Sample records for delmarva power effective

  1. POWER PURCHASE AGREEMENT DELMARVA POWER & LIGHT COMPANY

    E-Print Network [OSTI]

    Firestone, Jeremy

    POWER PURCHASE AGREEMENT between DELMARVA POWER & LIGHT COMPANY ("Buyer") and BLUEWATER WIND 3.5 Energy Forecasts, Scheduling and Balancing.......................................... 39 3

  2. Delmarva Power | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE Facility Database DataDatatechnicNewDeafDeerDelIowa:DelcerDelmarva Power

  3. Delmarva Power- Home Performance with Energy Star Incentive Program

    Broader source: Energy.gov [DOE]

    Delmarva Power and Light Company offers the Home Performance with Energy Star Program, which provides incentives for residential customers who have audits performed by participating contractors....

  4. Delmarva Power (Maryland) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluating A Potential Microhydro SiteDayton Power & Light CoDelaware PowerDelmarva

  5. Delmarva Power | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluating A Potential Microhydro SiteDayton Power & Light CoDelaware

  6. Delmarva Power- Commercial and Industrial Energy Savings Program

    Broader source: Energy.gov [DOE]

    The Delmarva Power Commercial and Industrial (C&I) Energy Savings Program is designed to promote and encourage the incorporation of energy efficient equipment, products, and services into non-...

  7. Bluewater Wind/Delmarva Fact Sheet February 2008

    E-Print Network [OSTI]

    Firestone, Jeremy

    Wind Power Purchase Agreement The Power Purchase Agreement is a contract that is fully written, not purchase of a wind farm. If the project is never built or if once built, it fails to produce the power but not yet signed by the parties-- Delmarva Power and Bluewater Wind. Bluewater Wind agrees to build a 150

  8. Delmarva- Commissioning and Operations Incentive Programs

    Broader source: Energy.gov [DOE]

    Delmarva's Enhanced Commissioning Program offers building design and commissioning incentives to commercial, industrial, governmental and institutional customers planning large new buildings....

  9. Delmarva Power Light Company Delmarva Power | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualPropertyd8c-a9ae-f8521cbb8489 No revision hasda62829c05b NoCounty,Delaware: Energy

  10. Expert system support of a heat transfer model to optimize soot blowing - A case study at Delmarva`s Edge Moor Unit No. 5

    SciTech Connect (OSTI)

    Nasal, J.R.; Deaver, R.

    1995-12-31T23:59:59.000Z

    In response to an increasing demand for operational tools that benefit both efficiency and environmental compliance, General Physics Corporation (GP) has developed and installed a unique aid to optimize sootblowing at Delmarva Power`s Edge Moor Unit No. 5. By combining expert system techniques with a rigorous mathematical model, a robust and reliable indication of boiler section(s) cleanliness is graphically presented to the control room operators on a minute-to-minute basis. The overall approach used in the heat transfer model is based upon technology developed in the former Soviet Union while the expert system component acts as an independent {open_quotes}cross-check{close_quotes} of the values calculated in the math model. This paper presents an overview of the general engineering approach used in developing the boiler cleanliness module as an integral part of a power plant`s performance monitoring system. It includes graphical displays of the user interface and describes the concepts behind the heat transfer model as well as typical expert system rules used to verify the accuracy of the model. The paper concludes with {open_quotes}lessons learned{close_quotes} and a comparison of empirical data versus calculated cleanliness values for the various boiler sections over a wide capacity range of the boiler.

  11. Expert system support of a heat transfer model to optimize soot blowing - a case study at Delmarva`s Edge Moor Unit No. 5

    SciTech Connect (OSTI)

    Nasal, J.R.; DesJardins, R.R.; Deaver, R.

    1996-05-01T23:59:59.000Z

    In response to an increasing demand for operational tools that benefit both efficiency and environmental compliance, General Physics Corporation (GP) has developed and installed a unique aid to optimize sootblowing at Delmarva Power`s Edge Moor Unit No. 5. By combining expert system techniques with a rigorous mathematical model, a robust and reliable indication of boiler section(s) cleanliness is graphically presented to the control room operators on a minute-to-minute basis. The overall approach used in the heat transfer model is based upon technology developed in the former Soviet Union while the expert system component acts as an independent {open_quotes}cross-check{close_quotes} of the values calculated in the math model. This paper presents an overview of the general engineering approach used in developing the boiler cleanliness module as an integral part of a power plant`s, performance monitoring system. It includes graphical displays of the user interface and describes the concepts behind the heat transfer model as well as typical expert system rules used to verify the accuracy of the model. The paper concludes with {open_quotes}lessons learned{close_quotes} and a comparison of empirical data versus calculated cleanliness values for the various boiler sections over a wide capacity range of the boiler.

  12. Execution Version POWER PURCHASE AGREEMENT

    E-Print Network [OSTI]

    Firestone, Jeremy

    ") and BLUEWATER WIND DELAWARE LLC ("Seller") June 23, 2008 #12;Execution Version POWER PURCHASE AGREEMENT TableExecution Version POWER PURCHASE AGREEMENT between DELMARVA POWER & LIGHT COMPANY ("Buyer 3.5 Energy Forecasts, Scheduling and Balancing.......................................... 40 3

  13. Delmarva Power - Green Energy Program Incentives | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China U.S.Contamination ControlDecisions regarding how to secure andinofIndustrial Local

  14. SMITH AND BARGHNONCONSCIOUS EFFECTS OF POWER NONCONSCIOUS EFFECTS OF POWER

    E-Print Network [OSTI]

    Bargh, John A.

    SMITH AND BARGHNONCONSCIOUS EFFECTS OF POWER NONCONSCIOUS EFFECTS OF POWER ON BASIC APPROACH to the approach/inhibition theory of power (Keltner, Gruenfeld, & Anderson, 2003), having power should be associated with the approach system, and lacking power with the avoidance system. However

  15. Background information for RACT determination of NOx emissions from Maryland power plants. Part 1. Boilers. Technical report

    SciTech Connect (OSTI)

    Borkowicz, R.J.

    1993-10-01T23:59:59.000Z

    The purpose of the report is to provide an evaluation of potential NOx control technologies for utility boilers in the State of Maryland. The boilers discussed are owned and operated by Baltimore Gas Electric Company (BG E), Potomac Electric Power Company (PEPCO), Delmarva Power and Light (DP L), and Allegheny Power. The paper focuses on available technologies, costs, achievable NOx reductions, unique characteristics of specific units, and strategies for achieving low NOx emissions.

  16. Hanford Solar Power: Cost Effective and Mobile | Department of...

    Office of Environmental Management (EM)

    Solar Power: Cost Effective and Mobile Hanford Solar Power: Cost Effective and Mobile February 26, 2014 - 12:00pm Addthis EMs Richland Operations Office and its contractors...

  17. Impact of Wind Shear and Tower Shadow Effects on Power System with Large Scale Wind Power

    E-Print Network [OSTI]

    Hu, Weihao

    Impact of Wind Shear and Tower Shadow Effects on Power System with Large Scale Wind Power to wind speed variations, the wind shear and the tower shadow effects. The fluctuating power may be ableSILENT/PowerFactory. In this paper, the impacts of wind shear and tower shadow effects on the small signal stability of power systems

  18. TO APPEAR IN IEEE TRANSACTION ON POWER SYSTEMS 1 Effect of Reactive Power Limit Modeling on

    E-Print Network [OSTI]

    Cañizares, Claudio A.

    TO APPEAR IN IEEE TRANSACTION ON POWER SYSTEMS 1 Effect of Reactive Power Limit Modeling on Maximum System Loading and Active and Reactive Power Markets Behnam Tamimi, Student Member, IEEE, Claudio A. Ca- active power in electric power systems. Although there are other important reactive power sources

  19. Evaluating the Effectiveness of Model-Based Power Characterization

    E-Print Network [OSTI]

    Snoeren, Alex

    a model of the system that describes power consump- tion in terms of power states and attributing in measured power draw. Previous work on power modeling has focused on modeling total system power consumptionEvaluating the Effectiveness of Model-Based Power Characterization John C. McCullough, Yuvraj

  20. Achieving Cost-Effective Power Grid Hardening through ...

    E-Print Network [OSTI]

    2014-12-31T23:59:59.000Z

    Abstract—Vulnerability of power grid is a critical issue in power industry. ... control) is an effective operation to mitigate outages or attacks. In this paper, we ...

  1. Effect of Large Dynamic Loads on Interconnected Power Systems with Power Oscillation Damping

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    Effect of Large Dynamic Loads on Interconnected Power Systems with Power Oscillation Damping.hossain and H.Pota)@adfa.edu.au Abstract--Power systems are composed of dynamic loads. In this paper presents an analysis to investigate the effects of large dynamic loads on interconnected power systems

  2. Radiological Assessment of effects from Fukushima Daiichi Nuclear Power Plant

    Broader source: Energy.gov [DOE]

    NNSA presentation on Radiological Assessment of effects from Fukushima Daiichi Nuclear Power Plant from May 13, 2011

  3. Combined Heat and Power (CHP): Essential for a Cost Effective...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    for a Cost Effective Clean Energy Standard, April 2011 Combined Heat and Power (CHP): Essential for a Cost Effective Clean Energy Standard, April 2011 In March 2011, a...

  4. Wind Power Variability, Its Cost, and Effect on Power Plant Emissions

    E-Print Network [OSTI]

    Wind Power Variability, Its Cost, and Effect on Power Plant Emissions A Dissertation Submitted The recent growth in wind power is transforming the operation of electricity systems by introducing. As a result, system operators are learning in real-time how to incorporate wind power and its variability

  5. Effect of Mobility on Power Control and System Capacity

    E-Print Network [OSTI]

    Kumar, Anurag

    Effect of Mobility on Power Control and System Capacity in CDMA Cellular Wireless Networks Munish control, admission control and user mobility. We compare two methods for power control: Constant Re­ ceived Power Control (CRPC) in which the total power received at each base station (BS) is kept constant

  6. Power Compensation Effect of an Adjustable-Speed Rotary Condenser with a Flywheel for a Large Capacity Magnet Power Supply

    E-Print Network [OSTI]

    Akagi, H

    1999-01-01T23:59:59.000Z

    Power Compensation Effect of an Adjustable-Speed Rotary Condenser with a Flywheel for a Large Capacity Magnet Power Supply

  7. Nuclear power and its environmental effects

    SciTech Connect (OSTI)

    Glasstone, S.; Jordan, W.H.

    1980-01-01T23:59:59.000Z

    The authors, veterans in the field of nuclear technology, attempt in this book to present the complexities of nuclear energy issues for the general public. Their coverage of the subject is very thorough, starting with the fundamentals of nuclear reactors and of electrical power generation and continuing into such environmental problem areas as the biological effects of radiation, radioactive waste management, diposal of waste heat, and transportation of nuclear materials. Generally, they reflect the optimism of the pro-nuclear establishment, to which their publisher belongs. However, their tone is calm and nonpolemical, and even antinuclear advocates should find the volume to be a handy compilation of many basic facts. Recommended for public and academic libraries.

  8. 2008 WIND TECHNOLOGIES MARKET REPORT

    E-Print Network [OSTI]

    Bolinger, Mark

    2010-01-01T23:59:59.000Z

    States. Specifically, Bluewater Wind and Delmarva PowerLLC Babcock & Brown Acquisition Bluewater Wind Good Energies

  9. Environmental Effects on Power Electronic Devices

    Broader source: Energy.gov (indexed) [DOE]

    the complex relationship between environment (temperature, humidity, and vibration) and automotive power electronic device (PED) performance through materials characterization...

  10. EFFECT OF PITCH CONTROL AND POWER CONDITIONING ON POWER QUALITY OF VARIABLE SPEED WIND TURBINE GENERATORS

    E-Print Network [OSTI]

    EFFECT OF PITCH CONTROL AND POWER CONDITIONING ON POWER QUALITY OF VARIABLE SPEED WIND TURBINE), Curtin University of Technology, WA Abstract: Variable speed wind turbine generators provide the opportunity to capture more power than fixed speed turbines. However the variable speed machine output can

  11. Data:B49efb5b-a721-4dfc-8272-a5d20d4f3d95 | Open Energy Information

    Open Energy Info (EERE)

    Power Effective date: 20140601 End date if known: Rate name: "SGS-ND" & "MGS-S" Water Heating (Bundled) Sector: Description: Source or reference: http:www.delmarva.com...

  12. Data:1fa18f02-399d-4975-b0d8-c1c3413f5c30 | Open Energy Information

    Open Energy Info (EERE)

    Power Effective date: 20140601 End date if known: Rate name: "SGS-ND" & "MGS-S" Water Heating (UnBundled) Sector: Description: Source or reference: http:www.delmarva.com...

  13. Data:Be9ba20b-46dd-492c-9b1f-8e1d4f72c748 | Open Energy Information

    Open Energy Info (EERE)

    Power Effective date: 20140601 End date if known: Rate name: "SGS-ND" & "MGS-S" Space Heating (UnBundled) Sector: Description: Source or reference: http:www.delmarva.com...

  14. A Model of Absolute Autonomy and Power: Toward Group Effects

    E-Print Network [OSTI]

    Hexmoor, Henry

    575 2420 fax:479 575 5339 Abstract. We present a model of absolute autonomy and power in agent systems present a model that approximates absolute autonomy and power in agent systems. This absolute sense1 A Model of Absolute Autonomy and Power: Toward Group Effects HENRY HEXMOOR Computer Science

  15. Effective dark matter power spectra in $f(R)$ gravity

    E-Print Network [OSTI]

    He, Jian-hua; Hawken, Adam J

    2015-01-01T23:59:59.000Z

    Using N-body simulations, we measure the power spectrum of the effective dark matter density field, which is defined through the modified Poisson equation in $f(R)$ cosmologies. We find that when compared to the conventional dark matter power spectrum, the effective power spectrum deviates more significantly from the $\\Lambda$CDM model. For models with $f_{R0}=-10^{-4}$, the deviation can exceed 150\\% while the deviation of the conventional matter power spectrum is less than 50\\%. Even for models with $f_{R0}=-10^{-6}$, for which the conventional matter power spectrum is very close to the $\\Lambda$CDM prediction, the effective power spectrum shows sizeable deviations. Our results indicate that traditional analyses based on the dark matter density field may seriously underestimate the impact of $f(R)$ gravity on galaxy clustering. We therefore suggest the use of the effective density field in such studies.

  16. RF breakdown effects in microwave power amplifiers

    E-Print Network [OSTI]

    Arumilli, Gautham Venkat

    2007-01-01T23:59:59.000Z

    Electrical stresses in the transistors of high-efficiency switching power amplifiers can lead to hot-electron-induced "breakdown" in these devices. This thesis explores issues related to breakdown in the Transcom TC2571 ...

  17. TRANSMISSION EFFECTS IN MARKET POWER ANALYSIS OF ELECTRICITY MARKETS

    E-Print Network [OSTI]

    Gross, George

    TRANSMISSION EFFECTS IN MARKET POWER ANALYSIS OF ELECTRICITY MARKETS Thomas J. Overbye George Gross-weber@uiuc.edu Department of Electrical and Computer Engineering University of Illinois at Urbana-Champaign Urbana, IL 61801 ABSTRACT This paper discusses the assessment of market power in bulk electricity markets, with the explicit

  18. Stability effects of frequency controllers and transmission line configurations on power systems with integration of wind power

    E-Print Network [OSTI]

    Abdelhalim, Hussein Mohamed

    2012-01-01T23:59:59.000Z

    This thesis investigates the stability effects of the integration of wind power on multi-machine power systems. First, the small-signal stability effects of turbine governors connected to synchronous generators in the ...

  19. Winter study of power plant effects

    SciTech Connect (OSTI)

    Patrinos, A.A.N.

    1980-10-01T23:59:59.000Z

    As a part of DOE's Meteorological Effects of Thermal Energy Releases (METER) program a field study was undertaken at the Bowen Electric Generating Plant (Plant Bowen) in December 1979. The study was a joint endeavor of Battelle Pacific Northwest Laboratories (PNL), Pennsylvania State University (PSU), and Oak Ridge National Laboratory (ORNL) with the main objective of determining the effects of the plant's smokestack effluents on aerosol characteristics and precipitation chemistry. Other objectives included studies of cooling tower temperature and humidity (T/h) plumes and drift drop concentrations. Conducted over a period of three weeks, the study involved an instrumented aircraft, pilot balloons, a tethered balloon system, a dense network of wetfall chemistry collectors and numerous ground- and tower-based meteorological instruments. Rainfall samples collected during the precipitation event of December 13, 1979, revealed some evidence of plume washout. The tethered balloon flights rarely detected the faint presence of the T/h plumes while the airborne measurements program concentrated on the study of SO/sub 2/ to sulfate conversion. A series of plume observations confirmed the suitability of the plant's windset for plume direction determinations.

  20. Effects of pulsed-power loads upon an electric power grid

    SciTech Connect (OSTI)

    Smolleck, H.A.; Ranade, S.J.; Prasad, N.R. (New Mexico State Univ., Las Cruces, NM (USA). Dept. of Electrical and Computer Engineering); Velasco, R.O. (Los Alamos National Lab., NM (USA))

    1990-01-01T23:59:59.000Z

    Certain proposed particle-accelerator and laser experiments, and other devices related to fusion research, require multi-megawatt, repetitive power pulses, often at low (subsynchronous) frequency. While some power-delivery technologies call for a certain degree of buffering of the utility demand using capacitive, inductive, or inertial energy storage, considerations have also been made for serving such loads directly from the line. In either case, such pulsed loads represent non-traditional applications from the utility's perspective which, in certain cases, can have significant design and operational implications. This paper outlines an approach to the analysis of the effects of such loads upon the electric power grid using existing analysis techniques. The impacts studied include busvoltage flicker, transient and dynamic stability, and torsional excitation. The impact of a particular pulsed load is examined and illustrated for the power network serving the Los Alamos National Laboratory. 19 refs., 13 figs.

  1. POWER LEVEL EFFECT IN A PWR ROD EJECTION ACCIDENT.

    SciTech Connect (OSTI)

    DIAMOND,D.J.; BROMLEY,B.P.; ARONSON,A.L.

    2002-10-07T23:59:59.000Z

    The purpose of this study is to determine the effect of the initial power level during a rod ejection accident (REA) on the ejected rod worth and the resulting energy deposition in the fuel. The model used is for the hot zero power (HZP) conditions at the end of a typical fuel cycle for the Three Mile Island Unit 1 pressurized water reactor. PARCS, a transient, three-dimensional, two-group neutron nodal diffusion code, coupled with its own thermal-hydraulics model, is used to perform both steady-state and transient simulations. The worth of an ejected control rod is affected by both power level, and the positions of control banks. As the power level is increased, the worth of a single central control rod tends to drop due to thermal-hydraulic feedback and control bank removal, both of which flatten the radial neutron flux and power distributions. Although the peak fuel pellet enthalpy rise during an REA will be greater for a given ejected rod worth at elevated initial power levels, it is more likely the HZP condition will cause a greater net energy deposition because an ejected rod will have the highest worth at HZP. Thus, the HZP condition can be considered the most conservative in a safety evaluation.

  2. Efficient solar cooling: first ever non-tracking solar collectors powering a double effect absorption chiller

    E-Print Network [OSTI]

    Poiry, Heather Marie

    2011-01-01T23:59:59.000Z

    Cooling: First Ever Non-tracking solar collectors powering aCooling: First Ever Non-tracking solar collectors powering athe first ever non-tracking solar powered double effect

  3. Higher derivatives and power spectrum in effective single field inflation

    E-Print Network [OSTI]

    Jinn-Ouk Gong; Min-Seok Seo; Spyros Sypsas

    2015-03-10T23:59:59.000Z

    We study next-to-leading corrections to the effective action of the curvature perturbation obtained by integrating out the coupled heavy isocurvature perturbation. These corrections result from including higher order derivative operators, weighted by the mass scale of the heavy physics, in the effective theory expansion. We find that the correction terms are suppressed by the ratio of the Hubble parameter to the heavy mass scale. The corresponding corrections to the power spectrum of the curvature perturbation are presented for a simple illustrative example.

  4. Optimization Online - Achieving Cost-Effective Power Grid ...

    E-Print Network [OSTI]

    Wei Yuan

    2014-12-29T23:59:59.000Z

    Dec 29, 2014 ... Abstract: Vulnerability of power grid is a critical issue in power industry. In order to understand and reduce power grid vulnerability under ...

  5. Nanoscale Triboelectric-Effect-Enabled Energy Conversion for Sustainably Powering Portable Electronics

    E-Print Network [OSTI]

    Wang, Zhong L.

    Nanoscale Triboelectric-Effect-Enabled Energy Conversion for Sustainably Powering Portable: Harvesting energy from our living environment is an effective approach for sustainable, maintenance-free, and green power source for wireless, portable, or implanted electronics. Mechanical energy scavenging based

  6. Simulation of the Visual Effects of Power Plant Plumes1

    E-Print Network [OSTI]

    Standiford, Richard B.

    -fired power plant with six 500 MW coal-fired power plants located at hypothetical sites in southeastern Utah coal-fired power plants are greater than those from oil or natural gas. If we must use more coal, how in a comparison of large and small coal-fired power plants in the West. Using hypothetical power plants

  7. Power Control in Random Networks: The Effect of Disorder in User Positions

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Power Control in Random Networks: The Effect of Disorder in User Positions Aris L. Moustakas Transmitted power is an important resource in wireless networks and therefore power control has been crucial since the development of legacy networks. For example, the intro- duction of efficient power control

  8. High-Level Power Estimation with Interconnect Effects Kavel M. Buyuksahin

    E-Print Network [OSTI]

    Najm, Farid N.

    the predicted (at RTL) power against that measured using SPICE. An average er- ror of 14.4% is obtainedHigh-Level Power Estimation with Interconnect Effects Kavel M. B¨uy¨uks¸ahin ECE Dept.najm@toronto.edu ABSTRACT We extend earlier work on high-level average power esti- mation to include the power due

  9. Effect of a nonlinear power take off on a wave energy converter 

    E-Print Network [OSTI]

    Bailey, Helen Louise

    2011-11-22T23:59:59.000Z

    This thesis is titled The influence of a nonlinear Power Take Off on a Wave Energy Converter. It looks at the effect that having a nonlinear Power Take Off (PTO) has on an inertial referenced, slack moored, point absorber, ...

  10. Lab Tests Demonstrate Effectiveness of Advanced Power Strips (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-09-01T23:59:59.000Z

    NREL engineers evaluate the functionalities of advanced power strips and help consumers choose the right one for their plug loads.

  11. DETERMINATION OF PHOTOVOLTAIC EFFECTIVE CAPACITY FOR Richard Perez for Clean Power Research

    E-Print Network [OSTI]

    Perez, Richard R.

    DETERMINATION OF PHOTOVOLTAIC EFFECTIVE CAPACITY FOR NEW JERSEY Richard Perez for Clean Power) requirements. #12;DETERMINATION OF PHOTOVOLTAIC EFFECTIVE CAPACITY FOR NEW JERSEY The ELCC metric dispatchable power plant. 2 #12;DETERMINATION OF PHOTOVOLTAIC EFFECTIVE CAPACITY FOR NEW JERSEY 0 1 2 3 4 5 6 7

  12. Loops and Power Counting in the High Density Effective Field Theory

    E-Print Network [OSTI]

    Thomas Schaefer

    2003-10-15T23:59:59.000Z

    We introduce the high density effective theory of QCD. We discuss, in particular, the problem of developing a consistent power counting scheme.

  13. Power and Effective Study Size Based on Approximations to the Expected Likelihood Ratio

    E-Print Network [OSTI]

    Washington at Seattle, University of

    Power and Effective Study Size Based on Approximations to the Expected Likelihood Ratio Test statistical power and precision of heritability estimates can be difficult particularly in complex pedigrees. Previous work focused on the power to detect heritability by using the expectation of the likelihood ratio

  14. Stresa, Italy, 26-28 April 2006 SCALING EFFECTS FOR ELECTROMAGNETIC VIBRATIONAL POWER

    E-Print Network [OSTI]

    Boyer, Edmond

    and structure of these generators have varied and various different power levels have been produced. However of power to wireless sensor systems. In such systems size is an important consideration and it is generallyStresa, Italy, 26-28 April 2006 SCALING EFFECTS FOR ELECTROMAGNETIC VIBRATIONAL POWER GENERATORS

  15. The Effect of the 802.11 Power Save Mechanism (PSM) on Energy Efficiency and Performance

    E-Print Network [OSTI]

    Bhatti, Saleem N.

    The Effect of the 802.11 Power Save Mechanism (PSM) on Energy Efficiency and Performance During is the increased energy usage of ICT, for reasons of cost and environmental protection. The Power Save Mode (PSM and office environments. Power save mecha- nisms that exist in the variants of the IEEE 802.11 WLAN standards

  16. The Effects of CO2 Abatement Policies on Power System Expansion

    E-Print Network [OSTI]

    Victoria, University of

    The Effects of CO2 Abatement Policies on Power System Expansion by Conrad Fox B.Sc.E., Queens power systems in terms of both cost and efficacy. A model is developed to approximate the yearly changes in generation capacity and electricity supply mixture of a power system subject to the constraints of carbon

  17. Mitigation of magnetohydrodynamic electromagnetic pulse (MHD-EMP) effects from commerical electric power systems. Power Systems Technology Program

    SciTech Connect (OSTI)

    Barnes, P.R. [Oak Ridge National Lab., TN (United States); Tesche, F.M. [Tesche (F.M.), Dallas, TX (United States); Vance, E.F. [Vance (E.F.), Fort Worth, TX (United States)

    1992-03-01T23:59:59.000Z

    A large nuclear detonation at altitudes of several hundred kilometers above the earth distorts the earth`s magnetic field and produces a strong magnetohydrodynamic electromagnetic pulse (MHD-EMP). This can adversely affect electrical power systems. In this report, the effects of this nuclear environment on critical facilities connected to the commercial power system are considered. Methods of mitigating the MHD-EMP impacts are investigated, and recommended protection schemes are presented. Guidelines for testing facilities to determine the effects of MHD-EMP and to validate the mitigation methods also are discussed.

  18. HighLevel Power Estimation with Interconnect Effects # Kavel M. B

    E-Print Network [OSTI]

    Najm, Farid N.

    ) power against that measured using SPICE. An average er­ ror of 14.4% is obtained for the averageHigh­Level Power Estimation with Interconnect Effects # Kavel M. B Ë? uy Ë? uksâ?ºahin ECE Dept.najm@toronto.edu ABSTRACT We extend earlier work on high­level average power esti­ mation to include the power due

  19. 2008 WIND TECHNOLOGIES MARKET REPORT

    E-Print Network [OSTI]

    Bolinger, Mark

    2010-01-01T23:59:59.000Z

    publicly owned utility power purchase agreement Productioncolumn) represents MSR’s power purchase agreement with theDelmarva Power signed a power purchase agreement to bring

  20. Effective Capacitance of RLC Loads for Estimating Short-Circuit Power

    E-Print Network [OSTI]

    Friedman, Eby G.

    behavior of the short-circuit current. In [1], Veendrick developed a closed form expression for shortEffective Capacitance of RLC Loads for Estimating Short-Circuit Power Guoqing Chen and Eby G for estimating short-circuit power is presented in this paper. Both resistive and inductive shielding effects

  1. Thermal Effects on Inverted Pendulum Thrust Stands for Steady-state High-power Plasma Thrusters

    E-Print Network [OSTI]

    Choueiri, Edgar

    Thermal Effects on Inverted Pendulum Thrust Stands for Steady-state High-power Plasma Thrusters A, 2003 Abstract Thermal effects on direct measurements of the thrust produced by steady-state, high-power. Associate Fellow, AIAA. §Presented at the 39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference, 20-23rd

  2. Modeling the Effect of Hurricanes on Power Distribution Systems

    E-Print Network [OSTI]

    Chanda, Suraj

    2012-10-19T23:59:59.000Z

    : : : : : : : : : : : : : : : : : 9 III Conductor sizing in Micropolis : : : : : : : : : : : : : : : : : : : : : 24 IV Sequence impedance and capacitance values for three phase single circuit overhead lines : : : : : : : : : : : : : : : : : : : : : : : : : : : 28 V Resistance... : : : : : : : : 19 8 Fragility curve showing number of industries losing power for a given wind speed in the absence of routing : : : : : : : : : : : : : : : 20 9 Three phase single circuit overhead line conductor con guration : : : 25 10 Single phase overhead...

  3. Effects of Price-Responsive Residential Demand on Retail and Wholesale Power Market Operations

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    1 Effects of Price-Responsive Residential Demand on Retail and Wholesale Power Market Operations/C) on integrated retail and wholesale power market operations. The physical operations of the A/C sys- tem at wholesale conditional on A/C load, and the retail energy prices offered to residential A/C consumers

  4. Effects of Confinement and Orientation on the Thermoelectric Power Factor of Silicon Nanowires

    E-Print Network [OSTI]

    1 Effects of Confinement and Orientation on the Thermoelectric Power Factor of Silicon Nanowires dimensionality can improve the thermoelectric (TE) power factor of a device, offering an enhancement of the ZT analysis of the thermoelectric coefficients of n-type and p-type NWs of diameters from 12nm down to 3nm

  5. Detection of Impulsive Effects in Switched DAEs with Applications to Power Electronics Reliability Analysis

    E-Print Network [OSTI]

    Trenn, Stephan

    Detection of Impulsive Effects in Switched DAEs with Applications to Power Electronics Reliability-tolerant power electronics systems to identify design flaws that could jeopardize its reliability. The system electronics system, key elements to achieving fault tolerance are: component redundancy, a fault diagnosis

  6. THE EFFECT OF RADIATIVE COOLING THE SUNYAEVZELDOVICH CLUSTER COUNTS AND ANGULAR POWER SPECTRA: ANALYTIC TREATMENT

    E-Print Network [OSTI]

    Boehringer, Hans

    , strength of thermal signals is directly proportional thermal energy of confined clusters. Unlike darkTHE EFFECT OF RADIATIVE COOLING THE SUNYAEV­ZELDOVICH CLUSTER COUNTS AND ANGULAR POWER SPECTRA­Zeldovich (SZ) cluster counts and power spectra. It appears that analytic results good agreement with those

  7. The Combined Effect of Process Variations and Power Supply Noise on Clock Skew and Jitter

    E-Print Network [OSTI]

    De Micheli, Giovanni

    The Combined Effect of Process Variations and Power Supply Noise on Clock Skew and Jitter Hu Xu and power supply noise on clock skew and jitter is investigated in this paper. A statistical model of skitter, which consists of skew and jitter, is proposed. Clock paths with different buffer insertion

  8. BIOLOGICAL EFFECTS ON HARD CLAMS OF HAND RAKING AND POWER DREDGING

    E-Print Network [OSTI]

    BIOLOGICAL EFFECTS ON HARD CLAMS OF HAND RAKING AND POWER DREDGING Marine Biobgical Laboratory DEC7 ........ Bullraking operations ............. Dredging operations .............. Underwater photography in relation to available population for bullraking and dredging (Figure 7) · · 32 Appendix "C

  9. Harmonic effects of solar geomagnetically induced currents on the electrical distribution system in nuclear power plants

    SciTech Connect (OSTI)

    Carroll, D.P. [Florida Univ., Gainesville, FL (United States); Kasturi, S. [MOS, Inc., Melville, NY (United States); Subudhi, M.; Gunther, W. [Brookhaven National Lab., Upton, NY (United States)

    1992-12-31T23:59:59.000Z

    Most previous analysis on the effects of geomagnetically induced currents (GIC) on electric utility systems has steady-state phenomena, with the main interest in the generator step-up transformer and the off-site power system. This paper begins to investigate the possible effects that a GIC event might have on the power plant itself, by examining the harmonic distortion that could exist at various voltage levels in the on-site distribution system.

  10. Harmonic effects of solar geomagnetically induced currents on the electrical distribution system in nuclear power plants

    SciTech Connect (OSTI)

    Carroll, D.P. (Florida Univ., Gainesville, FL (United States)); Kasturi, S. (MOS, Inc., Melville, NY (United States)); Subudhi, M.; Gunther, W. (Brookhaven National Lab., Upton, NY (United States))

    1992-01-01T23:59:59.000Z

    Most previous analysis on the effects of geomagnetically induced currents (GIC) on electric utility systems has steady-state phenomena, with the main interest in the generator step-up transformer and the off-site power system. This paper begins to investigate the possible effects that a GIC event might have on the power plant itself, by examining the harmonic distortion that could exist at various voltage levels in the on-site distribution system.

  11. Detection of nanosecond-scale, high power THz pulses with a field effect transistor

    SciTech Connect (OSTI)

    Preu, S. [Physics Department and Institute for Terahertz Science and Technology, University of California, Santa Barbara, California 93106 (United States); Materials Department, University of California, Santa Barbara, California 93106 (United States); Chair for Applied Physics, University of Erlangen-Nuremberg, 91058 Erlangen (Germany); Lu, H.; Gossard, A. C. [Materials Department, University of California, Santa Barbara, California 93106 (United States); Sherwin, M. S. [Physics Department and Institute for Terahertz Science and Technology, University of California, Santa Barbara, California 93106 (United States)

    2012-05-15T23:59:59.000Z

    We demonstrate detection and resolution of high power, 34 ns free electron laser pulses using a rectifying field effect transistor. The detector remains linear up to an input power of 11 {+-} 0.5 W at a pulse energy of 20 {+-} 1 {mu}J at 240 GHz. We compare its performance to a protected Schottky diode, finding a shorter intrinsic time constant. The damage threshold is estimated to be a few 100 W. The detector is, therefore, well-suited for characterizing high power THz pulses. We further demonstrate that the same detector can be used to detect low power continuous-wave THz signals with a post detection limited noise floor of 3.1 {mu}W/{radical}(Hz). Such ultrafast, high power detectors are important tools for high power and high energy THz facilities such as free electron lasers.

  12. ITP Industrial Distributed Energy: Combined Heat and Power: Effective...

    Broader source: Energy.gov (indexed) [DOE]

    Report describing the four key areas where CHP has proven its effectiveness and holds promise for the future chpreport12-08.pdf More Documents & Publications CHP: A Clean Energy...

  13. Load controller and method to enhance effective capacity of a photovoltaic power supply

    DOE Patents [OSTI]

    Perez, Richard (Delmar, NY)

    2000-01-01T23:59:59.000Z

    A load controller and method are provided for maximizing effective capacity of a non-controllable, renewable power supply coupled to a variable electrical load also coupled to a conventional power grid. Effective capacity is enhanced by monitoring power output of the renewable supply and loading, and comparing the loading against the power output and a load adjustment threshold determined from an expected peak loading. A value for a load adjustment parameter is calculated by subtracting the renewable supply output and the load adjustment parameter from the current load. This value is then employed to control the variable load in an amount proportional to the value of the load control parameter when the parameter is within a predefined range. By so controlling the load, the effective capacity of the non-controllable, renewable power supply is increased without any attempt at operational feedback control of the renewable supply. The renewable supply may comprise, for example, a photovoltaic power supply or a wind-based power supply.

  14. A Method to Study the Effect of Renewable Resource Variability on Power System Dynamics

    E-Print Network [OSTI]

    Liberzon, Daniel

    1 A Method to Study the Effect of Renewable Resource Variability on Power System Dynamics Yu reliance on renewable resources, such as wind or solar. It is well known that the integration proposes a set-theoretic method to assess the effect of variability associated with renewable-based elec

  15. The Effect of Magnetic Field on the Performance of Low-Power Cylindrical Hall Thrusters

    E-Print Network [OSTI]

    The Effect of Magnetic Field on the Performance of Low-Power Cylindrical Hall Thrusters IEPC-2005-099 Presented at the 29th International Electric Propulsion Conference, Princeton University, October 31 for scaling down. The effect of the magnetic field on the discharge characteristics and efficiency of the low

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

    E-Print Network [OSTI]

    Liu, Liping

    2012-01-01T23:59:59.000Z

    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.

  17. Methodology to assess the effects of magnetohydrodynamic electromagnetic pulse (MHD-EMP) on power systems

    SciTech Connect (OSTI)

    Legro, J.R.; Abi-Samra, N.C.; Crouse, J.C.; Tesche, F.M.

    1985-01-01T23:59:59.000Z

    This paper summarizes a method to evaluate the possible effects of magnetohydrodynamic-electromagnetic pulse (MHD-EMP) on power systems. This method is based on the approach adapted to study the impact of geomagnetic storms on power systems. The paper highlights the similarities and differences between the two phenomena. Also presented are areas of concern which are anticipated from MHD-EMP on the overall system operation. 12 refs., 1 fig.

  18. Study of the Power Supply Ripple Effect on teh Dynamics at SPEAR

    SciTech Connect (OSTI)

    Terebilo, A.; Pellegrini, C.; /UCLA; Cornacchia, M.; Corbett, J.; Martin, D.; /SLAC

    2011-09-14T23:59:59.000Z

    For long term stability analysis time variation of tunes is important. We have proposed and tested a technique for measuring the magnitude of this variation. This was made possible by using tune extraction algorithms that require small number of turns thus giving an instantaneous tune of the machine. In this paper we demonstrate the measured effect of the tune modulation with 60 Hz power supplies ripple, power line interference from SLAC linac operating at 30 Hz repetition rate, and nonperiodic variation.

  19. Microwave power spectral density and its effects on exciting electrodeless high intensity discharge lamps

    SciTech Connect (OSTI)

    Butler, S.J.; Goss, H.H.; Lapatovich, W.P. [Osram Sylvania Inc., Salem, MA (United States)

    1995-12-31T23:59:59.000Z

    The effects of a microwave source generating a spectrally dense power spectrum on the operation of an electrodeless high intensity discharge lamp were measured. Spectrally pure sources operating within ISM bands at 915 MHz and 2.45 GHz produce stable capacitively coupled discharges useful for producing flicker-free light for numerous applications. The internal plasma temperature distribution and lamp geometry define acoustic resonance modes within the lamp which can be excited with power sidebands. The operation of lamps with commercially available power sources and custom built generators are discussed. Estimates of the spectral purity required for stable operation are provided.

  20. Mitigation of magnetohydrodynamic electromagnetic pulse (MHD-EMP) effects from commerical electric power systems

    SciTech Connect (OSTI)

    Barnes, P.R. (Oak Ridge National Lab., TN (United States)); Tesche, F.M. (Tesche (F.M.), Dallas, TX (United States)); Vance, E.F. (Vance (E.F.), Fort Worth, TX (United States))

    1992-03-01T23:59:59.000Z

    A large nuclear detonation at altitudes of several hundred kilometers above the earth distorts the earth's magnetic field and produces a strong magnetohydrodynamic electromagnetic pulse (MHD-EMP). This can adversely affect electrical power systems. In this report, the effects of this nuclear environment on critical facilities connected to the commercial power system are considered. Methods of mitigating the MHD-EMP impacts are investigated, and recommended protection schemes are presented. Guidelines for testing facilities to determine the effects of MHD-EMP and to validate the mitigation methods also are discussed.

  1. Experimental determination of the MHD-EMP effects on power distribution transformers

    SciTech Connect (OSTI)

    McConnell, B.W.; Barnes, P.R. (Oak Ridge National Lab., TN (United States)); Tesche, F.M. (Tesche (F.M.), Dallas, TX (United States))

    1991-01-01T23:59:59.000Z

    It is a well-established fact that geomagnetic storms influence electrical power transmission and distribution systems. Previous cases of such storms in the northern latitudes have resulted in occasional power disruptions, and in some cases, damage to transformers. These effects are caused by a time variation of the earth's magnetic field creating an induced electric field along the surface of the earth. This E-field acts as a voltage source along long power transmission or distribution lines, and if the line is connected to the earth at both ends, a quasi-dc current can flow. This current can cause unwanted saturation in the magnetic cores of transformers in the power system, and this, in turn produces harmonic distortion and transformer heating. This can lead to system upset (shutdown) and possibly transformer burn-out. The detonation of a high altitude nuclear explosion is also known to affect the magnetosphere, producing late-time variations of the earth's magnetic field for several hundreds of seconds. Known as the magnetohydrodynamic electromagnetic pulse (MHD-EMP), or E{sub 3}, this environment is of particular concern to electrical power systems in the event of a nuclear attack. Although the MHD-EMP induced currents can be significantly larger in magnitude, they last for a shorter period of time than do those from a geomagnetic storm. The effect of this environment compounds the adverse effects of the early-time high altitude EMP (HEMP) environment, posing a potentially serious threat to the electrical system. The present paper documents an experimental program designed to better understand the behavior of distribution-class transformers subjected to quasi-dc current excitation. Given the knowledge of the MHD-EMP-induced current flowing in a long power line, and the transformer response characteristics obtained in this program, it will be possible to make more accurate assessments of the behavior of the overall power system to EMP. 7 refs., 5 figs.

  2. EFFECTS OF THE NEUTRINO MASS SPLITTING ON THE NONLINEAR MATTER POWER SPECTRUM

    SciTech Connect (OSTI)

    Wagner, Christian; Verde, Licia; Jimenez, Raul [Institut de Ciencies del Cosmos (ICC), Universitat de Barcelona (IEEC-UB), Marti i Franques 1, E08028 Barcelona (Spain)

    2012-06-20T23:59:59.000Z

    We have performed cosmological N-body simulations which include the effect of the masses of the individual neutrino species. The simulations were aimed at studying the effect of different neutrino hierarchies on the matter power spectrum. Compared to the linear theory predictions, we find that nonlinearities enhance the effect of hierarchy on the matter power spectrum at mildly nonlinear scales. The maximum difference between the different hierarchies is about 0.5% for a sum of neutrino masses of 0.1 eV. Albeit this is a small effect, it is potentially measurable from upcoming surveys. In combination with neutrinoless double-{beta} decay experiments, this opens up the possibility of using the sky to determine if neutrinos are Majorana or Dirac fermions.

  3. THE EFFECTS OF NET ENTANGLEMENT ON THE DRAG AND POWER OUTPUT OF

    E-Print Network [OSTI]

    THE EFFECTS OF NET ENTANGLEMENT ON THE DRAG AND POWER OUTPUT OF A CALIFORNIA SEA LION, ZAWPHUS of entangled northern fur 'Scordino. J., and R. Fisher. 1983. Invelltigations on fur seal entanglement in net of plastic litter on beaches of several Alaskan islands. Using the number of net fragments found on shore

  4. Effects of applied voltages and dissolved oxygen on sustained power generation by microbial fuel cells

    E-Print Network [OSTI]

    Effects of applied voltages and dissolved oxygen on sustained power generation by microbial fuel), Faculty of Advanced Technology, University of Glamorgan, Pontypridd RCT CF37 1DL, UK Oxygen intrusion chamber MFCs at the end of a cycle when the substrate is depleted. A slight increase in dissolved oxygen

  5. Statistical Methods for Quantifying the Effect of the El NioSouthern Oscillation on Wind Power in the

    E-Print Network [OSTI]

    Katz, Richard

    Statistical Methods for Quantifying the Effect of the El Niño­Southern Oscillation on Wind Power­Southern Oscillation on Wind Power in the Northern Great Plains of the United States Bret R. Harper1, Richard W. Katz2 of the United States. In order to determine if ENSO has similar impacts on wind speed and wind power, we applied

  6. Effect of turbulent velocity on the \\HI intensity fluctuation power spectrum from spiral galaxies

    E-Print Network [OSTI]

    Dutta, Prasun

    2015-01-01T23:59:59.000Z

    We use numerical simulations to investigate effect of turbulent velocity on the power spectrum of \\HI intensity from external galaxies when (a) all emission is considered, (b) emission with velocity range smaller than the turbulent velocity dispersion is considered. We found that for case (a) the intensity fluctuation depends directly only on the power spectrum of the column density, whereas for case (b) it depends only on the turbulent velocity fluctuation. We discuss the implications of this result in real observations of \\HI fluctuations.

  7. Radial scale effect on the performance of low-power cylindrical Hall plasma thrusters

    SciTech Connect (OSTI)

    Seo, Mihui; Lee, Jongsub; Choe, Wonho [Department of Physics, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701 (Korea, Republic of)] [Department of Physics, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701 (Korea, Republic of); Seon, Jongho [School of Space Research, Kyung Hee University, 1732 Deokyoungdaero, Giheung-gu, Yongin-si, Gyeonggi-do 446-701 (Korea, Republic of)] [School of Space Research, Kyung Hee University, 1732 Deokyoungdaero, Giheung-gu, Yongin-si, Gyeonggi-do 446-701 (Korea, Republic of); June Lee, Hae [Department of Electrical Engineering, Pusan National University, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan 609-735 (Korea, Republic of)] [Department of Electrical Engineering, Pusan National University, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan 609-735 (Korea, Republic of)

    2013-09-23T23:59:59.000Z

    Investigation of the radial scale effect on low-power cylindrical Hall thrusters has been undertaken by comparing the thrusters with three different channel diameters of 28, 40, and 50 mm. The investigation found that both the anode efficiency and the thrust of the larger thruster are higher as the anode power is raised. On the other hand, higher current and propellant utilizations are achieved for the smaller thruster, which is due to higher neutral density and better electron confinement. The large plume angle of the small cylindrical Hall thruster causes thrust loss, resulting in the reduction of anode efficiency.

  8. Effect of the fast nuclear electromagnetic pulse on the electric power grid nationwide: A different view

    SciTech Connect (OSTI)

    Rabinowitz, M.

    1987-01-01T23:59:59.000Z

    This paper primarily considers the potential effects of a single high-altitude nuclear burst on the US power grid. A comparison is made between electromagnetic pulse(EMP) and natural phenomena such as lightning. This paper concludes that EMP is no more harmful to the power grid than its counterparts in nature. An upper limit of the electric field of the very fast, high-amplitude EMP is derived from first principles. The resulting values are significantly lower than the commonly presented values. Additional calculations show that the ionization produced by a nuclear burst severely attenuates the EMP. 21 refs., 2 figs., 6 tabs.

  9. Ultra-low power, Zeno effect based optical modulation in a degenerate V-system with a

    E-Print Network [OSTI]

    Shahriar, Selim

    Ultra-low power, Zeno effect based optical modulation in a degenerate V-system with a tapered nano@northwestern.edu Abstract: We demonstrate an ultra-low light level optical modulator using a tapered nano fiber embedded. For a control power of 40 nW and a signal power of 100 pW, we observe near 100% modulation. The ultra-low power

  10. Tax Credits, Rebates & Savings | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    Delmarva Power- Green Energy Program Incentives NOTE: The Green Energy Fund regulations are currently under revision to improve program function and to meet the requirements of the...

  11. Flux-weakening operation of open-end winding drive integrating a cost effective high-power charger

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Flux-weakening operation of open-end winding drive integrating a cost effective high-power charger-end winding drive integrating a cost effective high-power charger Page 1 of 26 IET Review Copy Only IET Inverter (VSI) and an open-end winding Interior Permanent Magnet Synchronous Machine (IPMSM) designed

  12. Effect of ocean surface currents on wind stress, heat flux, and wind power input to the ocean

    E-Print Network [OSTI]

    Thompson, LuAnne

    Effect of ocean surface currents on wind stress, heat flux, and wind power input to the ocean, J. T., and L. Thompson (2006), Effect of ocean surface currents on wind stress, heat flux, and wind power input to the ocean, Geophys. Res. Lett., 33, L09604, doi:10.1029/2006GL025784. 1. Introduction [2

  13. The effects of solar-geomagnetically induced currents on electrical systems in nuclear power stations

    SciTech Connect (OSTI)

    Subudhi, M. [Brookhaven National Lab., Upton, NY (United States)] [Brookhaven National Lab., Upton, NY (United States); Carroll, D.P. [Florida Univ., Gainesville, FL (United States)] [Florida Univ., Gainesville, FL (United States); Kasturi, S. [MOS, Inc., Melville, NY (United States)] [MOS, Inc., Melville, NY (United States)

    1994-01-01T23:59:59.000Z

    This report presents the results of a study to evaluate the potential effects of geomagnetically induced currents (GICs) caused by the solar disturbances on the in-plant electrical distribution system and equipment in nuclear power stations. The plant-specific electrical distribution system for a typical nuclear plant is modeled using the ElectroMagnetic Transient Program (EMTP). The computer model simulates online equipment and loads from the station transformer in the switchyard of the power station to the safety-buses at 120 volts to which all electronic devices are connected for plant monitoring. The analytical model of the plant`s electrical distribution system is studied to identify the transient effects caused by the half-cycle saturation of the station transformers due to GIC. This study provides results of the voltage harmonics levels that have been noted at various electrical buses inside the plant. The emergency circuits appear to be more susceptible to high harmonics due to the normally light load conditions. In addition to steady-state analysis, this model was further analyzed simulating various plant transient conditions (e.g., loss of load or large motor start-up) occurring during GIC events. Detail models of the plant`s protective relaying system employed in bus transfer application were included in this model to study the effects of the harmonic distortion of the voltage input. Potential harmonic effects on the uniterruptable power system (UPS) are qualitatively discussed as well.

  14. Gravitational quantum effects on power spectra and spectral indices with higher-order corrections

    E-Print Network [OSTI]

    Tao Zhu; Anzhong Wang; Gerald Cleaver; Klaus Kirsten; Qin Sheng

    2014-09-05T23:59:59.000Z

    The uniform asymptotic approximation method provides a powerful, systematically-improved, and error-controlled approach to construct accurate analytical approximate solutions of mode functions of perturbations of the Friedmann-Robertson-Walker universe, designed especially for the cases where the relativistic linear dispersion relation is modified after gravitational quantum effects are taken into account. These include models from string/M-Theory, loop quantum cosmology and Ho\\v{r}ava-Lifshitz quantum gravity. In this paper, we extend our previous studies of the first-order approximations to high orders for the cases where the modified dispersion relation (linear or nonlinear) has only one-turning point (or zero). We obtain the general expressions for the power spectra and spectral indices of both scalar and tensor perturbations up to the third-order, at which the error bounds are $\\lesssim 0.15\\%$. As an application of these formulas, we calculate the power spectra and spectral indices in the slow-roll inflation with a nonlinear power-law dispersion relation. To check the consistency of our formulas, we further restrict ourselves to the relativistic case, and calculate the corresponding power spectra, spectral indices and runnings to the second-order. Then, we compare our results with the ones obtained by the Green function method, and show explicitly that the results obtained by these two different methods are consistent within the allowed errors.

  15. Effect of noise on the power spectrum of passively mode-locked lasers

    SciTech Connect (OSTI)

    Eliyahu, D.; Salvatore, R.A.; Yariv, A. [California Institute of Technology, M/S 128-95, Pasadena, California 91125 (United States)

    1997-01-01T23:59:59.000Z

    We analyze the effects of noise on the power spectrum of pulse trains generated by a continuously operating passively mode-locked laser. The shape of the different harmonics of the power spectrum is calculated in the presence of correlated timing fluctuations between neighboring pulses and in the presence of amplitude fluctuations. The spectra at the different harmonics are influenced mainly by the nonstationary timing-jitter fluctuations; amplitude fluctuations slightly modify the spectral tails. Estimation of the coupling term between the longitudinal cavity modes or the effective saturable absorber coefficient is made from the timing-jitter correlation time. Experimental results from an external cavity two-section semiconductor laser are given. The results show timing-jitter fluctuations having a relaxation time much longer than the repetition period. {copyright} 1997 Optical Society of America.

  16. Semiclassical origin of anomalous shell effect for tetrahedral deformation in radial power-law potential model

    E-Print Network [OSTI]

    Ken-ichiro Arita; Yasunori Mukumoto

    2014-05-09T23:59:59.000Z

    Shell structures in single-particle energy spectra are investigated against regular tetrahedral type deformation using radial power-law potential model. Employing a natural way of shape parametrization which interpolates sphere and regular tetrahedron, we find prominent shell effects at rather large tetrahedral deformations, which bring about shell energies much larger than the cases of spherical and quadrupole type shapes. We discuss the semiclassical origin of these anomalous shell structures using periodic orbit theory.

  17. Effect of resonant microwave power on a PIG ion source. Revision

    SciTech Connect (OSTI)

    Brown, I.G.; Galvin, J.E.; Gavin, B.F.; MacGill, R.A.

    1984-08-01T23:59:59.000Z

    We have investigated the effect of applying microwave power at the electron cyclotron frequency on the characteristics of the ion beam extracted from a hot-cathode PIG ion source. No change was seen in the ion charge state distribution. A small but significant reduction in the beam noise level was seen, and it is possible that the technique may find application in situations where beam quiescence is important. 32 refs., 2 figs.

  18. Estimating the Effects of Climate Change on Federal Hydropower and Power Marketing

    SciTech Connect (OSTI)

    Sale, Michael J [ORNL; Kao, Shih-Chieh [ORNL; Uria Martinez, Rocio [ORNL; Wei, Yaxing [ORNL

    2011-01-01T23:59:59.000Z

    The U.S. Department of Energy is currently preparing an assessment of the effects of climate change on federal hydropower, as directed by Congress in Section 9505 of the Secure Water Act of 2009 (P.L. 111-11). This paper describes the assessment approach being used in a Report to Congress currently being prepared by Oak Ridge National Laboratory. The 9505 assessment will examine climate change effects on water available for hydropower operations and the future power supplies marketed from federal hydropower projects. It will also include recommendations from the Power Marketing Administrations (PMAs) on potential changes in operation or contracting practices that could address these effects and risks of climate change. Potential adaption and mitigation strategies will also be identified. Federal hydropower comprises approximately half of the U.S. hydropower portfolio. The results from the 9505 assessment will promote better understanding among federal dam owners/operators of the sensitivity of their facilities to water availability, and it will provide a basis for planning future actions that will enable adaptation to climate variability and change. The end-users of information are Congressional members, their staff, the PMAs and their customers, federal dam owners/operators, and the DOE Water Power Program.

  19. Survey of strong motion earthquake effects on thermal power plants in California with emphasis on piping systems. Volume 2, Appendices

    SciTech Connect (OSTI)

    Stevenson, J.D. [Stevenson and Associates, Cleveland, OH (United States)

    1995-11-01T23:59:59.000Z

    Volume 2 of the ``Survey of Strong Motion Earthquake Effects on Thermal Power Plants in California with Emphasis on Piping Systems`` contains Appendices which detail the detail design and seismic response of several power plants subjected to strong motion earthquakes. The particular plants considered include the Ormond Beach, Long Beach and Seal Beach, Burbank, El Centro, Glendale, Humboldt Bay, Kem Valley, Pasadena and Valley power plants. Included is a typical power plant piping specification and photographs of typical power plant piping specification and photographs of typical piping and support installations for the plants surveyed. Detailed piping support spacing data are also included.

  20. PSC Docket 06-241 Summary and review of Agency consultant's (IC's) "INTERIM REPORT ON

    E-Print Network [OSTI]

    Firestone, Jeremy

    's or the IC's prior analysis. Delmarva has opposed all long-term power purchase agreements (PPAs) and has POWER IRP IN RELATION TO RFP", submitted by Agency Consultant, 4 April 2007 These review comments power will be needed for Delmarva, due to expected load growth, and retirements of existing fossil power

  1. Environmental assessment for the satellite power system-concept development and evaluation program-microwave health and ecological effects

    SciTech Connect (OSTI)

    Not Available

    1980-11-01T23:59:59.000Z

    This report is concerned with the potential health and ecological effects of the microwave beam from the microwave power transmission system (MPTS) of the satellite power system (SPS). The report is written in the form of a detailed critical review of selected scientific articles from the published literature on the biological effects of nonionizing electromagnetic radiation, followed by an assessment of the possible effects of the SPS, based on exposure values for the reference system (US DOE and NASA, 1978).

  2. A methodology to assess the effects of high altitude electromagnetic pulse (HEMP) on electric power systems

    SciTech Connect (OSTI)

    Taylor, E.R. Jr.; Eichler, C.H.; Barnes, P.R.

    1988-01-01T23:59:59.000Z

    Nuclear electromagnetic pulse (EMP) from high altitude nuclear detonations (HEMP) has the potential to seriously disrupt electric power systems. A methodology has been developed to assess the vulnerability of electric power systems to this phenomena for any specified nuclear burst scenario. The methodology is based on a structured approach whereby the power system is broken down into subsystems, functional groups, and circuits and devices. Vulnerability (likelihood of failure) is assessed for individual equipment (circuits and devices) for each nuclear burst scenario. These effects are then evaluated for their performance impact on successively higher system levels. This forms the input for classical load flow, short circuit and transient stability studies to evaluate system stability and survivability. Applicability of the assessment methodology is not dependent on the quality of component/equipment vulnerability data. Susceptibility of power equipment to HEMP damage may be determined by established technical analysis, by intepretation of equipment design and testing standards, and by laboratory testing. This paper has been written not only for the electric utility engineer, but also for experts in EMP who may not be knowledgeable in electric utility systems. 12 refs., 11 figs., 1 tab.

  3. Health and environmental effects of coal-fired electric power plants

    SciTech Connect (OSTI)

    Morris, S.C.; Hamilton, L.D.

    1984-05-01T23:59:59.000Z

    This paper describes health and environmental impacts of coal-fired electric power plants. Effects on man, agriculture, and natural ecosystems are considered. These effects may result from direct impacts or exposures via air, water, and food chains. The paper is organized by geographical extent of effect. Occupational health impacts and local environmental effects such as noise and solid waste leachate are treated first. Then, regional effects of air pollution, including acid rain, are analyzed. Finally, potential global impacts are examined. Occupational health concerns considered include exposure to noise, dust, asbestos, mercury, and combustion products, and resulting injury and disease. Local effects considered include noise; air and water emissions of coal storage piles, solid waste operations, and cooling systems. Air pollution, once an acute local problem, is now a regional concern. Acute and chronic direct health effects are considered. Special attention is given to potential effects of radionuclides in coal and of acid rain. Finally, potential global impacts associated with carbon dioxide emissions are considered. 88 references, 9 tables.

  4. Effects of a shortened depreciation schedule on the investment costs for combined heat and power

    SciTech Connect (OSTI)

    Kranz, Nicole; Worrell, Ernst

    2001-11-15T23:59:59.000Z

    We investigate and compare several generic depreciation methods to assess the effectiveness of possible policy measures with respect to the depreciation schedules for investments in combined heat and power plants in the United States. We assess the different depreciation methods for CHP projects of various sizes (ranging from 1 MW to 100 MW). We evaluate the impact of different depreciation schedules on the tax shield, and the resulting tax savings to potential investors. We show that a shorter depreciation cycle could have a substantial impact on the cost of producing power, making cogeneration more attractive. The savings amount to approximately 6-7 percent of capital and fixed operation and maintenance costs, when changing from the current system to a 7 year depreciation scheme with switchover from declining balance to straight line depreciation. Suggestions for further research to improve the analysis are given.

  5. Revisiting a pre-inflationary radiation era and its effect on the CMB power spectrum

    E-Print Network [OSTI]

    Suratna Das; Gaurav Goswami; Jayanti Prasad; Raghavan Rangarajan

    2014-12-22T23:59:59.000Z

    We revisit the scenario where inflation is preceded by a radiation era by considering that the inflaton too could have been in thermal equilibrium early in the radiation era. Hence we take into account not only the effect of a pre-inflationary era on the inflaton mode functions but also that of a frozen thermal distribution of inflaton quanta. We initially discuss in detail the issues relevant to our scenario of a pre-inflationary radiation dominated era and then obtain the scalar power spectrum for this scenario. We find that the power spectrum is free from infrared divergences. We then use the WMAP and Planck data to determine the constraints on the inflaton comoving `temperature' and on the duration of inflation. We find that the best fit value of the duration of inflation is less than 1 e-folding more than what is required to solve cosmological problems, while only an upper bound on the inflaton temperature can be obtained.

  6. Load controller and method to enhance effective capacity of a photovoltaic power supply using a dynamically determined expected peak loading

    DOE Patents [OSTI]

    Perez, Richard

    2005-05-03T23:59:59.000Z

    A load controller and method are provided for maximizing effective capacity of a non-controllable, renewable power supply coupled to a variable electrical load also coupled to a conventional power grid. Effective capacity is enhanced by monitoring power output of the renewable supply and loading, and comparing the loading against the power output and a load adjustment threshold determined from an expected peak loading. A value for a load adjustment parameter is calculated by subtracting the renewable supply output and the load adjustment parameter from the current load. This value is then employed to control the variable load in an amount proportional to the value of the load control parameter when the parameter is within a predefined range. By so controlling the load, the effective capacity of the non-controllable, renewable power supply is increased without any attempt at operational feedback control of the renewable supply.

  7. Investigating the effective range of vacuum ultraviolet-mediated breakdown in high-power microwave metamaterials

    SciTech Connect (OSTI)

    Liu, Chien-Hao, E-mail: cliu82@wisc.edu; Neher, Joel D., E-mail: jdneher@wisc.edu; Booske, John H., E-mail: booske@engr.wisc.edu; Behdad, Nader, E-mail: behdad@wisc.edu [Department of Electrical and Computer Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706 (United States)

    2014-10-14T23:59:59.000Z

    Metamaterials and periodic structures operating under high-power excitations are susceptible to breakdown. It was recently demonstrated that a localized breakdown created in a given region of a periodic structure can facilitate breakdown in other regions of the structure where the intensity of the incident electromagnetic fields may not be high enough to cause breakdown under normal circumstances. It was also demonstrated that this phenomenon is due to the generation of vacuum ultraviolet radiation at the location of the initial discharge, which propagates to the neighboring regions (e.g., other unit cells in a periodic structure) and facilitates the generation of a discharge at a lower incident power level. In this paper, we present the results of an experimental study conducted to determine the effective range of this physical phenomenon for periodic structures that operate in air and in pure nitrogen gas at atmospheric pressure levels. It is demonstrated that when breakdown is induced in a periodic structure using a high-power pulse with a frequency of 9.382 GHz, duration of 0.8 ?s, and peak power level of 25 kW, this phenomenon is highly likely to happen in radii of approximately 16–17 mm from the location of the initial discharge under these test conditions. The results of this study are significant in designing metamaterials and periodic structures for high-power microwave applications as they suggest that a localized discharge created in such a periodic structure with a periodicity less than 16–17 mm can spread over a large surface and result in a distributed discharge.

  8. Assessment of the transmission grid of Maryland utilities and some potential consequences of retail competition

    SciTech Connect (OSTI)

    Fullenbaum, M.S.; Moore, M.K.

    1999-01-01T23:59:59.000Z

    This report evaluates the transmission systems used by the four Maryland utilities--Delmarva Power and Light Company (Delmarva), Baltimore Gas and Electric Company (BGE), Potomac Electric Power Company (PEPCO), and Allegheny Power Company (AP)--to provide a cost-effective, reliable source of power to consumers in the State. Maryland utilities use the high-voltage transmission systems in their own service territories and in utility systems in neighboring states to integrate their sources of supply to meet the demand of their customers. Transmission facilities make this possible by allowing Maryland utilities to import their share of remote generation in other states, to gain access to energy markets that reduce day-to-day generating costs, and to reduce the amount of capacity they must hold in reserve. The high-voltage system also permits Maryland utilities to purchase cost-effective energy that may be available in other nearby regions.

  9. Polarization Effects on Thermal-Induced Mode Instabilities in High Power Fiber Lasers

    E-Print Network [OSTI]

    Tao, Rumao; Wang, Xiaolin; Zhou, Pu; Liu, Zejin

    2015-01-01T23:59:59.000Z

    We present detailed studies of the effect of polarization on thermal-induced mode instability (MI) in ytterbium-doped fiber amplifiers. Based on a steady-state theoretical model, which takes both electric fields along the two principal axes into consideration, the effect of polarization effects on the gain of Stokes wave was analyzed, which shows that the polarization characteristics of the fiber laser have no impact on the threshold of MI. Experimental validation of the theoretical analysis is presented with experimental results agreeing well with the theoretical results, in which polarization-maintained and non-polarization-maintained fiber lasers with core/inner cladding diameter of 30/250um and core NA of 0.07 were employed. The MI threshold power is measured to be about 367~386W.

  10. Effects of Pipeline Complexity on SMT/CMP Power-Performance Efficiency Benjamin Lee and David Brooks

    E-Print Network [OSTI]

    Lee, Benjamin C.

    Effects of Pipeline Complexity on SMT/CMP Power-Performance Efficiency Benjamin Lee and David for the power-performance efficiency of SMT and CMP architectures, exploring fundamental trade-offs be- tween-performance simulations of several SMT and CMP architectures employing cores of varying complexity. Our analyses identify

  11. Some modifications to the design of a parabolic solar concentrator for construction in Lesotho and their effects on power production

    E-Print Network [OSTI]

    Ferreira, Toni (Toni Jolene)

    2005-01-01T23:59:59.000Z

    An experimental study was performed to test the effectiveness of design modifications terms of efficiency and power production in an existing parabolic solar concentrator. The proposed modifications included limiting the ...

  12. Large-scale optimal power flow: Effects of initialization, decoupling and discretization

    SciTech Connect (OSTI)

    Papalexopoulos, A.D.; Imparato, C.F.; Wu, F.F.

    1989-08-01T23:59:59.000Z

    The optimal power flow has entered a new era since the introduction of second-order methods. These methods have renewed hopes for its on-line application in Energy Management Systems. This paper reports on some of the results of tests of a second-order OPF method. The testing was conducted using a 1500 bus network, under a variety of loading conditions. Three issues were studied: Sensitivity of OPF solutions with respect to the starting points used in the solution; Accuracy of the active/reactive decoupled approach to OPF solution; Effects of discretization of transformer taps on the OPF solutions.

  13. Generation of high-power tunable terahertz-radiation by nonrelativistic beam-echo harmonic effect

    SciTech Connect (OSTI)

    Gong Huarong; Xu Jin; Wei Yanyu; Gong Yubin [National Key Laboratory of Science and Technology on Vacuum Electronics, School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054 (China); Travish, Gil [Department of Physics and Astronomy, University of California, Los Angeles, California 90095 (United States); Feng Jinjun [Vacuum Electronics National Laboratory, Vacuum Electronics research Institute, Beijing 100016 (China)

    2013-01-15T23:59:59.000Z

    A new type of terahertz radiation source based on the nonrelativistic electron beam-wave interaction is proposed. Here, the beam echo harmonic effect is applied to a traveling wave tube like device. The scheme is configured as a combination of a frequency multiplier and amplifier with, for instance, W-band (millimeter wave) input signals and terahertz output power. A one-dimensional model of this device shows that a 10th order harmonic-wave can be generated while other harmonic waves are suppressed. The device only requires a readily available input source (W-band), and the output frequency can be tuned continuously over a wide band.

  14. The effects of aging on the fire vulnerability of nuclear power plant components

    SciTech Connect (OSTI)

    Nowlen, S.P.

    1988-01-01T23:59:59.000Z

    Sandia National Laboratories, under the sponsorship of the US Nuclear Regulatory Commission, has initiated an effort to identify and investigate potential nuclear power plant fire safety issues associated with plant aging. The issues of potential concern, which have been identified are the effects of aging on (1) the vulnerability of electrical equipment to fire induced damage; (2) the propensity with which electrical equipment will initiate, or contribute to the severity of, fires; and (3) the integrity of passive fire protection features. Efforts in this program were initiated late in fiscal year 1988. For fiscal year 1989 efforts will focus on the investigation of the effects of aging on cable damageability and cable flammability. This paper presents the findings of a limited review of past electrical equipment fire aging research and a summary of planned activities for fiscal year 1989. 11 refs., 4 figs.

  15. Effective power-law dependence of Lyapunov exponents on the central mass in galaxies

    E-Print Network [OSTI]

    Delis, N; Kalapotharakos, C

    2015-01-01T23:59:59.000Z

    Using both numerical and analytical approaches, we demonstrate the existence of an effective power-law relation $L\\propto m^p$ between the mean Lyapunov exponent $L$ of stellar orbits chaotically scattered by a supermassive black hole in the center of a galaxy and the mass parameter $m$, i.e. ratio of the mass of the black hole over the mass of the galaxy. The exponent $p$ is found numerically to obtain values in the range $p \\approx 0.3$--$0.5$. We propose a theoretical interpretation of these exponents, based on estimates of local `stretching numbers', i.e. local Lyapunov exponents at successive transits of the orbits through the black hole's sphere of influence. We thus predict $p=2/3-q$ with $q\\approx 0.1$--$0.2$. Our basic model refers to elliptical galaxy models with a central core. However, we find numerically that an effective power law scaling of $L$ with $m$ holds also in models with central cusp, beyond a mass scale up to which chaos is dominated by the influence of the cusp itself. We finally show...

  16. Efficient solar cooling: first ever non-tracking solar collectors powering a double effect absorption chiller

    E-Print Network [OSTI]

    Poiry, Heather Marie

    2011-01-01T23:59:59.000Z

    to buffer the incoming solar power to the glycol loop so asarea the available power to the solar thermal collector was

  17. The effects of stress on nuclear power plant operational decision making and training approaches to reduce stress effects

    SciTech Connect (OSTI)

    Mumaw, R.J.

    1994-08-01T23:59:59.000Z

    Operational personnel may be exposed to significant levels of stress during unexpected changes in plant state an plant emergencies. The decision making that identifies operational actions, which is strongly determined by procedures, may be affected by stress, and performance may be impaired. ER report analyzes potential effects of stress in nuclear power plant (NPP) settings, especially in the context of severe accident management (SAM). First, potential sources of stress in the NPP setting are identified. This analysis is followed by a review of the ways in which stress is likely to affect performance, with an emphasis on performance of cognitive skills that are linked to operational decision making. Finally, potential training approaches for reducing or eliminating stress effects are identified. Several training approaches have the potential to eliminate or mitigate stress effects on cognitive skill performance. First, the use of simulated events for training can reduce the novelty and uncertainty that can lead to stress and performance impairments. Second, training to make cognitive processing more efficient and less reliant on attention and memory resources can offset the reductions in these resources that occur under stressful conditions. Third, training that targets crew communications skills can reduce the likelihood that communications will fail under stress.

  18. Effect of Detailed Power System Models in Traditional and Voltage Stability Constrained

    E-Print Network [OSTI]

    Cañizares, Claudio A.

    problems to improve the accuracy of the results. It is shown in [2] that reactive power limits play], [9], [10], it is demonstrated that reactive power limits play a significant role in voltage collapse of power systems. Therefore, particular attention is placed here to the modeling of reactive power limits

  19. Power LCAT

    ScienceCinema (OSTI)

    Drennen, Thomas

    2014-06-27T23:59:59.000Z

    POWER LCAT is a software tool used to compare elements of efficiency, cost, and environmental effects between different sources of energy.

  20. Power LCAT

    SciTech Connect (OSTI)

    Drennen, Thomas

    2012-08-15T23:59:59.000Z

    POWER LCAT is a software tool used to compare elements of efficiency, cost, and environmental effects between different sources of energy.

  1. Effects of turbulence on power generation for variable-speed wind turbines

    SciTech Connect (OSTI)

    Muljadi, E.; Butterfield, C.P.; Buhl, M.L. Jr.

    1996-11-01T23:59:59.000Z

    One of the primary advantages of variable-speed wind turbines over fixed-speed turbines should be improved aerodynamic efficiency. With variable-speed generation, in order to maintain a constant ratio of wind speed to tip speed, the wind turbine changes rotor speed as the wind speed changes. In this paper we compare a stall-controlled, variable-speed wind turbine to a fixed-speed turbine. The focus of this paper is to investigate the effects of variable speed on energy capture and its ability to control peak power. We also show the impact of turbulence on energy capture in moderate winds. In this report, we use a dynamic simulator to apply different winds to a wind turbine model. This model incorporates typical inertial and aerodynamic performance characteristics. From this study we found a control strategy that makes it possible to operate a stall-controlled turbine using variable speed to optimize energy capture and to control peak power. We also found that turbulence does not have a significant impact on energy capture.

  2. Turbulence at Hydroelectric Power Plants and its Potential Effects on Fish.

    SciTech Connect (OSTI)

    Cada, Glenn F.; Odeh, Mufeed

    2001-01-01T23:59:59.000Z

    The fundamental influence of fluid dynamics on aquatic organisms is receiving increasing attention among aquatic ecologists. For example, the importance of turbulence to ocean plankton has long been a subject of investigation (Peters and Redondo 1997). More recently, studies have begun to emerge that explicitly consider the effects of shear and turbulence on freshwater invertebrates (Statzner et al. 1988; Hart et al. 1996) and fishes (Pavlov et al. 1994, 1995). Hydraulic shear stress and turbulence are interdependent natural fluid phenomena that are important to fish, and consequently it is important to develop an understanding of how fish sense, react to, and perhaps utilize these phenomena under normal river flows. The appropriate reaction to turbulence may promote movement of migratory fish or prevent displacement of resident fish. It has been suggested that one of the adverse effects of flow regulation by hydroelectric projects is the reduction of normal turbulence, particularly in the headwaters of reservoirs, which can lead to disorientation and slowing of migration (Williams et al. 1996; Coutant et al. 1997; Coutant 1998). On the other hand, greatly elevated levels of shear and turbulence may be injurious to fish; injuries can range from removal of the mucous layer on the body surface to descaling to torn opercula, popped eyes, and decapitation (Neitzel et al. 2000a,b). Damaging levels of fluid stress can occur in a variety of circumstances in both natural and man-made environments. This paper discusses the effects of shear stress and turbulence on fish, with an emphasis on potentially damaging levels in man-made environments. It defines these phenomena, describes studies that have been conducted to understand their effects, and identifies gaps in our knowledge. In particular, this report reviews the available information on the levels of turbulence that can occur within hydroelectric power plants, and the associated biological effects. The final section provides the preliminary design of an experimental apparatus that will be used to expose fish to representative levels of turbulence in the laboratory.

  3. Effect of Gas Turbine Exhaust Temperature, Stack Temperature and Ambient Temperature on Overall Efficiency of Combine Cycle Power Plant

    E-Print Network [OSTI]

    unknown authors

    Abstract—The gas turbine exhaust temperature, stack temperature and ambient temperature play a very important role during the predication of the performance of combine cycle power plant. This paper covers parametric analysis of effects of gas turbine exhaust temperature, stack temperature and ambient temperature on the overall efficiency of combine cycle power plant keeping the gas turbine efficiency as well as steam turbine efficiency constant. The results shows that out of three variables i.e. turbine exhaust temperature, stack temperature and ambient temperature, the most dominating factor of increasing the overall efficiency of the combine cycle power plant is the stack temperature.

  4. The effects of energy storage properties and forecast accuracy on mitigating variability in wind power generation

    E-Print Network [OSTI]

    Jaworsky, Christina A

    2013-01-01T23:59:59.000Z

    Electricity generation from wind power is increasing worldwide. Wind power can offset traditional fossil fuel generators which is beneficial to the environment. However, wind generation is unpredictable. Wind speeds have ...

  5. Viability of an expanded United States nuclear power program and its effects on energy markets

    E-Print Network [OSTI]

    Khan, Tanzeer S

    2006-01-01T23:59:59.000Z

    The four biggest energy sources in the United States are coal, crude oil, natural gas, and nuclear power. While coal and nuclear power are produced domestically, more than 70% of crude oil and 20% of natural gas is imported. ...

  6. Analyzing the effects of component reliability on naval Integrated Power System quality of service

    E-Print Network [OSTI]

    Hawbaker, Benjamin F. (Benjamin Forrest)

    2008-01-01T23:59:59.000Z

    The Integrated Power System (IPS) is a key enabling technology for future naval vessels and their advanced weapon systems. While conventional warship designs utilize separate power systems for propulsion and shipboard ...

  7. The Effect of Power Plants on Local Housing Values and Rents: Evidence from Restricted Census Microdata

    E-Print Network [OSTI]

    Davis, Lucas W.

    2008-01-01T23:59:59.000Z

    Current trends in electricity consumption imply that hundreds of new fossil-fuel power plants will be built in the United States over the next several decades. Power plant siting has become increasingly contentious, in ...

  8. Synergistic Effects of Turbine Wakes and Atmospheric Stability on Power Production at an Onshore Wind Farm

    SciTech Connect (OSTI)

    Wharton, S; Lundquist, J K; Marjanovic, N

    2012-01-25T23:59:59.000Z

    This report examines the complex interactions between atmospheric stability and turbine-induced wakes on downwind turbine wind speed and power production at a West Coast North American multi-MW wind farm. Wakes are generated when the upwind flow field is distorted by the mechanical movement of the wind turbine blades. This has two consequences for downwind turbines: (1) the downwind turbine encounters wind flows with reduced velocity and (2) the downwind turbine encounters increased turbulence across multiple length scales via mechanical turbulence production by the upwind turbine. This increase in turbulence on top of ambient levels may increase aerodynamic fatigue loads on the blades and reduce the lifetime of turbine component parts. Furthermore, ambient atmospheric conditions, including atmospheric stability, i.e., thermal stratification in the lower boundary layer, play an important role in wake dissipation. Higher levels of ambient turbulence (i.e., a convective or unstable boundary layer) lead to higher turbulent mixing in the wake and a faster recovery in the velocity flow field downwind of a turbine. Lower levels of ambient turbulence, as in a stable boundary layer, will lead to more persistent wakes. The wake of a wind turbine can be divided into two regions: the near wake and far wake, as illustrated in Figure 1. The near wake is formed when the turbine structure alters the shape of the flow field and usually persists one rotor diameter (D) downstream. The difference between the air inside and outside of the near wake results in a shear layer. This shear layer thickens as it moves downstream and forms turbulent eddies of multiple length scales. As the wake travels downstream, it expands depending on the level of ambient turbulence and meanders (i.e., travels in non-uniform path). Schepers estimates that the wake is fully expanded at a distance of 2.25 D and the far wake region begins at 2-5 D downstream. The actual distance traveled before the wake recovers to its inflow velocity is dependent on the amount ambient turbulence, the amount of wind shear, and topographical and structural effects. The maximum velocity deficit is estimated to occur at 1-2 D but can be longer under low levels of ambient turbulence. Our understanding of turbine wakes comes from wind tunnel experiments, field experiments, numerical simulations, and from studies utilizing both experimental and modeling methods. It is well documented that downwind turbines in multi-Megawatt wind farms often produce less power than upwind turbine rows. These wake-induced power losses have been estimated from 5% to up to 40% depending on the turbine operating settings (e.g., thrust coefficient), number of turbine rows, turbine size (e.g., rotor diameter and hub-height), wind farm terrain, and atmospheric flow conditions (e.g., ambient wind speed, turbulence, and atmospheric stability). Early work by Elliott and Cadogan suggested that power data for different turbulent conditions be segregated to distinguish the effects of turbulence on wind farm power production. This may be especially important for downwind turbines within wind farms, as chaotic and turbulent wake flows increase stress on downstream turbines. Impacts of stability on turbine wakes and power production have been examined for a flat terrain, moderate size (43 turbines) wind farm in Minnesota and for an offshore, 80 turbine wind farm off the coast of Denmark. Conzemius found it difficult to distinguish wakes (i.e., downwind velocity deficits) when the atmosphere was convective as large amounts of scatter were present in the turbine nacelle wind speed data. This suggested that high levels of turbulence broke-up the wake via large buoyancy effects, which are generally on the order of 1 km in size. On the other hand, they found pronounced wake effects when the atmosphere was very stable and turbulence was either suppressed or the length scale was reduced as turbulence in this case was mechanically produced (i.e., friction forces). This led to larger reductions at downwind turbines and maximum ve

  9. STUDY OF AGING EFFECTS IN 2205 DUPLEX STAINLESS STEEL USING THERMOELECTRIC POWER MEASUREMENT

    SciTech Connect (OSTI)

    Lara, N.; Ruiz, A.; Carreon, H.; Medina, A. [NDE Group, Instituto de Investigaciones Metalurgicas, UMSNH (Mexico); Sanchez, A. [Department of Mechanical Engineering, UMSNH (Mexico)

    2010-02-22T23:59:59.000Z

    Thermoelectric power (TEP) measurements have been used as an effective method for evaluating the metallurgical state of various alloys. In the steel industry, some fabrication processes promote phase transformation and second phase precipitations which affect the material properties. Assessment of mechanical properties is critical in order to ensure quality of components. This work was conducted in order to evaluate the influence of the aging state of 2205 duplex stainless steel on TEP values. Commercial 2205 duplex steel was isothermally aged at 650 deg. C 700 deg. C and 900 deg. C at different aging times. TEP measurement technique was applied as a non destructive assessment technique to characterize the aging kinetics of the aged 2205 duplex stainless steel, hardness Rockwell (RC) and Charpy impact test were preformed to observe the effect of aging time on the specimens. Metallographic analysis was used to monitor phase transformation and sigma phase precipitation caused by the spinodal decomposition process of ferrite into secondary austenite and sigma phase. Results indicate that that the TEP is sensitive to gradual microstructural changes produced by the aging treatments.

  10. Effect of dopants on the magnetic properties of MnZn ferrites for high frequency power supplies

    SciTech Connect (OSTI)

    Znidarsic, A.; Limpel, M.; Drofenik, M. [Univ. of Ljubljana (Slovenia)] [Univ. of Ljubljana (Slovenia)

    1995-03-01T23:59:59.000Z

    The effect of additions on the magnetic properties of MnZn ferrites for high frequency power supplies was studied. The investigation revealed that various combinations of dopants added to the ferrite modify the grain boundary resistivity and the magnetic permeability spectra at constant microstructure. Particularly, the combined effect of Sn{sup 4+}, Ti{sup 4+} and Ta{sup 5+} was found to increase the grain boundary resistivity in the ferrites studied and remarkably decrease the power loss at higher frequencies.

  11. A Zonotope-Based Method for Capturing the Effect of Variable Generation on the Power Flow

    E-Print Network [OSTI]

    Liberzon, Daniel

    of a power system; this uncertainty arises from the increasing penetration of renewable resources that the uncertain generation can take by a zonotope and propagate it through a linearized power flow model take values within a symmetric polytope. This uncertainty is propagated through the power system model

  12. Health effects model for nuclear power plant accident consequence analysis. Part I. Introduction, integration, and summary. Part II. Scientific basis for health effects models

    SciTech Connect (OSTI)

    Evans, J.S.; Moeller, D.W.; Cooper, D.W.

    1985-07-01T23:59:59.000Z

    Analysis of the radiological health effects of nuclear power plant accidents requires models for predicting early health effects, cancers and benign thyroid nodules, and genetic effects. Since the publication of the Reactor Safety Study, additional information on radiological health effects has become available. This report summarizes the efforts of a program designed to provide revised health effects models for nuclear power plant accident consequence modeling. The new models for early effects address four causes of mortality and nine categories of morbidity. The models for early effects are based upon two parameter Weibull functions. They permit evaluation of the influence of dose protraction and address the issue of variation in radiosensitivity among the population. The piecewise-linear dose-response models used in the Reactor Safety Study to predict cancers and thyroid nodules have been replaced by linear and linear-quadratic models. The new models reflect the most recently reported results of the follow-up of the survivors of the bombings of Hiroshima and Nagasaki and permit analysis of both morbidity and mortality. The new models for genetic effects allow prediction of genetic risks in each of the first five generations after an accident and include information on the relative severity of various classes of genetic effects. The uncertainty in modeloling radiological health risks is addressed by providing central, upper, and lower estimates of risks. An approach is outlined for summarizing the health consequences of nuclear power plant accidents. 298 refs., 9 figs., 49 tabs.

  13. Analyzing Effects of Turbulence on Power Generation Using Wind Plant Monitoring Data: Preprint

    SciTech Connect (OSTI)

    Zhang, J.; Chowdhury, S.; Hodge, B. M.

    2014-01-01T23:59:59.000Z

    In this paper, a methodology is developed to analyze how ambient and wake turbulence affects the power generation of a single wind turbine within an array of turbines. Using monitoring data from a wind power plant, we selected two sets of wind and power data for turbines on the edge of the wind plant that resemble (i) an out-of-wake scenario (i.e., when the turbine directly faces incoming winds) and (ii) an in-wake scenario (i.e., when the turbine is under the wake of other turbines). For each set of data, two surrogate models were then developed to represent the turbine power generation (i) as a function of the wind speed; and (ii) as a function of the wind speed and turbulence intensity. Support vector regression was adopted for the development of the surrogate models. Three types of uncertainties in the turbine power generation were also investigated: (i) the uncertainty in power generation with respect to the published/reported power curve, (ii) the uncertainty in power generation with respect to the estimated power response that accounts for only mean wind speed; and (iii) the uncertainty in power generation with respect to the estimated power response that accounts for both mean wind speed and turbulence intensity. Results show that (i) under the same wind conditions, the turbine generates different power between the in-wake and out-of-wake scenarios, (ii) a turbine generally produces more power under the in-wake scenario than under the out-of-wake scenario, (iii) the power generation is sensitive to turbulence intensity even when the wind speed is greater than the turbine rated speed, and (iv) there is relatively more uncertainty in the power generation under the in-wake scenario than under the out-of-wake scenario.

  14. Final Technical Report Power through Policy: "Best Practices" for Cost-Effective Distributed Wind

    SciTech Connect (OSTI)

    Rhoads-Weaver, Heather; Gagne, Matthew; Sahl, Kurt; Orrell, Alice; Banks, Jennifer

    2012-02-28T23:59:59.000Z

    Power through Policy: 'Best Practices' for Cost-Effective Distributed Wind is a U.S. Department of Energy (DOE)-funded project to identify distributed wind technology policy best practices and to help policymakers, utilities, advocates, and consumers examine their effectiveness using a pro forma model. Incorporating a customized feed from the Database of State Incentives for Renewables and Efficiency (DSIRE), the Web-based Distributed Wind Policy Comparison Tool (Policy Tool) is designed to assist state, local, and utility officials in understanding the financial impacts of different policy options to help reduce the cost of distributed wind technologies. The project's final products include the Distributed Wind Policy Comparison Tool, found at www.windpolicytool.org, and its accompanying documentation: Distributed Wind Policy Comparison Tool Guidebook: User Instructions, Assumptions, and Case Studies. With only two initial user inputs required, the Policy Tool allows users to adjust and test a wide range of policy-related variables through a user-friendly dashboard interface with slider bars. The Policy Tool is populated with a variety of financial variables, including turbine costs, electricity rates, policies, and financial incentives; economic variables including discount and escalation rates; as well as technical variables that impact electricity production, such as turbine power curves and wind speed. The Policy Tool allows users to change many of the variables, including the policies, to gauge the expected impacts that various policy combinations could have on the cost of energy (COE), net present value (NPV), internal rate of return (IRR), and the simple payback of distributed wind projects ranging in size from 2.4 kilowatts (kW) to 100 kW. The project conducted case studies to demonstrate how the Policy Tool can provide insights into 'what if' scenarios and also allow the current status of incentives to be examined or defended when necessary. The ranking of distributed wind state policy and economic environments summarized in the attached report, based on the Policy Tool's default COE results, highlights favorable market opportunities for distributed wind growth as well as market conditions ripe for improvement. Best practices for distributed wind state policies are identified through an evaluation of their effect on improving the bottom line of project investments. The case studies and state rankings were based on incentives, power curves, and turbine pricing as of 2010, and may not match the current results from the Policy Tool. The Policy Tool can be used to evaluate the ways that a variety of federal and state policies and incentives impact the economics of distributed wind (and subsequently its expected market growth). It also allows policymakers to determine the impact of policy options, addressing market challenges identified in the U.S. DOE's '20% Wind Energy by 2030' report and helping to meet COE targets. In providing a simple and easy-to-use policy comparison tool that estimates financial performance, the Policy Tool and guidebook are expected to enhance market expansion by the small wind industry by increasing and refining the understanding of distributed wind costs, policy best practices, and key market opportunities in all 50 states. This comprehensive overview and customized software to quickly calculate and compare policy scenarios represent a fundamental step in allowing policymakers to see how their decisions impact the bottom line for distributed wind consumers, while estimating the relative advantages of different options available in their policy toolboxes. Interested stakeholders have suggested numerous ways to enhance and expand the initial effort to develop an even more user-friendly Policy Tool and guidebook, including the enhancement and expansion of the current tool, and conducting further analysis. The report and the project's Guidebook include further details on possible next steps. NREL Report No. BK-5500-53127; DOE/GO-102011-3453.

  15. Load controller and method to enhance effective capacity of a photovotaic power supply using a dynamically determined expected peak loading

    DOE Patents [OSTI]

    Perez, Richard (Delmar, NY)

    2003-04-01T23:59:59.000Z

    A load controller and method are provided for maximizing effective capacity of a non-controllable, renewable power supply coupled to a variable electrical load also coupled to a conventional power grid. Effective capacity is enhanced by monitoring power output of the renewable supply and loading, and comparing the loading against the power output and a load adjustment threshold determined from an expected peak loading. A value for a load adjustment parameter is calculated by subtracting the renewable supply output and the load adjustment parameter from the current load. This value is then employed to control the variable load in an amount proportional to the value of the load control parameter when the parameter is within a predefined range. By so controlling the load, the effective capacity of the non-controllable, renewable power supply is increased without any attempt at operational feedback control of the renewable supply. The expected peak loading of the variable load can be dynamically determined within a defined time interval with reference to variations in the variable load.

  16. Combined Heat and Power: Effective Energy Solutions for a Sustainable Future

    SciTech Connect (OSTI)

    Shipley, Ms. Anna [Sentech, Inc.; Hampson, Anne [Energy and Environmental Analysis, Inc., an ICF Company; Hedman, Mr. Bruce [Energy and Environmental Analysis, Inc., an ICF Company; Garland, Patricia W [ORNL; Bautista, Paul [Sentech, Inc.

    2008-12-01T23:59:59.000Z

    Combined Heat and Power (CHP) solutions represent a proven and effective near-term energy option to help the United States enhance energy efficiency, ensure environmental quality, promote economic growth, and foster a robust energy infrastructure. Using CHP today, the United States already avoids more than 1.9 Quadrillion British thermal units (Quads) of fuel consumption and 248 million metric tons of carbon dioxide (CO{sub 2}) emissions annually compared to traditional separate production of electricity and thermal energy. This CO{sub 2} reduction is the equivalent of removing more than 45 million cars from the road. In addition, CHP is one of the few options in the portfolio of energy alternatives that combines environmental effectiveness with economic viability and improved competitiveness. This report describes in detail the four key areas where CHP has proven its effectiveness and holds promise for the future as an: (1) Environmental Solution: Significantly reducing CO{sub 2} emissions through greater energy efficiency; (2) Competitive Business Solution: Increasing efficiency, reducing business costs, and creating green-collar jobs; (3) Local Energy Solution: Deployable throughout the US; and (4) Infrastructure Modernization Solution: Relieving grid congestion and improving energy security. CHP should be one of the first technologies deployed for near-term carbon reductions. The cost-effectiveness and near-term viability of widespread CHP deployment place the technology at the forefront of practical alternative energy solutions such as wind, solar, clean coal, biofuels, and nuclear power. Clear synergies exist between CHP and most other technologies that dominate the energy and environmental policy dialogue in the country today. As the Nation transforms how it produces, transports, and uses the many forms of energy, it must seize the clear opportunity afforded by CHP in terms of climate change, economic competitiveness, energy security, and infrastructure modernization. The energy efficiency benefits of CHP offer significant, realistic solutions to near- and long-term energy issues facing the Nation. With growing demand for energy, tight supply options, and increasing environmental constraints, extracting the maximum output from primary fuel sources through efficiency is critical to sustained economic development and environmental stewardship. Investment in CHP would stimulate the creation of new 'green-collar' jobs, modernize aging energy infrastructure, and protect and enhance the competitiveness of US manufacturing industries. The complementary roles of energy efficiency, renewable energy, and responsible use of traditional energy supplies must be recognized. CHP's proven performance and potential for wider use are evidence of its near-term applicability and, with technological improvements and further elimination of market barriers, of its longer term promise to address the country's most important energy and environmental needs. A strategic approach is needed to encourage CHP where it can be applied today and address the regulatory and technical challenges preventing its long-term viability. Experience in the United States and other countries shows that a balanced set of policies, incentives, business models, and investments can stimulate sustained CHP growth and allow all stakeholders to reap its many well-documented benefits.

  17. Improving the Power Conversion Efficiency of Ultrathin Organic Solar Cells by Incorporating Plasmonic Effects of Spheroidal Metallic Nanoparticles

    E-Print Network [OSTI]

    Park, Namkyoo

    Improving the Power Conversion Efficiency of Ultrathin Organic Solar Cells by Incorporating be exploited to achieve efficient harvesting of solar energy. Notably, the incorporation of plasmonic effects can allow the light harvesting capability of a solar cell to be maintained even as the thickness

  18. We use the OPA complex systems model of the power transmission system to investigate the effect of a series of

    E-Print Network [OSTI]

    Dobson, Ian

    generation dispatch and represents blackouts caused by randomly triggered cascading line outages the robustness of the Electric Power Transmission systems, the understanding of the system wide effect of various, cascading line outages, and the increases in system capacity caused by the engineering responses

  19. Abstract--This paper proposes an effective VAR planning based on reactive power margin for the enhancement of dynamic

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    , distributed generation (DG), D-STATCOM, reactive power margin, wind turbine. I. INTRODUCTION URRENTLY for the enhancement of dynamic voltage stability in distribution networks with distributed wind generation results showing the effects of composite load on voltage dynamics in the distribution network through

  20. Health effects models for nuclear power plant accident consequence analysis: Modifications of models resulting from recent reports on health effects of ionizing radiation

    SciTech Connect (OSTI)

    Abrahamson, S. (Wisconsin Univ., Madison, WI (United States)); Bender, M.A. (Brookhaven National Lab., Upton, NY (United States)); Boecker, B.B.; Scott, B.R. (Lovelace Biomedical and Environmental Research Inst., Albuquerque, NM (United States). Inhalation Toxicology Research Inst.); Gilbert, E.S. (Pacific Northwest Lab., Richland, WA (United States))

    1991-08-01T23:59:59.000Z

    The Nuclear Regulatory Commission has sponsored several studies to identify and quantify the potential health effects of accidental releases of radionuclides from nuclear power plants. The most recent health effects models resulting from these efforts were published in two reports, NUREG/CR-4214, Rev. 1, Part 1 (1990) and Part 2 (1989). Several major health effects reports have been published recently that may impact the health effects models presented in these reports. This addendum to the Part 2 (1989) report, provides a review of the 1986 and 1988 reports by the United Nations Scientific Committee on the Effects of Atomic Radiation, the National Academy of Sciences/National Research Council BEAR 5 Committee report and Publication 60 of the International Commission on Radiological Protection as they relate to this report. The three main sections of this addendum discuss early occurring and continuing effects, late somatic effects, and genetic effects. The major changes to the NUREG/CR-4214 health effects models recommended in this addendum are for late somatic effects. These changes reflect recent changes in cancer risk factors that have come from longer followup and revised dosimetry in major studies like that on the Japanese A-bomb survivors. The results presented in this addendum should be used with the basic NUREG/CR-4214 reports listed above to obtain the most recent views on the potential health effects of radionuclides released accidentally from nuclear power plants. 48 refs., 4 figs., 24 tabs.

  1. Towards Effective Clustering Techniques for the Analysis of Electric Power Grids

    SciTech Connect (OSTI)

    Hogan, Emilie A.; Cotilla Sanchez, Jose E.; Halappanavar, Mahantesh; Wang, Shaobu; Mackey, Patrick S.; Hines, Paul; Huang, Zhenyu

    2013-11-30T23:59:59.000Z

    Clustering is an important data analysis technique with numerous applications in the analysis of electric power grids. Standard clustering techniques are oblivious to the rich structural and dynamic information available for power grids. Therefore, by exploiting the inherent topological and electrical structure in the power grid data, we propose new methods for clustering with applications to model reduction, locational marginal pricing, phasor measurement unit (PMU or synchrophasor) placement, and power system protection. We focus our attention on model reduction for analysis based on time-series information from synchrophasor measurement devices, and spectral techniques for clustering. By comparing different clustering techniques on two instances of realistic power grids we show that the solutions are related and therefore one could leverage that relationship for a computational advantage. Thus, by contrasting different clustering techniques we make a case for exploiting structure inherent in the data with implications for several domains including power systems.

  2. Managing Distributed UPS Energy for Effective Power Capping in Data Centers Vasileios Kontorinis

    E-Print Network [OSTI]

    Tomkins, Andrew

    that are amortized over the lifetime of the data center (capital expenses, or capex) and monthly recur- ring operating expenses (opex) [22]. Capex costs are pro- portional to the provisioned IT power per facility examines the use of distributed batteries in the data center to reduce both capex and opex costs. Power

  3. EFFECT OF FEEDBACK CONTROL ON THE POWER CONSUMPTION OF INDUCED-STRAIN ACTUATORS

    E-Print Network [OSTI]

    Lindner, Douglas K.

    Blacksburg, VA 24061 lindner@vt.edu Donald J. Leo Center for Intelligent Materials, Systems and Structures and reactive power flow through the structure and actuator into the amplifier when the structure is excited of the power on the material properties of the actuator, structure and the configuration of the controller

  4. Power Deposition into the Discharge Channel of a Hall Effect Thruster

    E-Print Network [OSTI]

    Walker, Mitchell

    as greater than 10 kW, places elevated demands on thermal management of the design, particularly as power proportional to the local erosion rate [6]. The thermal design of the thruster must accommodate the increases in the channel power density to prevent overheating of critical components. Thermal stress experienced by a HET

  5. Effective Ancillary Services Market Designs on High Wind Power Penetration Systems: Preprint

    SciTech Connect (OSTI)

    Ela, E.; Kirby, B.; Navid, N.; Smith, J. C.

    2011-12-01T23:59:59.000Z

    This paper focuses on how the ancillary service market designs are implemented and how they may require changes on systems with greater penetrations of variable renewable energy suppliers, in particular wind power. Ancillary services markets have been developed in many of the restructured power system regions throughout the world. Ancillary services include the services that support the provision of energy to support power system reliability. The ancillary services markets are tied tightly to the design of the energy market and to the physics of the system and therefore careful consideration of power system economics and engineering must be considered in their design. This paper focuses on how the ancillary service market designs are implemented and how they may require changes on systems with greater penetrations of variable renewable energy suppliers, in particular wind power.

  6. Effect on the condition of the metal in A K-300-3.5 turbine owing to multicycle fatigue from participation of a power generating unit in grid frequency and power regulation

    SciTech Connect (OSTI)

    Lebedeva, A. I.; Zorchenko, N. V.; Prudnikov, A. A.

    2011-09-15T23:59:59.000Z

    The effect on the condition of the rotor material owing to multicycle fatigue caused by variable stresses during participation of a power generating unit in grid frequency and power regulation is evaluated using the K-300-23.5 steam turbine as an example. It is shown that during normalized primary frequency regulation the safety factor is at least 50, while during automatic secondary regulation of frequency and power there is essentially no damage to the metal.

  7. The effects of lightning and high altitude electromagnetic pulse on power distribution lines

    SciTech Connect (OSTI)

    Uman, M.A.; Rubinstein, M.; Yacoub, Z. [Florida Univ., Gainesville, FL (United States)

    1995-01-01T23:59:59.000Z

    We simultaneously recorded the voltages induced by lightning on both ends of an unenergized 448-meter long unenergized electric power line and the lightning vertical electric and horizontal magnetic fields at ground level near the line. The lightning data studied and presented here were due both to cloud lightning and to very close (about 20 m from the line) artificially initiated lightning. For cloud sources, a frequency-domain computer program called EMPLIN was used to calculate induced line voltages as a function of source elevation, angle of incidence, and wave polarization of the radiated cloud discharge pulses in order to compare with the measurements. For very-close lightning, the measured line voltages could be grouped into two categories, those in which multiple, similarly shaped, evenly spaced pulses were observed, which we call oscillatory, and those dominated by a principal pulse with subsidiary oscillations of much smaller amplitude, which we call impulsive. The amplitude of the induced voltage ranged from tens of kilovolts for oscillatory voltages to hundreds of kilovolts for impulsive voltages. A new technique is derived for the calculation of the electromagnetic fields from nearby lightning to ground above an imperfectly conducting ground. This technique was used in conjunction with an existing time domain coupling theory and lightning return stroke model to calculate voltages at either end of the line. The results show fair agreement with the measured oscillatory voltage waveforms if corona is ignored and improved results when corona effects are modeled. The modeling of the impulsive voltage, for which local flashover probably successful. In an attempt to understand better the sources of the line voltages for very close lightning, measurements of the horizontal and vertical electric fields 30 m from triggered lightning were obtained.

  8. Effects of Village Power Quality on Fuel Consumption and Operating Expenses

    SciTech Connect (OSTI)

    Richard Wies; Ron Johnson

    2008-12-31T23:59:59.000Z

    Alaska's rural village electric utilities are isolated from the Alaska railbelt electrical grid intertie and from each other. Different strategies have been developed for providing power to meet demand in each of these rural communities. Many of these communities rely on diesel electric generators (DEGs) for power. Some villages have also installed renewable power sources and automated generation systems for controlling the DEGs and other sources of power. For example, Lime Village has installed a diesel battery photovoltaic hybrid system, Kotzebue and Wales have wind-diesel hybrid systems, and McGrath has installed a highly automated system for controlling diesel generators. Poor power quality and diesel engine efficiency in village power systems increases the cost of meeting the load. Power quality problems may consist of poor power factor (PF) or waveform disturbances, while diesel engine efficiency depends primarily on loading, the fuel type, the engine temperature, and the use of waste heat for nearby buildings. These costs take the form of increased fuel use, increased generator maintenance, and decreased reliability. With the cost of bulk fuel in some villages approaching $1.32/liter ($5.00/gallon) a modest 5% decrease in fuel use can result in substantial savings with short payback periods depending on the village's load profile and the cost of corrective measures. This project over its five year history has investigated approaches to improving power quality and implementing fuel savings measures through the use of performance assessment software tools developed in MATLAB{reg_sign} Simulink{reg_sign} and the implementation of remote monitoring, automated generation control, and the addition of renewable energy sources in select villages. The results have shown how many of these communities would benefit from the use of automated generation control by implementing a simple economic dispatch scheme and the integration of renewable energy sources such as wind generation.

  9. Suction recirculation and its effects upon axial-flow pump power consumption 

    E-Print Network [OSTI]

    Prince, Tony M.

    1983-01-01T23:59:59.000Z

    1 Test Procedure Outline 2 Section and Pump Critical Flowrates and Speeds. 63 91 3 Power Coefficient and Reynolds Number Based on Cone Radius. 100 4 Power Coefficient and Reynolds Number Based on Surface Area. 101 5 Power Coefficient... Variation with NPSH with Q rl 54 Head Variation with NPSH with Q 2 . r2 55 Head Variation with NPSH with Q 3. r3' 120 128 129 130 131 134 135 136 CHAPTER I INTRODUCTION Pumps of different types are used to displace liquids from one location...

  10. Power Factor Reactive Power

    E-Print Network [OSTI]

    motor power: 117.7 V x 5.1 A = 600 W? = 0.6 kW? NOT the power measured by meter #12;Page 9 PSERC: displacement power factor: angle between voltage and current = 0 degrees pf = cos(0 degrees) = 1.0 true powerPage 1 PSERC Power Factor and Reactive Power Ward Jewell Wichita State University Power Systems

  11. Effects of a carbon tax on microgrid combined heat and power adoption

    E-Print Network [OSTI]

    Siddiqui, Afzal S.; Marnay, Chris; Edwards, Jennifer L.; Firestone, Ryan M.; Ghosh, Srijay; Stadler, Michael

    2004-01-01T23:59:59.000Z

    Name DER Type Rated Power (kW) microturbine, low pressureMTH-30 microturbine, high pressure PAFC-200 fuel cell GA-25natural gas engine microturbine microturbine photovoltaics

  12. Microcontroller Servomotor for Maximum Effective Power Point for Solar Cell System 

    E-Print Network [OSTI]

    Al-Khalidy, M.; Al-Rawi, O.; Noaman, N.

    2010-01-01T23:59:59.000Z

    In this paper a Maximum Power point (MPP) tracking algorithm is developed using dual-axis servomotor feedback tracking control system. An efficient and accurate servomotor system is used to increase the system efficiency ...

  13. Reliability Evaluation of Composite Power Systems Including the Effects of Hurricanes

    E-Print Network [OSTI]

    Liu, Yong

    2011-02-22T23:59:59.000Z

    Adverse weather such as hurricanes can significantly affect the reliability of composite power systems. Predicting the impact of hurricanes can help utilities for better preparedness and make appropriate restoration arrangements...

  14. Microcontroller Servomotor for Maximum Effective Power Point for Solar Cell System

    E-Print Network [OSTI]

    Al-Khalidy, M.; Al-Rawi, O.; Noaman, N.

    2010-01-01T23:59:59.000Z

    In this paper a Maximum Power point (MPP) tracking algorithm is developed using dual-axis servomotor feedback tracking control system. An efficient and accurate servomotor system is used to increase the system efficiency and reduces the solar cell...

  15. New DOE Report Finds Wind Power Can Serve as Cost-Effective Long...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    prices will remain low for many years to come. Drawing on a sizable sample of long-term power purchase agreements (PPAs) between existing wind projects and utilities in the...

  16. Regulatory Control of Vehicle and Power Plant Emissions: How Effective and at What Cost?

    E-Print Network [OSTI]

    Paltsev, S.

    Passenger vehicles and power plants are major sources of greenhouse gas emissions. While economic analyses generally indicate that a broader market-based approach to greenhouse gas reduction would be less costly and more ...

  17. Efficient solar cooling: first ever non-tracking solar collectors powering a double effect absorption chiller

    E-Print Network [OSTI]

    Poiry, Heather Marie

    2011-01-01T23:59:59.000Z

    research focused on solar powered cooling which has amounted to systemscooling system in 2009, the year I graduated with my B.S. and I chose to continue this research

  18. Study to assess the effects of electromagnetic pulse on electric power systems. Phase I. Executive summary

    SciTech Connect (OSTI)

    Legro, J.R.; Abi-Samra, N.C.; Crouse, J.C.; Hileman, A.R.; Kruse, V.J.; Taylor, E.R. Jr.; Tesche, F.M.

    1985-09-01T23:59:59.000Z

    The high-altitude detonation of a nuclear device over the continental United States can expose electric utility power systems to intense, transient electromagnetic pulses (EMP). In addition to the initial transient fields designated as early-time, high-altitude EMP and intermediate-time, high-altitude EMP, electromagnetic signals are also produced at times from seconds to hundreds of seconds after the burst. Nuclear detonations at or near the earth's surface can also produce transient EMP. This volume presents an executive summary of the preliminary research effort to investigate the nature and coupling of EMP environments to electric power systems, define the construction of approximate system response models, and document the development of a methodology to assess equipment and system vulnerability. The research to date does not include an attempt to quantify power system performance in EMP environments. This effort has been to define the analytical methods and techniques necessary to conduct such assessments at a later time.

  19. Maximizing Power Output in Homogeneous Charge Compression Ignition (HCCI) Engines and Enabling Effective Control of Combustion Timing

    E-Print Network [OSTI]

    Saxena, Samveg

    2011-01-01T23:59:59.000Z

    HCCI Engine for Power Generation, ASME IC Engine Conference,Engines for Power Generation , ASME IC Engine Conference,Engine for Power Generation”, ASME IC Engine Conference,

  20. Effect of electron density profile on power absorption of high frequency electromagnetic waves in plasma

    SciTech Connect (OSTI)

    Xi Yanbin; Liu Yue [MOE Key Laboratory of Materials Modification by Laser, Electron, and Ion Beams, School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China)

    2012-07-15T23:59:59.000Z

    Considering different typical electron density profiles, a multi slab approximation model is built up to study the power absorption of broadband (0.75-30 GHz) electromagnetic waves in a partially ionized nonuniform magnetized plasma layer. Based on the model, the power absorption spectra for six cases are numerically calculated and analyzed. It is shown that the absorption strongly depends on the electron density fluctuant profile, the background electron number density, and the collision frequency. A potential optimum profile is also analyzed and studied with some particular parameters.

  1. Effect of Compressing the Dynamic Range of the Power Spectrum in Modulation Filtering Based Speech Enhancement

    E-Print Network [OSTI]

    .paliwal@griffith.edu.au Abstract In the modulation-filtering based speech enhancement method, noise suppression is achieved systematically different dynamic range compression functions applied to the power spectrum for speech enhancement- gibility of the enhanced speech. The quality is measured objec- tively in terms of the Perceptual

  2. Top Management Group Pay Disparities and Subsequent Firm Performance: The Effect of Powerful CEOs

    E-Print Network [OSTI]

    McClelland, Patrick Lyn

    2008-05-21T23:59:59.000Z

    and to move the current debate beyond tournament theoretic explanations by showing that pay disparities within top management groups arise as a function of the distribution of power within them. This study is based on a sample of 604 publicly-traded firms...

  3. Title of Document: CHARACTERIZATION AND MODELING OF HIGH POWER MICROWAVE EFFECTS IN

    E-Print Network [OSTI]

    Anlage, Steven

    'Shea, Department of Electrical and Computer Engineering The intentional use of high power microwave (HPM) signals to assess HPM threats involve empirical testing of electronic equipment, which provides no insight into fundamental mechanisms of HPM induced upset. The work presented in this dissertation is part of a broad effort

  4. The political effectiveness of non-state violence : paradox, polarity, and the pursuit of power

    E-Print Network [OSTI]

    Krause, Peter John Paul

    2011-01-01T23:59:59.000Z

    When is non-state violence politically effective? Existing scholarship suggests that insurgency and terrorism are generally effective or ineffective based on the analysis of unitary non-state coercers operating solely at ...

  5. Assessment of environmental effects of the coal used in the Seyitomer thermal power plant (Turkey) on white willow

    SciTech Connect (OSTI)

    Cicek, A.; Koparal, A.S. [Anadolu University, Eskisehir (Turkey). Applied Research Center for Environmental Problems

    2006-07-01T23:59:59.000Z

    Thermal power plants increase local pollution through SOx, NOx, volatile organic compounds (VOCs), and oils containing primarily particulates (including heavy metals) and increase global pollution through CO{sub 2}, the greenhouse gas that causes global warming. These strong pollutants have harmful effects on living organisms and the entire ecosystem. In this study, we analysed the heavy metals iron (Fe), cadmium (Cd), chromium (Cr), copper (Cu), zinc (Zn), lead (Pb), nickel (Ni), and sulfur (S) induced by sulfur dioxide found in both the washed and unwashed leaves of Salix alba L. tree, grown in six distinct localities in the vicinity of the Seyitomer thermal power plant, to assess the environmental impact. All parameters were examined in the surface soils (0-30 cm), and the most intense concentration of the pollutants in both soils and leaves was observed to be in the direction of the prevailing wind.

  6. The effect of deposition power on the electrical properties of Al-doped zinc oxide thin films

    SciTech Connect (OSTI)

    Chun, B. S.; Choi, Daniel S. [Department of Chemical and Materials Engineering, University of Idaho, Moscow, Idaho 83844-3024 (United States); Wu, H. C.; Shvets, I. V. [CRANN, School of Physics, Trinity College Dublin, Dublin 2 (Ireland); Abid, M. [IPMC, Ecole Polytechnique Federale de Lausanne, Station 3, CH-1015 Lausanne (Switzerland); King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451 (Saudi Arabia); Chu, I. C. [Data and Storage R and D Laboratory, Seocho R and D Campus, LG Electronics, Seoul 137-130 (Korea, Republic of); Serrano-Guisan, S. [Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig (Germany)

    2010-08-23T23:59:59.000Z

    We investigated the effect on the electronic properties of aluminum (Al)-zinc oxide (ZnO) films by modulating the radio frequency sputtering power. Our experimental results show that increasing the sputtering power increases the Al doping concentration, decreases the resistivity, and also shifts the Zn 2p and O 1s to higher binding energy states. Our local-density approximation (LDA) and LDA+U calculations show that the shift in higher binding energy and resistivity decrease are due to an enhancement of the O 2p-Zn 3d coupling and the modification of the Zn 4s-O 2p interaction in ZnO induced by Al doping.

  7. Effect of Pulsed Nd: YAG Laser Powers On 304 Stainless Steel Welding

    SciTech Connect (OSTI)

    Candan, L.; Demir, A.; Akman, E. [University of Kocaeli, Laser Technologies Research and Application Center, Kocaeli (Turkey)

    2007-04-23T23:59:59.000Z

    In this study, optimum welding parameters are obtained for 1mm thickness type 304 stainless steel welding using the Lumonics JK760TR pulsed Nd:YAG laser. The influences of laser welding parameters such as pulse duration, focal position, frequency, laser power, welding speed, and shielding gas (N2) pressure on penetration defining welding quality are investigated. Also comparisons of overlap ratios are presented between theory and experiment for pulse duration, frequency and welding speed.

  8. Wind Power Project Repowering: Financial Feasibility, Decision Drivers, and Supply Chain Effects

    SciTech Connect (OSTI)

    Lantz, E.; Leventhal, M.; Baring-Gould, I.

    2013-12-01T23:59:59.000Z

    As wind power facilities age, project owners are faced with plant end of life decisions. This report is intended to inform policymakers and the business community regarding the history, opportunities, and challenges associated with plant end of life actions, in particular repowering. Specifically, the report details the history of repowering, examines the plant age at which repowering becomes financially attractive, and estimates the incremental market investment and supply chain demand that might result from future U.S. repowering activities.

  9. Packaging effects: operating frequency, power, complexity, reliability, and cost The packaging challenge is too keep up with the demands of forecasted silicon

    E-Print Network [OSTI]

    Patel, Chintan

    Packaging effects: operating frequency, power, complexity, reliability, and cost The packaging challenge is too keep up with the demands of forecasted silicon technology and forecasted cost targets. Low performance (servers, avionics, supercomputers) Harsh (under the hood and hostile environments) #12;power

  10. Time Domain Characterizationof PowerAmplifiers with Memory Effects P. Draxler*, I. Langmore, T.P. Hung, and P.M. Asbeck

    E-Print Network [OSTI]

    Asbeck, Peter M.

    are characterized via time domain measurements, with waveforms including steps, triangular waveforms and CDMA response associated with the memory effects. I. ~NTRODUCTION Requirements for extended battery life been driving the need for improved power amplifier perfonnance. Accurate amplifier characterization

  11. MONITORING POWER PLANT EFFICIENCY USING THE MICROWAVE-EXCITED PHOTOACOUSTIC EFFECT TO MEASURE UNBURNED CARBON

    SciTech Connect (OSTI)

    Robert C. Brown; Robert J. Weber; Andrew A. Suby

    2003-01-01T23:59:59.000Z

    Three test instruments are being evaluated to determine the feasibility of using photoacoustic technology for measuring unburned carbon in fly ash. The first test instrument is a single microwave frequency system previously constructed to measure photo-acoustic signals in an off-line configuration. This system was assembled and used to test parameters thought important to photo-acoustic signal output. A standard modulation frequency was chosen based upon signal to noise data gained from experimentation. Sample heterogeneity was tested and found not to be influential. Further testing showed that sample compression and photo-acoustic volume do affect photo-acoustic signal with photoacoustic volume being the most influential. Testing in the fifth quarter focused on microwave power stability. Simultaneously, a second instrument is being constructed based in part on lessons learned with the first instrument, but also expands the capabilities of the first instrument by allowing a spectrum of microwave frequencies to be tested up to 10 GHz. The power amplifiers for this second instrument were completed and tested. Improvements were made to the current leveling loop, which will stabilize the microwave power. This loop is currently in operation with the single frequency cell. Discriminatory measurements are continuing in an attempt to differentiate between magnetic contaminants such as iron and non-magnetic contaminants such as carbon. A short coaxial test fixture was fabricated and tested showing the promise of another microwave based test method for determining carbon content in fly ash. Preliminary design iterations for the third on-line instrument (based on the experiences of the first two instruments) have begun.

  12. Short distance physics and initial state effects on the CMB power spectrum

    SciTech Connect (OSTI)

    Zarei, M. [Department of Physics, Isfahan University of Technology, Isfahan 84156-83111 (Iran, Islamic Republic of)

    2008-12-15T23:59:59.000Z

    We investigate a modification in the action of inflaton due to noncommutativity leads to a nonstandard initial vacuum and oscillatory corrections in the initial power spectrum. We show that the presence of these oscillations causes a drop in the WMAP {chi}{sup 2} about {delta}{chi}{sup 2}{approx}8.5. As a bonus, from the parameter estimation done in this work, we show that the noncommutative parameters can be precisely bound to 10{sup 16} GeV or 10{sup 4} GeV depending on the inflation scale.

  13. Crude Glycerol as Cost-Effective Fuel for Combined Heat and Power to

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power Administration would likeConstitution4 Department of EnergyCross-SectorDepartmentReplace

  14. Effect of Inert Cover Gas on Performance of Radioisotope Stirling Space Power System

    SciTech Connect (OSTI)

    Carpenter, Robert; Kumar, V; Ore, C; Schock, Alfred

    2001-01-01T23:59:59.000Z

    This paper describes an updated Orbital design of a radioisotope Stirling power system and its predicted performance at the beginning and end of a six-year mission to the Jovian moon Europa. The design is based on General Purpose Heat Source (GPHS) modules identical to those previously developed and safety-qualified by the Department of Energy (DOE) which were successfully launched to Jupiter and Saturn by the Jet Propulsion Laboratory (JPL). In each generator, the heat produced by the decay of the Pu-238 isotope is converted to electric power by two free-piston Stirling engines and linear alternators developed by Stirling Technology Company (STC), and their rejected waste heat is transported to radiators by heat pipes. The principal difference between the proposed system design and previous Orbital designs (Or et al. 2000) is the thermal insulation between the heat source and the generator's housing. Previous designs had employed multifoil insulation, whereas the design described here employs Min-K-1800 thermal insulation. Such insulation had been successfully used by Teledyne and GE in earlier RTGs (Radioisotope Thermoelectric Generators). Although Min-K is a much poorer insulator than multifoil in vacuum and requires a substantially greater thickness for equivalent performance, it offers compensating advantages. Specifically it makes it possible to adjust the generator's BOM temperatures by filling its interior volume with inert cover gas. This makes it possible to meet the generator's BOM and EOM performance goals without exceeding its allowable temperature at the beginning of the mission.

  15. Effects of regional insolation differences upon advanced solar thermal electric power plant performance and energy costs

    SciTech Connect (OSTI)

    Latta, A.F.; Bowyer, J.M.; Fujita, T.; Richter, P.H.

    1980-02-01T23:59:59.000Z

    This study determines the performance and cost of four 10 MWe advanced solar thermal electric power plants sited in various regions of the continental United States. The solar plants are conceptualized to begin commercial operation in the year 2000. It is assumed that major subsystem performance will have improved substantially as compared to that of pilot plants currently operating or under construction. The net average annual system efficiency is therefore roughly twice that of current solar thermal electric power plant designs. Similarly, capital costs reflecting goals based on high-volume mass production that are considered to be appropriate for the year 2000 have been used. These costs, which are approximately an order of magnitude below the costs of current experimental projects, are believed to be achievable as a result of the anticipated sizeable solar penetration into the energy market in the 1990 to 2000 timeframe. The paraboloidal dish, central receiver, cylindrical parabolic trough, and compound parabolic concentrators comprise the advanced collector concepts studied. All concepts exhibit their best performance when sited in regional areas such as the sunbelt where the annual insolation is high. The regional variation in solar plant performance has been assessed in relation to the expected rise in the future cost of residential and commercial electricity in the same regions. A discussion of the regional insolation data base, a description of the solar systems performance and costs, and a presentation of a range for the forecast cost of conventional electricity by region and nationally over the next several decades are given.

  16. Effect of AC target power on AlN film quality

    SciTech Connect (OSTI)

    Knisely, Katherine, E-mail: kknisely@umich.edu; Grosh, Karl [Department of Mechanical Engineering, University of Michigan, 2026 GG Brown—2350 Hayward St., Ann Arbor, Michigan 48109 (United States)

    2014-09-01T23:59:59.000Z

    The influence of alternating current (AC) target power on film stress, roughness, and x-ray diffraction rocking curve full width half maximum (FWHM) was examined for AlN films deposited using S-gun magnetron sputtering on insulative substrates consisting of Si wafers with 575?nm thermal oxide. As the AC target power was increased from 5 to 8?kW, the deposition rate increased from 9.3 to 15.9?A/s, film stress decreased from 81 to ?170?MPa, and the rocking curve FWHM increased from 0.98 to 1.03°. AlN film behavior is observed to change with target life; films deposited at 200?kWh target life were approximately 40?MPa more compressive and had 0.02° degree higher rocking curve FWHM values than films deposited at 130?kWh. AlN films deposited in two depositions were compared with films deposited in a single deposition, in order to better characterize the growth behavior and properties of AlN films deposited on an existing AlN film, which is not well understood. Two deposition films, when compared with single deposition films, showed no variation in residual stress trends or grain size behavior, but the average film roughness increased from 0.7 to 1.4?nm and rocking curve FWHM values increased by more than 0.25°.

  17. Factors influencing the efficiency and cost effectiveness of large power transformers

    SciTech Connect (OSTI)

    Peacock, D.W.

    1980-01-01T23:59:59.000Z

    The purpose of this paper is to identify those factors that can influence transformer design, to identify some fundamental and practical constraints that the designer must satisfy, and to show the effect on transformer efficiency and evaluated cost.

  18. Power Plant Power Plant

    E-Print Network [OSTI]

    Tingley, Joseph V.

    Basin Center for Geothermal Energy at University of Nevada, Reno (UNR) 2 Nevada Geodetic LaboratoryStillwater Power Plant Wabuska Power Plant Casa Diablo Power Plant Glass Mountain Geothermal Area Lassen Geothermal Area Coso Hot Springs Power Plants Lake City Geothermal Area Thermo Geothermal Area

  19. Effect of neglecting resistance in calculations of short circuit faults on power systems

    E-Print Network [OSTI]

    Mayo, Samuel Jonathan

    1948-01-01T23:59:59.000Z

    of Conductor B. Ef feet of Locat ion of i"ault C. Effect of Generator Impedances Effect of ". utual Impedance in Overhead ircuits E. 'ffect of Ground '&!res F. Effect of Type of Fault 1. Line to Line Fault 2, D&uble Line to Ground Fault Single Line...) Configuration of conductorS Fig. P . 59Ste, m 1. Two overheaci circu (rs with mutual coupling 12 IO t GEOAf ETR IC PER IV DIsT~NGE OF GRovND o' I RE F Ro III Co N D v c 7'ORS ~ 20 )(Io f 25 )(lo + fog FEET {a) One ground wire to 10 GEOM KTR I C...

  20. ACTIVE CATHODES FOR SUPER-HIGH POWER DENSITY SOLID OXIDE FUEL CELLS THROUGH SPACE CHARGE EFFECTS

    SciTech Connect (OSTI)

    Anil V. Virkar

    2004-05-17T23:59:59.000Z

    This report summarizes the work done during the sixth quarter of the project. Effort was directed in three areas: (1) Further development of the model on the role of connectivity on ionic conductivity of porous bodies, including the role of grain boundaries and space charge region. (2) Calculation of the effect of space charge and morphology of porous bodies on the effective charge transfer resistance of porous composite cathodes. (3) The investigation of the three electrode system for the measurement of cathodic polarization using amperometric sensors.

  1. Determination of the effect of harmonics on pipe-type power cable AC/DC resistance ratio

    SciTech Connect (OSTI)

    Palmer, J.A.; Degeneff, R.C. (Rensselaer Polytechnic Inst., Troy, NY (United States)); McKernan, T.M.; Halleran, T.M. (Consolidated Edison Co. of NY, Inc., New York (United States))

    1993-03-01T23:59:59.000Z

    This paper presents a closed form expression to compute the AC/CD resistance ratio of HPFF (High Pressure Fluid Filled) pipe-type cable in the presence of harmonics. Industry currently computes this factor, which is a significant part in assessing the current carrying capacity of a system, with the assumption that the currents are purely sinusoidal at 60 Hz. However, as levels of harmonics increase on power systems, concern for the effect of harmonics on system ampacities rises, and that effect has already been discussed for distribution systems. This paper develops a closed form hybrid of the resistance ratio equations presented by Neher and McGrath, and compares the results with measured data at 60 Hz. At present there is no measured data available for the resistance ratio at higher frequencies, so a two dimensional finite element model is developed to view the effect of frequency on the resistance ratio. A discussion is given on the effect of a specific harmonics scenario on the resistance ratio of a given system, and results are presented for some example systems. The paper also discusses the validity and characteristics of each method.

  2. The role of vibrant retail electricity markets in assuring that wholesale power markets operate effectively

    SciTech Connect (OSTI)

    Goulding, A.J.; Rufin, C.; Swinand, G.

    1999-12-01T23:59:59.000Z

    Barriers to competitive supplier entry such as California's wholesale-price pass-through model can provide an almost insurmountable barrier to effective retail competition. The telecommunications, airline, and software industries provide lessons--positive and negative--on how creating competitive wholesale markets is insufficient to bring the benefits of competition to smaller consumers.

  3. Sixth Northwest Conservation and Electric Power Plan Appendix G: MCS Cost-effectiveness for

    E-Print Network [OSTI]

    , cost and savings assumptions used to establish the efficiency level that achieves all electricity and assumptions used to determine whether the regionally cost-effective efficiency levels are economically-1 shows the levels of energy efficiency assumed for new site built and manufactured homes built

  4. Agent Cooperatives for Effective Power Consumption Shifting Charilaos Akasiadis and Georgios Chalkiadakis

    E-Print Network [OSTI]

    Chalkiadakis, Georgios

    reduced electricity price rates, given their different load shifting capabilities. This allows even agents of household energy pricing. In addition, due to in- creased levels of consumer uncertainty regarding imminent applicable scheme for electricity consumption shifting and effective de- mand curve flattening. The scheme

  5. Agent Cooperatives for Effective Power Consumption Shifting Charilaos Akasiadis and Georgios Chalkiadakis

    E-Print Network [OSTI]

    Chalkiadakis, Georgios

    reduced electricity price rates, given their different load shifting capabilities. This allows even agents- ization of household energy pricing. In addition, due to in- creased levels of consumer uncertainty applicable scheme for electricity consumption shifting and effective de- mand curve flattening. The scheme

  6. Effects of a carbon tax on microgrid combined heat and power adoption

    SciTech Connect (OSTI)

    Siddiqui, Afzal S.; Marnay, Chris; Edwards, Jennifer L.; Firestone, Ryan M.; Ghosh, Srijay; Stadler, Michael

    2004-11-01T23:59:59.000Z

    This paper describes the economically optimal adoption and operation of distributed energy resources (DER) by a hypothetical California microgrid consisting of a group of commercial buildings over an historic test year, 1999. The optimization is conducted using a customer adoption model (DER-CAM) developed at Berkeley Lab and implemented in the General Algebraic Modeling System (GAMS). A microgrid is a semiautonomous grouping of electricity and heat loads interconnected to the existing utility grid (macrogrid) but able to island from it. The microgrid minimizes the cost of meeting its energy requirements (consisting of both electricity and heat loads) by optimizing the installation and operation of DER technologies while purchasing residual energy from the local combined natural gas and electricity utility. The available DER technologies are small-scale generators (< 500 kW), such as reciprocating engines, microturbines, and fuel cells, with or without combined heat and power (CHP) equipment, such as water and space heating and/or absorption cooling. By introducing a tax on carbon emissions, it is shown that if the microgrid is allowed to install CHP-enabled DER technologies, its carbon emissions are mitigated more than without CHP, demonstrating the potential benefits of small-scale CHP technology for climate change mitigation. Reciprocating engines with heat recovery and/or absorption cooling tend to be attractive technologies for the mild southern California climate, but the carbon mitigation tends to be modest compared to purchasing utility electricity because of the predominance of relatively clean central station generation in California.

  7. INTEGRATING PHOTOVOLTAIC SYSTEMS

    E-Print Network [OSTI]

    Delaware, University of

    for Energy and Environmental Policy University of Delaware February 2006 #12;INTEGRATING PHOTOVOLTAIC Delmarva Power Delaware Energy Office University of Delaware Center for Energy and Environmental Policy..................................................................................................... 5 3.3.1 Delaware's Solar Resource

  8. Progress through Dispute: The Caspian Oil Power Struggle and Its Effects on Central Asian Cooperation

    E-Print Network [OSTI]

    Cristin Perry, Natalie

    2014-08-25T23:59:59.000Z

    shores on the Caspian seem to hold less oil and natural gas reserves than the other four littoral states,” (Bahgat, 2007, p. 163). Since the Iranian economy is less than stable at the moment, and one effect of this is a strong determination on the part... has also joined the TANAP pipeline bandwagon and is ready to invest in building materials and start the proposal process, regarding specifics in transport and delivery. This pipeline will transport gas from Azerbaijan to Turkey through the Turkish...

  9. Evaluation of the Effectiveness of a New Technology for Extraction of Insoluble Impurities from Nuclear Power Plant Steam Generators with Purge Water

    SciTech Connect (OSTI)

    Bud'ko, I. O. [JSC NIITsE 'Tsentrenergo' (Russian Federation)] [JSC NIITsE 'Tsentrenergo' (Russian Federation); Zhukov, A. G. [Rostov Nuclear Power Plant (Russian Federation)] [Rostov Nuclear Power Plant (Russian Federation)

    2013-11-15T23:59:59.000Z

    An experimental technology for the removal of insoluble impurities from a horizontal steam generator with purge water during planned shutdowns of the power generating unit is improved through a more representative determination of the concentration of impurities in the purge water ahead of the water cleanup facility and a more precise effective time for the duration of the purge process. Tests with the improved technique at power generating unit No. 1 of the Rostov Nuclear Power Plant show that the efficiency with which insoluble impurities are removed from the steam generator volume was more than two orders of magnitude greater than under the standard regulations.

  10. Body powered thermoelectric systems

    E-Print Network [OSTI]

    Settaluri, Krishna Tej

    2012-01-01T23:59:59.000Z

    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 ...

  11. AlGaN/GaN field effect transistors for power electronics—Effect of finite GaN layer thickness on thermal characteristics

    SciTech Connect (OSTI)

    Hodges, C., E-mail: chris.hodges@bristol.ac.uk; Anaya Calvo, J.; Kuball, M. [H. H. Wills Physics Laboratory, University of Bristol, Bristol BS8 1TL (United Kingdom)] [H. H. Wills Physics Laboratory, University of Bristol, Bristol BS8 1TL (United Kingdom); Stoffels, S.; Marcon, D. [IMEC, Kapeldreef 75, B3001 Leuven (Belgium)] [IMEC, Kapeldreef 75, B3001 Leuven (Belgium)

    2013-11-11T23:59:59.000Z

    AlGaN/GaN heterostructure field effect transistors with a 150?nm thick GaN channel within stacked Al{sub x}Ga{sub 1?x}N layers were investigated using Raman thermography. By fitting a thermal simulation to the measured temperatures, the thermal conductivity of the GaN channel was determined to be 60?W m{sup ?1} K{sup ?1}, over 50% less than typical GaN epilayers, causing an increased peak channel temperature. This agrees with a nanoscale model. A low thermal conductivity AlGaN buffer means the GaN spreads heat; its properties are important for device thermal characteristics. When designing power devices with thin GaN layers, as well as electrical considerations, the reduced channel thermal conductivity must be considered.

  12. Maximizing Power Output in Homogeneous Charge Compression Ignition (HCCI) Engines and Enabling Effective Control of Combustion Timing

    E-Print Network [OSTI]

    Saxena, Samveg

    2011-01-01T23:59:59.000Z

    and Yang, Y. , “Boosted HCCI for High Power Output withoutand emissions in a HCCI engine for power generation”, Energythe synergy with a gasoline HCCI engine”, SAE Paper 2011-01-

  13. How Data Center Size Impacts the Effectiveness of Dynamic Power Anshul Gandhi and Mor Harchol-Balter

    E-Print Network [OSTI]

    adversely affect system performance. Thus, it is not obvious whether dynamic power management should they are not in use. This is known as dynamic power management. However, turning off servers necessitates a high setup power. As an example, for the Intel Xeon E5520 servers in our lab, the setup cost required to turn

  14. Tidal power

    SciTech Connect (OSTI)

    Hammons, T.J. (Glasgow Univ., Scotland (United Kingdom))

    1993-03-01T23:59:59.000Z

    The paper reviews the physics of tidal power considering gravitational effects of moon and sun; semidiurnal, diurnal, and mixed tides; and major periodic components that affect the tidal range. Shelving, funneling, reflection, and resonance phenomena that have a significant effect on tidal range are also discussed. The paper then examines tidal energy resource for principal developments estimated from parametric modeling in Europe and worldwide. Basic parameters that govern the design of tidal power schemes in terms of mean tidal range and surface area of the enclosed basin are identified. While energy extracted is proportional to the tidal amplitude squared, requisite sluicing are is proportional to the square root of the tidal amplitude. Sites with large tidal amplitudes are therefore best suited for tidal power developments, whereas sites with low tidal amplitudes have sluicing that may be prohibitive. It is shown that 48% of the European tidal resource is in the United Kingdom, 42% in France and 8% in Ireland, other countries having negligible potential. Worldwide tidal resource is identified. Tidal barrage design and construction using caissons is examined, as are alternative operating modes (single-action generation, outflow generation, flood generation, two-way generation, twin basin generation, pumping, etc), development trends and possibilities, generation cost at the barrage boundary, sensitivity to discount rates, general economics, and markets. Environmental effects, and institutional constraints to the development of tidal barrage schemes are also discussed.

  15. Ring effect on helical twisting power of optically active mesogenic esters derived from benzene, bicyclo[2.2.2]octane and p-carborane carboxylic

    E-Print Network [OSTI]

    Kaszynski, Piotr

    additive to generate a helical phase is defined as helical twisting power (HTP) or bM (yp21 factors that affect the value of HTP. The emerging picture suggests that the most effective dopants'' for induction of a helical structure, and that higher ``biaxiality'' leads to a higher HTP.11 Further

  16. 2013 IREP Symposium-Bulk Power System Dynamics and Control -IX (IREP), August 25-30, 2013, Rethymnon, Greece Effects of Various Uncertainty Sources on

    E-Print Network [OSTI]

    Liberzon, Daniel

    , Rethymnon, Greece Effects of Various Uncertainty Sources on Automatic Generation Control Systems D is the automatic generation control (AGC), which is responsible for maintaining the nominal system frequency2013 IREP Symposium-Bulk Power System Dynamics and Control -IX (IREP), August 25-30, 2013

  17. Studies on the switching speed effect of the phase shift keying in SLED for generating high power microwave

    E-Print Network [OSTI]

    Zhengfeng, Xiong; Jian, Yu; Huaibi, Chen; Hui, Ning

    2015-01-01T23:59:59.000Z

    SLAC energy doubler (SLED) type radio-frequency pulse compressors are widely used in large-scale particle accelerators for converting long-duration moderate-power input pulse into short-duration high-power output pulse. The phase shift keying (PSK) is one of the key components in SLED pulse compression systems. Performance of the PSK will influence the output characteristics of SLED, such as rise-time of the output pulse, the maximal peak power gain, and the energy efficiency. In this paper, high power microwave source based on power combining and pulse compression of conventional klystrons was introduced, the nonideal PSK with slow switching speed and without power output during the switching process were investigated, the experimental results with nonideal PSK agreed well with the analytical results.

  18. Maximizing Power Output in Homogeneous Charge Compression Ignition (HCCI) Engines and Enabling Effective Control of Combustion Timing

    E-Print Network [OSTI]

    Saxena, Samveg

    2011-01-01T23:59:59.000Z

    Experimental study of biogas combustion characteristics andthe operation range of a biogas HCCI engine for powerOperating Conditions in a Biogas Fueled HCCI Engine for

  19. Maximizing Power Output in Homogeneous Charge Compression Ignition (HCCI) Engines and Enabling Effective Control of Combustion Timing

    E-Print Network [OSTI]

    Saxena, Samveg

    2011-01-01T23:59:59.000Z

    Ford Motor Company, “Diesel Engine Aftertreatment: How FordNational Laboratory, “Engine Combustion Network”, http://High Power Output without Engine Knock and with Ultra-Low

  20. Reliable, Efficient and Cost-Effective Electric Power Converter for Small Wind Turbines Based on AC-link Technology

    SciTech Connect (OSTI)

    Darren Hammell; Mark Holveck; DOE Project Officer - Keith Bennett

    2006-08-01T23:59:59.000Z

    Grid-tied inverter power electronics have been an Achilles heel of the small wind industry, providing opportunity for new technologies to provide lower costs, greater efficiency, and improved reliability. The small wind turbine market is also moving towards the 50-100kW size range. The unique AC-link power conversion technology provides efficiency, reliability, and power quality advantages over existing technologies, and Princeton Power will adapt prototype designs used for industrial asynchronous motor control to a 50kW small wind turbine design.

  1. The Effect of Loading on Reactive Market Power Antonio C. Zambroni de Souza Fernando Alvarado Mevludin Glavic

    E-Print Network [OSTI]

    obtained from a market concentration indicator such as HHI) increases as system stress increases competitive power system. There are two alternative ways of estimating market power (or market concentration is not used in this paper. Reactive market concentration indices: In this case the focus is to determine how

  2. Effects of V2G Reactive Power Compensation on the Component Selection in an EV or PHEV Bidirectional Charger

    E-Print Network [OSTI]

    Tolbert, Leon M.

    , electric vehicle, EV, PHEV, reactive power, V2G. I. NOMENCLATURE Vde (t) instantaneous dc link voltage, [VEffects of V2G Reactive Power Compensation on the Component Selection in an EV or PHEV Bidirectional Charger Mithat C. Kisacikoglu1 , Burak Ozpineci2 , and Leon M. Tolbert1 ,2 I Dept. of Electrical

  3. EFFECT OF A HIGH OPACITY ON THE LIGHT CURVES OF RADIOACTIVELY POWERED TRANSIENTS FROM COMPACT OBJECT MERGERS

    SciTech Connect (OSTI)

    Barnes, Jennifer; Kasen, Daniel [Departments of Physics and Astronomy, 366 LeConte Hall, University of California, Berkeley, CA 94720 (United States)

    2013-09-20T23:59:59.000Z

    The coalescence of compact objects is a promising astrophysical source of detectable gravitational wave signals. The ejection of r-process material from such mergers may lead to a radioactively powered electromagnetic counterpart signal which, if discovered, would enhance the science returns. As very little is known about the optical properties of heavy r-process elements, previous light-curve models have adopted opacities similar to those of iron group elements. Here we consider the effect of heavier elements, particularly the lanthanides, which increase the ejecta opacity by several orders of magnitude. We include these higher opacities in time-dependent, multi-wavelength radiative transport calculations to predict the broadband light curves of one-dimensional models over a range of parameters (ejecta masses {approx}10{sup -3}-10{sup -1} M{sub Sun} and velocities {approx}0.1-0.3 c). We find that the higher opacities lead to much longer duration light curves which can last a week or more. The emission is shifted toward the infrared bands due to strong optical line blanketing, and the colors at later times are representative of a blackbody near the recombination temperature of the lanthanides (T {approx} 2500 K). We further consider the case in which a second mass outflow, composed of {sup 56}Ni, is ejected from a disk wind, and show that the net result is a distinctive two component spectral energy distribution, with a bright optical peak due to {sup 56}Ni and an infrared peak due to r-process ejecta. We briefly consider the prospects for detection and identification of these transients.

  4. Intra-Set Rest Intervals in Hypertrophic Training: Effects on Hypertrophy, Strength, Power, and Myosin Heavy Chain Composition 

    E-Print Network [OSTI]

    Oliver, Jonathan

    2012-10-19T23:59:59.000Z

    +/- 245, 704 +/- 233, 723 +/- 227, 830 +/- 232W; ALT 632 +/- 171, 734 +/- 179, 783 +/- 188, 914 +/- 207W; pdesigned to elicit hypertrophy results in greater gains in strength and power...

  5. Renewable energy powered membrane technology. 2. The effect of energy fluctuations on performance of a photovoltaic hybrid membrane system 

    E-Print Network [OSTI]

    Richards, B.S.; Capão, D.P.S.; Schäfer, Andrea

    2008-01-01T23:59:59.000Z

    This paper reports on the performance fluctuations during the operation of a batteryless hybrid ultrafiltration – nanofiltration / reverse osmosis (UF-NF/RO) membrane desalination system powered by photovoltaics treating ...

  6. A power model of management team restructuring and executive exit in IPO-stage firms: antecedents and performance effects

    E-Print Network [OSTI]

    Li, Jun

    2005-11-01T23:59:59.000Z

    company contexts, recently it has been applied to entrepreneurial settings (see Fiet, Busenitz, Moesel, & Barney, 1997). However, more work needs to be done. In particular, how the power of executives changes over the new venture?s different...

  7. Empirical Analysis of Transmission Power Control Algorithms

    E-Print Network [OSTI]

    Culler, David E.

    Empirical Analysis of Transmission Power Control Algorithms for Wireless Sensor Networks Jaein · Power saving techniques in WSN ­ Duty-cycling, TX-power control, clustering ­ We study effect of TX-power transmission. End-to-end delivery rate TX Power Control Best of Fixed TX Power El Batt [1] 36.5% 35.5% PCBL [6

  8. Effects

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA :Work4/11ComputationalEdNERSC:Effect of0/2002Effects of

  9. Study of the Effects of Ambient Conditions Upon the Performance of Fan Powered, Infrared Natural Gas Burners

    SciTech Connect (OSTI)

    Clark Atlanta University

    2002-12-02T23:59:59.000Z

    The objective of this investigation was to characterize the operation of a fan-powered, infrared burner (IR burner) at various gas compositions and ambient conditions, develop numerical model to simulate the burner performances, and provide design guidelines for appliances containing PIR burners for satisfactory performance.

  10. The effect of wind speed fluctuations on the performance of a wind-powered membrane system for brackish water desalination 

    E-Print Network [OSTI]

    Park, Gavin L.; Schäfer, Andrea; Richards, Bryce S.

    2011-01-01T23:59:59.000Z

    A wind-powered reverse osmosis membrane (wind-membrane) system without energy storage was tested using synthetic brackish water (2750 and 5500 mg/L NaCl) over a range of simulated wind speeds under both steady-state and ...

  11. Techno-Economic Feasibility of Highly Efficient Cost-Effective Thermoelectric-SOFC Hybrid Power Generation Systems

    SciTech Connect (OSTI)

    Jifeng Zhang; Jean Yamanis

    2007-09-30T23:59:59.000Z

    Solid oxide fuel cell (SOFC) systems have the potential to generate exhaust gas streams of high temperature, ranging from 400 to 800 C. These high temperature gas streams can be used for additional power generation with bottoming cycle technologies to achieve higher system power efficiency. One of the potential candidate bottoming cycles is power generation by means of thermoelectric (TE) devices, which have the inherent advantages of low noise, low maintenance and long life. This study was to analyze the feasibility of combining coal gas based SOFC and TE through system performance and cost techno-economic modeling in the context of multi-MW power plants, with 200 kW SOFC-TE module as building blocks. System and component concepts were generated for combining SOFC and TE covering electro-thermo-chemical system integration, power conditioning system (PCS) and component designs. SOFC cost and performance models previously developed at United Technologies Research Center were modified and used in overall system analysis. The TE model was validated and provided by BSST. The optimum system in terms of energy conversion efficiency was found to be a pressurized SOFC-TE, with system efficiency of 65.3% and cost of $390/kW of manufacturing cost. The pressurization ratio was approximately 4 and the assumed ZT of the TE was 2.5. System and component specifications were generated based on the modeling study. The major technology and cost barriers for maturing the system include pressurized SOFC stack using coal gas, the high temperature recycle blowers, and system control design. Finally, a 4-step development roadmap is proposed for future technology development, the first step being a 1 kW proof-of-concept demonstration unit.

  12. assisting nuclear power: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Power Control 1 61500 Network Assisted Power Control for Wireless Data David lesson of cellular telephone network operation is that effective power control is essential...

  13. Fuel Cycle Comparison for Distributed Power Technologies

    Fuel Cell Technologies Publication and Product Library (EERE)

    This report examines backup power and prime power systems and addresses the potential energy and environmental effects of substituting fuel cells for existing combustion technologies based on microtur

  14. Microwave Ablation of Porcine Kidneys in vivo: Effect of two Different Ablation Modes ('Temperature Control' and 'Power Control') on Procedural Outcome

    SciTech Connect (OSTI)

    Sommer, C. M., E-mail: christof.sommer@med.uni-heidelberg.de [University Hospital Heidelberg, Department of Diagnostic and Interventional Radiology (Germany); Arnegger, F. [University Hospital Heidelberg, Department of General, Abdominal and Transplantation Surgery (Germany); Koch, V.; Pap, B.; Holzschuh, M.; Bellemann, N. [University Hospital Heidelberg, Department of Diagnostic and Interventional Radiology (Germany); Gehrig, T.; Senft, J.; Nickel, F. [University Hospital Heidelberg, Department of General, Abdominal and Transplantation Surgery (Germany); Mogler, C. [University Hospital Heidelberg, Department of General Pathology (Germany); Zelzer, S.; Meinzer, H. P. [German Cancer Research Center, Division of Medical and Biological Informatics (Germany); Stampfl, U.; Kauczor, H. U.; Radeleff, B. A. [University Hospital Heidelberg, Department of Diagnostic and Interventional Radiology (Germany)

    2012-06-15T23:59:59.000Z

    Purpose: This study was designed to analyze the effect of two different ablation modes ('temperature control' and 'power control') of a microwave system on procedural outcome in porcine kidneys in vivo. Methods: A commercially available microwave system (Avecure Microwave Generator; MedWaves, San Diego, CA) was used. The system offers the possibility to ablate with two different ablation modes: temperature control and power control. Thirty-two microwave ablations were performed in 16 kidneys of 8 pigs. In each animal, one kidney was ablated twice by applying temperature control (ablation duration set point at 60 s, ablation temperature set point at 96 Degree-Sign C, automatic power set point; group I). The other kidney was ablated twice by applying power control (ablation duration set point at 60 s, ablation temperature set point at 96 Degree-Sign C, ablation power set point at 24 W; group II). Procedural outcome was analyzed: (1) technical success (e.g., system failures, duration of the ablation cycle), and (2) ablation geometry (e.g., long axis diameter, short axis diameter, and circularity). Results: System failures occurred in 0% in group I and 13% in group II. Duration of the ablation cycle was 60 {+-} 0 s in group I and 102 {+-} 21 s in group II. Long axis diameter was 20.3 {+-} 4.6 mm in group I and 19.8 {+-} 3.5 mm in group II (not significant (NS)). Short axis diameter was 10.3 {+-} 2 mm in group I and 10.5 {+-} 2.4 mm in group II (NS). Circularity was 0.5 {+-} 0.1 in group I and 0.5 {+-} 0.1 in group II (NS). Conclusions: Microwave ablations performed with temperature control showed fewer system failures and were finished faster. Both ablation modes demonstrated no significant differences with respect to ablation geometry.

  15. Topographic power spectral density study of the effect of surface treatment processes on niobium for superconducting radio frequency accelerator cavities

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Xu, Chen; Tian, Hui; Reece, Charles E.; Kelley, Michael J.

    2012-04-01T23:59:59.000Z

    Microroughness is viewed as a critical issue for attaining optimum performance of superconducting radio frequency accelerator cavities. The principal surface smoothing methods are buffered chemical polish (BCP) and electropolish (EP). The resulting topography is characterized by atomic force microscopy (AFM). The power spectral density (PSD) of AFM data provides a more thorough description of the topography than a single-value roughness measurement. In this work, one dimensional average PSD functions derived from topography of BCP and EP with different controlled starting conditions and durations have been fitted with a combination of power law, K correlation, and shifted Gaussian models to extract characteristic parameters at different spatial harmonic scales. While the simplest characterizations of these data are not new, the systematic tracking of scale-specific roughness as a function of processing is new and offers feedback for tighter process prescriptions more knowledgably targeted at beneficial niobium topography for superconducting radio frequency applications.

  16. EIS-0102: Bonneville Power Administration's 1983 Wholesale Power Rate

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy's Bonneville Power Administration prepared this EIS to evaluate the potential environmental impacts associated with an increase in wholesale power rates that would become effective on November 1, 1983, including the effects of rate hikes in that year and the cumulative effects of previous rate hikes.

  17. Modeling the effects of maintenance on the degradation of a water-feeding turbo-pump of nuclear power plant

    E-Print Network [OSTI]

    Boyer, Edmond

    of the components, which derives from the particular `life' (failures, shocks, preventive maintenance actionsModeling the effects of maintenance on the degradation of a water-feeding turbo-pump of nuclear Abstract: This work addresses the modeling of the effects of maintenance on the degradation of an electric

  18. Study to assess the effects of high-altitude electromagnetic pulse on electric power systems. Phase I, final report

    SciTech Connect (OSTI)

    Legro, J.R.; Abi-Samra, N.C.; Crouse, J.C.; Hileman, A.R.; Kruse, V.J.; Taylor, E.R. Jr.; Tesche, F.M.

    1986-02-01T23:59:59.000Z

    The high-altitude burst of a nuclear device over the continental United States can expose civilian electric utility systems to transient electromagnetic pulses (EMP). The electromagnetic fields experienced within one second after the burst have been collectively defined by the term high-altitude EMP (HEMP). The phenomena has been subdivided, for this report, into an early-time HEMP field followed by an intermediate-time HEMP field. This volume documents a preliminary research effort to: investigate the nature and coupling of the HEMP environments to electric power systems, define the construction of approximate system response models, and document the development of a methodology to assess equipment and system vulnerability.

  19. Effects of radio-frequency driving power, gas pressure, and nitrogen seeding on the transition dynamics in argon inductively coupled plasmas

    SciTech Connect (OSTI)

    Razzak, M. Abdur; Takamura, Shuichi; Uesugi, Yoshihiko [Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603 (Japan); Department of Electrical and Electronic Engineering, Kanazawa University 2-40-20 Kodatsuno, Ishikawa 920-8667 (Japan)

    2004-11-01T23:59:59.000Z

    The influences of rf driving power, neutral gas pressure, and nitrogen seeding on the electrostatic-to-electromagnetic (E-H) mode transition dynamics in radio-frequency argon inductively coupled plasmas (ICPs) in a pressure range of 50-100 kPa are investigated, both experimentally and theoretically. The E-H mode transition dynamics and its characteristic transition time scale are investigated by observing the high-speed imaging (13 500 fps) as well as the temporal change of plasma loading impedance. The experimental results reveal that the E-H mode transition time is not fixed at any operating conditions rather it depends on some important parameters such as the rf driving power, neutral gas pressure, gas type. It is found that the E-H mode transition time depends on the unique parameter E{sub {theta}}/p; the so-called effective induced electric field, rather than the independent parameter: the rf power or neutral gas pressure. It is also found that longer E-H mode transition time is required to ignite the high-pressure Ar-N{sub 2} plasmas with a 2.5%-10% N{sub 2} seeding than that of pure Ar plasmas with the same operating conditions. The experimental results are compared with that of the recently developed theoretical models, and a good agreement is found between them.

  20. Study of the effects of ambient conditions upon the performance of fam powered, infrared, natural gas burners

    SciTech Connect (OSTI)

    Bai, Tiejun

    1996-10-01T23:59:59.000Z

    The objective of this investigation is to characterize the operation of a fan powered infrared burner (PIR burner) at various gas compositions and ambient conditions and develop design guidelines for appliances containing PIR burners for satisfactory performance. The fan powered infrared burner is a technology introduced more recently in the residential and commercial markets. It is a surface combustor that elevates the temperature of the burner head to a radiant condition. A variety of metallic and ceramic materials are used for the burner heads. It has been demonstrated that infrared burners produce low CO and NO{sub x} emissions in a controlled geometric space. This project consists of both experimental research and numerical analysis. To conduct the experiments, an experimental setup has been developed and installed in the Combustion Laboratory at Clerk Atlanta University (CAU). This setup consists of a commercial deep fat fryer that has been modified to allow in-situ radiation measurements on the surface of the infrared burner via a view port installed on the side wall of the oil vat. Proper instrumentation including fuel/air flow rate measurement, exhaust gas emission measurement, and radiation measurement has been developed. The project is progressing well. The scheduled tasks for this period of time were conducted smoothly. Specifically: 1. Baseline experimental study at CAU has been completed. The data are now under detailed analysis and will be reported in next quarterly report. 2. Theoretical formulation and analysis of the PIR burner performance model are continuing. Preliminary results have been obtained.

  1. U.S. Department of Energy Solar Decathlon: Challenging Students to Build Energy Efficient, Cost-Effective, and Attractive Solar-Powered Houses

    SciTech Connect (OSTI)

    Simon, J.

    2012-01-01T23:59:59.000Z

    The U.S. Department of Energy Solar Decathlon challenges collegiate teams to design, build, and operate solar-powered houses that are cost-effective, energy-efficient, and attractive. The winner of the competition is the team that best blends affordability, consumer appeal, and design excellence with optimal energy production and maximum efficiency. The paper discusses the solutions developed for the event. We believe that the solutions implemented for Solar Decathlon 2011 represent current trends and that by analyzing, critiquing, and exposing the solutions pursued, the industry can become better suited to address challenges of the future. Constructing a solar community using high-efficiency design and unique materials while remaining code compliant, safe, and effective results in solutions that are market relevant, important, and interesting to the industry as a whole.

  2. Vehicle Technologies Office Merit Review 2015: Cost-Effective Fabrication of High-Temperature Ceramic Capacitors for Power Inverters

    Broader source: Energy.gov [DOE]

    Presentation given by Argonne National Laboratory at 2015 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about cost-effective...

  3. Proceedings of a Topical Meeting On Small Scale Geothermal Power Plants and Geothermal Power Plant Projects

    SciTech Connect (OSTI)

    None

    1986-02-12T23:59:59.000Z

    These proceedings describe the workshop of the Topical Meeting on Small Scale Geothermal Power Plants and Geothermal Power Plant Projects. The projects covered include binary power plants, rotary separator, screw expander power plants, modular wellhead power plants, inflow turbines, and the EPRI hybrid power system. Active projects versus geothermal power projects were described. In addition, a simple approach to estimating effects of fluid deliverability on geothermal power cost is described starting on page 119. (DJE-2005)

  4. An Innovative System for the Efficient and Effective Treatment of Non-Traditional Waters for Reuse in Thermoelectric Power Generation

    SciTech Connect (OSTI)

    John Rodgers; James Castle

    2008-08-31T23:59:59.000Z

    This study assessed opportunities for improving water quality associated with coal-fired power generation including the use of non-traditional waters for cooling, innovative technology for recovering and reusing water within power plants, novel approaches for the removal of trace inorganic compounds from ash pond effluents, and novel approaches for removing biocides from cooling tower blowdown. This research evaluated specifically designed pilot-scale constructed wetland systems for treatment of targeted constituents in non-traditional waters for reuse in thermoelectric power generation and other purposes. The overall objective of this project was to decrease targeted constituents in non-traditional waters to achieve reuse criteria or discharge limitations established by the National Pollutant Discharge Elimination System (NPDES) and Clean Water Act (CWA). The six original project objectives were completed, and results are presented in this final technical report. These objectives included identification of targeted constituents for treatment in four non-traditional water sources, determination of reuse or discharge criteria for treatment, design of constructed wetland treatment systems for these non-traditional waters, and measurement of treatment of targeted constituents in non-traditional waters, as well as determination of the suitability of the treated non-traditional waters for reuse or discharge to receiving aquatic systems. The four non-traditional waters used to accomplish these objectives were ash basin water, cooling water, flue gas desulfurization (FGD) water, and produced water. The contaminants of concern identified in ash basin waters were arsenic, chromium, copper, mercury, selenium, and zinc. Contaminants of concern in cooling waters included free oxidants (chlorine, bromine, and peroxides), copper, lead, zinc, pH, and total dissolved solids. FGD waters contained contaminants of concern including arsenic, boron, chlorides, selenium, mercury, chemical oxygen demand (COD), and zinc. Similar to FGD waters, produced waters contained contaminants of concern that are predominantly inorganic (arsenic, cadmium, chlorides, chromium, copper, lead, mercury, nickel, sulfide, zinc, total dissolved solids), but also contained some organics (benzene, PAHs, toluene, total organic carbon, total suspended solids, and oil and grease). Constituents of concern that may cause chemical scaling, biofouling and corrosion, such as pH, hardness and ionic strength, and nutrients (P, K, and N) may also be found in all four non-traditional waters. NPDES permits were obtained for these non-traditional waters and these permit limits are summarized in tabular format within this report. These limits were used to establish treatment goals for this research along with toxicity values for Ceriodaphnia dubia, water quality criteria established by the US EPA, irrigation standards established by the United States Department of Agriculture (USDA), and reuse standards focused on minimization of damage to the power plant by treated waters. Constructed wetland treatment systems were designed for each non-traditional water source based on published literature reviews regarding remediation of the constituents of concern, biogeochemistry of the specific contaminants, and previous research. During this study, 4 non-traditional waters, which included ash basin water, cooling water, FGD water and produced water (PW) were obtained or simulated to measure constructed wetland treatment system performance. Based on data collected from FGD experiments, pilot-scale constructed wetland treatment systems can decrease aqueous concentrations of elements of concern (As, B, Hg, N, and Se). Percent removal was specific for each element, including ranges of 40.1% to 77.7% for As, 77.6% to 97.8% for Hg, 43.9% to 88.8% for N, and no measureable removal to 84.6% for Se. Other constituents of interest in final outflow samples should have aqueous characteristics sufficient for discharge, with the exception of chlorides (<2000 mg/L). Based on total dissolved solids, co-

  5. Study to assess the effects of magnetohydrodynamic electromagnetic pulse on electric power systems. Phase I, final report. Volume 3

    SciTech Connect (OSTI)

    Legro, J.R.; Abi-Samra, N.C.; Tesche, F.M.

    1985-05-01T23:59:59.000Z

    In addition to the initial transients designated as fast transient high-altitude EMP (HEMP) and intermediate time EMP, electromagnetic signals are also perceived at times from seconds to hundreds of seconds after a high-altitude nuclear burst. This signal has been defined by the term magnetohydrodynamic-electromagnetic pulse (MHD-EMP). The MHD-EMP phenomena has been both detected in actual weapon tests and predicted from theoretical models. This volume documents a preliminary research effort to investigate the nature and coupling of the MHD-EMP environments to electric power systems, define the construction of approximate system response network models, and document the development of a unified methodology to assess equipment and systematic vulnerability. The MHD-EMP environment is compared to a qualitatively similar natural event, the electromagnetic environment produced by geomagnetic storms.

  6. Intra-Set Rest Intervals in Hypertrophic Training: Effects on Hypertrophy, Strength, Power, and Myosin Heavy Chain Composition

    E-Print Network [OSTI]

    Oliver, Jonathan

    2012-10-19T23:59:59.000Z

    The purpose of this study was to compare the effects of intra-set rest intervals (ALT) and traditional resistance (STD) training in hypertrophic resistance training. 22 males (25 +/- 5yrs, 179.71 +/- 5.0cm, 82.1 +/- 10.6kg, 13.6 +/- 4.3% fat, 6...

  7. Power Reliability at BASF Corporation

    E-Print Network [OSTI]

    Theising, T. R.

    2011-01-01T23:59:59.000Z

    Power Reliability at BASF Corporation Thomas R. Theising Energy Systems Manager BASF Corporation ABSTRACT: Quality is defined not as what the supplier puts into the product but what the customer gets out and is willing to pay for. Power.... INTRODUCTION: BASF often identifies its? power quality by the effects it has on its ability to manufacture products. Improvements are made to remedy the power quality problems either through the elimination of the problems or through some means...

  8. Power Reliability at BASF Corporation

    E-Print Network [OSTI]

    Theising, T. R.

    2012-01-01T23:59:59.000Z

    Power Reliability at BASF Corporation Thomas R. Theising Energy Systems Manager BASF Corporation ABSTRACT: Quality is defined not as what the supplier puts into the product but what the customer gets out and is willing to pay for. Power.... INTRODUCTION: BASF often identifies its? power quality by the effects it has on its ability to manufacture products. Improvements are made to remedy the power quality problems either through the elimination of the problems or through some means...

  9. Nuclear Power

    E-Print Network [OSTI]

    Vilhena and Bardo E.J. Bodmann Carbon-#1;? in Terrestrial and Aquatic Environment of Ignalina Nuclear Power Plant: Sources of Production, Releases and Dose Estimates #3;?? Jonas Mazeika Impact of radionuclide discharges from Temel?n Nuclear Power... (chapter 5), ? Instrumentation and control (chapter 6), ? Diagnostics (chapter 7), ? Safety evaluation methods (chapters 6, 8, 9 and 10), ? Environment and nuclear power plants (chapters 11 - 15), ? Human factors (chapter 16), ? Software development...

  10. BEFORE THE PUBLIC SERVICE COMMISSION OF THE STATE OF DELAWARE

    E-Print Network [OSTI]

    Firestone, Jeremy

    GENERATION RESOURCES UNDER 26 DEL. C. § 1007(d) (OPENED JULY 25, 2006) ASSESSMENT OF POWER PURCHASE AGREEMENTCauley Lyman LLC PSC DOCKET NO. 06-241 December 13, 2007 #12;ASSESSMENT OF POWER PURCHASE AGREEMENT BETWEEN to RPS Requirements #12;ASSESSMENT OF POWER PURCHASE AGREEMENT BETWEEN DELMARVA POWER AND BLUEWATER WIND

  11. Confirmation of the Copernican principle at Gpc radial scale and above from the kinetic Sunyaev Zel'dovich effect power spectrum

    SciTech Connect (OSTI)

    Zhang, Pengjie; Stebbins, Albert

    2010-09-01T23:59:59.000Z

    The Copernican principle, a cornerstone of modern cosmology, remains largely unproven at Gpc radial scale and above. Violations of this type will inevitably cause a first order anisotropic kinetic Sunyaev Zel'dovich (kSZ) effect. Here we show that, if large scale radial inhomogeneities have amplitude large enough to explain the 'dark energy' phenomena, the induced kSZ power spectrum will be orders of magnitude larger than the ACT/SPT upper limit. This single test rules out the void model as a viable alternative to dark energy to explain the apparent cosmic acceleration, confirms the Copernican principle on Gpc radial scale and above and closes a loophole in the standard cosmology.

  12. Recovery and Resilience After a Nuclear Power Plant Disaster: A Medical Decision model for Managing an Effective, Timely, and Balanced Response

    SciTech Connect (OSTI)

    Coleman, C. Norman [National Cancer Institute, NIH; Blumenthal, Daniel J. [National Nuclear Security Administration (NNSA), Department of Energy

    2013-05-01T23:59:59.000Z

    Based on experiences in Tokyo responding to the Fukushima Daiichi nuclear power plant crisis, a real-time, medical decision model is presented by which to make key health-related decisions given the central role of health and medical issues in such disasters. Focus is on response and recovery activities that are safe, timely, effective, and well-organized. This approach empowers on-site decision makers to make interim decisions without undue delay using readily available and high-level scientific, medical, communication, and policy expertise. Key features of this approach include ongoing assessment, consultation, information, and adaption to the changing conditions. This medical decision model presented is compatible with the existing US National Response Framework structure.

  13. The Power of Non-Uniform Wireless Power Magnus M. Halldorsson

    E-Print Network [OSTI]

    The Power of Non-Uniform Wireless Power Magn´us M. Halld´orsson Stephan Holzer Pradipta Mitra Roger model when power control is available. This measure characterizes the effectiveness of using oblivious power -- when the power used by a transmitter only depends on the distance to the receiver

  14. Power system

    DOE Patents [OSTI]

    Hickam, Christopher Dale (Glasford, IL)

    2008-03-18T23:59:59.000Z

    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.

  15. PowerChoice Residential Customer Response to TOU Rates

    E-Print Network [OSTI]

    Peters, Jane S.

    2010-01-01T23:59:59.000Z

    price effects were detected for single-family PowerChoice participant households: increased electricity

  16. Strathclyde powerS ahead

    E-Print Network [OSTI]

    Mottram, Nigel

    Strathclyde powerS ahead the future of renewable energy SHARING AND ENHANCING RESEARCH Discover the vision of Principal Professor Jim McDonald THE FUTURE OF ENERGY Strathclyde pioneers renewableEdicinE Snapshot the reSearcher Following a decade of environmental research in her native egypt, nabila saleem

  17. Bulk Power System Dynamics and Control V, August 26-31, 2001, Onomichi, Japan Strong Resonance Effects in Normal Form Analysis

    E-Print Network [OSTI]

    Dobson, Ian

    Bulk Power System Dynamics and Control V, August 26-31, 2001, Onomichi, Japan Strong Resonance resonance occurring in the power system linearization. Moreover, the changes in the coefficients when the power system equa- tions are expressed in different coordinates or units show that the coefficients

  18. A methodology to identify and quantify mobility-reducing defects in 4H-silicon carbide power metal-oxide-semiconductor field-effect transistors

    SciTech Connect (OSTI)

    Ettisserry, D. P., E-mail: deva@umd.edu; Goldsman, N. [Department of Electrical and Computer Engineering, University of Maryland, College Park, Maryland 20742 (United States); Lelis, A. [U.S. Army Research Laboratory, 2800 Powder Mill Road, Adelphi, Maryland 20783 (United States)

    2014-03-14T23:59:59.000Z

    In this paper, we present a methodology for the identification and quantification of defects responsible for low channel mobility in 4H-Silicon Carbide (SiC) power metal-oxide-semiconductor field-effect transistors (MOSFETs). To achieve this, we use an algorithm based on 2D-device simulations of a power MOSFET, density functional simulations, and measurement data. Using physical modeling of carrier mobility and interface traps, we reproduce the experimental I-V characteristics of a 4H-SiC doubly implanted MOSFET through drift-diffusion simulation. We extract the position of Fermi level and the occupied trap density as a function of applied bias and temperature. Using these inputs, our algorithm estimates the number of possible trap types, their energy levels, and concentrations at 4H-SiC/SiO{sub 2} interface. Subsequently, we use density functional theory (DFT)-based ab initio simulations to identify the atomic make-up of defects causing these trap levels. We study silicon vacancy and carbon di-interstitial defects in the SiC side of the interface. Our algorithm indicates that the D{sub it} spectrum near the conduction band edge (3.25?eV) is composed of three trap types located at 2.8–2.85?eV, 3.05?eV, and 3.1–3.2?eV, and also calculates their densities. Based on DFT simulations, this work attributes the trap levels very close to the conduction band edge to the C di-interstitial defect.

  19. Policy Issues for Retail Beamed Power Transmission

    E-Print Network [OSTI]

    solar electric power using retail delivery of beamed power. Recent advances in power beaming have made to enable widespread adoption of this clean and sustainable contribution to meeting energy needs. It is seen to micro-renewable energy resource exploitation since wired power transmission is only cost effective over

  20. Power combiner

    DOE Patents [OSTI]

    Arnold, Mobius; Ives, Robert Lawrence

    2006-09-05T23:59:59.000Z

    A power combiner for the combining of symmetric and asymmetric traveling wave energy comprises a feed waveguide having an input port and a launching port, a reflector for reflecting launched wave energy, and a final waveguide for the collection and transport of launched wave energy. The power combiner has a launching port for symmetrical waves which comprises a cylindrical section coaxial to the feed waveguide, and a launching port for asymmetric waves which comprises a sawtooth rotated about a central axis.

  1. BEFORE THE PUBLIC SERVICE COMMISSION OF THE STATE OF DELAWARE

    E-Print Network [OSTI]

    Firestone, Jeremy

    ......................................................................................................... 34 VI. ISSUES ASSOCIATED WITH LONG-TERM POWER PURCHASES OR SELF-BUILD GENERATION") for the purchase of power under long-term contrac PLANNING FOR THE PROVISION OF STANDARD OFFER SERVICE BY DELMARVA POWER & LIGHT COMPANY UNDER 26 DEL C

  2. Structural Vulnerability Assessment of Electric Power Grids

    E-Print Network [OSTI]

    Koç, Yakup; Kooij, Robert E; Brazier, Frances M T

    2013-01-01T23:59:59.000Z

    Cascading failures are the typical reasons of black- outs in power grids. The grid topology plays an important role in determining the dynamics of cascading failures in power grids. Measures for vulnerability analysis are crucial to assure a higher level of robustness of power grids. Metrics from Complex Networks are widely used to investigate the grid vulnerability. Yet, these purely topological metrics fail to capture the real behaviour of power grids. This paper proposes a metric, the effective graph resistance, as a vulnerability measure to de- termine the critical components in a power grid. Differently than the existing purely topological measures, the effective graph resistance accounts for the electrical properties of power grids such as power flow allocation according to Kirchoff laws. To demonstrate the applicability of the effective graph resistance, a quantitative vulnerability assessment of the IEEE 118 buses power system is performed. The simulation results verify the effectiveness of the effect...

  3. Evaluation of the Biological Effects of the Northwest Power Conservation Council's Mainstem Amendment on the Fisheries Upstream and Downstream of Libby Dam, Montana, 2007-2008 Annual Report.

    SciTech Connect (OSTI)

    Sylvester, Ryan; Stephens, Brian; Tohtz, Joel [Montana Fish, Wildlife & Parks

    2009-04-03T23:59:59.000Z

    A new project began in 2005 to monitor the biological and physical effects of improved operations of Hungry Horse and Libby Dams, Montana, called for by the Northwest Power and Conservation Council (NPCC) Mainstem Amendment. This operating strategy was designed to benefit resident fish impacted by hydropower and flood control operations. Under the new operating guidelines, July through September reservoir drafts will be limited to 10 feet from full pool during the highest 80% of water supply years and 20 feet from full pool during the lowest 20% of water supply (drought) years. Limits were also established on how rapidly discharge from the dams can be increased or decreased depending on the season. The NPCC also directed the federal agencies that operate Libby and Hungry Horse Dams to implement a new flood control strategy (VARQ) and directed Montana Fish, Wildlife & Parks to evaluate biological responses to this operating strategy. The Mainstem Amendment operating strategy has not been fully implemented at the Montana dams as of June 2008 but the strategy will be implemented in 2009. This report highlights the monitoring methods used to monitor the effects of the Mainstem Amendment operations on fishes, habitat, and aquatic invertebrates upstream and downstream of Libby Dam. We also present initial assessments of data and the effects of various operating strategies on physical and biological components of the systems upstream and downstream of Libby Dam. Annual electrofishing surveys in the Kootenai River and selected tributaries, along with gill net surveys in the reservoir, are being used to quantify the impacts of dam operations on fish populations upstream and downstream of Libby Dam. Scales and otoliths are being used to determine the age structure and growth of focal species. Annual population estimates and tagging experiments provide estimates of survival and growth in the mainstem Kootenai River and selected tributaries. Radio telemetry will be used to validate an existing Instream Flow Incremental Methodology (IFIM) model developed for the Kootenai River and will also be used to assess the effect of changes in discharge on fish movements and habitat use downstream of Libby Dam. Passive integrated transponder (PIT) tags will be injected into rainbow, bull, and cutthroat trout throughout the mainstem Kootenai River and selected tributaries to provide information on growth, survival, and migration patterns in relation to abiotic and biotic variables. Model simulations (RIVBIO) are used to calculate the effects of dam operations on the wetted perimeter and benthic biomass in the Kootenai River below Libby Dam. Additional models (IFIM) will also be used to evaluate the impacts of dam operations on the amount of available habitat for different life stages of rainbow and bull trout in the Kootenai River.

  4. Cleco Power- Power Miser New Home Program

    Broader source: Energy.gov [DOE]

    Louisiana's Cleco Power offers energy efficiency incentives to eligible customers. Cleco Power offers a rate discount for residential customers building homes that meet the Power Miser Program...

  5. Power Systems of the Future

    E-Print Network [OSTI]

    Mario Rabinowitz

    2003-04-30T23:59:59.000Z

    Electric power is a vital ingredient of modern society. This paper in conjunction with previous papers was written to provide an insight into the physics and engineering that go into electric power systems and their modernization. Topics covered here are Direct Current; Superconducting Generators; Energy Storage; Voltage Sags; Grid Stability, Power System Planning and Operations; Biological Effects of Electromagnetic Fields; Dispersed Generation; Information Superhighway Synergy; Distribution Automation; Conclusion.

  6. Effect of input power and gas pressure on the roughening and selective etching of SiO{sub 2}/Si surfaces in reactive plasmas

    SciTech Connect (OSTI)

    Zhong, X. X.; Huang, X. Z. [Department of Physics, State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai 200240 (China); Tam, E.; Ostrikov, K. [Plasma Nanoscience Centre Australia (PNCA), CSIRO Materials Science and Engineering, P. O. Box 218, Lindfield, New South Wales 2070 (Australia); Colpo, P.; Rossi, F. [Institute for Health and Consumer Protection, Joint Research Center of the European Commission, I-21020 Ispra, Varese (Italy)

    2010-09-15T23:59:59.000Z

    We report on the application low-temperature plasmas for roughening Si surfaces which is becoming increasingly important for a number of applications ranging from Si quantum dots to cell and protein attachment for devices such as 'laboratory on a chip' and sensors. It is a requirement that Si surface roughening is scalable and is a single-step process. It is shown that the removal of naturally forming SiO{sub 2} can be used to assist in the roughening of the surface using a low-temperature plasma-based etching approach, similar to the commonly used in semiconductor micromanufacturing. It is demonstrated that the selectivity of SiO{sub 2}/Si etching can be easily controlled by tuning the plasma power, working gas pressure, and other discharge parameters. The achieved selectivity ranges from 0.4 to 25.2 thus providing an effective means for the control of surface roughness of Si during the oxide layer removal, which is required for many advance applications in bio- and nanotechnology.

  7. Effect of oxygen incorporation on the structure and elasticity of Ti-Al-O-N coatings synthesized by cathodic arc and high power pulsed magnetron sputtering

    SciTech Connect (OSTI)

    Hans, M., E-mail: hans@mch.rwth-aachen.de; Baben, M. to; Music, D.; Ebenhöch, J.; Schneider, J. M. [Materials Chemistry, RWTH Aachen University, Kopernikusstr. 10, D-52074 Aachen (Germany); Primetzhofer, D. [Department of Physics and Astronomy, Uppsala University, Lägerhyddsvägen 1, S-75120 Uppsala (Sweden); Kurapov, D.; Arndt, M.; Rudigier, H. [Oerlikon Balzers Coating AG, Iramali 18, LI-9496 Balzers, Principality of Liechtenstein (Liechtenstein)

    2014-09-07T23:59:59.000Z

    Ti-Al-O-N coatings were synthesized by cathodic arc and high power pulsed magnetron sputtering. The chemical composition of the coatings was determined by means of elastic recoil detection analysis and energy dispersive X-ray spectroscopy. The effect of oxygen incorporation on the stress-free lattice parameters and Young's moduli of Ti-Al-O-N coatings was investigated by X-ray diffraction and nanoindentation, respectively. As nitrogen is substituted by oxygen, implications for the charge balance may be expected. A reduction in equilibrium volume with increasing O concentration is identified by X-ray diffraction and density functional theory calculations of Ti-Al-O-N supercells reveal the concomitant formation of metal vacancies. Hence, the oxygen incorporation-induced formation of metal vacancies enables charge balancing. Furthermore, nanoindentation experiments reveal a decrease in elastic modulus with increasing O concentration. Based on ab initio data, two causes can be identified for this: First, the metal vacancy-induced reduction in elasticity; and second, the formation of, compared to the corresponding metal nitride bonds, relatively weak Ti-O and Al-O bonds.

  8. AEP Appalachian Power- Commercial and Industrial Rebate Programs (West Virginia)

    Broader source: Energy.gov [DOE]

    Appalachian Power and Wheeling Power are offering prescriptive incentives under the APCo C&I Prescriptive program to facilitate the implementation of cost-effective energy efficiency...

  9. Cogeneration: An Industrial Steam and Power Option 

    E-Print Network [OSTI]

    Orlando, J. A.; Stewart, M. M.; Roberts, J. R.

    1993-01-01T23:59:59.000Z

    's electric and thermal requirements and not by an external need for power by a utility. These systems can be very cost effective but require considerably more engineering analysis of site conditions than is typical for a Wholesale Power Project...

  10. Power Factor Compensation (PFC) Power Factor Compensation

    E-Print Network [OSTI]

    Knobloch,Jürgen

    Power Factor Compensation (PFC) Power Factor Compensation The power factor (PF) is defined as the ratio between the active power and the apparent power of a system. If the current and voltage are periodic with period , and [ ), then the active power is defined by ( ) ( ) (their inner product

  11. Star Power

    ScienceCinema (OSTI)

    None

    2014-11-18T23:59:59.000Z

    The U.S. Department of Energy's Princeton Plasma Physics Laboratory has released ''Star Power,'' a new informational video that uses dramatic and beautiful images and thought-provoking interviews to highlight the importance of the Laboratory's research into magnetic fusion.

  12. Star Power

    SciTech Connect (OSTI)

    None

    2014-10-17T23:59:59.000Z

    The U.S. Department of Energy's Princeton Plasma Physics Laboratory has released ''Star Power,'' a new informational video that uses dramatic and beautiful images and thought-provoking interviews to highlight the importance of the Laboratory's research into magnetic fusion.

  13. Published in 39th International Symposium on Computer Architecture, June, 2012 Managing Distributed UPS Energy for Effective Power Capping in Data Centers

    E-Print Network [OSTI]

    Wang, Deli

    the lifetime of the data center (capital expenses, or capex) and monthly recur- ring operating expenses (opex) [22]. Capex costs are pro- portional to the provisioned IT power per facility, estimated at $10-20 per of distributed batteries in the data center to reduce both capex and opex costs. Power infrastructure is commonly

  14. EmPower New York

    Broader source: Energy.gov [DOE]

    The primary focus of EmPower New York is to provide cost-effective electric reduction measures, such as replacement of refrigerators and installation of high efficiency lighting. This program also...

  15. Network Assisted Power Control 1 6/15/00 Network Assisted Power Control for Wireless Data

    E-Print Network [OSTI]

    Mandayam, Narayan

    Network Assisted Power Control 1 6/15/00 Network Assisted Power Control for Wireless Data David lesson of cellular telephone network operation is that effective power control is essential to promote system quality and efficiency. In recent we have applied microeconomic theories to power control taking

  16. Control and Optimization Meet the Smart Power Grid: Scheduling of Power Demands for Optimal Energy

    E-Print Network [OSTI]

    Koutsopoulos, Iordanis

    Control and Optimization Meet the Smart Power Grid: Scheduling of Power Demands for Optimal Energy technologies to enforce sensible use of energy through effective demand load management. We envision a scenario con- sumer power demand requests with different power require- ments, durations, and deadlines

  17. EnerNOC Inc. Commercial & Industrial Demand Response

    E-Print Network [OSTI]

    Valley Authority C&I DR: 560 MW Tucson Electric Power C&I DR: 40 MW Xcel Energy (Colorado) C&I DR: 44 MW Baltimore Gas & Electric C&I DR:120 MW Bonneville Power Administration C&I DR: Multiple Pilots Delmarva with 2010 revenues of $280 million 500+ full-time employees Energy Efficiency Industrial EE Program

  18. Power superconducting power transmission cable

    DOE Patents [OSTI]

    Ashworth, Stephen P. (Cambridge, GB)

    2003-01-01T23:59:59.000Z

    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.

  19. Review: Nuclear Power Is Not the Answer by Helen Caldicott

    E-Print Network [OSTI]

    Mirza, Umar Karim

    2007-01-01T23:59:59.000Z

    Review: Nuclear Power Is Not the Answer By Helen CaldicottPakistan. Helen Caldicott. Nuclear Power Is Not the Answer.about the true costs of nuclear power, the health effects of

  20. Incorporating HVDC's into monitoring and power system analysis

    E-Print Network [OSTI]

    Krishnaswamy, Vikram

    2002-01-01T23:59:59.000Z

    This thesis attempts to study the effect of incorporating HVDC's into monitoring and power system analysis. Power system analysis, including load flow and stability studies, and monitoring defines a complete cycle of the impact of HVDC in a power...

  1. Power Right. Power Smart. Efficient Computer Power Supplies and...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    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...

  2. Silicon Valley Power and Oklahoma Municipal Power Authority Win...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Silicon Valley Power and Oklahoma Municipal Power Authority Win 2014 Public Power Wind Awards Silicon Valley Power and Oklahoma Municipal Power Authority Win 2014 Public Power Wind...

  3. Laser satellite power systems

    SciTech Connect (OSTI)

    Walbridge, E.W.

    1980-01-01T23:59:59.000Z

    A laser satellite power system (SPS) converts solar power captured by earth-orbiting satellites into electrical power on the earth's surface, the satellite-to-ground transmission of power being effected by laser beam. The laser SPS may be an alternative to the microwave SPS. Microwaves easily penetrate clouds while laser radiation does not. Although there is this major disadvantage to a laser SPS, that system has four important advantages over the microwave alternative: (1) land requirements are much less, (2) radiation levels are low outside the laser ground stations, (3) laser beam sidelobes are not expected to interfere with electromagnetic systems, and (4) the laser system lends itself to small-scale demonstration. After describing lasers and how they work, the report discusses the five lasers that are candidates for application in a laser SPS: electric discharge lasers, direct and indirect solar pumped lasers, free electron lasers, and closed-cycle chemical lasers. The Lockheed laser SPS is examined in some detail. To determine whether a laser SPS will be worthy of future deployment, its capabilities need to be better understood and its attractiveness relative to other electric power options better assessed. First priority should be given to potential program stoppers, e.g., beam attenuation by clouds. If investigation shows these potential program stoppers to be resolvable, further research should investigate lasers that are particularly promising for SPS application.

  4. Managing Distributed UPS Energy for Effective Power Capping in Data Centers Vasileios Kontorinis*, Liuyi Zhang*, Baris Aksanli*, Jack Sampson*, Houman Homayoun*,

    E-Print Network [OSTI]

    Simunic, Tajana

    Distributed Utility Diesel Generator ATS UPS UPS Server Rack Server Rack PDU Server Rack Server Rack PDU BackupMain Bus-type power network Utility Diesel Generator ATS PDU Server Rack Server Rack Server Rack

  5. Wind power and Wind power and

    E-Print Network [OSTI]

    Wind power and the CDM #12; Wind power and the CDM Emerging practices in developing wind power 2005 Jyoti P. Painuly, Niels-Erik Clausen, Jørgen Fenhann, Sami Kamel and Romeo Pacudan #12; WIND POWER AND THE CDM Emerging practices in developing wind power projects for the Clean Development Mechanism Energy

  6. Sandia National Laboratories: Concentrating Solar Power

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    measuring the effects of aerodynamicheating on radar transmissions ... Concentrating Solar Power (CSP) On April 13, 2011, in CSP R&D at Sandia Testing Facilities Software &...

  7. 20% Wind Energy by 2030 - Chapter 5: Wind Power Siting and Environment...

    Energy Savers [EERE]

    5: Wind Power Siting and Environmental Effects Summary Slides 20% Wind Energy by 2030 - Chapter 5: Wind Power Siting and Environmental Effects Summary Slides Environment and siting...

  8. High power microwave generator

    DOE Patents [OSTI]

    Ekdahl, C.A.

    1983-12-29T23:59:59.000Z

    A microwave generator efficiently converts the energy of an intense relativistic electron beam (REB) into a high-power microwave emission using the Smith-Purcell effect which is related to Cerenkov radiation. Feedback for efficient beam bunching and high gain is obtained by placing a cylindrical Smith-Purcell transmission grating on the axis of a toroidal resonator. High efficiency results from the use of a thin cold annular highly-magnetized REB that is closely coupled to the resonant structure.

  9. Visualization of Power System Data Thomas J. Overbye

    E-Print Network [OSTI]

    Visualization of Power System Data Thomas J. Overbye overbye@ece.uiuc.edu University of Illinois, IL 61801 USA Abstract Effective power system operation requires power system engineers and operators power flows, the scheduled power flows, and the capacity of the transmission system. With restructuring

  10. TEP Power Partners Project [Tucson Electric Power

    SciTech Connect (OSTI)

    None

    2013-11-19T23:59:59.000Z

    The Arizona Governor’s Office of Energy Policy, in partnership with Tucson Electric Power (TEP), Tendril, and Next Phase Energy (NPE), formed the TEP Power Partners pilot project to demonstrate how residential customers could access their energy usage data and third party applications using data obtained from an Automatic Meter Reading (AMR) network. The project applied for and was awarded a Smart Grid Data Access grant through the U.S. Department of Energy. The project participants’ goal for Phase I is to actively engage 1,700 residential customers to demonstrate sustained participation, reduction in energy usage (kWh) and cost ($), and measure related aspects of customer satisfaction. This Demonstration report presents a summary of the findings, effectiveness, and customer satisfaction with the 15-month TEP Power Partners pilot project. The objective of the program is to provide residential customers with energy consumption data from AMR metering and empower these participants to better manage their electricity use. The pilot recruitment goals included migrating 700 existing customers from the completed Power Partners Demand Response Load Control Project (DRLC), and enrolling 1,000 new participants. Upon conclusion of the project on November 19, 2013: ? 1,390 Home Area Networks (HANs) were registered. ? 797 new participants installed a HAN. ? Survey respondents’ are satisfied with the program and found value with a variety of specific program components. ? Survey respondents report feeling greater control over their energy usage and report taking energy savings actions in their homes after participating in the program. ? On average, 43 % of the participants returned to the web portal monthly and 15% returned weekly. ? An impact evaluation was completed by Opinion Dynamics and found average participant savings for the treatment period1 to be 2.3% of their household use during this period.2 In total, the program saved 163 MWh in the treatment period of 2013.

  11. Power Recovery

    E-Print Network [OSTI]

    Murray, F.

    , will be the use of the ASTM Theoretical Steam Rate Tables. In addition, the author's experience regarding the minimum size for power recovery units that are economic in a Culf Coast plant will be presented. INTROD\\Jr.'rION When surveying an operation... will be discussed in detail. Each term in the equation will be considered in English units. Secondly, the use of Mollier diagrams to estimate the enthalphy change between the initial and final conditions will be considered. The last method, specific to steam...

  12. Yakama Power

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron SpinPrincetonUsingWhatY-12 recognized for ...BER/NERSCYakama Power May

  13. Fusion Power

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist.Newof EnergyFunding Opportunity fromFusion Links Fusion

  14. Dynamic Power Management for Nonstationary Service Requests

    E-Print Network [OSTI]

    De Micheli, Giovanni

    Dynamic Power Management for Nonstationary Service Requests Eui-Young Chung, Luca Benini, Alessandro Bogliolo, Yung-Hsiang Lu, and Giovanni De Micheli, Fellow, IEEE Abstract--Dynamic Power Management selective shutdown of idle system resources. The effectiveness of a power management scheme depends

  15. Power management system

    DOE Patents [OSTI]

    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

    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.

  16. Solar powered desalination system

    E-Print Network [OSTI]

    Mateo, Tiffany Alisa

    2011-01-01T23:59:59.000Z

    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

  17. ELECTROCHEMICAL POWER FOR TRANSPORTATION

    E-Print Network [OSTI]

    Cairns, Elton J.

    2012-01-01T23:59:59.000Z

    electric power generating plant, and the distributionrequired on the power-generating plant and not on the vehi-in either power-generating plants or combustion engines,

  18. Southwestern Power Administration

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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

  19. POWER GRID RELIABILITY AND SECURITY

    SciTech Connect (OSTI)

    Bose, Anjan; Venkatasubramanian, Vaithianathan; Hauser, Carl; Bakken, David; Anderson, David; Zhao, Chuanlin; Liu, Dong; Yang, Tao; Meng, Ming; Zhang, Lin; Ning, Jiawei; Tashman, Zaid

    2014-09-30T23:59:59.000Z

    This project has led to the development of a real-time simulation platform for electric power grids called Grid Simulator or GridSim for simulating the dynamic and information network interactions of large- scale power systems. The platform consists of physical models of power system components including synchronous generators, loads and control, which are simulated using a modified commercial power simulator namely Transient Stability Analysis Tool (TSAT) [1] together with data cleanup components, as well as an emulated substation level and wide-area power analysis components. The platform also includes realistic representations of communication network middleware that can emulate the real-time information flow back and forth between substations and control centers in wide-area power systems. The platform has been validated on a realistic 6000-bus model of the western American power system. The simulator GridSim developed in this project is the first of its kind in its ability to simulate real-time response of large-scale power grids, and serves as a cost effective real-time stability and control simulation platform for power industry.

  20. Long-Term Wind Power Variability

    SciTech Connect (OSTI)

    Wan, Y. H.

    2012-01-01T23:59:59.000Z

    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.

  1. Power oscillator

    DOE Patents [OSTI]

    Gitsevich, Aleksandr (Montgomery Village, MD)

    2001-01-01T23:59:59.000Z

    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.

  2. IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 23, NO. 3, AUGUST 2008 1217 Long-Term Effect of the n-1 Criterion on

    E-Print Network [OSTI]

    Dobson, Ian

    Criterion on Cascading Line Outages in an Evolving Power Transmission Grid Hui Ren, Student Member, IEEE, Ian Dobson, Fellow, IEEE, and Benjamin A. Carreras Abstract--Cascading transmission line outages transmission line overloads and outages because they often play a role in large blackouts. For example

  3. Preliminary investigation of the effects of lower hybrid power on asymmetric behaviors in the scrape-off layer in experimental advanced superconducting tokamak

    SciTech Connect (OSTI)

    Zhang, L.; Ding, B. J., E-mail: bjding@ipp.ac.cn; Li, M. H.; Liu, F. K.; Shan, J. F.; Wei, W.; Li, Y. C.; Yang, J. H.; Wu, Z. G.; Liu, L.; Wang, M.; Zhao, L. M.; Ma, W. D.; Xiu, H. D.; Wang, X. J.; Jia, H.; Yang, Y.; Cheng, M.; Wu, D. J.; Xu, L. [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 (China)] [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 (China); and others

    2014-02-15T23:59:59.000Z

    The striations in front of the lower hybrid (LH) launcher have been observed during LH injection by a visible video camera in the Experimental Advanced Superconducting Tokamak. Edge density at the top of the LH launcher tends to be much larger in reversed magnetic field (B{sub t}) than that in the normal B{sub t}. To study the mechanisms of the observations, the diffusive-convective model is employed. Simulations show that the LH power makes the density in scrape-off layer asymmetric in poloidal direction with five density peaks. The locations of the striations are approximately in agreement with the locations of the density peaks in different directions of B{sub t}. Higher LH power strengths the asymmetry of the density and leads to a bad coupling which is in conflict with the experimental results showing a good coupling with a higher power. Furthermore, an ionization term is introduced into this model and the increase of edge density with LH power can be qualitatively explained. The simulations also show that the density peaks in front of the waveguides become clearer when taking into account gas puffing.

  4. Pacific Northwest Electric Power Planning and Conservation Act : Legislative History of the Act to Assist the Electrical Consumers of the Pacific Northwest through use of the Federal Columbia River Power System to Achieve Cost-Effective Energy Conservation : P.L. 96-501, 94 Stat. 2697.

    SciTech Connect (OSTI)

    United States. Bonneville Power Administration.

    1981-01-01T23:59:59.000Z

    The Pacific Northwest Electric Power Planning and Conservation Act became effective when it was signed into law by President Carter on December 5, 1980. This ended a four-year debate over legislation designed to plan and coordinate the region's energy future. This legislative history is an abbreviated version taken from the larger historical file maintained by the BPA Law Library. It is intended to assist BPA personnel and others who are studying the Northwest Power Act and working on its implementation. The documents included were selected for their value in determining what Congress meant in enacting the statute and to provide the researcher with a starting point for further investigation. These documents include: a history of the Act, a chronology of the legislative action leading to passage of the law; a section-by-section analysis of the Act; the Congressional Records of Senate and House debates on the bill and its amendments, and a list of Congressional committee hearings.

  5. The elements of nuclear power

    SciTech Connect (OSTI)

    Bennet, D.J.; Thomson, J.R.

    1989-01-01T23:59:59.000Z

    An introduction to the principles of nuclear fission power generation. Describes the physical processes which occur in a nuclear reactor and discusses the theory behind the calculations. Also covers heat transfer in reactors, thermodynamic power cycles, reactor operators, and radiation shielding. Material covered includes topics on the effects of nuclear radiation on humans, the safety of nuclear reactors and of those parts of the nuclear fuel cycle which deal with fuel element manufacture and the reprocessing of irradiated fuel.

  6. State Sea Grant Program Federal Funding Match Funding Project Titles AK Alaska Sea Grant $255,010 $40,543

    E-Print Network [OSTI]

    Social Dimensions of Offshore Wind Power Development off the Delmarva Peninsula Extending modelsState Sea Grant Program Federal Funding Match Funding Project Titles AK Alaska Sea Grant $255 to Integrate Sea-Level Rise Adaptation into Existing Land Use Plans Marine Extension and Education Graduate

  7. Study of the effects of ambient conditions upon the performance of fan powered, infrared, natural gas burners. Quarterly technical progress report, October 1, 1996--December 31, 1996

    SciTech Connect (OSTI)

    Bai, T.

    1997-01-01T23:59:59.000Z

    This quarterly technical progress report describes work performed under DOE Grant No. DE-FG22-94MT94011 during the period September 1, 1996 to December 31, 1996 which covers the nineth quarter of the project. The objective of this investigation is to characterize the operation of a fan powered infrared burner (IR burner) at various gas compositions and ambient conditions and develop design guidelines for appliances containing PIR burners for satisfactory performance. The fan powered infrared burner is a technology introduced more recently in the residential and commercial markets. It is a surface combustor that elevates the temperature of the burner head to a radiant condition. A variety of metallic and ceramic materials are used for the burner heads. It has been demonstrated that infrared burners produce low CO and NO{sub x} emissions in a controlled geometric space. As the environmental regulations become more stringent, infrared burners are receiving increasing interests.

  8. Primer on Wind Power for Utility Applications

    SciTech Connect (OSTI)

    Wan, Y.

    2005-12-01T23:59:59.000Z

    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.

  9. PowerPoint Presentation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah Project OfficePower49749/10 LOUISIANA STATEFirstPerformance Effect

  10. POWER SYSTEMS DEVELOPMENT FACILITY

    SciTech Connect (OSTI)

    Unknown

    2002-11-01T23:59:59.000Z

    This report discusses test campaign GCT4 of the Kellogg Brown & Root, Inc. (KBR) transport reactor train with a Siemens Westinghouse Power Corporation (Siemens Westinghouse) particle filter system at the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama. The transport reactor is an advanced circulating fluidized-bed reactor designed to operate as either a combustor or a gasifier using one of two possible particulate control devices (PCDs). The transport reactor was operated as a pressurized gasifier during GCT4. GCT4 was planned as a 250-hour test run to continue characterization of the transport reactor using a blend of several Powder River Basin (PRB) coals and Bucyrus limestone from Ohio. The primary test objectives were: Operational Stability--Characterize reactor loop and PCD operations with short-term tests by varying coal-feed rate, air/coal ratio, riser velocity, solids-circulation rate, system pressure, and air distribution. Secondary objectives included the following: Reactor Operations--Study the devolatilization and tar cracking effects from transient conditions during transition from start-up burner to coal. Evaluate the effect of process operations on heat release, heat transfer, and accelerated fuel particle heat-up rates. Study the effect of changes in reactor conditions on transient temperature profiles, pressure balance, and product gas composition. Effects of Reactor Conditions on Synthesis Gas Composition--Evaluate the effect of air distribution, steam/coal ratio, solids-circulation rate, and reactor temperature on CO/CO{sub 2} ratio, synthesis gas Lower Heating Value (LHV), carbon conversion, and cold and hot gas efficiencies. Research Triangle Institute (RTI) Direct Sulfur Recovery Process (DSRP) Testing--Provide syngas in support of the DSRP commissioning. Loop Seal Operations--Optimize loop seal operations and investigate increases to previously achieved maximum solids-circulation rate.

  11. Maybe you've heard about The 7 Habits of Highly Effective People--the best-selling business book of all time. Now you have a chance to implement the 7 Habits in your life by attending an exciting three-day program based on the powerful book.

    E-Print Network [OSTI]

    Cui, Yan

    Maybe you've heard about The 7 Habits of Highly Effective People--the best-selling business book-day program based on the powerful book. The 7 Habits program is the most dynamic training for personal

  12. Transaction Based Power Flow Analysis For Transmission Utilization Allocation

    E-Print Network [OSTI]

    transactions as well as the effect of reactive power on transmission losses and active power flows. Two the electric power industry moves into an era of supply competition and consumer choice, the power system electricity market at the ex ante phase; (ii) MW generations are decided by bilateral contracts and other

  13. Power Systems Engineering Research Center PSERC Background Paper

    E-Print Network [OSTI]

    of opportunities to produce and purchase generation cost-effectively. As a result, thousands of power transfersPower Systems Engineering Research Center PSERC Background Paper Power System Operations little thought to the source of the power that comes out of the electric outlet. And why should they

  14. 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 dpa) § Removes ion threat and mitigates x-ray threat ­ allows simple steel piping § No need

  15. Solar powered desalination system

    E-Print Network [OSTI]

    Mateo, Tiffany Alisa

    2011-01-01T23:59:59.000Z

    are many solar photovoltaic power plants internationally andUSA, Blythe, CA Solar electric power plant, Blythe USA, SanTX Blue Wing solar electric power plant USA, Jacksonville,

  16. Solar powered desalination system

    E-Print Network [OSTI]

    Mateo, Tiffany Alisa

    2011-01-01T23:59:59.000Z

    of the electrical power output to the solar power input), aSolar Energy Calculator using Google Maps 23 Table 1.24: PV System Power Production Average Daily Irradiance (kWh/m2) Instillation Efficiency Labeled Efficiency Output

  17. Electrical Power Quality and Utilisation, Journal Vol. XIII, No. 1, 2007 Physical Interpretation of the Reactive Power

    E-Print Network [OSTI]

    Czarnecki, Leszek S.

    &% Electrical Power Quality and Utilisation, Journal Vol. XIII, No. 1, 2007 Physical Interpretation of the Reactive Power in Terms of the CPC Power Theory LeszekS.CZARNECKI,FellowIEEE,MIEE Louisiana State. Just the opposite, the interpretation of the reactive power Q as an effect of energy

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

    SciTech Connect (OSTI)

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

    1993-11-01T23:59:59.000Z

    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.

  19. PowerPoint Presentation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    April 30, 2013, Santa Clara, CA 2 Outline * Introduction Power Electronics in Electric Drive Vehicles Automotive Power Electronics Module Operation Automotive...

  20. Concentrated Solar Thermoelectric Power

    Broader source: Energy.gov (indexed) [DOE]

    CONCENTRATING SOLAR POWER PROGRAM REVIEW 2013 Concentrated Solar Thermoelectric Power Principal Investigator: Prof. Gang Chen Massachusetts Institute of Technology Cambridge, MA...

  1. TVA- Green Power Providers

    Broader source: Energy.gov [DOE]

    Tennessee Valley Authority (TVA) and participating power distributors of TVA power offer a performance-based incentive program to homeowners and businesses for the installation of renewable...

  2. Electrolytes for power sources

    DOE Patents [OSTI]

    Doddapaneni, N.; Ingersoll, D.

    1995-01-03T23:59:59.000Z

    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.

  3. Electrolytes for power sources

    DOE Patents [OSTI]

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

    1995-01-01T23:59:59.000Z

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

  4. 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...

  5. New Horizons Mission Powered by Space Radioisotope Power Systems...

    Energy Savers [EERE]

    New Horizons Mission Powered by Space Radioisotope Power Systems New Horizons Mission Powered by Space Radioisotope Power Systems January 30, 2008 - 6:47pm Addthis Artist's concept...

  6. Implications of Power Control in Wireless Networks: A Quantitative Study

    E-Print Network [OSTI]

    Krishnamurthy, Srikanth

    Implications of Power Control in Wireless Networks: A Quantitative Study Ioannis Broustis, Jakob of power control in wireless networks can lead to two con- flicting effects. An increase- posite effects. Our primary goal in this work is to understand the implications of power control

  7. M-C Power`s product design and improvement

    SciTech Connect (OSTI)

    Scroppo, J.A.; Laurens, R.M.; Petraglia, V.J.

    1995-12-31T23:59:59.000Z

    The sole mission of M-C Power is the development and subsequent commercialization of molten carbonate fuel cell (MCFC) stacks. These MCFC stacks are based on the Internally Manifolded Heat EXchanger plate design developed by the Institute of Gas Technology. Integration of the MCFC stack into a commercially viable power plant is the mission of the IMHEX{sup {reg_sign}} team. The team is composed of leaders in the packaging and design of power generation equipment, including fuel cell technology, and includes Stewart & Stevenson, Bechtel, The Institute of Gas Technology and M-C Power. In an effort to succeed in their respective missions, M-C Power and the IMHEX{sup {reg_sign}} team have developed a commercialization program. At the present time, the team is making the transition from Phase I (Technology Development) to Phase II (Product Design & Improvement) of the program. Phase II`s objective is a commercially viable (cost effective and technologically reliable) MCFC power plant ready for market by the turn of the century.

  8. Power Conditioning and Control Applications for Energy Conservation

    E-Print Network [OSTI]

    Brushwood, J. S.

    1982-01-01T23:59:59.000Z

    Electrical power conditioning and control (PCC) systems are finding cost effective applications in AC motor drives, lamp ballasts and power supplies. Substantial system efficiency improvements are being realized when the appropriate PCC system...

  9. Wind Farm Aggregation Impact on Power Quality: Preprint

    SciTech Connect (OSTI)

    Bialasiewicz, J. T.; Muljadi, E.

    2006-11-01T23:59:59.000Z

    This paper explores the effects of wind farm power fluctuations on the power network. A dynamic simulation of a wind farm is performed and the spatial distribution of the wind turbines is considered.

  10. Power Series Introduction

    E-Print Network [OSTI]

    Vickers, James

    Power Series 16.4 Introduction In this section we consider power series. These are examples of infinite series where each term contains a variable, x, raised to a positive integer power. We use the ratio test to obtain the radius of convergence R, of the power series and state the important result

  11. Offshore Wind Power USA

    Broader source: Energy.gov [DOE]

    The Offshore Wind Power USA conference provides the latest offshore wind market updates and forecasts.

  12. Agent Program Planning Information Wisdom, Power, Control

    E-Print Network [OSTI]

    Agent Program Planning Information Wisdom, Power, Control (A culturally appropriate type 2 diabetes, Power, Control training (a prerequisite to teach the program). · Market the program to community · Effective glycemic control and early detection are critical to reduce the risk for microvascular

  13. Study of the effects of ambient conditions upon the performance of fan powered, infrared, natural gas burners. Quarterly technical progress report, July 1--September 30, 1995

    SciTech Connect (OSTI)

    Bai, T.; Yeboah, Y.D.; Sampath, R.

    1995-10-01T23:59:59.000Z

    The objective of this investigation is to characterize the operation of fan powered infrared burner (PIR) at various gas compositions and ambient conditions and develop design guidelines for appliances in containing PIR burners for satisfactory performance. During this period, experimental setup with optical and electronic instrumentation that is necessary for measuring the radiant heat output and the emission gas output of the burner has been established. The radiation measurement instrument, an FTIR, has been purchased and installed in the porous burner experimental system. The radiation measurement capability of the FTIR was tested and found to be satisfactory. A standard blackbody source, made by Graseby Infrared, was employed to calibrate the FTIR. A collection duct for emission gas measurement was fabricated and connected to the existing Horiba gas analyzer. Test runs are being conducted for flue gas analysis. A number of published research papers on modeling of porous burners were reviewed. The physical mechanism and theoretical analysis of the combustion process of the PIR burner was formulated. The numerical modeling, and implementation of a PIR burner code at CAU`s computing facility is in progress.

  14. Study of the effects of ambient conditions upon the performance of fan powered, infrared, natural gas burners. Quarterly technical progress report, January 1, 1995--March 31, 1995

    SciTech Connect (OSTI)

    Bai, Tiejun

    1995-04-01T23:59:59.000Z

    The objective of this investigation is to characterize the operation of fan powered infrared (PIR) burner at various barometric pressures (operating altitude) and gas compositions and develop design guidelines for appliances containing PIR burners for satisfactory performance. In this program, the theoretical basis for the behavior of PIR burners will be established through analysis of the combustion, heat and mass transfer, and other related processes that determine the performance of PIR burners. Based on the results of this study, a burner performance model for radiant output will be developed. The model will be applied to predict the performance of the selected burner and will also be modified and improved through comparison with experimental results. During this period, laboratory facilities that are necessary for conducting this research are completed. The student research assistants have started working in the laboratory. The selection of the test burner has completed. The preparation and instrumentation of this test burner is underway. The theoretical analysis and modeling of the fundamental combustion process of the PIR burner is progressing well. A study of the existing models are being conducted, which will yield specific direction and recommendations for the new model to be developed.

  15. Study of the effects of ambient conditions upon the performance of fan powered, infrared, natural gas burners. Quarterly technical progress report, September 1--September 30, 1994

    SciTech Connect (OSTI)

    Bai, T.

    1994-10-01T23:59:59.000Z

    The objective of this investigation is to characterize the operation of fan powered infrared(PIR) burner at various barometric pressures (operating altitude) and gas compositions and develop design guidelines for appliances containing PIR burners for satisfactory performance. In this program, the theoretical basis for the behavior of PIR burners will be established through analysis of the combustion, heat and mass transfer, and other related processes which determine the performance of PIR burners. Based on the results of this study, a first order model of the performance of the burner, including radiant output will be developed. The model will be applied to predict the performance of the selected burner and modified through comparison with test results. Concurrently, an experimental setup will be devised and built. This experimental rig will be a modified appliance, capable of measuring the heat and combustion product output, as well as providing a means by which the radiant heat output can be measured. The burner will be selected from an existing commercial appliance, a commercial deep fat fryer, and will be of a scale that will be compatible with the laboratory facilities in the Combustion Laboratory at Clark Atlanta University. Theoretical analysis and formulation of the PIR burner performance model has been started and the development of the test facilities and experimental setup has also been initiated. These are described.

  16. Dispersed power and renewables

    SciTech Connect (OSTI)

    O`Sullivan, J.B.

    1995-12-31T23:59:59.000Z

    Distributed power generation and renewable energy sources are discussed: The following topics are discussed: distributed resources, distributed generation, commercialization requirements, biomass power, location of existing biomass feedstocks, biomass business plan components, North Carolina BGCC partnership, New York biomass co-firing project, alfalfa for power and feed, Hawaii Pioneer Mill LOI project, next steps for biomass, wind power activity, photovoltaic modules and arrays, lead-acid batteries, superconducting magnetic energy storage, fuel cells, and electric power industry trends.

  17. The Role of Demand Response in Default Service Pricing

    E-Print Network [OSTI]

    Barbose, Galen; Goldman, Chuck; Neenan, Bernie

    2006-01-01T23:59:59.000Z

    service) Implemented by BGE, PEPCO, and Delmarva in JuneRockland PSE&G JCP&L Atlantic PEPCO Delmarva BGE MW Penn.

  18. The Role of Demand Response in Default Service Pricing

    E-Print Network [OSTI]

    Barbose, Galen; Goldman, Charles; Neenan, Bernie

    2008-01-01T23:59:59.000Z

    service) Implemented by BGE, PEPCO, and Delmarva in JuneBGE JCP&L Duquesne Penn. CHG&E PEPCO PSE&G Delmarva Rockland

  19. Solar thermal power system

    DOE Patents [OSTI]

    Bennett, Charles L.

    2010-06-15T23:59:59.000Z

    A solar thermal power generator includes an inclined elongated boiler tube positioned in the focus of a solar concentrator for generating steam from water. The boiler tube is connected at one end to receive water from a pressure vessel as well as connected at an opposite end to return steam back to the vessel in a fluidic circuit arrangement that stores energy in the form of heated water in the pressure vessel. An expander, condenser, and reservoir are also connected in series to respectively produce work using the steam passed either directly (above a water line in the vessel) or indirectly (below a water line in the vessel) through the pressure vessel, condense the expanded steam, and collect the condensed water. The reservoir also supplies the collected water back to the pressure vessel at the end of a diurnal cycle when the vessel is sufficiently depressurized, so that the system is reset to repeat the cycle the following day. The circuital arrangement of the boiler tube and the pressure vessel operates to dampen flow instabilities in the boiler tube, damp out the effects of solar transients, and provide thermal energy storage which enables time shifting of power generation to better align with the higher demand for energy during peak energy usage periods.

  20. Power, status, and learning in organizations

    E-Print Network [OSTI]

    Bunderson, J. Stuart

    This paper reviews the scholarly literature on the effects of social hierarchy—differences in power and status among organizational actors—on collective learning in organizations and groups. We begin with the observation ...

  1. Radial fryers. [Used tire power plants

    SciTech Connect (OSTI)

    Gawlicki, S.M.

    1993-01-01T23:59:59.000Z

    Experience has shown that tires have their limits as a primary power generation fuel. As a supplemental fuel, however, they may prove to be cost effective. This article discusses the use of tires as a alternate fuel source.

  2. Solar thermoelectrics for small scale power generation

    E-Print Network [OSTI]

    Amatya, Reja

    2012-01-01T23:59:59.000Z

    In the past two decades, there has been a surge in the research of new thermoelectric (TE) materials, driven party by the need for clean and sustainable power generation technology. Utilizing the Seebeck effect, the ...

  3. Electric power emergency handbook

    SciTech Connect (OSTI)

    Labadie, J.R.

    1980-09-01T23:59:59.000Z

    The Emergency Electric Power Administration's Emergency Operations Handbook is designed to provide guidance to the EEPA organization. It defines responsibilities and describes actions performed by the government and electric utilities in planning for, and in operations during, national emergencies. The EEPA Handbook is reissued periodically to describe organizational changes, to assign new duties and responsibilities, and to clarify the responsibilities of the government to direct and coordinate the operations of the electric utility industry under emergencies declared by the President. This Handbook is consistent with the assumptions, policies, and procedures contained in the National Plan for Emergency Preparedness. Claimancy and restoration, communications and warning, and effects of nuclear weapons are subjects covered in the appendices.

  4. Thermoelectric power generator with intermediate loop

    DOE Patents [OSTI]

    Bell, Lon E; Crane, Douglas Todd

    2013-05-21T23:59:59.000Z

    A thermoelectric power generator is disclosed for use to generate electrical power from heat, typically waste heat. An intermediate heat transfer loop forms a part of the system to permit added control and adjustability in the system. This allows the thermoelectric power generator to more effectively and efficiently generate power in the face of dynamically varying temperatures and heat flux conditions, such as where the heat source is the exhaust of an automobile, or any other heat source with dynamic temperature and heat flux conditions.

  5. Thermoelectric power generator with intermediate loop

    DOE Patents [OSTI]

    Bel,; Lon E. (Altadena, CA); Crane, Douglas Todd (Pasadena, CA)

    2009-10-27T23:59:59.000Z

    A thermoelectric power generator is disclosed for use to generate electrical power from heat, typically waste heat. An intermediate heat transfer loop forms a part of the system to permit added control and adjustability in the system. This allows the thermoelectric power generator to more effectively and efficiently generate power in the face of dynamically varying temperatures and heat flux conditions, such as where the heat source is the exhaust of an automobile, or any other heat source with dynamic temperature and heat flux conditions.

  6. Active Power Control from Wind Power (Presentation)

    SciTech Connect (OSTI)

    Ela, E.; Brooks, D.

    2011-04-01T23:59:59.000Z

    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.

  7. High power fast ramping power supplies

    SciTech Connect (OSTI)

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

    2009-05-04T23:59:59.000Z

    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.

  8. Study of the effects of ambient conditions upon the performance of fan powered, infrared, natural gas burners. Quarterly report, April 1, 1996 - June 30, 1996

    SciTech Connect (OSTI)

    Bai, T.; Yeboah, Y.D.; Sampath, R.

    1996-07-01T23:59:59.000Z

    A porous radiant burner testing facility consisting of a commercial deep-fat fryer, an FTIR based spectral radiance measurement system, a set of flue gas analysis components, and a fuel gas mixing station was constructed. The measurement capabilities of the system were tested using methane and the test results were found to be consistent with the literature. Following the validation of the measurement system, various gas mixtures were tested to study the effect of gas compositions have on burner performance. Results indicated that the emissions vary with fuel gas composition and air/fuel ratio. The maximum radiant efficiency of the burner was obtained close to air/fuel ratio of 1.

  9. A network approach for power grid robustness against cascading failures

    E-Print Network [OSTI]

    Wang, Xiangrong; Kooij, Robert E; Van Mieghem, Piet

    2015-01-01T23:59:59.000Z

    Cascading failures are one of the main reasons for blackouts in electrical power grids. Stable power supply requires a robust design of the power grid topology. Currently, the impact of the grid structure on the grid robustness is mainly assessed by purely topological metrics, that fail to capture the fundamental properties of the electrical power grids such as power flow allocation according to Kirchhoff's laws. This paper deploys the effective graph resistance as a metric to relate the topology of a grid to its robustness against cascading failures. Specifically, the effective graph resistance is deployed as a metric for network expansions (by means of transmission line additions) of an existing power grid. Four strategies based on network properties are investigated to optimize the effective graph resistance, accordingly to improve the robustness, of a given power grid at a low computational complexity. Experimental results suggest the existence of Braess's paradox in power grids: bringing an additional li...

  10. State power plant productivity programs

    SciTech Connect (OSTI)

    Not Available

    1981-02-01T23:59:59.000Z

    The findings of a working group formed to review the status of efforts by utilities and utility regulators to increase the availability and reliability of generating units are presented. Representatives from nine state regulatory agencies, NRRI, and DOE, participated on the Working Group. The Federal government has been working cooperatively with utilities, utility organizations, and with regulators to encourage and facilitate improvements in power plant productivity. Cooperative projects undertaken with regulatory and energy commissions in California, Illinois, New York, Ohio, Texas, North Carolina and Mighigan are described. Following initiation of these cooperative projects, DOE funded a survey to determine which states were explicitly addressing power plant productivity through the regulatory process. The Working Group was formed following completion of this survey. The Working Group emphasized the need for those power plant productivity improvements which are cost effective. The cost effectiveness of proposed availability improvement projects should be determined within the context of opportunities for operating and capital improvements available to an entire utility. The Working Group also identified the need for: allowing for plant designs that have a higher construction cost, but are also more reliable; allowing for recovery and reducing recovery lags for productivity-related capital expenditures; identifying and reducing disincentives in the regulatory process; ascertaining that utilities have sufficient money available to undertake timely maintenance; and support of EPRI and NERC to develop a relevant and accurate national data base. The DOE views these as extremely important aspects of any regulatory program to improve power plant productivity.

  11. UGP Power Projects

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    wildlife and power generation on the Missouri River. Seven dams and powerplants have the installed capacity of 2,610 MW. That hydroelectric power is delivered across about 7,919...

  12. Residential Wind Power

    E-Print Network [OSTI]

    Willis, Gary

    2011-12-16T23:59:59.000Z

    This research study will explore the use of residential wind power and associated engineering and environmental issues. There is various wind power generating devices available to the consumer. The study will discuss the dependencies of human...

  13. Power production and ADS

    SciTech Connect (OSTI)

    Raja, Rajendran; /Fermilab

    2010-03-01T23:59:59.000Z

    We describe the power production process in Accelerator Driven Sub-critical systems employing Thorium-232 and Uranium-238 as fuel and examine the demands on the power of the accelerator required.

  14. Power Factor Improvement

    E-Print Network [OSTI]

    Viljoen, T. A.

    1979-01-01T23:59:59.000Z

    Power factor control is a necessary ingredient in any successful Energy Management Program. Many companies are operating with power factors of 70% or less and are being penalized through the electrical utility bill. This paper starts by describing...

  15. PowerPoint Presentation

    Broader source: Energy.gov (indexed) [DOE]

    Research Center Blvd. Fayetteville, AR 72701 Phone: (479)-443-5759 Email: marcelo@apei.net Website: www.apei.net High Temperature and High Power Density SiC Power Electronic...

  16. Idaho Power- Net Metering

    Broader source: Energy.gov [DOE]

    Idaho does not have a statewide net-metering policy. However, each of the state's three investor-owned utilities -- Avista Utilities, Idaho Power and Rocky Mountain Power -- has developed a net...

  17. PowerPoint Presentation

    Broader source: Energy.gov (indexed) [DOE]

    Research Center Blvd. Fayetteville, AR 72701 Phone: (479)-443-5759 Email: mschupb@apei.net Website: www.apei.net High Power Density Silicon Carbide Power Electronic Converters...

  18. Space Solar Power Program

    SciTech Connect (OSTI)

    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

    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.

  19. Green Power Purchase Plan

    Broader source: Energy.gov [DOE]

    Class I renewable energy resources include solar, wind, new sustainable biomass, landfill gas, fuel cells (using renewable or non-renewable fuels), ocean thermal power, wave or tidal power, low...

  20. Soldier power. Battery charging.

    E-Print Network [OSTI]

    Hong, Deog Ki

    hours runtime at full load 50 W #12; (%) (kW) 300 1-5 Siemens-Power 30 (hr) 10,000 Siemens 300 Acumentrics 80 (mW/cm2) 600 400 Siemens-Power 85 (hr) 70,000 3,000 Siemens-Power 15 () 500 25 Siemens-Power 60 >2013 - , Bloom, MHI, Rolls Royce 6 #12; SOFCSOFC * (LSCF ) ( Ag

  1. Concentrating Solar Power

    SciTech Connect (OSTI)

    Not Available

    2008-09-01T23:59:59.000Z

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

  2. Power Prepayment Program

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah Project OfficePower Electronics Power Electronics PowerPower

  3. Mitigating Market Power in Deregulated Electricity Markets Seth Blumsack1

    E-Print Network [OSTI]

    Blumsack, Seth

    Mitigating Market Power in Deregulated Electricity Markets Seth Blumsack1 Department of Engineering thusfar from deregulation. Futher, each mitigation option has very different cost, effectiveness, and 1

  4. Power/Privilege Definitions

    E-Print Network [OSTI]

    Sheridan, Jennifer

    Major; People's Institute for Survival and Beyond, New Orleans 2. Power is the ability to define reality and to convince other people that it is their definition. ~ Dr. Wade Nobles 3. Power is the capacity to act. 4 different cultures. [JL] RACISM Racism is race prejudice plus power [See Racist]. People's Institute calls

  5. EXTERIOR POWERS KEITH CONRAD

    E-Print Network [OSTI]

    Lozano-Robledo, Alvaro

    form on a manifold is related to exterior powers of the dual space of the tangent space of a manifoldEXTERIOR POWERS KEITH CONRAD 1. Introduction Let R be a commutative ring. Unless indicated the alternating multilinear functions on Mk: the exterior power k(M). It is a certain quotient module of Mk

  6. Power Plant Cycling Costs

    SciTech Connect (OSTI)

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

    2012-07-01T23:59:59.000Z

    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.

  7. Power Dancers Audition Packet

    E-Print Network [OSTI]

    O'Toole, Alice J.

    Power Dancers Dance Team Audition Packet September 8-10, 2014 #12;Power Dancers Dance Team Dear service to their school with the support of the faculty, administration, and other groups on campus, but they also provide a source of great school spirit to UT Dallas. Power Dancers provides a real opportunity

  8. Power Dancers Audition Packet

    E-Print Network [OSTI]

    O'Toole, Alice J.

    Power Dancers Dance Team Audition Packet September 9-11, 2013 #12;Power Dancers Dance Team Dear service to their school with the support of the faculty, administration, and other groups on campus, but they also provide a source of great school spirit to UT Dallas. Power Dancers provides a real opportunity

  9. Power Dancers Audition Packet

    E-Print Network [OSTI]

    O'Toole, Alice J.

    Power Dancers Dance Team Audition Packet September 10 & 12, 2012 #12;Power Dancers Dance Team Dear service to their school with the support of the faculty, administration, and other groups on campus, but they also provide a source of great school spirit to UT Dallas. Power Dancers provides a real opportunity

  10. Green Power Inverter Prvningsrapport

    E-Print Network [OSTI]

    Green Power Inverter Prøvningsrapport SolenergiCentret Søren Poulsen Ivan Katic Oktober 2004 #12;Green Power Inverter målerapport.doc SolenergiCentret - 04-03-2005 2 Forord Nærværende rapport indeholder Teknologisk Instituts bidrag til målinger i forbindelse med PSO projektet "Green Power Inverter

  11. Sixth Northwest Conservation and Electric Power Plan Appendix M: Integrating Fish & Wildlife and

    E-Print Network [OSTI]

    Sixth Northwest Conservation and Electric Power Plan Appendix M: Integrating Fish & Wildlife.............................................................................................................. 1 Integrating the Fish and Wildlife Program and Power Planning Under the Northwest Power Act 2 Power Resource Planning that Accommodates the Power System Effects of the Fish and Wildlife Program

  12. Karnataka Power Corporation Limited and National Thermal Power...

    Open Energy Info (EERE)

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

  13. How Power is Lost: Illusions of Alliance Among the Powerful

    E-Print Network [OSTI]

    Brion, Sebastien

    2010-01-01T23:59:59.000Z

    while most accounts of power loss focus on ethical breachesPower Loss .1. Proposed Model of Power Loss Figure 2. Social Monitoring

  14. High Power Laser Innovation Sparks Geothermal Power Potential...

    Office of Environmental Management (EM)

    power source among renewables, is poised to emerge also as a flexible power source, balancing intermittent wind and solar power production and reducing variability in energy...

  15. Using government purchasing power to reduce equipment standby power

    E-Print Network [OSTI]

    Harris, Jeffrey; Meier, Alan; Bartholomew, Emily; Thomas, Alison; Glickman, Joan; Ware, Michelle

    2003-01-01T23:59:59.000Z

    or external power supply, other specifications, and purchasethe consumer to purchase extra power strips and extensionan internal standby power function, shall purchase Although

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

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Power Electronics (PE) Systems Presentations Energy Storage & Power Electronics 2008 Peer Review - Power Electronics (PE) Systems Presentations The 2008 Peer Review Meeting for the...

  17. Energy Department Announces Projects to Advance Cost-Effective...

    Office of Environmental Management (EM)

    Projects to Advance Cost-Effective Concentrating Solar Power Systems Energy Department Announces Projects to Advance Cost-Effective Concentrating Solar Power Systems May 21, 2014 -...

  18. Web-based Tool for Preliminary Assessment of Wind Power Plant Design

    E-Print Network [OSTI]

    Mustakerov, Ivan

    Web-based Tool for Preliminary Assessment of Wind Power Plant Design Daniela Borissova1 and Ivan. Designing of reliable and cost-effective industrial wind power plant is a prerequisite for the effective use of wind power as an alternative resource. The design of a wind power plant includes the determination

  19. ADEPT: Efficient Power Conversion

    SciTech Connect (OSTI)

    None

    2011-01-01T23:59:59.000Z

    ADEPT Project: In today’s increasingly electrified world, power conversion—the process of converting electricity between different currents, voltage levels, and frequencies—forms 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-E’s 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.

  20. Multimegawatt space power reactors

    SciTech Connect (OSTI)

    Dearien, J.A.; Whitbeck, J.F.

    1989-01-01T23:59:59.000Z

    In response to the need of the Strategic Defense Initiative (SDI) and long range space exploration and extra-terrestrial basing by the National Air and Space Administration (NASA), concepts for nuclear power systems in the multi-megawatt levels are being designed and evaluated. The requirements for these power systems are being driven primarily by the need to minimize weight and maximize safety and reliability. This paper will discuss the present requirements for space based advanced power systems, technological issues associated with the development of these advanced nuclear power systems, and some of the concepts proposed for generating large amounts of power in space. 31 figs.

  1. SHUSH: Reactive Transmit Power Control For Wireless MAC Protocols

    E-Print Network [OSTI]

    Han, Richard Y.

    SHUSH: Reactive Transmit Power Control For Wireless MAC Protocols Anmol Sheth and Richard Han@cs.colorado.edu Abstract-- Asymmetric transmission ranges caused due to transmit power control have the undesirable effect access. In this paper we present a new reactive power controlled MAC protocol, SHUSH, which tackles

  2. Efficient Power Control for Broadcast in Wireless Communication Systems

    E-Print Network [OSTI]

    Chronopoulos, Anthony T.

    Efficient Power Control for Broadcast in Wireless Communication Systems A. T. Chronopoulos Computer. Therefore, controlling the transmitter power at a given node increases not only the operating life and a destination. It is essential to find effective means of power control of point-to-point, broadcasting

  3. Fine-Grained Power Management Using Process-level Profiling

    E-Print Network [OSTI]

    Shi, Weisong

    . To evaluate energy efficiency, the Green Grid group proposed the definition of power usage effectiveness (PUE between performance and energy consumption, fine-grained methods, such as process- level power management-aware decisions based on these information. In addition, we introduce a power-aware system module called Energy

  4. Advanced PID type fuzzy logic power system stabilizer

    SciTech Connect (OSTI)

    Hiyama, Takashi; Kugimiya, Masahiko; Satoh, Hironori (Kumamoto Univ. (Japan). Dept. of Electrical Engineering and Computer Science)

    1994-09-01T23:59:59.000Z

    An advanced fuzzy logic control scheme has been proposed for a micro-computer based power system stabilizer to enhance the overall stability of power systems. The proposed control scheme utilizes the PID information of the generator speed. The input signal to the stabilizer is the real power output of a study unit. Simulations show the effectiveness of the advanced fuzzy logic control scheme.

  5. Complete System Power Estimation using Processor Performance Events

    E-Print Network [OSTI]

    John, Lizy Kurian

    Complete System Power Estimation using Processor Performance Events W. Lloyd Bircher and Lizy K measurement of complete system power consumption. The approach takes advantage of the "trickle-down" effect and existing on-chip performance event counters, it is possible to estimate system power consumption without

  6. System-wide emissions implications of increased wind power penetration.

    SciTech Connect (OSTI)

    Valentino, L.; Valenzuela, V.; Botterud, A.; Zhou, Z.; Conzelmann, G. (Decision and Information Sciences); (Univ. of Illinois, Champaign/Urbana); (Georgia Institute of Technology)

    2012-01-01T23:59:59.000Z

    This paper discusses the environmental effects of incorporating wind energy into the electric power system. We present a detailed emissions analysis based on comprehensive modeling of power system operations with unit commitment and economic dispatch for different wind penetration levels. First, by minimizing cost, the unit commitment model decides which thermal power plants will be utilized based on a wind power forecast, and then, the economic dispatch model dictates the level of production for each unit as a function of the realized wind power generation. Finally, knowing the power production from each power plant, the emissions are calculated. The emissions model incorporates the effects of both cycling and start-ups of thermal power plants in analyzing emissions from an electric power system with increasing levels of wind power. Our results for the power system in the state of Illinois show significant emissions effects from increased cycling and particularly start-ups of thermal power plants. However, we conclude that as the wind power penetration increases, pollutant emissions decrease overall due to the replacement of fossil fuels.

  7. EXPERIMENTAL TESTS OF DEREGULATED MARKETS FOR ELECTRIC POWER: MARKET POWER AND SELF COMMITMENT

    E-Print Network [OSTI]

    , such as the market for heating oil. In some circumstances, one generator may, in effect, be a perfect monopolistEXPERIMENTAL TESTS OF DEREGULATED MARKETS FOR ELECTRIC POWER: MARKET POWER AND SELF COMMITMENT 1 markets for electricity are very different from one another. For example, eastern markets have favored

  8. Multimode power processor

    DOE Patents [OSTI]

    O'Sullivan, George A. (Pottersville, NJ); O'Sullivan, Joseph A. (St. Louis, MO)

    1999-01-01T23:59:59.000Z

    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.

  9. Multimode power processor

    DOE Patents [OSTI]

    O'Sullivan, G.A.; O'Sullivan, J.A.

    1999-07-27T23:59:59.000Z

    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.

  10. A novel power block for CSP systems

    SciTech Connect (OSTI)

    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

    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)

  11. POWER SYSTEMS DEVELOPMENT FACILITY

    SciTech Connect (OSTI)

    Unknown

    2002-05-01T23:59:59.000Z

    This report discusses test campaign GCT3 of the Halliburton KBR transport reactor train with a Siemens Westinghouse Power Corporation (Siemens Westinghouse) particle filter system at the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama. The transport reactor is an advanced circulating fluidized-bed reactor designed to operate as either a combustor or a gasifier using one of two possible particulate control devices (PCDs). The transport reactor was operated as a pressurized gasifier during GCT3. GCT3 was planned as a 250-hour test run to commission the loop seal and continue the characterization of the limits of operational parameter variations using a blend of several Powder River Basin coals and Bucyrus limestone from Ohio. The primary test objectives were: (1) Loop Seal Commissioning--Evaluate the operational stability of the loop seal with sand and limestone as a bed material at different solids circulation rates and establish a maximum solids circulation rate through the loop seal with the inert bed. (2) Loop Seal Operations--Evaluate the loop seal operational stability during coal feed operations and establish maximum solids circulation rate. Secondary objectives included the continuation of reactor characterization, including: (1) Operational Stability--Characterize the reactor loop and PCD operations with short-term tests by varying coal feed, air/coal ratio, riser velocity, solids circulation rate, system pressure, and air distribution. (2) Reactor Operations--Study the devolatilization and tar cracking effects from transient conditions during transition from start-up burner to coal. Evaluate the effect of process operations on heat release, heat transfer, and accelerated fuel particle heat-up rates. Study the effect of changes in reactor conditions on transient temperature profiles, pressure balance, and product gas composition. (3) Effects of Reactor Conditions on Syngas Composition--Evaluate the effect of air distribution, steam/coal ratio, solids circulation rate, and reactor temperature on CO/CO{sub 2} ratio, H{sub 2}/converted carbon ratio, gasification rates, carbon conversion, and cold and hot gas efficiencies. Test run GCT3 was started on December 1, 2000, with the startup of the thermal oxidizer fan, and was completed on February 1, 2001. This test was conducted in two parts; the loop seal was commissioned during the first part of this test run from December 1 through 15, which consisted of hot inert solids circulation testing. These initial tests provided preliminary data necessary to understand different parameters associated with the operation and performance of the loop seal. The loop seal was tested with coal feed during the second part of the test run and additional data was gathered to analyze reactor operations and to identify necessary modifications to improve equipment and process performance. In the second part of GCT3, the gasification portion of the test, from January 20 to February 1, 2001, the mixing zone and riser temperatures were varied between 1,675 and 1,825 F at pressures ranging from 200 to 240 psig. There were 306 hours of solid circulation and 184 hours of coal feed attained in GCT3.

  12. Power Quality Aspects in a Wind Power Plant: Preprint

    SciTech Connect (OSTI)

    Muljadi, E.; Butterfield, C. P.; Chacon, J.; Romanowitz, H.

    2006-01-01T23:59:59.000Z

    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.

  13. EA-1726: Kahuku Wind Power, LLC Wind Power Generation Facility...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    6: Kahuku Wind Power, LLC Wind Power Generation Facility, O'ahu, HI EA-1726: Kahuku Wind Power, LLC Wind Power Generation Facility, O'ahu, HI May 3, 2010 EA-1726: Final...

  14. Dynamic Reactive Power Control of Isolated Power Systems

    E-Print Network [OSTI]

    Falahi, Milad

    2012-10-03T23:59:59.000Z

    This dissertation presents dynamic reactive power control of isolated power systems. Isolated systems include MicroGrids in islanded mode, shipboard power systems operating offshore, or any other power system operating in islanded mode intentionally...

  15. Nuclear power plant performance assessment pertaining to plant aging in France and the United States

    E-Print Network [OSTI]

    Guyer, Brittany (Brittany Leigh)

    2013-01-01T23:59:59.000Z

    The effect of aging on nuclear power plant performance has come under increased scrutiny in recent years. The approaches used to make an assessment of this effect strongly influence the economics of nuclear power plant ...

  16. 1998 Tutorial on Micro Mechatronics and Micro Robotics Powering 3 Dimensional Microrobots: Power Density Limitations \\Lambda

    E-Print Network [OSTI]

    Fearing, Ron

    is the effective power density of the actuator. As inertia and gravitional forces become less significant for small at the micro­scale. One scaling law that is helpful for micro­actuators is the increased break down field

  17. PASSIVE CONTROL OF FLUID POWERED HUMAN POWER AMPLIFIERS

    E-Print Network [OSTI]

    Li, Perry Y.

    PASSIVE CONTROL OF FLUID POWERED HUMAN POWER AMPLIFIERS Perry Y. Li and Venkat Durbha Center is proposed for the control of fluid powered human power amplifiers. Human power amplifiers are mechanical as a torque/force source. The control objective is to amplify the power that the human exerts on the machine

  18. Alternative Energy Technologies Solar Power

    E-Print Network [OSTI]

    Scott, Christopher

    #12;Alternative Energy Technologies Solar Power Photovoltaics Concentrating Solar Power (CSP) Power;Concentrating Solar Power (CSP) Reflector material is Aluminum or Silver Tube material ..... Several possible ............... Mexico, Canada, Peru Alumina ............Guinea, Brazil, Australia, Jamaica Manganese ....... S. Africa

  19. Entangling Power of Permutations

    E-Print Network [OSTI]

    Lieven Clarisse; Sibasish Ghosh; Simone Severini; Anthony Sudbery

    2005-04-11T23:59:59.000Z

    The notion of entangling power of unitary matrices was introduced by Zanardi, Zalka and Faoro [PRA, 62, 030301]. We study the entangling power of permutations, given in terms of a combinatorial formula. We show that the permutation matrices with zero entangling power are, up to local unitaries, the identity and the swap. We construct the permutations with the minimum nonzero entangling power for every dimension. With the use of orthogonal latin squares, we construct the permutations with the maximum entangling power for every dimension. Moreover, we show that the value obtained is maximum over all unitaries of the same dimension, with possible exception for 36. Our result enables us to construct generic examples of 4-qudits maximally entangled states for all dimensions except for 2 and 6. We numerically classify, according to their entangling power, the permutation matrices of dimension 4 and 9, and we give some estimates for higher dimensions.

  20. Interleaved power converter

    DOE Patents [OSTI]

    Zhu, Lizhi (Canton, MI)

    2007-11-13T23:59:59.000Z

    A power converter architecture interleaves full bridge converters to alleviate thermal management problems in high current applications, and may, for example, double the output power capability while reducing parts count and costs. For example, one phase of a three phase inverter is shared between two transformers, which provide power to a rectifier such as a current doubler rectifier to provide two full bridge DC/DC converters with three rather than four high voltage inverter legs.

  1. Electric power annual 1993

    SciTech Connect (OSTI)

    Not Available

    1994-12-08T23:59:59.000Z

    This report presents a summary of electric power industry statistics at national, regional, and state levels: generating capability and additions, net generation, fossil-fuel statistics, retail sales and revenue, finanical statistics, environmental statistics, power transactions, demand side management, nonutility power producers. Purpose is to provide industry decisionmakers, government policymakers, analysts, and the public with historical data that may be used in understanding US electricity markets.

  2. Power System load management

    SciTech Connect (OSTI)

    Rudenko, Yu.N.; Semenov, V.A.; Sovalov, S.A.; Syutkin, B.D.

    1984-01-01T23:59:59.000Z

    The variation in demand nonuniformity is analyzed for the Unified Electric Power System of the USSR and certain interconnected power systems; the conditions for handling such nonuniformity with utilization of generating equipment having differing flexibility capabilities are also considered. On this basis approaches and techniques for acting on user loads, load management, in order to assure a balance between generated and consumed power are considered.

  3. Western Area Power Administration

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    29-30, 2011 2 Agenda * Overview of Western Area Power Administration * Post-1989 Loveland Area Projects (LAP) Marketing Plan * Energy Planning and Management Program * Development...

  4. PowerPoint Presentation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and Characterization (SciChar) Workshop Characterization Capabilities Battery Questions Neutron Advantages * Scattering Power unrelated to Z - Many low Z elements have high cross...

  5. 2025 Power Marketing Initiative

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    the LAP FES contracts and has developed a plan for marketing and allocating LAP hydroelectric power after the current FES contracts expire. We call this plan our 2025...

  6. Power Supply Negotiations

    Office of Environmental Management (EM)

    Southeastern Federal Power Alliance Incremental Decay in Energy March 11, 2014 2 Incremental Decay in Energy Hydropower customers observations from our review of the Buford...

  7. Power Purchase Agreements Update

    Broader source: Energy.gov [DOE]

    Presentation covers an update on power purchase agreements and is given at the Spring 2011 Federal Utility Partnership Working Group (FUPWG) meeting.

  8. Green Power Offer (Maine)

    Broader source: Energy.gov [DOE]

    This chapter establishes requirements, standards and procedures and a competitive bidding process to implement the green power offer program. The program is designed to make renewable energy...

  9. Municipal Electric Power (Minnesota)

    Broader source: Energy.gov [DOE]

    This section describes energy procurement for local utilities operating in Minnesota and provides a means for Minnesota cities to construct and operate hydroelectric power plants. The statute gives...

  10. Alabama Power- UESC Activities

    Broader source: Energy.gov [DOE]

    Presentation—given at the Fall 2012 Federal Utility Partnership Working Group (FUPWG) meeting—discusses Alabama Power and its utility energy service contract (UESC) projects and activities.

  11. Concentrated Solar Thermoelectric Power

    Broader source: Energy.gov [DOE]

    This presentation was delivered at the SunShot Concentrating Solar Power (CSP) Program Review 2013, held April 23–25, 2013 near Phoenix, Arizona.

  12. Enabling Wind Power Nationwide

    Office of Environmental Management (EM)

    including natural gas, and competing renewable power resources such as solar photovoltaics. Figure 4-3. Wind turbine hub height trends in Germany from 2007 to 2014 Source:...

  13. Critical pulse power components

    SciTech Connect (OSTI)

    Sarjeant, W.J.; Rohwein, G.J.

    1981-01-01T23:59:59.000Z

    Critical components for pulsed power conditioning systems will be reviewed. Particular emphasis will be placed on those components requiring significant development efforts. Capacitors, for example, are one of the weakest elements in high-power pulsed systems, especially when operation at high-repetition frequencies for extended periods of time are necessary. Switches are by far the weakest active components of pulse power systems. In particular, opening switches are essentially nonexistent for most applications. Insulaton in all systems and components requires development and improvement. Efforts under way in technology base development of pulse power components will be discussed.

  14. PowerPoint Presentation

    Office of Environmental Management (EM)

    Systems Program 1 DOE Energy Storage & Power Electronics Research Programs October 8, 2009 Marcelo Schupbach, Ph.D. Chief Technology Officer APEI, Inc. 535 Research Center Blvd....

  15. Energy 101: Hydroelectric Power

    Office of Energy Efficiency and Renewable Energy (EERE)

    Learn how hydroelectric power, or hydropower, captures the kinetic energy of flowing water and turns it into electricity for our homes and businesses.

  16. Southwestern Power Administration

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    POTC Home Courses Instructors NERC Continuing Education Power Operations Training Center Instructors All instructors at Southwestern's POTC are NERC-approved continuing education...

  17. Combined Heat & Power

    Broader source: Energy.gov (indexed) [DOE]

    & Power (CHP) Michael Ellis Director AGL Energy Services Federal Utility Partnership Working Group May 7 - 8, 2014 Virginia Beach, VA "CHP is the most efficient way of generating...

  18. European Space Power Conference

    SciTech Connect (OSTI)

    Bents, D.J.; Kohout, L.L.; Mckissock, B.I.; Rodriguez, C.D.; Withrow, C.A.; Colozza, A.; Hanlon, J.C.; Schmitz, P.C.

    1991-01-01T23:59:59.000Z

    To support the Space Exploration Initiative (SEI), a study was performed to investigate power system alternatives for the rover vehicles and servicers that were subsequently generated for each of these rovers and servicers, candidate power sources incorporating various power generation and energy storage technologies were identified. The technologies were those believed most appropriate to the SEI missions, and included solar, electrochemical, and isotope systems. The candidates were characterized with respect to system mass, deployed area, and volume. For each of the missions a preliminary selection was made. Results of this study depict the available power sources in light of mission requirements as they are currently defined.

  19. Green Power Purchasing

    Broader source: Energy.gov [DOE]

    Eligible resources include tidal and wave power, fuel cells using renewable fuels, hydropower facilities less than 60 megawatts (MW), solar thermal-electric systems, photovoltaics (PV), wind,...

  20. Application Power Signature Analysis

    SciTech Connect (OSTI)

    Hsu, Chung-Hsing [ORNL] [ORNL; Combs, Jacob [Sonoma State University] [Sonoma State University; Nazor, Jolie [Sonoma State University] [Sonoma State University; Santiago, Fabian [Sonoma State University] [Sonoma State University; Thysell, Rachelle [Sonoma State University] [Sonoma State University; Rivoire, Suzanne [Sonoma State University] [Sonoma State University; Poole, Stephen W [ORNL] [ORNL

    2014-01-01T23:59:59.000Z

    The high-performance computing (HPC) community has been greatly concerned about energy efficiency. To address this concern, it is essential to understand and characterize the electrical loads of HPC applications. In this work, we study whether HPC applications can be distinguished by their power-consumption patterns using quantitative measures in an automatic manner. Using a collection of 88 power traces from 4 different systems, we find that basic statistical measures do a surprisingly good job of summarizing applications' distinctive power behavior. Moreover, this study opens up a new area of research in power-aware HPC that has a multitude of potential applications.

  1. PowerPoint Presentation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    CONTRIBUTORS Developed by Rob Carmichael, Cadeo Group, Mark Bielecki and Amy Meyer, Navigant Consulting and Kristin Salvador, Artisan. Developed for the Bonneville Power...

  2. PowerPoint Presentation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    in SAM Photovoltaics Concentrating PV Solar Water Heating Geothermal Dish-Stirling Linear Fresnel Power Tower Parabolic Trough Small Wind Utility-scale Wind Biomass...

  3. Concentrated Thermoelectric Power

    Broader source: Energy.gov (indexed) [DOE]

    electricity. Representing about 15% of the total system cost, power blocks include the steam turbine, generator, and associated equipment such as condensers and water treatment...

  4. THERMOELECTRIC POWER IN SEMICONDUCTING ALLOYS OF THE InPxAs1-x SYSTEM

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    883 THERMOELECTRIC POWER IN SEMICONDUCTING ALLOYS OF THE InPxAs1-x SYSTEM N. P. KEKELIDZE, Z. V'approche de InP. Abstract. 2014 A detailed analysis of the thermoelectric power and the Hall effect near room of measurements of the thermoelectric power and the Hall effect. The values of the electron effective masses were

  5. Control and Optimization Meet the Smart Power Grid - Scheduling of Power Demands for Optimal Energy Management

    E-Print Network [OSTI]

    Koutsopoulos, Iordanis

    2010-01-01T23:59:59.000Z

    The smart power grid aims at harnessing information and communication technologies to enhance reliability and enforce sensible use of energy. Its realization is geared by the fundamental goal of effective management of demand load. In this work, we envision a scenario with real-time communication between the operator and consumers. The grid operator controller receives requests for power demands from consumers, with different power requirement, duration, and a deadline by which it is to be completed. The objective is to devise a power demand task scheduling policy that minimizes the grid operational cost over a time horizon. The operational cost is a convex function of instantaneous power consumption and reflects the fact that each additional unit of power needed to serve demands is more expensive as demand load increases.First, we study the off-line demand scheduling problem, where parameters are fixed and known. Next, we devise a stochastic model for the case when demands are generated continually and sched...

  6. Energy Storage for Power Systems Applications: A Regional Assessment for the Northwest Power Pool (NWPP)

    SciTech Connect (OSTI)

    Kintner-Meyer, Michael CW; Balducci, Patrick J.; Jin, Chunlian; Nguyen, Tony B.; Elizondo, Marcelo A.; Viswanathan, Vilayanur V.; Guo, Xinxin; Tuffner, Francis K.

    2010-04-01T23:59:59.000Z

    Wind production, which has expanded rapidly in recent years, could be an important element in the future efficient management of the electric power system; however, wind energy generation is uncontrollable and intermittent in nature. Thus, while wind power represents a significant opportunity to the Bonneville Power Administration (BPA), integrating high levels of wind resources into the power system will bring great challenges to generation scheduling and in the provision of ancillary services. This report addresses several key questions in the broader discussion on the integration of renewable energy resources in the Pacific Northwest power grid. More specifically, it addresses the following questions: a) how much total reserve or balancing requirements are necessary to accommodate the simulated expansion of intermittent renewable energy resources during the 2019 time horizon, and b) what are the most cost effective technological solutions for meeting load balancing requirements in the Northwest Power Pool (NWPP).

  7. The Carotene Consuming Power of Certain Feeds.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1943-01-01T23:59:59.000Z

    carotene consuming power. The dif- ferences were not great, however, but on the other hand were compara- tirely small. Very little carotene was aestroyed in the rats by the meat scraps with high carotene consuming power. Table 20. Effect of carotene... worked out and are given in detail. Samples of meat and bone scraps, meat scraps, tankage, dried fish, dried skim milk and dried butter milk may have it high consuming power for carotene. Vegetable feeds such as corn meal, cottonseed med, aheat pay...

  8. EIS-0093: Bonneville Power Administration's 1982 Rate Proposal

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy's Bonneville Power Administration prepared this statement to evaluate the potential environmental impacts associated with an increase in wholesale power rates for calendar year 1982, including the effects of rate hikes in that year, the cumulative effects of rate hikes from 1979-1985, as well as alternative revenue scenarios.

  9. Environmental Effects on Power Electronic Devices

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of material constituents within PEDs. * Model and interpret PED thermomechanical stress states. * Optimize PED designs (i.e., seek to minimize stresses). * Recommend...

  10. Environmental Effects on Power Electronic Devices

    Broader source: Energy.gov (indexed) [DOE]

    October 2007 * Project end: September 2010 * Percent complete: 92% * Total project funding DOE 100% * FY08: 200k * FY09: 200k * FY10: 200k (135k recvd as of 01Apr10)...

  11. Power Counting to Better Jet Observables

    E-Print Network [OSTI]

    Andrew J. Larkoski; Ian Moult; Duff Neill

    2014-09-22T23:59:59.000Z

    Optimized jet substructure observables for identifying boosted topologies will play an essential role in maximizing the physics reach of the Large Hadron Collider. Ideally, the design of discriminating variables would be informed by analytic calculations in perturbative QCD. Unfortunately, explicit calculations are often not feasible due to the complexity of the observables used for discrimination, and so many validation studies rely heavily, and solely, on Monte Carlo. In this paper we show how methods based on the parametric power counting of the dynamics of QCD, familiar from effective theory analyses, can be used to design, understand, and make robust predictions for the behavior of jet substructure variables. As a concrete example, we apply power counting for discriminating boosted Z bosons from massive QCD jets using observables formed from the n-point energy correlation functions. We show that power counting alone gives a definite prediction for the observable that optimally separates the background-rich from the signal-rich regions of phase space. Power counting can also be used to understand effects of phase space cuts and the effect of contamination from pile-up, which we discuss. As these arguments rely only on the parametric scaling of QCD, the predictions from power counting must be reproduced by any Monte Carlo, which we verify using Pythia8 and Herwig++. We also use the example of quark versus gluon discrimination to demonstrate the limits of the power counting technique.

  12. Power, Media & Montesquieu. New forms of public power and the balance of power

    E-Print Network [OSTI]

    van den Brink, Jeroen

    SUMMARY Power, Media & Montesquieu. New forms of public power and the balance of power are organized it is crucial to restrain the power that the state exerts on its citizens. The state has three functions, commonly known as powers: the legislative, executive and judicial powers. This three

  13. NUCLEAR POWER in CALIFORNIA

    E-Print Network [OSTI]

    NUCLEAR POWER in CALIFORNIA: 2007 STATUS REPORT CALIFORNIA ENERGY COMMISSION October 2007 CEC-100, California Contract No. 700-05-002 Prepared For: California Energy Commission Barbara Byron, Senior Nuclear public workshops on nuclear power. The Integrated Energy Policy Report Committee, led by Commissioners

  14. Purchasing Renewable Power

    Broader source: Energy.gov [DOE]

    Federal agencies can purchase renewable power or renewable energy certificates (RECs) from a utility or other organization to meet Federal renewable energy requirements. Renewable power and RECs are good choices for facilities where on-site projects may be difficult or capital budgets are limited.

  15. Fusion Power Deployment

    SciTech Connect (OSTI)

    J.A. Schmidt; J.M. Ogden

    2002-02-06T23:59:59.000Z

    Fusion power plants could be part of a future portfolio of non-carbon dioxide producing energy supplies such as wind, solar, biomass, advanced fission power, and fossil energy with carbon dioxide sequestration. In this paper, we discuss key issues that could impact fusion energy deployment during the last half of this century. These include geographic issues such as resource availability, scale issues, energy storage requirements, and waste issues. The resource needs and waste production associated with fusion deployment in the U.S. should not pose serious problems. One important feature of fusion power is the fact that a fusion power plant should be locatable within most local or regional electrical distribution systems. For this reason, fusion power plants should not increase the burden of long distance power transmission to our distribution system. In contrast to fusion power, regional factors could play an important role in the deployment of renewable resources such as wind, solar and biomass or fossil energy with CO2 sequestration. We examine the role of these regional factors and their implications for fusion power deployment.

  16. Electrically powered hand tool

    DOE Patents [OSTI]

    Myers, Kurt S.; Reed, Teddy R.

    2007-01-16T23:59:59.000Z

    An electrically powered hand tool is described and which includes a three phase electrical motor having a plurality of poles; an electrical motor drive electrically coupled with the three phase electrical motor; and a source of electrical power which is converted to greater than about 208 volts three-phase and which is electrically coupled with the electrical motor drive.

  17. The Icelandic Power Situation

    E-Print Network [OSTI]

    Karlsson, Brynjar

    energy attracts power intensive industry to Iceland Households use only 5% 90% of district heating ensured · Feasible to sell excess energy · Takes advantage of the flexiblity of hydropower · Energy with low cost geothermal energy 80% 5% 15% Households Other users Power intensive industries #12;Future

  18. Power module assembly

    DOE Patents [OSTI]

    Campbell, Jeremy B. (Torrance, CA); Newson, Steve (Redondo Beach, CA)

    2011-11-15T23:59:59.000Z

    A power module assembly of the type suitable for deployment in a vehicular power inverter, wherein the power inverter has a grounded chassis, is provided. The power module assembly comprises a conductive base layer electrically coupled to the chassis, an insulating layer disposed on the conductive base layer, a first conductive node disposed on the insulating layer, a second conductive node disposed on the insulating layer, wherein the first and second conductive nodes are electrically isolated from each other. The power module assembly also comprises a first capacitor having a first electrode electrically connected to the conductive base layer, and a second electrode electrically connected to the first conductive node, and further comprises a second capacitor having a first electrode electrically connected to the conductive base layer, and a second electrode electrically connected to the second conductive node.

  19. Power Systems and Communications Infrastructures for the future, Beijing, September 2002 AN INITIAL COMPLEX SYSTEMS ANALYSIS OF THE RISKS OF

    E-Print Network [OSTI]

    USA Introduction Electric power transmission systems are a key infrastructure and blackouts, electric power blackouts have cascading effects on other vital infrastructures. While it is usefulPower Systems and Communications Infrastructures for the future, Beijing, September 2002 AN INITIAL

  20. Northwest Power and Conservation Council Fifth Northwest Power Plan

    E-Print Network [OSTI]

    Northwest Power and Conservation Council Fifth Northwest Power Plan Statement of Basis and Purpose for the Fifth Power Plan and Response to Comments on the Draft Fifth Power Plan February 2005 #12;I. Background.........................................................................................................................................3 B. Developing the Fifth Power Plan

  1. The Power of Non-Uniform Wireless Power

    E-Print Network [OSTI]

    The Power of Non-Uniform Wireless Power ETH Zurich ­ Distributed Computing Group Magnus M-To-Interference-Plus-Noise Ratio (SINR) Formula Minimum signal- to-interference ratio Power level of sender u Path-loss exponent Noise Distance between two nodes Received signal power from sender Received signal power from all other

  2. Trees and Power Lines: Minimizing Conflicts between Electric Power

    E-Print Network [OSTI]

    Kammen, Daniel M.

    Trees and Power Lines: Minimizing Conflicts between Electric Power Infrastructure and the Urban: Minimizing Conflicts between Electric Power Infrastructure and the Urban Forest ISSUE BRIEF | March 2012 1: Minimizing Conflicts between Electric Power Infrastructure and the Urban Forest 1 Trees and overhead power

  3. Distributed Power Delivery for Energy Efficient and Low Power Systems

    E-Print Network [OSTI]

    Friedman, Eby G.

    Distributed Power Delivery for Energy Efficient and Low Power Systems Selc¸uk K¨ose Department throughout a power distribution system. Due to the parasitic impedances of the power distribution networks current to the load circuits [3]. The complexity of the high performance power delivery systems has

  4. Electric power annual 1992

    SciTech Connect (OSTI)

    Not Available

    1994-01-06T23:59:59.000Z

    The Electric Power Annual presents a summary of electric utility statistics at national, regional and State levels. The objective of the publication is to provide industry decisionmakers, government policymakers, analysts and the general public with historical data that may be used in understanding US electricity markets. The Electric Power Annual is prepared by the Survey Management Division; Office of Coal, Nuclear, Electric and Alternate Fuels; Energy Information Administration (EIA); US Department of Energy. ``The US Electric Power Industry at a Glance`` section presents a profile of the electric power industry ownership and performance, and a review of key statistics for the year. Subsequent sections present data on generating capability, including proposed capability additions; net generation; fossil-fuel statistics; retail sales; revenue; financial statistics; environmental statistics; electric power transactions; demand-side management; and nonutility power producers. In addition, the appendices provide supplemental data on major disturbances and unusual occurrences in US electricity power systems. Each section contains related text and tables and refers the reader to the appropriate publication that contains more detailed data on the subject matter. Monetary values in this publication are expressed in nominal terms.

  5. Computational power of correlations

    E-Print Network [OSTI]

    Janet Anders; Dan E. Browne

    2009-02-05T23:59:59.000Z

    We study the intrinsic computational power of correlations exploited in measurement-based quantum computation. By defining a general framework the meaning of the computational power of correlations is made precise. This leads to a notion of resource states for measurement-based \\textit{classical} computation. Surprisingly, the Greenberger-Horne-Zeilinger and Clauser-Horne-Shimony-Holt problems emerge as optimal examples. Our work exposes an intriguing relationship between the violation of local realistic models and the computational power of entangled resource states.

  6. Foucault's Ethics of Power

    E-Print Network [OSTI]

    Wolf, Kirk

    ­ cally remarks , there is no 'headquarters that presides over the rationality" of power (HSl 125). Rather, strategies of power are nonsubjective insofar as they arc anonymous and operate indepen­ dent ly of the part icular people who wil l ingly or unwi...Foucault's Ethics of Power Kirk Wolf Delia College 1. I n t r o d u c t i o n Since Foucaull 's death in 19K4, his interpreters have generally located his importance in his genealogical critiques and in his phi­ losophy ofpower. On the one hand...

  7. Nuclear power attitude trends

    SciTech Connect (OSTI)

    Nealey, S.M.

    1981-11-01T23:59:59.000Z

    The increasing vulnerability of nuclear power to political pressures fueled by public concerns, particularly about nuclear plant safety and radioactive waste disposal, has become obvious. Since Eisenhower's Atoms-for-Peace program, utility and government plans have centered on expansion of nuclear power generating capability. While supporters have outnumbered opponents of nuclear power expansion for many years, in the wake of the Three Mile Island (TMI) accident the margin of support has narrowed. The purpose of this paper is to report and put in perspective these long-term attitude trends.

  8. PowerPoint Presentation

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin of Contamination in235-1Department of60Power Purchase Agreements PowerPowerCentsDC

  9. Power control system and method

    DOE Patents [OSTI]

    Steigerwald, Robert Louis; Anderson, Todd Alan

    2006-11-07T23:59:59.000Z

    A power system includes an energy harvesting device, a battery coupled to the energy harvesting device, and a circuit coupled to the energy harvesting device and the battery. The circuit is adapted to deliver power to a load by providing power generated by the energy harvesting device to the load without delivering excess power to the battery and to supplement the power generated by the energy harvesting device with power from the battery if the power generated by the energy harvesting device is insufficient to fully power the load. A method of operating the power system is also provided.

  10. Power control system and method

    DOE Patents [OSTI]

    Steigerwald, Robert Louis (Burnt Hills, NY) [Burnt Hills, NY; Anderson, Todd Alan (Niskayuna, NY) [Niskayuna, NY

    2008-02-19T23:59:59.000Z

    A power system includes an energy harvesting device, a battery coupled to the energy harvesting device, and a circuit coupled to the energy harvesting device and the battery. The circuit is adapted to deliver power to a load by providing power generated by the energy harvesting device to the load without delivering excess power to the battery and to supplement the power generated by the energy harvesting device with power from the battery if the power generated by the energy harvesting device is insufficient to fully power the load. A method of operating the power system is also provided.

  11. POWER CENTRALIZED SEMIGROUPS PRIMOZ MORAVEC

    E-Print Network [OSTI]

    POWER CENTRALIZED SEMIGROUPS PRIMOZ MORAVEC Abstract. A semigroup is said to be power centralized if for every pair of elements x and y there exists a power of x commuting with y. The structure of power centralized groups and semigroups is investigated. In particular, we characterize 0-simple power centralized

  12. Efficient Power System State Estimation

    E-Print Network [OSTI]

    Lavaei, Javad

    monitoring of power systems. 2. Background Power systems have four main components: transmission, sub-transmissionEfficient Power System State Estimation Zafirah Baksh Expected BS, Department of Electrical Engineering May 2013 ELEN E4511 Power Systems Analysis Professor Javad Lavaeiyanesi #12;1. Introduction Power

  13. Power Sales to Electric Utilities

    SciTech Connect (OSTI)

    None

    1989-02-01T23:59:59.000Z

    The Public Utilities Regulatory Policies Act (PURPA) of 1979 requires that electrical utilities interconnect with qualifying facilities and purchase electricity at a rate based upon their full avoided costs (i.e., costs of providing both capacity and energy). Qualifying facilities (QF) include solar or geothermal electric units, hydropower, municipal solid waste or biomass-fired power plants, and cogeneration projects that satisfy maximum size, fuel use, ownership, location, and/or efficiency criteria. In Washington State, neither standard power purchase prices based upon a proxy ''avoided plant'', standard contracts, or a standard offer process have been used. Instead, a variety of power purchase contracts have been negotiated by developers of qualifying facilities with investor-owned utilities, public utility districts, and municipally-owned and operated utilities. With a hydro-based system, benefits associated with resource acquisition are determined in large part by how compatible the resource is with a utility's existing generation mix. Power purchase rates are negotiated and vary according to firm energy production, guarantees, ability to schedule maintenance or downtime, rights of refusal, power plant purchase options, project start date and length of contract; front-loading or levelization provisions; and the ability of the project to provide ''demonstrated'' capacity. Legislation was also enacted which allows PURPA to work effectively. Initial laws established ownership rights and provided irrigation districts, PUDs, and municipalities with expanded enabling powers. Financial processes were streamlined and, in some cases, simplified. Finally, laws were passed which are designed to ensure that development proceeds in an environmentally acceptable manner. In retrospect, PURPA has worked well within Washington. In the state of Washington, 20 small-scale hydroelectric projects with a combined generating capacity of 77 MW, 3 solid waste-to-energy facilities with 55 MW of electrical output, 4 cogeneration projects with 34.5 MW of generating capability, and 4 wastewater treatment facility digester gas-to-energy projects with 5 MW of electrical production have come on-line (or are in the final stages of construction) since the passage of PURPA. These numbers represent only a small portion of Washington's untapped and underutilized cogeneration and renewable resource generating potentials. [DJE-2005

  14. High Power, Linear CMOS Power Amplifier for WLAN Applications /

    E-Print Network [OSTI]

    Afsahi, Ali

    2013-01-01T23:59:59.000Z

    Tracking OFDM Power Amplier,” IEEE Journal of Solid-StateGSM/GPRS CMOS Power Ampli?er,” IEEE Journal of Solid-StateEnded Switching Power Ampli?es,” IEEE Journal of Solid-State

  15. Optimal Power Allocation for Renewable Energy Source

    E-Print Network [OSTI]

    Sinha, Abhinav

    2011-01-01T23:59:59.000Z

    Battery powered transmitters face energy constraint, replenishing their energy by a renewable energy source (like solar or wind power) can lead to longer lifetime. We consider here the problem of finding the optimal power allocation under random channel conditions for a wireless transmitter, such that rate of information transfer is maximized. Here a rechargeable battery, which is periodically charged by renewable source, is used to power the transmitter. All of above is formulated as a Markov Decision Process. Structural properties like the monotonicity of the optimal value and policy derived in this paper will be of vital importance in understanding the kind of algorithms and approximations needed in real-life scenarios. The effect of curse of dimensionality which is prevalent in Dynamic programming problems can thus be reduced. We show our results under the most general of assumptions.

  16. Microgrids and Heterogeneous Power Quality and Reliability

    SciTech Connect (OSTI)

    LaCommare, Kristina; Marnay, Chris

    2007-10-01T23:59:59.000Z

    This paper describes two stylized alternative visions of how the power system might evolve to meet future requirements for the high quality electricity service that modern digital economies demand, a supergrids paradigm and a dispersed paradigm. Some of the economics of the dispersed vision are explored, and perspectives are presented on both the choice of homogeneous universal power quality upstream in the electricity supply chain and on the extremely heterogeneous requirements of end-use loads. It is argued that meeting the demanding requirements of sensitive loads by local provision of high quality power may be more cost effective than increasing the quality of universal homogeneous supply upstream in the legacy grid. Finally, the potential role of microgrids in delivering heterogeneous power quality is demonstrated by reference to two ongoing microgrid tests in the U.S. and Japan.

  17. Controlling Peak Power During Scan Testing Ranganathan Sankaralingam and Nur A. Touba

    E-Print Network [OSTI]

    Touba, Nur A.

    Controlling Peak Power During Scan Testing Ranganathan Sankaralingam and Nur A. Touba Computer effective in controlling peak power. 1. Introduction The peak power drawn in a single clock cycle during. The average power dissipation during scan testing can be controlled by reducing the scan clock frequency

  18. POWER SYSTEM DESIGN ISSUES FOR SMART Douglas K. Lindner and Sriram Chandrasekaran

    E-Print Network [OSTI]

    Lindner, Douglas K.

    POWER SYSTEM DESIGN ISSUES FOR SMART MATERIALS Douglas K. Lindner and Sriram Chandrasekaran of bidirectional power flow on the power distribution system of an aircraft is addressed in this paper. The active-actuator" into the power distribution system of the aircraft is studied in detail. The effect of circulating energy between

  19. Project Sponsors:ADVANCED POWER & ENERGY www.apep.uci.edu

    E-Print Network [OSTI]

    Mease, Kenneth D.

    -load power is unable to adjust to renewable variability, introducing curtailment of wind and solar power due-induced exponential capacity effects for a 50/50 mix of wind and solar power HiGRID Tool Development of the Holistic on Grid CO2 Emissions This highlights the importance of increasing the flexibility of balancing power

  20. Variation-Aware Application Scheduling and Power Management for Chip Multiprocessors

    E-Print Network [OSTI]

    Torrellas, Josep

    Variation-Aware Application Scheduling and Power Management for Chip Multiprocessors Radu variation effects when scheduling applications or when managing power with Dynamic Voltage and Frequency scheduling and power management. One such power manage- ment algorithm, called LinOpt, uses linear

  1. Abstract Protection system hidden failures have been recognized as a contributing factor to power system cascading

    E-Print Network [OSTI]

    to power system cascading outages. However, in the current bulk power system reliability assessment to evaluate the effects of protection system hidden failures on bulk power system reliability in the general bulk power system reliability assessment procedure. In the proposed methodology, a breaker

  2. Maximum-Power-Point Tracking Method of Photovoltaic Using Only Single Current Sensor

    E-Print Network [OSTI]

    Fujimoto, Hiroshi

    » «Solar cell systems» Abstract This paper describes a novel strategy of maximum-power-point tracking point using only a single current sensor, i.e., a Hall-effect CT. Output power of the photovoltaic can-climbing method is employed to seek the maximum power point, using the output power obtained from only the current

  3. 486 IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, VOL. 17, NO. 7, JULY 2007 Estimation of Roughness-Induced Power Absorption

    E-Print Network [OSTI]

    Tsang, Leung

    it to predict the roughness effect on power loss. Index Terms--Power absorption, power spectral density (PSD significant additional power loss that can be detrimental for insertion loss limited designs. We recently interconnect surfaces and use it to estimate corresponding roughness-induced power loss. The 2-D PSD

  4. Transportation and Stationary Power

    E-Print Network [OSTI]

    ) is small. Previous feedback from industry has indicated that existing transportation fuel providers (oil for multiple fuel cell applications, including material handling equipment, backup power, and light- or heavy

  5. PowerPoint Presentation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    University of Tennessee October 22, 2010 Outline * The -ray instruments at ATLAS * The people * The physics * The future 2 Huge progress in 25 years in resolving power of -ray...

  6. DSW Power Projects

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    at Hoover Powerplant produce about 2,074 MW--enough electricity for nearly 8 million people. Western markets this power to public utilities in Arizona, California and Nevada...

  7. Power System Operator

    Broader source: Energy.gov [DOE]

    At Southeastern, you can make a direct impact by helping us deliver low-cost hydroelectric power to over one hundred electric cooperatives and municipal utilities, and over eight million end-use...

  8. CRSP Power Projects

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    expenses of the project each year, and receive all of the energy it produces. Salt Lake City AreaIntegrated Projects: Power from the Colorado River Storage Project plants was...

  9. PowerPoint Presentation

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    cable & conductor into 2,000 ft coiled tubing World first high power laser hardware (optics package & fiber connector) tested to >5,000 psi Achieving target requires "world...

  10. ELECTROCHEMICAL POWER FOR TRANSPORTATION

    E-Print Network [OSTI]

    Cairns, Elton J.

    2012-01-01T23:59:59.000Z

    Symposium on Power Systems for Electric Vehicles, Columbiaelectric vehicle must be considered as a total system which includes the primary energy source, electric powerpower for urban driving (32 W/kg), (130, Flow schematic for an electric vehicle battery system.

  11. in Idaho's Power County

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Located in Power County on the Fort Hall Reservation, the land is bisected by Bannock Creek, a perennial stream which flows from the east side of the Deep Creek Mountains and...

  12. Renewable Power Procurement Policy

    Broader source: Energy.gov [DOE]

    New York Governor George Pataki signed Executive Order No. 111 to promote "Green and Clean" State Buildings and Vehicles on June 10, 2001. The renewable-power procurement component of this order...

  13. Wind Power Today

    SciTech Connect (OSTI)

    Not Available

    2006-05-01T23:59:59.000Z

    Wind Power Today is an annual publication that provides an overview of the wind energy research conducted by the U.S. Department of Energy Wind and Hydropower Technologies Program.

  14. Wind Power Today

    SciTech Connect (OSTI)

    Not Available

    2007-05-01T23:59:59.000Z

    Wind Power Today is an annual publication that provides an overview of the wind energy research conducted by the U.S. Department of Energy Wind and Hydropower Technologies Program.

  15. Pig Poop Power

    E-Print Network [OSTI]

    Hacker, Randi; Tsutsui, William

    2007-04-11T23:59:59.000Z

    Broadcast Transcript: What could be more fitting in the Year of the Pig than to turn to the pig for power? And that's what is happening here in South Korea. In an effort to develop environmentally friendly, renewable energy ...

  16. Bonneville Power Administration

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Management BC Hydro and Power Authority 691 1 Southpoint Drive, El5 Burnaby, B.C., Canada V3N 4 x 8 Dear Ms. Kurschner: This letter Agreement (09NTSSA) between our...

  17. Bonneville Power Administration

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Vintage Rate (as made available by BPA) o All Non-Federal Resources (elect to not purchase power at Tier 2 rates) o Combination of BPA Tier 2 and Non-Federal Resources *...

  18. Mesofluidic magnetohydrodynamic power generation

    E-Print Network [OSTI]

    Fucetola, Jay J

    2012-01-01T23:59:59.000Z

    Much of the previous research into magnetohydrodynamics has involved large-scale systems. This thesis explores the miniaturization and use of devices to convert the power dissipated within an expanding gas flow into ...

  19. GMP Solar Power

    Broader source: Energy.gov [DOE]

    Green Mountain Power, an investor-owned electric utility operating in Vermont, offers a credit to customers with net-metered photovoltaic (PV) systems. In addition to the benefits of net metering,...

  20. Glucose-powered neuroelectronics

    E-Print Network [OSTI]

    Rapoport, Benjamin Isaac

    2011-01-01T23:59:59.000Z

    A holy grail of bioelectronics is to engineer biologically implantable systems that can be embedded without disturbing their local environments, while harvesting from their surroundings all of the power they require. As ...

  1. Power Quality Implications

    E-Print Network [OSTI]

    Hilson, D.

    Electric utilities in the United States spend in excess of one billion dollars annually to maintain or improve the quality of electric power supplied to their customers. Yet, an increasing and alarming number of complaints are being voiced...

  2. Structural power flow measurement

    SciTech Connect (OSTI)

    Falter, K.J.; Keltie, R.F.

    1988-12-01T23:59:59.000Z

    Previous investigations of structural power flow through beam-like structures resulted in some unexplained anomalies in the calculated data. In order to develop structural power flow measurement as a viable technique for machine tool design, the causes of these anomalies needed to be found. Once found, techniques for eliminating the errors could be developed. Error sources were found in the experimental apparatus itself as well as in the instrumentation. Although flexural waves are the carriers of power in the experimental apparatus, at some frequencies longitudinal waves were excited which were picked up by the accelerometers and altered power measurements. Errors were found in the phase and gain response of the sensors and amplifiers used for measurement. A transfer function correction technique was employed to compensate for these instrumentation errors.

  3. Bonneville Power Administration

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    http:www.bpa.gov PR 02 14 BONNEVILLE POWER ADMINISTRATION FOR IMMEDIATE RELEASE Thursday, Jan. 23, 2014 CONTACT: Kevin Wingert, 503-230-4140971-207-8390 or 503-230-5131 BPA...

  4. PowerPoint Presentation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    * No cold or centrifugation steps * Power draw is minimal RNA Prep Module: Digital Microfluidics (DMF) with Macro-to-Micro Fluidic Interface Jebrail MJ et al., Anal Chem 86:3856...

  5. Linear Motor Powered Transportation

    E-Print Network [OSTI]

    Thornton, Richard D.

    This special issue on linear-motor powered transportation covers both supporting technologies and innovative transport systems in various parts of the World, as this technology moves from the lab to commercial operations. ...

  6. Crowd-powered systems

    E-Print Network [OSTI]

    Bernstein, Michael Scott

    2012-01-01T23:59:59.000Z

    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 ...

  7. Power Plant Dams (Kansas)

    Broader source: Energy.gov [DOE]

    This act states the provisions for erection and maintenance of dams. When any person, corporation or city may be desirous of erecting and maintaining a milldam or dam for generating power across...

  8. Green Power Purchasing

    Broader source: Energy.gov [DOE]

    In 2003, Maine's governor established a goal for the state government to buy at least 50% of its electricity from "reasonably priced" renewable-power sources, paid for by energy conservation...

  9. Bonneville Power Administration

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Generation Resource Management, BC Hydro and Power Authority 6911 Southpoint Drive, Tower 15 Burnaby, BC V3N 4X8 Dear Ms. Kurshner: This letter agreement (Agreement) between...

  10. The power tool

    SciTech Connect (OSTI)

    HAYFIELD, J.P.

    1999-02-01T23:59:59.000Z

    POWER Tool--Planning, Optimization, Waste Estimating and Resourcing tool, a hand-held field estimating unit and relational database software tool for optimizing disassembly and final waste form of contaminated systems and equipment.

  11. Power conversion technologies

    SciTech Connect (OSTI)

    Newton, M. A.

    1997-02-01T23:59:59.000Z

    The Power Conversion Technologies thrust area identifies and sponsors development activities that enhance the capabilities of engineering at Lawrence Livermore National Laboratory (LLNL) in the area of solid- state power electronics. Our primary objective is to be a resource to existing and emerging LLNL programs that require advanced solid-state power electronic technologies.. Our focus is on developing and integrating technologies that will significantly impact the capability, size, cost, and reliability of future power electronic systems. During FY-96, we concentrated our research efforts on the areas of (1) Micropower Impulse Radar (MIR); (2) novel solid-state opening switches; (3) advanced modulator technology for accelerators; (4) compact accelerators; and (5) compact pulse generators.

  12. Reactive Power Compensator.

    DOE Patents [OSTI]

    El-Sharkawi, M.A.; Venkata, S.S.; Chen, M.; Andexler, G.; Huang, T.

    1992-07-28T23:59:59.000Z

    A system and method for determining and providing reactive power compensation for an inductive load. A reactive power compensator (50,50') monitors the voltage and current flowing through each of three distribution lines (52a, 52b, 52c), which are supplying three-phase power to one or more inductive loads. Using signals indicative of the current on each of these lines when the voltage waveform on the line crosses zero, the reactive power compensator determines a reactive power compensator capacitance that must be connected to the lines to maintain a desired VAR level, power factor, or line voltage. Alternatively, an operator can manually select a specific capacitance for connection to each line, or the capacitance can be selected based on a time schedule. The reactive power compensator produces control signals, which are coupled through optical fibers (102/106) to a switch driver (110, 110') to select specific compensation capacitors (112) for connections to each line. The switch driver develops triggering signals that are supplied to a plurality of series-connected solid state switches (350), which control charge current in one direction in respect to ground for each compensation capacitor. During each cycle, current flows from ground to charge the capacitors as the voltage on the line begins to go negative from its positive peak value. The triggering signals are applied to gate the solid state switches into a conducting state when the potential on the lines and on the capacitors reaches a negative peak value, thereby minimizing both the potential difference and across the charge current through the switches when they begin to conduct. Any harmonic distortion on the potential and current carried by the lines is filtered out from the current and potential signals used by the reactive power compensator so that it does not affect the determination of the required reactive compensation. 26 figs.

  13. Reactive power compensator

    DOE Patents [OSTI]

    El-Sharkawi, Mohamed A. (Renton, WA); Venkata, Subrahmanyam S. (Woodinville, WA); Chen, Mingliang (Kirkland, WA); Andexler, George (Everett, WA); Huang, Tony (Seattle, WA)

    1992-01-01T23:59:59.000Z

    A system and method for determining and providing reactive power compensation for an inductive load. A reactive power compensator (50,50') monitors the voltage and current flowing through each of three distribution lines (52a, 52b, 52c), which are supplying three-phase power to one or more inductive loads. Using signals indicative of the current on each of these lines when the voltage waveform on the line crosses zero, the reactive power compensator determines a reactive power compensator capacitance that must be connected to the lines to maintain a desired VAR level, power factor, or line voltage. Alternatively, an operator can manually select a specific capacitance for connection to each line, or the capacitance can be selected based on a time schedule. The reactive power compensator produces control signals, which are coupled through optical fibers (102/106) to a switch driver (110, 110') to select specific compensation capacitors (112) for connections to each line. The switch driver develops triggering signals that are supplied to a plurality of series-connected solid state switches (350), which control charge current in one direction in respect to ground for each compensation capacitor. During each cycle, current flows from ground to charge the capacitors as the voltage on the line begins to go negative from its positive peak value. The triggering signals are applied to gate the solid state switches into a conducting state when the potential on the lines and on the capacitors reaches a negative peak value, thereby minimizing both the potential difference and across the charge current through the switches when they begin to conduct. Any harmonic distortion on the potential and current carried by the lines is filtered out from the current and potential signals used by the reactive power compensator so that it does not affect the determination of the required reactive compensation.

  14. PowerPoint Presentation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah Project OfficePower Electronics Power

  15. PowerPoint Presentation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah Project OfficePower Electronics PowerSigurd Hofmann GSI

  16. PowerPoint Presentation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah Project OfficePower Electronics PowerSigurd Hofmann

  17. PowerPoint Presentation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah Project OfficePower Electronics PowerSigurd

  18. PowerPoint Presentation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah Project OfficePower Electronics PowerSigurdTechnologies October

  19. PowerPoint Presentation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah Project OfficePower Electronics PowerSigurdTechnologies

  20. PowerPoint Presentation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah Project OfficePower Electronics PowerSigurdTechnologiesBrainstorm:

  1. Microsoft PowerPoint - Vicksburg District Federal Power Projects...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Federal Power Projects Vicksburg District Federal Power Projects Blakely Mountain Hydro DeGray Hydro DeGray Hydro Narrows Hydro Blakely Mountain Rewind Unit 1 ll Rotor...

  2. Lease of Power Privilege Flowchart: Lease of Power Privilege...

    Open Energy Info (EERE)

    of Power Privilege Flowchart: Lease of Power Privilege Contract through End of Construction Jump to: navigation, search OpenEI Reference LibraryAdd to library Permitting...

  3. Superconducting electric power applications

    SciTech Connect (OSTI)

    Blaugher, R.D. [National Renewable Energy Lab., Golden, CO (United States)

    1997-06-01T23:59:59.000Z

    The application of superconductors to electric power systems has been actively pursued over the past 30 years. Following the realization of high-field, high-current superconductors in 1961, researchers applied these type II materials, such as Nb-Ti and Nb{sub 3}Sn, to laboratory magnets, followed by generators, motors, and transmission cables. Successful prototypes for the latter were constructed and tested by the mid-1980s. It is fair to assume that widespread utility acceptance of these low-temperature superconducting (LTS) power applications was compromised by the necessity for liquid helium cooling. The discovery of the high-temperature superconductors (HTS) in 1986, which offered the prospect for liquid nitrogen cooling, provided renewed interest and impetus and spurred the development of HTS power components. The expectations for HTS power components are, in fact, near realization, as a result of the rapid worldwide progress in HTS wire and tape development. This paper will review the history and present status of superconducting power-system-related applications. The major problems facing this technology and the prospects for commercialization and eventual integration into the utility sector will be discussed. General acceptance for superconducting power equipment by the electric utilities and other end-users will ultimately be based on the respective system performance, efficiency, reliability and maintenance, operational lifetime, and installed cost compared to conventional technologies.

  4. GaN power electronics

    E-Print Network [OSTI]

    Lu, Bin

    Between 5 and 10% of the world's electricity is wasted as dissipated heat in the power electronic circuits needed, for example, in computer power supplies, motor drives or the power inverters of photovoltaic systems. This ...

  5. Nuclear Power Generating Facilities (Maine)

    Broader source: Energy.gov [DOE]

    The first subchapter of the statute concerning Nuclear Power Generating Facilities provides for direct citizen participation in the decision to construct any nuclear power generating facility in...

  6. Power System Dispatcher (Technical Writer)

    Broader source: Energy.gov [DOE]

    (See Frequently Asked Questions for more information). Where would I be working? Western Area Power Administration Rocky Mountain Region Power System Operations Transmission Switching, (J4100) 5555...

  7. Power network analysis and optimization

    E-Print Network [OSTI]

    Zhang, Wanping

    2009-01-01T23:59:59.000Z

    chip power supply network optimization using multigrid-basedchip decoupling capacitor optimization for high- performanceSapatnekar, “Analysis and optimization of structured power/

  8. Offshore Wind Power Farm Environmental Impact Assessment

    E-Print Network [OSTI]

    Horns Rev Offshore Wind Power Farm Environmental Impact Assessment on Water Quality #12;Prepared with a planned 150 MW offshore wind farm at Horns Rev, an assessment was made of the effects the wind farm would for the preparation of EIA studies for offshore wind farms." Horns Rev is situated off Blåvands Huk, which is Denmark

  9. Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2012-01-01T23:59:59.000Z

    Whole-floor effective lighting power density (LPD) for oneto an installed lighting power density considered necessarythat has the maximum Lighting Power Density (LPD) allowed by

  10. Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2011-01-01T23:59:59.000Z

    Whole-floor effective lighting power density (LPD) for oneto an installed lighting power density considered necessarythat has the maximum Lighting Power Density (LPD) allowed by

  11. Purchasing Renewable Power | Department of Energy

    Energy Savers [EERE]

    Products & Technologies Renewable Energy Purchasing Renewable Power Purchasing Renewable Power Federal agencies can purchase renewable power or renewable energy certificates...

  12. Photonic-powered cable assembly

    DOE Patents [OSTI]

    Sanderson, Stephen N; Appel, Titus James; Wrye, IV, Walter C

    2014-06-24T23:59:59.000Z

    A photonic-cable assembly includes a power source cable connector ("PSCC") coupled to a power receive cable connector ("PRCC") via a fiber cable. The PSCC electrically connects to a first electronic device and houses a photonic power source and an optical data transmitter. The fiber cable includes an optical transmit data path coupled to the optical data transmitter, an optical power path coupled to the photonic power source, and an optical feedback path coupled to provide feedback control to the photonic power source. The PRCC electrically connects to a second electronic device and houses an optical data receiver coupled to the optical transmit data path, a feedback controller coupled to the optical feedback path to control the photonic power source, and a photonic power converter coupled to the optical power path to convert photonic energy received over the optical power path to electrical energy to power components of the PRCC.

  13. Photonic-powered cable assembly

    DOE Patents [OSTI]

    Sanderson, Stephen N.; Appel, Titus James; Wrye, IV, Walter C.

    2013-01-22T23:59:59.000Z

    A photonic-cable assembly includes a power source cable connector ("PSCC") coupled to a power receive cable connector ("PRCC") via a fiber cable. The PSCC electrically connects to a first electronic device and houses a photonic power source and an optical data transmitter. The fiber cable includes an optical transmit data path coupled to the optical data transmitter, an optical power path coupled to the photonic power source, and an optical feedback path coupled to provide feedback control to the photonic power source. The PRCC electrically connects to a second electronic device and houses an optical data receiver coupled to the optical transmit data path, a feedback controller coupled to the optical feedback path to control the photonic power source, and a photonic power converter coupled to the optical power path to convert photonic energy received over the optical power path to electrical energy to power components of the PRCC.

  14. High power connection system

    DOE Patents [OSTI]

    Schaefer, Christopher E. (Warren, OH); Beer, Robert C. (Noblesville, IN); McCall, Mark D. (Youngstown, OH)

    2000-01-01T23:59:59.000Z

    A high power connection system adapted for automotive environments which provides environmental and EMI shielding includes a female connector, a male connector, and a panel mount. The female connector includes a female connector base and a snap fitted female connector cover. The male connector includes a male connector base and a snap fitted male connector cover. The female connector base has at least one female power terminal cavity for seatably receiving a respective female power terminal. The male connector base has at least one male power terminal cavity for seatably receiving a respective male power terminal. The female connector is covered by a cover seal and a conductive shroud. A pair of lock arms protrude outward from the front end of the male connector base, pass through the panel mount and interface with a lever of a lever rotatably connected to the shroud to thereby mechanically assist mating of the male and female connectors. Safety terminals in the male and female connectors provide a last-to-connect-first-to-break connection with an HVIL circuit.

  15. Sixth Power Plan northwest Power and Conservation Council

    E-Print Network [OSTI]

    -Fired Generating Resources #12;Sixth Power Plan AssessMenT reporT Resource Adequacy 40Sixth Power Plan northwest Power and Conservation Council March 13, 2013 Mid-term assessment report #12;PaGe 2 > Mid-TerM AssessMenT reporT > Sixth Power Plan Contents 04 Executive Summary 06 Situation

  16. Running Head: TESTOSTERONE AND POWER Testosterone and power

    E-Print Network [OSTI]

    Schultheiss, Oliver C.

    Running Head: TESTOSTERONE AND POWER Testosterone and power Steven J. Stanton and Oliver C. Schultheiss University of Michigan, Ann Arbor, MI, USA To appear in: K. Dowding (Ed.), Encyclopedia of power-647-9440, email: stantons@umich.edu #12;Testosterone and power 2 Across many studies in humans, two functional

  17. Virtualizing Power Cords by Wireless Power Transmission and Energy Harvesting

    E-Print Network [OSTI]

    Tentzeris, Manos

    technology can be called the virtualization of the communication line, wireless power transmissionVirtualizing Power Cords by Wireless Power Transmission and Energy Harvesting Yoshihiro Kawahara1 for the virtualization of power cords for electrical devices. The first approach is a new concept for routing electric

  18. Preventing power outages Power system contingency analysis on the GPU

    E-Print Network [OSTI]

    Vuik, Kees

    problem. Moreover, the power system has to keep functioning properly even when a transmission line failsPreventing power outages Power system contingency analysis on the GPU To provide electricity generators, nuclear power plants, wind turbines, etc.) and a network of lines and cables to transmit

  19. VirtualPower: Coordinated Power Management in Virtualized Enterprise Systems

    E-Print Network [OSTI]

    Yang, Junfeng

    VirtualPower: Coordinated Power Management in Virtualized Enterprise Systems Ripal Nathuji CERCS Institute of Technology Atlanta, GA 30032 schwan@cc.gatech.edu ABSTRACT Power management has become. This paper explores how to inte- grate power management mechanisms and policies with the virtualization

  20. Reducing Power Load Fluctuations on Ships Using Power Redistribution Control

    E-Print Network [OSTI]

    Johansen, Tor Arne

    controller is demonstrated through simulation studies on a supply vessel power plant, using the SIMULINK plant with electric propulsion, the power generation will con- sist of multiple engines, whereReducing Power Load Fluctuations on Ships Using Power Redistribution Control Damir Radan,1 Asgeir J