on the cost and benefit of TOD in the residential sector. The authors clarify an earlier analysis of Arizona's incentive scheme and find that homeowners treated the payments differently from regular income, but did not make significant shifts in total consumption as a result of TOD. 11 references, 6 tables. (DCK)

Hill, D.H.; Ott, D.A.; Taylor, L.D.; Walker, J.M.

1983-02-01T23:59:59.000Z

5

Impacts of time-of-day on average electricity prices and utility load factors  

SciTech Connect

A degree of rationalism is brought to the rate debate between marginalist time of day advocates and embedded cost traditionalists by an empirical analysis. Studies show that neither side can claim victory. The results show that blanket statements cannot be made concerning the impacts of TOD in demand and load factor, and that rates reduce only slightly. This paper summarizes the impacts of marginal cost TOD rates on peak demand, generation, load factor, and the average price of electricity. The methodology includes calculation of marginal cost, prediction of effect of TOD on load shapes by means of a Load Curve Forecasting model, and a production costing model. A matrix shows that impacts of TOD rates on individual utilities will depend on the specific utility customer mix, load shape, and generation mix.

Chamberlin, J.H.; Dickson, C.T.; Spann, R.M.

1982-06-01T23:59:59.000Z

6

Large-Scale Offshore Wind Power  

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

Large-Scale Offshore Wind Power in the United States EXECUTIVE SUMMARY September 2010 NOTICE This report was prepared as an account of work sponsored by an agency of the United...

7

Intelligent Power Management Over Large Clusters  

Science Conference Proceedings (OSTI)

There is a growing tension within large organisations such as universities between the desire to perform vast amounts of computational processing and the desire to reduce power consumption by switching off computers. This situation will only worsen as ... Keywords: power management, condor, green computing

A. Stephen McGough; Clive Gerrard; Paul Haldane; Dave Sharples; Dan Swan; Paul Robinson; Sindre Hamlander; Stuart Wheater

2010-12-01T23:59:59.000Z

8

Kentucky Power Co (Kentucky) | Open Energy Information  

Open Energy Info (EERE)

Kentucky Power Co Kentucky Power Co Place Kentucky Utility Id 22053 References EIA Form EIA-861 Final Data File for 2010 - File2_2010[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png LGS - Large General Service Secondary Commercial LGS-TOD - Large General Service Time of Day Commercial MGS - Medium General Service Secondary Commercial MGSTOD - Medium General Service Time of Day Commercial QP - Quantity Power Secondary Commercial RS - Residential Service Residential RS-LM-TOD - Residential Service Load management Time of Day Residential RS-TOD - Residential Service Time of Day Residential RS-TOD2 - Residential Service Time of Day 2 Residential

9

Electric Utility Rate Design Study: embedded generation costs on a time-of-day basis for Iowa Southern Utilities Company  

SciTech Connect

This report develops a method for determining average embedded generation costs on a time-of-day basis and describes the application of the method to Iowa Southern Utilities. These costs are not allocated to customer classes. Since average embedded costs are composed of the running (or variable) costs and the capital costs, the analysis examines each of these separately. Running costs on a time-of-day basis are determined through the use of a generation dispatch model that reports the loadings by generating unit and the running costs of meeting the load. These costs are reported on an hour-by-hour basis. The dispatch model takes into account the operating characteristics of each unit and the major engineering constraints on a system; e.g., must-run units, minimum up and down time, startup cost. After reviewing several suggested capital-cost allocation procedures, a method is developed that allocates capital costs on a time-of-day basis by using a recontracting-for-capacity procedure that allows capacity to vary by hour for each month. The method results in allocations to customers who benefit from its use. An important and distinguishing feature of this method is that it allows calculation of the costs before rating periods are chosen.

1980-01-01T23:59:59.000Z

10

Variable-response model of electricity demand by time of day: Results of a Wisconsin pricing experiment: Final report  

Science Conference Proceedings (OSTI)

Observationally alike households may differ in demand parameters and thus in economic quantities that are functions of those parameters. We have proposed a methodology for dealing with this variation. Estimation of both translog and CES versions of the model with data from the Wisconsin Electricity Pricing Experiment revealed considerable variation among households in time-of-day electricity consumption demand parameters for both summer and winter seasons and for several different definitions of the peak period. Observed household characteristics explained only a small share of total household differences, but permanent household differences dominated month-to-month variation in either expenditure shares or log consumption ratios in most cases. Permanent differences among households are important relative to total variation, including transitory month-to-month variation. We calculated various economic variables from the demand parameters, including the partial elasticity of substitution, compensated and uncompensated elasticities, and a measure of electricity expenditure under peak load pricing required to maintain the utility level under flat rate pricing relative to the flat rate expenditure. Because these are nonlinear functions of the household demand parameters, the mean parameter value over households with different demand parameters may be substantially different from the value of the function at mean values, under the representative household paradigm. For time-of-day electricity demand, variation among households is significant but small relative to mean parameter values. Therefore, controlling for the effect of household variation makes little difference in these mean calculations, but it does imply substantial variation among households in the welfare implications (and elasticities of response) of the introduction of time-of-day pricing. 25 refs., 12 tabs.

Lillard, L.

1987-06-01T23:59:59.000Z

11

Large-Scale Eucalyptus Energy Farms and Power Cogeneration1  

E-Print Network (OSTI)

Large-Scale Eucalyptus Energy Farms and Power Cogeneration1 Robert C. Noronla2 The initiation of a large-scale cogeneration project, especially one that combines construction of the power generation supplemental fuel source must be sought if the cogeneration facility will consume more fuel than

Standiford, Richard B.

12

Mandatory Green Power Option for Large Municipal Utilities | Department of  

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

Green Power Option for Large Municipal Utilities Green Power Option for Large Municipal Utilities Mandatory Green Power Option for Large Municipal Utilities < Back Eligibility Municipal Utility Savings Category Bioenergy Alternative Fuel Vehicles Hydrogen & Fuel Cells Water Buying & Making Electricity Solar Wind Program Info State Colorado Program Type Mandatory Utility Green Power Option Provider Colorado Public Utilities Commission Municipal electric utilities serving more than 40,000 customers in Colorado must offer an optional green-power program that allows retail customers the choice of supporting emerging renewable technologies. This policy complements Colorado's renewable portfolio standard (RPS), which requires municipal utilities serving more than 40,000 customers to use renewable energy and energy recycling to account for 10% of retail sales by 2020.

13

Online Monitoring Technical Basis and Analysis Framework for Large Power  

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

for Large for Large Power Transformers; Interim Report for FY 2012 Online Monitoring Technical Basis and Analysis Framework for Large Power Transformers; Interim Report for FY 2012 The Light Water Reactor Sustainability Program is a research, development, and deployment program sponsored by the U.S. Department of Energy Office of Nuclear Energy. The program is operated in collaboration with the Electric Power Research Institute's (EPRI's) research and development efforts in the Long-Term Operations (LTO) Program. The LTO Program is managed as a separate technical program operating in the Plant Technology Department of the EPRI Nuclear Power Sector with the guidance of an industry advisory Integration Committee. Because both the Department of Energy Office of Nuclear Energy and EPRI conduct research and development in technologies

14

Large Power Transformers and the U.S. Electric Grid  

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

Infrastructure Security and Energy Restoration Infrastructure Security and Energy Restoration Office of Electricity Delivery and Energy Reliability U.S. Department of Energy LARGE POWER TRANSFORMERS AND THE U.S. ELECTRIC GRID Large Power Transformers and the U.S. Electric Grid i This page intentionally left blank. Large Power Transformers and the U.S. Electric Grid DOE / OE / ISER June 2012 ii FOR FURTHER INFORMATION This report was prepared by the Office of Electricity Delivery and Energy Reliability under the direction of Patricia Hoffman, Assistant Secretary, and William Bryan, Deputy Assistant Secretary. Specific questions about information in this report may be directed to Dr. Kenneth Friedman, Senior Policy Advisor (kenneth.friedman@hq.doe.gov). Tiffany Y. Choi of ICF International contributed to this report.

15

Limits to the power density of very large wind farms  

E-Print Network (OSTI)

A simple analysis is presented concerning an upper limit of the power density (power per unit land area) of a very large wind farm located at the bottom of a fully developed boundary layer. The analysis suggests that the limit of the power density is about 0.38 times $\\tau_{w0}U_{F0}$, where $\\tau_{w0}$ is the natural shear stress on the ground (that is observed before constructing the wind farm) and $U_{F0}$ is the natural or undisturbed wind speed averaged across the height of the farm to be constructed. Importantly, this implies that the maximum extractable power from such a very large wind farm will not be proportional to the cubic of the wind speed at the farm height, or even the farm height itself, but be proportional to $U_{F0}$.

Nishino, Takafumi

2013-01-01T23:59:59.000Z

16

PEP-II Large Power Supplies Rebuild Program at SLAC  

SciTech Connect

Seven large power supplies (LGPS) with output ratings from 72kW to 270kW power PEP-II quad magnets in the electron-positron collider region. These supplies have posed serious maintenance and reliability problems since they were installed in 1997, resulting in loss of accelerator availability. A redesign/rebuild program was undertaken by the SLAC Power Conversion Department. During the 2004 summer shutdown all the control circuits in these supplies were redesigned and replaced. A new PWM control board, programmable logic controller, and touch panel have been installed to improve LGPS reliability, and to make troubleshooting easier. In this paper we present the details of this rebuilding program and results.

Bellomo, P.; Lipari, J.J.; de Lira, A.C.; Rafael, F.S.; /SLAC

2005-05-17T23:59:59.000Z

17

Idaho Power - Large Commercial Custom Efficiency Program | Department of  

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

Large Commercial Custom Efficiency Program Large Commercial Custom Efficiency Program Idaho Power - Large Commercial Custom Efficiency Program < Back Eligibility Agricultural Commercial Industrial Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Manufacturing Other Appliances & Electronics Commercial Lighting Lighting Maximum Rebate Commercial and Industrial: 70% of project cost Custom Incentive for Existing Irrigation System Replacement: up to 75% of the total project cost Custom Incentive for a New Irrigation System: up to 10% of the total project cost Program Info Funding Source Conservation Program Funding Charge State Idaho Program Type Utility Rebate Program Rebate Amount Commercial and Industrial: $0.12/kWh saved Agricultural Irrigation Efficiency: $0.25/annual kWh saved or $450/kW

18

Use of superconductive technology for energy storage and power transmission for large power systems: power parks  

DOE Green Energy (OSTI)

A general review and technology assessment of superconducting magnets for energy storage and superconducting cables for power transmission are presented. It is concluded that the technology is now available for applying superconductivity in the power industry. (TFD)

Keller, W.E.

1977-01-01T23:59:59.000Z

19

Large-Scale Data Challenges in Future Power Grids  

Science Conference Proceedings (OSTI)

This paper describes technical challenges in supporting large-scale real-time data analysis for future power grid systems and discusses various design options to address these challenges. Even though the existing U.S. power grid has served the nation remarkably well over the last 120 years, big changes are in the horizon. The widespread deployment of renewable generation, smart grid controls, energy storage, plug-in hybrids, and new conducting materials will require fundamental changes in the operational concepts and principal components. The whole system becomes highly dynamic and needs constant adjustments based on real time data. Even though millions of sensors such as phase measurement units (PMUs) and smart meters are being widely deployed, a data layer that can support this amount of data in real time is needed. Unlike the data fabric in cloud services, the data layer for smart grids must address some unique challenges. This layer must be scalable to support millions of sensors and a large number of diverse applications and still provide real time guarantees. Moreover, the system needs to be highly reliable and highly secure because the power grid is a critical piece of infrastructure. No existing systems can satisfy all the requirements at the same time. We examine various design options. In particular, we explore the special characteristics of power grid data to meet both scalability and quality of service requirements. Our initial prototype can improve performance by orders of magnitude over existing general-purpose systems. The prototype was demonstrated with several use cases from PNNLs FPGI and was shown to be able to integrate huge amount of data from a large number of sensors and a diverse set of applications.

Yin, Jian; Sharma, Poorva; Gorton, Ian; Akyol, Bora A.

2013-03-25T23:59:59.000Z

20

Southwestern Electric Power Co (Louisiana) | Open Energy Information  

Open Energy Info (EERE)

Southwestern Electric Power Co Southwestern Electric Power Co Place Louisiana Utility Id 17698 References Energy Information Administration.[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Electric Sign Service Applicable Commercial General Lighting and Power Service Commercial General Service Commercial General Service Commercial Large General Power Service - Off Peak Commercial Large Lighting and Power Service Commercial Lighting and Power Service - Primary Service Commercial Lighting and Power Service - Secondary Service Commercial Lighting and Power Service Time of Day Industrial Lighting and Power Service Time of Day - Primary Service Industrial ML-1 - Closed Offerings - 1000 Candle Power Incandescent Lighting

Note: This page contains sample records for the topic "large power time-of-day" 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

Plant Support Engineering: Guidance for Planned Replacement of Large Power Transformers at Nuclear Power Plants  

Science Conference Proceedings (OSTI)

Utilities continue to pursue license renewal applications and power uprates, and these initiatives are being undertaken on an aging fleet of nuclear plants. Many plants are facing the necessity of replacing large power transformers to support these initiatives. However, industry expertise to support such activities has diminished since the days of plant construction8212there are fewer qualified vendors and equipment manufacturers, materials and standards might have changed, and licensees are typically no...

2007-11-02T23:59:59.000Z

22

A LARGE-SCALE SHOCK SURROUNDING A POWERFUL RADIO GALAXY?  

Science Conference Proceedings (OSTI)

We report Chandra evidence for a 200 kpc scale shock in the cluster surrounding the powerful radio galaxy 3C 444. Our 20 ks observation allows us to identify a clear surface brightness drop around the outer edge of the radio galaxy, which is likely to correspond to a spheroidal shock propagating into the intracluster medium. We measure a temperature jump across this drop of a factor {approx}1.7, which corresponds to a Mach number of {approx}1.7. This is likely to be an underestimate due to the need to average over fairly large regions. We also detect clear cavities corresponding to the positions of the radio lobes, which is only the second such detection associated with an FRII radio galaxy. We estimate that the total energy transferred to the environment is >8.2 x 10{sup 60} erg, corresponding to a jet power >2.9 x 10{sup 45} erg s{sup -1}. Our results suggest that energy input from FRII radio galaxies is likely to exceed substantially estimates based on cluster cavity scaling relations.

Croston, J. H. [School of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ (United Kingdom); Hardcastle, M. J.; Mingo, B. [School of Physics, Astronomy and Mathematics, University of Hertfordshire, Hatfield, Hertfordshire, AL10 9AB (United Kingdom); Evans, D. A. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Dicken, D. [Department of Physics and Astronomy, Rochester Institute of Technology, 84 Lomb Memorial Drive, Rochester, NY 14623 (United States); Morganti, R. [Netherlands Institute for Radio Astronomy, Postbus 2, 7990 AA, Dwingeloo (Netherlands); Tadhunter, C. N., E-mail: J.Croston@soton.ac.uk [Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH (United Kingdom)

2011-06-20T23:59:59.000Z

23

Ferroelectric opening switches for large-scale pulsed power drivers.  

DOE Green Energy (OSTI)

Fast electrical energy storage or Voltage-Driven Technology (VDT) has dominated fast, high-voltage pulsed power systems for the past six decades. Fast magnetic energy storage or Current-Driven Technology (CDT) is characterized by 10,000 X higher energy density than VDT and has a great number of other substantial advantages, but it has all but been neglected for all of these decades. The uniform explanation for neglect of CDT technology is invariably that the industry has never been able to make an effective opening switch, which is essential for the use of CDT. Most approaches to opening switches have involved plasma of one sort or another. On a large scale, gaseous plasmas have been used as a conductor to bridge the switch electrodes that provides an opening function when the current wave front propagates through to the output end of the plasma and fully magnetizes the plasma - this is called a Plasma Opening Switch (POS). Opening can be triggered in a POS using a magnetic field to push the plasma out of the A-K gap - this is called a Magnetically Controlled Plasma Opening Switch (MCPOS). On a small scale, depletion of electron plasmas in semiconductor devices is used to affect opening switch behavior, but these devices are relatively low voltage and low current compared to the hundreds of kilo-volts and tens of kilo-amperes of interest to pulsed power. This work is an investigation into an entirely new approach to opening switch technology that utilizes new materials in new ways. The new materials are Ferroelectrics and using them as an opening switch is a stark contrast to their traditional applications in optics and transducer applications. Emphasis is on use of high performance ferroelectrics with the objective of developing an opening switch that would be suitable for large scale pulsed power applications. Over the course of exploring this new ground, we have discovered new behaviors and properties of these materials that were here to fore unknown. Some of these unexpected discoveries have lead to new research directions to address challenges.

Brennecka, Geoffrey L.; Rudys, Joseph Matthew; Reed, Kim Warren; Pena, Gary Edward; Tuttle, Bruce Andrew; Glover, Steven Frank

2009-11-01T23:59:59.000Z

24

Designing Electricity Markets with Large Shares of Wind Power  

E-Print Network (OSTI)

-time (RT) prices in Iowa (MEC interface), May 11­17, 2009. MISO NYISO PJM ERCOT CAISO Wind Power Capacity) and PJM have already introduced rules for mandatory real-time bidding and control of wind power

Kemner, Ken

25

Robust, Multifunctional Joint for Large Scale Power Production ...  

Solar Photovoltaic; ... optimizing each function can be chosen without sacrificing space. ... supports and edge current collection to ensure efficient power ...

26

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

27

Towards reactive scheduling for large-scale virtual power plants  

Science Conference Proceedings (OSTI)

Concerning distributed energy management, virtual power plants are a frequently discussed topic. Although there are several different approaches to the coordination of distributed energy resources in this context, the inherent dynamics of this complex ...

Martin Trschel; Hans-Jrgen Appelrath

2009-09-01T23:59:59.000Z

28

Model Abstraction Techniques for Large-Scale Power Systems  

E-Print Network (OSTI)

Report on System Simulation using High Performance Computing Prepared by New Mexico Tech New Mexico: Application of High Performance Computing to Electric Power System Modeling, Simulation and Analysis Task Two

29

On-Line Monitoring Diagnostic Analysis for Large Power Transformers  

Science Conference Proceedings (OSTI)

Through its Light Water Reactor Sustainability Program, Idaho National Laboratory (INL) is conducting research to develop and demonstrate the on-line monitoring capabilities of active components in existing nuclear power plants. A pilot project is currently underway to apply these capabilities to generator step-up transformers (GSUs) and emergency diesel generators (EDGs). INL and the Electric Power Research Institute (EPRI) are working together to implement the pilot project. The EPRI Fleetwide ...

2013-05-24T23:59:59.000Z

30

Aging assessment of large electric motors in nuclear power plants  

Science Conference Proceedings (OSTI)

Large electric motors serve as the prime movers to drive high capacity pumps, fans, compressors, and generators in a variety of nuclear plant systems. This study examined the stressors that cause degradation and aging in large electric motors operating in various plant locations and environments. The operating history of these machines in nuclear plant service was studied by review and analysis of failure reports in the NPRDS and LER databases. This was supplemented by a review of motor designs, and their nuclear and balance of plant applications, in order to characterize the failure mechanisms that cause degradation, aging, and failure in large electric motors. A generic failure modes and effects analysis for large squirrel cage induction motors was performed to identify the degradation and aging mechanisms affecting various components of these large motors, the failure modes that result, and their effects upon the function of the motor. The effects of large motor failures upon the systems in which they are operating, and on the plant as a whole, were analyzed from failure reports in the databases. The effectiveness of the industry`s large motor maintenance programs was assessed based upon the failure reports in the databases and reviews of plant maintenance procedures and programs.

Villaran, M.; Subudhi, M. [Brookhaven National Lab., Upton, NY (United States)

1996-03-01T23:59:59.000Z

31

2013 completions of large solar thermal power plants mark ...  

U.S. Energy Information Administration (EIA)

Several large, new solar thermal power plants are expected to begin commercial operation by the end of 2013, more than doubling the solar thermal ...

32

System aspects of large scale implementation of a photovoltaic power plant.  

E-Print Network (OSTI)

?? In this thesis the static and dynamic behavior of large scale grid connected PV power plants are analyzed. A model of a 15 MW (more)

Ruiz, lvaro

2011-01-01T23:59:59.000Z

33

Glendale Water and Power - Large Business Energy Efficiency Program...  

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

its medium and large business customers with electric bills of more than 3000 per month (electric usage of 250,000 kWh annually 36,000 per year) to encourage energy efficiency...

34

Variability of Load and Net Load in Case of Large Scale Distributed Wind Power  

Science Conference Proceedings (OSTI)

Large scale wind power production and its variability is one of the major inputs to wind integration studies. This paper analyses measured data from large scale wind power production. Comparisons of variability are made across several variables: time scale (10-60 minute ramp rates), number of wind farms, and simulated vs. modeled data. Ramp rates for Wind power production, Load (total system load) and Net load (load minus wind power production) demonstrate how wind power increases the net load variability. Wind power will also change the timing of daily ramps.

Holttinen, H.; Kiviluoma, J.; Estanqueiro, A.; Gomez-Lazaro, E.; Rawn, B.; Dobschinski, J.; Meibom, P.; Lannoye, E.; Aigner, T.; Wan, Y. H.; Milligan, M.

2011-01-01T23:59:59.000Z

35

Lessons Learned: Planning and Operating Power Systems with Large  

E-Print Network (OSTI)

2007 2008 2009 Year kW 0 50 100 150 200 250 300 350 No. Installed kW No. Systems #12;2 Most to their systems powered by as-available renewable energy sources (primarily wind and solar). The Big Island also and controlled to the extent as combustion turbines, diesels or steam generators. The geothermal units on the Big

36

Transient Stability Assessment of Power System with Large Amount of Wind Power Penetration: the  

E-Print Network (OSTI)

: a danish study case," Int. Journal of Eletrical Power and Energy Systems, vol. 28, no. 1, pp 48-57, Oct on the transient fault behavior of the Nordic power system," Int. Journal of Eletrical Power and Energy Systems

Chen, Zhe

37

POWER BALANCING CONTROL WITH LARGE SCALE WIND POWER INTEGRATION IN DENMARK  

E-Print Network (OSTI)

kV transmission system with the HVDC connections to Nordel systems (Norway and Sweden) in the north power exchange. Earlier studies in [4] have shown that the power exchange through the HVDC links plants and the power exchange via the HVDC connections. The overall model includes the power gradient

Bak-Jensen, Birgitte

38

innovati nNREL Confirms Large Potential for Grid Integration of Wind, Solar Power  

E-Print Network (OSTI)

innovati nNREL Confirms Large Potential for Grid Integration of Wind, Solar Power To fully harvest the nation's bountiful wind and solar resources, it is critical to know how much electrical power from at adding enough wind and solar power capacity to the grid to produce 35% of the WestConnect's electricity

39

Transient Stability Assessment of Power System with Large Amount of Wind Power Penetration: the  

E-Print Network (OSTI)

of HVDC connection to manage the imbalance at the system interconnections with the increased wind power. 2 is based on a 400 kV and 150 kV transmission system with HVDC connections to Nordel systems, Norway at the planned power exchange. Earlier studies in [4] and [5] have shown that the power exchange through the HVDC

Chen, Zhe

40

Design and operation of power systems with large amounts of wind power  

E-Print Network (OSTI)

Productionhas been formed in IEA Wind. The R&D task will collect and share information on the experience gained and the studies made on power system impacts of wind power, and review methodologies, tools and data used. This paper outlines the power system impacts of wind power, the national studies published and ongoing and describes the goals of the international collaboration. There are dozens of studies made and ongoing related to cost of wind integration, however, the results are not easy to compare. An indepth review of the studies is needed to draw conclusions on the range of integration costs for wind power. Stateofthe art review process will seek for reasons behind the wide range of results for costs of wind integration definitions for wind penetration, reserves and costs; different power system and load characteristics and operational rules; underlying assumptions on variability of wind etc. 1

Hannele Holttinen; Peter Meibom; Cornel Ensslin; Lutz Hofmann; John Mccann; Jan Pierik; John Olav T

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "large power time-of-day" 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

Effect of the shutdown of a large coal-fired power plant on ambient...  

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

Effect of the shutdown of a large coal-fired power plant on ambient mercury species Yungang Wang 1 , Jiaoyan Huang 2,a , Philip K. Hopke 3,* , Oliver V. Rattigan 4 , David C....

42

Impacts of Large Amounts of Wind Power on Design and Operation of Power Systems, Results of IEA Collaboration  

SciTech Connect

There are a multitude of studies completed and ongoing related to the cost of wind integration. However, the results are not easy to compare. An international forum for exchange of knowledge of power system impacts of wind power has been formed under the IEA Implementing Agreement on Wind Energy. IEA WIND R and D Task 25 on 'Design and Operation of Power Systems with Large Amounts of Wind Power' produced a state-of-the-art report in October 2007, where the most relevant wind-power grid integration studies were analyzed, especially regarding methodologies and input data. This paper summarizes the results from 18 case studies, with discussion on differences in methodology as well as issues that have been identified to impact the cost of wind integration.

Holttinen, H.; Meibom, P.; Orths, A.; O'Malley, M.; Ummels, B. C.; Tande, J. O.; Estanqueiro, A.; Gomez, E.; Smith, J. C.; Ela, E.

2008-01-01T23:59:59.000Z

43

Total Cost Per MwH for all common large scale power generation sources |  

Open Energy Info (EERE)

Total Cost Per MwH for all common large scale power generation sources Total Cost Per MwH for all common large scale power generation sources Home > Groups > DOE Wind Vision Community In the US DOEnergy, are there calcuations for real cost of energy considering the negative, socialized costs of all commercial large scale power generation soruces ? I am talking about the cost of mountain top removal for coal mined that way, the trip to the power plant, the sludge pond or ash heap, the cost of the gas out of the stack, toxificaiton of the lakes and streams, plant decommision costs. For nuclear yiou are talking about managing the waste in perpetuity. The plant decomission costs and so on. What I am tring to get at is the 'real cost' per MWh or KWh for the various sources ? I suspect that the costs commonly quoted for fossil fuels and nucelar are

44

The Use of Large Transparent Ceramics in a High Powered, Diode Pumped Solid State Laser  

SciTech Connect

The advent of large transparent ceramics is one of the key enabling technological advances that have shown that the development of very high average power compact solid state lasers is achievable. Large ceramic neodymium doped yttrium aluminum garnet (Nd:YAG) amplifier slabs are used in Lawrence Livermore National Laboratory's (LLNL) Solid State Heat Capacity Laser (SSHCL), which has achieved world record average output powers in excess of 67 kilowatts. We will describe the attributes of using large transparent ceramics, our present system architecture and corresponding performance; as well as describe our near term future plans.

Yamamoto, R; Bhachu, B; Cutter, K; Fochs, S; Letts, S; Parks, C; Rotter, M; Soules, T

2007-09-24T23:59:59.000Z

45

Solar Power in the Desert: Are the current large-scale solar developments really improving Californias environment?  

E-Print Network (OSTI)

from large-scale solar steam generator systems Persistenceof water as steam power generators. The largest of these

Allen, Michael F.; McHughen, Alan

2011-01-01T23:59:59.000Z

46

Solar Power in the Desert: Are the current large-scale solar developments really improving Californias environment?  

E-Print Network (OSTI)

D EVELOPMENT I SSUES Solar Power in the Desert: Are the2 Most of the large-scale solar power projects utilize largethat will be affected by solar power facilities. There are

Allen, Michael F.; McHughen, Alan

2011-01-01T23:59:59.000Z

47

Cloud Formation and Time of Day  

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

daytime or nighttime? Replies: Dena Daytime. If there is enough moisture in the air the Sun will heat the uneven land surface, unevenly, causing air currents that rise (because...

48

Electromagnetic field of the large power cables and impact on the human health  

Science Conference Proceedings (OSTI)

In this work we survey our research on domain decomposition and related algorithms for large power electric cables and the impact on the human health. The equations that describe the behaviour of the fields in electromagnetic devices are coupled because ... Keywords: bioheat equation, coupled fields, electrical cables, finite element method

Daniela Crstea

2012-01-01T23:59:59.000Z

49

Electromagnetic field of the large power cables and interaction with the human body  

Science Conference Proceedings (OSTI)

In this work we survey our research on domain decomposition and related algorithms for large power electric cables and the impact on the human health. The equations that describe the behaviour of the fields in electromagnetic devices are coupled because ... Keywords: bioheat equation, coupled fields, electrical cables, finite element method

Daniela Crstea

2010-07-01T23:59:59.000Z

50

Large-scale Ocean-based or Geothermal Power Plants by Thermoelectric Effects  

E-Print Network (OSTI)

Heat resources of small temperature difference are easily accessible, free and unlimited on earth. Thermoelectric effects provide the technology for converting these heat resources directly into electricity. We present designs of electricity generators based on thermoelectric effects and using heat resources of small temperature difference, e.g., ocean water at different depths and geothermal sources, and conclude that large-scale power plants based on thermoelectric effects are feasible and economically competitive. The key observation is that the power factor of thermoelectric materials, unlike the figure of merit, can be improved by orders of magnitude upon laminating good conductors and good thermoelectric materials. The predicted large-scale power plants based on thermoelectric effects, if validated, will have a global economic and social impact for its scalability, and the renewability, free and unlimited supply of heat resources of small temperature difference on earth.

Liu, Liping

2012-01-01T23:59:59.000Z

51

Large Hybrid Energy Systems for Making Low CO2 Load-Following Power and Synthetic Fuel  

SciTech Connect

Hybrid energy systems using nuclear heat sources can economically produce load-following electrical power by exploiting the surplus generation capacity available at night or seasonally to make synthetic fuel. Vehicle fuel is the only current energy use large enough to absorb all the energy capacity that might be diverted from the power industry, and its ease of storage obviates problems with discontinuous synfuel production. The potential benefits and challenges of synfuels integration are illustrated by the production of methanol from natural gas (as a source of carbon) using steam from a light water nuclear power reactor which is assumed to be available in accord with a year's worth of power demand data. Methanol's synthesis process is easily adapted to using 300 C heat from a light water reactor and this simple compound can be further processed into gasoline, biodiesel, or dimethyl ether, fuels which can be used with the current vehicle fleet. A supplemental feed to the methanol process of natural gas (for energy) allows operation at constant full rate when the nuclear heat is being used to produce electrical power. The higher capital costs of such a system are offset by a lower cost of heat and power production from a large base load type of plant and by reduced costs associated with much lower CO2 emissions. Other less tangible economic benefits of this and similar hybrid systems include better use of natural resource for fuels and greater energy services security from the domestic production of vehicle fuel.

Robert S. Cherry; Richard D. Boardman; Steven Aumeier

2012-02-01T23:59:59.000Z

52

Large Thermoelectric Power Factor in TiS2 Crystal with Nearly Stoichiometric Composition  

E-Print Network (OSTI)

A TiS2 crystal with a layered structure was found to have a large thermoelectric power factor. The in-plane power factor S2 /? at 300 K is 37.1 W/K2cm with resistivity (?) of 1.7 m?cm and thermopower (S) of-251 V/K, and this value is comparable to that of the best thermoelectric material, Bi2Te3 alloy. The electrical resistivity shows both metallic and highly anisotropic behaviors, suggesting that the electronic structure of this TiS2 crystal has a quasi-twodimensional nature. The large thermoelectric response can be ascribed to the large density of state just above the Fermi energy and inter-valley scattering. In spite of the large power factor, the figure of merit, ZT of TiS2 is 0.16 at 300 K, because of relatively large thermal conductivity, 68 mW/Kcm. However, most of this value comes from reducible lattice contribution. Thus, ZT can be improved by reducing lattice thermal conductivity, e.g., by introducing a rattling unit into the inter-layer sites.

H. Imai; Y. Shimakawa; Y. Kubo

2008-01-01T23:59:59.000Z

53

A Prototype of Wireless Power and Data Acquisition System for Large Detectors  

E-Print Network (OSTI)

A new prototype wireless data acquisition system has been developed with the intended application to read-out instrumentation systems having a large number of channels. In addition such system could be deployed in smaller detectors requiring increased mobility. The data acquisition and control system is based on 802.11n compliant hardware and protocols. In this paper we describe our case study with a single readout channel performed for a potential large detector containing photomultiplier tubes. The front-end circuitry, including a high-voltage power supply is powered wirelessly thus creating an all-wireless detector readout. The benchmarked performance of the prototype system and how a large scale implementation of the system might be realized are discussed.

P. De Lurgio; Z. Djurcic; G. Drake; R. Hashemian; A. Kreps; M. Oberling; T. Pearson; H. Sahoo

2013-10-03T23:59:59.000Z

54

Simulating the power consumption of large-scale sensor network applications  

E-Print Network (OSTI)

Developing sensor network applications demands a new set of tools to aid programmers. A number of simulation environments have been developed that provide varying degrees of scalability, realism, and detail for understanding the behavior of sensor networks. To date, however, none of these tools have addressed one of the most important aspects of sensor application design: that of power consumption. While simple approximations of overall power usage can be derived from estimates of node duty cycle and communication rates, these techniques often fail to capture the detailed, low-level energy requirements of the CPU, radio, sensors, and other peripherals. In this paper, we present PowerTOSSIM, a scalable simulation environment for wireless sensor networks that provides an accurate, per-node estimate of power consumption. PowerTOSSIM is an extension to TOSSIM, an event-driven simulation environment for TinyOS applications. In PowerTOSSIM, TinyOS components corresponding to specific hardware peripherals (such as the radio, EEPROM, LEDs, and so forth) are instrumented to obtain a trace of each devices activity during the simulation run. PowerTOSSIM employs a novel code-transformation technique to estimate the number of CPU cycles executed by each node, eliminating the need for expensive instruction-level simulation of sensor nodes. PowerTOSSIM includes a detailed model of hardware energy consumption based on the Mica2 sensor node platform. Through instrumentation of actual sensor nodes, we demonstrate that PowerTOSSIM provides accurate estimation of power consumption for a range of applications and scales to support very large simulations.

Victor Shnayder; Mark Hempstead; Bor-rong Chen; Geoff Werner Allen; Matt Welsh

2004-01-01T23:59:59.000Z

55

Large heavy-duty gas turbines for base-load power generation and heat cogeneration  

SciTech Connect

The predominant role of large gas turbines has shifted from peaking-load duty to midrange and base-load electric power generation, especially within combined-cycle plants. Such applications require heavy-duty industrial gas turbines to ensure the same high reliability and availability for continuous service as the associated steam turbines. It is also important that the gas turbines be designed for low maintenance to minimize the necessary outage times and costs for component repair and replacement. The basic design principles and applications of Model V94 gas turbines are discussed with special reference to highly reliable and economic bulk power generation.

Joyce, J.S.

1985-01-01T23:59:59.000Z

56

Environmental Impacts From the Installation and Operation of Large-scale Solar Power Plants  

Science Conference Proceedings (OSTI)

Large-scale solar power plants are being developed at a rapid rate, and are setting up to use thousands or millions of acres of land globally. The environmental issues related to the installation and operation phases of such facilities have not, so far, been addressed comprehensively in the literature. Here we identify and appraise 32 impacts from these phases, under the themes of land use intensity, human health and well-being, plant and animal life, geohydrological resources, and climate change. Our appraisals assume that electricity generated by new solar power facilities will displace electricity from traditional U.S. generation technologies. Altogether we find 22 of the considered 32 impacts to be beneficial. Of the remaining 10 impacts, 4 are neutral, and 6 require further research before they can be appraised. None of the impacts are negative relative to traditional power generation. We rank the impacts in terms of priority, and find all the high-priority impacts to be beneficial. In quantitative terms, large-scale solar power plants occupy the same or less land per kW h than coal power plant life cycles. Removal of forests to make space for solar power causes CO{sub 2} emissions as high as 36 g CO{sub 2} kW h{sup -1}, which is a significant contribution to the life cycle CO{sub 2} emissions of solar power, but is still low compared to CO{sub 2} emissions from coal-based electricity that are about 1100 g CO{sub 2} kW h{sup -1}.

Fthenakis, V.; Turney, Damon

2011-04-23T23:59:59.000Z

57

Theoretical and experimental power from large horizontal-axis wind turbines  

SciTech Connect

A method for calculating the output power from large horizontal-axis wind turbines is presented. Modifications to the airfoil characteristics and the momentum portion of classical blade element-momentum theory are given that improve correlation with measured data. Improvement is particularly evident at low tip speed ratios where aerodynamic stall can occur as the blade experiences high angles of attack. Output power calculated using the modified theory is compared with measured data for several large wind turbines. These wind turbines range in size from the DOE/NASA 100 kW Mod-O (38 m rotor diameter) to the 2000 kW Mod-1 (61 m rotor diameter). The calculated results are in good agreement with measured data from these machines.

Viterna, L A; Janetzke, D C

1982-09-01T23:59:59.000Z

58

"Large Power Transformers and the U.S. Electric Grid" Report (June 2012) |  

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

"Large Power Transformers and the U.S. Electric Grid" Report (June "Large Power Transformers and the U.S. Electric Grid" Report (June 2012) "Large Power Transformers and the U.S. Electric Grid" Report (June 2012) The Office of Electricity Delivery and Energy Reliability has released the "Large Power Transformers and the U.S. Electric Grid" report, an assessment of the procurement and supply environment of large power transformers (LPTs). The report examines the characteristics and procurement of LPTs, including key raw materials and transportation; historical trends and future demands; global and domestic LPT suppliers; and potential issues in the global sourcing of LPTs. LPTs have long been a major concern for the U.S. electric power sector. Key industry sources - including the Energy Sector Specific Plan, the

59

"Large Power Transformers and the U.S. Electric Grid" Report (June 2012) |  

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

"Large Power Transformers and the U.S. Electric Grid" Report (June "Large Power Transformers and the U.S. Electric Grid" Report (June 2012) "Large Power Transformers and the U.S. Electric Grid" Report (June 2012) The Office of Electricity Delivery and Energy Reliability has released the "Large Power Transformers and the U.S. Electric Grid" report, an assessment of the procurement and supply environment of large power transformers (LPTs). The report examines the characteristics and procurement of LPTs, including key raw materials and transportation; historical trends and future demands; global and domestic LPT suppliers; and potential issues in the global sourcing of LPTs. LPTs have long been a major concern for the U.S. electric power sector. Key industry sources - including the Energy Sector Specific Plan, the

60

Effect of the shutdown of a large coal-fired power plant on ambient mercury  

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

Effect of the shutdown of a large coal-fired power plant on ambient mercury Effect of the shutdown of a large coal-fired power plant on ambient mercury species Title Effect of the shutdown of a large coal-fired power plant on ambient mercury species Publication Type Journal Article LBNL Report Number LBNL-6097E Year of Publication 2013 Authors Wang, Yungang, Jiaoyan Huang, Philip K. Hopke, Oliver V. Rattigan, David C. Chalupa, Mark J. Utell, and Thomas M. Holsen Journal Chemosphere Volume 92 Issue 4 Pagination 360-367 Date Published 07/2013 Abstract In the spring of 2008, a 260MWe coal-fired power plant (CFPP) located in Rochester, New York was closed over a 4 month period. Using a 2-years data record, the impacts of the shutdown of the CFPP on nearby ambient concentrations of three Hg species were quantified. The arithmetic average ambient concentrations of gaseous elemental mercury (GEM), gaseous oxidized mercury (GOM), and particulate mercury (PBM) during December 2007-November 2009 were 1.6ng/m3, 5.1pg/m3, and 8.9pg/m3, respectively. The median concentrations of GEM, GOM, and PBM significantly decreased by 12%, 73%, and 50% after the CFPP closed (Mann-Whitney test, p<0.001). Positive Matrix Factorization (EPA PMF v4.1) identified six factors including O3-rich, traffic, gas phase oxidation, wood combustion, nucleation, and CFPP. When the CFPP was closed, median concentrations of GEM, GOM, and PBM apportioned to the CFPP factor significantly decreased by 25%, 74%, and 67%, respectively, compared to those measured when the CFPP was still in operation (Mann-Whitney test, p<0.001). Conditional probability function (CPF) analysis showed the greatest reduction in all three Hg species was associated with northwesterly winds pointing toward the CFPP. These changes were clearly attributable to the closure of the CFPP.

Note: This page contains sample records for the topic "large power time-of-day" 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

Energy-Efficient Power Control in Multipath CDMA Channels via Large System Analysis  

E-Print Network (OSTI)

This paper is focused on the design and analysis of power control procedures for the uplink of multipath code-division-multiple-access (CDMA) channels based on the large system analysis (LSA). Using the tools of LSA, a new decentralized power control algorithm aimed at energy efficiency maximization and requiring very little prior information on the interference background is proposed; moreover, it is also shown that LSA can be used to predict with good accuracy the performance and operational conditions of a large network operating at the equilibrium over a multipath channel, i.e. the power, signal-to-interference-plus-noise ratio (SINR) and utility profiles across users, wherein the utility is defined as the number of bits reliably delivered to the receiver for each energy-unit used for transmission. Additionally, an LSA-based performance comparison among linear receivers is carried out in terms of achieved energy efficiency at the equilibrium. Finally, the problem of the choice of the utility-maximizing tr...

Buzzi, Stefano; Poor, H Vincent

2008-01-01T23:59:59.000Z

62

PowerGrid - A Computation Engine for Large-Scale Electric Networks  

Science Conference Proceedings (OSTI)

This Final Report discusses work on an approach for analog emulation of large scale power systems using Analog Behavioral Models (ABMs) and analog devices in PSpice design environment. ABMs are models based on sets of mathematical equations or transfer functions describing the behavior of a circuit element or an analog building block. The ABM concept provides an efficient strategy for feasibility analysis, quick insight of developing top-down design methodology of large systems and model verification prior to full structural design and implementation. Analog emulation in this report uses an electric circuit equivalent of mathematical equations and scaled relationships that describe the states and behavior of a real power system to create its solution trajectory. The speed of analog solutions is as quick as the responses of the circuit itself. Emulation therefore is the representation of desired physical characteristics of a real life object using an electric circuit equivalent. The circuit equivalent has within it, the model of a real system as well as the method of solution. This report presents a methodology of the core computation through development of ABMs for generators, transmission lines and loads. Results of ABMs used for the case of 3, 6, and 14 bus power systems are presented and compared with industrial grade numerical simulators for validation.

Chika Nwankpa

2011-01-31T23:59:59.000Z

63

Improving Performance of Power Systems with Large-scale Variable Generation Additions  

Science Conference Proceedings (OSTI)

A power system with large-scale renewable resources, like wind and solar generation, creates significant challenges to system control performance and reliability characteristics because of intermittency and uncertainties associated with variable generation. It is important to quantify these uncertainties, and then incorporate this information into decision-making processes and power system operations. This paper presents three approaches to evaluate the flexibility needed from conventional generators and other resources in the presence of variable generation as well as provide this flexibility from a non-traditional resource wide area energy storage system. These approaches provide operators with much-needed information on the likelihood and magnitude of ramping and capacity problems, and the ability to dispatch available resources in response to such problems.

Makarov, Yuri V.; Etingov, Pavel V.; Samaan, Nader A.; Lu, Ning; Ma, Jian; Subbarao, Krishnappa; Du, Pengwei; Kannberg, Landis D.

2012-07-22T23:59:59.000Z

64

A Tutorial on Detection and Characterization of Special Behavior in Large Electric Power Systems  

SciTech Connect

The objective of this document is to report results in the detection and characterization of special behavior in large electric power systems. Such behavior is usually dynamic in nature, but not always. This is also true for the underlying sources of special behavior. At the device level, a source of special behavior might be an automatic control system, a dynamic load, or even a manual control system that is operated according to some sharply defined policy. Other possible sources include passive system conditions, such as the state of a switched device or the amount of power carried on some critical line. Detection and characterization are based upon signature information that is extracted from the behavior observed. Characterization elements include the signature information itself, the nature of the behavior and its likely causes, and the associated implications for the system or for the public at large. With sufficient data and processing, this characterization may directly identify a particular condition or device at a specific location. Such conclusive results cannot always be done from just one observation, however. Information environments that are very sparse may require multiple observations, comparative model studies, and even direct testing of the system.

Hauer, John F.; DeSteese, John G.

2004-08-20T23:59:59.000Z

65

Thermocline Thermal Storage Test for Large-Scale Solar Thermal Power Plants  

DOE Green Energy (OSTI)

Solar thermal-to-electric power plants have been tested and investigated at Sandia National Laboratories (SNL) since the late 1970s, and thermal storage has always been an area of key study because it affords an economical method of delivering solar-electricity during non-daylight hours. This paper describes the design considerations of a new, single-tank, thermal storage system and details the benefits of employing this technology in large-scale (10MW to 100MW) solar thermal power plants. Since December 1999, solar engineers at Sandia National Laboratories' National Solar Thermal Test Facility (NSTTF) have designed and are constructing a thermal storage test called the thermocline system. This technology, which employs a single thermocline tank, has the potential to replace the traditional and more expensive two-tank storage systems. The thermocline tank approach uses a mixture of silica sand and quartzite rock to displace a significant portion of the volume in the tank. Then it is filled with the heat transfer fluid, a molten nitrate salt. A thermal gradient separates the hot and cold salt. Loading the tank with the combination of sand, rock, and molten salt instead of just molten salt dramatically reduces the system cost. The typical cost of the molten nitrate salt is $800 per ton versus the cost of the sand and rock portion at $70 per ton. Construction of the thermocline system will be completed in August 2000, and testing will run for two to three months. The testing results will be used to determine the economic viability of the single-tank (thermocline) storage technology for large-scale solar thermal power plants. Also discussed in this paper are the safety issues involving molten nitrate salts and other heat transfer fluids, such as synthetic heat transfer oils, and the impact of these issues on the system design.

ST.LAURENT,STEVEN J.

2000-08-14T23:59:59.000Z

66

Southeast Colorado Power Assn | Open Energy Information  

Open Energy Info (EERE)

Southeast Colorado Power Assn Southeast Colorado Power Assn Place Colorado Utility Id 17592 Utility Location Yes Ownership C NERC Location WECC NERC WECC Yes ISO Other Yes Activity Transmission Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Colorado Large Power Industrial Farm & Home/Single Phase - General Residential General Service Commercial General Service - Demand Commercial General Service - Standby Service Industrial General Service - Time of Day Commercial Heating and Water Heating Residential Industrial Large Power Industrial Irrigation & Water Pumping Commercial

67

752 IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 24, NO. 2, MAY 2009 Large-Scale Distribution Planning--Part  

E-Print Network (OSTI)

752 IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 24, NO. 2, MAY 2009 Large-Scale Distribution Planning methodology for low-voltage distribution network planning. Combined optimization of transformers and approximately 1 300 000 customers. Index Terms--Low voltage, network planning, power distribu- tion planning

Rudnick, Hugh

68

Abstract--The issue of controlled and reliable integration of distributed energy resources into microgrids and large power  

E-Print Network (OSTI)

into microgrids and large power grids has recently gained considerable attention. The microgrid concept, which capabilities. In order to provide uninterruptible power supply to the loads, microgrids are expected to operate. The problem of optimal management of the resources in a microgrid is being widely investigated and recent

Cañizares, Claudio A.

69

Application of EPRI's Transmission Reliability Evaluation for Large-Scale Systems (TRELSS) Program to Bonneville Power Administration System  

Science Conference Proceedings (OSTI)

Delivering power at the lowest cost while maintaining an acceptable level of reliability requires careful transmission planning. EPRI's Transmission Reliability Evaluation for Large-Scale Systems (TRELSS) can be used to analyze and quantify the reliability of bulk power systems to help determine the need for new transmission facilities. This report presents the results of reliability analyses for Bonneville Power Administration (BPA) using the TRELSS program.

1997-11-11T23:59:59.000Z

70

Method of Equivalencing for a Large Wind Power Plant with Multiple Turbine Representation: Preprint  

DOE Green Energy (OSTI)

This paper focuses on our effort to develop an equivalent representation of a Wind Power Plant collector system for power system planning studies.

Muljadi, E.; Pasupulati, S.; Ellis, A.; Kosterov, D.

2008-07-01T23:59:59.000Z

71

Equivalencing the Collector System of a Large Wind Power Plant: Preprint  

DOE Green Energy (OSTI)

This paper focuses on our effort to develop an equivalent representation of a wind power plant collector system for power system planning studies.

Muljadi, E.; Butterfield, C. P.; Ellis, A.; Mechenbier, J.; Hochheimer, J.; Young, R.; Miller, N.; Delmerico, R.; Zavadil, R.; Smith, J. C.

2006-01-01T23:59:59.000Z

72

Kansas City Power & Light Co | Open Energy Information  

Open Energy Info (EERE)

Power & Light Co Power & Light Co (Redirected from KCP&L) Jump to: navigation, search Name Kansas City Power & Light Co Place Kansas Utility Id 10000 References Energy Information Administration.[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Schedule LGS Large Secondary Service >1000kW Commercial Schedule LGS Large Secondary Service <1000kW Commercial Schedule LPS Large Power Service Industrial Schedule MGS Medium General Service Commercial Schedule R Residential Service Residential Schedule RTOD Residential Time of Day Service Residential Schedule SGS Small General Service >25kW Commercial Schedule SGS Small General Service <24kW Commercial

73

ELECTRIC VEHICLE BASED BATTERY STORAGES FOR LARGE SCALE WIND POWER INTEGRATION  

E-Print Network (OSTI)

Coherent Energy and Environment System Analysis CHP Combined Heat and Power CPP Condensing Power Plant DPL system and the thermal based power systems of Europe through Germany. The Western part of Denmark includes 6500MW of wind power plants (4000MW from distributed onshore wind farms and 2500MW from offshore

Pillai, Jayakrishnan Radhakrishna

74

Energy Storage and Reactive Power Compensator in a Large Wind Farm: Preprint  

Science Conference Proceedings (OSTI)

The size of wind farm power systems is increasing, and so is the number of wind farms contributing to the power systems network. The size of wind turbines is also increasing--from less than 1 MW a few years ago to the 2- to 3-MW machines being installed today and the 5-MW machines under development. The interaction of the wind farm, energy storage, reactive power compensation, and the power system network is being investigated. Because the loads and the wind farms' output fluctuate during the day, the use of energy storage and reactive power compensation is ideal for the power system network. Energy storage and reactive power compensation can minimize real/reactive power imbalances that can affect the surrounding power system. In this paper, we will show how the contribution of wind farms affects the power distribution network and how the power distribution network, energy storage, and reactive power compensation interact when the wind changes. We will also investigate the size of the components in relation to each other and to the power system.

Muljadi, E.; Butterfield, C. P.; Yinger, R.; Romanowitz, H.

2003-10-01T23:59:59.000Z

75

IEEE TRANSACTIONS ON POWER DELIVERY, VOL. 23, NO. 2, APRIL 2008 657 Overvoltage Protection of Large Power  

E-Print Network (OSTI)

distance from each other. These are of the type Elpress, each consisting of a 6-m-long steel pipe and a 95) protection studies for 245-kV power transformers for the aluminium industry as well as short-kV and 0.4-kV electrical installation systems for residential and industrial areas. Einar Andresson

Bak, Claus Leth

76

Kansas City Power & Light Co | Open Energy Information  

Open Energy Info (EERE)

City Power & Light Co City Power & Light Co Place Kansas Utility Id 10000 References Energy Information Administration.[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Schedule LGS Large Secondary Service >1000kW Commercial Schedule LGS Large Secondary Service <1000kW Commercial Schedule LPS Large Power Service Industrial Schedule MGS Medium General Service Commercial Schedule R Residential Service Residential Schedule RTOD Residential Time of Day Service Residential Schedule SGS Small General Service >25kW Commercial Schedule SGS Small General Service <24kW Commercial Average Rates Residential: $0.0980/kWh Commercial: $0.0784/kWh

77

Stochastic Methods for Planning and Operating Power Systems with Large Amounts of Wind and Solar Power: Preprint  

DOE Green Energy (OSTI)

Wind and solar generators differ in their generation characteristics than conventional generators. The variable output and imperfect predictability of these generators face a stochastic approach to plan and operate the power system without fundamentally changing the operation and planning problems. This paper overviews stochastic modeling challenges in operations, generation planning, and transmission planning, with references to current industry and academic work. Different stochastic problem formulations, including approximations, are also discussed.

Milligan, M.; Donohoo, P.; O'Malley, M.

2012-09-01T23:59:59.000Z

78

744 IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 24, NO. 2, MAY 2009 Large-Scale Distribution Planning--Part I  

E-Print Network (OSTI)

744 IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 24, NO. 2, MAY 2009 Large-Scale Distribution Planning--Part I: Simultaneous Network and Transformer Optimization Alejandro Navarro, Member, IEEE, and Hugh-voltage distribution networks. Combined optimization of transformers and associated networks is per- formed

Rudnick, Hugh

79

Impacts of Large-Scale Wind Generators Penetration on the Voltage Stability of Power Systems  

E-Print Network (OSTI)

by 2020 and 300 GW of installed wind power capacity in Europe by 2030. An overview of the historical to make energy available economically with reduced carbon emission using renewable energy sources-limiting factor. FACTS controllers have been used for solving various power system steady-state control problems

Pota, Himanshu Roy

80

NREL Confirms Large Potential for Grid Integration of Wind, Solar Power (Fact Sheet)  

DOE Green Energy (OSTI)

To fully harvest the nation's bountiful wind and solar resources, it is critical to know how much electrical power from these renewable resources could be integrated reliably into the grid. To inform the discussion about the potential of such variable sources, the National Renewable Energy Laboratory (NREL) launched two key regional studies, examining the east and west sections of the U.S. power grid. The studies show that it is technically possible for U.S. power systems to integrate 20%-35% renewable electricity if infrastructure and operational improvements can be made.

Not Available

2011-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "large power time-of-day" 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

Epfast: a model for simulating uncontrolled islanding in large power systems  

Science Conference Proceedings (OSTI)

This paper describes the capabilities, calculation logic, and foundational assumptions of EPfast, a new simulation and impact analysis tool developed by Argonne National Laboratory. The purpose of the model is to explore the tendency of power ...

Edgar C. Portante; Brian A. Craig; Leah Talaber Malone; James Kavicky; Stephen F. Folga; Stewart Cedres

2011-12-01T23:59:59.000Z

82

Impacts of large quantities of wind energy on the electric power system  

E-Print Network (OSTI)

Wind energy has been surging on a global scale. Significant penetration of wind energy is expected to take place in the power system, bringing new challenges because of the variability and uncertainty of this renewable ...

Yao, Yuan, S.M. Massachusetts Institute of Technology

2011-01-01T23:59:59.000Z

83

Comparison of large central and small decentralized power generation in India  

DOE Green Energy (OSTI)

This reports evaluates two options for providing reliable power to rural areas in India. The benefits and costs are compared for biomass based distributed generation (DG) systems versus a 1200-MW central grid coal-fired power plant. The biomass based DG systems are examined both as alternatives to grid extension and as supplements to central grid power. The benefits are divided into three categories: those associated with providing reliable power from any source, those associated specifically with biomass based DG technology, and benefits of a central grid coal plant. The report compares the estimated delivered costs of electricity from the DG systems to those of the central plant. The analysis includes estimates for a central grid coal plant and four potential DG system technologies: Stirling engines, direct-fired combustion turbines, fuel cells, and biomass integrated gasification combined cycles. The report also discusses issues affecting India`s rural electricity demand, including economic development, power reliability, and environmental concerns. The results of the costs of electricity comparison between the biomass DG systems and the coal-fired central grid station demonstrated that the DG technologies may be able to produce very competitively priced electricity by the start of the next century. The use of DG technology may provide a practical means of addressing many rural electricity issues that India will face in the future. Biomass DG technologies in particular offer unique advantages for the environment and for economic development that will make them especially attractive. 58 refs., 31 figs.

NONE

1997-05-01T23:59:59.000Z

84

Look-ahead voltage and load margin contingency selection functions for large-scale power systems  

SciTech Connect

Given the current operating condition (obtained from the real-time data), the near-term load demand at each bus (obtained from short-term load forecast), and the generation dispatch (say, based on economic dispatch), the authors present in this paper a load margin measure (MW and/or MVAR) to assess the system`s ability to withstand the forecasted load and generation variations. The authors also present a method to predict near-term system voltage profiles. The proposed look-ahead measure and the proposed voltage prediction are then applied to contingency selections for the near-term power system in terms of load margins to collapse and of the bus voltage magnitudes. They evaluate the proposed load-ahead measure and the voltage profile prediction on several power systems including a 1169-bus power system with 53 contingencies with promising results.

Chiang, H.D.; Wang, C.S.; Flueck, A.J. [Cornell Univ., Ithaca, NY (United States). School of Electrical Engineering

1997-02-01T23:59:59.000Z

85

An examination of wake effects and power production for a group of large wind turbines  

DOE Green Energy (OSTI)

Data from a group of three MOD-2 wind turbines and two meteorological towers at Goodnoe Hills were analyzed to evaluate turbine power output and wake effects (losses in power production due to operation of upwind turbines), and atmospheric factors influencing them. The influences of variations in the ambient wind speed, wind direction, and turbulence intensity were the primary factors evaluated. Meteorological and turbine data collected at the Goodnoe Hills site from April 1 to October 17, 1985, were examined to select the data sets for these analyses. Wind data from the two meteorological towers were evaluated to estimate the effect of a wake from an upwind turbine on the wind flow measured at the downwind tower. Maximum velocity deficits were about 25% and 12% at downwind distances of 5.8 and 8.3 rotor diameters (D), respectively. However, the maximum deficits at 5.8 D were about 14/degree/ off the centerline orientation between the turbine and the tower, indicating significant wake curvature. Velocity deficits were found to depend on the ambient wind speed, ranging from 27% at lower speeds (15 to 25 mph) to 20% at higher speeds (30 to 35 mph). Turbulence intensity increases dramatically in the wake by factors of about 2.3 and 1.5 over ambient conditions at 5.8 D and 8.3 D, respectively. An analysis of the ambient (non-wake) power production for all three turbines showed that the MOD-2 power output depends, not only on wind speed, but also on the turbulence intensity. At wind speeds below rated, there was a dramatic difference in turbine power output between low and high turbulence intensities for the same wind speed. One of the turbines had vortex generators on the blades. This turbine produced from 10% to 13% more power than the other two turbines when speeds were from 24 to 31 mph. 11 refs., 21 figs., 2 tabs.

Elliott, D.L.; Buck, J.W.; Barnard, J.C.

1988-04-01T23:59:59.000Z

86

A model for simulating impacts of seismic events on large power systems  

Science Conference Proceedings (OSTI)

This paper describes the capabilities and calculation logic of EPfast, a new simulation and impact analysis tool developed by Argonne National Laboratory. The tool represents an emerging set of simulation models focusing on evaluating the vulnerability ... Keywords: multi-component disruptions, power network seismic performance, seismic system vulnerability, system collapse, uncontrolled islanding

Edgar C. Portante; Brian A. Craig; Leah E. Talaber Malone; James A. Kavicky; Stephen F. Folga; Stewart Cedres

2011-04-01T23:59:59.000Z

87

A Dynamic Information Manager for Networked Monitoring of Large Power Systems  

Science Conference Proceedings (OSTI)

The Wide Area Measurement Systems (WAMS) project, a broad-based, multi-phase effort, has been focused on enhancing the reliability of interconnected power systems. This report documents the third phase of that effort, which addresses the management of the data and information that WAMS-related technologies provide.

1999-05-18T23:59:59.000Z

88

S30-A2-02 PROPOSAL OF UNIQUE PV SYSTEM FOR LARGE-SCALE PHOTOVOLTAIC POWER GENERATION SYSTEM  

E-Print Network (OSTI)

In order to make a PV power generation system survive as an economically viable option against other renewable energy sources, drastic reduction of energy cost is inevitable. The authors have been working on the development of a unique PV system to reduce total system cost including solar panel, power conversion unit and installation work [I]. In the proposed concept, AC photovoltaic device and adhesive mounting method were introduced for the dedicated use in power station. By introducing this concept, it is feasible that the system cost will be reduced to 113 compared to the conventional system. The authors believe that the concept is suitable for very large-scale PV systems in desert areas. 1.

Kimitoshi Fukae; Akiharu Takabayashi; Shigenori Itoyama; Ichiro Kataoka; Hidehisa Makita; Masaaki Matsushita; Takaaki Mukai; Nobuyoshi Takehara; Masaki Konishi

2003-01-01T23:59:59.000Z

89

The use of real-time off-site observations as a methodology for increasing forecast skill in prediction of large wind power ramps one or more hours ahead of their impact on a wind plant.  

SciTech Connect

ABSTRACT Application of Real-Time Offsite Measurements in Improved Short-Term Wind Ramp Prediction Skill Improved forecasting performance immediately preceding wind ramp events is of preeminent concern to most wind energy companies, system operators, and balancing authorities. The value of near real-time hub height-level wind data and more general meteorological measurements to short-term wind power forecasting is well understood. For some sites, access to onsite measured wind data - even historical - can reduce forecast error in the short-range to medium-range horizons by as much as 50%. Unfortunately, valuable free-stream wind measurements at tall tower are not typically available at most wind plants, thereby forcing wind forecasters to rely upon wind measurements below hub height and/or turbine nacelle anemometry. Free-stream measurements can be appropriately scaled to hub-height levels, using existing empirically-derived relationships that account for surface roughness and turbulence. But there is large uncertainty in these relationships for a given time of day and state of the boundary layer. Alternatively, forecasts can rely entirely on turbine anemometry measurements, though such measurements are themselves subject to wake effects that are not stationary. The void in free-stream hub-height level measurements of wind can be filled by remote sensing (e.g., sodar, lidar, and radar). However, the expense of such equipment may not be sustainable. There is a growing market for traditional anemometry on tall tower networks, maintained by third parties to the forecasting process (i.e., independent of forecasters and the forecast users). This study examines the value of offsite tall-tower data from the WINDataNOW Technology network for short-horizon wind power predictions at a wind farm in northern Montana. The presentation shall describe successful physical and statistical techniques for its application and the practicality of its application in an operational setting. It shall be demonstrated that when used properly, the real-time offsite measurements materially improve wind ramp capture and prediction statistics, when compared to traditional wind forecasting techniques and to a simple persistence model.

Martin Wilde, Principal Investigator

2012-12-31T23:59:59.000Z

90

Roosevelt Public Power Dist | Open Energy Information  

Open Energy Info (EERE)

Public Power Dist Public Power Dist Place Nebraska Utility Id 16164 Utility Location Yes Ownership P NERC Location WECC NERC WECC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Industrial 12.5 kv Industrial Large Commercial, OVER 50KVA Commercial Net Metering Residential Over 50 HP Irrigation Commercial Residential -General Purpose Residential Small 3 Phase Commercial Standby Commercial Standby Irrigation Commercial Time of Day- single phase Under 50 HP Irrigation Commercial Average Rates Residential: $0.1050/kWh Commercial: $0.1190/kWh Industrial: $0.1150/kWh

91

A new VME based high voltage power supply for large experiments  

SciTech Connect

A new VME based high voltage power supply has been developed for the D{O} experiment at Fermilab. There are three types of supplies delivering up to {plus_minus}5.6 kV at 1.0 mA or +2.0 kV at 3.0 mA with a set accuracy of 1.5 V and extremely low voltage ripples. Complete computer control has allowed many special features to be developed for the supply, including user-defined control land monitor groups, variable ramp rates, and advanced histogram and graphic functions. 3 refs.

Ahn, S.C.; Angstadt, R.D.; Droege, T.F.; Johnson, M.E.; MacKinnon, B.A.; McNulty, S.E.; Shea, M.F.; Thompson, R.N.; Watson, M.M. [Fermi National Accelerator Lab., Batavia, IL (United States); Franzini, P. [Columbia Univ., New York, NY (United States); Jones, A.A. [Superconducting Super Collider Lab., Dallas, TX (United States); Lopez, M.L. [La Plata Univ. Nacional (Argentina); Wimpenny, S.J.; Yang, M.J. [California Univ., Riverside, CA (United States)

1991-11-01T23:59:59.000Z

92

A new VME based high voltage power supply for large experiments  

Science Conference Proceedings (OSTI)

A new VME based high voltage power supply has been developed for the D{O} experiment at Fermilab. There are three types of supplies delivering up to {plus minus}5.6 kV at 1.0 mA or +2.0 kV at 3.0 mA with a set accuracy of 1.5 V and extremely low voltage ripples. Complete computer control has allowed many special features to be developed for the supply, including user-defined control land monitor groups, variable ramp rates, and advanced histogram and graphic functions. 3 refs.

Ahn, S.C.; Angstadt, R.D.; Droege, T.F.; Johnson, M.E.; MacKinnon, B.A.; McNulty, S.E.; Shea, M.F.; Thompson, R.N.; Watson, M.M. (Fermi National Accelerator Lab., Batavia, IL (United States)); Franzini, P. (Columbia Univ., New York, NY (United States)); Jones, A.A. (Superconducting Super Collider Lab., Dallas, TX (United States)); Lopez, M.L. (La Plata Univ. Nacional (Argentina)); Wimpenny, S.J.; Yang, M.J

1991-11-01T23:59:59.000Z

93

Plant Support Engineering: Guidance for the Replacement of Large Electric Motors at Nuclear Power Plants  

Science Conference Proceedings (OSTI)

The purpose of this report is to prepare a primary source of guidance for a project manager who is coordinating a team of plant personnel tasked with replacing a large electric motor. The report provides a generic process that describes interfaces and key steps necessary to ensure that the motor is evaluated and replaced in the most cost-effective and efficient means possible. The report also provides guidance regarding the typical composition of the project team and demonstrates how performance of their...

2010-03-15T23:59:59.000Z

94

Online Monitoring Technical Basis and Analysis Framework for Large Power Transformers; Interim Report for FY 2012  

SciTech Connect

The Light Water Reactor Sustainability program at Idaho National Laboratory (INL) is actively conducting research to develop and demonstrate online monitoring (OLM) capabilities for active components in existing Nuclear Power Plants. A pilot project is currently underway to apply OLM to Generator Step-Up Transformers (GSUs) and Emergency Diesel Generators (EDGs). INL and the Electric Power Research Institute (EPRI) are working jointly to implement the pilot project. The EPRI Fleet-Wide Prognostic and Health Management (FW-PHM) Software Suite will be used to implement monitoring in conjunction with utility partners: the Shearon Harris Nuclear Generating Station (owned by Duke Energy for GSUs, and Braidwood Generating Station (owned by Exelon Corporation) for EDGs. This report presents monitoring techniques, fault signatures, and diagnostic and prognostic models for GSUs. GSUs are main transformers that are directly connected to generators, stepping up the voltage from the generator output voltage to the highest transmission voltages for supplying electricity to the transmission grid. Technical experts from Shearon Harris are assisting INL and EPRI in identifying critical faults and defining fault signatures associated with each fault. The resulting diagnostic models will be implemented in the FW-PHM Software Suite and tested using data from Shearon-Harris. Parallel research on EDGs is being conducted, and will be reported in an interim report during the first quarter of fiscal year 2013.

Nancy J. Lybeck; Vivek Agarwal; Binh T. Pham; Heather D. Medema; Kirk Fitzgerald

2012-09-01T23:59:59.000Z

95

Modeling of large aperture third harmonic frequency conversion of high power Nd:glass laser systems  

SciTech Connect

To provide high-energy, high-power beams at short wavelengths for inertial-confinement-fusion experiments, we routinely convert the 1.053-{mu}m output of the Nova, Nd:phosphate-glass, laser system to its third-harmonic wavelength. We describe performance and conversion efficiency modeling of the 3 {times} 3 arrays potassium-dihydrogen-phosphate crystal plates used for type II/type II phase-matched harmonic conversion of Nova 0.74-m diameter beams, and an alternate type I/type II phase-matching configuration that improves the third-harmonic conversion efficiency. These arrays provide energy conversion of up to 65% and intensity conversion to 70%. 19 refs., 11 figs.

Henesian, M.A.; Wegner, P.J.; Speck, D.R.; Bibeau, C.; Ehrlich, R.B.; Laumann, C.W.; Lawson, J.K.; Weiland, T.L.

1991-03-13T23:59:59.000Z

96

Large-Scale Testing and High-Fidelity Simulation Capabilities at Sandia National Laboratories to Support Space Power and Propulsion  

SciTech Connect

Sandia National Laboratories, as a Department of Energy, National Nuclear Security Agency, has major responsibility to ensure the safety and security needs of nuclear weapons. As such, with an experienced research staff, Sandia maintains a spectrum of modeling and simulation capabilities integrated with experimental and large-scale test capabilities. This expertise and these capabilities offer considerable resources for addressing issues of interest to the space power and propulsion communities. This paper presents Sandia's capability to perform thermal qualification (analysis, test, modeling and simulation) using a representative weapon system as an example demonstrating the potential to support NASA's Lunar Reactor System.

Dobranich, Dean [Thermal and Reactive Processes Department, Sandia National Laboratories Albuquerque, NM 87185 (United States); Blanchat, Thomas K. [Fire Science and Technology Department, Sandia National Laboratories Albuquerque, NM 87185 (United States)

2008-01-21T23:59:59.000Z

97

THE SCALE-UP OF LARGE PRESSURIZED FLUIDIZED BEDS FOR ADVANCED COAL-FIRED POWER PROCESSES  

SciTech Connect

This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor an agency thereof, nor any of the their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, A combined-cycle High Performance Power System (HIPPS) capable of overall cycle efficiencies approaching 50% has been proposed and designed by Foster Wheeler Development Corporation (FWDC). A pyrolyzer in the first stage of the HIPPS process converts a coal feedstock into fuel gas and char at an elevated pressure of 1.4 Map. (206 psia) and elevated temperature of 930 C (1700 F). The generated char serves as the feedstock for a Pulverized Coal (PC) boiler operating at atmospheric pressure, and the fuel gas is directly fired in a gas turbine. The hydrodynamic behavior of the pyrolyzer strongly influences the quality of both the fuel gas and the generated char, the energy split between the gas turbine and the steam turbine, and hence the overall efficiency of the system. By utilizing a simplified set of scaling parameters (Glicksman et al.,1993), a 4/7th labscale cold model of the pyrolyzer operating at ambient temperature and pressure was constructed and tested. The scaling parameters matched include solid to gas density ratio, Froude number, length to diameter ratio; dimensionless superficial gas velocity and solid recycle rate, particle sphericity and particle size distribution (PSD).

Leon R. Glicksman; Michael Louge; Hesham F. Younis; Richard Tan; Mathew Hyre; Mark Torpey

2003-11-24T23:59:59.000Z

98

Generator module architecture for a large solid oxide fuel cell power plant  

DOE Patents (OSTI)

A solid oxide fuel cell module contains a plurality of integral bundle assemblies, the module containing a top portion with an inlet fuel plenum and a bottom portion receiving air inlet feed and containing a base support, the base supports dense, ceramic exhaust manifolds which are below and connect to air feed tubes located in a recuperator zone, the air feed tubes passing into the center of inverted, tubular, elongated, hollow electrically connected solid oxide fuel cells having an open end above a combustion zone into which the air feed tubes pass and a closed end near the inlet fuel plenum, where the fuel cells comprise a fuel cell stack bundle all surrounded within an outer module enclosure having top power leads to provide electrical output from the stack bundle, where the fuel cells operate in the fuel cell mode and where the base support and bottom ceramic air exhaust manifolds carry from 85% to all 100% of the weight of the stack, and each bundle assembly has its own control for vertical and horizontal thermal expansion control.

Gillett, James E.; Zafred, Paolo R.; Riggle, Matthew W.; Litzinger, Kevin P.

2013-06-11T23:59:59.000Z

99

Versatile 0. 5 TW electron beam facility for power conditioning studies of large rare-gas/halide lasers  

Science Conference Proceedings (OSTI)

Rare-gas/halide lasers which are being developed for Inertial Confinement Fusion will require large area, low impedance electron beam drivers. A wide range of electron beam parameters are being considered for future systems in an effort to optimize the overall system design. A number of power conditioning issues must be investigated in order to obtain a better understanding of the various trade-offs involved in making such optimizations. The RAYITO electron beam accelerator is being designed and built at Sandia National Laboratories and will be used for such investigations. It will be capable of operating in either a 2 or 4 ohm configuration at 1 MV, 50 ns or 0.8 MV, 200 ns. Design details for RAYITO are presented in this paper. Experiments planned for this facility are also discussed.

Ramirez, J. J.

1980-01-01T23:59:59.000Z

100

Large-scale HI in nearby radio galaxies (II): the nature of classical low-power radio sources  

E-Print Network (OSTI)

An important aspect of solving the long-standing question as to what triggers various types of Active Galactic Nuclei involves a thorough understanding of the overall properties and formation history of their host galaxies. This is the second in a series of papers that systematically study the large-scale properties of cold neutral hydrogen (HI) gas in nearby radio galaxies. The main goal is to investigate the importance of gas-rich galaxy mergers and interactions among radio-loud AGN. In this paper we present results of a complete sample of classical low-power radio galaxies. We find that extended Fanaroff & Riley type-I radio sources are generally not associated with gas-rich galaxy mergers or ongoing violent interactions, but occur in early-type galaxies without large (> 10^8 M_sun) amounts of extended neutral hydrogen gas. In contrast, enormous discs/rings of HI gas (with sizes up to 190 kpc and masses up to 2 x 10^10 M_sun) are detected around the host galaxies of a significant fraction of the compac...

Emonts, B H C; Struve, C; Oosterloo, T A; van Moorsel, G; Tadhunter, C N; van der Hulst, J M; Brogt, E; Holt, J; Mirabal, N

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "large power time-of-day" from the National Library of EnergyBeta (NLEBeta).
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101

Large-Eddy Simulation Study of Wake Propagation and Power Production in an Array of Tidal-Current Turbines: Preprint  

DOE Green Energy (OSTI)

This paper presents our initial work in performing large-eddy simulations of tidal turbine array flows. First, a horizontally-periodic precursor simulation is performed to create turbulent flow data. Then that data is used as inflow into a tidal turbine array two rows deep and infinitely wide. The turbines are modeled using rotating actuator lines, and the finite-volume method is used to solve the governing equations. In studying the wakes created by the turbines, we observed that the vertical shear of the inflow combined with wake rotation causes lateral wake asymmetry. Also, various turbine configurations are simulated, and the total power production relative to isolated turbines is examined. Staggering consecutive rows of turbines in the simulated configurations allows the greatest efficiency using the least downstream row spacing. Counter-rotating consecutive downstream turbines in a non-staggered array shows a small benefit. This work has identified areas for improvement, such as the use of a larger precursor domain to better capture elongated turbulent structures, the inclusion of salinity and temperature equations to account for density stratification and its effect on turbulence, improved wall shear stress modelling, and the examination of more array configurations.

Churchfield, M. J.; Li, Y.; Moriarty, P. J.

2012-07-01T23:59:59.000Z

102

Large-Eddy Simulation Study of Wake Propagation and Power Production in an Array of Tidal-Current Turbines: Preprint  

DOE Green Energy (OSTI)

This paper presents our initial work in performing large-eddy simulations of tidal turbine array flows. First, a horizontally-periodic precursor simulation is performed to create turbulent flow data. Then that data is used to determine the inflow into a tidal turbine array two rows deep and infinitely wide. The turbines are modeled using rotating actuator lines, and the finite-volume method is used to solve the governing equations. In studying the wakes created by the turbines, we observed that the vertical shear of the inflow combined with wake rotation causes lateral wake asymmetry. Also, various turbine configurations are simulated, and the total power production relative to isolated turbines is examined. Staggering consecutive rows of turbines in the simulated configurations allows the greatest efficiency using the least downstream row spacing. Counter-rotating consecutive downstream turbines in a non-staggered array shows a small benefit. This work has identified areas for improvement, such as the use of a larger precursor domain to better capture elongated turbulent structures, the inclusion of salinity and temperature equations to account for density stratification and its effect on turbulence, improved wall shear stress modeling, and the examination of more array configurations.

Churchfield, M. J.; Li, Y.; Moriarty, P. J.

2011-07-01T23:59:59.000Z

103

Energy, power, and office buildings : design and analysis of an off-peak cooling system using structural mass storage  

E-Print Network (OSTI)

As the electric utilities face ever increasing peak power production requirements, (mostly from the commercial sector) scheduled "time-of-day" pricing schemes have become imperative. At present, most conservation strategies ...

Mathis, Rory Christopher

1982-01-01T23:59:59.000Z

104

Energy Storage Application Brief -- Case History for Large Flywheel System: Piller -- Flywheel Energy Storage Systems for Premium Power  

Science Conference Proceedings (OSTI)

Piller of Middleton, New York produces premium power systems for power quality and uninterruptible power supply (UPS) applications. An entire family of products is commercially available in a variety of system and circuit configurations for industrial use. These products are beneficial because they are highly reliable and protect from voltage sags. The energy storage components of these systems uses mature, conventional flywheel technology. This technology review describes the various applications of the...

1999-11-23T23:59:59.000Z

105

Thermal plant outages in a large hydro-thermal power supply system a method in probabilistic simulation  

Science Conference Proceedings (OSTI)

The advent of large computers has made a significant impact upon decision theory with their ability to generate a large number of simulations within a relatively short period of time. Better estimates of a system's capabilities and parameters can be ...

Charles W. Eastwood

1980-01-01T23:59:59.000Z

106

Analysis of the Madaras Rotor Power Plant: an alternate method for extracting large amounts of power from the wind. Executive summary  

DOE Green Energy (OSTI)

The purpose of the program was to analyze and up-date the design of the Madaras Rotor Power Plant concept that had been developed in the 1930's to determine the technical and economic feasibility of this system to be competitive with conventional horizontal axis wind turbines. The Madaras concept uses rotating cylinders, vertically mounted on flat cars, to react with the wind like a sail and propel an endless train of connected cars around a closed track at constant speed. Electricity is generated by alternators on each car that are geared to the wheels. Electrical power is transmitted from each car to the power house by a trolley system. A four-task program consisting of a series of wind tunnel tests, an electro-mechanical analysis, a performance analysis, and a cost analysis was conducted.

Whitford, D.H.; Minardi, J.E.; West, B.S.; Dominic, R.J.

1978-06-01T23:59:59.000Z

107

Numerical Study of Local/Regional Atmospheric Changes Caused by a Large Solar Central Receiver Power Plant  

Science Conference Proceedings (OSTI)

A two-dimensional, vertical cross section, numerical atmospheric mesoscale model has been applied to study the potential local/regional atmospheric effects of the installation of a 100 MWe solar thermal central receiver power plant at Barstow, ...

Chandrakant M. Bhumralkar; Arthur J. Slemmons; Kenneth C. Nitz

1981-06-01T23:59:59.000Z

108

Analysis of the Madaras Rotor Power Plant: an alternate method for extracting large amounts of power from the wind. Volume 2. Technical report  

DOE Green Energy (OSTI)

The purpose of the program was to analyze and up-date the design of the Madaras Rotor Power Plant concept that had been developed in the 1930's to determine the technical and economic feasibility of this system to be competitive with conventional horizontal axis wind turbines. A four-task program consisting of a series of wind tunnel tests, an electro-mechanical analysis, a performance analysis, and a cost analysis was conducted.

Whitford, D.H.; Minardi, J.E.; West, B.S.; Dominic, R.J.

1978-06-01T23:59:59.000Z

109

Program on Technology Innovation: An Optimization Approach for Life-Cycle Management Applied to Large Power Transformers  

Science Conference Proceedings (OSTI)

This report presents results and insights from a study of the life-cycle management (LCM) of main transformers at Constellation Energy Nuclear Group's (CENG's) five nuclear power plants. The study used two asset management (AM) tools developed by Electricit de France (EDF).

2011-07-04T23:59:59.000Z

110

PROCEEDINGS OF THE CONFERENCE ON BREEDING, ECONOMICS AND SAFETY IN LARGE FAST POWER REACTORS, OCTOBER 7-10, 1963  

SciTech Connect

Nuclear data, reactivity coefficients, core meltdown and the maximum accident, performance, fuels, economics, safety, Doppler effect theory, and Doppler experiments are discussed for fast power breeder reactors. Separate abstracts are prepared for 22 of the 46 papers presented. The remaining papers were previously abstracted in NSA

1963-12-01T23:59:59.000Z

111

BOILING NUCLEAR SUPERHEATER (BONUS) POWER STATION. Supplementary Study. Extrapolation to Large Central Station Integral Nuclear Superheat Plant  

SciTech Connect

An evaluation was made of the maximum size plant for which the BONUS reactor plant could serve as a realistic prototype and the design changes required to increase the size and characteristics for the present BONUS design such that it could serve as a realistic prototype for the largest feasible integral-superheat reactor power plant. (M.C.G.)

1962-10-31T23:59:59.000Z

112

CIVILIAN POWER REACTOR PROGRAM. PART III. STATUS REPORT ON LARGE (100 AND 300 MWe) HEAVY WATER-MODERATED POWER REACTORS--AS OF 1960  

SciTech Connect

An evaluation of 300- and 100-Mwe power plants was conducted using ground rules prescribed by the USAEC for this study. Costs corresponding to two average discharged fuel burnups are: 8.6 mills/kwh (8500 Mwd/ metric ton) and 8.8 mills/kwh (7500 Mwd/metric ton) for the 300-Mw plant. Costs for the 100 Mw plant are 14.7 mills/kwh for an average discharged fuel burnup of 6010 Mwd/metric ton. Estimates of future potential indicate that the 300 Mw/sub 3/ (8500 Mwd/metric ton) plant could produce power for 7.3 mills/kwh in a second generation, full scale plant of the same type. A further reduction to 6.4 mills/kwh should be possible as the result of the recommended ten-year development program. The current development program is adequate for providing the data needed to design and construct a prototype reactor. However, there is no natural U-fueled prototype and no prototype of the chosen reference design scheduled in the U.S. Current technology is sufficiently developed to initiate the design and construction of a pressure tube, boiling D/sub 2/Ocooled, natural UO/sub 2/- fueled reactor prototype plant in the immediate future. This plant would demonstrate the main features of a full scale plant and, in addition. would provide design data which could only be obtained by operation of a natural U- fueled reactor. (auth)

Hutton, J.H.; Davis, S.A.; Graves, C.C.; Duffy, J.G. comps.

1960-08-19T23:59:59.000Z

113

Assessment of generic solar thermal systems for large power applications: analysis of electric power generating costs for systems larger than 10 MWe  

DOE Green Energy (OSTI)

Seven generic types of collectors, together with associated subsystems for electric power generation, were considered. The collectors can be classified into three categories: (1) two-axis tracking (with compound-curvature reflecting surfaces); (2) one-axis tracking (with single-curvature reflecting surfaces); and (3) nontracking (with low-concentration reflecting surfaces). All seven collectors were analyzed in conceptual system configurations with Rankine-cycle engines. In addition, two of the collectors were analyzed with Brayton-cycle engines, and one was analyzed with a Stirling-cycle engine. With these engine options, and the consideration of both thermal and electrical storage for the Brayton-cycle central receiver, 11 systems were formulated for analysis. Conceptual designs developed for the 11 systems were based on common assumptions of available technology in the 1990 to 2000 time frame. No attempt was made to perform a detailed optimization of each conceptual design. Rather, designs best suited for a comparative evaluation of the concepts were formulated. Costs were estimated on the basis of identical assumptions, ground rules, methodologies, and unit costs of materials and labor applied uniformly to all of the concepts. The computer code SOLSTEP was used to analyze the thermodynamic performance characteristics and energy costs of the 11 concepts. Year-long simulations were performed using meteorological and insolation data for Barstow, California. Results for each concept include levelized energy costs and capacity factors for various combinations of storage capacity and collector field size.

Apley, W.J.; Bird, S.P.; Brown, D.R.; Drost, M.K.; Fort, J.A.; Garrett-Price, B.A.; Patton, W.P.; Williams, T.A.

1980-11-01T23:59:59.000Z

114

A Large-Eddy Simulation Study of Wake Propagation and Power Production in an Array of Tidal-Current Turbines: Preprint  

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

Large-Eddy Simulation Study Large-Eddy Simulation Study of Wake Propagation and Power Production in an Array of Tidal- Current Turbines Preprint M.J. Churchfield, Y. Li, and P.J. Moriarty To be presented at the 9 th European Wave and Tidal Energy Conference 2011 Southhampton, England September 4 - 9, 2011 Conference Paper NREL/CP-5000-51765 July 2011 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (Alliance), a contractor of the US Government under Contract No. DE-AC36-08GO28308. Accordingly, the US Government and Alliance retain a nonexclusive royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for US Government purposes. This report was prepared as an account of work sponsored by an agency of the United States government.

115

Northern States Power Co - Minnesota (North Dakota) | Open Energy  

Open Energy Info (EERE)

3781 3781 References EIA Form EIA-861 Final Data File for 2010 - File2_2010[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png D01 Residential Overhead Standard Residential D02 Residential Time of Day Service Residential D12 Small General Service Commercial D14 Small General Time of Day Service Commercial D16 General service Commercial D17 General Time of Day Service Commercial Average Rates Residential: $0.0814/kWh Commercial: $0.0713/kWh Industrial: $0.0564/kWh References ↑ "EIA Form EIA-861 Final Data File for 2010 - File2_2010" Retrieved from "http://en.openei.org/w/index.php?title=Northern_States_Power_Co_-_Minnesota_(North_Dakota)&oldid=412731

116

Northern States Power Co - Minnesota (South Dakota) | Open Energy  

Open Energy Info (EERE)

781 781 References EIA Form EIA-861 Final Data File for 2010 - File2_2010[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png GS (General Service Secondary Voltage) Commercial GS-TOD (General Service Time-Of-Day Secondary) Commercial RS Residential RS-TOD (Residential Service Time Of Day) Residential SGS (Small General Service) Commercial SGS-TOD (Small General Service Time-Of-Day) Average Rates Residential: $0.0968/kWh Commercial: $0.0744/kWh Industrial: $0.0599/kWh References ↑ "EIA Form EIA-861 Final Data File for 2010 - File2_2010" Retrieved from "http://en.openei.org/w/index.php?title=Northern_States_Power_Co_-_Minnesota_(South_Dakota)&oldid=412732

117

Northern States Power Co - Minnesota (North Dakota) | Open Energy  

Open Energy Info (EERE)

Energy North Dakota) Energy North Dakota) Jump to: navigation, search Name Northern States Power Co - Minnesota Place North Dakota Utility Id 13781 References EIA Form EIA-861 Final Data File for 2010 - File2_2010[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png D01 Residential Overhead Standard Residential D02 Residential Time of Day Service Residential D12 Small General Service Commercial D14 Small General Time of Day Service Commercial D16 General service Commercial D17 General Time of Day Service Commercial Average Rates Residential: $0.0814/kWh Commercial: $0.0713/kWh Industrial: $0.0564/kWh References ↑ "EIA Form EIA-861 Final Data File for 2010 - File2_2010"

118

Analysis of Variability and Uncertainty in Wind Power Forecasting: An International Comparison: Preprint  

DOE Green Energy (OSTI)

One of the critical challenges of wind power integration is the variable and uncertain nature of the resource. This paper investigates the variability and uncertainty in wind forecasting for multiple power systems in six countries. An extensive comparison of wind forecasting is performed among the six power systems by analyzing the following scenarios: (i) wind forecast errors throughout a year; (ii) forecast errors at a specific time of day throughout a year; (iii) forecast errors at peak and off-peak hours of a day; (iv) forecast errors in different seasons; (v) extreme forecasts with large overforecast or underforecast errors; and (vi) forecast errors when wind power generation is at different percentages of the total wind capacity. The kernel density estimation method is adopted to characterize the distribution of forecast errors. The results show that the level of uncertainty and the forecast error distribution vary among different power systems and scenarios. In addition, for most power systems, (i) there is a tendency to underforecast in winter; and (ii) the forecasts in winter generally have more uncertainty than the forecasts in summer.

Zhang, J.; Hodge, B. M.; Gomez-Lazaro, E.; Lovholm, A. L.; Berge, E.; Miettinen, J.; Holttinen, H.; Cutululis, N.; Litong-Palima, M.; Sorensen, P.; Dobschinski, J.

2013-10-01T23:59:59.000Z

119

96 IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS, VOL. 12, NO. 1, JANUARY 2004 Managing Power Consumption in Networks on Chips  

E-Print Network (OSTI)

low-power state transitions. Any changes of network wakeup and sleep request arrival rates are tracked, and chooses when to transition the core into one of the available low-power states when the core is idle by transitioning to a low-power state. Our measurements indicate that the distribution of workload idle times has

120

IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS, VOL. 15, NO. 4, APRIL 2007 391 Power and Reliability Management of SoCs  

E-Print Network (OSTI)

's temperature changes due to changes in the workload or during power state transitions, the failure rates due failure rates as a function of different failure mechanisms and power states. B. Failure Mechanisms failure rate to grow due to too frequent switching between the power states. In fact, as each core

De Micheli, Giovanni

Note: This page contains sample records for the topic "large power time-of-day" 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

Northern States Power Co - Minnesota (South Dakota) | Open Energy  

Open Energy Info (EERE)

Northern States Power Co - Minnesota (South Dakota) Northern States Power Co - Minnesota (South Dakota) (Redirected from Xcel Energy South Dakota) Jump to: navigation, search Name Northern States Power Co - Minnesota Place South Dakota Service Territory South Dakota Website www.xcelenergy.com Green Button Landing Page www.xcelenergy.com Green Button Reference Page www.whitehouse.gov/blog/2 Green Button Implemented Yes Utility Id 13781 References EIA Form EIA-861 Final Data File for 2010 - File2_2010[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png GS (General Service Secondary Voltage) Commercial GS-TOD (General Service Time-Of-Day Secondary) Commercial RS Residential RS-TOD (Residential Service Time Of Day) Residential

122

Otter Tail Power Co (North Dakota) | Open Energy Information  

Open Energy Info (EERE)

North Dakota North Dakota Utility Id 14232 References Energy Information Administration.[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png General Service GS 50-401 Commercial Large General Service LGS 50-603 Commercial Large General Service Time of Day 50-611 Commercial Residential Service RS 50-101 Residential Small General Service SGS 50-404 Commercial Average Rates Residential: $0.0772/kWh Commercial: $0.0688/kWh Industrial: $0.0604/kWh The following table contains monthly sales and revenue data for Otter Tail Power Co (North Dakota). Month RES REV (THOUSAND $) RES SALES (MWH) RES CONS COM REV (THOUSAND $) COM SALES (MWH) COM CONS IND_REV (THOUSAND $) IND SALES (MWH) IND CONS OTH REV (THOUSAND $) OTH SALES (MWH) OTH CONS TOT REV (THOUSAND $) TOT SALES (MWH) TOT CONS

123

Torsional Torques and Fatigue Life Expenditure for Large-Scale Steam Turbine-Generator Shafts and Blades Due to Power System Harmonics.  

E-Print Network (OSTI)

??During the three decades, the torsional impact on turbine-generator sets due to power system disturbances has been extensively discussed in many research works. However, most (more)

Tsai, Jong-ian

2004-01-01T23:59:59.000Z

124

A modeling and control framework for operating large-scale electric power systems under present and newly evolving competitive industry structures  

E-Print Network (OSTI)

This paper introduces a systematic, structure-based modeling framework for analysis and control of electric power systems for processes evolving over the mid-term and long-term time horizons. Much simpler models than the ...

Ilic, Marija

1995-01-01T23:59:59.000Z

125

Solar Total Energy System, Large Scale Experiment, Shenandoah, Georgia. Final technical progress report. Volume III. Appendix. [1. 72 MW thermal and 383. 6 kW electric power for 42,000 ft/sup 2/ knitwear plant  

DOE Green Energy (OSTI)

This is the appendix to the Stearns-Roger Engineering Company conceptual design report on ERDA's Large Scale Experiment No. 2 (LSE No. 2). The object of this LSE is to design, construct, test, evaluate and operate a STES for the purpose of obtaining experience with large scale hardware systems and to establish engineering capability for subsequent demonstration projects. This particular LSE is to be located at Shenandoah, Georgia, and will provide power to the Bleyle knitwear factory. Under this contract Stearns-Roger developed a conceptual design, which was site specific, containing the following major elements: System Requirements Analysis, Site Description, System Conceptual Design, Conceptual Test and Operating Plans, Development Plans, Procurement and Management Plans for Subsequent Phases, and Cost Estimates. The Solar Total Energy system is sized to supply 1.720 MW thermal power and 383.6 KW electrical power. The STES is sized for the extended knitwear plant of 3902 M/sup 2/ (42,000 sq-ft) which will eventually employ 300 people. Drawings, tables, and data sheets are included on hourly temperatures, displacement, utility rates, power conversion system, seasonal design load summary, average collector temperature optimization study, system operating temperature optimization study, power conversion system seasonal performance, thermal storage/fluid loop, system integration, and cost estimates. (WHK)

None,

1977-10-17T23:59:59.000Z

126

Power Challenges of Large Scale Research Infrastructures: the Square Kilometer Array and Solar Energy Integration; Towards a zero-carbon footprint next generation telescope  

E-Print Network (OSTI)

The Square Kilometer Array (SKA) will be the largest Global science project of the next two decades. It will encompass a sensor network dedicated to radioastronomy, covering two continents. It will be constructed in remote areas of South Africa and Australia, spreading over 3000Km, in high solar irradiance latitudes. Solar Power supply is therefore an option to power supply the SKA and contribute to a zero carbon footprint next generation telescope. Here we outline the major characteristics of the SKA and some innovation approaches on thermal solar energy Integration with SKA prototypes.

Barbosa, Domingos; Ruiz, Valeriano; Silva, Manuel; Verdes-Montenegro, Lourdes; Santander-Vela, Juande; Maia, Dalmiro; Antn, Sonia; van Ardenne, Arnold; Vetter, Matthias; Kramer, Michael; Keller, Reinhard; Pereira, Nuno; Silva, Vitor

2012-01-01T23:59:59.000Z

127

Meet with Large Businesses  

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

Meet with Large Businesses Meet with Large Businesses and learn about upcoming acquisitions! * Federal Energy Management Program (FEMP) * National Renewable Energy Laboratory (NREL) * Small Business Administration (SBA) * U.S. Department of Energy / Energy, Efficiency, and Renewable Energy (EERE) * U.S. Department of Energy / Golden Field Office (GFO) * Western Area Power Administration (WAPA) * Colorado Procurement Technical Assistance Center (PTAC)

128

Data:365dadd2-400e-4413-b717-6c0e1a864369 | Open Energy Information  

Open Energy Info (EERE)

Comm Effective date: 20110601 End date if known: Rate name: Cp-4 Large Industrial Power Time-of-Day Service Transformer Ownership Discount Sector: Industrial Description:...

129

Data:435142b2-67c9-47e4-a472-f6a0f573472f | Open Energy Information  

Open Energy Info (EERE)

(Utility Company) Effective date: 20080411 End date if known: Rate name: Cp-2 Large Power Time-of-Day Service Transformer Ownership Discount Sector: Industrial Description:...

130

The analysis and specification of large high-pressure, high-temperature valves for combustion turbine protection in second-generation PFB power plants: Topical report  

SciTech Connect

The purpose of this study was to provide a specification for the high-pressure/high-temperature valves for turbine overspeed protection in a commercial-scale second-generation pressurized fluidized bed combustion (PFBC) power plant. In the event of a loss of external (generator) load, the gas turbine rapidly accelerates from its normal operating speed. Protection from excessive overspeed can be maintained by actuation of fuel isolation and air bypass valves. A design specification for these valves was developed by analyses of the turbine/compressor interaction during a loss of load and analyses of pressure and flow transients during operation of the overspeed protection valves. The basis for these analyses was the Phase 1 plant conceptual design prepared in 1987.

1994-08-01T23:59:59.000Z

131

Power Tower Systems for Concentrating Solar Power  

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

In power tower concentrating solar power systems, numerous large, flat, sun-tracking mirrors, known as heliostats, focus sunlight onto a receiver at the top of a tall tower. A heat-transfer fluid...

132

Assessment of generic solar thermal systems for large power applications. Volume II. Analysis of thermal energy production costs for systems from 50 to 600 MWt  

SciTech Connect

A comparative analysis of solar thermal concepts that are potentially suitable for development as large process heat systems (50 to 600 MWt) was performed. The concepts considered can be classified into three categories based on the type of solar tracking used by the collector: (1) two-axis tracking, in which concentrators track the sun's motion in both azimuth and altitude; (2) one-axis tracking, in which concentrators track changes in either azimuth or altitude; and (3) non-tracking, in which the concentrators are fixed. Seven generic types of collectors were considered. Conceptual designs developed for the seven systems were based on common assumptions of available technology in the 1990 to 2000 time frame. Costs were estimated on the basis of identical assumptions, ground rules, methodologies, and unit costs of materials and labor applied uniformly to all of the concepts.

Bird, S.P.; Apley, W.J.; Barnhart, J.S.; Brown, D.R.; Drost, M.K.; Fort, J.A.; Garrett-Price, B.A.; Williams, T.A.

1981-06-01T23:59:59.000Z

133

Assessment of generic solar thermal systems for large power applications. Volume II. Analysis of thermal energy production costs for systems from 50 to 600 MWt  

DOE Green Energy (OSTI)

A comparative analysis of solar thermal concepts that are potentially suitable for development as large process heat systems (50 to 600 MWt) was performed. The concepts considered can be classified into three categories based on the type of solar tracking used by the collector: (1) two-axis tracking, in which concentrators track the sun's motion in both azimuth and altitude; (2) one-axis tracking, in which concentrators track changes in either azimuth or altitude; and (3) non-tracking, in which the concentrators are fixed. Seven generic types of collectors were considered. Conceptual designs developed for the seven systems were based on common assumptions of available technology in the 1990 to 2000 time frame. Costs were estimated on the basis of identical assumptions, ground rules, methodologies, and unit costs of materials and labor applied uniformly to all of the concepts.

Bird, S.P.; Apley, W.J.; Barnhart, J.S.; Brown, D.R.; Drost, M.K.; Fort, J.A.; Garrett-Price, B.A.; Williams, T.A.

1981-06-01T23:59:59.000Z

134

Study the power flow control of a power system with unified power flow controller.  

E-Print Network (OSTI)

??Electrical power systems is a large interconnected network that requires a careful design to maintain the system with continuous power flow operation without any limitations. (more)

Peesari, Vakula

2010-01-01T23:59:59.000Z

135

Data:C3acd8f8-c0ab-44cb-893f-da78ec09bcc2 | Open Energy Information  

Open Energy Info (EERE)

Rate name: Cp-2 Large Power Time-of-Day Service Sector: Industrial Description: Power Cost Adjustment Clause - All metered rates shall be subject to a positive or negative power...

136

Ohio Power Co | Open Energy Information  

Open Energy Info (EERE)

Power Co Power Co Place Ohio Website www.aepohio.com Utility Id 14006 Utility Location Yes Ownership I NERC Location RFC NERC RFC Yes RTO PJM Yes Operates Generating Plant Yes Activity Generation Yes Activity Transmission Yes Activity Buying Transmission Yes Activity Distribution Yes Activity Wholesale Marketing Yes Alt Fuel Vehicle Yes Alt Fuel Vehicle2 Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] Energy Information Administration Form 826[2] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png GS-1 (Small General Service) Commercial GS-2 (Medium General Service Secondary) Commercial GS-TOD Commercial GS-TOD (General Service Time-Of-Day) Commercial

137

Power and Frequency Control as it Relates to Wind-Powered Generation  

E-Print Network (OSTI)

of large amounts of wind power production might requirewill be satisfactory as wind power provides an increasing64 7.2 Wind Power in Relation to System

Lacommare, Kristina S H

2011-01-01T23:59:59.000Z

138

Green Power Network: Large Purchasers of Green Power  

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

Resources Other World Computing Owens Corning PECO Energy Company PGA Tour Pacific Gas and Electric Company Parsons Brinckerhoff Participant Productions Pasta Prima...

139

Development of a RELAP5-3D three-dimensional model of a VVER-1000 Nuclear Power Plant for analysis of a large-break loss-of-coolant accident  

E-Print Network (OSTI)

In order to analyze the benefits of the multi-dimensional hydrodynamic modeling capability of the RELAP5-3D system code in the VVER-1000 Nuclear Power Plant, a three-dimensional model of the core, downcomer, and lower plenum have been created to replace their one-dimensional counterparts in a complete plant model. This multi-dimensional model has been validated with plant operational data and other computer simulations of a thermal-hydraulic transient. The simulated transient considered was a large-break loss-of-coolant accident (LB LOCA). A validated, one-dimensional control of the nuclear power plant, for the study of the effects of mixed oxide (MOX) fuel, was modified to include a standard fuel loading of UO?. The development of the three-dimensional sections of the reactor vessel consisted of ensuring geometrical fidelity with the design of the modeled plant, the Balacovo Unit 4, Nuclear Power Plant in Saratov, Russia. A stable operational steady-state was obtained and the calculated plant conditions compared well with the design values of the Balacovo Plant. Transient results verified that the simulated thermal-hydraulic conditions of the multi-dimensional model agreed well with both the control and analyses that have been performed separately from this report. It was found that the multi-dimensional model has shown a reduction in the calculated hot-spot peak-clad temperature (PCT) during the blowdown stage of a LB LOCA and an increase in PCT during the reflood stage. A preliminary uncertainty analysis of the PCT during blowdown stage was performed using a response surface method of the Code Scaling, Applicability, and Uncertainty Method and a significant number of relevant input variables. From the preliminary analysis, the PCT reduction during blowdown appears to be significant, but a further, more detailed analysis should be performed, along with an uncertainty analysis of the PCT during the reflood stage. The enhanced depiction of the flow patterns and temperature distributions in the transient situation allowed the user further understanding of the thermal-hydraulic conditions throughout the transient. The developed model proved to be suitable for analysis of the VVER-1000 plant, but to further the applicability of the model a three-dimensional kinetics model of the neutronics and three-dimensional hydrodynamic models of the horizontal steam generators should be included.

Clarno, Kevin Taylor

2001-01-01T23:59:59.000Z

140

Northern States Power Co - Minnesota (South Dakota) | Open Energy  

Open Energy Info (EERE)

Northern States Power Co - Minnesota (South Dakota) Northern States Power Co - Minnesota (South Dakota) (Redirected from Northern States Power Co (South Dakota)) Jump to: navigation, search Name Northern States Power Co - Minnesota Place South Dakota Service Territory South Dakota Website www.xcelenergy.com Green Button Landing Page www.xcelenergy.com Green Button Reference Page www.whitehouse.gov/blog/2 Green Button Implemented Yes Utility Id 13781 References EIA Form EIA-861 Final Data File for 2010 - File2_2010[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png GS (General Service Secondary Voltage) Commercial GS-TOD (General Service Time-Of-Day Secondary) Commercial RS Residential

Note: This page contains sample records for the topic "large power time-of-day" 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

Power supply  

SciTech Connect

An electric power supply employs a striking means to initiate ferroelectric elements which provide electrical energy output which subsequently initiates an explosive charge which initiates a second ferroelectric current generator to deliver current to the coil of a magnetic field current generator, creating a magnetic field around the coil. Continued detonation effects compression of the magnetic field and subsequent generation and delivery of a large output current to appropriate output loads.

Hart, Edward J. (Albuquerque, NM); Leeman, James E. (Albuquerque, NM); MacDougall, Hugh R. (Albuquerque, NM); Marron, John J. (Albuquerque, NM); Smith, Calvin C. (Amarillo, TX)

1976-01-01T23:59:59.000Z

142

Superconducting Power Cables  

Science Conference Proceedings (OSTI)

Power cables constructed from superconducting materials are being realized in utility demonstrations within the United States. Cooled by liquid nitrogen, high temperature superconducting power cables can transfer large amounts of power through relatively small cross sections. The key to their high power capacity is the high current density inherent with superconductors; a superconducting wire can conduct several times as much current as copper or aluminum conductors of the same cross section. For the pas...

2006-11-30T23:59:59.000Z

143

Energy Department Loan Guarantee Would Support Large-Scale Rooftop...  

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

Loan Guarantee Would Support Large-Scale Rooftop Solar Power for U.S. Military Housing Energy Department Loan Guarantee Would Support Large-Scale Rooftop Solar Power for U.S....

144

NETL: Water-Energy Interface - Power Plant Water Management  

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

Use of Air2Air™ Technology to Recover Fresh-Water from the Normal Evaporative Cooling Loss at Coal-Based Thermoelectric Power Plants – SPX Cooling Systems Use of Air2Air™ Technology to Recover Fresh-Water from the Normal Evaporative Cooling Loss at Coal-Based Thermoelectric Power Plants – SPX Cooling Systems In this project, SPX Cooling Systems, formerly Marley Cooling Technologies, Inc., evaluates the performance of its patented Air2Air(tm) condensing technology in cooling tower applications at coal-fired electric power plants. Researchers quantify Air2Air(tm) water conservation capabilities with results segmented by season and time of day. They determine the pressure drop and energy use during operation. Additionally, SPX Cooling Systems develops a collection method for the recovered water, analyzes water quality, and identifies potential on-site processes capable of utilizing the recovered water.

145

Northern States Power Co - Minnesota (South Dakota) | Open Energy  

Open Energy Info (EERE)

Northern States Power Co - Minnesota (South Dakota) Northern States Power Co - Minnesota (South Dakota) (Redirected from Xcel Energy of South Dakota) Jump to: navigation, search Name Northern States Power Co - Minnesota Place South Dakota Service Territory South Dakota Website www.xcelenergy.com Green Button Landing Page www.xcelenergy.com Green Button Reference Page www.whitehouse.gov/blog/2 Green Button Implemented Yes Utility Id 13781 References EIA Form EIA-861 Final Data File for 2010 - File2_2010[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png GS (General Service Secondary Voltage) Commercial GS-TOD (General Service Time-Of-Day Secondary) Commercial RS Residential

146

Wind Power Ltd | Open Energy Information  

Open Energy Info (EERE)

Power Ltd Place Wickam Market, United Kingdom Sector Wind energy Product Conducting research into alternative, large scale wind turbine design. References Wind Power Ltd1...

147

Browse wiki | Open Energy Information  

Open Energy Info (EERE)

6 Applicable to Large Power Time of Day Interruptible Service; Rate Code 16: As of the Test Year ending December 2000, the Cooperative purchases capacity and energy for the Large...

148

PowerPoint Presentation  

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

Market Monitoring Market Monitoring Tools Bernie Lesieutre - LBNL Bob Thomas - Cornell October 18, 2006 Washington, D.C. OE Visualization and Controls Peer Review Market Monitoring Tools: Overview Approach: Use dispatch, profit, revenue/offer price, withholding sensitivities to identify opportunities for local advantage that give some participants market power potential. 2006 Technical Work: Extend prior results to large, RTO-scale systems. Initiate large-scale analysis with RTO (PJM). Evaluate reactive power effects on energy markets. Publication and presentation of results. Market Power: Substitutability Market power boils down to the issue of substitutability Locational Advantage: "Load Pockets" Physical network constraints limit supply to certain loads, so that the incremental demand

149

OUT Success Stories: Power Towers  

DOE Green Energy (OSTI)

Power towers convert the thermal energy of the sun to electricity. They are large-scale power plants producing clean energy and suited for operation in sunny, semi-arid regions of the world.

Jones, J.

2000-08-31T23:59:59.000Z

150

Taking the 'Large' out of Large Hadron Collider: Computational Breakthrough  

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

Home » News & Publications » News » Science News » Taking the 'Large' out of Large Hadron Collider Taking the 'Large' out of Large Hadron Collider Computational breakthrough hastens modeling of 'tabletop accelerators' August 9, 2010 | Tags: Accelerator Science Contact: Margie Wylie | mwylie@lbl.gov | 510-486-7421 mori1 This 3D simulation shows how laser pulses create plasma wakes that propel electrons forward, much as a surfer is propelled forward by an ocean wave. Laser wakefield acceleration promises electron accelerators that are thousands of times more powerful than, yet a fraction the size of, conventional radio frequency devices. Particle accelerators like the Large Hadron Collider (LHC) at CERN are the big rock stars of high-energy physics-really big. The LHC cost nearly

151

Crowd-powered systems  

E-Print Network (OSTI)

Crowd-powered systems combine computation with human intelligence, drawn from large groups of people connecting and coordinating online. These hybrid systems enable applications and experiences that neither crowds nor ...

Bernstein, Michael Scott

2012-01-01T23:59:59.000Z

152

Power Operations  

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

Power Operations Outage Coordination Standards of Conduct Transmission Planning You are here: SN Home page > Power Operations Power Operations Western's Sierra Nevada Region...

153

Solar Total Energy System: Large Scale Experiment, Shenandoah, Georgia. Final technical progress report. Volume I. Section 1. Conclusions and recommendations. Section 2. Systems requirements. [1. 72-MW thermal and 383. 6-kW electric power for 42,000 ft/sup 2/ knitwear plant  

DOE Green Energy (OSTI)

The Stearns-Roger Engineering Company conceptual design of ERDA's Large Scale Experiment No. 2 (LSE No. 2) is described. The various LSE's are part of ERDA's Solar Total Energy Program (STES) and a separate activity of the National Solar Thermal Power Systems Program. The object of this LSE is to design, construct, test, evaluate and operate a STES for the purpose of obtaining experience with large scale hardware systems and to establish engineering capability for subsequent demonstration projects. This particular LSE is to be located at Shenandoah, Georgia and will provide power to the Bleyle knitwear factory. The Solar Total Energy system is sized to supply 1.720 MW thermal power (both space heating and process heat) and 383.6 KW electrical power. The STES is sized for the extended knitwear plant of 3902 M/sup 2/ (42,000 sq-ft) which will eventually employ 300 people. The section on conclusions and recommendations described the baseline design recommendation, facility requirements, the solar system, power conversion system, schedules and cost, and additional candidate systems. The systems requirements analysis includes detailed descriptions and analyses of the following subtasks: load analysis, energy displacement, local laws and ordinances, life cycle cost, health and safety, environmental assessment, reliability assessment, and utility interface. (WHK)

None,

1977-10-17T23:59:59.000Z

154

Solar Total Energy System, Large Scale Experiment, Shenandoah, Georgia. Final technical progress report. Volume II, Section 3. Facility concept design. [1. 72 MW thermal and 383. 6 kW electric power for 42,000 ft/sup 2/ knitwear plant  

DOE Green Energy (OSTI)

The Stearns-Roger Engineering Company conceptual design of ERDA's Large Scale Experiment No. 2 (LSE No. 2) is presented. The various LSEs are part of ERDA's Solar Total Energy Program (STES) and a separate activity of the National Solar Thermal Power Systems Program. The object of this LSE is to design, construct, test, evaluate and operate a STES for the purpose of obtaining experience with large scale hardware systems and to establish engineering capability for subsequent demonstration projects. This particular LSE is to be located at Shenandoah, Georgia, and will provide power to the Bleyle knitwear factory. The Solar Total Energy system is sized to supply 1.720 MW thermal power and 383.6 KW electrical power. The STES is sized for the extended knitwear plant of 3902 M/sup 2/ (42,000 sq-ft) which will eventually employ 300 people. The details of studies conducted for Phase II of the Solar Total Energy System (STES) for the conceptual design requirements of the facility are presented. Included in this section are the detailed descriptions and analyses of the following subtasks: facility concept design, system concept design, performance analysis, operation plan, component and subsystem development, procurement plan, cost estimating and scheduling, and technical and management plans. (WHK)

None,

1977-10-17T23:59:59.000Z

155

Power quality - Utilities begin to set up monitoring networks  

SciTech Connect

The time of day at which power-quality problems occur, and their coincidence with other events on the electrical system, are two of the earliest clues to the source of the problem. Today, utilities are beginning to answer customer complaints by installing networks of power-monitoring devices and showing the customer how to use the data they supply. A monitoring network often provides the additional benefit of enabling an engineer to anticipate power-quality problems before the begin to affect production. Advanced electronic packaging allows power-quality monitors to perform three functions that originally required several different instruments: Transient recording and analysis; Harmonics analysis; and, Power measurement-including demand, kilowatt-hours, VArs, power factor, etc. There is a wide range of power-quality monitors on the market with a confusing array of capabilities. The problem is complicated by the frequent introduction of new models, designed to meet specific applications at the lowest possible cost. This paper describes the important features to look for, which include: sampling rate, peak detection, channels, communications, environmental capability, analysis, protocols, and portability. 3 figs.

Reason, J.

1995-12-01T23:59:59.000Z

156

Desalination Study of Florida Power & Light Power Plants  

Science Conference Proceedings (OSTI)

This report documents a project sponsored jointly by EPRI and Florida Power & Light (FPL) to determine the viability of converting existing power plants to large-scale, dual-purpose cogeneration of power and fresh water from desalination. Of four desalination processes studied, reverse osmosis offered the lowest product water cost.

1992-12-18T23:59:59.000Z

157

Power Politics: The Political Economy of Russia's Electricity Sector Liberalization  

E-Print Network (OSTI)

the countrys thermal power plants: in the power generationMDM. The large thermal power plants, such as Kuzbassenergo,electric power plants and the largest and newest thermal

Wenle, Susanne Alice

2010-01-01T23:59:59.000Z

158

Interline Photovoltaic (I-PV) power system - A novel concept of power flow control and management  

E-Print Network (OSTI)

This paper presents a new system configuration for a large-scale Photovoltaic (PV) power system with multi-line transmission/distribution networks. A PV power plant is reconfigured in a way that two adjacent power system ...

Khadkikar, Vinod

159

Data:6ac7935a-b5a4-4360-92c4-a274028d7e78 | Open Energy Information  

Open Energy Info (EERE)

Utility Comm Effective date: 20110601 End date if known: Rate name: Cp-2 Large Power Time-of-Day Service Transformer Ownership Discount with Parallel Generation(20kW or...

160

Data:B1373fb0-444e-46d1-925f-72d37c7e4a39 | Open Energy Information  

Open Energy Info (EERE)

(Utility Company) Effective date: 20080411 End date if known: Rate name: Cp-2 Large Power Time-of-Day Service Transformer Ownership Discount with Parallel Generation(20kW or...

Note: This page contains sample records for the topic "large power time-of-day" 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

Data:0f0c5294-9f0b-4a84-8337-89b34a0caa2f | Open Energy Information  

Open Energy Info (EERE)

Rate name: Cp-4 Large Industrial Power Time-of-Day Service Primary Metering and Transformer Ownership Discount with Parallel Generation(20kW or less) Sector: Industrial...

162

Solar power towers  

DOE Green Energy (OSTI)

The high desert near Barstow, California, has witnessed the development of this country's first two solar power towers. Solar One operated successfully from 1982 to 1988 and proved that power towers work efficiently to produce utility-scale power from sunlight. Solar Two was connected to the utility grid in 1996 and is operating today. Like its predecessor, Solar Two is rated at 10 megawatts. An upgrade of the Solar One plant, Solar Two demonstrates how solar energy can be stored in the form of heat in molten salt for power generation on demand. The experience gained with these two pilot power towers has established a foundation on which industry can develop its first commercial plants. These systems produce electricity on a large scale. They are unique among solar technologies because they can store energy efficiently and cost effectively. They can operate whenever the customer needs power, even after dark or during cloudy weather.

NONE

1998-04-01T23:59:59.000Z

163

Solar power towers  

DOE Green Energy (OSTI)

The high desert near Barstow, California, has witnessed the development of this country`s first two solar power towers. Solar One operated successfully from 1982 to 1988 and proved that power towers work efficiently to produce utility-scale power from sunlight. Solar Two was connected to the utility grid in 1996 and is operating today. Like its predecessor, Solar Two is rated at 10 megawatts. An upgrade of the Solar One plant, Solar Two demonstrates how solar energy can be stored in the form of heat in molten salt for power generation on demand. The experience gained with these two pilot power towers has established a foundation on which industry can develop its first commercial plants. These systems produce electricity on a large scale. They are unique among solar technologies because they can store energy efficiently and cost effectively. They can operate whenever the customer needs power, even after dark or during cloudy weather.

Not Available

1998-04-01T23:59:59.000Z

164

Large-Eddy Simulation: How Large is Large Enough?  

Science Conference Proceedings (OSTI)

The length scale evolution of various quantities in a clear convective boundary layer (CBL), a stratocumulus-topped boundary layer, and three radiatively cooled (smoke cloud) convective boundary layers are studied by means of large-eddy ...

Stephan R. de Roode; Peter G. Duynkerke; Harm J. J. Jonker

2004-02-01T23:59:59.000Z

165

Jersey Central Power & Lt Co | Open Energy Information  

Open Energy Info (EERE)

(Redirected from JCP&L) (Redirected from JCP&L) Jump to: navigation, search Name Jersey Central Power & Lt Co Place Ohio Utility Id 9726 Utility Location Yes Ownership I NERC Location RFC NERC RFC Yes RTO PJM Yes Operates Generating Plant Yes Activity Generation Yes Activity Transmission Yes Activity Buying Transmission Yes Activity Distribution Yes Activity Wholesale Marketing Yes Alt Fuel Vehicle Yes Alt Fuel Vehicle2 Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] Energy Information Administration Form 826[2] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png GS (General Service) Commercial GST (General Service Time-Of-Day) Commercial

166

Operational Experience of Large Sized ESR Plants and Attainable ...  

Science Conference Proceedings (OSTI)

... the field of remelting was mainly characterized by the commissioning of large ... the nuclear power industry to complex chromium martensitic stainless steels...

167

Economic and Performance Benefits Resulting From the Use of Large...  

Open Energy Info (EERE)

of Large Diameter Fans on Air Cooled Heat Exchangers (A Case Study in the Use of Large Fan Air Cooled Condensers at the Neal Hot Springs Geothermal Power Plant, Oregon) Jump to:...

168

Fuel Cell Portable Power  

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

Power Power Department of Energy Workshop January 17, 2002 2 Portable Markets - Table of Contents 1. Opportunity Summary for Portable Markets 2. Commercialization Path and Resource Map 3. Value Chain Issues 4. Ballard "State of the Art" 5. Fuel Options and Issues 6. Where can the D.O.E. Help 3 Opportunity Summary - Portable Markets Infrequent Frequent Typical Applications Backup - Batteries & Gensets Peaking power and seasonal use; mobile power Preferred Fuels Hydrocarbon & Hydrogen Hydrocarbon (H2?) Total Available Market Large - But Fractured into many apps Moderate Price Target Low (Pockets willing to pay high $ for certain attributes) Moderate (Lifecycle) Environmental Impact Low Moderate Timing Short term Mid term 4 Technical Challenge Low High Micro Markets H2 Backup Power HC Frequent

169

NREL: TroughNet - Parabolic Trough Power Plant Market, Economic...  

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

Parabolic Trough Power Plant Market, Economic Assessment and Deployment Parabolic trough technology is the most commercially mature, large-scale solar power technology in the...

170

Analysis of Wind Power Ramping Behavior in ERCOT  

DOE Green Energy (OSTI)

This report analyzes the wind power ramping behavior using 10-minute and hourly average wind power data from ERCOT and presents statistical properties of the large ramp events.

Wan, Y. H.

2011-03-01T23:59:59.000Z

171

Delaware's At-large congressional district: Energy Resources | Open Energy  

Open Energy Info (EERE)

Delaware's At-large congressional district: Energy Resources Delaware's At-large congressional district: Energy Resources Jump to: navigation, search Equivalent URI DBpedia This article is a stub. You can help OpenEI by expanding it. This page represents a congressional district in Delaware. Registered Energy Companies in Delaware's At-large congressional district AstroPower Inc Building Media, Inc. (Du Pont) (Building America Retrofit Alliance) Butamax Advanced Biofuels LLC Citizenre Group Delmarva Power Light Company Delmarva Power DuPont DuPont Biofuels Dupont Fuel Cells Galt Power Inc GlobalWatt Inc Ion Power Inc Naveen Energy Hydra Energy LLC O2Diesel Corporation formerly Dynamic Ventures RNK Capital LLC Sentry Power LLC Sentry Power Technology Textronics Inc Tristabella Consulting LLC University of Delaware Registered Financial Organizations in Delaware's At-large congressional

172

Comment on "Air Emissions Due to Wind and Solar Power" and Supporting Information  

E-Print Network (OSTI)

H. On methodology for modelling wind power impact on powerwith Large Amounts of Wind Power; VTT Working Paper 82,The Effects of Integrating Wind Power on Transmission System

Mills, Andrew D.

2011-01-01T23:59:59.000Z

173

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

E-Print Network (OSTI)

correlation between adjacent wind power plants, Journal of9] H. Holttinen, Hourly wind power variations in the nordicwith large amounts of wind power, VTT, Espoo, Final Report,

Mills, Andrew

2013-01-01T23:59:59.000Z

174

Climate VISION: Private Sector Initiatives: Electric Power: Resources and  

Office of Scientific and Technical Information (OSTI)

Electric Power Industry Climate Initiative (EPICI) Members Electric Power Industry Climate Initiative (EPICI) Members American Public Power Association American Public Power Association Logo The American Public Power Association (APPA) is the service organization for the nation's public power utilities. Edison Electric Institute Edison Electric Institute Logo Edison Electric Institute (EEI) is the premier trade association for U.S. shareholder-owned electric companies, and serves international affiliates and industry associates worldwide. Electric Power Supply Association Electric Power Supply Association Logo The Electric Power Supply Association (EPSA) is the national trade association representing competitive power suppliers, including independent power producers, merchant generators, and power marketers. Large Public Power Council

175

Implementing Virtual Buffer for Electric Power Grids  

Science Conference Proceedings (OSTI)

The electric power grid is a vital network for every aspect of our life. The lack of buffer between generation and consumption makes the power grid unstable and fragile. While large scale power storage is not technically and economically feasible at ... Keywords: Artificial Intelligence, Dynamic Data Driven, Electric Power Grid

Rong Gao; Lefteri H. Tsoukalas

2007-05-01T23:59:59.000Z

176

Power Electronics  

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

Power electronics (PE) play a critical role in transforming the current electric grid into the next-generation grid. PE enable utilities to deliver power to their customers effectively while...

177

Wind Power  

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

Power As the accompanying map of New Mexico shows, the best wind power generation potential near WIPP is along the Delaware Mountain ridge line of the southern Guadalupe Mountains,...

178

High Plains Power Inc | Open Energy Information  

Open Energy Info (EERE)

High Plains Power Inc High Plains Power Inc Place Wyoming Utility Id 8566 Utility Location Yes Ownership C NERC Location WECC NERC WECC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] Energy Information Administration Form 826[2] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png IRRIGATION Industrial LARGE POWER 500kW OR GREATER TIME OF USE Industrial LARGE POWER DISTRIBUTION SUBSTATION GREATER THAN 500kW LEVEL SERVICE Industrial LARGE POWER DISTRIBUTION SUBSTATION LESS THAN 500kW LEVEL SERVICE Industrial LARGE POWER THREE PHASE DISTRIBUTION PRIMARY LEVEL SERVICE Industrial LARGE POWER THREE PHASE DISTRIBUTION PRIMARY LEVEL SERVICE V2 Industrial

179

Power Supplies  

Science Conference Proceedings (OSTI)

Figure: ...Fig. 5 Typical medium-frequency induction power supply incorporating (a) a parallel inverter and (b) a series inverter...

180

Pulsed Power Technology and Applications -- Scandinavia  

Science Conference Proceedings (OSTI)

Pulsed power is a new and promising technology with a large number of potential applications. In addition to existing and future pulsed power supply and technology in Scandinavia and Europe, this report also describes present and future applications.

1999-04-19T23:59:59.000Z

Note: This page contains sample records for the topic "large power time-of-day" 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

NREL: Learning - Concentrating Solar Power Basics  

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

Concentrating Solar Power Basics Many power plants today use fossil fuels as a heat source to boil water. The steam from the boiling water spins a large turbine, which drives a...

182

Power supply  

DOE Patents (OSTI)

A modular, low weight impedance dropping power supply with battery backup is disclosed that can be connected to a high voltage AC source and provide electrical power at a lower voltage. The design can be scaled over a wide range of input voltages and over a wide range of output voltages and delivered power.

Yakymyshyn, Christopher Paul (Seminole, FL); Hamilton, Pamela Jane (Seminole, FL); Brubaker, Michael Allen (Loveland, CO)

2007-12-04T23:59:59.000Z

183

Role of nuclear power in the Philippine power development program  

SciTech Connect

The reintroduction of nuclear power in the Philippines is favored by several factors such as: the inclusion of nuclear energy in the energy sector of the science and technology agenda for national development (STAND); the Large gap between electricity demand and available local supply for the medium-term power development plan; the relatively lower health risks in nuclear power fuel cycle systems compared to the already acceptable power systems; the lower environmental impacts of nuclear power systems compared to fossil fuelled systems and the availability of a regulatory framework and trained personnel who could form a core for implementing a nuclear power program. The electricity supply gap of 9600 MW for the period 1993-2005 could be partly supplied by nuclear power. The findings of a recent study are described, as well as the issues that have to be addressed in the reintroduction of nuclear power.

Aleta, C.R. [Philippine Nuclear Research Institite, Quezon City (Philippines)

1994-12-31T23:59:59.000Z

184

Optimizing Power Factor Correction  

E-Print Network (OSTI)

The optimal investment for power factor correcting capacitors for Kansas Power and Light Company large power contract customers is studied. Since the billing capacity is determined by dividing the real demand by the power factor (the minimum billing capacity is based on 80 percent of the summer peak billing capacity) and the billing capacity is used to determine the number of kilowatt-hours billed at each pricing tier, the power factor affects both the demand and the energy charge. There is almost no information available in the literature concerning recommended power factor corrections for this situation. The general advice commonly given in the past has been that power factor should be corrected to above 0.9 if it is below that value to begin with, but that does not take into account the facts of the situation studied here. Calculations relevant to a commercial consumer of electricity were made for demands of 200, 400, 800, 1,600, 3,200, and 6,400 kW and monthly energy consumption periods of 100, 150, 200, 300, 400, and 500 hours for several capacitor purchase and installation costs. The results are displayed in a series of graphs that enable annual cost savings and payback periods to be readily determined over a range of commonly encountered parameter values. It is found that it is often economically advantageous to correct a power factor to near unity.

Phillips, R. K.; Burmeister, L. C.

1986-06-01T23:59:59.000Z

185

Running Large Scale Jobs  

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

NERSC Powering Scientific Discovery Since 1974 Login Site Map | My NERSC search... Go Home About Overview NERSC Mission Contact us Staff Org Chart NERSC History NERSC Stakeholders...

186

Large Mass Calibration  

Science Conference Proceedings (OSTI)

... carefully than the nuclear waste produced at power plants and elsewhere. ... the new standards, and the implementation of statistical process control ...

2013-03-12T23:59:59.000Z

187

Large displacement spherical joint  

DOE Patents (OSTI)

A new class of spherical joints has a very large accessible full cone angle, a property which is beneficial for a wide range of applications. Despite the large cone angles, these joints move freely without singularities.

Bieg, Lothar F. (Albuquerque, NM); Benavides, Gilbert L. (Albuquerque, NM)

2002-01-01T23:59:59.000Z

188

Power Systems Operation Planning Optimization.  

E-Print Network (OSTI)

??Optimal hydrothermal power dispatch on a multi-area network is a large-scale non-linear problem. Its objective is to find the optimal generation schedule of hydro and (more)

FRAGOMENI, UMBERTO

2013-01-01T23:59:59.000Z

189

Electrokinetic Effects in Power Transformers  

Science Conference Proceedings (OSTI)

Electrokinetic effects such as static electrification can cause catastrophic failures in large forced-oil-cooled power transformers. The development of a network-based theoretical model provides a critical perspective not apparent from previous small-scale laboratory experiments.

1999-08-10T23:59:59.000Z

190

Power options for lunar exploration  

DOE Green Energy (OSTI)

This paper presents an overview of the types of power systems available for providing power on the moon. Lunar missions of exploration, in situ resource utilization, and colonization will be constrained by availability of adequate power. The length of the lunar night places severe limitations on solar power system designs, because a large portion of the system mass is devoted to energy storage. The selection of the ideal power source hardware will require compatibility with not only the lunar base power requirements and environment, but also with the conversion, storage, and transmission equipment. In addition, further analysis to determine the optimum operating parameters for a given power system should be conducted so that critical technologies can be identified in the early stages of base development. This paper describes the various concepts proposed for providing power on the lunar surface and compare their ranges of applicability. The importance of a systems approach to the integration of these components will also be discussed.

Bamberger, J.A.; Gaustad, K.L.

1992-01-01T23:59:59.000Z

191

Impact of Large Scale Energy Efficiency Programs On Consumer Tariffs and Utility Finances in India  

E-Print Network (OSTI)

as sources of low-cost baseload power. 4.6.3 LargeScaleEEb is the variable cost of baseload power purchases, and L isbut simply avoids baseload power purchases. Utilities that

Abhyankar, Nikit

2011-01-01T23:59:59.000Z

192

PowerSleep: A Smart Power-Saving Scheme with Sleep for Servers under Response Time Constraint  

E-Print Network (OSTI)

to handle the dominant idle time by quickly transitioning in and out of a low power sleep mode. Under Power PowerNap significantly, in particular when the single mode transition overhead is large. In the study is in the transition mode. The power consumption in our study is the system-level power, including the power consumed

Wang, Shengquan

193

DOE Hydrogen Analysis Repository: Wind Power Integration  

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

Project Summary Full Title: Large-Scale Integration of Wind Power into Different Energy Systems Project ID: 124 Principal Investigator: Henrik Lund Purpose The analysis...

194

Transmission planning in deregulated power markets.  

E-Print Network (OSTI)

??Transmission systems in deregulated power systems have largely been left to centralized network operators although various forms of participation by merchant operators have been proposed. (more)

Panambarage Anton Jagath Fonseka.

2008-01-01T23:59:59.000Z

195

NREL: Concentrating Solar Power Projects Home Page  

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

of concentrating solar power plants. Activities include testing large-scale systems and developing advanced technologies, components, instrumentation, and analysis techniques....

196

Aerosol nucleation in coal-fired power-plant plumes  

Science Conference Proceedings (OSTI)

New-particle nucleation within coal-fired power-plant plumes can have large effects on particle number concentrations

2013-01-01T23:59:59.000Z

197

Putting Economic Power In Distributed Power t  

U.S. Energy Information Administration (EIA)

Putting Economic Power in Distributed Power. A distributed electricity generation system, often called distributed power, usually consists of ...

198

Power Politics: The Political Economy of Russia's Electricity Sector Liberalization  

E-Print Network (OSTI)

Sayano-Shushenskaia Hydroelectric Power Plant is Siberias only large power plant in which UES (and now Hydro-OGKs)important regional power plants. 424 As with the conflict

Wenle, Susanne Alice

2010-01-01T23:59:59.000Z

199

Power Politics: The Political Economy of Russia's Electricity Sector Liberalization  

E-Print Network (OSTI)

tariffs/ in the electric power industry; gas industry;of the regions hydro-electric power. Unlike in Europeanshould the large hydro-electric power plants be admitted to

Wengle, Susanne Alice

2010-01-01T23:59:59.000Z

200

Wind Power: How Much, How Soon, and At What Cost?  

E-Print Network (OSTI)

Evaluation of Global Wind Power." Journal of Geophysical2008. "The Economics of Wind Power with Energy Storage."Economics of Large-Scale Wind Power in a Carbon Constrained

Wiser, Ryan H

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "large power time-of-day" 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

Trojan PWR Decommissioning: Large Component Removal Project  

Science Conference Proceedings (OSTI)

While the decommissioning of large commercial nuclear plants in the United States is in its infancy, the technical challenges with associated radioactive waste management are clear. This report describes the removal and disposal of four steam generators and one pressurizer from the Trojan nuclear power plant, the first large PWR to be decommissioned in the United States. The report chronicles the problems, successes, and lessons learned in this project, which was completed on schedule and under budget in...

1997-09-29T23:59:59.000Z

202

The Impact of Wind Power Projects on Residential Property Values in the United States: A Multi-Site Hedonic Analysis  

E-Print Network (OSTI)

Opinion about Large Offshore Wind Power: Underlying Factors.Delaware Opinion on Offshore Wind Power - Interim Report.

Hoen, Ben

2010-01-01T23:59:59.000Z

203

Definition: Wind power | Open Energy Information  

Open Energy Info (EERE)

Wind power Wind power Jump to: navigation, search Dictionary.png Wind power The amount of power available to a wind turbine depends on: air density, wind speed and the swept area of the rotor. While the power is proportional to air density and swept area, it varies with the cube of wind speed, so small changes in wind speed can have a relatively large impact on wind power.[1] View on Wikipedia Wikipedia Definition Wind power is the conversion of wind energy into a useful form of energy, such as using wind turbines to make electrical power, windmills for mechanical power, windpumps for water pumping or drainage, or sails to propel ships. Large wind farms consist of hundreds of individual wind turbines which are connected to the electric power transmission network. Offshore wind is steadier and stronger than on land, and offshore farms

204

Power Marketing  

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

Certificate Solicitations Benefit Review Energy Services Rates and Repayment WindHydro Integration Feasibility Study Send correspondence to: Power Marketing Manager Western...

205

City of Princeton, Wisconsin (Utility Company) | Open Energy Information  

Open Energy Info (EERE)

Wisconsin Wisconsin Utility Id 15385 Utility Location Yes Ownership M NERC Location RFC NERC RFC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Cp-1 Small Power Service Commercial Cp-1 Small Power Service with Parallel Generation(20kW or less) Commercial Cp-1 TOD Small Power Optional Time-of-Day Service with Parallel Generation(20kW or less) Commercial Cp-1 TOD Small Power Optional Time-of-Day Service Commercial Cp-2 Large Power Service Industrial Cp-2 Large Power Service with Parallel Generation(20kW or less) Industrial Cp-2 TOD Large Power Optional Time-of-Day Service with Parallel

206

Large Component Removal/Disposal  

Science Conference Proceedings (OSTI)

This paper describes the removal and disposal of the large components from Maine Yankee Atomic Power Plant. The large components discussed include the three steam generators, pressurizer, and reactor pressure vessel. Two separate Exemption Requests, which included radiological characterizations, shielding evaluations, structural evaluations and transportation plans, were prepared and issued to the DOT for approval to ship these components; the first was for the three steam generators and one pressurizer, the second was for the reactor pressure vessel. Both Exemption Requests were submitted to the DOT in November 1999. The DOT approved the Exemption Requests in May and July of 2000, respectively. The steam generators and pressurizer have been removed from Maine Yankee and shipped to the processing facility. They were removed from Maine Yankee's Containment Building, loaded onto specially designed skid assemblies, transported onto two separate barges, tied down to the barges, th en shipped 2750 miles to Memphis, Tennessee for processing. The Reactor Pressure Vessel Removal Project is currently under way and scheduled to be completed by Fall of 2002. The planning, preparation and removal of these large components has required extensive efforts in planning and implementation on the part of all parties involved.

Wheeler, D. M.

2002-02-27T23:59:59.000Z

207

Solar Power  

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

Solar Power Solar Power Project Opportunities Abound in the Region The WIPP site is receives abundant solar energy with 6-7 kWh/sq meter power production potential As the accompanying map of New Mexico shows, the WIPP site enjoys abundant year-round sunshine. With an average solar power production potential of 6-7 kWh/sq meter per day, one exciting project being studied for location at WIPP is a 30-50 MW Solar Power Tower: The American Solar Energy Society (ASES) is is a national trade association promoting solar energy as a clean source of electricity, and provides a comprehensive resource for additional information. DOE's Office of Energy Efficiency and Renewable Energy is also a comprehensive resource for more information on renewable energy.

208

Power system  

DOE Patents (OSTI)

A power system includes a prime mover, a transmission, and a fluid coupler having a selectively engageable lockup clutch. The fluid coupler may be drivingly connected between the prime mover and the transmission. Additionally, the power system may include a motor/generator drivingly connected to at least one of the prime mover and the transmission. The power-system may also include power-system controls configured to execute a control method. The control method may include selecting one of a plurality of modes of operation of the power system. Additionally, the control method may include controlling the operating state of the lockup clutch dependent upon the mode of operation selected. The control method may also include controlling the operating state of the motor/generator dependent upon the mode of operation selected.

Hickam, Christopher Dale (Glasford, IL)

2008-03-18T23:59:59.000Z

209

The Impact of Wind Power Projects on Residential Property Values in the United States: A Multi-Site Hedonic Analysis  

E-Print Network (OSTI)

2002) Economic Impacts of Wind Power in Kittitas County, WA.about Large Offshore Wind Power: Underlying Factors. EnergyOpinion on Offshore Wind Power - Interim Report. University

Hoen, Ben

2010-01-01T23:59:59.000Z

210

2013 completions of large solar thermal power plants mark ...  

U.S. Energy Information Administration (EIA)

Short-Term Energy Outlook ... Search EIA.gov. A-Z Index; ... BrightSource's Ivanpah, expected to enter service by the end of 2013, ...

211

Oxide based thermoelectric materials for large scale power generation  

E-Print Network (OSTI)

The thermoelectric (TE) devices are based on the Seebeck and Peltier effects, which describe the conversion between temperature gradient and electricity. The effectiveness of the material performance can be described by ...

Song, Yang, M. Eng. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

212

Photovoltaic Power Generation  

E-Print Network (OSTI)

This report is an overview of photovoltaic power generation. The purpose of the report is to provide the reader with a general understanding of photovoltaic power generation and how PV technology can be practically applied. There is a brief discussion of early research and a description of how photovoltaic cells convert sunlight to electricity. The report covers concentrating collectors, flat-plate collectors, thin-film technology, and building-integrated systems. The discussion of photovoltaic cell types includes single-crystal, poly-crystalline, and thin-film materials. The report covers progress in improving cell efficiencies, reducing manufacturing cost, and finding economic applications of photovoltaic technology. Lists of major manufacturers and organizations are included, along with a discussion of market trends and projections. The conclusion is that photovoltaic power generation is still more costly than conventional systems in general. However, large variations in cost of conventional electrical power, and other factors, such as cost of distribution, create situations in which the use of PV power is economically sound. PV power is used in remote applications such as communications, homes and villages in developing countries, water pumping, camping, and boating. Gridconnected applications such as electric utility generating facilities and residential rooftop installations make up a smaller but more rapidly expanding segment of PV use. Furthermore, as technological advances narrow the cost gap, more applications are becoming economically feasible at an accelerating rate. iii TABLE OF CONTENTS LIST OF TABLES AND FIGURES ...................................................................................v

Tom Penick; Gale Greenleaf Instructor; Thomas Penick; Bill Louk; Bill Louk

1998-01-01T23:59:59.000Z

213

Peak Power Reduction Strategies for the Lighting Systems in Government Buildings  

E-Print Network (OSTI)

Lighting systems are the second major contributor to the peak power demand and energy consumption in buildings after A/C systems. They account for nearly 20% of the peak power demand and 15% of the annual energy consumption. Thus energy efficient lighting systems and their smart operation can be very effective in reducing the national peak power and energy consumption, particularly for a country like Kuwait where power demand grew from 6750 MW in 2001 to 9075 MW in 2007 (MEW, 2002- 2008). This paper presents an approach developed to reduce the peak power demand in the lighting. The approach included optimum use of daylight, time of day control and delamping. The implementation of this approach for eight government buildings with occupancy of between 7:30 and 2:30 and peak power demand of 29.3 MW achieved a reduction of 2 MW in the peak power demand (around 7%). More importantly this 7% in peak load reduction and 10,628 MWh reduction in the annual energy consumption was achieved without any added cost. Also, the paper includes recommendations for retrofitting cost effective energy efficient lighting systems and implementation of more effective control.

Al-Nakib, D.; Al-Mulla, A. A.; Maheshwari, G. P.

2010-01-01T23:59:59.000Z

214

Brookhaven and the Large Hadron Collider  

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

Brookhaven & the Large Hadron Collider Brookhaven & the Large Hadron Collider Home News Brookhaven & ATLAS ATLAS ATLAS Calorimeter ATLAS Muon Spectrometer Construction Computing Upgrades RHIC & LHC Education LHC tunnel ATLAS detector ATLAS detector RACF BNL built superconducting magnets Brookhaven & the LHC The world's most powerful particle accelerator, the Large Hadron Collider (LHC) in Switzerland, powers unprecedented explorations of the deepest mysteries of the universe. In addition to serving as the U.S. host laboratory for the ATLAS experiment at the LHC, Brookhaven National Lab plays multiple roles in this international collaboration, from construction and project management to data storage and distribution. ATLAS rendering Brookhaven and ATLAS Brookhaven physicists and engineers are participating in one of the most

215

Category:LargeHotel | Open Energy Information  

Open Energy Info (EERE)

LargeHotel LargeHotel Jump to: navigation, search Go Back to PV Economics By Building Type Media in category "LargeHotel" The following 77 files are in this category, out of 77 total. SVLargeHotel Bismarck ND Montana-Dakota Utilities Co (North Dakota).png SVLargeHotel Bismarck ... 70 KB SVLargeHotel International Falls MN Northern States Power Co (Minnesota) Excel Energy.png SVLargeHotel Internati... 85 KB SVLargeHotel LA CA City of Los Angeles California (Utility Company).png SVLargeHotel LA CA Cit... 88 KB SVLargeHotel Memphis TN City of Memphis Tennessee (Utility Company).png SVLargeHotel Memphis T... 67 KB SVLargeHotel Minneapolis MN Northern States Power Co (Minnesota) Excel Energy.png SVLargeHotel Minneapol... 85 KB SVLargeHotel Minot ND Montana-Dakota Utilities Co (North Dakota).png

216

Category:LargeOffice | Open Energy Information  

Open Energy Info (EERE)

LargeOffice LargeOffice Jump to: navigation, search Go Back to PV Economics By Building Type Media in category "LargeOffice" The following 77 files are in this category, out of 77 total. SVLargeOffice Bismarck ND Montana-Dakota Utilities Co (North Dakota).png SVLargeOffice Bismarck... 69 KB SVLargeOffice Cedar City UT Moon Lake Electric Assn Inc (Utah).png SVLargeOffice Cedar Ci... 57 KB SVLargeOffice International Falls MN Northern States Power Co (Minnesota) Excel Energy.png SVLargeOffice Internat... 83 KB SVLargeOffice LA CA City of Los Angeles California (Utility Company).png SVLargeOffice LA CA Ci... 92 KB SVLargeOffice Memphis TN City of Memphis Tennessee (Utility Company).png SVLargeOffice Memphis ... 70 KB SVLargeOffice Minneapolis MN Northern States Power Co (Minnesota) Excel Energy.png

217

FUSION POWER PLANTS GOALS AND TECHNOLOGICAL CHALLENGES  

E-Print Network (OSTI)

and coolant. Lithium eutectic compounds such as lithium-lead (Li17Pb83), aqueous solutions of lithium salts groups have an aver- sion to large power plants in their back yards. As a whole, improved power plants for a burning fusion plasma (Meade, 1996). The next large ex- perimental device is ITER (Baker, 1996) which

Najmabadi, Farrokh

218

Power Reactor Decommissioning Experience  

Science Conference Proceedings (OSTI)

During the past two decades the NRC regulated nuclear industry has encountered and dealt with a diverse range of political, financial and technological challenges while decommissioning its nuclear facilities. During that time, the decommissioning of nuclear facilities has evolved into a mature industry in the United States with a number of large power reactors successfully decommissioned and their NRC licenses terminated. One of the challenges discussed in this report is site release standards, required ...

2011-07-08T23:59:59.000Z

219

PowerPoint Presentation  

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

Bipolar Nickel Metal Hydride Battery Bipolar Nickel Metal Hydride Battery Development and Testing DOE ENERGY STORAGE SYSTEMS RESEARCH PROGRAM ANNUAL PEER REVIEW November 2 - 3, 2006, Washington, D.C. James Landi jlandi@electroenergyinc.com 203-797-2699 Program Objectives and Benefits  The objective of this program is to further develop the bipolar NiMH battery design to be used in high-energy and high-power energy storage applications. - Build and demonstrate large-format batteries - Demonstrate these batteries in present and future applications  The bipolar NiMH battery could provide the following benefits: - Improve efficiencies by reducing transmission peaking losses and shifting peak demands. - Reduce power and voltage sag to users. - Provide an efficient method to distribute backup energy/power

220

Large-Scale Hydropower  

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

Large-scale hydropower plants are generally developed to produce electricity for government or electric utility projects. These plants are more than 30 MW in size, and there is more than 80,000 MW...

Note: This page contains sample records for the topic "large power time-of-day" 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

Power Projects  

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

Power Projects Power Projects Contact SN Customers Environmental Review-NEPA Operations & Maintenance Planning & Projects Power Marketing Rates You are here: SN Home page > About SNR Power Projects Central Valley: In California's Central Valley, 18 dams create reservoirs that can store 13 million acre-feet of water. The project's 615 miles of canals irrigate an area 400 miles long and 45 miles wide--almost one third of California. Powerplants at the dams have an installed capacity of 2,099 megawatts and provide enough energy for 650,000 people. Transmission lines total about 865 circuit-miles. Washoe: This project in west-central Nevada and east-central California was designed to improve the regulation of runoff from the Truckee and Carson river systems and to provide supplemental irrigation water and drainage, as well as water for municipal, industrial and fishery use. The project's Stampede Powerplant has a maximum capacity of 4 MW.

222

Policy Issues for Retail Beamed Power Transmission  

E-Print Network (OSTI)

it possible to deliver electric power to off-grid locations using millimeter-wave beams and compact, efficient of very large utility-scale power plants, serving given areas in a hub-and-spoke arrangement. GridPolicy Issues for Retail Beamed Power Transmission Girish Chowdhary, Rajeev Gadre, Narayanan

223

Solar thermal power systems. Program summary  

DOE Green Energy (OSTI)

Each of DOE's solar Thermal Power Systems projects funded and/or in existence during FY 1978 is described and the status as of September 30, 1978 is reflected. These projects are divided as follows: small thermal power applications, large thermal power applications, and advanced thermal technology. Also included are: 1978 project summary tables, bibliography, and an alphabetical index of contractors. (MHR)

Not Available

1978-12-01T23:59:59.000Z

224

Statistical GPU power analysis using tree-based methods  

Science Conference Proceedings (OSTI)

Graphics Processing Units (GPUs) have emerged as a promising platform for parallel computation. With a large number of scalar processors and abundant memory bandwidth, GPUs provide substantial computation power. While delivering high computation performance, ... Keywords: GTX 280 GPU, statistical GPU power analysis, parallel computation, scalar processors, memory bandwidth, computation power, power supplies, cooling systems, power consumption requirement, high-level GPU power consumption model, tree-based random Statistical forest methods, GPU runtime power consumption, performance metrics, GPU simulator, CUDA kernels

Jianmin Chen; Bin Li; Ying Zhang; Lu Peng; Jih-kwon Peir

2011-07-01T23:59:59.000Z

225

Reliability Estimates for Power Supplies  

Science Conference Proceedings (OSTI)

Failure rates for large power supplies at a fusion facility are critical knowledge needed to estimate availability of the facility or to set priorties for repairs and spare components. A study of the "failure to operate on demand" and "failure to continue to operate" failure rates has been performed for the large power supplies at DIII-D, which provide power to the magnet coils, the neutral beam injectors, the electron cyclotron heating systems, and the fast wave systems. When one of the power supplies fails to operate, the research program has to be either temporarily changed or halted. If one of the power supplies for the toroidal or ohmic heating coils fails, the operations have to be suspended or the research is continued at de-rated parameters until a repair is completed. If one of the power supplies used in the auxiliary plasma heating systems fails the research is often temporarily changed until a repair is completed. The power supplies are operated remotely and repairs are only performed when the power supplies are off line, so that failure of a power supply does not cause any risk to personnel. The DIII-D Trouble Report database was used to determine the number of power supply faults (over 1,700 reports), and tokamak annual operations data supplied the number of shots, operating times, and power supply usage for the DIII-D operating campaigns between mid-1987 and 2004. Where possible, these power supply failure rates from DIII-D will be compared to similar work that has been performed for the Joint European Torus equipment. These independent data sets support validation of the fusion-specific failure rate values.

Lee C. Cadwallader; Peter I. Petersen

2005-09-01T23:59:59.000Z

226

SOLAR POWER  

DOE Green Energy (OSTI)

Thermal energy storage (TES) is an integral part of a concentrated solar power (CSP) system. It enables plant operators to generate electricity beyond on sun hours and supply power to the grid to meet peak demand. Current CSP sensible heat storage systems employ molten salts as both the heat transfer fluid and the heat storage media. These systems have an upper operating temperature limit of around 400 C. Future TES systems are expected to operate at temperatures between 600 C to 1000 C for higher thermal efficiencies which should result in lower electricity cost. To meet future operating temperature and electricity cost requirements, a TES concept utilizing thermochemical cycles (TCs) based on multivalent solid oxides was proposed. The system employs a pair of reduction and oxidation (REDOX) reactions to store and release heat. In the storage step, hot air from the solar receiver is used to reduce the oxidation state of an oxide cation, e.g. Fe3+ to Fe2+. Heat energy is thus stored as chemical bonds and the oxide is charged. To discharge the stored energy, the reduced oxide is re-oxidized in air and heat is released. Air is used as both the heat transfer fluid and reactant and no storage of fluid is needed. This project investigated the engineering and economic feasibility of this proposed TES concept. The DOE storage cost and LCOE targets are $15/kWh and $0.09/kWh respectively. Sixteen pure oxide cycles were identified through thermodynamic calculations and literature information. Data showed the kinetics of re-oxidation of the various oxides to be a key barrier to implementing the proposed concept. A down selection was carried out based on operating temperature, materials costs and preliminary laboratory measurements. Cobalt oxide, manganese oxide and barium oxide were selected for developmental studies to improve their REDOX reaction kinetics. A novel approach utilizing mixed oxides to improve the REDOX kinetics of the selected oxides was proposed. It partially replaces some of the primary oxide cations with selected secondary cations. This causes a lattice charge imbalance and increases the anion vacancy density. Such vacancies enhance the ionic mass transport and lead to faster re-oxidation. Reoxidation fractions of Mn3O4 to Mn2O3 and CoO to Co3O4 were improved by up to 16 fold through the addition of a secondary oxide. However, no improvement was obtained in barium based mixed oxides. In addition to enhancing the short term re-oxidation kinetics, it was found that the use of mixed oxides also help to stabilize or even improve the TES properties after long term thermal cycling. Part of this improvement could be attributed to a reduced grain size in the mixed oxides. Based on the measurement results, manganese-iron, cobalt-aluminum and cobalt iron mixed oxides have been proposed for future engineering scale demonstration. Using the cobalt and manganese mixed oxides, we were able to demonstrate charge and discharge of the TES media in both a bench top fixed bed and a rotary kiln-moving bed reactor. Operations of the fixed bed configuration are straight forward but require a large mass flow rate and higher fluid temperature for charging. The rotary kiln makes direct solar irradiation possible and provides significantly better heat transfer, but designs to transport the TES oxide in and out of the reactor will need to be defined. The final reactor and system design will have to be based on the economics of the CSP plant. A materials compatibility study was also conducted and it identified Inconel 625 as a suitable high temperature engineering material to construct a reactor holding either cobalt or manganese mixed oxides. To assess the economics of such a CSP plant, a packed bed reactor model was established as a baseline. Measured cobalt-aluminum oxide reaction kinetics were applied to the model and the influences of bed properties and process parameters on the overall system design were investigated. The optimal TES system design was found to be a network of eight fixed bed reactors at 18.75 MWth each with charge and

PROJECT STAFF

2011-10-31T23:59:59.000Z

227

PowerPoint Presentation  

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

Application of Large Application of Large Application of Large - - Scale Scale Energy Storage Systems Energy Storage Systems in AEP in AEP Ali Nourai Distributed Energy Resources American Electric Power EESAT Conference September 2007 Funded in part by the Energy Storage Systems Program of the U.S. Department Of Energy (DOE/ESS) through Sandia National Laboratories (SNL). 2 A Possible Future of Distribution A Possible Future of Distribution Energy Storage is a Key to our Future Grid Energy Storage is key to a controlled energy flow on the grid Transmission & Distribution Distribution Substation Commercial Industrial Gensets , FC, LM Gensets , Solar, Fuel Cells (FC), Load Management (LM) Residential Transmission Substation IGCC - FC Hybrid, Biomass, Solar, Nuclear, Direct Carbon FC Bulk Generation

228

Green Power Network: Green Power Marketing  

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

to main content U.S. Department of Energy Energy Efficiency and Renewable Energy Green Power Network About the GPN Green Power Markets Buying Green Power Onsite Renewable...

229

Shenyang Power Group | Open Energy Information  

Open Energy Info (EERE)

Shenyang Power Group Shenyang Power Group Jump to: navigation, search This article is a stub. You can help OpenEI by expanding it. A Shenyang-based (China) alliance of power companies created to compete on large projects. Controlled by A-Power Energy "SPG is a local power industry alliance based in Shenyang, China, and it was formed early this year under the leadership of A-Power, China`s leading provider of distributed power generation (DG) systems and a fast-growing manufacturer of wind turbines. SPG`s member companies range from power equipment makers to engineering service providers. The alliance was created to integrate local resources and leverage the manufacturing, engineering and government initiatives in the Shenyang area so that SPG can pursue large-scale, international projects in the alternative energy sector. "

230

Power inverters  

DOE Patents (OSTI)

Power inverters include a frame and a power module. The frame has a sidewall including an opening and defining a fluid passageway. The power module is coupled to the frame over the opening and includes a substrate, die, and an encasement. The substrate includes a first side, a second side, a center, an outer periphery, and an outer edge, and the first side of the substrate comprises a first outer layer including a metal material. The die are positioned in the substrate center and are coupled to the substrate first side. The encasement is molded over the outer periphery on the substrate first side, the substrate second side, and the substrate outer edge and around the die. The encasement, coupled to the substrate, forms a seal with the metal material. The second side of the substrate is positioned to directly contact a fluid flowing through the fluid passageway.

Miller, David H. (Redondo Beach, CA); Korich, Mark D. (Chino Hills, CA); Smith, Gregory S. (Woodland Hills, CA)

2011-11-15T23:59:59.000Z

231

Technoeconomic Evaluation of Large-Scale Electrolytic Hydrogen Production Technologies  

Science Conference Proceedings (OSTI)

Large-scale production of electrolytic hydrogen and oxygen could increase use of baseload and off-peak surplus power. To be competitive, however, water electrolysis will require low-cost electricity.

1985-09-20T23:59:59.000Z

232

Evaluating Large-Eddy Simulations Using Volume Imaging Lidar Data  

Science Conference Proceedings (OSTI)

The authors apply data analysis techniques that demonstrate the power of using volume imaging lidar observations to evaluate several aspects of large-eddy simulations (LESs). They present observations and simulations of an intense and spatially ...

Shane D. Mayor; Gregory J. Tripoli; Edwin W. Eloranta

2003-07-01T23:59:59.000Z

233

Large Wind Technology | Department of Energy  

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

Large Wind Technology Large Wind Technology Large Wind Technology The Wind Program works with industry partners to increase the performance and reliability of large wind technologies while lowering the cost of wind energy. The program's research efforts have helped to increase the average capacity factor (a measure of power plant productivity) from 22% for wind turbines installed before 1998 to 35% for turbines installed between 2004 and 2007. Wind energy costs have been reduced from over 55 cents (current dollars) per kilowatt-hour (kWh) in 1980 to under six cents/kWh today. To ensure future industry growth, the technology must continue to evolve, building on earlier successes to further improve reliability, increase capacity factors, and reduce costs. This page describes the goal of the

234

Decontamination of large components-test case  

SciTech Connect

The rising per-cubic-foot burial costs, together with the trend toward standardized above-ground burial sites, provides the basis for seeking an alternative to direct burial of large components. Large contaminated components such as steam generators can be safely dismantled and decontaminated for free release, metals recycle, and volume reduction. This grand-scale disposal technology will prove to be an economical and ecological alternative to direct burial or interim storage. Yankee Atomic Electric Company (YAEC) in Bolton, operators and decommissioners of the Yankee Nuclear Power Station in Rowe, Massachusetts, has teamed with Frank W Hake Associates in Memphis, TN, to decontaminate a large component as a test case. The large component is YAEC`s reactor pressure vessel head (RPVH). The 79 100 lb RPVH is surface contaminated with 0.7 Ci (1500 mR/h contact) resulting from 32 yr of operating in a 2000 psi, 530{degrees}F pressurized water reactor environment.

Mancini, A. [Yankee Atomic Electric Co., Bolton, MA (United States); Bosco, B. [Frank W. Hake Associates, Memphis, TN (United States)

1996-12-31T23:59:59.000Z

235

Management of Power Demand through Operations of Building Systems  

E-Print Network (OSTI)

In hot summers, the demand for electrical power is dominated by the requirements of the air-conditioning and lighting systems. Such systems account for more than 80% of the peak electrical demand in Kuwait. A study was conducted to explore the potential for managing the peak electrical demand through improved operation strategies for building systems. Two buildings with partial occupancy patterns and typical peak loads of 1 and 2.2 MW were investigated. Changes to the operation of building systems included utilizing the thermal mass to reduce cooling production and distribution during the last hour of occupancy, time-of-day control of chillers and auxiliaries, and de-lamping. The implemented operational changes led to significant reductions in building loads during the hours of national peak demand. The achieved savings reached 31% during the critical hour, and up to 47% afterwards. Daily energy savings of 13% represented an added benefit. Additional operational changes could lead to further savings in peak power when implemented.

ElSherbini, A. I.; Maheshwari, G.; Al-Naqib, D.; Al-Mulla, A.

2009-11-01T23:59:59.000Z

236

Large Occlusion Stereo  

Science Conference Proceedings (OSTI)

A method for solving the stereo matching problem in the presence of large occlusion is presented. A data structurethe disparity space imageis defined to facilitate the description of the effects of occlusion on the stereo matching process ... Keywords: disparity-space, dynamic-programming stereo, occlusion, stereo

Aaron F. Bobick; Stephen S. Intille

1999-09-01T23:59:59.000Z

237

Composting Large Animal Carcasses  

E-Print Network (OSTI)

Disposing of large animal carcasses can be a problem for agricultural producers. Composting is a simple, low-cost method that yields a useful product that can be used as fertilizer. In this publication you'll learn the basics of composting, how to build and maintain a compost pile, tools you will need, and how to use the finished compost.

Auvermann, Brent W.; Mukhtar, Saqib; Heflin, Kevin

2006-10-31T23:59:59.000Z

238

Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. |  

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

Power Right. Power Smart. Efficient Computer Power Supplies and Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. March 10, 2009 - 6:00am Addthis John Lippert Power supplies convert the AC power that you get from your electric company into the DC power consumed by most electronics, including your computer. We expect our power supplies to be safe, reliable, and durable. If they meet those criteria, then they're all alike, except for cost, right? Well, not exactly. You see, there's one other important feature that sets them apart: efficiency. And I don't know about you, but I believe waste is bad. For me, high efficiency is one important feature that's needed for something to be high quality. So isn't it ridiculous that most power

239

Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. |  

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

Power Right. Power Smart. Efficient Computer Power Supplies and Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. March 10, 2009 - 6:00am Addthis John Lippert Power supplies convert the AC power that you get from your electric company into the DC power consumed by most electronics, including your computer. We expect our power supplies to be safe, reliable, and durable. If they meet those criteria, then they're all alike, except for cost, right? Well, not exactly. You see, there's one other important feature that sets them apart: efficiency. And I don't know about you, but I believe waste is bad. For me, high efficiency is one important feature that's needed for something to be high quality. So isn't it ridiculous that most power

240

Long-Term Wind Power Variability  

DOE Green Energy (OSTI)

The National Renewable Energy Laboratory started collecting wind power data from large commercial wind power plants (WPPs) in southwest Minnesota with dedicated dataloggers and communication links in the spring of 2000. Over the years, additional WPPs in other areas were added to and removed from the data collection effort. The longest data stream of actual wind plant output is more than 10 years. The resulting data have been used to analyze wind power fluctuations, frequency distribution of changes, the effects of spatial diversity, and wind power ancillary services. This report uses the multi-year wind power data to examine long-term wind power variability.

Wan, Y. H.

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "large power time-of-day" 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

Primer on Wind Power for Utility Applications  

SciTech Connect

The wind industry still faces many market barriers, some of which stem from utilities' lack of experience with the technology. Utility system operators and planners need to understand the effects of fluctuating wind power on system regulation and stability. Without high-frequency wind power data and realistic wind power plant models to analyze the problem, utilities often rely on conservative assumptions and worst-case scenarios to make engineering decisions. To remedy the situation, the National Renewable Energy Laboratory (NREL) has undertaken a project to record long-term, high-resolution (1-hertz [Hz]) wind power output data from large wind power plants in various regions. The objective is to systematically collect actual wind power data from large commercial wind power plants so that wind power fluctuations, their frequency distribution, the effects of spatial diversity, and the ancillary services of large commercial wind power plants can be analyzed. It also aims to provide the industry with nonproprietary wind power data in different wind regimes for system planning and operating impact studies. This report will summarize the results of data analysis performed at NREL and discuss the wind power characteristics related to power system operation and planning.

Wan, Y.

2005-12-01T23:59:59.000Z

242

Primer on Wind Power for Utility Applications  

DOE Green Energy (OSTI)

The wind industry still faces many market barriers, some of which stem from utilities' lack of experience with the technology. Utility system operators and planners need to understand the effects of fluctuating wind power on system regulation and stability. Without high-frequency wind power data and realistic wind power plant models to analyze the problem, utilities often rely on conservative assumptions and worst-case scenarios to make engineering decisions. To remedy the situation, the National Renewable Energy Laboratory (NREL) has undertaken a project to record long-term, high-resolution (1-hertz [Hz]) wind power output data from large wind power plants in various regions. The objective is to systematically collect actual wind power data from large commercial wind power plants so that wind power fluctuations, their frequency distribution, the effects of spatial diversity, and the ancillary services of large commercial wind power plants can be analyzed. It also aims to provide the industry with nonproprietary wind power data in different wind regimes for system planning and operating impact studies. This report will summarize the results of data analysis performed at NREL and discuss the wind power characteristics related to power system operation and planning.

Wan, Y.

2005-12-01T23:59:59.000Z

243

Power Supplies  

Science Conference Proceedings (OSTI)

Table 2   Characteristics of the four major power sources for induction heating...state 180 Hz to 50 kHz 1 kW to 2 MW 75??95 No standby current; high efficiency; no moving parts;

244

Implicit Large Eddy Simulation  

National Nuclear Security Administration (NNSA)

Implicit Implicit Large Eddy Simulation (ILES) for High Reynolds Number Flows Len Margolin Applied Physics Division Los Alamos National Laboratory Collaborators: 1. Bill Rider (LANL) 2. Piotr Smolarkiewicz (NCAR) 3. Andrzej Wysogrodski (NCAR) 4. Fernando Grinstein (NRL) len@lanl.gov 1 Implicit Large Eddy Simulation Outline: * What is ILES? * What are its advantages? * Historical perspective * Why does it work? * Some examples len@lanl.gov 2 What is ILES ILES is the direct application of a fluid solver to a high Reynolds number fluid flow with no explicit turbulence model. · The truncation terms of the algorithm serve as an effective model of the effects of the unresolved scales. · Fluid solvers based on Nonoscillatory Finite Volume (NFV) approximations work effectively for ILES. · Fluid solvers based on pseudospectral methods, leapfrog methods, advective form methods, etc. do not work

245

The promise of the large collider  

E-Print Network (OSTI)

"In 2007, the most powerful particle accelerator ever built, CERN's new Large hadron Collider, will probe the secrets of matter in the energy states prevailing in the moments after the Big Bang. By colliding particles together when they are moving at close to the speed of ight, physicists hope to find out about matter in its earliest forms, using the energy produced by the collisions." (2 pages)

2007-01-01T23:59:59.000Z

246

Multiple resonant railgun power supply  

DOE Patents (OSTI)

A multiple repetitive resonant railgun power supply provides energy for repetitively propelling projectiles from a pair of parallel rails. A plurality of serially connected paired parallel rails are powered by similar power supplies. Each supply comprises an energy storage capacitor, a storage inductor to form a resonant circuit with the energy storage capacitor and a magnetic switch to transfer energy between the resonant circuit and the pair of parallel rails for the propelling of projectiles. The multiple serial operation permits relatively small energy components to deliver overall relatively large amounts of energy to the projectiles being propelled.

Honig, Emanuel M. (Los Alamos, NM); Nunnally, William C. (Los Alamos, NM)

1988-01-01T23:59:59.000Z

247

Multiple resonant railgun power supply  

DOE Patents (OSTI)

A multiple repetitive resonant railgun power supply provides energy for repetitively propelling projectiles from a pair of parallel rails. A plurality of serially connected paired parallel rails are powered by similar power supplies. Each supply comprises an energy storage capacitor, a storage inductor to form a resonant circuit with the energy storage capacitor and a magnetic switch to transfer energy between the resonant circuit and the pair of parallel rails for the propelling of projectiles. The multiple serial operation permits relatively small energy components to deliver overall relatively large amounts of energy to the projectiles being propelled.

Honig, E.M.; Nunnally, W.C.

1985-06-19T23:59:59.000Z

248

Smart Power Laboratory (Fact Sheet)  

Science Conference Proceedings (OSTI)

This fact sheet describes the purpose, lab specifications, applications scenarios, and information on how to partner with NREL's Smart Power Laboratory at the Energy Systems Integration Facility. Research at NREL's Smart Power Laboratory in the Energy Systems Integration Facility (ESIF) focuses on the development and integration of smart technologies including the integration of distributed and renewable energy resources through power electronics and smart energy management for building applications. The 5,300 sq. ft. laboratory is designed to be highly flexible and configurable, essential for a large variety of smart power applications that range from developing advanced inverters and power converters to testing residential and commercial scale meters and control technologies. Some application scenarios are: (1) Development of power converters for integration of distributed and renewable energy resources; (2) Development of advanced controls for smart power electronics; (3) Testing prototype and commercially available power converters for electrical interconnection and performance, advanced functionality, long duration reliability and safety; and (4) Hardware-in-loop development and testing of power electronics systems in smart distribution grid models.

Not Available

2011-10-01T23:59:59.000Z

249

Design and implementation of a dc/dc resonant converter for power system applications.  

E-Print Network (OSTI)

??In modern power system, the energy conversion includes a large number of the energy processors, and demands high quality, small, lightweight, reliable and efficient power (more)

Fazel Darbandi, Arash

2013-01-01T23:59:59.000Z

250

Efficient hybrid shunt active power filter for improvement of power factor and harmonic suppression using MATLAB  

Science Conference Proceedings (OSTI)

Power quality management is the main problem that the industry is facing today. This is mainly affected by the generation of harmonics. The growing use of electronic equipment produces a large amount of harmonics in distribution systems because of non-sinusoidal ... Keywords: MATLAB 7.6, harmonic suppression, hybrid filter, power quality, shunt active power filter, total harmonic distortion

Jarupula Somlal

2011-03-01T23:59:59.000Z

251

Power superconducting power transmission cable  

DOE Patents (OSTI)

The present invention is for a compact superconducting power transmission cable operating at distribution level voltages. The superconducting cable is a conductor with a number of tapes assembled into a subconductor. These conductors are then mounted co-planarly in an elongated dielectric to produce a 3-phase cable. The arrangement increases the magnetic field parallel to the tapes thereby reducing ac losses.

Ashworth, Stephen P. (Cambridge, GB)

2003-01-01T23:59:59.000Z

252

Synergetic Power Systems | Open Energy Information  

Open Energy Info (EERE)

Synergetic Power Systems Synergetic Power Systems Jump to: navigation, search Name Synergetic Power Systems Place Cambridge, Massachusetts Sector Buildings, Solar Product Start-up planning to install parabolic concentrated solar collector systems on large flat-roofed buildings to power their HVAC systems, and provide back-up and peak demand power. References Synergetic Power Systems[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Synergetic Power Systems is a company located in Cambridge, Massachusetts . References ↑ "Synergetic Power Systems" Retrieved from "http://en.openei.org/w/index.php?title=Synergetic_Power_Systems&oldid=351978" Categories: Clean Energy Organizations

253

Power Systems Integration Laboratory (Fact Sheet)  

Science Conference Proceedings (OSTI)

This fact sheet describes the purpose, lab specifications, applications scenarios, and information on how to partner with NREL's Power Systems Integration Laboratory at the Energy Systems Integration Facility. At NREL's Power Systems Integration Laboratory in the Energy Systems Integration Facility (ESIF), research focuses on developing and testing large-scale distributed energy systems for grid-connected, stand-alone, and microgrid applications. The laboratory can accommodate large power system components such as inverters for photovoltaic (PV) and wind systems, diesel and natural gas generators, battery packs, microgrid interconnection switchgear, and vehicles. Closely coupled with the research electrical distribution bus at the ESIF, the Power Systems Integration Laboratory will offer power testing capability of megawatt-scale DC and AC power systems, as well as advanced hardware-in-the-loop and model-in-the-loop simulation capabilities. Thermal heating and cooling loops and fuel also allow testing of combined heating/cooling and power systems (CHP).

Not Available

2011-10-01T23:59:59.000Z

254

Nuclear Power  

E-Print Network (OSTI)

The world of the twenty first century is an energy consuming society. Due to increasing population and living standards, each year the world requires more energy and new efficient systems for delivering it. Furthermore, the new systems must be inherently safe and environmentally benign. These realities of today's world are among the reasons that lead to serious interest in deploying nuclear power as a sustainable energy source. Today's nuclear reactors are safe and highly efficient energy systems that offer electricity and a multitude of co-generation energy products ranging from potable water to heat for industrial applications. The goal of the book is to show the current state-of-the-art in the covered technical areas as well as to demonstrate how general engineering principles and methods can be applied to nuclear power systems.

Tsvetkov, Pavel

2010-08-01T23:59:59.000Z

255

PowerPoint Presentation  

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

Commercialization of the SuperOPF Commercialization of the SuperOPF Framework: Phase III (Theme: Co- optimization Stochastic SuperOPF- renewables) Performers: PSERC: Hsiao-Dong Chiang - LEAD Cornell University: Ray Zimmerman Bigwood Systems, Inc.: Patrick Causgrove, Bin Wang Phase I: 1.(support industrial model) A commercial-grade core SuperOPF software supporting various industrial-grade power system models such as (i) CIM-compliance; and (ii) PSS/E data format 2. A multi-stage OPF solver with adaptive homotopy-based Interior Point Method for large- scale power systems (PJM: 14,000-bus data) Bigwood Systems Inc., 2013 3 Results: Efficiency and Robustness (Analytical Jacobian matrices) Loading Conditions One-Staged Interior Point Method Multi-Staged Scheme 1 Succeeded Succeeded

256

Power Search  

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

You are here: Find a Car Home > Power Search You are here: Find a Car Home > Power Search Power Search Expand any feature by selecting its title bar. Choose as many or as few features as you like. Model Year From: 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 To: 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 MSRP Under $15,000 $15,000-$20,000 $20,000-$25,000 $25,000-$30,000 $30,000-$35,000 $35,000-$40,000 $40,000-$45,000 $45,000-$50,000 $50,000-$55,000 $55,000-$60,000 $60,000-$65,000 $65,000-$70,000 $70,000-$75,000 $75,000-$80,000 $80,000-$85,000 Over $85,000 - OR - Minimum: Select... $5,000 $6,000 $7,000 $8,000 $9,000 $10,000 $11,000

257

STATISTICAL ANALYSIS AND STRUCTURE OPTIMIZATION OF LARGE PHOTOVOLTAIC MODULE  

E-Print Network (OSTI)

on the output power of large Photovoltaic (PV) module by modeling each PV cell as a current source whose short. Photovoltaic (PV) is a simple and elegant method of harnessing the sun's energy. PV devices (solar cellsSTATISTICAL ANALYSIS AND STRUCTURE OPTIMIZATION OF LARGE PHOTOVOLTAIC MODULE RATHEESH R

Qiu, Qinru

258

Slinger Utilities | Open Energy Information  

Open Energy Info (EERE)

Slinger Utilities Slinger Utilities Jump to: navigation, search Name Slinger Utilities Place Wisconsin Utility Id 17324 Utility Location Yes Ownership M NERC Location MRO NERC MRO Yes ISO MISO Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png General Service- Single-Phase Commercial General Service- Single-Phase- Time-of-Day Commercial General Service- Three-Phase Commercial General Service- Three-Phase- Time-of-Day Commercial Industrial Power- Time-of-Day Industrial Large Power- Time-of-Day Commercial Ornamental Street Lighting- 150W HPS Lighting Overhead Street Lighting- 150W HPS Lighting

259

A Tariff for Reactive Power  

DOE Green Energy (OSTI)

Two kinds of power are required to operate an electric power system: real power, measured in watts, and reactive power, measured in volt-amperes reactive or VARs. Reactive power supply is one of a class of power system reliability services collectively known as ancillary services, and is essential for the reliable operation of the bulk power system. Reactive power flows when current leads or lags behind voltage. Typically, the current in a distribution system lags behind voltage because of inductive loads such as motors. Reactive power flow wastes energy and capacity and causes voltage droop. To correct lagging power flow, leading reactive power (current leading voltage) is supplied to bring the current into phase with voltage. When the current is in phase with voltage, there is a reduction in system losses, an increase in system capacity, and a rise in voltage. Reactive power can be supplied from either static or dynamic VAR sources. Static sources are typically transmission and distribution equipment, such as capacitors at substations, and their cost has historically been included in the revenue requirement of the transmission operator (TO), and recovered through cost-of-service rates. By contrast, dynamic sources are typically generators capable of producing variable levels of reactive power by automatically controlling the generator to regulate voltage. Transmission system devices such as synchronous condensers can also provide dynamic reactive power. A class of solid state devices (called flexible AC transmission system devices or FACTs) can provide dynamic reactive power. One specific device has the unfortunate name of static VAR compensator (SVC), where 'static' refers to the solid state nature of the device (it does not include rotating equipment) and not to the production of static reactive power. Dynamic sources at the distribution level, while more costly would be very useful in helping to regulate local voltage. Local voltage regulation would reduce system losses, increase circuit capacity, increase reliability, and improve efficiency. Reactive power is theoretically available from any inverter-based equipment such as photovoltaic (PV) systems, fuel cells, microturbines, and adjustable-speed drives. However, the installation is usually only economical if reactive power supply is considered during the design and construction phase. In this report, we find that if the inverters of PV systems or the generators of combined heat and power (CHP) systems were designed with capability to supply dynamic reactive power, they could do this quite economically. In fact, on an annualized basis, these inverters and generators may be able to supply dynamic reactive power for about $5 or $6 per kVAR. The savings from the local supply of dynamic reactive power would be in reduced losses, increased capacity, and decreased transmission congestion. The net savings are estimated to be about $7 per kVAR on an annualized basis for a hypothetical circuit. Thus the distribution company could economically purchase a dynamic reactive power service from customers for perhaps $6/kVAR. This practice would provide for better voltage regulation in the distribution system and would provide an alternate revenue source to help amortize the cost of PV and CHP installations. As distribution and transmission systems are operated under rising levels of stress, the value of local dynamic reactive supply is expected to grow. Also, large power inverters, in the range of 500 kW to 1 MW, are expected to decrease in cost as they become mass produced. This report provides one data point which shows that the local supply of dynamic reactive power is marginally profitable at present for a hypothetical circuit. We expect that the trends of growing power flow on the existing system and mass production of inverters for distributed energy devices will make the dynamic supply of reactive power from customers an integral component of economical and reliable system operation in the future.

Kueck, John D [ORNL; Kirby, Brendan J [ORNL; Li, Fangxing [ORNL; Tufon, Christopher [Pacific Gas and Electric Company; Isemonger, Alan [California Independent System Operator

2008-07-01T23:59:59.000Z

260

Alaska's At-large congressional district: Energy Resources | Open Energy  

Open Energy Info (EERE)

Alaska's At-large congressional district: Energy Resources Alaska's At-large congressional district: Energy Resources Jump to: navigation, search Equivalent URI DBpedia This article is a stub. You can help OpenEI by expanding it. This page represents a congressional district in Alaska. Registered Energy Companies in Alaska's At-large congressional district ABS Alaskan Inc Alaskan Wind Industries Four Dam Pool Power Agency FDPPA Kodiak Electric Association KEA Remote Power Inc. Sustina Energy Systems Wind Energy Alaska Energy Generation Facilities in Alaska's At-large congressional district Chena Hot Springs Geothermal Facility Utility Companies in Alaska's At-large congressional district Alaska Energy Authority Retrieved from "http://en.openei.org/w/index.php?title=Alaska%27s_At-large_congressional_district&oldid=174110"

Note: This page contains sample records for the topic "large power time-of-day" 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

PowerPoint Presentation  

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

U.S. Department of Energy Electricity Advisory Committee October 20, 2011 Bob Lasseter Emeritus Professor University of Wisconsin-Madison DER Technologies Dispatchable Sources * Small internal combustion-engine generator * Small gas turbines generators * Microturbines * Fuel cells Intermittent Sources *Wind turbines *Photovoltaic Storage *Batteries, Ultra-capacitors *Fly-wheels How do we deal with 100,000+ DER units? Cluster Loads & DER (interfaced to the grid using a fast switch) * Microgrids provide the most promising means of integrating large amounts of distributed sources into the power grid * Microgrids open the door to significant system efficiency

262

Wind Power Plant Monitoring Project Annual Report  

DOE Green Energy (OSTI)

The intermittent nature of the wind resource, together with short-term power fluctuations, are the two principal issues facing a utility with wind power plants in its power grid. To mitigate these issues, utilities, wind power plant developers, and operators need to understand the nature of wind power fluctuations and how they affect the electrical power system, as well as to analyze ancillary service requirements with real wind power plant output data. To provide the necessary data, NREL conducted a study to collect at least 2 years of long-term, high-frequency (1-hertz [Hz]) data from several medium- to large-scale wind power plants with different wind resources, terrain features, and turbine types. Researchers then analyzed the data for power fluctuations, frequency distribution of wind power (by deriving a probability distribution function of wind power plant output variations), spatial and temporal diversity of wind power, and wind power capacity credit issues. Results of these analyses can provide data on the potential effects of wind power plants on power system regulation.

Wan, Y.

2001-07-11T23:59:59.000Z

263

Estimating carbon dioxide emission factors for the California electric power sector  

SciTech Connect

The California Climate Action Registry (''Registry'') was initially established in 2000 under Senate Bill 1771, and clarifying legislation (Senate Bill 527) was passed in September 2001. The Ernest Orlando Lawrence Berkeley National Laboratory (Berkeley Lab) has been asked to provide technical assistance to the California Energy Commission (CEC) in establishing methods for calculating average and marginal electricity emissions factors, both historic and current, as well as statewide and for sub-regions. This study is exploratory in nature. It illustrates the use of three possible approaches and is not a rigorous estimation of actual emissions factors. While the Registry will ultimately cover emissions of all greenhouse gases (GHGs), presently it is focusing on carbon dioxide (CO2). Thus, this study only considers CO2, which is by far the largest GHG emitted in the power sector. Associating CO2 emissions with electricity consumption encounters three major complications. First, electricity can be generated from a number of different primary energy sources, many of which are large sources of CO2 emissions (e.g., coal combustion) while others result in virtually no CO{sub 2} emissions (e.g., hydro). Second, the mix of generation resources used to meet loads may vary at different times of day or in different seasons. Third, electrical energy is transported over long distances by complex transmission and distribution systems, so the generation sources related to electricity usage can be difficult to trace and may occur far from the jurisdiction in which that energy is consumed. In other words, the emissions resulting from electricity consumption vary considerably depending on when and where it is used since this affects the generation sources providing the power. There is no practical way to identify where or how all the electricity used by a certain customer was generated, but by reviewing public sources of data the total emission burden of a customer's electricity supplier can b e found and an average emissions factor (AEF) calculated. These are useful for assigning a net emission burden to a facility. In addition, marginal emissions factors (MEFs) for estimating the effect of changing levels of usage can be calculated. MEFs are needed because emission rates at the margin are likely to diverge from the average. The overall objective of this task is to develop methods for estimating AEFs and MEFs that can provide an estimate of the combined net CO2 emissions from all generating facilities that provide electricity to California electricity customers. The method covers the historic period from 1990 to the present, with 1990 and 1999 used as test years. The factors derived take into account the location and time of consumption, direct contracts for power which may have certain atypical characteristics (e.g., ''green'' electricity from renewable resources), resource mixes of electricity providers, import and export of electricity from utility owned and other sources, and electricity from cogeneration. It is assumed that the factors developed in this way will diverge considerably from simple statewide AEF estimates based on standardized inventory estimates that use conventions inconsistent with the goals of this work. A notable example concerns the treatment of imports, which despite providing a significant share of California's electricity supply picture, are excluded from inventory estimates of emissions, which are based on geographical boundaries of the state.

Marnay, Chris; Fisher, Diane; Murtishaw, Scott; Phadke, Amol; Price, Lynn; Sathaye, Jayant

2002-08-01T23:59:59.000Z

264

Estimating carbon dioxide emission factors for the California electric power sector  

SciTech Connect

The California Climate Action Registry (''Registry'') was initially established in 2000 under Senate Bill 1771, and clarifying legislation (Senate Bill 527) was passed in September 2001. The Ernest Orlando Lawrence Berkeley National Laboratory (Berkeley Lab) has been asked to provide technical assistance to the California Energy Commission (CEC) in establishing methods for calculating average and marginal electricity emissions factors, both historic and current, as well as statewide and for sub-regions. This study is exploratory in nature. It illustrates the use of three possible approaches and is not a rigorous estimation of actual emissions factors. While the Registry will ultimately cover emissions of all greenhouse gases (GHGs), presently it is focusing on carbon dioxide (CO2). Thus, this study only considers CO2, which is by far the largest GHG emitted in the power sector. Associating CO2 emissions with electricity consumption encounters three major complications. First, electricity can be generated from a number of different primary energy sources, many of which are large sources of CO2 emissions (e.g., coal combustion) while others result in virtually no CO{sub 2} emissions (e.g., hydro). Second, the mix of generation resources used to meet loads may vary at different times of day or in different seasons. Third, electrical energy is transported over long distances by complex transmission and distribution systems, so the generation sources related to electricity usage can be difficult to trace and may occur far from the jurisdiction in which that energy is consumed. In other words, the emissions resulting from electricity consumption vary considerably depending on when and where it is used since this affects the generation sources providing the power. There is no practical way to identify where or how all the electricity used by a certain customer was generated, but by reviewing public sources of data the total emission burden of a customer's electricity supplier can b e found and an average emissions factor (AEF) calculated. These are useful for assigning a net emission burden to a facility. In addition, marginal emissions factors (MEFs) for estimating the effect of changing levels of usage can be calculated. MEFs are needed because emission rates at the margin are likely to diverge from the average. The overall objective of this task is to develop methods for estimating AEFs and MEFs that can provide an estimate of the combined net CO2 emissions from all generating facilities that provide electricity to California electricity customers. The method covers the historic period from 1990 to the present, with 1990 and 1999 used as test years. The factors derived take into account the location and time of consumption, direct contracts for power which may have certain atypical characteristics (e.g., ''green'' electricity from renewable resources), resource mixes of electricity providers, import and export of electricity from utility owned and other sources, and electricity from cogeneration. It is assumed that the factors developed in this way will diverge considerably from simple statewide AEF estimates based on standardized inventory estimates that use conventions inconsistent with the goals of this work. A notable example concerns the treatment of imports, which despite providing a significant share of California's electricity supply picture, are excluded from inventory estimates of emissions, which are based on geographical boundaries of the state.

Marnay, Chris; Fisher, Diane; Murtishaw, Scott; Phadke, Amol; Price, Lynn; Sathaye, Jayant

2002-08-01T23:59:59.000Z

265

Study on Relay Protection Coordination in Complex Auxiliary Power System  

Science Conference Proceedings (OSTI)

In many large-scale power plants, the structure of its auxiliary power system are complex, and the coordination of its relay protections is difficult. The Three Gorges Hydropower Plant is the largest installed capacity of power plants with complex auxiliary ... Keywords: auxiliary power system, relay protection, coordination

Yawen Yi; Jun Xie; Na Yi

2010-06-01T23:59:59.000Z

266

NREL: Concentrating Solar Power Research - Concentrating Solar Power  

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

Concentrating Solar Power Resource Maps Concentrating Solar Power Resource Maps These direct-normal solar radiation maps-filtered by solar resource and land availability-identify the most economically suitable lands available for deploying of large-scale concentrating solar power plants in the southwestern United States. Each of the following seven states, as well as the southwestern U.S. region, has two maps: the left and right maps represent analyses excluding land with slopes >1% and >3%, respectively. Lower-resolution jpg versions are available below; much higher-resolution pdf files, suitable for plotting large-scale posters, can be requested. You can also access an unfiltered direct-normal solar radiation map of the southwestern United States. Download Adobe Reader. Southwestern U.S.

267

BNL | Large Synoptic Survey Telescope (LSST)  

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

Large Synoptic Survey Telescope Large Synoptic Survey Telescope About LSST Digital Sensor Array Brookhaven & Physics of the Universe LSST Project Website LSST: Providing an Unprecedented View of the Cosmos rendering of the LSST site in Chile A revolutionary 3.2 gigapixel camera mounted in a massive ground-based telescope will produce unprecedented views of the cosmos, driving discoveries with the widest, densest, and most complete images of our universe ever captured. New Visions The Large Synoptic Survey Telescope (LSST) will peer into space as no other telescope can. This new facility will create an unparalleled wide-field astronomical survey of our universe - wider and deeper in volume than all previous telescopes combined. The combination of a 3200 megapixel camera sensor array, a powerful supercomputer, a cutting-edge data processing and

268

PowerChoice Residential Customer Response to TOU Rates  

E-Print Network (OSTI)

1983. Time-of-Day Electricity Rates for the United States.to Voluntary Time-of-Use Electricity Rates. Resource andCompared to your old electricity rate, would you say that

Peters, Jane S.

2010-01-01T23:59:59.000Z

269

PowerChoice Residential Customer Response to TOU Rates  

E-Print Network (OSTI)

1983. Time-of-Day Electricity Rates for the United States.Effect of Time-of-Use Rates In the Los Angeles ElectricityCustomer Response to TOU Rates. Research Into Action. Public

Peters, Jane S.

2010-01-01T23:59:59.000Z

270

Power monitors provide quality power and service  

SciTech Connect

Today`s loads require much more reliability and quality of service than in the past. For example, whether Automatic Teller Machines (ATM) function properly may greatly influence the public image of the bank and the local electric utility. Steve Garnick, electrical engineer with the electric division, Westerville, Ohio, says, {open_quotes}We have a major bank`s data center located in Westerville that processes customer accounts and ATM network transactions over a multi-state area, as well as performing data processing for a number of other large companies. If our electric system were to experience a major disturbance, there could be a lot of ATM customers around the country that will be unable to get their money. Obviously, we want to prevent that from happening.{close_quotes} Power monitoring systems are used not only by electric utilities but industrial, institutional, and commercial facilities to manage their total electrical system. The systems provide information on energy costs and the costs of operation and maintenance, while providing information that helps users make the best use of the power equipment itself.

NONE

1995-05-01T23:59:59.000Z

271

High-density thermoelectric power generation and nanoscale thermal metrology  

E-Print Network (OSTI)

Thermoelectric power generation has been around for over 50 years but has seen very little large scale implementation due to the inherently low efficiencies and powers available from known materials. Recent material advances ...

Mayer, Peter (Peter Matthew), 1978-

2007-01-01T23:59:59.000Z

272

Dynamic Performance Validation in the Western Power System  

Science Conference Proceedings (OSTI)

Information, in all its forms, is the key to the reliable and economic performance of large power systems. This paper describes the efforts underway to meet the dynamic information needs of the western power transmission system.

Hauer, John F.; Beshir, Mo; Mittelstadt, Bill

2000-09-30T23:59:59.000Z

273

Large-scale solar projects in the United States have made great...  

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

the United States have made great progress in delivering competitively priced renewable electricity September 2013 The price at which electricity from large-scale solar power...

274

Development of a large scale flexible LED display matrix for the screen industry.  

E-Print Network (OSTI)

??This project addresses the viability of lightweight, low power consumption, flexible, large format LED screens. The investigation encompasses all aspects of the electrical and mechanical (more)

Xavier, Dominic Michael

2013-01-01T23:59:59.000Z

275

ESS 2012 Peer Review - Nitrogen-Oxygen Battery for Large Scale...  

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

2012 Frank Delnick, David Ingersoll, Karen Waldrip, Peter Feibelman NitrogenOxygen Battery A Transformational Architecture for Large Scale Energy Storage Power Sources...

276

Wave Power Demonstration Project at Reedsport, Oregon  

SciTech Connect

Ocean wave power can be a significant source of large?scale, renewable energy for the US electrical grid. The Electrical Power Research Institute (EPRI) conservatively estimated that 20% of all US electricity could be generated by wave energy. Ocean Power Technologies, Inc. (OPT), with funding from private sources and the US Navy, developed the PowerBuoy? to generate renewable energy from the readily available power in ocean waves. OPT's PowerBuoy converts the energy in ocean waves to electricity using the rise and fall of waves to move the buoy up and down (mechanical stroking) which drives an electric generator. This electricity is then conditioned and transmitted ashore as high?voltage power via underwater cable. OPT's wave power generation system includes sophisticated techniques to automatically tune the system for efficient conversion of random wave energy into low cost green electricity, for disconnecting the system in large waves for hardware safety and protection, and for automatically restoring operation when wave conditions normalize. As the first utility scale wave power project in the US, the Wave Power Demonstration Project at Reedsport, OR, will consist of 10 PowerBuoys located 2.5 miles off the coast. This U.S. Department of Energy Grant funding along with funding from PNGC Power, an Oregon?based electric power cooperative, was utilized for the design completion, fabrication, assembly and factory testing of the first PowerBuoy for the Reedsport project. At this time, the design and fabrication of this first PowerBuoy and factory testing of the power take?off subsystem are complete; additionally the power take?off subsystem has been successfully integrated into the spar.

Mekhiche, Mike [Principal Investigator] [Principal Investigator; Downie, Bruce [Project Manager] [Project Manager

2013-10-21T23:59:59.000Z

277

Global implications of standby power use  

SciTech Connect

Separate studies indicate that standby power is responsible for 20-60 W per home in developed countries. Standby power is responsible for about 2% of OECD countries total electricity consumption and the related power generation generates almost 1% of their carbon emissions. Replacement of existing appliances with those appliances having the lowest standby would reduce total standby power consumption by over 70%. The resulting reductions in carbon emissions would meet over 3% of OECD's total Kyoto commitments. Other strategies may cut more carbon emissions, but standby power is unique in that the reductions are best accomplished through international collaboration and whose costs and large benefits would be spread over all countries.

Lebot, Benoit; Meier, Alan; Anglade, Alain

2000-05-01T23:59:59.000Z

278

CloudMonitor: Profiling Power Usage  

E-Print Network (OSTI)

In Cloud Computing platforms the addition of hardware monitoring devices to gather power usage data can be impractical or uneconomical due to the large number of machines to be metered. CloudMonitor, a monitoring tool that can generate power models for software-based power estimation, can provide insights to the energy costs of deployments without additional hardware. Accurate power usage data leads to the possibility of Cloud providers creating a separate tariff for power and therefore incentivizing software developers to create energy-efficient applications.

Smith, James William; Ward, Jonathan Stuart; Sommerville, Ian

2012-01-01T23:59:59.000Z

279

Power supply design for Hadron Facility  

DOE Green Energy (OSTI)

Recently, a study investigated the feasibility of building a large 60 GeV, kaon factory accelerator. This paper presents the conceptual design of the magnet power supplies and energy storage system. In this study the following three systems were investigated: (a) power supply using storage generator; (b) power supply using inductive storage device; and (c) resonant power supplies. These systems were analyzed from both technical and economical points of view. It was found that all three systems are feasible and can be built using commercially available components. From a technical point of view, the system using inductive storage is the most advantageous. The resonant power supply is the most economical solution.

Karady, G.; Kansog, J.; Thiessen, H.A.; Schneider, E.

1987-01-01T23:59:59.000Z

280

Concentrating solar power | Open Energy Information  

Open Energy Info (EERE)

worldwide. Many power plants today use fossil fuels as a heat source to boil water. The steam from the boiling water spins a large turbine, which drives a generator to produce...

Note: This page contains sample records for the topic "large power time-of-day" 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

Japanese nuclear power and the Kyoto agreement  

E-Print Network (OSTI)

We find that, on an economic basis, nuclear power could make a substantial contribution for meeting the emissions target Japan agreed to in the Kyoto Protocol. It is unlikely however that the contribution would be as large ...

Babiker, Mustafa H.M.; Reilly, John M.; Ellerman, A. Denny.

282

Linear Concentrator Systems for Concentrating Solar Power  

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

Linear concentrating solar power (CSP) collectors capture the sun's energy with large mirrors that reflect and focus the sunlight onto a linear receiver tube. The receiver contains a fluid that is...

283

Real time contingency analysis for power grids  

Science Conference Proceedings (OSTI)

Modern power grids are continuously monitored by trained system operators equipped with sophisticated monitoring and control systems. Despite such precautionary measures, large blackouts, that affect more than a million consumers, occur quite frequently. ...

Anshul Mittal; Jagabondhu Hazra; Nikhil Jain; Vivek Goyal; Deva P. Seetharam; Yogish Sabharwal

2011-08-01T23:59:59.000Z

284

Low-power techniques for video decoding  

E-Print Network (OSTI)

The H.264 video coding standard can deliver high compression efficiency at a cost of large complexity and power. The increasing popularity of video capture and playback on portable devices requires that the energy of the ...

Finchelstein, Daniel Frederic

2009-01-01T23:59:59.000Z

285

South Dakota's At-large congressional district: Energy Resources | Open  

Open Energy Info (EERE)

Dakota's At-large congressional district: Energy Resources Dakota's At-large congressional district: Energy Resources Jump to: navigation, search Equivalent URI DBpedia This article is a stub. You can help OpenEI by expanding it. This page represents a congressional district in South Dakota. Contents 1 US Recovery Act Smart Grid Projects in South Dakota's At-large congressional district 2 Registered Research Institutions in South Dakota's At-large congressional district 3 Registered Policy Organizations in South Dakota's At-large congressional district 4 Registered Energy Companies in South Dakota's At-large congressional district 5 Utility Companies in South Dakota's At-large congressional district US Recovery Act Smart Grid Projects in South Dakota's At-large congressional district Black Hills Power, Inc. Smart Grid Project

286

New Technology and Lunar Power Option for Power Beaming Propulsion  

DOE Green Energy (OSTI)

Orbit raising missions (LEO to GEO or beyond) are the only missions with enough current traffic to be seriously considered for near-term power beaming propulsion. Even these missions cannot justify the development expenditures required to deploy the required new laser, optical and propulsion technologies or the programmatic risks. To be deployed, the laser and optics technologies must be spin-offs of other funded programs. The manned lunar base nighttime power requirements may justify a major power beaming program with 2MW lasers and large optical systems. New laser and optical technologies may now make this mission plausible. If deployed these systems could be diverted for power beaming propulsion applications. Propulsion options include a thermal system with an Isp near 1000 sec., a new optical coupled thermal system with an Isp over 2000 sec. photovoltaic-ion propulsion systems with an Isp near 3000 sec., and a possible new optical coupled thermal system with an Isp over 2000 sec.

Kare, J; Early, J; Krupke, W; Beach, R

2004-10-11T23:59:59.000Z

287

Low Power Design Low PowerLow Power  

E-Print Network (OSTI)

, correlations among system state transitions #12;Low Power Design USC/LPCAD Page 11 USCUSC Low PowerLow Power for the requestsIncoming rates for the requests 21,rr 12 ,rr, :, : State transition ratesState transition rates OS and hardware Abstract, hierarchical finite-state machine Each state represents power

Pedram, Massoud

288

NREL: TroughNet - Parabolic Trough Power Plant System Technology  

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

Parabolic Trough Power Plant System Technology Parabolic Trough Power Plant System Technology A parabolic trough solar power plant uses a large field of collectors to supply thermal energy to a conventional power plant. Because they use conventional power cycles, parabolic trough power plants can be hybridized-other fuels can be used to back up the solar power. Like all power cycles, trough power plants also need a cooling system to transfer waste heat to the environment. Parabolic trough power plant technologies include: Direct steam generation Fossil-fired (hybrid) backup Operation and maintenance Power cycles Steam Rankine Organic Rankine Combined Wet and dry cooling Power Cycles A photo of an aerial view of a power plant in the middle of a solar field with rows and rows of parabolic troughs tracking. The cooling towers can be seen with the water plume rising into the air. The white water tanks can be seen in the background.

289

Power management system  

DOE Patents (OSTI)

A method of managing power resources for an electrical system of a vehicle may include identifying enabled power sources from among a plurality of power sources in electrical communication with the electrical system and calculating a threshold power value for the enabled power sources. A total power load placed on the electrical system by one or more power consumers may be measured. If the total power load exceeds the threshold power value, then a determination may be made as to whether one or more additional power sources is available from among the plurality of power sources. At least one of the one or more additional power sources may be enabled, if available.

Algrain, Marcelo C. (Peoria, IL); Johnson, Kris W. (Washington, IL); Akasam, Sivaprasad (Peoria, IL); Hoff, Brian D. (East Peoria, IL)

2007-10-02T23:59:59.000Z

290

Solar powered desalination system  

E-Print Network (OSTI)

1.13: California Power Generation by Source31for hydro- electric power generation would be reached inother end users include the power generation industry (4%),

Mateo, Tiffany Alisa

2011-01-01T23:59:59.000Z

291

Solar powered desalination system  

E-Print Network (OSTI)

2008, uses concentrated solar power to split water. Figurethe main reason the potential for solar power is boundless.a clean energy source, solar power is inexhaustible, fairly

Mateo, Tiffany Alisa

2011-01-01T23:59:59.000Z

292

Southwestern Power Administration  

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

POTC Home Courses Instructors NERC Continuing Education Virtual University Power Operations Training Center You'll find the "Power" of learning at Southwestern's Power Operations...

293

Southwestern Power Administration  

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

Schedules Skip Navigation Links Excess Energy Hydro Peaking Power Hydro Power and Energy Sold to Sam Rayburn Dam Electric Cooperative (Rayburn) Hydro Power and Energy Sold to Sam...

294

Integrated Photonics for Low-Power Packet Networking  

E-Print Network (OSTI)

MARCH/APRIL 2011 Integrated Photonics for Low-Power Packetmaximizing the bene- ?ts of photonics technology is highlypower, and large-scale photonics integration. In this paper,

2011-01-01T23:59:59.000Z

295

Identification of Severe Multiple Contingencies in Electric Power Networks  

E-Print Network (OSTI)

we identify a few transmission lines in a large power systemphase angles ? . When transmission lines are removed fromthat afternoon, just three transmission lines that underwent

Donde, Vaibhav; Lopez, Vanessa; Lesieutre, Bernard; Pinar, Ali; Yang, Chao; Meza, Juan

2005-01-01T23:59:59.000Z

296

Energy-based analysis of utility scale hybrid power systems.  

E-Print Network (OSTI)

??The promise of large-scale use of renewables such as wind and solar for supplying electrical power is tempered by the sources' transient behavior and the (more)

Agyenim-Boateng, Kwame

2011-01-01T23:59:59.000Z

297

Hybrid-Intelligent POWER HI-POWER  

Science Conference Proceedings (OSTI)

... T T T A A A SMART-T Current Situation Current Situation ... Page 10. 22 Power Grid Plug & Play architecture Multiple power sources Renewables ...

2013-09-22T23:59:59.000Z

298

Reducing Energy Costs And Minimizing Capital Requirements: Case Studies of Thermal Energy Storage (TES)  

E-Print Network (OSTI)

Large cooling systems typically represent substantial capital investments and incur high operating energy costs. Cooling loads tend to peak during times of year and times of day when high ambient temperatures create a maximum demand for power, and thus during those times when power has its highest cost or value. Thermal Energy Storage (TES) provides a means of de-coupling the generation of cooling from the provision of cooling to the peak cooling loads. In this manner, peak power demand is reduced, time-of day energy costs can be minimized, and real-time variations in power value can be used to the advantage of the energy consumer.

Andrepont, J. S.

2007-01-01T23:59:59.000Z

299

Large forging manufacturing process  

DOE Patents (OSTI)

A process for forging large components of Alloy 718 material so that the components do not exhibit abnormal grain growth includes the steps of: a) providing a billet with an average grain size between ASTM 0 and ASTM 3; b) heating the billet to a temperature of between 1750.degree. F. and 1800.degree. F.; c) upsetting the billet to obtain a component part with a minimum strain of 0.125 in at least selected areas of the part; d) reheating the component part to a temperature between 1750.degree. F. and 1800.degree. F.; e) upsetting the component part to a final configuration such that said selected areas receive no strains between 0.01 and 0.125; f) solution treating the component part at a temperature of between 1725.degree. F. and 1750.degree. F.; and g) aging the component part over predetermined times at different temperatures. A modified process achieves abnormal grain growth in selected areas of a component where desirable.

Thamboo, Samuel V. (Latham, NY); Yang, Ling (Niskayuna, NY)

2002-01-01T23:59:59.000Z

300

POWER REACTOR  

DOE Patents (OSTI)

A fast nuclear reactor system ls described for producing power and radioactive isotopes. The reactor core is of the heterogeneous, fluid sealed type comprised of vertically arranged elongated tubular fuel elements having vertical coolant passages. The active portion is surrounded by a neutron reflector and a shield. The system includes pumps and heat exchangers for the primary and secondary coolant circuits. The core, primary coolant pump and primary heat exchanger are disposed within an irapenforate tank which is filled with the primary coolant, in this case a liquid metal such as Na or NaK, to completely submerge these elements. The tank is completely surrounded by a thick walled concrete shield. This reactor system utilizes enriched uranium or plutonium as the fissionable material, uranium or thorium as a diluent and thorium or uranium containing less than 0 7% of the U/sup 235/ isotope as a fertile material.

Zinn, W.H.

1958-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "large power time-of-day" 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

Power oscillator  

DOE Patents (OSTI)

An oscillator includes an amplifier having an input and an output, and an impedance transformation network connected between the input of the amplifier and the output of the amplifier, wherein the impedance transformation network is configured to provide suitable positive feedback from the output of the amplifier to the input of the amplifier to initiate and sustain an oscillating condition, and wherein the impedance transformation network is configured to protect the input of the amplifier from a destructive feedback signal. One example of the oscillator is a single active element device capable of providing over 70 watts of power at over 70% efficiency. Various control circuits may be employed to match the driving frequency of the oscillator to a plurality of tuning states of the lamp.

Gitsevich, Aleksandr (Montgomery Village, MD)

2001-01-01T23:59:59.000Z

302

Power plant  

SciTech Connect

A two stroke internal combustion engine is described that has at least one cylinder within which a piston reciprocates. The engine is joined to a gearbox which includes a ring gear. A pair of gears having diameters half that of the ring gear move within the latter. At least one of the pair of gears is connected to a piston by a pin extending between the piston and the periphery of said gear. An additional pair of gears are fixed to respective ones of the first-mentioned gear pair and are operatively joined to a pinion to which a drive shaft is secured. A turbine and filter arrangement is positioned on the side of the engine opposite the gearbox whereby exhaust gases from the engine are directed to the turbine to develop power at an output drive shaft joined to the turbine and to filter pollutants from the gases.

Finn, H.I. Jr.

1978-10-24T23:59:59.000Z

303

Powerful tool to expand . . .  

E-Print Network (OSTI)

With the extensive inclusion of document, especially text, in the business systems, data mining does not cover the full scope of Business Intelligence. Data mining cannot deliver its impact on extracting useful details from the large collection of unstructured and semi-structured written materials based on natural languages. The most pressing issue is to draw the potential business intelligence from text. In order to gain competitive advantages for the business, it is necessary to develop the new powerful tool, text mining, to expand the scope of business intelligence. In this paper, we will work out the strong points of text mining in extracting business intelligence from huge amount of textual information sources within business systems. We will apply text mining to each stage of Business Intelligence systems to prove that text mining is the powerful tool to expand the scope of BI. After reviewing basic definitions and some related technologies, we will discuss the relationship and the benefits of these to text mining. Some examples and applications of text mining will also be given. The motivation behind is to develop new approach to effective and efficient textual information analysis. Thus we can expand the scope of Business Intelligence using the powerful tool, text mining.

Li Gao; et al.

2005-01-01T23:59:59.000Z

304

A LUNAR POWER PLANT  

SciTech Connect

A concept of a nuclear power plant to be assembled on earth and operated on the moon is presented. The two principal design objectives are reliability and high specific power. Wherever there is an incompatibility between these two objectives, the decision favors reliability. The design is based on the premise that the power plant must be designed on the basis of current technology and with a minimum amount of research and development. The principal components consist of a fast reactor in a direct cycle with a mercury-vapor turbine. The high- frequency generator, hydrogen compressor for the generator cooling system, mercury-recirculating pump, and condensate pump are on an extension of the turbine shaft. Ths mercury vapor is condensed and the hydrogen cooled in wing radiators. The reactor is of a construction quite similar to EBR-I Mark IlI for which there is a large amount of operating experience. The radiator is a vertical tube-and-fin type built in concentric cylindrical sections of increseing diameter. The curved headers are connected by swivel joints so that, upon arrival, the radiator can be quickly unfolded from the compact cylindrical package it formed during transportation. (auth)

Armstrong, R.H.; Carter, J.C.; Hummel, H.H.; Janicke, M.J.; Marchaterre, J.F.

1960-12-01T23:59:59.000Z

305

Wyoming's At-large congressional district: Energy Resources | Open Energy  

Open Energy Info (EERE)

Wyoming's At-large congressional district: Energy Resources Wyoming's At-large congressional district: Energy Resources Jump to: navigation, search Equivalent URI DBpedia This article is a stub. You can help OpenEI by expanding it. This page represents a congressional district in Wyoming. US Recovery Act Smart Grid Projects in Wyoming's At-large congressional district Cheyenne Light, Fuel and Power Company Smart Grid Project Powder River Energy Corporation Smart Grid Project Registered Energy Companies in Wyoming's At-large congressional district Blue Sky Batteries Inc Blue Sky Group Inc HTH Wind Energy Inc LappinTech LLC Nacel Energy Nanomaterials Discovery Corporation NDC Pathfinder Renewable Wind Energy PowerSHIFT Energy Company Inc TMA Global Wind Energy Systems TriLateral Energy LLC Utility Companies in Wyoming's At-large congressional district

306

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

E-Print Network (OSTI)

systems, the integration of large-scale renewable energyof wind energy integration into the electric power system,

Mills, Andrew

2013-01-01T23:59:59.000Z

307

Village of Benton, Wisconsin (Utility Company) | Open Energy Information  

Open Energy Info (EERE)

Wisconsin (Utility Company) Wisconsin (Utility Company) Jump to: navigation, search Name Village of Benton Place Wisconsin Utility Id 1585 Utility Location Yes Ownership M NERC Location RFC NERC RFC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Cg-1 Commercial Service Commercial Cg-1 Commercial Service with Parallel Generation(20kW or less) Commercial Cp-2 Voluntary Large Power Time-of-Day Industrial Cp-2 Voluntary Large Power Time-of-Day Primary Metering Discount & Transformer Ownership Discount Industrial Cp-2 Voluntary Large Power Time-of-Day Primary Metering Discount with

308

Piedmont Electric Member Corp | Open Energy Information  

Open Energy Info (EERE)

Piedmont Electric Member Corp Piedmont Electric Member Corp Place North Carolina Utility Id 15023 Utility Location Yes Ownership C NERC Location SERC NERC SERC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png COOPERATIVE-OWNED AND MAINTAINED METERED OUTDOOR LIGHTING SERVICE Lighting GENERAL SERVICE Commercial GENERAL SERVICE-TIME-OF-DAY Commercial LARGE POWER SERVICE-LP Industrial LARGE POWER TIME OF DAY- PLANTATION PIPE LINE-LP-PPL-TOD. Industrial LARGE POWER-TIME-OF-DAY(LP-TOD) Industrial MEDIUM RENEWABLE GENERATION NET METERING RIDER(MRG-NM) NC GREENPOWER PROGRAM -1 Commercial

309

Analyzing the interaction between state tax incentives and the federal production tax credit for wind power  

E-Print Network (OSTI)

Production Tax Credit for Wind Power Ryan Wiser and MarkState Policies Foster a Wind Power Resurgence The ImportancePTC) for large-scale wind power projects. While the federal

Wiser, Ryan; Bolinger, Mark; Gagliano, Troy

2002-01-01T23:59:59.000Z

310

Large hydrofoil transmission system study. Final report  

SciTech Connect

This report presents the results of a study to determine the performance and physical characteristics of an ac electrical system intended for use as the propulsion system of large hydrofoils. Section I provides a technical description of the system in terms of performance, weight and component characteristics. Section II describes anticipated problems associated with development of the system and its components, and includes activities through design and fabrication, and qualification of an integrated system. Two system configurations are considereed in this study. Configuration I which is the preferred one, consists of two direct-turbine-driven ac generators supplying electrical power to either foilborne or hullborne propeller induction drive motors. Conventional switchgear is used for connecting the generator to either the foil or hull drive motors. Each induction motor supplies power to a fixed pitch propeller via a planetary type gearbox. Speed and power output of each induction motor is controlled by fuel to the turbine. Configuration II consists of independent foilborne and hullborne propulsion systems. For takeoff and foilborne operation, two direct LM2500 turbine-drive ac generators supply electrical power to the foil propeller induction motors. Operation in this mode is identical to Configuration I. Configuration II provides a trade off between greater system weight, against a lower hullborne fuel consumption rate obtained by operating smaller turbines in hullborne mode. This provides, potentially, a greater hullborne range.

1977-10-11T23:59:59.000Z

311

Strongly Coupled Striped Superconductor with Large Modulation  

E-Print Network (OSTI)

We analytically calculate properties of a strongly coupled striped superconductor, with the charge density wave sourced by a modulated chemical potential, in the large modulation wavenumber Q limit. In the absence of a homogeneous term in the chemical potential, we show that the critical temperature scales as a negative power of Q for scaling dimensions \\Delta 3/2, there is no phase transition above a certain critical value of Q. The condensate is found to scale as a positive power of Q such that the gap is proportional to Q. We discuss how these results change if a homogeneous term is added to the chemical potential. We compare our analytic results with numerical calculations whenever the latter are available and find good agreement.

Jimmy A. Hutasoit; Suman Ganguli; George Siopsis; Jason Therrien

2011-10-20T23:59:59.000Z

312

Large electrical-energy storage facilities  

SciTech Connect

Problems associated with the utilization of various types of energy-storage facilities are considered, three areas being singled out: operation during the variable portion of the load curve with double regulation effect, handling of peaks and the filling in of off-peak dips in the load curve; the generation of power impulses through the use of stored energy for short-term supply of load; and the conversion of one form of energy to another. The present-day state of development and introduction of storage facilities of various kinds is described. The conditions for utilization of large-scale storage on the power systems of the USSR are evaluated, and the principles for determining the economic efficiency are formulated.

Ershevich, V.V.

1985-01-01T23:59:59.000Z

313

Electric Power Annual  

U.S. Energy Information Administration (EIA)

Electric Power Sector ; Period Total (all sectors) Electric Utilities Independent Power Producers Commercial Sector Industrial Sector; Annual Totals: ...

314

Electric Power Metrology Portal  

Science Conference Proceedings (OSTI)

... Electric Power Metrology and the Smart Grid Our country's way of life depends on the electric power distribution system. ...

2012-12-26T23:59:59.000Z

315

Putting Economic Power in Distributed Power  

Reports and Publications (EIA)

Electric Power Research Institute's Distributed Resources Week 1997 (October 22, 1997)AUTHOR: John Herbert

Information Center

1997-10-22T23:59:59.000Z

316

City of Salem, Virginia (Utility Company) | Open Energy Information  

Open Energy Info (EERE)

Virginia (Utility Company) Virginia (Utility Company) Jump to: navigation, search Name City of Salem Place Virginia Utility Id 16558 Utility Location Yes Ownership M NERC Location RFC NERC RFC Yes Activity Buying Transmission Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Schedule A.F.L.S. - T.O.D (Atheletic Field Lighting Service - Time-of Day) Lighting Schedule L.G.S. (Large General Service) Primary Industrial Schedule L.G.S. (Large General Service) Secondary Industrial Schedule L.P.S. - T.O.D. (Large Power Service - Time-of Day; Secondary) Industrial Schedule L.P.S. - T.O.D. (Large Power Service - Time-of day) Primary

317

Overview of M-C Power`s MCFC power generation system  

SciTech Connect

The IMHEX{reg_sign} fuel cell power generation system is a skid mounted power plant which efficiently generates electricity and useful thermal energy. The primary benefits are its high electric generation efficiency (50% or greater), modular capacities (500 kW to 3 MW per unit) and minimal environmental impacts (less than 1 ppM NO{sub x}). A cost effective, modular capacity fuel cell power plant provides the industry with an attractive alternative to large central station facilities, and its advantages have the potential to optimize the way electric power is generated and distributed to the users. Environmental issues are becoming the single most uncertain aspect of the power business. These issues may be manifested in air emissions permits or allowances for NO{sub x} or SO{sub 2}, energy taxes, CO{sub 2} limits, ``carbon taxes,`` etc. and may appear as siting permits for generation, transmission, or distribution facilities. Utilities are ``down-sizing`` with the goal of becoming the lowest cost supplier of electricity and are beginning to examine the concepts of ``energy service`` to improve their economic competitiveness. These issues are leading utilities to examine the benefits of distributed generation. Siting small capacity generation near the customer loads or at distribution substations can improve system efficiency and quality while reducing distribution system costs. The advantages that fuel cell power plants have over conventional technologies are critical to the success of these evolving opportunities in the power generation marketplace.

Benjamin, T.G.; Woods, R.R.

1993-11-01T23:59:59.000Z

318

Village of Prairie Du Sac, Wisconsin (Utility Company) | Open Energy  

Open Energy Info (EERE)

Du Sac, Wisconsin (Utility Company) Du Sac, Wisconsin (Utility Company) Jump to: navigation, search Name Village of Prairie Du Sac Place Wisconsin Utility Id 15312 Utility Location Yes Ownership M NERC Location MRO NERC MRO Yes ISO MISO Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Cp-1 Small Power Service Industrial Cp-1 Small Power Service with Parallel Generation(20kW or less) Industrial Cp-1 TOD Small Power Optional Time-of-Day Service with Parallel Generation(20kW or less) Industrial Cp-1 TOD Small Power Optional Time-of-Day Service Industrial Cp-2 Large Power Time-of-Day Service Industrial

319

A bio-inspired multi-agent system framework for real-time load management in all-electric ship power systems  

Science Conference Proceedings (OSTI)

All-electric ship power systems have limited generation capacity and finite rotating inertia compared with large power systems. Moreover, all-electric ship power systems include large portions of nonlinear loads and dynamic loads relative to the total ...

Xianyong Feng / Karen L. Butler-Purry

2012-01-01T23:59:59.000Z

320

Building Energy Software Tools Directory: ID-Spec Large  

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

ID-Spec Large ID-Spec Large ID-Spec Large is software for the electrical installation design of industrial and tertiary buildings. It helps to design a green electrical installation by enabling the user to: - Assess the impact of selecting energy efficiency solutions like power factor correction and low losses transformers in terms of cost savings - Reduce power losses and consequently carbon emissions in the electrical installation by optimizing equipment locations - Reduce investment cost while using less raw materials by optimizing length and cross-section of cables - Assess the percentage of recyclable materials for cables and busbar trunking systems. Screen Shots Keywords Electrical installation design, power losses assessment, CO2 emissions, quantity of conductors

Note: This page contains sample records for the topic "large power time-of-day" 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

Coal Power Plant Database | Open Energy Information  

Open Energy Info (EERE)

Power Plant Database Power Plant Database Jump to: navigation, search Name Coal Power Plant Database Data Format Excel Spreadsheet, Excel Pivot Table, Access Database Geographic Scope United States TODO: Import actual dataset contents into OpenEI The Coal Power Plant Database (CPPDB) is a dataset which "consolidates large quantities of information on coal-fired power plants in a single location."[1] It is produced by the National Energy Technology Laboratory (NETL). External links 2007 Edition Excel Spreadsheet Excel Pivot Table Access Database User's Manual (PDF) References ↑ "User's Manual: Coal Power Plant Database" Retrieved from "http://en.openei.org/w/index.php?title=Coal_Power_Plant_Database&oldid=273301" Categories: Datasets Articles with outstanding TODO tasks

322

Stakeholder Engagement and Outreach: Public Power  

Wind Powering America (EERE)

Resources Regional Activities State Activities State Lands Siting Public Power The U.S. utility market consists of investor-owned utilities, public-owned utilities, cooperatives, and Federal utilities. The information below shows you what three public power markets are doing with wind energy. An image of the cover of the Wind Power for Municipal Utilities publication. Wind Power for Rural Electric Utilities The nation's electric cooperative utilities have begun to include wind power in their energy supply portfolios. Read the stories of four wind power pioneers. Wind Power for Municipal Utilities From Oregon to Maine, municipal utilities are beginning to harness the wind. Read stories about six of the early pioneers, ranging in size from small to large. Public-Owned Utilities

323

CALIFORNIA ENERGY Large HVAC Building  

E-Print Network (OSTI)

CALIFORNIA ENERGY COMMISSION Large HVAC Building Survey Information Database of Buildings over 100 Design of Large Commercial HVAC Systems research project, one of six research elements in the Integrated Design of Large Commercial HVAC Systems Integrated Design of Small Commercial HVAC Systems Integrated

324

Power-Pro: Programmable Power Management Architecture  

E-Print Network (OSTI)

This paper presents Power-Pro architecture (Programmable Power Management Architecture), a novel processor architecture for power reduction. Power-Pro architecture has following two functionalities, (i) Supply voltage and clock frequency can be dynamically varied, (ii) Active data-path width can be dynamically adjusted to requirement of application programs. For the application programs which require less performance or less data-path width, Power-Pro architecture realize dramatic power reduction. I. Introduction With recent popularizations in portable, batterypowered devices such as digital cellular telephones and personal digital assistants, minimizing power consumption of VLSI circuits becomes more important. As the system level power reduction techniques, the choice of optimal supply voltage(V DD ) and optimal active data-path width have strong impacts. In this paper we propose novel processor architecture Power-Pro [2] which can vary VDD and active data-path width of processor ...

Tohru Ishihara; Hiroto Yasuura; Programmable Power Management

1998-01-01T23:59:59.000Z

325

Lunar Wireless Power Transfer Feasibility Study  

Science Conference Proceedings (OSTI)

This study examines the feasibility of a multi-kilowatt wireless radio frequency (RF) power system to transfer power between lunar base facilities. Initial analyses, show that wireless power transfer (WPT) systems can be more efficient and less expensive than traditional wired approaches for certain lunar and terrestrial applications. The study includes evaluations of the fundamental limitations of lunar WPT systems, the interrelationships of possible operational parameters, and a baseline design approach for a notionial system that could be used in the near future to power remote facilities at a lunar base. Our notional system includes state-of-the-art photovoltaics (PVs), high-efficiency microwave transmitters, low-mass large-aperture high-power transmit antennas, high-efficiency large-area rectenna receiving arrays, and reconfigurable DC combining circuitry.

Sheldon Freid, et al.

2008-06-01T23:59:59.000Z

326

Electric power 2007  

SciTech Connect

Subjects covered include: power industry trends - near term fuel strategies - price/quality/delivery/opportunity; generating fleet optimization and plant optimization; power plant safety and security; coal power plants - upgrades and new capacity; IGCC, advanced combustion and CO{sub 2} capture technologies; gas turbine and combined cycle power plants; nuclear power; renewable power; plant operations and maintenance; power plant components - design and operation; environmental; regulatory issues, strategies and technologies; and advanced energy strategies and technologies. The presentations are in pdf format.

NONE

2007-07-01T23:59:59.000Z

327

PowerPoint Presentation  

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

Vehicle to Grid Vehicle to Grid Demonstration Project by Willett Kempton College of Earth, Ocean, and Environment Department of Electrical and Computer Engineering Center for Carbon-free Power Integration University of Delaware 2010 Smart Grid Peer Review Office of Electricity Delivery and Energy Reliability, DOE Purpose & Objectives * Create the Gri d I ntegrated V ehi cl e (GIV), then operate, permit, and test it * A nalyze vehicle use, our vehicles & large data base of 400 vehicles daily driving * A nalyze market for EVs and V2G * Develop softw are to dispatch pow er from vehicles -> Operate in real time! * Tw o-year aw ard, $750,000, close N ov '10 Activities (2-year) * Research: Driving patterns; economic value; self-learning trip predictions * Industrial: Facilitate EV retrofit operation

328

Bulk Power Transmission Study  

E-Print Network (OSTI)

"Texans now have a choice. We can become more efficient and maintain our standard of living, or we can continue business as usual and watch our standard of living erode from competition from other regions. In the past, except for improving reliability, there was no need for a strong transmission system. When Texas generation was primarily gas fueled, the extensive natural gas pipeline network moved energy easily within the state. In recent years two things have changed: 1. Electric utilities have made extensive investment in lignite, coal, and nuclear plants and, 2. Improvements in gas turbine technology and the removal of institutional barriers has encouraged cogeneration at many of our energy intensive process industries. This energy diversity means that there are now significant differences in energy costs between units. The variable costs of generation of power can vary between units by a ratio of 2 or 3 to 1 and this difference will be accentuated when energy costs rise (and they will; its a question of when, not if). The potential for costs savings by optional dispatching of the entire interconnected system are greater than ever before as demonstrated by the PUC's Bulk Power Transmission Study. And the potential can be enhanced with added transmission system investment. Cogeneration and small power production has proven to be the most cost effective way for Texas to add additional generating capacity needed to supply an economy that is starting to rebound and to replace old, obsolete power plants. The freedom to locate these facilities at the fuel source or at the site of large thermal demand makes real economic and environmental sense. The use of renewable or waste fuels allows something that would otherwise be wasted to contribute to our economy. Fossil fuels that are displaced can be redirected to another use or consumed for future benefit. By integrating a gas turbine generator with a. process plant, the natural gas required for producing electricity can be reduced by 40% below that required for a combined cycle. The heat rejected from a gas turbine, combined cycle, or steam plant can be redirected to a process use that contributes to our economy by producing something of value to world markets. By contrast a conventional power plant is paid for by the rate payers and consumes Texas natural resources and therefore is a burden rather than an enhancement to our economy. The optimal location of facilities are possible only if there is an adequate transmission system. Utility, consumer and industry must cooperate to improve our transmission system for the benefit of all Texas. The Texas Public Utilities Commission has taken the lead in promoting efficiency by requiring transmission wheeling between qualifying facilities and electric utilities. Several cogeneration facilities have been constructed as a result. In order to encourage small power production, the rule needs to be expanded to include projects interconnected with distribution systems. Most renewable resource projects are relatively small and cannot afford the cost of a high voltage interconnect, and yet their characteristics match a baseload need. The ability to wheel power to a utility that needs base load power from a distribution level interconnection is essential to development of these smaller projects."

John, T.

1988-09-01T23:59:59.000Z

329

North Dakota's At-large congressional district: Energy Resources | Open  

Open Energy Info (EERE)

Dakota's At-large congressional district: Energy Resources Dakota's At-large congressional district: Energy Resources Jump to: navigation, search Equivalent URI DBpedia This article is a stub. You can help OpenEI by expanding it. This page represents a congressional district in North Dakota. Registered Energy Companies in North Dakota's At-large congressional district Alchem Ltd Blue Flint Ethanol Crownbutte Wind Power LLC DMI Industries EERC Center for Biomass Utilization EERC National Center for Hydrogen Technology Global Electric Motorcars Government of North Dakota M Power LLC Nor-son Construction Plains CO2 Reduction Partnership PCOR Tharaldson Ethanol LLC Wanzek Construction Wanzek Construction Inc Retrieved from "http://en.openei.org/w/index.php?title=North_Dakota%27s_At-large_congressional_district&oldid=196380"

330

Magma energy for power generation  

DOE Green Energy (OSTI)

Thermal energy contained in crustal magma bodies represents a large potential resource for the US and magma generated power could become a viable alternative in the future. Engineering feasibility of the magma energy concept is being investigated as part of the Department of Energy's Geothermal Program. This current project follows a seven-year Magma Energy Research Project where scientific feasibility of the concept was concluded.

Dunn, J.C.

1987-01-01T23:59:59.000Z

331

False data injection attacks against state estimation in electric power grids  

Science Conference Proceedings (OSTI)

A power grid is a complex system connecting electric power generators to consumers through power transmission and distribution networks across a large geographical area. System monitoring is necessary to ensure the reliable operation of power grids, ... Keywords: Power grids, attack, state estimation

Yao Liu; Peng Ning; Michael K. Reiter

2011-05-01T23:59:59.000Z

332

A survey on wind power ramp forecasting.  

DOE Green Energy (OSTI)

The increasing use of wind power as a source of electricity poses new challenges with regard to both power production and load balance in the electricity grid. This new source of energy is volatile and highly variable. The only way to integrate such power into the grid is to develop reliable and accurate wind power forecasting systems. Electricity generated from wind power can be highly variable at several different timescales: sub-hourly, hourly, daily, and seasonally. Wind energy, like other electricity sources, must be scheduled. Although wind power forecasting methods are used, the ability to predict wind plant output remains relatively low for short-term operation. Because instantaneous electrical generation and consumption must remain in balance to maintain grid stability, wind power's variability can present substantial challenges when large amounts of wind power are incorporated into a grid system. A critical issue is ramp events, which are sudden and large changes (increases or decreases) in wind power. This report presents an overview of current ramp definitions and state-of-the-art approaches in ramp event forecasting.

Ferreira, C.; Gama, J.; Matias, L.; Botterud, A.; Wang, J. (Decision and Information Sciences); (INESC Porto)

2011-02-23T23:59:59.000Z

333

Power conversion from environmentally scavenged energy sources.  

DOE Green Energy (OSTI)

As the power requirements for modern electronics continue to decrease, many devices which were once dependent on wired power are now being implemented as portable devices operating from self-contained power sources. The most prominent source of portable power is the electrochemical battery, which converts chemical energy into electricity. However, long lasting batteries require large amounts of space for chemical storage, and inevitably require replacement when the chemical reaction no longer takes place. There are many transducers and scavenging energy sources (SES) that are able to exploit their environment to generate low levels of electrical power over a long-term time period, including photovoltaic cells, thermoelectric generators, thermionic generators, and kinetic/piezoelectric power generators. This generated power is sustainable as long as specific environmental conditions exist and also does not require the large volume of a long lifetime battery. In addition to the required voltage generation, stable power conversion requires excess energy to be efficiently stored in an ultracapacitor or similar device and monitoring control algorithms to be implemented, while computer modeling and simulation can be used to complement experimental testing. However, building an efficient and stable power source scavenged from a varying input source is challenging.

Druxman, Lee Daniel

2007-09-01T23:59:59.000Z

334

Resonant Power Conditioning and Compact Pulse Power ...  

Science Conference Proceedings (OSTI)

... (FEEDBACK) HV RECTIFIER AND FILTER NETWORK ... Los Alamos High Frequency Polyphase Resonant Power Conditioning ... 30 KW Loss ...

2012-10-31T23:59:59.000Z

335

Power provisioning for a warehouse-sized computer  

Science Conference Proceedings (OSTI)

Large-scale Internet services require a computing infrastructure that can beappropriately described as a warehouse-sized computing system. The cost ofbuilding datacenter facilities capable of delivering a given power capacity tosuch a computer can rival ... Keywords: energy efficiency, power modeling, power provisioning

Xiaobo Fan; Wolf-Dietrich Weber; Luiz Andre Barroso

2007-06-01T23:59:59.000Z

336

A practical theory of micro-solar power sensor networks  

Science Conference Proceedings (OSTI)

Building a micro-solar power system is challenging because it must address long-term system behavior under highly variable solar energy and consider a large design space. We develop a practical theory of micro-solar power systems that is materialized ... Keywords: Micro-solar power system, deployment, modeling, simulation, validation

Jaein Jeong; David Culler

2012-11-01T23:59:59.000Z

337

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

338

Dynamic power management with hybrid power sources  

Science Conference Proceedings (OSTI)

DPM (Dynamic Power Management) is an effective technique for reducing the energy consumption of embedded systems that is based on migrating to a low power state when possible. While conventional DPM minimizes the energy consumption of the embedded system, ... Keywords: DPM, embedded system, fuel cell, hybrid power

Jianli Zhuo; Chaitali Chakrabarti; Kyungsoo Lee; Naehyuck Chang

2007-06-01T23:59:59.000Z

339

LIFE Power Plant Fusion Power Associates  

E-Print Network (OSTI)

LIFE Power Plant Fusion Power Associates December 14, 2011 Mike Dunne LLNL #12;NIf-1111-23714.ppt LIFE power plant 2 #12;LIFE delivery timescale NIf-1111-23714.ppt 3 #12;Timely delivery is enabled near-term, NIF based, NIC-derivative fusion performance § 3 allows small, thin Fresnel lenses ­ enables

340

Dynamic power management in environmentally powered systems  

Science Conference Proceedings (OSTI)

In this paper a framework for energy management in energy harvesting embedded systems is presented. As a possible example scenario, we focus on wireless sensor nodes which are powered by solar cells. We demonstrate that classical power management solutions ... Keywords: embedded systems, energy harvesting, model predictive control, power management, real-time scheduling, reward maximization

Clemens Moser; Jian-Jia Chen; Lothar Thiele

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "large power time-of-day" 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

TAPO: Thermal-aware power optimization techniques for servers and data centers  

Science Conference Proceedings (OSTI)

A large portion of the power consumption of data centers can be attributed to cooling. In dynamic thermal management mechanisms for data centers and servers, thermal setpoints are typically chosen statically and conservatively, which leaves significant ... Keywords: power leakage power, TAPO, thermal aware power optimization techniques, data centers, server centers, power consumption, dynamic thermal management mechanisms, thermal setpoints, power budget, heating ventilation and air conditioning, HVAC, circuit leakage power

Wei Huang; M. Allen-Ware; J. B. Carter; E. Elnozahy; H. Hamann; T. Keller; C. Lefurgy; Jian Li; K. Rajamani; J. Rubio

2011-07-01T23:59:59.000Z

342

The Association of Large-Scale Climate Variability and Teleconnections on Wind Energy Resource over Europe and its Intermittency  

E-Print Network (OSTI)

In times of increasing importance of wind power in the worlds energy mix, this study focuses on a better understanding of the influences of large-scale climate variability on wind power resource over Europe. The impact ...

Kriesche, Pascal

343

Power and energy  

Science Conference Proceedings (OSTI)

The author examines the development of nuclear power throughout the world, commencing with proposals for California, USA. Evidence that nuclear power remains viable in Asia include Japan Atomic Power Co.'s announcement of plans for a 1300 MW reactor ...

G. Zorpette

1995-01-01T23:59:59.000Z

344

Solar powered desalination system  

E-Print Network (OSTI)

photon capture area and electrical power consumption. Bothcapture area (m 2 ) Electrical power consumption (kWh/kg HType 2 Type 3 Type 4 Electrical power consumption for these

Mateo, Tiffany Alisa

2011-01-01T23:59:59.000Z

345

PowerPoint Presentation  

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

power module - High temperature operation - Size reduction - 3-kW 120V single-phase inverter (250 C+) Input Power Output Power > 90% efficiency (estimated) Phase I: Very High...

346

Powerful Partnership | Y-12 National Security Complex  

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

Powerful Partnership Powerful Partnership Powerful Partnership Posted: February 7, 2013 - 6:58pm | Y-12 Report | Volume 9, Issue 2 | 2013 Y-12 processes the feedstock to power the nation's submarines and aircraft carriers. These vessels can travel the world for years without refueling. When the U.S. Navy's Capt. Hyman Rickover and a small group of naval officers began to study nuclear power in 1946, Oak Ridge, Tenn., was the go-to place. This large, bustling but undisclosed city, born just four years earlier, was credited with developing the highly enriched uranium for the world's first atomic bomb. It held the secret knowledge that set Rickover on course to cultivate the thought of using nuclear reactors to power submarines. His curiosity more than 65 years ago initiated the Navy's

347

Princeton Plasma Physics Lab - AC power  

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

ac-power The electricity that runs the ac-power The electricity that runs the Laboratory's experiments and facilities. "AC" stands for the alternating current that comes from large power stations. The term compares with "DC," for "direct current," which comes from sources like batteries. en Offshore Wind and Vehicle to Grid Power http://www.pppl.gov/events/offshore-wind-and-vehicle-grid-power

Professor Willett Kempton, of the University of Delaware, presents "Offshore Wind and Vehicle to Grid Power" as part of the Andlinger Center's 2013-2014 Highlight Seminar Series.

348

A Power Benchmarking Framework for Network Devices  

E-Print Network (OSTI)

Abstract. Energy efficiency is becoming increasingly important in the operation of networking infrastructure, especially in enterprise and data center networks. Researchers have proposed several strategies for energy management of networking devices. However, we need a comprehensive characterization of power consumption by a variety of switches and routers to accurately quantify the savings from the various power savings schemes. In this paper, we first describe the hurdles in network power instrumentation and present a power measurement study of a variety of networking gear such as hubs, edge switches, core switches, routers and wireless access points in both stand-alone mode and a production data center. We build and describe a benchmarking suite that will allow users to measure and compare the power consumed for a large set of common configurations at any switch or router of their choice. We also propose a network energy proportionality index, which is an easily measurable metric, to compare power consumption behaviors of multiple devices.

Priya Mahadevan; Puneet Sharma; Sujata Banerjee

2009-01-01T23:59:59.000Z

349

Spontaneous synchrony in power-grid networks  

E-Print Network (OSTI)

An imperative condition for the functioning of a power-grid network is that its power generators remain synchronized. Disturbances can prompt desynchronization, which is a process that has been involved in large power outages. Here we derive a condition under which the desired synchronous state of a power grid is stable, and use this condition to identify tunable parameters of the generators that are determinants of spontaneous synchronization. Our analysis gives rise to an approach to specify parameter assignments that can enhance synchronization of any given network, which we demonstrate for a selection of both test systems and real power grids. Because our results concern spontaneous synchronization, they are relevant both for reducing dependence on conventional control devices, thus offering an additional layer of protection given that most power outages involve equipment or operational errors, and for contributing to the development of "smart grids" that can recover from failures in real time.

Motter, Adilson E; Anghel, Marian; Nishikawa, Takashi

2013-01-01T23:59:59.000Z

350

AN UPDATE ON NIF PULSED POWER  

SciTech Connect

The National Ignition Facility (NIF) is a 192-beam laser fusion driver operating at Lawrence Livermore National Laboratory. NIF relies on three large-scale pulsed power systems to achieve its goals: the Power Conditioning Unit (PCU), which provides flashlamp excitation for the laser's injection system; the Power Conditioning System (PCS), which provides the multi-megajoule pulsed excitation required to drive flashlamps in the laser's optical amplifiers; and the Plasma Electrode Pockels Cell (PEPC), which enables NIF to take advantage of a fourpass main amplifier. Years of production, installation, and commissioning of the three NIF pulsed power systems are now complete. Seven-day-per-week operation of the laser has commenced, with the three pulsed power systems providing routine support of laser operations. We present the details of the status and operational experience associated with the three systems along with a projection of the future for NIF pulsed power.

Arnold, P A; James, G F; Petersen, D E; Pendleton, D L; McHale, G B; Barbosa, F; Runtal, A S; Stratton, P L

2009-06-22T23:59:59.000Z

351

Green Power Network: Green Power Markets Overview  

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

Green Markets Green Markets Search Search Help More Search Options Search Site Map News TVA Seeks 126 MW of Renewables in 2014 December 2013 More News More News Subscribe to E-Mail Update Subscribe to e-mail update Events EPA Webinar - The Power of Aggregated Purchasing: How to Green Your Electricity Supply & Save Money January 15, 2014 1:00-2:00 p.m. ET Previous Webinars More News Features Green Power Market Status Report (2011 Data) Featured Green Power Reports Green Pricing Green Power Marketing Green Certificates Carbon Offsets State Policies Overview The essence of green power marketing is to provide market-based choices for electricity consumers to purchase power from environmentally preferred sources. The term "green power" is used to define power generated from renewable energy sources, such as wind and solar power, geothermal, hydropower and various forms of biomass. Green power marketing has the potential to expand domestic markets for renewable energy technologies by fostering greater availability of renewable electric service options in retail markets. Although renewable energy development has traditionally been limited by cost considerations, customer choice allows consumer preferences for cleaner energy sources to be reflected in market transactions. In survey after survey, customers have expressed a preference and willingness to pay more, if necessary, for cleaner energy sources. You can find more information about purchase options on our "Buying Green Power" page.

352

PowerPoint Presentation  

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

302011 Essential PV power plant features Reliable power conversion Extensive service network Remote monitoring & diagnostics Plant level control Advanced grid-friendly features...

353

Siemens Power Generation, Inc.  

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

Presented at the 2005 Pittsburgh Coal Conference Siemens Power Generation, Inc. Page 1 of 10 Siemens Power Generation, Inc., All Rights Reserved Development of a Catalytic...

354

Laser Radiometry: Powering Up  

Science Conference Proceedings (OSTI)

... Radiometry: Powering Up. June 11, 2012. ... Contact: Marla Dowell 303-497- 7455. Chris Cromer examines one of PML's next-generation power meters ...

2012-06-14T23:59:59.000Z

355

Sunrise II Power Plant  

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

Sunrise Power Company, LLC (Sunrise), has planned the modification of an existing power plant project to increase its generation capacity by 265 megawatts by 2003. The initial...

356

Southwestern Power Administration  

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

FOIAPrivacy Act Submit a FOIA Request DOE FOIA Requester Service Center Electronic Reading Room FOIA Links Power Marketing Administrations' FOIA Links Bonneville Power...

357

Electrolytes for power sources  

DOE Patents (OSTI)

Electrolytes for power sources, particularly alkaline and acidic power sources, comprising benzene polysulfonic acids and benzene polyphosphonic acids or salts of such acids.

Doddapaneni, Narayan (Albuquerque, NM); Ingersoll, David (Albuquerque, NM)

1995-01-01T23:59:59.000Z

358

Electrolytes for power sources  

DOE Patents (OSTI)

Electrolytes are disclosed for power sources, particularly alkaline and acidic power sources, comprising benzene polysulfonic acids and benzene polyphosphonic acids or salts of such acids. 7 figures.

Doddapaneni, N.; Ingersoll, D.

1995-01-03T23:59:59.000Z

359

Radioisotope Power Generation  

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

Radioisotope Power Generation Long lived power sources are needed for equipment that is too remote or inaccessible for replacement. By choosing a radioactive element with a long...

360

Electric Power Monthly  

U.S. Energy Information Administration (EIA)

Net Generation by Energy Source: Commercial Combined Heat and Power Sector . Table 1.5. Net Generation by Energy Source: Industrial Combined Heat and Power Sector .

Note: This page contains sample records for the topic "large power time-of-day" 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

Nuclear Fusion Power  

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

Power Nuclear fusion reactors, if they can be made to work, promise virtually unlimited power for the indefinite future. This is because the fuel, isotopes of hydrogen, are...

362

PowerPoint Presentation  

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

CT (USA), international presence in USA, Canada, Germany (Fraunhofer, IKTS) and South Korea (Posco) Delivering Direct FuelCell (DFC ) power plants for On-Site Power and...

363

Scalable computation of streamlines on very large datasets  

Science Conference Proceedings (OSTI)

Understanding vector fields resulting from large scientific simulations is an important and often difficult task. Streamlines, curves that are tangential to a vector field at each point, are a powerful visualization method in this context. Application ... Keywords: flow, parallel, scaling, streamlines, visualization

Dave Pugmire; Hank Childs; Christoph Garth; Sean Ahern; Gunther H. Weber

2009-11-01T23:59:59.000Z

364

Design and Specification Guidelines for Large Draft Fans and Systems  

Science Conference Proceedings (OSTI)

Design shortcomings in draft fans and related air-gas systems can cause fan failure and costly outages of large fossil fuel power plants. These guidelines will help engineers and manufacturers achieve a better understanding of the design features needed to minimize such failures.

1983-12-01T23:59:59.000Z

365

Survivable pulse power space radiator  

DOE Patents (OSTI)

A thermal radiator system is described for use on an outer space vehicle, which must survive a long period of nonuse and then radiate large amounts of heat for a limited period of time. The radiator includes groups of radiator panels that are pivotally connected in tandem, so that they can be moved to deployed configuration wherein the panels lie largely coplanar, and to a stowed configuration wherein the panels lie in a stack to resist micrometerorite damage. The panels are mounted on a boom which separates a hot power source from a payload. While the panels are stowed, warm fluid passes through their arteries to keep them warm enough to maintain the coolant in a liquid state and avoid embrittlement of material. The panels can be stored in a largely cylindrical shell, with panels progressively further from the boom being of progressively shorter length. 5 figs.

Mims, J.; Buden, D.; Williams, K.

1988-03-11T23:59:59.000Z

366

Energy Storage & Power Electronics 2008 Peer Review - Power Electronic...  

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

& Power Electronics 2008 Peer Review - Power Electronics (PE) Systems Presentations Energy Storage & Power Electronics 2008 Peer Review - Power Electronics (PE) Systems...

367

Karnataka Power Corporation Limited and National Thermal Power...  

Open Energy Info (EERE)

Karnataka Power Corporation Limited and National Thermal Power Corporation JV Jump to: navigation, search Name Karnataka Power Corporation Limited and National Thermal Power...

368

Water-Power Development, Conservation of Hydroelectric Power...  

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

Water-Power Development, Conservation of Hydroelectric Power Dams and Works (Virginia) Water-Power Development, Conservation of Hydroelectric Power Dams and Works (Virginia)...

369

Flex power perspectives of indirect power system control through...  

Open Energy Info (EERE)

power perspectives of indirect power system control through dynamic power price (Smart Grid Project) Jump to: navigation, search Project Name Flex power perspectives of indirect...

370

Economic Comparison of HVAC and HVDCSolutions for Large Offshore Wind Farms underSpecial Consideration of Reliability.  

E-Print Network (OSTI)

?? An economic comparison of several HVAC-HVDC transmission systems from large offshore windfarms is presented. The power output from the offshore windfarm is modeled by (more)

Lazaridis, Lazaros

2005-01-01T23:59:59.000Z

371

SunShot Initiative: Concentrating Solar Power Staff  

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

Concentrating Solar Power Staff Concentrating Solar Power Staff to someone by E-mail Share SunShot Initiative: Concentrating Solar Power Staff on Facebook Tweet about SunShot Initiative: Concentrating Solar Power Staff on Twitter Bookmark SunShot Initiative: Concentrating Solar Power Staff on Google Bookmark SunShot Initiative: Concentrating Solar Power Staff on Delicious Rank SunShot Initiative: Concentrating Solar Power Staff on Digg Find More places to share SunShot Initiative: Concentrating Solar Power Staff on AddThis.com... Accomplishments Visiting the SunShot Office Fellowships Postdoctoral Research Contacts Staff Concentrating Solar Power Staff The SunShot Initiative concentrating solar power (CSP) program competitively funds and actively manages the efforts of industry, national laboratories, and universities working to make large-scale dispatchable

372

Military power requirements and backup power considerations  

Science Conference Proceedings (OSTI)

All US Air Force (USAF) facilities have certain critical power requirements that must be met in order to carry out their mission successfully. Internal USAF studies have shown that the mission can degrade precipitously as the available power decreases below the mission critical level. Now, more than ever before, the military and private industry are finding that certain functions, such as automated data processing and automated process control, respond catastrophically to power reductions. Furthermore, increased reliance on electrical power means, in the case of the Air Force, that critical power requirements are anticipated to increase by half over the next 15 yr. For these reasons and others, the USAF is investigating several means of improving the availability of electric power under adverse conditions above that which can be provided by an off-base supplier. Among the approaches to this problem being pursued at this time are a program to improve all sorts of generator sets on a service-wide basis and the Multimegawatt Terrestrial Power (MTP) Program, which is pursuing the design and testing of a small dedicated nuclear power source to provide critical mission power. The purpose of this paper is to provide some insight into some of the issues associated with USAF power programs.

Botts, T.E.

1986-01-01T23:59:59.000Z

373

Bonneville Power Administration 1991 Annual Report.  

SciTech Connect

Congress enacted the Bonneville Project Act in 1937, creating the Bonneville Power Administration to market and transmit the power produced by Bonneville Dam on the Columbia River. Since then, Congress has directed BPA to sell at wholesale the power produced at a total of 30 Federal dams in the Pacific Northwest, and to acquire conservation and generating resources sufficient to meet the needs of BPA`s customer utilities. The dams and the electrical system are known as the Federal Columbia River Power System. Bonneville sells wholesale power to public and private utilities, rural cooperatives, large industries, and Federal agencies. BPA also sells or exchanges power with utilities in California. BPA uses revenues from the sale of power and transmission services to recover its own expenses, to repay the Federal investment in the power system, and to pay for the resources it has acquired. BPA pays for operation and maintenance expenses at the Federal dams and at non-Federal power plants. It also pays for irrigation benefits of Federal projects allocated to power to repay, and for fish and wildlife projects which offset damage to these resources by the Federal hydropower system. This document is the 1991 statement of budget, financial statement, cash flows, capitalization, expenses, and projects. An organization chart is included.

United States. Bonneville Power Administration.

1992-01-01T23:59:59.000Z

374

Alpena Power Co | Open Energy Information  

Open Energy Info (EERE)

Power Co Power Co Jump to: navigation, search Name Alpena Power Co Place Michigan Utility Id 392 Utility Location Yes Ownership I NERC Location RFC NERC RFC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] Energy Information Administration Form 826[2] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Alternative Energy Manufacturing Industrial Experimental Primary Distribution Service Industrial General Service Commercial General Service (Distribution Only) Commercial Large Industrial Service (13,200 Volts or Lower) Industrial Large Industrial Service (13,800 Volts) Industrial Large Industrial Service (34,500 Volts) Industrial

375

Large-Scale Hydropower Basics | Department of Energy  

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

Large-Scale Hydropower Basics Large-Scale Hydropower Basics Large-Scale Hydropower Basics August 14, 2013 - 3:11pm Addthis Large-scale hydropower plants are generally developed to produce electricity for government or electric utility projects. These plants are more than 30 megawatts (MW) in size, and there is more than 80,000 MW of installed generation capacity in the United States today. Most large-scale hydropower projects use a dam and a reservoir to retain water from a river. When the stored water is released, it passes through and rotates turbines, which spin generators to produce electricity. Water stored in a reservoir can be accessed quickly for use during times when the demand for electricity is high. Dammed hydropower projects can also be built as power storage facilities.

376

Large-Scale Hydropower Basics | Department of Energy  

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

Large-Scale Hydropower Basics Large-Scale Hydropower Basics Large-Scale Hydropower Basics August 14, 2013 - 3:11pm Addthis Large-scale hydropower plants are generally developed to produce electricity for government or electric utility projects. These plants are more than 30 megawatts (MW) in size, and there is more than 80,000 MW of installed generation capacity in the United States today. Most large-scale hydropower projects use a dam and a reservoir to retain water from a river. When the stored water is released, it passes through and rotates turbines, which spin generators to produce electricity. Water stored in a reservoir can be accessed quickly for use during times when the demand for electricity is high. Dammed hydropower projects can also be built as power storage facilities.

377

Protecting Intelligent Distributed Power Grids Against Cyber Attacks - May  

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

Protecting Intelligent Distributed Power Grids Against Cyber Protecting Intelligent Distributed Power Grids Against Cyber Attacks - May 2008 Protecting Intelligent Distributed Power Grids Against Cyber Attacks - May 2008 Development of a novel distributed and hierarchical security layer specific to intelligent grid design will help protect intelligent distributed power grids from cyber attacks. Intelligent power grids are interdependent energy management systems-encompassing generation, distribution, IT networks, and control systems-that use automated data analysis and demand response capabilities to increase system functionality, efficiency, and reliability. But increased interconnection and automation over a large geographical area requires a distributed and hierarchical approach to cybersecurity. Protecting Intelligent Distributed Power Grids Again Cyber Attacks.pdf

378

Superconducting Power Equipment  

Science Conference Proceedings (OSTI)

The 2010 Electric Power Research Institute (EPRI) Technology Watch (Techwatch) report on superconducting power applications (EPRI report 1019995, Superconducting Power Equipment: Technology Watch 2010) introduced coverage about superconducting magnetic energy storage systems and superconducting transformers. The 2011 report contains additional information about superconducting power equipment, including progress to demonstrations in some projects. The 2011 report also includes a section on superconductin...

2011-12-22T23:59:59.000Z

379

Power Purchase Agreements  

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

Presentation covers the power purchase agreements taken from the FEMP Alternative Finance Options (AFO) webinar.

380

Transportation and Stationary Power  

E-Print Network (OSTI)

heat, hydrogen and power (CHHP) "trigeneration" systems can hypothetically be configured to provide (1

Note: This page contains sample records for the topic "large power time-of-day" 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

Superconducting Power Equipment: Technology Watch 2012  

Science Conference Proceedings (OSTI)

The demand to transport large quantities of renewable energy from wind, solar, or hydro projects in remote locations to population load centers is increasing worldwide. Improved efficiency and greater power capacity that superconducting cables provide in this application continue to attract interest. In the United States, the Tres Amigas interconnect project, which reportedly will eventually use dc superconductors, is, in part, motivated by the need to transport wind power from west to east. ...

2012-12-20T23:59:59.000Z

382

Preventing, Controlling and Mitigating Power System Separation  

Science Conference Proceedings (OSTI)

Large power system blackouts, although infrequent, may affect up to tens of millions of people and result in huge costs. A blackout is the result of a sequence of disturbances including initial events, consequent protective actions or additional failures, related vulnerability conditions, and accelerated cascading outages leading to the final blackout. Those disturbances may gradually weaken a power system's connections and result in growing angular oscillations between inter-connected control areas. If ...

2010-12-01T23:59:59.000Z

383

A novel power block for CSP systems  

SciTech Connect

Concentrating Solar Thermal Power (CSP) and in particular parabolic trough, is a proven large-scale solar power technology. However, CSP cost is not yet competitive with conventional alternatives unless subsidized. Current CSP plants typically include a condensing steam cycle power block which was preferably designed for a continuous operation and higher operating conditions and therefore, limits the overall plant cost effectiveness and deployment. The drawbacks of this power block are as follows: (i) no power generation during low insolation periods (ii) expensive, large condenser (typically water cooled) due to the poor extracted steam properties (high specific volume, sub-atmospheric pressure) and (iii) high installation and operation costs. In the current study, a different power block scheme is proposed to eliminate these obstacles. This power block includes a top Rankine cycle with a back pressure steam turbine and a bottoming Kalina cycle comprising another back pressure turbine and using ammonia-water mixture as a working fluid. The bottoming (moderate temperature) cycle allows power production during low insolation periods. Because of the superior ammonia-water vapor properties, the condensing system requirements are much less demanding and the operation costs are lowered. Accordingly, air cooled condensers can be used with lower economical penalty. Another advantage is that back pressure steam turbines have a less complex design than condensing steam turbines which make their costs lower. All of these improvements could make the combined cycle unit more cost effective. This unit can be applicable in both parabolic trough and central receiver (solar tower) plants. The potential advantage of the new power block is illustrated by a detailed techno-economical analysis of two 50 MW parabolic trough power plants, comparing between the standard and the novel power block. The results indicate that the proposed plant suggests a 4-11% electricity cost saving. (author)

Mittelman, Gur [ASP Ltd., Advanced Solar Power, Industrial Zone, Be'er Tuviyya (Israel); Epstein, Michael [Solar Research Facilities Unit, Weizmann Institute of Science (Israel)

2010-10-15T23:59:59.000Z

384

Green Power Network: Green Power Leadership Awards  

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

Awards will highlight the accomplishments of green power suppliers (utilities, retail suppliers, REC marketers, and renewable energy project developers) that are innovators and...

385

Large Consistent Geometric Landmark Maps  

Science Conference Proceedings (OSTI)

The autonomous operation of an intelligent service robot in practical applications requires that the robot builds up a map of the environment by itself, even for large environments like supermarkets. This paper presents a solution to the problem of building ...

Wolfgang D. Rencken; Wendelin Feiten; Martin Soika

2000-10-01T23:59:59.000Z

386

Lightning Safety and Large Stadiums  

Science Conference Proceedings (OSTI)

When lightning threatens an outdoor activity, it is usually postponed so that people may seek a safe location. When lightning threatens a large outdoor stadium, the game or event itself is usually postponed, but it is often difficult to ensure ...

Joel Gratz; Erik Noble

2006-09-01T23:59:59.000Z

387

Economic and Performance Benefits Resulting From the Use of Large Diameter  

Open Energy Info (EERE)

and Performance Benefits Resulting From the Use of Large Diameter and Performance Benefits Resulting From the Use of Large Diameter Fans on Air Cooled Heat Exchangers (A Case Study in the Use of Large Fan Air Cooled Condensers at the Neal Hot Springs Geothermal Power Plant, Oregon) Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Economic and Performance Benefits Resulting From the Use of Large Diameter Fans on Air Cooled Heat Exchangers (A Case Study in the Use of Large Fan Air Cooled Condensers at the Neal Hot Springs Geothermal Power Plant, Oregon) Abstract A significant improvement in air cooler technology was implementedat the Neal Hot Springs geothermal power plant in Vale,Oregon. Large cooling tower fans were used in an induced draftarrangement (fans above the heat exchanger). The total numberof fans was reduced from 270 x 12ft / 3.7m fans

388

Frontier Power Company | Open Energy Information  

Open Energy Info (EERE)

Power Company Power Company Place Ohio Utility Id 6804 Utility Location Yes Ownership C NERC Location RFC NERC RFC Yes RTO PJM Yes Activity Transmission Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Commercial And Industrial Lighting And Power Service Commercial Large Power Service Residential Sales,Residential Sales Seasonal And Public Building Service Residential Average Rates Residential: $0.1160/kWh Commercial: $0.1180/kWh References ↑ "EIA Form EIA-861 Final Data File for 2010 - File1_a" Retrieved from "http://en.openei.org/w/index.php?title=Frontier_Power_Company&oldid=410728"

389

New England Wind Forum: Wind Power Technology  

Wind Powering America (EERE)

Wind Power Technology Wind Power Technology Modern wind turbines have become sophisticated power plants while the concept of converting wind energy to electrical energy remains quite simple. Follow these links to learn more about the science behind wind turbine technology. Wind Power Animation An image of a scene from the wind power animation. The animation shows how moving air rotates a wind turbine's blades and describes how the internal components work to produce electricity. It shows small and large wind turbines and the differences between how they are used, as stand alone or connected to the utility grid. How Wind Turbines Work Learn how wind turbines make electricity; what are the types, sizes, and applications of wind turbines; and see an illustration of the components inside a wind turbine.

390

Global implications of standby power use  

SciTech Connect

Separate studies indicate that standby power is responsible for 20-60 W per home in developed countries. Standby power is responsible for about 2% of OECD countries total electricity consumption and the related power generation generates almost 1% of their carbon emissions. Replacement of existing appliances with those appliances having the lowest standby would reduce total standby power consumption by over 70%. The resulting reductions in carbon emissions would meet over 3% of OECD's total Kyoto commitments. Other strategies may cut more carbon emissions, but standby power is unique in that the reductions are best accomplished through international collaboration and whose costs and large benefits would be spread over all countries.

Lebot, Benoit; Meier, Alan; Anglade, Alain

2000-05-01T23:59:59.000Z

391

High power fast ramping power supplies  

Science Conference Proceedings (OSTI)

Hundred megawatt level fast ramping power converters to drive proton and heavy ion machines are under research and development at accelerator facilities in the world. This is a leading edge technology. There are several topologies to achieve this power level. Their advantages and related issues will be discussed.

Marneris,I.; Bajon, E.; Bonati, R.; Sandberg, J.; Roser, T.; Tsoupas, N.

2009-05-04T23:59:59.000Z

392

Active Power Control from Wind Power (Presentation)  

DOE Green Energy (OSTI)

In order to keep the electricity grid stable and the lights on, the power system relies on certain responses from its generating fleet. This presentation evaluates the potential for wind turbines and wind power plants to provide these services and assist the grid during critical times.

Ela, E.; Brooks, D.

2011-04-01T23:59:59.000Z

393

Green Power Network: Green Power Policies  

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

Green Power Marketing Green Certificates Carbon Offsets State Policies govern_purch Community Choice Aggregation Disclosure Policies Green Power Policies Net Metering Policies Green Power Policies A number of state and local governments have policies in place that encourage the development of green power markets. Government green power purchasing mandates or goals have been established by the federal government, as well as state and local governments to procure renewable energy for the electricity used by government facilities or operations. Community choice aggregation allows communities to determine their electricity generation sources by aggregating the community load and purchasing electricity from an alternate electricity supplier while still receiving transmission and distribution service from their existing provider.

394

Large orders in strong-field QED  

E-Print Network (OSTI)

We address the issue of large-order expansions in strong-field QED. Our approach is based on the one-loop effective action encoded in the associated photon polarisation tensor. We concentrate on the simple case of crossed fields aiming at possible applications of high-power lasers to measure vacuum birefringence. A simple next-to-leading order derivative expansion reveals that the indices of refraction increase with frequency. This signals normal dispersion in the small-frequency regime where the derivative expansion makes sense. To gain information beyond that regime we determine the factorial growth of the derivative expansion coefficients evaluating the first 80 orders by means of computer algebra. From this we can infer a nonperturbative imaginary part for the indices of refraction indicating absorption (pair production) as soon as energy and intensity become (super)critical. These results compare favourably with an analytic evaluation of the polarisation tensor asymptotics. Kramers-Kronig relations finally allow for a nonperturbative definition of the real parts as well and show that absorption goes hand in hand with anomalous dispersion for sufficiently large frequencies and fields.

Thomas Heinzl; Oliver Schroeder

2006-05-12T23:59:59.000Z

395

Mecklenburg Electric Coop, Inc | Open Energy Information  

Open Energy Info (EERE)

Virginia Virginia Utility Id 12260 Utility Location Yes Ownership C NERC Location SERC NERC SERC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png SCHEDULE INT-SEA-U SEASONAL INTERRUPTIBLE SERVICE Industrial SCHEDULE INT-U YEAR ROUND INTERRUPTIBLE SERVICE Industrial SCHEDULE LGS-TOD-U LARGE GENERAL TIME-OF-DAY SERVICE Industrial SCHEDULE LGS-U LARGE GENERAL SERVICE Industrial SCHEDULE LP-2-U-CA LARGE POWER SERVICE- CUSTOMER ACCESS Industrial SCHEDULE MGS-TOD-U MEDIUM GENERAL TIME-OF-DAY SERVICE Multi-Phase Industrial SCHEDULE MGS-TOD-U MEDIUM GENERAL TIME-OF-DAY SERVICE Single Phase

396

Innovative Approaches to Large Component Packaging  

Science Conference Proceedings (OSTI)

Radioactive waste disposal often times requires creative approaches in packaging design, especially for large components. Innovative design techniques are required to meet the needs for handling, transporting, and disposing of these large packages. Large components (i.e., Reactor Pressure Vessel (RPV) heads and even RPVs themselves) require special packaging for shielding and contamination control, as well as for transport and disposal. WMG Inc designed and used standard packaging for RPV heads without control rod drive mechanisms (CRDMs) attached for five RPV heads and has also more recently met an even bigger challenge and developed the innovative Intact Vessel Head Transport System (IVHTS) for RPV heads with CRDMs intact. This packaging system has been given a manufacturer's exemption by the United States Department of Transportation (USDOT) for packaging RPV heads. The IVHTS packaging has now been successfully used at two commercial nuclear power plants. Another example of innovative packaging is the large component packaging that WMG designed, fabricated, and utilized at the West Valley Demonstration Project (WVDP). In 2002, West Valley's high-level waste vitrification process was shut down in preparation for D and D of the West Valley Vitrification Facility. Three of the major components of concern within the Vitrification Facility were the Melter, the Concentrate Feed Makeup Tank (CFMT), and the Melter Feed Holdup Tank (MFHT). The removal, packaging, and disposition of these three components presented significant radiological and handling challenges for the project. WMG designed, fabricated, and installed special packaging for the transport and disposal of each of these three components, which eliminated an otherwise time intensive and costly segmentation process that WVDP was considering. Finally, WMG has also designed and fabricated special packaging for both the Connecticut Yankee (CY) and San Onofre Nuclear Generating Station (SONGS) RPVs. This paper presents the approach that has been successfully used for planning, implementing, and preparing for the disposition of large components such as those mentioned previously. It addresses the major regulatory and design requirements for packaging, transporting, and disposing of these components. The specific topics that are covered include radiological characterization, shielding, packaging design, on-site handling and movement, off-site transportation options, a brief discussion on disposition, and lessons learned. (authors)

Freitag, A.; Hooper, M.; Posivak, E.; Sullivan, J. [WMG, Inc., Peekskill, NY 10566 (United States)

2006-07-01T23:59:59.000Z

397

The large scale clustering of radio sources  

E-Print Network (OSTI)

The observed two-point angular correlation function, w(theta), of mJy radio sources exhibits the puzzling feature of a power-law behaviour up to very large (almost 10 degrees) angular scales which cannot be accounted for in the standard hierarchical clustering scenario for any realistic redshift distribution of such sources. After having discarded the possibility that the signal can be explained by a high density local source population, we find no alternatives to assuming that - at variance with all the other extragalactic populations studied so far, and in particular with optically selected quasars - radio sources responsible for the large-scale clustering signal were increasingly less clustered with increasing look-back time, up to at least z=1. The data are accurately accounted for in terms of a bias function which decreases with increasing redshift, mirroring the evolution with cosmic time of the characteristic halo mass, M_{star}, entering the non linear regime. In the framework of the `concordance cosmology', the effective halo mass controlling the bias parameter is found to decrease from about 10^{15} M_{sun}/h at z=0 to the value appropriate for optically selected quasars, 10^{13} M_{sun}/h, at z=1.5. This suggests that, in the redshift range probed by the data, the clustering evolution of radio sources is ruled by the growth of large-scale structure, and that they are associated with the densest environments virializing at any cosmic epoch. The data provide only loose constraints on radio source clustering at z>1 so we cannot rule out the possibility that at these redshifts the clustering evolution of radio sources enters a different regime, perhaps similar to that found for optically selected quasars. The dependence of w(theta) on cosmological parameters is also discussed.

M. Negrello; M. Magliocchetti; G. De Zotti

2006-02-13T23:59:59.000Z

398

A New Technique for Troubleshooting Large Capacitive Energy Storage Banks  

DOE Green Energy (OSTI)

The Power Conditioning System (PCS) of the National Ignition Facility (NIF) like many pulse power systems relies on large numbers of inductively isolated high voltage capacitors configured in parallel for energy storage. When an energy storage capacitor fails in such a capacitor bank, there is often little or no external indication showing which capacitor failed. Identifying the failed component can be a time consuming and potentially hazardous operation. Conventional methods using capacitance meters require that each capacitor be disconnected and tested independently. They have developed a new non-invasive technique (i.e. no dismantling of the bank is required) that greatly improves personnel safety as well reducing troubleshooting time.

Fulkerson, S E; Hammon, J

2001-06-05T23:59:59.000Z

399

PowerPoint Presentation  

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

Application of Large Application of Large - - Scale Scale Energy Storage Systems Energy Storage Systems in AEP in AEP Ali Nourai Distributed Energy Resources American Electric...

400

Solar powered desalination system  

E-Print Network (OSTI)

in the condenser of a large commercial steam turbine is keptin the condenser of a large commercial steam turbine is kept

Mateo, Tiffany Alisa

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "large power time-of-day" 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

ALARA at nuclear power plants  

SciTech Connect

Implementation of the As Low As Reasonably Achievable (ALARA) principle at nuclear power plants presents a continuing challenge for health physicists at utility corporate and plant levels, for plant designers, and for regulatory agencies. The relatively large collective doses at some plants are being addressed though a variety of dose reduction techniques. It is planned that this report will include material on historical aspects, management, valuation of dose reduction, quantitative and qualitative aspects of optimization, design, operational considerations, and training. The status of this work is summarized in this report. 30 refs., 1 fig., 6 tabs.

Baum, J.W.

1990-01-01T23:59:59.000Z

402

Large 718 Forgings for Land Based Turbines  

Science Conference Proceedings (OSTI)

Since the development of the first gas turbine, the drive for lower cost electrical power has lead to more efficient land based power systems. Increased efficiency ...

403

Potential Climatic Impacts and Reliability of Very Large-Scale Wind Farms  

E-Print Network (OSTI)

Meeting future world energy needs while addressing climate change requires large-scale deployment of low or zero greenhouse gas (GHG) emission technologies such as wind energy. The widespread availability of wind power has ...

Wang, Chien

404

Sensitivity Study of Regional Climate Model Simulations to Large-Scale Nudging Parameters  

Science Conference Proceedings (OSTI)

Previous studies with nested regional climate models (RCMs) have shown that large-scale spectral nudging (SN) seems to be a powerful method to correct RCMs weaknesses such as internal variability, intermittent divergence in phase space (IDPS), ...

Adelina Alexandru; Ramon de Elia; Ren Laprise; Leo Separovic; Sbastien Biner

2009-05-01T23:59:59.000Z

405

A Method to Determine Reserve Requirements for Large-Scale Renewable Integration: A Platform for Large-Scale Power Systems  

Science Conference Proceedings (OSTI)

The main industry issue addressed in this report is the increasing penetration of intermittent generation. The system adaptation for forecasting errors associated with these types of generation is to increase reserve requirements, and the adaptation for their ramping characteristics is to diversify the portfolio of complementary dispatch resources. For small quantities of intermittent generation, there is no noticeable system impact8212but at some point their forecasting errors and ramping begin to affec...

2009-12-18T23:59:59.000Z

406

Large Industrial Renewable Energy Purchase Program (New Brunswick) |  

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

Large Industrial Renewable Energy Purchase Program (New Brunswick) Large Industrial Renewable Energy Purchase Program (New Brunswick) Large Industrial Renewable Energy Purchase Program (New Brunswick) < Back Eligibility Agricultural Commercial Developer Industrial Investor-Owned Utility Local Government Municipal/Public Utility Rural Electric Cooperative Tribal Government Utility Savings Category Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State New Jersey Program Type Performance-Based Incentive Provider New Brunswick Energy and Mines Beginning January 1, 2012 the Large Industrial Renewable Energy Purchase Program allows NB Power to purchase renewable energy generated by its largest customers at a rate of $95/MWh. This renewable energy will count towards meeting the Province's renewable energy targets at a purchase

407

First Beam for Large Hadron Collider | Department of Energy  

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

Beam for Large Hadron Collider Beam for Large Hadron Collider First Beam for Large Hadron Collider September 10, 2008 - 3:20pm Addthis WASHINGTON, DC - An international collaboration of scientists today sent the first beam of protons zooming at nearly the speed of light around the world's most powerful particle accelerator-the Large Hadron Collider (LHC)-located at the CERN laboratory near Geneva, Switzerland. The U.S. Department of Energy (DOE) and the National Science Foundation (NSF) invested a total $531 million in the construction of the accelerator and its detectors, which scientists believe could help unlock extraordinary discoveries about the nature of the physical universe. Celebrations across the U.S. and around the world mark the LHC's first circulating beam, an occasion more than 15 years in the making. An

408

Using large eddy simulations to understand flow mixing | Argonne National  

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

large eddy simulations to understand flow mixing large eddy simulations to understand flow mixing March 4, 2013 Tweet EmailPrint In nuclear power plants, turbulent flow streams of different velocity and density mix rapidly at right angles in pipes. If those mixing flow streams are of different temperatures, thermal fluctuations result on the pipe wall. Such fluctuations can damage a pipe's structure and, ultimately, cause its failure. To better understand this phenomenon and to predict the effects, scientists have developed modeling methods known as large eddy simulations (LES). LES models only the energy-carrying large scales of motion, using a filtering mechanism to account for subgrid-scale motion. Thanks to recent advances in high-performance computing, the technique has become increasingly popular for simulating unsteady flows, allowing high fidelity

409

Wind Power Integration via Aggregator-Consumer Coordination: A Game Theoretic Approach  

E-Print Network (OSTI)

Wind Power Integration via Aggregator-Consumer Coordination: A Game Theoretic Approach Chenye Wu@ie.cuhk.edu.hk Abstract--Due to the stochastic nature of wind power, its large-scale integration into the power grid-side resources via pricing in order to tackle the intermittency and fluctuations in wind power generation

Huang, Jianwei

410

Study about the possibility of flicker effect simulation caused by nonlinear power loads  

Science Conference Proceedings (OSTI)

The Electric Arc Furnace (EAF) is a very large power load, determining the negative effects on the power quality: flicker effect, harmonics currents, unbalanced load, and reactive power. These negative effects are due to the nonlinear characteristic ... Keywords: flicker, harmonics, interharmonics, power quality, simulation and modeling

Manuela Panoiu; Caius Panoiu; Ioan Sora; Raluca Rob

2008-08-01T23:59:59.000Z

411

The design of new wind power controller based on Superconducting Magnetic Energy Storage  

Science Conference Proceedings (OSTI)

The fluctuation and intermittent with wind power output, as a key factor to connect a large-scale wind power system to grid, which result s in an adverse impact on the power system continues to grow. In order to reduce the net stability impact of the ... Keywords: Wind Farm, Superconducting Magnetic Energy Storage, Wind Power, Applied Superconductivity

Zhou Xue-Song; Quan Bo; Ma You-Jie; Wu Le

2010-08-01T23:59:59.000Z

412

Power Management Controls  

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

additional savings of 1.3 billion are lost because power management is present, but disabled. In some cases, power management is not compatible with the application or doesn't...

413

PowerPoint Presentation  

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

resolved Power capture and conversion in line with prediction 11 CF16539GG 1 OCEAN POWER DELIVERY LTD PROJECTS 12 CF16539GG 1 Enersis - Project 1 Enersis Portugal's largest...

414

Power and energy  

Science Conference Proceedings (OSTI)

The design and manufacture of electric power equipment, the one electrotechnology in which Europe could gain worldwide dominance by the end of the century, is examined. All three power-equipment categories-generation, transmission, and distribution-are ...

G. Zorpette

1990-04-01T23:59:59.000Z

415

IBM POWER6 microarchitecture  

Science Conference Proceedings (OSTI)

This paper describes the implementation of the IBM POWER6 microprocessor, a two-way simultaneous multithreaded (SMT) dual-core chip whose key features include binary compatibility with IBM POWER5 microprocessor-based systems; increased ...

H. Q. Le; W. J. Starke; J. S. Fields; F. P. O'Connell; D. Q. Nguyen; B. J. Ronchetti; W. M. Sauer; E. M. Schwarz; M. T. Vaden

2007-11-01T23:59:59.000Z

416

2025 Power Marketing Initiative  

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

and is in the process of developing a plan for marketing and allocating LAP hydroelectric power after the FES contracts expire. We call this plan our 2025 Power Marketing...

417

Space Solar Power Program  

DOE Green Energy (OSTI)

Information pertaining to the Space Solar Power Program is presented on energy analysis; markets; overall development plan; organizational plan; environmental and safety issues; power systems; space transportation; space manufacturing, construction, operations; design examples; and finance.

Arif, H.; Barbosa, H.; Bardet, C.; Baroud, M.; Behar, A.; Berrier, K.; Berthe, P.; Bertrand, R.; Bibyk, I.; Bisson, J.; Bloch, L.; Bobadilla, G.; Bourque, D.; Bush, L.; Carandang, R.; Chiku, T.; Crosby, N.; De Seixas, M.; De Vries, J.; Doll, S.; Dufour, F.; Eckart, P.; Fahey, M.; Fenot, F.; Foeckersperger, S.; Fontaine, J.E.; Fowler, R.; Frey, H.; Fujio, H.; Gasa, J.M.; Gleave, J.; Godoe, J.; Green, I.; Haeberli, R.; Hanada, T.; Ha

1992-08-01T23:59:59.000Z

418

Body powered thermoelectric systems  

E-Print Network (OSTI)

Great interest exists for and progress has be made in the effective utilization of the human body as a possible power supply in hopes of powering such applications as sensors and continuously monitoring medical devices ...

Settaluri, Krishna Tej

2012-01-01T23:59:59.000Z

419

Data Center Power Consumption  

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

Center Power Consumption Center Power Consumption A new look at a growing problem Fact - Data center power density up 10x in the last 10 years 2.1 kW/rack (1992); 14 kW/rack (2007) Racks are not fully populated due to power/cooling constraints Fact - Increasing processor power Moore's law Fact - Energy cost going up 3 yr. energy cost equivalent to acquisition cost Fact - Iterative power life cycle Takes as much energy to cool computers as it takes to power them. Fact - Over-provisioning Most data centers are over-provisioned with cooling and still have hot spots November 2007 SubZero Engineering An Industry at the Crossroads Conflict between scaling IT demands and energy efficiency Server Efficiency is improving year after year Performance/Watt doubles every 2 years Power Density is Going Up

420

Splitting and Confirming Large File  

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

Splitting and Confirming Large File Splitting and Confirming Large File Name: Bradley C. Status: Student Age: 16 Location: N/A Country: N/A Date: June 2003 Question: I just calculated one billion digits of pi on my PC, how do I confirm them? I cannot access them because the file size is 1.28 GB, my ram is only 512 MB, meaning none of my word processor's will touch it. Is it possible to split the document, somehow? Then how do I confirm the digits? Replies: Checking the correctness of large numbers -- transcendental numbers like 'pi', or a large prime -- is not easy because there are many sources of error that are difficult to detect, or track down. Some, but by no means all are: 1. How "good" (that is convergent) is the algorithm? If, for example the algorithm is some sort of infinite series, there is always a truncation error, because you cannot compute an infinite number of terms in a finite amount of time. The further out you go in the algorithm, the more significant these errors become.

Note: This page contains sample records for the topic "large power time-of-day" 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

Large Magnetization at Carbon Surfaces  

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

Large Magnetization at Carbon Large Magnetization at Carbon Surfaces Large Magnetization at Carbon Surfaces Print Wednesday, 31 August 2011 00:00 From organic matter to pencil lead, carbon is a versatile element. Now, another use has been found: magnets. One would not expect pure carbon to be magnetic, but for more than ten years scientists have suspected that carbon can be made to be magnetic by doping it with nonmagnetic materials, changing its order ever so slightly. Years ago, the first x-ray images obtained using the scanning transmission x-ray microscope at ALS Beamline 11.0.2 provided valuable insight into how proton irradiation can cause carbon to transform into a ferromagnetic material. Now, researchers are using x-ray spectroscopy at ALS Beamline 4.0.2 to study the magnetism of proton-irradiated graphite surfaces in order to understand the effects of hydrogen (i.e. protons) on the electronic structure of carbon. In studying the properties of electrons responsible for magnetic order in graphite, researchers found that a very large magnetic moment is essentially switched on when hydrogen atoms are incorporated at the surface of graphite.

422

Fast segmentation of large images  

Science Conference Proceedings (OSTI)

The processing of large images is a generic problem in wide area surveillance. An important difficulty is that many image processing algorithms are global rather than local and hence can be infeasible due to the required computing time or memory resources ... Keywords: algorithm, image, segmentation

David J. Crisp; Peter Perry; Nicholas J. Redding

2003-02-01T23:59:59.000Z

423

Concentrating Solar Power  

DOE Green Energy (OSTI)

Summarizes the goals and activities of the DOE Solar Energy Technologies Program efforts within its concentrating solar power subprogram.

Not Available

2008-09-01T23:59:59.000Z

424

Southwestern Power Administration  

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

disconnect switches, microprocessor relays, power transformers, surge arresters, and transformer bushings information resources management equipment and supplies such as monitors,...

425

Power Conversion System Architectures  

Science Conference Proceedings (OSTI)

... of Transformers Vacuum Pressure Impregnated (VPI) Oil Immersed Cast Coil Transformer Configurations Single winding 5/24/2012 Power ...

2012-11-13T23:59:59.000Z

426

Soldier power. Battery charging.  

E-Print Network (OSTI)

Soldier power. Marine. Battery charging. Advertising. Remote. SOFC (NanoDynamics, AMI) 60 watts q SOFC #12;

Hong, Deog Ki

427

Electric Power Metrology News  

Science Conference Proceedings (OSTI)

... Next-generation "smart" electrical meters for residential and commercial ... NIST Team Demystifies Utility of Power Factor Correction Devices Release ...

2010-05-24T23:59:59.000Z

428

Increased Power Flow Guidebook  

Science Conference Proceedings (OSTI)

The Increased Power Flow (IPF) Guidebook is a state-of-the-art and best practices guidebook on increasing power flow capacities of existing overhead transmission lines, underground cables, power transformers, and substation equipment without compromising safety and reliability. The Guidebook discusses power system concerns and limiting conditions to increasing capacity, reviews available technology options and methods, illustrates alternatives with case studies, and analyzes costs and benefits of differe...

2005-11-16T23:59:59.000Z

429

Wind powering America: Colorado  

DOE Green Energy (OSTI)

This fact sheet contains information about green power programs in Colorado and a description of the Ponnequin Wind Farm.

O'Dell, K.

2000-04-03T23:59:59.000Z

430

Search for fusion power  

SciTech Connect

A brief review of the basics of fusion power is given. Both inertial confinement and magnetic confinement fusion are discussed.

Post, R.F.

1978-10-12T23:59:59.000Z

431

Understanding Cascading Failures in Power Grids  

E-Print Network (OSTI)

In the past, we have observed several large blackouts, i.e. loss of power to large areas. It has been noted by several researchers that these large blackouts are a result of a cascade of failures of various components. As a power grid is made up of several thousands or even millions of components (relays, breakers, transformers, etc.), it is quite plausible that a few of these components do not perform their function as desired. Their failure/misbehavior puts additional burden on the working components causing them to misbehave, and thus leading to a cascade of failures. The complexity of the entire power grid makes it difficult to model each and every individual component and study the stability of the entire system. For this reason, it is often the case that abstract models of the working of the power grid are constructed and then analyzed. These models need to be computationally tractable while serving as a reasonable model for the entire system. In this work, we construct one such model for the power grid...

Kadloor, Sachin

2010-01-01T23:59:59.000Z

432

Localized spectral analysis of fluctuating power generation from solar energy systems  

Science Conference Proceedings (OSTI)

Fluctuations in solar irradiance are a serious obstacle for the future large-scale application of photovoltaics. Occurring regularly with the passage of clouds, they can cause unexpected power variations and introduce voltage dips to the power distribution ...

Achim Woyte; Ronnie Belmans; Johan Nijs

2007-01-01T23:59:59.000Z

433

Assessing the costs of solar power plants for the Island of Roatn  

E-Print Network (OSTI)

This is an analysis assessing the installation costs of different solar power plant technologies and the current commercial availability for installation on the Island or Roatn. Commercial large-scale power plants have ...

Huwe, Ethan (Ethan L.)

2011-01-01T23:59:59.000Z

434

Photovoltaic power plant as FACTS devices in multi-feeder systems  

E-Print Network (OSTI)

This paper illustrates possible configurations for a large-scale photovoltaic power plant (PV), to operate as a FACTS (flexible AC transmission system) device in addition to operating as a source of renewable power generation. ...

Moawwad, Ahmed

435

Standby power use: How big is the problem? What policies and technical solutions can address it?  

E-Print Network (OSTI)

the standby power consumption of these devices in order tothe lowest power- consumption condition when a device ispower consumption in China is complicated by the fact that a large portion of Chinese consumers disconnect their electronic devices

2002-01-01T23:59:59.000Z

436

NREL Develops Sub-Hour Solar Power Data Set (Fact Sheet), NREL...  

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

Sub-Hour Solar Power Data Set NREL data will help utilities incorporate solar energy into their electric power systems. Large-scale deployment of solar energy requires a favorable...

437

Power Plant Cycling Costs  

Science Conference Proceedings (OSTI)

This report provides a detailed review of the most up to date data available on power plant cycling costs. The primary objective of this report is to increase awareness of power plant cycling cost, the use of these costs in renewable integration studies and to stimulate debate between policymakers, system dispatchers, plant personnel and power utilities.

Kumar, N.; Besuner, P.; Lefton, S.; Agan, D.; Hilleman, D.

2012-07-01T23:59:59.000Z

438

Advanced Graphics for Power System Operation  

Science Conference Proceedings (OSTI)

The secure operation of an electric utility system with its many interconnections presents a complex problem, with large quantities of data to be processed at the system control center. EPRI investigators have developed a new graphical user interface that will enable power system operators to perform tasks more accurately and quickly.

1994-06-23T23:59:59.000Z

439

The power 775 architecture at scale  

Science Conference Proceedings (OSTI)

We describe the IBM Power 775, a supercomputing system that was designed to provide high performance at very large scales. The system recently attained world record performance numbers for three important, communication-heavy supercomputing benchmarks: ... Keywords: Design studies, Measurement techniques, Performance attributes

Ramakrishnan Rajamony, Mark W. Stephenson, William Evan Speight

2013-06-01T23:59:59.000Z

440

Wind Farm Power System Model Development: Preprint  

DOE Green Energy (OSTI)

In some areas, wind power has reached a level where it begins to impact grid operation and the stability of local utilities. In this paper, the model development for a large wind farm will be presented. Wind farm dynamic behavior and contribution to stability during transmission system faults will be examined.

Muljadi, E.; Butterfield, C. P.

2004-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "large power time-of-day" 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

Peak power identification on power bumps during test application  

Science Conference Proceedings (OSTI)

Peak power during test can seriously impact circuit performance as well as the power safety for both CUT and tester. In this paper, we propose a method of layout-aware weighted switching activity identification flow that evaluates peak current/power ... Keywords: CMOS device, peak power identification, power bumps, test application, layout-aware weighted switching activity identification flow, dynamic power model, parasitic capacitance, resistance network, power bus, power delivery path, IR-drop, commercial power sign-off analysis tool

Wei Zhao; M. Tehranipoor

2011-07-01T23:59:59.000Z

442

Mixing device for materials with large density differences  

DOE Patents (OSTI)

An auger-tube pump mixing device is disclosed for mixing materials with large density differences while maintaining low stirring RPM and low power consumption. The mixing device minimizes the formation of vortexes and minimizes the incorporation of small bubbles in the liquid during mixing. By avoiding the creation of a vortex the device provides efficient stirring of full containers without spillage over the edge. Also, the device solves the problem of effective mixing in vessels where the liquid height is large compared to the diameter. Because of the gentle stirring or mixing by the device, it has application for biomedical uses where cell damage is to be avoided. 2 figs.

Gregg, D.W.

1994-08-16T23:59:59.000Z

443

Lafayette Public Power Auth | Open Energy Information  

Open Energy Info (EERE)

Public Power Auth Public Power Auth Jump to: navigation, search Name Lafayette Public Power Auth Place Louisiana Utility Id 11235 Utility Location Yes Ownership P NERC Location SPP NERC SPP Yes RTO SPP Yes Activity Generation Yes Activity Buying Transmission Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Large General Service Primary Service Discount Commercial Large General Service: Schedule C-2 Commercial Private Security Lighting: Schedule L-3 - 1000 W MV Floodlights Lighting Private Security Lighting: Schedule L-3 - 100W HPS Luminaires Lighting Private Security Lighting: Schedule L-3 - 150W HPS Luminaires Lighting

444

Idaho Power Co (Oregon) | Open Energy Information  

Open Energy Info (EERE)

Oregon) Oregon) Jump to: navigation, search Name Idaho Power Co Place Oregon Utility Id 9191 References Energy Information Administration.[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png 1 (Residential Service) Residential 19 (Large Power Service Secondary Service) Commercial 7 (Small General Service Three Phase) Commercial 9 (Large General Service Secondary Three Phase Service) Commercial Average Rates Residential: $0.0776/kWh Commercial: $0.0672/kWh Industrial: $0.0533/kWh The following table contains monthly sales and revenue data for Idaho Power Co (Oregon). Month RES REV (THOUSAND $) RES SALES (MWH) RES CONS COM REV (THOUSAND $) COM SALES (MWH) COM CONS IND_REV (THOUSAND $) IND SALES (MWH) IND CONS OTH REV (THOUSAND $) OTH SALES (MWH) OTH CONS TOT REV (THOUSAND $) TOT SALES (MWH) TOT CONS

445

Soft Magnetic Materials for High Power and High Frequency Power ...  

Science Conference Proceedings (OSTI)

Symposium, Advanced Materials for Power Electronics, Power Conditioning, and ... are in high demand for the next generation of miniaturized power electronics.

446

Wind Powering America Webinar: Wind Power Economics: Past, Present...  

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

Power Economics: Past, Present, and Future Trends Wind Powering America Webinar: Wind Power Economics: Past, Present, and Future Trends November 23, 2011 - 1:43pm Addthis Wind...

447

PARABOLIC TROUGH SOLAR POWER FOR COMPETITIVE U.S. MARKETS  

E-Print Network (OSTI)

Nine parabolic trough power plants located in the California Mojave Desert represent the only commercial development of large-scale solar power plants to date. Although all nine plants continue to operate today, no new solar power plants have been completed since 1990. Over the last several years, the parabolic trough industry has focused much of its efforts on international market opportunities. Although the power market in developing countries appears to offer a number of opportunities for parabolic trough technologies due to high growth and the availability of special financial incentives for renewables, these markets are also plagued with many difficulties for developers. In recent years, there has been some renewed interest in the U.S. domestic power market as a result of an emerging green market and green pricing incentives. Unfortunately, many of these market opportunities and incentives focus on smaller, more modular technologies (such as photovoltaics or wind power), and as a result they tend to exclude or are of minimum long-term benefit to large-scale concentrating solar power technologies. This paper looks at what is necessary for large-scale parabolic trough solar power plants to compete with state-of-the-art fossil power technology in a competitive U.S. power market.

Henry W. Price; Maui Hawaii; Henry W. Price; Rainer Kistner

1998-01-01T23:59:59.000Z

448

Parabolic Trough Solar Power for Competitive U.S. Markets  

DOE Green Energy (OSTI)

Nine parabolic trough power plants located in the California Mojave Desert represent the only commercial development of large-scale solar power plants to date. Although all nine plants continue to operate today, no new solar power plants have been completed since 1990. Over the last several years, the parabolic trough industry has focused much of its efforts on international market opportunities. Although the power market in developing countries appears to offer a number of opportunities for parabolic trough technologies due to high growth and the availability of special financial incentives for renewables, these markets are also plagued with many difficulties for developers. In recent years, there has been some renewed interest in the U.S. domestic power market as a result of an emerging green market and green pricing incentives. Unfortunately, many of these market opportunities and incentives focus on smaller, more modular technologies (such as photovoltaics or wind power), and as a result they tend to exclude or are of minimum long-term benefit to large-scale concentrating solar power technologies. This paper looks at what is necessary for large-scale parabolic trough solar power plants to compete with state-of-the-art fossil power technology in a competitive U.S. power market.

Henry W. Price

1998-11-01T23:59:59.000Z

449

Overview of DOE's large stationary Stirling engine development program  

SciTech Connect

This paper summarizes the results to date of a program, sponsored by DOE's Office of Fossil Energy, to develop large stationary Stirling engine power systems. Primary applications for such power plants include cogeneration and total energy systems, with a major advantage being their ability to employ solid coal and other non-scarce fuels in an environmentally acceptable manner. 8 refs.

Uherka, K.L.; Holtz, R.E.; Bunker, W.

1981-08-01T23:59:59.000Z

450

Electric Power Monthly  

Gasoline and Diesel Fuel Update (EIA)

Electric Power Monthly > Electric Power Monthly Back Issues Electric Power Monthly > Electric Power Monthly Back Issues Electric Power Monthly Back Issues Monthly Excel files zipped 2010 January February March April May June July August September October November December 2009 January February March April May June July August September October November December 2008 January February March March Supplement April May June July August September October November December 2007 January February March April May June July August September October November December 2006 January February March April May June July August September October November December 2005 January February March April May June July August September October November December

451

ADEPT: Efficient Power Conversion  

SciTech Connect

ADEPT Project: In todays increasingly electrified world, power conversionthe process of converting electricity between different currents, voltage levels, and frequenciesforms a vital link between the electronic devices we use every day and the sources of power required to run them. The 14 projects that make up ARPA-Es ADEPT Project, short for Agile Delivery of Electrical Power Technology, are paving the way for more energy efficient power conversion and advancing the basic building blocks of power conversion: circuits, transistors, inductors, transformers, and capacitors.

None

2011-01-01T23:59:59.000Z

452

Power factors revealed  

SciTech Connect

When it comes to power, not all electric appliances are equal. To find out how much power an appliance consumes, energy auditors occasionally multiply line voltage by the current reading obtained from a clamp-on ammeter. However, depending on the appliance, this simple calculation will not always reflect true power usages. Since utilities bill only for true energy usage, residential energy audits should reflect the true power usage. This article explains in detail measuring power usage, ending with a number of suggestions including use of a wattmeter rather than a ammeter. 2 figs.

Brule, P.

1997-05-01T23:59:59.000Z

453

Minimizing Process Energy Use for a Large TMP Mill With Pinch Technology  

Science Conference Proceedings (OSTI)

American Process Inc. conducted an energy targeting scoping study for a large thermomechanical pulping (TMP) mill, using Pinch analysis. The mill produces bleached, unbleached, and semibleached kraft market pulp and standard and offset newsprint. Operations are supported by steam raised in the recovery boiler and in the power boilers. Oil and hog fuels are used in the power boilers. Some power is generated on site and also purchased. The study concentrated on identifying the steps necessary for the mill ...

2000-10-31T23:59:59.000Z

454

Cyber vulnerability in power systems operation and control  

Science Conference Proceedings (OSTI)

Modern power systems are composed of several interacting national systems synchronously or asynchronously interconnected over large geographic areas, and in the European case on a continental basis. In each country several areas are put under the control ...

Ettore Bompard; Paolo Cuccia; Marcelo Masera; Igor Nai Fovino

2012-01-01T23:59:59.000Z

455

The windy city : harnessing power in the neighborhood landscape  

E-Print Network (OSTI)

As wind power has spread in North America, so has an awareness that community acceptance will largely determine whether this renewable energy source continues to grow. Despite apparently widespread popular support for wind ...

Cherry, Jonathan S. (Jonathan Sher)

2008-01-01T23:59:59.000Z

456

An evolutionary fuel assembly design for high power density BWRs  

E-Print Network (OSTI)

An evolutionary BWR fuel assembly design was studied as a means to increase the power density of current and future BWR cores. The new assembly concept is based on replacing four traditional assemblies and large water gap ...

Karahan, Aydin

2007-01-01T23:59:59.000Z

457

large hydro | OpenEI  

Open Energy Info (EERE)

large hydro large hydro Dataset Summary Description The Planning Database Project provides the UK Department of Energy and Climate Change (DECC) with regular data to track progress towards achieving EU targets for electricity generation from renewable energy (RE) sources. Extracts from the database are available each month. Information collected in the database includes: name, location and installed capacity of RE projects over 0.1MW; environmental designations; planning status; and construction status. Included here is the October 2010 Progress Datasheet, and an extract from December, 15, 2010 (i.e. Source UK Department of Energy and Climate Change (DECC) Date Released December 15th, 2010 (3 years ago) Date Updated Unknown Keywords biomass co-firing installed capacity

458

Multimode power processor  

DOE Patents (OSTI)

In one embodiment, a power processor which operates in three modes: an inverter mode wherein power is delivered from a battery to an AC power grid or load; a battery charger mode wherein the battery is charged by a generator; and a parallel mode wherein the generator supplies power to the AC power grid or load in parallel with the battery. In the parallel mode, the system adapts to arbitrary non-linear loads. The power processor may operate on a per-phase basis wherein the load may be synthetically transferred from one phase to another by way of a bumpless transfer which causes no interruption of power to the load when transferring energy sources. Voltage transients and frequency transients delivered to the load when switching between the generator and battery sources are minimized, thereby providing an uninterruptible power supply. The power processor may be used as part of a hybrid electrical power source system which may contain, in one embodiment, a photovoltaic array, diesel engine, and battery power sources. 31 figs.

O' Sullivan, G.A.; O' Sullivan, J.A.

1999-07-27T23:59:59.000Z

459

Multimode power processor  

SciTech Connect

In one embodiment, a power processor which operates in three modes: an inverter mode wherein power is delivered from a battery to an AC power grid or load; a battery charger mode wherein the battery is charged by a generator; and a parallel mode wherein the generator supplies power to the AC power grid or load in parallel with the battery. In the parallel mode, the system adapts to arbitrary non-linear loads. The power processor may operate on a per-phase basis wherein the load may be synthetically transferred from one phase to another by way of a bumpless transfer which causes no interruption of power to the load when transferring energy sources. Voltage transients and frequency transients delivered to the load when switching between the generator and battery sources are minimized, thereby providing an uninterruptible power supply. The power processor may be used as part of a hybrid electrical power source system which may contain, in one embodiment, a photovoltaic array, diesel engine, and battery power sources.

O' Sullivan, George A. (Pottersville, NJ); O' Sullivan, Joseph A. (St. Louis, MO)

1999-01-01T23:59:59.000Z

460

PowerPoint Presentation  

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

6 Northern Power Systems, Inc 6 Northern Power Systems, Inc Northern Power Systems 182 Mad River Park Waitsfield, VT 05673 Ultracapacitor EnergyBridge(tm) UPS for Palmdale Water District DOE/ESS PEER Review November 3, 2006 11/03/2006 Northern Power Systems, Inc © 2006 2 Northern Power  Distributed Energy Systems Corp (NASDAQ:DESC)  Energy Solutions since 1974  Products, Systems and Services Divisions  Hundreds of Projects around the World  HQ and Manufacturing in Vermont  Regional offices in NY, TX, CA, England, and Mexico 11/03/2006 Northern Power Systems, Inc © 2006 3 Project Overview  CEC - California Energy Commission  Funding agency  Palmdale Water District  Award recipient, host site  Northern Power  Technology provider  Black & Veatch  Owner's engineer

Note: This page contains sample records for the topic "large power time-of-day" 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

Solar thermal power  

DOE Green Energy (OSTI)

Solar thermal power is produced by three types of concentrating systems, which utilize parabolic troughs, dishes, and heliostats as the solar concentrators. These systems are at various levels of development and commercialization in the United States and in Europe. The U.S. Industry is currently developing these systems for export at the end of this century and at the beginning of the next one for remote power, village electrification, and grid-connected power. U.S. utilities are not forecasting to need power generation capacity until the middle of the first decade of the 21{sup st} century. At that time, solar thermal electric power systems should be cost competitive with conventional power generation in some unique U.S. markets. In this paper, the authors describe the current status of the development of trough electric, dish/engine, and power tower solar generation systems. 46 refs., 20 figs., 8 tabs.

Mancini, T.R.; Kolb, G.J.; Prairie, M.R. [Sandia National Labs., Albuquerque, NM (United States)

1997-12-31T23:59:59.000Z

462

South Louisiana Elec Coop Assn | Open Energy Information  

Open Energy Info (EERE)

Elec Coop Assn Elec Coop Assn Jump to: navigation, search Name South Louisiana Elec Coop Assn Place Louisiana Utility Id 17565 Utility Location Yes Ownership C NERC Location SERC NERC SERC Yes RTO SPP Yes Activity Distribution Yes Activity Bundled Services Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Camp or Remote Service Residential Farm, Home or Residential Residential High Load Factor Incentive Service Industrial Large Power Service - Commercial Commercial Large Power Service - Industrial Industrial Large Power Service Time-of-Day "A" Industrial Large Power Service Time-of-Day "B" Industrial

463

Large Magnetization at Carbon Surfaces  

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

Large Magnetization at Carbon Surfaces Print Large Magnetization at Carbon Surfaces Print From organic matter to pencil lead, carbon is a versatile element. Now, another use has been found: magnets. One would not expect pure carbon to be magnetic, but for more than ten years scientists have suspected that carbon can be made to be magnetic by doping it with nonmagnetic materials, changing its order ever so slightly. Years ago, the first x-ray images obtained using the scanning transmission x-ray microscope at ALS Beamline 11.0.2 provided valuable insight into how proton irradiation can cause carbon to transform into a ferromagnetic material. Now, researchers are using x-ray spectroscopy at ALS Beamline 4.0.2 to study the magnetism of proton-irradiated graphite surfaces in order to understand the effects of hydrogen (i.e. protons) on the electronic structure of carbon. In studying the properties of electrons responsible for magnetic order in graphite, researchers found that a very large magnetic moment is essentially switched on when hydrogen atoms are incorporated at the surface of graphite.

464

Large Magnetization at Carbon Surfaces  

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

Large Magnetization at Carbon Surfaces Print Large Magnetization at Carbon Surfaces Print From organic matter to pencil lead, carbon is a versatile element. Now, another use has been found: magnets. One would not expect pure carbon to be magnetic, but for more than ten years scientists have suspected that carbon can be made to be magnetic by doping it with nonmagnetic materials, changing its order ever so slightly. Years ago, the first x-ray images obtained using the scanning transmission x-ray microscope at ALS Beamline 11.0.2 provided valuable insight into how proton irradiation can cause carbon to transform into a ferromagnetic material. Now, researchers are using x-ray spectroscopy at ALS Beamline 4.0.2 to study the magnetism of proton-irradiated graphite surfaces in order to understand the effects of hydrogen (i.e. protons) on the electronic structure of carbon. In studying the properties of electrons responsible for magnetic order in graphite, researchers found that a very large magnetic moment is essentially switched on when hydrogen atoms are incorporated at the surface of graphite.

465

Large Magnetization at Carbon Surfaces  

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

Large Magnetization at Carbon Surfaces Print Large Magnetization at Carbon Surfaces Print From organic matter to pencil lead, carbon is a versatile element. Now, another use has been found: magnets. One would not expect pure carbon to be magnetic, but for more than ten years scientists have suspected that carbon can be made to be magnetic by doping it with nonmagnetic materials, changing its order ever so slightly. Years ago, the first x-ray images obtained using the scanning transmission x-ray microscope at ALS Beamline 11.0.2 provided valuable insight into how proton irradiation can cause carbon to transform into a ferromagnetic material. Now, researchers are using x-ray spectroscopy at ALS Beamline 4.0.2 to study the magnetism of proton-irradiated graphite surfaces in order to understand the effects of hydrogen (i.e. protons) on the electronic structure of carbon. In studying the properties of electrons responsible for magnetic order in graphite, researchers found that a very large magnetic moment is essentially switched on when hydrogen atoms are incorporated at the surface of graphite.

466

Large Magnetization at Carbon Surfaces  

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

Large Magnetization at Carbon Surfaces Print Large Magnetization at Carbon Surfaces Print From organic matter to pencil lead, carbon is a versatile element. Now, another use has been found: magnets. One would not expect pure carbon to be magnetic, but for more than ten years scientists have suspected that carbon can be made to be magnetic by doping it with nonmagnetic materials, changing its order ever so slightly. Years ago, the first x-ray images obtained using the scanning transmission x-ray microscope at ALS Beamline 11.0.2 provided valuable insight into how proton irradiation can cause carbon to transform into a ferromagnetic material. Now, researchers are using x-ray spectroscopy at ALS Beamline 4.0.2 to study the magnetism of proton-irradiated graphite surfaces in order to understand the effects of hydrogen (i.e. protons) on the electronic structure of carbon. In studying the properties of electrons responsible for magnetic order in graphite, researchers found that a very large magnetic moment is essentially switched on when hydrogen atoms are incorporated at the surface of graphite.

467

Plant power : the cost of using biomass for power generation and potential for decreased greenhouse gas emissions  

E-Print Network (OSTI)

To date, biomass has not been a large source of power generation in the United States, despite the potential for greenhouse gas (GHG) benefits from displacing coal with carbon neutral biomass. In this thesis, the fuel cycle ...

Cuellar, Amanda Dulcinea

2012-01-01T23:59:59.000Z

468

Heat gain from power panelboard.  

E-Print Network (OSTI)

??This thesis focuses on estimating the power loss from power panelboards by means of power loss models. The model is intended to be used by (more)

Piesciorovsky, Emilio Carlos

2009-01-01T23:59:59.000Z

469

Vehicle Technologies Office: Power Electronics  

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

Power Electronics to Power Electronics to someone by E-mail Share Vehicle Technologies Office: Power Electronics on Facebook Tweet about Vehicle Technologies Office: Power Electronics on Twitter Bookmark Vehicle Technologies Office: Power Electronics on Google Bookmark Vehicle Technologies Office: Power Electronics on Delicious Rank Vehicle Technologies Office: Power Electronics on Digg Find More places to share Vehicle Technologies Office: Power Electronics on AddThis.com... Just the Basics Hybrid & Vehicle Systems Energy Storage Advanced Power Electronics & Electrical Machines Power Electronics Electrical Machines Thermal Control & System Integration Advanced Combustion Engines Fuels & Lubricants Materials Technologies Power Electronics The power electronics activity focuses on research and development (R&D)

470

Solartech Power | Open Energy Information  

Open Energy Info (EERE)

Solartech Power Jump to: navigation, search Name Solartech Power Place Cerritos, California Zip 90703 Sector Solar Product Solartech power is a distributer of solar modules....

471

Peak Power at Peak Efficiency  

Peak Power At Peak Efficiency. 21. st. Industry Growth Forum. October 2008. PJ Piper (857) 350?3100. ... At <$10/bbl oil, QM Powers electric ...

472

Microsoft PowerPoint - IP  

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

U.S. Topics covered have included: * Sustainable Energy Development * Power Reactors * Nuclear Power Plant Planning * Nuclear Power Plant Pre-Operational Support IAEA's 10 Years...

473

Green Power Network: News Archive  

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

to main content U.S. Department of Energy Energy Efficiency and Renewable Energy Green Power Network About the GPN Green Power Markets Buying Green Power Onsite Renewable...

474

Principle Power | Open Energy Information  

Open Energy Info (EERE)

Principle Power Place San Francisco, California Zip 94120 Sector Renewable Energy Product Principle Power is a global independent power producer committed to delivering green,...

475

Southwestern Power Administration One West...  

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

of the United States Department of Energy Southwestern Power Administration Strategic Plan March 2013 Administrator's Message The Southwestern Power Administration powers the...

476

Energy Harvesting Aware Power Management  

E-Print Network (OSTI)

and J. Schiller, Utilizing solar power in wireless sensorthat only the actual solar power available, and not anyconverted to electric power using solar cells. The magnitude

Kansal, Aman; Srivastava, Mani B

2005-01-01T23:59:59.000Z

477

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

E-Print Network (OSTI)

and smoothing e?ects at a wind farm. Wind Energy 7 (2), 61uctuations from large wind farms. IEEE Transactions on Power

Mills, Andrew

2010-01-01T23:59:59.000Z

478

Microsoft PowerPoint - BNL Overview for NESRC Workshop.pptx  

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

Storage Generation Organic photovoltaics Inexpensive for large scale deployment f ff Transmission Superconducting Lines Power density driver Storage Batteries X-ray probes,...

479

Enhanced control of DFIG-based wind power plants to comply with the international grid codes.  

E-Print Network (OSTI)

??A review of the latest international grid codes shows that large wind power plants are stipulated to not only ride-through various fault conditions, but also (more)

Mohseni, Mansour

2011-01-01T23:59:59.000Z

480

Supporting Solar Power in Renewables Portfolio Standards: Experience from the United States  

E-Print Network (OSTI)

and CSP Projects ..of the concentrating solar power (CSP) market in the U.S.1980s, construction of CSP capacity in the U.S. largely

Wiser, Ryan

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "large power time-of-day" 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

Evaluation of Fuel Cell Auxiliary Power Units for Heavy-Duty Diesel Trucks  

E-Print Network (OSTI)

J. , Gottesfeld, S. , 1999. Direct methanol fuel cells.Fuel cells for transportation. 1999 Annual Progress Report.Auxiliary power units; Fuel cells 1. Introduction A large

2002-01-01T23:59:59.000Z

482

Evaluation of Fuel Cell Auxiliary Power Units for Heavy-Duty Diesel Trucks  

E-Print Network (OSTI)

Fuel cells for transportation. 1999 Annual Progress Report.J. , Gottesfeld, S. , 1999. Direct methanol fuel cells.Auxiliary power units; Fuel cells 1. Introduction A large

2002-01-01T23:59:59.000Z

483

Georgia Power Co | Open Energy Information  

Open Energy Info (EERE)

Georgia Power Co Georgia Power Co Jump to: navigation, search Name Georgia Power Co Place Georgia Utility Id 7140 Utility Location Yes Ownership I NERC Location SERC NERC SERC Yes Operates Generating Plant Yes Activity Generation Yes Activity Transmission Yes Activity Buying Transmission Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] Energy Information Administration Form 826[2] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png BU-9 - Back Up Service DSM-R-4 - Demand Side Management Residential Residential Irrigation Off-Peak Service Commercial Off-Peak Service Rider - Schedule: OP-5 PLL-7 (Power and Light Large) Commercial

484

Clyde Light & Power | Open Energy Information  

Open Energy Info (EERE)

Power Power Jump to: navigation, search Name Clyde Light & Power Place Ohio Utility Id 3824 Utility Location Yes Ownership M NERC Location RFC NERC RFC Yes RTO PJM Yes Activity Transmission Yes Activity Buying Transmission Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png C1 - General Service - No Demand Commercial C1A - General Service No Demand - Three Phase Commercial C2 - Commercial Commercial FL - Flood Light Lighting G1- General Service w/ Demand Commercial LP1- Large Power Secondary Industrial LP2 - Primary Industrial R1 - Residential Residential

485

concentrating solar power | OpenEI  

Open Energy Info (EERE)

concentrating solar power concentrating solar power Dataset Summary Description This dataset is part of a larger internal dataset at the National Renewable Energy Laboratory (NREL) that explores various characteristics of large solar electric (both PV and CSP) facilities around the United States. This dataset focuses on the land use characteristics for solar facilities that are either under construction or currently in operation. Source Land-Use Requirements for Solar Power Plants in the United States Date Released June 25th, 2013 (7 months ago) Date Updated Unknown Keywords acres area average concentrating solar power csp Density electric hectares km2 land land requirements land use land-use mean photovoltaic photovoltaics PV solar statistics Data application/vnd.openxmlformats-officedocument.spreadsheetml.sheet icon Master Solar Land Use Spreadsheet (xlsx, 1.5 MiB)

486

Superconductivity for electric power systems: Program overview  

SciTech Connect

Largely due to government and private industry partnerships, electric power applications based upon high-temperature superconductivity are now being designed and tested only seven years after the discovery of the high-temperature superconductors. These applications offer many benefits to the national electric system including: increased energy efficiency, reduced equipment size, reduced emissions, increased stability/reliability, deferred expansion, and flexible electricity dispatch/load management. All of these benefits have a common outcome: lower electricity costs and improved environmental quality. The U.S. Department of Energy (DOE) sponsors research and development through its Superconductivity Program for Electric Power Systems. This program will help develop the technology needed for U.S. industries to commercialize high-temperature superconductive electric power applications. DOE envisions that by 2010 the U.S. electric power systems equipment industry will regain a major share of the global market by offering superconducting products that outperform the competition.

Not Available

1995-02-01T23:59:59.000Z

487

South Central Power Company | Open Energy Information  

Open Energy Info (EERE)

Central Power Company Central Power Company Place Ohio Utility Id 18085 Utility Location Yes Ownership C NERC Location RFC NERC RFC Yes RTO PJM Yes Activity Distribution Yes Alt Fuel Vehicle Yes Alt Fuel Vehicle2 Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Schedule GS General Service Schedule LP Large Power Service Schedule R Residential Service Residential Average Rates Residential: $0.1020/kWh Commercial: $0.0973/kWh Industrial: $0.0749/kWh References ↑ "EIA Form EIA-861 Final Data File for 2010 - File1_a" Retrieved from "http://en.openei.org/w/index.php?title=South_Central_Power_Company&oldid=411543

488

Coast Electric Power Assn | Open Energy Information  

Open Energy Info (EERE)

Coast Electric Power Assn Coast Electric Power Assn Jump to: navigation, search Name Coast Electric Power Assn Place Mississippi Utility Id 3841 Utility Location Yes Ownership C NERC Location SERC NERC SERC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] Energy Information Administration Form 826[2] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Churches Commercial Churches Time of Use Commercial Commercial (Over 25 kW) Commercial Commercial (Over 25 kW) Time of Use Commercial Industrial (Over 1000 kW) Industrial Industrial (Over 1000 kW) Time of Use Industrial Large Power (Over 2500 kW) Industrial Light Service HPS 100 W - Rural Lighting

489

Electrokinetic effects in power transformers  

Science Conference Proceedings (OSTI)

Electrokinetic effects such as static electrification can cause catastrophic failures in large forced-oil-cooled power transformers. Experimental and analytical studies confirm that surface charges can significantly impact dielectric integrity. The project team used a closed-loop oil circulation system and full-scale models of power transformer cooling duct structures to conduct controlled experiments. They measured charge density in the oil-resulting from flow through these structures-as a function of flow rate, temperature, ac voltage stress, moisture, and duct types. In addition, they constructed models so that the spatial distribution of electrostatically induced currents and stresses could be determined. They developed a finite-element computer program to study the complex voltage distribution in the models and in two transformer winding examples. A special test cell was used to examine the impact of surface charge on creep strength of transformer pressboard. Static electrification in power transformer duct structures is aggravated by flow rate, temperature, presence of collars, and ac energization; and it is mitigated by increasing oil moisture content. Shell-form model structures exhibit more charge generation than disk-type core-form winding ducts under corresponding conditions. Partial discharges were detected in one shell-form model but only under the worst conditions. These discharges were not energetic enough to produce visible damage. Preliminary finite-element analysis indicates that surface charge has more impact on cumulative stress in a shell-form geometry than in a core-form disk winding.

Nelson, J.K.; Lee, M.J.; Salon, S.J. (Rensselaer Polytechnic Inst., Troy, NY (United States). Dept. of Electric Power Engineering)

1992-11-01T23:59:59.000Z

490

Power Quality Aspects in a Wind Power Plant: Preprint  

SciTech Connect

Although many operational aspects affect wind power plant operation, this paper focuses on power quality. Because a wind power plant is connected to the grid, it is very important to understand the sources of disturbances that affect the power quality.

Muljadi, E.; Butterfield, C. P.; Chacon, J.; Romanowitz, H.

2006-01-01T23:59:59.000Z

491

Large-Eddy Simulation of Wind-Plant Aerodynamics  

DOE Green Energy (OSTI)

In this work, we present results of a large-eddy simulation of the 48 multi-megawatt turbines composing the Lillgrund wind plant. Turbulent inflow wind is created by performing an atmospheric boundary layer precursor simulation, and turbines are modeled using a rotating, variable-speed actuator line representation. The motivation for this work is that few others have done large-eddy simulations of wind plants with a substantial number of turbines, and the methods for carrying out the simulations are varied. We wish to draw upon the strengths of the existing simulations and our growing atmospheric large-eddy simulation capability to create a sound methodology for performing this type of simulation. We used the OpenFOAM CFD toolbox to create our solver. The simulated time-averaged power production of the turbines in the plant agrees well with field observations, except with the sixth turbine and beyond in each wind-aligned. The power produced by each of those turbines is overpredicted by 25-40%. A direct comparison between simulated and field data is difficult because we simulate one wind direction with a speed and turbulence intensity characteristic of Lillgrund, but the field observations were taken over a year of varying conditions. The simulation shows the significant 60-70% decrease in the performance of the turbines behind the front row in this plant that has a spacing of 4.3 rotor diameters in this direction. The overall plant efficiency is well predicted. This work shows the importance of using local grid refinement to simultaneously capture the meter-scale details of the turbine wake and the kilometer-scale turbulent atmospheric structures. Although this work illustrates the power of large-eddy simulation in producing a time-accurate solution, it required about one million processor-hours, showing the significant cost of large-eddy simulation.

Churchfield, M. J.; Lee, S.; Moriarty, P. J.; Martinez, L. A.; Leonardi, S.; Vijayakumar, G.; Brasseur, J. G.

2012-01-01T23:59:59.000Z

492

Pipelines to Power Lines: Gas Transportation for Electricity Generation  

Science Conference Proceedings (OSTI)

Gas-fired power generation represents a major growth market for the natural gas industry; but the large, high pressure, highly variable loads required for individual power generators can be difficult to serve. This report, cosponsored by the Gas Research Institute and EPRI, is a design stage assessment of the engineering and costs of the pipelines needed to handle these types of loads.

1995-03-10T23:59:59.000Z

493

Markov Model Based Power Management in Server Clusters  

Science Conference Proceedings (OSTI)

Many high-end computing systems use an extremely large number of power-hungry commercial components to achieve high performance. Power reduction and energy conservation are important in these systems for the reason of minimizing operating cost. Two main ... Keywords: reen computing, constrained Markov decision

Xinying Zheng; Yu Cai

2010-12-01T23:59:59.000Z

494

An imaging, communications and beamed power architecture for first responders  

Science Conference Proceedings (OSTI)

Electric power delivered as wireless beams through aerial platforms can make a large difference to the ability of first responders to find and rescue survivors in an emergency. An architecture suitable for India is proposed, synergizing developments ... Keywords: aerostat, antenna, emergency response, millimeter wave, power beaming, systems, waveguide

Narayanan Komerath

2011-12-01T23:59:59.000Z

495

Towards an understanding of campus-scale power consumption  

Science Conference Proceedings (OSTI)

Commercial buildings are significant consumers of electricity. In this paper, we collect and analyze six weeks of data from 39 power meters in three buildings of a campus of a large company. We use an unsupervised anomaly detection technique based on ... Keywords: anomaly detection, commercial buildings, occupancy modeling, power consumption

Gowtham Bellala; Manish Marwah; Martin Arlitt; Geoff Lyon; Cullen E. Bash

2011-11-01T23:59:59.000Z