Powered by Deep Web Technologies
Note: This page contains sample records for the topic "improved power system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Improved Refractories for IGCC Power Systems  

SciTech Connect (OSTI)

The gasification of coal, petroleum residuals, and biomass provides the opportunity to produce energy more efficiently, and with significantly less environmental impact, than more-conventional combustion-based processes. In addition, the synthesis gas that is the product of the gasification process offers the gasifier operator the option of ''polygeneration'', i.e., the production of alternative products instead of power should it be economically favorable to do so. Because of these advantages, gasification is a key element in the U.S. Department of Energy?s Vision 21 power system. However, issues with both the reliability and the economics of gasifier operation will have to be resolved before gasification will be widely adopted by the power industry. Central to both increased reliability and economics is the development of materials with longer service lives in gasifier systems that can provide extended periods of continuous gasifier operation. The focus of the Advanced Refractories for Gasification project at the Albany Research Center is to develop improved materials capable of withstanding the harsh, high-temperature environment created by the gasification reaction, and includes both the refractory lining that insulates the slagging gasifier, as well as the thermocouple assemblies that are utilized to monitor gasifier operating temperatures. Current generation refractory liners in slagging gasifiers are typically replaced every 10 to 18 months, at costs ranging up to $2,000,000. Compounding materials and installation costs are the lost-opportunity costs for the three to four weeks that the gasifier is off-line for the refractory exchange. Current generation thermocouple devices rarely survive the gasifier start-up process, leaving the operator with no real means of temperature measurement during gasifier operation. As a result, the goals of this project include the development of a refractory liner with a service life at least double that of current generation refractory materials, and the design of a thermocouple protection system that will allow accurate temperature monitoring for extended periods of time.

Dogan, Cynthia P.; Kwong, Kyei-Sing; Bennett, James P.; Chinn, Richard E.; Dahlin, Cheryl L.

2002-01-01T23:59:59.000Z

2

Improving Turbocharged Diesel Engine Operation with Turbo Power Assist System  

E-Print Network [OSTI]

Improving Turbocharged Diesel Engine Operation with Turbo Power Assist System I. Kolmanovsky A. G. In this pa- per we investigate the coupling of a power assist system at the turbocharger shaft of a diesel representation of a diesel engine with a turbocharger power assist system. A turbocharger power assist system

Stefanopoulou, Anna

3

Improved refractories for slagging gasifiers in IGCC power systems  

SciTech Connect (OSTI)

Most gasifiers are operated for refining, chemical production, and power generation. They are also considered a possible future source of H2 for future power systems under consideration. A gasifier fulfills these roles by acting as a containment vessel to react carbon-containing raw materials with oxygen and water using fluidized-bed, moving-bed, or entrained-flow systems to produce CO and H2, along with other gaseous by-products including CO2, CH4, SOx, HS, and/or NOx. The gasification process provides the opportunity to produce energy more efficiently and with less environmental impact than more conventional combustion processes. Because of these advantages, gasification is viewed as one of the key processes in the U.S. Department of Energy?s vision of an advanced power system for the 21st Century. However, issues with both the reliability and the economics of gasifier operation will have to be resolved before gasification will be widely adopted by the power industry. Central to both enhanced reliability and economics is the development of materials with longer service lives in gasifier systems that can provide extended periods of continuous, trouble-free gasifier operation. The focus of the Advanced Refractories for Gasification project at the Albany Research Center (ARC) is to develop improved refractory liner materials capable of withstanding the harsh, high-temperature environment created by the gasification reaction. Current generation refractory liners in slagging gasifiers are typically replaced every 3 to 18 months at costs ranging up to $1,000,000 or more, depending upon the size of the gasification vessel. Compounding materials and installation costs are the lost-opportunity costs for the time that the gasifier is off-line for refractory repair/exchange. The goal of this project is to develop new refractory materials or to extend the service life of refractory liner materials currently used to at least 3 years. Post-mortem analyses of refractory brick removed from slagging commercial gasifiers and of laboratory produced refractory materials has indicated that slag corrosion and structural spalling are the primary causes of refractory failure. Historically, refractory materials with chrome oxide content as high as 90 pct have been found necessary to achieve the best refractory service life. To meet project goals, an improved high chrome oxide refractory material containing phosphate additions was developed at ARC, produced commercially, and is undergoing gasifier plant trials. Early laboratory tests on the high chrome oxide material suggested that phosphate additions could double the service life of currently available high chromium oxide refractories, translating into a potential savings of millions of dollars in annual gasifier operating costs, as well a significant increase in gasifier on-line availability. The ARC is also researching the potential of no-chrome/low-chrome oxide refractory materials for use in gasifiers. Some of the driving forces for no-chrome/low-chrome oxide refractories include the high cost and manufacturing difficulties of chrome oxide refractories and the fact that they have not met the performance requirements of commercial gasifiers. Development of no/low chrome oxide refractories is taking place through an examination of historical research, through the evaluation of thermodynamics, and through the evaluation of phase diagram information. This work has been followed by cup tests in the laboratory to evaluate slag/refractory interactions. Preliminary results of plant trials and the results of ARC efforts to develop no-chrome/low chrome refractory materials will be presented.

Bennett, James P.; Kwong, Kyei-Sing; Powell, Cynthia A.; Chinn, Richard E.

2004-01-01T23:59:59.000Z

4

V2G Technology for Designing Active Filter System to Improve Wind Power Quality  

E-Print Network [OSTI]

V2G Technology for Designing Active Filter System to Improve Wind Power Quality F. R. Islam, H. R factor correction and harmonics current compensation. Index Terms--PHEVs, V2G, Wind Power, Battery Scheme to design active filter is proposed here to improve the quality of wind power output. Harmonics is one

Pota, Himanshu Roy

5

Study Shows Active Power Controls from Wind May Increase Revenues and Improve System Reliability  

Broader source: Energy.gov [DOE]

The DOE Wind Program and the National Renewable Energy Laboratory recently published a study conducted in collaboration with the Electric Power Research Institute and the University of Colorado. Researchers examined how the contribution of wind power providing active power controls could benefit the total power system economics, increase revenue streams, and improve the reliability and security of the nation’s power system, all while having negligible impacts on the turbine and its components.

6

Improved Refractory Materials for Slagging Gasifiers in IGCC Power Systems  

SciTech Connect (OSTI)

Gasifiers are the heart of Integrated Gasification Combined Cycle (IGCC) power system currently being developed as part of the DOE's Vision 21 Fossil Fuel Power Plant. A gasification chamber is a high pressure/high temperature reaction vessel used to contain a mixture of O2, H2O, and coal (or other carbon containing materials) while it is converted into thermal energy and chemicals (H2, CO, and CH4). IGCC systems are expected to play a dominant role in meeting the Nation's future energy needs. Gasifiers are also used to produce chemicals that serve as feedstock for other industrial processes, and are considered a potential source of H2 in applications such as fuel cells. A distinct advantage of gasifiers is their ability to meet or exceed current and anticipated future environmental emission regulations. Also, because gasification systems are part of a closed circuit, gasifiers are considered process ready to capture CO2 emissions for reuse or processing should that become necessary or economically feasible in the future. The service life of refractory liners for gasifiers has been identified by users as a critical barrier to IGC

Bennett, James P.; Kwong, Kyei-Sing; Powell, Cynthia A.; Krabbe, Rick; Thomas, Hugh

2005-01-01T23:59:59.000Z

7

Impact of Improved Solar Forecasts on Bulk Power System Operations in ISO-NE: Preprint  

SciTech Connect (OSTI)

The diurnal nature of solar power is made uncertain by variable cloud cover and the influence of atmospheric conditions on irradiance scattering processes. Its forecasting has become increasingly important to the unit commitment and dispatch process for efficient scheduling of generators in power system operations. This study examines the value of improved solar power forecasting for the Independent System Operator-New England system. The results show how 25% solar power penetration reduces net electricity generation costs by 22.9%.

Brancucci Martinez-Anido, C.; Florita, A.; Hodge, B. M.

2014-09-01T23:59:59.000Z

8

Reliability Improvement Programs in Steam Distribution and Power Generation Systems  

E-Print Network [OSTI]

In the reliability and efficiency of the system. Recent studies have shownt hat more than 40% of all In stalled steam traps and 20% of certain types of valves need some form of corrective action. The majority of all high backpressure problems In condensate return... of the early 80's, energ~ I conservation was a buzzword. Excess funds were avall,8ble for high ROI projects and capital improvements were rpade to gain production efficiency. The increase in energy tosts and consumer spending triggered a moderate Increase...

Petto, S.

9

Improved Power Grid Stability and Efficiency with a Building-Energy Cyber-Physical System  

E-Print Network [OSTI]

, or for sporadic reasons, for example a power plant goes offline unexpectedly (e.g., due to an earthquake or stagnant winds to propel wind turbines). Dur- ing an episode, the power grid operators must contend1 Improved Power Grid Stability and Efficiency with a Building-Energy Cyber-Physical System Mary

10

Impact of Improved Solar Forecasts on Bulk Power System Operations in ISO-NE (Presentation)  

SciTech Connect (OSTI)

The diurnal nature of solar power is made uncertain by variable cloud cover and the influence of atmospheric conditions on irradiance scattering processes. Its forecasting has become increasingly important to the unit commitment and dispatch process for efficient scheduling of generators in power system operations. This presentation is an overview of a study that examines the value of improved solar forecasts on Bulk Power System Operations.

Brancucci Martinez-Anido, C.; Florita, A.; Hodge, B.M.

2014-11-01T23:59:59.000Z

11

Substation based data interpretation techniques for improved power system management  

SciTech Connect (OSTI)

There is now considerable pressure on electric utilities to operate their systems in the most efficient manner possible and to provide increased quality of service to customers. This pressure, coupled with the decreasing availability of reserve margins dictates that there is a requirement for comprehensive system operation support through, among other things, the provision of quality information relating to the behavior of the primary and secondary systems. This paper will show how the data available within modern substation control and management systems can be exploited in a cost-effective manner, through the implementation of advanced substation functions in an open systems environment. Certain functions which are presently carried out at the control center could be distributed (or partially distributed) to the substation. These functions may provide the utility staff with quality information, which can in turn be used to satisfy the objectives of increasing quality and security of supply, in addition to optimizing the utility`s information, maintenance and asset management functions.

Booth, C.; McDonald, J.R. [Univ. of Strathclyde, Glasgow (United Kingdom). Centre for Electrical Power Engineering] [Univ. of Strathclyde, Glasgow (United Kingdom). Centre for Electrical Power Engineering; Laycock, W.J.

1997-04-01T23:59:59.000Z

12

Initial Studies on Actionable Control for Improving Small Signal Stability in Interconnected Power Systems  

SciTech Connect (OSTI)

Power consumption and demand continues to grow around the world. As the electric power grid continues to be put under more stress, the conditions of instability are more likely to occur. One cause of such instabilities is intearea oscillations, such as the oscillation that resulted in the August 10, 1996 blackout of the WECC. This paper explores different potential operations of different devices on the power system to improve the damping of these interarea oscillations using two different simulation models

Tuffner, Francis K.; Huang, Zhenyu; Zhou, Ning; Guttromson, Ross T.; Jayantilal, Avnaesh

2010-06-14T23:59:59.000Z

13

An improved framework for power grid vulnerability analysis considering critical system features  

Science Journals Connector (OSTI)

Abstract In recent years the rapid development of complex network theory has provided a new angle on the vulnerability analysis of a power grid. However, current analysis models are usually general ones that may ignore some specific features of power systems. In order to address the issue, this paper proposes an improved framework for the vulnerability analysis of power grids. Firstly, the traditional topology based graph model is improved by depicting a power grid as a weighted graph based on the reactance matrix. Secondly, the concept of load is redefined by using power angle information. Thirdly, the power flow constraints are adopted instead of the shortest path based flow scheme. Based on the proposed framework, an improved dynamic analysis model is developed. In addition, numerical simulations for both a general traditional model and the proposed model are investigated based on the IEEE 118-bus system respectively. The comparison demonstrates that the improved model is more effective and efficient for the vulnerability analysis of a power grid.

YuanYu Dai; Guo Chen; ZhaoYang Dong; YuSheng Xue; David J. Hill; Yuan Zhao

2014-01-01T23:59:59.000Z

14

HVDC Control Strategies to Improve Transient Stability in Interconnected Power Systems  

E-Print Network [OSTI]

HVDC Control Strategies to Improve Transient Stability in Interconnected Power Systems J. Hazra Dpt of Li`ege, Belgium, dernst@ulg.ac.be Abstract--This paper presents three HVDC modulation strate- gies flow settings through the HVDC-links. The proposed techniques are tested on the IEEE 24-Bus reliability

Boyer, Edmond

15

Improving the liquid-cooling systems of power units and technological equipment  

Science Journals Connector (OSTI)

Processes in the liquid cooling systems of power units and technological equipment are considered. Criteria ... of the energy and resource aspects of the cooling systems.

V. A. Zhukov

2011-12-01T23:59:59.000Z

16

Development Of Algorithms For Improved Planning And Operation Of Deregulated Power Systems.  

E-Print Network [OSTI]

??Transmission pricing and congestion management are two important aspects of modern power sectors working under a deregulated environment or moving towards a deregulated system (open… (more)

Surendra, S

2012-01-01T23:59:59.000Z

17

Power system  

DOE Patents [OSTI]

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

Hickam, Christopher Dale (Glasford, IL)

2008-03-18T23:59:59.000Z

18

Power Factor Improvement  

E-Print Network [OSTI]

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...

Viljoen, T. A.

1979-01-01T23:59:59.000Z

19

A linear MOSFET regulation system to improve the performance of the booster-ramping power supplies at the APS.  

SciTech Connect (OSTI)

The APS booster ring uses ramping power supplies to power the sextupole, quadrupole, and dipole magnets as the beam energy ramps up linearly to 7 GeV. Due to the circuit topology used, those supplies are unable to follow the linear ramp to the desired accuracy. The best regulation achieved is 0.5% while 0.1 % is desired. In addition to the unsatisfying regulation, those supplies are sensitive to AC line perturbations and are not able to reject AC line noises higher than a few tens of Hertz. To improve the performance, a linear MOSFET regulation system using paralleled MOSFET devices in series with the power supply is proposed. The system uses a real-time current feedback loop to force the MOSFETs to work in the linear operation mode. By using this linear MOSFET regulator, the voltage drop on MOSFETs, and hence the voltage imposed on magnets, can be regulated very quickly. As a result, the regulation of the magnet current can be improved significantly. Experiments and simulation have been performed to verify the proposed method. Results show that, with the linear regulator, the current regulation can be improved to better than 0.1%. Because of the high bandwidth of the linear regulator, it can reduce the harmonic content in the output current as well as reject the AC line disturbance.

Feng, G.; Deriy, B.; Wang, J.; Shang, H.; Xu, S.

2008-01-01T23:59:59.000Z

20

Probability-Based Software for Grid Optimization: Improved Power System Operations Using Advanced Stochastic Optimization  

SciTech Connect (OSTI)

GENI Project: Sandia National Laboratories is working with several commercial and university partners to develop software for market management systems (MMSs) that enable greater use of renewable energy sources throughout the grid. MMSs are used to securely and optimally determine which energy resources should be used to service energy demand across the country. Contributions of electricity to the grid from renewable energy sources such as wind and solar are intermittent, introducing complications for MMSs, which have trouble accommodating the multiple sources of price and supply uncertainties associated with bringing these new types of energy into the grid. Sandia’s software will bring a new, probability-based formulation to account for these uncertainties. By factoring in various probability scenarios for electricity production from renewable energy sources in real time, Sandia’s formula can reduce the risk of inefficient electricity transmission, save ratepayers money, conserve power, and support the future use of renewable energy.

None

2012-02-24T23:59:59.000Z

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


21

Cold side thermal energy storage system for improved operation of air cooled power plants  

E-Print Network [OSTI]

Air cooled power plants experience significant performance fluctuations as plant cooling capacity reduces due to higher daytime temperature than nighttime temperature. The purpose of this thesis is to simulate the detailed ...

Williams, Daniel David

2012-01-01T23:59:59.000Z

22

Improved measurement placement and topology processing in power system state estimation  

E-Print Network [OSTI]

and the branch power flow measurements. The advanced level design keeps the network observable under certain contingencies. To preserve as many substation measurements as possible and maintain the net-work observability, an advanced network topology processor...

Wu, Yang

2009-06-02T23:59:59.000Z

23

Problems of improving the methods of technicoeconomic substantiation of pumped-storage stations in power systems  

Science Journals Connector (OSTI)

The method of substantiating pumped-storage stations requires further development and perfection toward a more complete consideration of their system effect.

V. S. Sharygin

1981-02-01T23:59:59.000Z

24

PSO2004/FU5766 Improved wind power prediction  

E-Print Network [OSTI]

PSO2004/FU5766 Improved wind power prediction Spatio-temporal modelling of short-term wind power of wind power generation in power systems. The quality of the forecast is very important, and a reliable estimate of the uncertainty of the forecast is known to be essential. Today the forecasts of wind power

25

Power management system  

DOE Patents [OSTI]

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

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

2007-10-02T23:59:59.000Z

26

An intelligent neuro-fuzzy logic controller for induction generator based wind generation to improve power system stability  

Science Journals Connector (OSTI)

Power systems are non-linear and they are often subjected to random disturbances. This paper deals with the application of the intelligent neuro-fuzzy technique to the design of the robust power system stabiliser for power system oscillation damping enhancement in a wind turbine based power system network. The stabilising signal is computed in real time using suitable fuzzy membership functions depending upon the state of the generator on the speed-acceleration phase plane. These input signals are first characterised by a set of linguistic variables using fuzzy set notations. The fuzzy relation matrix, which gives the relationship between stabiliser inputs and stabiliser output, allows a set of fuzzy logic operations that are performed on stabiliser inputs to obtain the desired stabiliser output. The performance of the proposed controller is analysed in a single induction machine-infinite bus power system data subjected to various dynamic and transient disturbances. The proposed intelligent neuro-fuzzy control scheme exhibits a superior damping performance in comparison to the conventional controllers. Its simple architecture reduces the computational burden, thereby making it attractive for real-time implementation.

N. Albert Singh; K.A. Muraleedharan; K. Gomathy

2009-01-01T23:59:59.000Z

27

International Atomic Energy Agency specialists meeting on experience in ageing, maintenance, and modernization of instrumentation and control systems for improving nuclear power plant availability  

SciTech Connect (OSTI)

This report presents the proceedings of the Specialist`s Meeting on Experience in Aging, Maintenance and Modernization of Instrumentation and Control Systems for Improving Nuclear Power Plant Availability that was held at the Ramada Inn in Rockville, Maryland on May 5--7, 1993. The Meeting was presented in cooperation with the Electric Power Research Institute, Oak Ridge National Laboratory and the International Atomic Energy Agency. There were approximately 65 participants from 13 countries at the Meeting. Individual reports have been cataloged separately.

Not Available

1993-10-01T23:59:59.000Z

28

Guidelines for Power Factor Improvement Projects  

E-Print Network [OSTI]

Power factor is an indication of electrical system efficiency. Low power factor, or low system efficiency, may be due to one or more causes, including lightly loaded transformers, oversized electric motors, and harmonic-generating non-linear loads...

Massey, G. W.

29

OIT geothermal system improvements  

SciTech Connect (OSTI)

The Oregon Institute of Technology campus has been heated by the direct use of geothermal fluids since 1964. The 11 building campus uses geothermal energy for space heating/cooling, domestic water heating, the swimming pool and sidewalk snow melt. The hydronic system was designed to use the geothermal fluids directly in heating units. In the 1970s, problems were experienced with the design and operation of the well pumps, buried piping and heating equipment. Beginning in the early 1980`s, many improvements were made to the system due to equipment performance problems and resource management requirements. This paper discusses those improvements that included the distribution system, cooling, well pumps, cascading of geothermal fluids, installation of isolation plate heat exchangers in each building and drilling of two injection wells. Plans for future improvements include better controls to manage energy use and data monitoring systems for individual buildings, and instrumentation to monitor well pump performance.

Lienau, P.J.

1996-12-31T23:59:59.000Z

30

Crowd-powered systems  

E-Print Network [OSTI]

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

Bernstein, Michael Scott

2012-01-01T23:59:59.000Z

31

Improved vortex reactor system  

DOE Patents [OSTI]

An improved vortex reactor system for affecting fast pyrolysis of biomass and Refuse Derived Fuel (RDF) feed materials comprising: a vortex reactor having its axis vertically disposed in relation to a jet of a horizontally disposed steam ejector that impels feed materials from a feeder and solids from a recycle loop along with a motive gas into a top part of said reactor.

Diebold, James P. (Lakewood, CO); Scahill, John W. (Evergreen, CO)

1995-01-01T23:59:59.000Z

32

Improved and Safer Nuclear Power  

Science Journals Connector (OSTI)

...provides steam for the turbine generator. The reactor...conversion systems. The residual heat removal path consists...modular high-temperature gas-cooled reactor (MHTGR...primary focus in advanced gas-cooled reactor develop-ment...538 MWe, from two turbine generators; net efficiency...

JOHN J. TAYLOR

1989-04-21T23:59:59.000Z

33

Investigation on the Benefits of Safety Margin Improvement in CANDU Nuclear Power Plant Using an FPGA-based Shutdown System.  

E-Print Network [OSTI]

??The relationship between response time and safety margin of CANadian Deuterium Uranium (CANDU) nuclear power plant (NPP) is investigated in this thesis. Implementation of safety… (more)

She, Jingke

2012-01-01T23:59:59.000Z

34

Improved vortex reactor system  

DOE Patents [OSTI]

An improved vortex reactor system is described for affecting fast pyrolysis of biomass and Refuse Derived Fuel (RDF) feed materials comprising: a vortex reactor having its axis vertically disposed in relation to a jet of a horizontally disposed steam ejector that impels feed materials from a feeder and solids from a recycle loop along with a motive gas into a top part of said reactor. 12 figs.

Diebold, J.P.; Scahill, J.W.

1995-05-09T23:59:59.000Z

35

Dynamic power systems for power generation  

SciTech Connect (OSTI)

The characteristics of dynamic power systems have considerable potential value, especially for the space station. The base of technology that makes these dynamic power systems practical is reviewed. The following types of power-generating systems are examined herein: organic Rankine cycle, potassium Rankine cycle, Brayton cycle, and Stirling cycle.

English, R.E.

1984-04-01T23:59:59.000Z

36

Power System Dispatcher  

Broader source: Energy.gov [DOE]

As a Power System Dispatcher, you will be working in the Operations Center in Springfield, Missouri as part of the Division of Scheduling & Operations, Office of Corporate Operations. You will...

37

NSTX Electrical Power Systems  

SciTech Connect (OSTI)

The National Spherical Torus Experiment (NSTX) has been designed and installed in the existing facilities at Princeton Plasma Physic Laboratory (PPPL). Most of the hardware, plant facilities, auxiliary sub-systems, and power systems originally used for the Tokamak Fusion Test Reactor (TFTR) have been used with suitable modifications to reflect NSTX needs. The design of the NSTX electrical power system was tailored to suit the available infrastructure and electrical equipment on site. Components were analyzed to verify their suitability for use in NSTX. The total number of circuits and the location of the NSTX device drove the major changes in the Power system hardware. The NSTX has eleven (11) circuits to be fed as compared to the basic three power loops for TFTR. This required changes in cabling to insure that each cable tray system has the positive and negative leg of cables in the same tray. Also additional power cabling had to be installed to the new location. The hardware had to b e modified to address the need for eleven power loops. Power converters had to be reconnected and controlled in anti-parallel mode for the Ohmic heating and two of the Poloidal Field circuits. The circuit for the Coaxial Helicity Injection (CHI) System had to be carefully developed to meet this special application. Additional Protection devices were designed and installed for the magnet coils and the CHI. The thrust was to making the changes in the most cost-effective manner without compromising technical requirements. This paper describes the changes and addition to the Electrical Power System components for the NSTX magnet systems.

A. Ilic; E. Baker; R. Hatcher; S. Ramakrishnan; et al

1999-12-16T23:59:59.000Z

38

Wind power generating system  

SciTech Connect (OSTI)

Normally feathered propeller blades of a wind power generating system unfeather in response to the actuation of a power cylinder that responds to actuating signals. Once operational, the propellers generate power over a large range of wind velocities. A maximum power generation design point signals a feather response of the propellers so that once the design point is reached no increase in power results, but the system still generates power. At wind speeds below this maximum point, propeller speed and power output optimize to preset values. The propellers drive a positive displacement pump that in turn drives a positive displacement motor of the swash plate type. The displacement of the motor varies depending on the load on the system, with increasing displacement resulting in increasing propeller speeds, and the converse. In the event of dangerous but not clandestine problems developing in the system, a control circuit dumps hydraulic pressure from the unfeathering cylinder resulting in a predetermined, lower operating pressure produced by the pump. In the event that a problem of potentially cladestine consequence arises, the propeller unfeathering cylinder immediately unloads. Upon startup, a bypass around the motor is blocked, applying a pressure across the motor. The motor drives the generator until the generator reaches a predetermined speed whereupon the generator is placed in circuit with a utility grid and permitted to motor up to synchronous speed.

Schachle, Ch.; Schachle, E. C.; Schachle, J. R.; Schachle, P. J.

1985-03-12T23:59:59.000Z

39

Alternative off-site power supply improves nuclear power plant safety  

Science Journals Connector (OSTI)

Abstract A reliable power system is important for safe operation of the nuclear power plants. The station blackout event is of great importance for nuclear power plant safety. This event is caused by the loss of all alternating current power supply to the safety and non-safety buses of the nuclear power plant. In this study an independent electrical connection between a pumped-storage hydro power plant and a nuclear power plant is assumed as a standpoint for safety and reliability analysis. The pumped-storage hydro power plant is considered as an alternative power supply. The connection with conventional accumulation type of hydro power plant is analysed in addition. The objective of this paper is to investigate the improvement of nuclear power plant safety resulting from the consideration of the alternative power supplies. The safety of the nuclear power plant is analysed through the core damage frequency, a risk measure assess by the probabilistic safety assessment. The presented method upgrades the probabilistic safety assessment from its common traditional use in sense that it considers non-plant sited systems. The obtained results show significant decrease of the core damage frequency, indicating improvement of nuclear safety if hydro power plant is introduced as an alternative off-site power source.

Blaže Gjorgiev; Andrija Volkanovski; Duško Kan?ev; Marko ?epin

2014-01-01T23:59:59.000Z

40

Improving the Performance of the Truncated Fourier Series Least Squares (TFSLS)Power System Load Model Using an Artificial Neural Network Paradigm  

Science Journals Connector (OSTI)

Power System Load models have a wide range of application in the electric power industry including applications involving: (i) load management policy monitoring; (ii) assisting with ... A method that has been uti...

Shonique L. Miller; Gary L. Lebby…

2010-01-01T23:59:59.000Z

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


41

Analysis and design of high frequency link power conversion systems for fuel cell power conditioning  

E-Print Network [OSTI]

In this dissertation, new high frequency link power conversion systems for the fuel cell power conditioning are proposed to improve the performance and optimize the cost, size, and weight of the power conversion systems. The first study proposes a...

Song, Yu Jin

2005-11-01T23:59:59.000Z

42

Solar powered desalination system  

E-Print Network [OSTI]

Production Requirements Energy Source Natural Gas Nuclear SolarSolar Energy Calculator using Google Maps 23 Table 1.24: PV System Power ProductionSolar Desalination Systems…………………………………………………34 Table 1.20: Energy Requirements of Desalination Methods…………………………….35 Table 1.21: PEC Hydrogen Production………………………………………………….

Mateo, Tiffany Alisa

2011-01-01T23:59:59.000Z

43

Power Systems Development Facility  

SciTech Connect (OSTI)

In support of technology development to utilize coal for efficient, affordable, and environmentally clean power generation, the Power Systems Development Facility (PSDF), located in Wilsonville, Alabama, has routinely demonstrated gasification technologies using various types of coals. The PSDF is an engineering scale demonstration of key features of advanced coal-fired power systems, including a Transport Gasifier, a hot gas particulate control device, advanced syngas cleanup systems, and high-pressure solids handling systems. This final report summarizes the results of the technology development work conducted at the PSDF through January 31, 2009. Twenty-one major gasification test campaigns were completed, for a total of more than 11,000 hours of gasification operation. This operational experience has led to significant advancements in gasification technologies.

Southern Company Services

2009-01-31T23:59:59.000Z

44

Improving Regional Air Quality with Wind Power  

Wind Powering America (EERE)

Improving Regional Air Quality with Improving Regional Air Quality with Wind Power National Renewable Energy Laboratory Improving Regional Air Quality with Wind Power National Renewable Energy Laboratory * Clean Air Act (CAA) framework * Air quality challenges * CAA policies as market drivers * Met. Wash. Council of Governments (MWCOG) case study * Environmental Protection Agency (EPA) guidance on State Implementation Plan (SIP) credit for EERE * Model SIP documentation for wind purchases * Related marketing innovations Overview Overview * CAA requires regional air quality plans (SIPs) * "Window of opportunity" - Revised SIPs required by 2006/2007 to meet new 8-hour ozone and PM standards - August 2004 EPA guidance and NREL model SIP documentation for wind purchases Clean Air Act Framework Clean Air Act Framework

45

POWER GRID DYNAMICS: ENHANCING POWER SYSTEM OPERATION THROUGH PRONY ANALYSIS  

SciTech Connect (OSTI)

Prony Analysis is a technique used to decompose a signal into a series consisting of weighted complex exponentials and promises to be an effi cient way of recognizing sensitive lines during faults in power systems such as the U.S. Power grid. Positive Sequence Load Flow (PSLF) was used to simulate the performance of a simple two-area-four-generator system and the reaction of the system during a line fault. The Dynamic System Identifi cation (DSI) Toolbox was used to perform Prony analysis and use modal information to identify key transmission lines for power fl ow adjustment to improve system damping. The success of the application of Prony analysis methods to the data obtained from PSLF is reported, and the key transmission line for adjustment is identifi ed. Future work will focus on larger systems and improving the current algorithms to deal with networks such as large portions of the Western Electricity Coordinating Council (WECC) power grid.

Ray, C.; Huang, Z.

2007-01-01T23:59:59.000Z

46

COAL & POWER SYSTEMS  

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

COAL & POWER SYSTEMS COAL & POWER SYSTEMS STRATEGIC & MULTI-YEAR PROGRAM PLANS U.S. DEPARTMENT OF ENERGY * OFFICE OF FOSSIL ENERGY GREENER, SOONER... THROUGH TECHNOLOGY INTRODUCTION .......... i-1 STRATEGIC PLAN ........ 1-1 PROGRAM PLANS Vision 21 .......................... 2-1 Central Power Systems ...... 3-1 Distributed Generation ..... 4-1 Fuels ................................ 5-1 Carbon Sequestration ....... 6-1 Advanced Research ........... 7-1 TABLE OF CONTENTS STRATEGIC & MULTI-YEAR PROGRAM PLANS STRENGTH THROUGH SCIENCE... A "GREENER, SOONER" PHILOSOPHY Coal, natural gas, and oil fuel about 70 percent of the electricity generated in the United States. As promising as renewable and other alternative fuels are, it will be several decades before they can make significant energy contributions to the Nation's

47

Efficient Power System State Estimation  

E-Print Network [OSTI]

measure the data from the system components such as transmission line power flows, bus power injections monitoring of power systems. 2. Background Power systems have four main components: transmission, sub-transmission failure or generator outages. In the normal insecure state, a system may not be able to handle

Lavaei, Javad

48

PSO2004/FU5766 Improved wind power prediction  

E-Print Network [OSTI]

PSO2004/FU5766 Improved wind power prediction Optimal combined wind power forecasts using exogenous prediction can be accomplished. The application of combining wind power forecasts for certain wind power

49

High power connection system  

DOE Patents [OSTI]

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.

Schaefer, Christopher E. (Warren, OH); Beer, Robert C. (Noblesville, IN); McCall, Mark D. (Youngstown, OH)

2000-01-01T23:59:59.000Z

50

Improving the safety of LWR power plants. Final report  

SciTech Connect (OSTI)

This report documents the results of the Study to identify current, potential research issues and efforts for improving the safety of Light Water Reactor (LWR) power plants. This final report describes the work accomplished, the results obtained, the problem areas, and the recommended solutions. Specifically, for each of the issues identified in this report for improving the safety of LWR power plants, a description is provided in detail of the safety significance, the current status (including information sources, status of technical knowledge, problem solution and current activities), and the suggestions for further research and development. Further, the issues are ranked for action into high, medium, and low priority with respect to primarily (a) improved safety (e.g. potential reduction in public risk and occupational exposure), and secondly (b) reduction in safety-related costs (improving or maintaining level of safety with simpler systems or in a more cost-effective manner).

Not Available

1980-04-01T23:59:59.000Z

51

Solar powered desalination system  

E-Print Network [OSTI]

1.18: Largest PV Power Plants……………………………………………………32 TableTable 1.18: Largest PV Power Plants 19 Power (MW) LocationWorld Canada, Sarnia PV power plant Sarnia (Ontario) Italy,

Mateo, Tiffany Alisa

2011-01-01T23:59:59.000Z

52

Power Systems Development Facility  

SciTech Connect (OSTI)

This report discusses Test Campaign TC12 of the Kellogg Brown & Root, Inc. (KBR) Transport Gasifier train with a Siemens Westinghouse Power Corporation (SW) particle filter system at the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama. The Transport Gasifier is an advanced circulating fluidized-bed reactor designed to operate as either a combustor or a gasifier using a particulate control device (PCD). While operating as a gasifier, either air or oxygen can be used as the oxidant. Test run TC12 began on May 16, 2003, with the startup of the main air compressor and the lighting of the gasifier start-up burner. The Transport Gasifier operated until May 24, 2003, when a scheduled outage occurred to allow maintenance crews to install the fuel cell test unit and modify the gas clean-up system. On June 18, 2003, the test run resumed when operations relit the start-up burner, and testing continued until the scheduled end of the run on July 14, 2003. TC12 had a total of 733 hours using Powder River Basin (PRB) subbituminous coal. Over the course of the entire test run, gasifier temperatures varied between 1,675 and 1,850 F at pressures from 130 to 210 psig.

None

2003-07-01T23:59:59.000Z

53

Main Injector power distribution system  

SciTech Connect (OSTI)

The paper describes a new power distribution system for Fermilab's Main Injector. The system provides 13.8 kV power to Main Injector accelerator (accelerator and conventional loads) and is capable of providing power to the rest of the laboratory (backfeed system). Design criteria, and features including simulation results are given.

Cezary Jach and Daniel Wolff

2002-06-03T23:59:59.000Z

54

Wind for Schools Project Power System Brief, Wind Powering America...  

Wind Powering America (EERE)

Wind Powering America Fact Sheet Series Energy Efficiency & Renewable Energy Wind for Schools Project Power System Brief Wind for Schools Project Power System Brief Wind for...

55

Power Systems Development Facility  

SciTech Connect (OSTI)

This report discusses Test Campaign TC15 of the Kellogg Brown & Root, Inc. (KBR) Transport Gasifier train with a Siemens Power Generation, Inc. (SPG) particle filter system at the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama. The Transport Gasifier is an advanced circulating fluidized-bed reactor designed to operate as either a combustor or gasifier using a particulate control device (PCD). While operating as a gasifier, either air or oxygen can be used as the oxidant. Test run TC15 began on April 19, 2004, with the startup of the main air compressor and the lighting of the gasifier startup burner. The Transport Gasifier was shutdown on April 29, 2004, accumulating 200 hours of operation using Powder River Basin (PRB) subbituminous coal. About 91 hours of the test run occurred during oxygen-blown operations. Another 6 hours of the test run was in enriched-air mode. The remainder of the test run, approximately 103 hours, took place during air-blown operations. The highest operating temperature in the gasifier mixing zone mostly varied from 1,800 to 1,850 F. The gasifier exit pressure ran between 200 and 230 psig during air-blown operations and between 110 and 150 psig in oxygen-enhanced air operations.

Southern Company Services

2004-04-30T23:59:59.000Z

56

Fire alarm system improvement  

SciTech Connect (OSTI)

This document contains the Fire Alarm System Test Procedure for Building 234-5Z, 200-West Area on the Hanford Reservation, Richland, Washington. This Acceptance Test Procedure (ATP) has been prepared to demonstrate that the modifications to the Fire Protection systems function as required by project criteria. The ATP will test the Fire Alarm Control Panels, Flow Alarm Pressure Switch, Heat Detectors, Smoke Detectors, Flow Switches, Manual Pull Stations, and Gong/Door by Pass Switches.

Hodge, S.G.

1994-10-01T23:59:59.000Z

57

HOUSEHOLD SOLAR POWER SYSTEM.  

E-Print Network [OSTI]

?? Photovoltaic power has become one of the most popular research area in new energy field. In this report, the case of household solar power… (more)

Jiang, He

2014-01-01T23:59:59.000Z

58

Solar powered desalination system  

E-Print Network [OSTI]

As a clean energy source, solar power is inexhaustible,renewables for energy sources, including solar power. Also,Requirements Energy Source Natural Gas Nuclear Solar Wind

Mateo, Tiffany Alisa

2011-01-01T23:59:59.000Z

59

Heat and Power Systems Design  

E-Print Network [OSTI]

HEAT AND POWER SYSTEMS DESIGN H. D. Spriggs and J. V. Shah, Leesburg. VA ABSTRACT The selection of heat and power systems usually does not include a thorough analysis of the process heating. cooling and power requirements. In most cases..., these process requirements are accepted as specifications before heat and power systems are selected and designed. In t~is article we describe how Process Integration using Pinch Technology can be used to understand and achieve the minimum process heating...

Spriggs, H. D.; Shah, J. V.

60

Zero net power LED lighting system design  

Science Journals Connector (OSTI)

Although the natural circuitry for LED is DC, LED lighting system design has been restricted to match the supply requirements of AC power from the grid. The DC converter circuit on each LED light fitting is not only energy inefficient, it is also the most unreliable element in the lighting system. In a pilot research project to investigate the feasibility of DC lighting systems, an innovative approach has been taken to re-design the lighting circuit in DC mode using existing AC wiring. The intelligent control system manages power supply between a bank of batteries, solar power or grid power back up. The batteries are charged when solar power is available. Further improvement of the circuit control using pulse width modulation operation modes has been demonstrated. Experiments showed that the new LED lighting system was able to deliver 65% total energy reduction.

John P.T. Mo; Ganesh Sen

2013-01-01T23:59:59.000Z

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


61

Bulk Power System Dynamics and Control IV -Restructuring, August 24-28, Santorini, Greece. Improving Pacific Inter-tie Stability Using  

E-Print Network [OSTI]

, and C) Slatt TCSC (on the Slatt-Buckley 500 kV line); and 2) to design robust controls@eecs.wsu.edu Transmission Operations and Planning Bonneville Power Administration Vancouver, WA 98666-0491 Abstract voltage control needs for the stability support of COI lines in the Pacific Northwest system. The proposed

Venkatasubramanian, Mani V.

62

NREL: Water Power Research - Economic and Power System Modeling and  

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

Economic and Power System Modeling and Analysis Economic and Power System Modeling and Analysis NREL has a long history of successful research to understand and improve the cost of renewable energy technologies, their possible deployment scenarios, and the economic impacts of this deployment. As a research laboratory, NREL is a neutral third party and can provide an unbiased perspective of methodologies and approaches used to estimate direct and indirect economic impacts of offshore renewable energy projects. Deployment and Economic Impact NREL's economic analysis team is working to provide stakeholders with the tools necessary to understand potential deployment scenarios of water power technologies and the economic impacts of this deployment. The team is working to improve the representation of marine and

63

Body powered thermoelectric systems  

E-Print Network [OSTI]

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

Settaluri, Krishna Tej

2012-01-01T23:59:59.000Z

64

Securing Electrical Power System Operation  

Science Journals Connector (OSTI)

Automation in power systems has a very long tradition. Just recall the flyball governor in a steam engine and it becomes clear that power people have been using control principles and instruments for more th...

Petr Horacek PhD

2009-01-01T23:59:59.000Z

65

OIT geothermal system improvements  

SciTech Connect (OSTI)

Three geothermal wells drilled during the original campus construction vary from 396 m (1,300 ft) to 550 m (1,800 ft). These wells supply all of the heating and part of the cooling needs of the 11-building, 62,200 m{sup 2} (670,000 ft{sup 2}) campus. The combined capacity of the well pumps is 62 L/s(980 gpm) of 89{degrees}C (192{degrees}F) geothermal fluids. Swimming pool and domestic hot water heating impose a small but nearly constant year-round flow requirement. In addition to heating, a portion of the campus is also cooled using the geothermal resource. This is accomplished through the use of an absorption chiller. The chiller, which operates on the same principle as a gas refrigerator, requires a flow of 38 L/s (600 gpm) of geothermal fluid and produces 541 kW (154 tons) of cooling capacity (Rafferty, 1989). The annual operating costs for the system is about $35,000 including maintenance salary, equipment replacement and cost of pumping. This amounts to about $0.05 per square foot per year.

Lienau, P.J. [Geo-Heat Center, Klamath Falls, OR (United States)

1996-08-01T23:59:59.000Z

66

Tokamak power systems studies, FY 1985  

SciTech Connect (OSTI)

The Tokamak Power System Studies (TPSS) at ANL in FY-1985 were devoted to exploring innovative design concepts which have the potential for making substantial improvements in the tokamak as a commercial power reactor. Major objectives of this work included improved reactor economics, improved environmental and safety features, and the exploration of a wide range of reactor plant outputs with emphasis on reduced plant sizes compared to STARFIRE. The activities concentrated on three areas: plasma engineering, impurity control, and blanket/first wall/shield technology. 205 refs., 125 figs., 107 tabs.

Baker, C.C.; Brooks, J.N.; Ehst, D.A.; Smith, D.L.; Sze, D.K.

1985-12-01T23:59:59.000Z

67

Power Systems Engineering  

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

and distribution systems; steam, water, fuel, and environmental monitoring systems; alternative energy systems; reliability, availability, and maintainability assessments;...

68

Georgia Power - Energy Efficiency Home Improvement Rebates | Department of  

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

Georgia Power - Energy Efficiency Home Improvement Rebates Georgia Power - Energy Efficiency Home Improvement Rebates Georgia Power - Energy Efficiency Home Improvement Rebates < Back Eligibility Residential Savings Category Home Weatherization Commercial Weatherization Heating & Cooling Commercial Heating & Cooling Cooling Construction Design & Remodeling Sealing Your Home Ventilation Manufacturing Heat Pumps Appliances & Electronics Commercial Lighting Lighting Water Heating Maximum Rebate All Incentives: 50% of cost Whole House Improvements: $2,200 Individual Improvements: $700 Program Info Start Date 1/1/2011 Expiration Date 12/31/2012 State Georgia Program Type Utility Rebate Program Rebate Amount Programmable Thermostat: $100 BPI Assessment: $200 Whole House Improvements: 50% Air Sealing: $400 Attic Insulation: $300

69

Switching power pulse system  

DOE Patents [OSTI]

A switching system for delivering pulses of power from a source to a load using a storage capacitor charged through a rectifier, and maintained charged to a reference voltage level by a transistor switch and voltage comparator. A thyristor is triggered to discharge the storage capacitor through a saturable reactor and fractional turn saturable transformer having a secondary to primary turn ratio N of n:l/n = n[sup 2]. The saturable reactor functions as a soaker'' while the thyristor reaches saturation, and then switches to a low impedance state. The saturable transformer functions as a switching transformer with high impedance while a load coupling capacitor charges, and then switches to a low impedance state to dump the charge of the storage capacitor into the load through the coupling capacitor. The transformer is comprised of a multilayer core having two secondary windings tightly wound and connected in parallel to add their output voltage and reduce output inductance, and a number of single turn windings connected in parallel at nodes for the primary winding, each single turn winding linking a different one of the layers of the multilayer core. The load may be comprised of a resistive beampipe for a linear particle accelerator and capacitance of a pulse forming network. To hold off discharge of the capacitance until it is fully charged, a saturable core is provided around the resistive beampipe to isolate the beampipe from the capacitance until it is fully charged. 5 figs.

Aaland, K.

1983-08-09T23:59:59.000Z

70

Power System Electrician Construction  

Broader source: Energy.gov [DOE]

Join the Bonneville Power Administration (BPA) for a challenging and rewarding career, while working, living, and playing in the Pacific Northwest states (Washington, Oregon, Montana, Idaho). The...

71

Power System Electrician Maintenance  

Broader source: Energy.gov [DOE]

Join the Bonneville Power Administration (BPA) for a challenging and rewarding career, while working, living, and playing in the Pacific Northwest in Custer, Washington. Custer is a designated...

72

Center for Power Electronics Systems 2014 ANNUAL REPORT  

E-Print Network [OSTI]

Systems at Virginia Tech is a research center dedicated to improving electrical power pro- cessing- orative research and education for creating advanced electric power processing systems of the highestCenter for Power Electronics Systems 2014 ANNUAL REPORT VIRGINIA TECH · BLACKSBURG, VIRGINIA #12

Beex, A. A. "Louis"

73

Power System Operation with Large Penetrations of Wind Power  

Science Journals Connector (OSTI)

The characteristics of wind power result in unique challenges for system operators when integrating large penetrations of wind generation into power systems. This chapter discusses some of the power system ope...

Eleanor Denny

2013-01-01T23:59:59.000Z

74

Switching power pulse system  

DOE Patents [OSTI]

A switching system for delivering pulses of power from a source (10) to a load (20) using a storage capacitor (C3) charged through a rectifier (D1, D2), and maintained charged to a reference voltage level by a transistor switch (Q1) and voltage comparator (12). A thyristor (22) is triggered to discharge the storage capacitor through a saturable reactor (18) and fractional turn saturable transformer (16) having a secondary to primary turn ratio N of n:l/n=n.sup.2. The saturable reactor (18) functions as a "soaker" while the thyristor reaches saturation, and then switches to a low impedance state. The saturable transformer functions as a switching transformer with high impedance while a load coupling capacitor (C4) charges, and then switches to a low impedance state to dump the charge of the storage capacitor (C3) into the load through the coupling capacitor (C4). The transformer is comprised of a multilayer core (26) having two secondary windings (28, 30) tightly wound and connected in parallel to add their output voltage and reduce output inductance, and a number of single turn windings connected in parallel at nodes (32, 34) for the primary winding, each single turn winding linking a different one of the layers of the multilayer core. The load may be comprised of a resistive beampipe (40) for a linear particle accelerator and capacitance of a pulse forming network (42). To hold off discharge of the capacitance until it is fully charged, a saturable core (44) is provided around the resistive beampipe (40) to isolate the beampipe from the capacitance (42) until it is fully charged.

Aaland, Kristian (Livermore, CA)

1983-01-01T23:59:59.000Z

75

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...

76

Power System Electrician Maintenance  

Broader source: Energy.gov [DOE]

Join the Bonneville Power Administration (BPA) for a challenging and rewarding career, while working, living, and playing in the Pacific Northwest in The Dalles. Oregon. The Dalles is the county...

77

Power System Electrician Maintenance  

Broader source: Energy.gov [DOE]

Join the Bonneville Power Administration (BPA) for a challenging and rewarding career, while working, living, and playing in the Pacific Northwest in Lewiston, Idaho. Lewiston is a city in north...

78

Power System Electrician Maintenance  

Broader source: Energy.gov [DOE]

Join the Bonneville Power Administration (BPA) for a challenging and rewarding career, while working, living, and playing in the Pacific Northwest near Vancouver, Washington. Vancouver is a city on...

79

Power System Electrician Maintenance  

Broader source: Energy.gov [DOE]

Join the Bonneville Power Administration (BPA) for a challenging and rewarding career, while working, living, and playing in the Pacific Northwest near Kent, Washington, a city located in King...

80

Limits to power system growth  

SciTech Connect (OSTI)

In the design of space nuclear power systems a variety of conversion techniques may be used, each with its own advantages and disadvantages. A study was performed which analyzed over 120 proposed system designs. The designs were compared to identify the optimum conversion system as a function of power level and find limits to specific mass (kg/kWe) for each power cycle. Furthermore, the component masses were studied to determine which component of the overall design contributes the most to total system mass over a variety of power levels. The results can provide a focus for future research efforts by selecting the best conversion technology for the desired power range, and optimizing the system component which contributes most to the total mass.

Slater, S.M.; Klein, A.C. (Department of Nuclear Engineering, Oregon State University, Corvallis, Oregon 97331 (United States)); Webb, B.J. (Umpqua Research, Inc., P.O. Box 791, Myrtle Creek, Oregon 97457 (United States)); Pauley, K.A. (Battelle Pacific Northwest Laboratory, P.O. Box 999, Richland, Washington 99352 (United States))

1993-01-15T23:59:59.000Z

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


81

Ramp Forecasting Performance from Improved Short-Term Wind Power Forecasting: Preprint  

SciTech Connect (OSTI)

The variable and uncertain nature of wind generation presents a new concern to power system operators. One of the biggest concerns associated with integrating a large amount of wind power into the grid is the ability to handle large ramps in wind power output. Large ramps can significantly influence system economics and reliability, on which power system operators place primary emphasis. The Wind Forecasting Improvement Project (WFIP) was performed to improve wind power forecasts and determine the value of these improvements to grid operators. This paper evaluates the performance of improved short-term wind power ramp forecasting. The study is performed for the Electric Reliability Council of Texas (ERCOT) by comparing the experimental WFIP forecast to the current short-term wind power forecast (STWPF). Four types of significant wind power ramps are employed in the study; these are based on the power change magnitude, direction, and duration. The swinging door algorithm is adopted to extract ramp events from actual and forecasted wind power time series. The results show that the experimental short-term wind power forecasts improve the accuracy of the wind power ramp forecasting, especially during the summer.

Zhang, J.; Florita, A.; Hodge, B. M.; Freedman, J.

2014-05-01T23:59:59.000Z

82

An Improved Tissue Culture System  

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

Improved Improved Tissue Culture System for Embryogenic Callus Production and Plant Regeneration in Switchgrass (Panicum virgatum L.) Jason N. Burris & David G. J. Mann & Blake L. Joyce & C. Neal Stewart Jr. Published online: 10 October 2009 # Springer Science + Business Media, LLC. 2009 Abstract The increased emphasis on research of dedicated biomass and biofuel crops begs for biotechnology method improvements. For switchgrass (Panicum virgatum L.), one limitation is inefficient tissue culture and transformation systems. The objectives of this study were to investigate the utility of a new medium described here, LP9, for the production and maintenance of switchgrass callus and its regeneration, which also enables genetic transformation. LP9 medium is not based on Murashige and Skoog (MS) medium, the basal medium that all published switchgrass transformation has been

83

Tennessee, Pennsylvania: Porous Power Technologies Improves Lithium...  

Energy Savers [EERE]

while lowering costs and reducing impacts on the environment. Addthis Related Articles Johnson Controls Develops an Improved Vehicle Battery, Works to Cut Battery Costs in Half...

84

Reactive Power Compensating System.  

DOE Patents [OSTI]

The circuit was designed for the specific application of wind-driven induction generators. It has great potential for application in any situation where a varying reactive power load is present, such as with induction motors or generators, or for transmission network compensation.

Williams, Timothy J.; El-Sharkawi, Mohamed A.; Venkata, Subrahmanyam S.

1985-01-04T23:59:59.000Z

85

Reactive power compensating system  

DOE Patents [OSTI]

The reactive power of an induction machine is compensated by providing fixed capacitors on each phase line for the minimum compensation required, sensing the current on one line at the time its voltage crosses zero to determine the actual compensation required for each phase, and selecting switched capacitors on each line to provide the balance of the compensation required.

Williams, Timothy J. (Redondo Beach, CA); El-Sharkawi, Mohamed A. (Renton, WA); Venkata, Subrahmanyam S. (Seattle, WA)

1987-01-01T23:59:59.000Z

86

Improved System Integration for Integrated Gasification Combined Cycle (IGCC) Systems  

Science Journals Connector (OSTI)

Improved System Integration for Integrated Gasification Combined Cycle (IGCC) Systems ... The model is applied to evaluate integration schemes involving nitrogen injection, air extraction, and combinations of both, as well as different ASU pressure levels. ... The optimal nitrogen injection only case in combination with an elevated pressure ASU had the highest efficiency and power output and approximately the lowest emissions per unit output of all cases considered, and thus is a recommended design option. ...

H. Christopher Frey; Yunhua Zhu

2006-02-02T23:59:59.000Z

87

Superconductivity for electric power systems: Program overview  

SciTech Connect (OSTI)

Largely due to government and private industry partnerships, electric power applications based upon high-temperature superconductivity are now being designed and tested only seven years after the discovery of the high-temperature superconductors. These applications offer many benefits to the national electric system including: increased energy efficiency, reduced equipment size, reduced emissions, increased stability/reliability, deferred expansion, and flexible electricity dispatch/load management. All of these benefits have a common outcome: lower electricity costs and improved environmental quality. The U.S. Department of Energy (DOE) sponsors research and development through its Superconductivity Program for Electric Power Systems. This program will help develop the technology needed for U.S. industries to commercialize high-temperature superconductive electric power applications. DOE envisions that by 2010 the U.S. electric power systems equipment industry will regain a major share of the global market by offering superconducting products that outperform the competition.

Not Available

1995-02-01T23:59:59.000Z

88

The 2001 Power Plant Improvement Initiative  

Broader source: Energy.gov [DOE]

When U.S. consumers were confronted in 1999 and 2000 with blackouts and brownouts of electric power in major regions of the country, Congress responded by directing the Department of Energy to...

89

Solar powered desalination system  

E-Print Network [OSTI]

17 1.2.4 Reverse Osmosis…………………………………………………19 1.345 Chapter 2: Reverse Osmosis System…………………………………………………….46 2.1 Reverse Osmosis System Set Up…………………………………………….46 2.2

Mateo, Tiffany Alisa

2011-01-01T23:59:59.000Z

90

Power transaction issues in deregulated power systems  

E-Print Network [OSTI]

With the introduction of the deregulation in the power industry, it becomes possible to wheel power across the transmission network. Hence, some issues involving the network's physical capability to transfer power and the allocation of the network...

Roycourt, Henrik

2012-06-07T23:59:59.000Z

91

NETL: Coal and Power Systems  

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

Systems Systems Technologies Coal and Power Systems Advancing our Nation's Portfolio of Coal RD&D Technologies - Rotating Images Advancing our Nation's Portfolio of Coal RD&D Technologies - Read More! Focus of NETL RD&D RD&D efforts in coal and power systems fall into three categories: Technologies that enable existing coal power plants to cost-effectively meet environmental requirements. NETL and its research partners are developing environmental control technologies for retrofitting existing power plants, with application to new plants as well. Key areas of research include cost-effective control of mercury, nitrogen oxides, sulfur dioxide, and fine particulate emissions; beneficial uses for coal utilization byproducts; and innovations to minimize the impact of

92

The 2001 Power Plant Improvement Initiative | Department of Energy  

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

2001 Power Plant Improvement Initiative 2001 Power Plant Improvement Initiative The 2001 Power Plant Improvement Initiative When U.S. consumers were confronted in 1999 and 2000 with blackouts and brownouts of electric power in major regions of the country, Congress responded by directing the Department of Energy to issue "a general request for proposals for the commercial scale demonstration of technologies to assure the reliability of the nation's energy supply from existing and new electric generating facilities...." The Congress transferred $95 million from previously appropriated funding for the 1986-93 Clean Coal Technology Program. On February 6, 2001, the Energy Department issued a solicitation for proposals under the program it called the "Power Plant Improvement Initiative" (PPII). By the April 19, 2001, deadline, 24 candidate projects

93

Impacts of Improved Day-Ahead Wind Forecasts on Power Grid Operations: September 2011  

SciTech Connect (OSTI)

This study analyzed the potential benefits of improving the accuracy (reducing the error) of day-ahead wind forecasts on power system operations, assuming that wind forecasts were used for day ahead security constrained unit commitment.

Piwko, R.; Jordan, G.

2011-11-01T23:59:59.000Z

94

On improving performance and conserving power in cluster-based web servers  

E-Print Network [OSTI]

. Existing research separately addresses server performance and power conservation. The locality-aware request distribution (LARD) scheme improves the system response time by having the requests served by web servers which have the data in their cache...

Vageesan, Gopinath

2007-04-25T23:59:59.000Z

95

NSR and the Power Plant Improvement Initiative  

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

SOURCE REVIEW (NSR) and the CLEAN COAL SOURCE REVIEW (NSR) and the CLEAN COAL POWER INITIATIVE (CCPI) Summary Changes which result in increases in emissions of air pollutants from existing industrial facilities, such as power plants, can invoke stringent and costly new regulations. However, it is not the intent of such requirements to present a barrier to the installation of environmentally beneficial pollution control projects, or to projects demonstrating new methods to burn coal cleanly under the DOE Clean Coal Technology Program. Special provisions are included in the Clean Air Act and its implementing regulations to address potential exemptions of such projects from new source review regulations. This paper provides a general review of those provisions, and encourages project managers to

96

Integration of wind power in deregulated power systems.  

E-Print Network [OSTI]

??This thesis investigates the impact of integrating wind power into deregulated power systems. It includes a discussion of the history of deregulation and the development… (more)

Scorah, Hugh

2010-01-01T23:59:59.000Z

97

Power Systems Advanced Research  

SciTech Connect (OSTI)

In the 17 quarters of the project, we have accomplished the following milestones - first, construction of the three multiwavelength laser scattering machines for different light scattering study purposes; second, build up of simulation software package for simulation of field and laboratory particulates matters data; third, carried out field online test on exhaust from combustion engines with our laser scatter system. This report gives a summary of the results and achievements during the project's 16 quarters period. During the 16 quarters of this project, we constructed three multiwavelength scattering instruments for PM2.5 particulates. We build up a simulation software package that could automate the simulation of light scattering for different combinations of particulate matters. At the field test site with our partner, Alturdyne, Inc., we collected light scattering data for a small gas turbine engine. We also included the experimental data feedback function to the simulation software to match simulation with real field data. The PM scattering instruments developed in this project involve the development of some core hardware technologies, including fast gated CCD system, accurately triggered Passively Q-Switched diode pumped lasers, and multiwavelength beam combination system. To calibrate the scattering results for liquid samples, we also developed the calibration system which includes liquid PM generator and size sorting instrument, i.e. MOUDI. In this report, we give the concise summary report on each of these subsystems development results.

California Institute of Technology

2007-03-31T23:59:59.000Z

98

Novette pulse-power-system description  

SciTech Connect (OSTI)

This paper is a summary of the pulse power systems for Novette; the flashlamp power system, the pulsers for the various optical shutters and the pulse power control system.

Gritton, D.G.; Christie, D.J.; Holloway, R.W.; Merritt, B.T.; Oicles, J.A.; Whitham, K.; Wilcox, R.B.

1983-01-01T23:59:59.000Z

99

Improving Switching Performance of Power MOSFETs Used in High Rep-Rate, Short Pulse, High-Power Pulsers  

SciTech Connect (OSTI)

As their switching and power handling characteristics improve, solid-state devices are finding new applications in pulsed power. This is particularly true of applications that require fast trains of short duration pulses. High voltage (600-1200V) MOSFETs are especially well suited for use in these systems, as they can switch at significant peak power levels and are easily gated on and off very quickly. MOSFET operation at the shortest pulse durations is not constrained by the intrinsic capabilities of the MOSFET, but rather by the capabilities of the gate drive circuit and the system physical layout. This project sought to improve MOSFET operation in a pulsed power context by addressing these issues. The primary goal of this project is to improve the switching performance of power MOSFETs for use in high rep-rate, short pulse, high-power applications by improving the design of the gate drive circuits and the circuit layouts used in these systems. This requires evaluation of new commercial gate drive circuits and upgrading the designs of LLNL-developed circuits. In addition, these circuits must be tested with the fastest available high-voltage power MOSFETs.

Cook, E G

2006-09-19T23:59:59.000Z

100

Improving heat capture for power generation in coal gasification plants  

E-Print Network [OSTI]

Improving the steam cycle design to maximize power generation is demonstrated using pinch analysis targeting techniques. Previous work models the steam pressure level in composite curves based on its saturation temperature ...

Botros, Barbara Brenda

2011-01-01T23:59:59.000Z

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


101

Solar-powered cooling system  

DOE Patents [OSTI]

A solar-powered adsorption-desorption refrigeration and air conditioning system uses nanostructural materials made of high specific surface area adsorption aerogel as the adsorptive media. Refrigerant molecules are adsorbed on the high surface area of the nanostructural material. A circulation system circulates refrigerant from the nanostructural material to a cooling unit.

Farmer, Joseph C

2013-12-24T23:59:59.000Z

102

Georgia Interfaith Power and Light - Energy Improvement Grants (Georgia) |  

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

Georgia Interfaith Power and Light - Energy Improvement Grants Georgia Interfaith Power and Light - Energy Improvement Grants (Georgia) Georgia Interfaith Power and Light - Energy Improvement Grants (Georgia) < Back Eligibility Institutional Nonprofit Schools Savings Category Heating & Cooling Commercial Heating & Cooling Heating Home Weatherization Commercial Weatherization Sealing Your Home Cooling Construction Design & Remodeling Other Windows, Doors, & Skylights Ventilation Manufacturing Heat Pumps Appliances & Electronics Commercial Lighting Lighting Water Heating Solar Program Info Funding Source The Kendeda Fund State Georgia Program Type Non-Profit Grant Program Provider Georgia Interfaith Power and Light Georgia Interfaith Power and Light (GIPL) offers grants of up to $10,000 to congregations or faith-based communities, including faith-based schools.

103

Improvement of isentropic efficiency of a magnetohydrodynamic power generator by radio-frequency preionization  

Science Journals Connector (OSTI)

We describe the effect of a radio-frequency (rf) power application on the performance of a magnetohydrodynamic(MHD) electrical power generator as determined through shock-tunnel-based experiments and quasi-three-dimensional numerical simulations. The temporal plasma-fluid behavior the one-dimensional plasma-fluid structure the enthalpy-entropy diagram the quality of the energy conversion efficiency and the energy flow in the power-generating system are investigated. Preionization assistance by a small amount of rf power drastically changes the entire MHD power-generating system; the MHD extraction length is considerably extended and the isentropic efficiency is significantly improved.

Tomoyuki Murakami; Yoshihiro Okuno

2009-01-01T23:59:59.000Z

104

Sandia National Laboratories: power flow control system  

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

power flow control system ECIS-Princeton Power Systems, Inc.: Demand Response Inverter On March 19, 2013, in DETL, Distribution Grid Integration, Energy, Energy Surety, Facilities,...

105

Thermoelectric Power Generation System with Loop Thermosyphon...  

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

Power Generation System with Loop Thermosyphon in Future High Efficiency Hybrid Vehicles Thermoelectric Power Generation System with Loop Thermosyphon in Future High Efficiency...

106

Sathian Sun Power Systems | Open Energy Information  

Open Energy Info (EERE)

Sathian Sun Power Systems Jump to: navigation, search Name: Sathian Sun Power Systems Place: Salem, Andhra Pradesh, India Sector: Solar Product: Manufacturer of solar street lights...

107

Power Electronic Thermal System Performance and Integration ...  

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

Power Electronic Thermal System Performance and Integration Power Electronic Thermal System Performance and Integration 2009 DOE Hydrogen Program and Vehicle Technologies Program...

108

A new hybrid pneumatic combustion engine to improve fuel consumption of wind–Diesel power system for non-interconnected areas  

Science Journals Connector (OSTI)

This paper presents an evaluation of an optimized Hybrid Pneumatic-Combustion Engine (HPCE) concept that permits reducing fuel consumption for electricity production in non-interconnected remote areas, originally equipped with hybrid Wind–Diesel System (WDS). Up to now, most of the studies on the pneumatic hybridization of Internal Combustion Engines (ICE) have dealt with two-stroke pure pneumatic mode. The few studies that have dealt with hybrid pneumatic-combustion four-stroke mode require adding a supplementary valve to charge compressed air in the combustion chamber. This modification means that a new cylinder head should be fabricated. Moreover, those studies focus on spark ignition engines and are not yet validated for Diesel engines. Present HPCE is capable of making a Diesel engine operate under two-stroke pneumatic motor mode, two-stroke pneumatic pump mode and four-stroke hybrid mode, without needing an additional valve in the combustion chamber. This fact constitutes this study’s strength and innovation. The evaluation of the concept is based on ideal thermodynamic cycle modeling. The optimized valve actuation timings for all modes lead to generic maps that are independent of the engine size. The fuel economy is calculated for a known site during a whole year, function of the air storage volume and the wind power penetration rate.

Tammam Basbous; Rafic Younes; Adrian Ilinca; Jean Perron

2012-01-01T23:59:59.000Z

109

Preventing power outages Power system contingency analysis on the GPU  

E-Print Network [OSTI]

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

Vuik, Kees

110

Models for multimegawatt space power systems  

SciTech Connect (OSTI)

This report describes models for multimegawatt, space power systems which Sandia's Advanced Power Systems Division has constructed to help evaluate space power systems for SDI's Space Power Office. Five system models and models for associated components are presented for both open (power system waste products are exhausted into space) and closed (no waste products) systems: open, burst mode, hydrogen cooled nuclear reactor -- turboalternator system; open, hydrogen-oxygen combustion turboalternator system; closed, nuclear reactor powered Brayton cycle system; closed, liquid metal Rankine cycle system; and closed, in-core, reactor therminonic system. The models estimate performance and mass for the components in each of these systems. 17 refs., 8 figs., 15 tabs.

Edenburn, M.W.

1990-06-01T23:59:59.000Z

111

ENERGY STORAGE SYSTEM REQUIREMENTS FOR SHIPBOARD POWER SYSTEMS SUPPLYING PULSED POWER LOADS.  

E-Print Network [OSTI]

??Energy storage systems will likely be needed for future shipboard power systems that supply loads with high power variability such as pulsed power loads. The… (more)

Duvoor, Prashanth

2008-01-01T23:59:59.000Z

112

ADVANCED POWER SYSTEMS ASH BEHAVIOR IN POWER SYSTEMS  

SciTech Connect (OSTI)

The overall goal of this initiative is to develop fundamental knowledge of ash behavior in power systems for the purpose of increasing power production efficiency, reducing operation and maintenance costs, and reducing greenhouse gas emissions into the atmosphere. The specific objectives of this initiative focus primarily on ash behavior related to advanced power systems and include the following: ? Determine the current status of the fundamental ash interactions and deposition formation mechanisms as already reported through previous or ongoing projects at the EERC or in the literature. ? Determine sintering mechanisms for temperatures and particle compositions that are less well known and remain for the most part undetermined. ? Identify the relationship between the temperature of critical viscosity (Tcv ) as measured in a viscometer and the crystallization occurring in the melt. ? Perform a literature search on the use of heated-stage microscopy (HSM) for examining in situ ash-sintering phenomena and then validate the use of HSM in the determination of viscosity in spherical ash particles. ? Ascertain the formation and stability of specific mineral or amorphous phases in deposits typical of advanced power systems. ? Evaluate corrosion for alloys being used in supercritical combustion systems.

CHRISTOPHER J. ZYGARLICKE; DONALD P. MCCOLLOR; JOHN P. KAY; MICHAEL L. SWANSON

1998-09-01T23:59:59.000Z

113

Transformer modeling in power systems  

SciTech Connect (OSTI)

A practical and accurate method of modeling various transformers in power systems using a general circuit model approach is described in this paper. The advantage of the new approach is that it can model transformers along with a complex circuit network, while avoiding the use of symmetrical components, unlike other approaches. The transformer modeling technique introduced in this paper is very useful to accurately determine fault current distribution in a power system and electromagnetic interference on pipelines and communication lines installed in a right-of-way consisting of transmission lines operating at different voltages.

Ma, J.; Dawalibi, F.P. [Safe Engineering Services and Technologies Ltd., Montreal, Quebec (Canada)

1999-11-01T23:59:59.000Z

114

A novel power block for CSP systems  

SciTech Connect (OSTI)

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

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

2010-10-15T23:59:59.000Z

115

2002CALIFORNIAPOWERMIX 2002 NET SYSTEM POWER CALCULATION  

E-Print Network [OSTI]

Power Mix Fuel Type Net System Power Coal 15% Large Hydroelectric 23% Natural Gas 42% Nuclear 11CALIFORNIA ENERGY COMMISSION APRIL 2003 300-03-002 2002CALIFORNIAPOWERMIX 2002 NET SYSTEM POWER and report net system power, annually (Senate Bill 1305, Sher, Chapter 796, statue of 1997)1 . Net system

116

Career Map: Power Systems/Transmission Engineer  

Broader source: Energy.gov [DOE]

The Wind Program's Career Map provides job description information for Power Systems and Transmission Engineer positions.

117

Multilevel Converter Topologies for Utility Scale Solar Photovoltaic Power Systems  

E-Print Network [OSTI]

and phase angle of the inverter cells is proposed. This improves differential power processing amongst cells while keeping the voltage and current ratings of the devices low. A battery energy storage system for the multilevel PV converter has also been...

Essakiappan, Somasundaram

2014-04-30T23:59:59.000Z

118

Power System Load Forecasting Based on EEMD and ANN  

Science Journals Connector (OSTI)

In order to fully mine the characteristics of load data and improve the accuracy of power system load forecasting, a load forecasting model based on Ensemble Empirical Mode ... is proposed in this paper. Firstly,...

Wanlu Sun; Zhigang Liu; Wenfan Li

2011-01-01T23:59:59.000Z

119

Solar energy power generation system  

SciTech Connect (OSTI)

A solar energy power generation system is described which consists of: (a) means for collecting and concentrating solar energy; (b) heat storage means; (c) Stirling engine means for producing power; (d) first heat transfer means for receiving the concentrated solar energy and for transferring heat to the heat storage means; and (e) second heat transfer means for controllably transferring heat from the storage means to the Stirling engine means and including a discharge heat pipe means for transferring heat to the Stirling engine means and further including means for inserting and withdrawing the discharge heat pipe means into and out of the heat storage means.

Nilsson, J.E.; Cochran, C.D.

1986-05-06T23:59:59.000Z

120

Distributed Power Electronics for PV Systems (Presentation)  

SciTech Connect (OSTI)

An overview of the benefits and applications of microinverters and DC power optimizers in residential systems. Some conclusions from this report are: (1) The impact of shade is greater than just the area of shade; (2) Additional mismatch losses include panel orientation, panel distribution, inverter voltage window, soiling; (3) Per-module devices can help increase performance, 4-12% or more depending on the system; (4) Value-added benefits (safety, monitoring, reduced design constraints) are helping their adoption; and (5) The residential market is growing rapidly. Efficiency increases, cost reductions are improving market acceptance. Panel integration will further reduce price and installation cost. Reliability remains an unknown.

Deline, C.

2011-12-01T23:59:59.000Z

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


121

POWER SYSTEMS STABILITY WITH LARGE-SCALE WIND POWER PENETRATION  

E-Print Network [OSTI]

of offshore wind farms, wind power fluctuations may introduce several challenges to reliable power system behaviour due to natural wind fluctuations. The rapid power fluctuations from the large scale wind farms Generation Control (AGC) system which includes large- scale wind farms for long-term stability simulation

Bak-Jensen, Birgitte

122

Intelligent wind power prediction systems final report  

E-Print Network [OSTI]

Intelligent wind power prediction systems ­ final report ­ Henrik Aalborg Nielsen (han (FU 4101) Ens. journal number: 79029-0001 Project title: Intelligent wind power prediction systems #12;#12;Intelligent wind power prediction systems 1/36 Contents 1 Introduction 6 2 The Wind Power Prediction Tool 7 3

123

Sandia National Laboratories: Concentrating Solar Power Systems  

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

Power Systems Air Force Research Laboratory Testing On November 2, 2012, in Concentrating Solar Power, Facilities, National Solar Thermal Test Facility, News, News & Events,...

124

Installation of PV systems in Greece—Reliability improvement in the transmission and distribution system  

Science Journals Connector (OSTI)

Photovoltaic (PV) power systems are becoming one of the most developing investment areas in the field of Renewable Energy Sources (RES). A statement of the status quo of PV power systems in Greece, and their contribution towards the improvement of power system reliability, is the scope of the present paper. Siting and installation of PV power systems is performed according to a recent Greek law, along with environmental and geographical constraints. Meteorological data are computed, formulated and imported to appropriate software in order to simulate the PV units and generate their power output. Data for unserved loads, resulting from load shedding during peak hours, are compared to the above estimated power production. Assuming that a proportion of the eventually unsupplied power could be provided by the accessed power generation of the PV units, the reliability of both transmission and distribution system is improved. The impact on the transmission system is shown by an improvement of LOLP and LOEP indices, whereas peak shaving for the Interconnected Greek Transmission System (IGTS) is also illustrated. For the distribution system the impact is quantified using the distribution system reliability indices SAIDI, SAIFI, and CAIDI. Finally, the resulting improvement is also expressed in financial terms.

Aggelos S. Bouhouras; Antonios G. Marinopoulos; Dimitris P. Labridis; Petros S. Dokopoulos

2010-01-01T23:59:59.000Z

125

Active power regulation of wind power systems through demand response  

Science Journals Connector (OSTI)

With the specific characteristics of low-carbon intensity and economy, wind power has been widely promoted around the world. Due to the variable and intermittent nature of wind power production, the system has to...

WeiWei Miao; HongJie Jia; Dan Wang; Simon Parkinson…

2012-06-01T23:59:59.000Z

126

Synergetic Power Systems | Open Energy Information  

Open Energy Info (EERE)

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

127

Flex power perspectives of indirect power system control through dynamic  

Open Energy Info (EERE)

Flex power perspectives of indirect power system control through dynamic Flex 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 power system control through dynamic power price Country Denmark Coordinates 56.26392°, 9.501785° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":56.26392,"lon":9.501785,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

128

System and method for advanced power management  

DOE Patents [OSTI]

A power management system is provided that includes a power supply means comprising a plurality of power supply strings, a testing means operably connected to said plurality of power supply strings for evaluating performance characteristics of said plurality of power supply strings, and a control means for monitoring power requirements and comprising a switching means for controlling switching of said plurality of power supply strings to said testing means.

Atcitty, Stanley (Albuquerque, NM); Symons, Philip C. (Surprise, AZ); Butler, Paul C. (Albuquerque, NM); Corey, Garth P. (Albuquerque, NM)

2009-07-28T23:59:59.000Z

129

DYNAMIC MODELLING OF AUTONOMOUS POWER SYSTEMS INCLUDING RENEWABLE POWER SOURCES.  

E-Print Network [OSTI]

(thermal, gas, diesel) and renewable (hydro, wind) power units. The objective is to assess the impact - that have a special dynamic behaviour, and the wind turbines. Detailed models for each one of the power system components are developed. Emphasis is given in the representation of different hydro power plant

Paris-Sud XI, Université de

130

Direct conversion nuclear reactor space power systems  

SciTech Connect (OSTI)

This paper presents the results of a study of space nuclear reactor power systems using either thermoelectric or thermionic energy converters. An in-core reactor design and two heat pipe cooled out-of-core reactor designs were considered. One of the out-of-core cases utilized, long heat pipes (LHP) directly coupled to the energy converter. The second utilized a larger number of smaller heat pipes (mini-pipe) radiatively coupled to the energy converter. In all cases the entire system, including power conditioning, was constrained to be launched in a single shuttle flight. Assuming presently available performance, both the LHP thermoelectric system and minipipe thermionic system, designed to produce 100 kWe for seven years, would have a specific mass near 22kg/kWe. The specific mass of the thermionic minipipe system designed for a one year mission is 165 kg/kWe due to less fuel swelling. Shuttle imposed growth limits are near 300 kWe and 1.2 MWe for the thermoelectric and thermionic systems, respectively. Converter performance improvements could double this potential, and over 10 MWe may be possible for very short missions.

Britt, E.J.; Fitzpatrick, G.O.

1982-08-01T23:59:59.000Z

131

Wind Power System Simulation of Switch Control  

Science Journals Connector (OSTI)

In order to find a balance between energy efficiency and reliability of wind power generation system, this paper presents a ... switch control strategy. This paper establishes a wind power system simulation model...

Yuehua Huang; Guangxu Li; Huanhuan Li

2014-01-01T23:59:59.000Z

132

Wind Speed Forecasting for Power System Operation  

E-Print Network [OSTI]

In order to support large-scale integration of wind power into current electric energy system, accurate wind speed forecasting is essential, because the high variation and limited predictability of wind pose profound challenges to the power system...

Zhu, Xinxin

2013-07-22T23:59:59.000Z

133

Ionic Power Systems Ltd | Open Energy Information  

Open Energy Info (EERE)

Ionic Power Systems Ltd Ionic Power Systems Ltd Jump to: navigation, search Name Ionic Power Systems Ltd. Place San Diego, California Zip 92126 Product Ionix Power Systems, Ltd. is a developer of new and innovative products and tools designed to aid in the development of next-generation energy technologies such as batteries, fuel cells, and advanced capacitors. References Ionic Power Systems Ltd.[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Ionic Power Systems Ltd. is a company located in San Diego, California . References ↑ "Ionic Power Systems Ltd." Retrieved from "http://en.openei.org/w/index.php?title=Ionic_Power_Systems_Ltd&oldid=347099" Categories:

134

Power Systems Integration Laboratory (Fact Sheet)  

SciTech Connect (OSTI)

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

Not Available

2011-10-01T23:59:59.000Z

135

A Preliminary Study on Designing Combined Heat and Power (CHP) System for the University Environment  

E-Print Network [OSTI]

Combined heat and power (CHP) systems are an evolving technology that is at the front of the energy conservation movement. With the reduction in energy consumption and green house gas emissions, CHP systems are improving the efficiency of power...

Kozman, T. A.; Reynolds, C. M.; Lee, J.

2008-01-01T23:59:59.000Z

136

2007 NET SYSTEM POWER REPORT STAFFREPORT  

E-Print Network [OSTI]

-2007.......................................................................5 Figure 3: Natural Gas and Coal Shares of Net System Power Mix Become Larger 1999-2007.....7 ListCALIFORNIA ENERGY COMMISSION 2007 NET SYSTEM POWER REPORT STAFFREPORT April 2008 CEC-200 .................................................................................................................. 1 Net System Power Findings

137

Towards Holistic Power Tower System Optimization  

Science Journals Connector (OSTI)

Abstract Many stakeholders today consider power tower systems to be the most promising CSP technology for the future. Therefore much effort is spent to improve individual components and subsystems. While these are valuable steps towards cost reduction, it is also of great importance to perform an overall, i.e. ‘holistic’, system layout and optimization process. Still, even today heliostats are often characterized and even compared using the single parameter ‘cost per square meter’, which is not sufficient. More factors like optical and tracking accuracy, shape, structural deformation under operation loads and maybe even power consumption have to be factored in to allow for a meaningful comparison. In the paper recent activities targeting at a more holistic power tower system optimization are described. For the overall layout process of heliostat field, tower and receiver the complete system is modeled using SAM or an in-house tool based on SolTrace and Matlab to determine investment cost, annual electricity generation and resulting levelised electricity costs. By doing so, different heliostat types and field layouts can be directly compared using \\{LCoE\\} as a reasonable figure of merit. This logical approach to identify the optimum heliostat design is described and illustrated using two generic heliostat designs and the respective field layouts as an example; a recently developed updated tower cost curve is used. It is found that using specific heliostat costs (i.e. $/m2) alone as a figure of merit to assess different heliostat designs can be misleading, because heliostats characterized by lower specific investment costs, but also lower optical and tracking accuracy, can lead to higher levelised electricity costs, which means the real objective of power plant optimization is not reached by looking at heliostat costs per square meter alone.

G. Weinrebe; F. von Reeken; M. Wöhrbach; T. Plaz; V. Göcke; M. Balz

2014-01-01T23:59:59.000Z

138

Spin-on-doping for output power improvement of silicon nanowire array based thermoelectric power generators  

SciTech Connect (OSTI)

The output power of a silicon nanowire array (NWA)-bulk thermoelectric power generator (TEG) with Cu contacts is improved by spin-on-doping (SOD). The Si NWAs used in this work are fabricated via metal assisted chemical etching (MACE) of 0.01–0.02 ? cm resistivity n- and p-type bulk, converting ?4% of the bulk thickness into NWs. The MACE process is adapted to ensure crystalline NWs. Current-voltage and Seebeck voltage-temperature measurements show that while SOD mainly influences the contact resistance in bulk, it influences both contact resistance and power factor in NWA-bulk based TEGs. According to our experiments, using Si NWAs in combination with SOD increases the output power by an order of 3 under the same heating power due to an increased power factor, decreased thermal conductivity of the NWA and reduced Si-Cu contact resistance.

Xu, B., E-mail: bin.xu09@imperial.ac.uk; Fobelets, K. [Department of Electrical and Electronic Engineering, Imperial College London, Exhibition Road, SW7 2BT London (United Kingdom)

2014-06-07T23:59:59.000Z

139

New Horizons Mission Powered by Space Radioisotope Power Systems |  

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

New Horizons Mission Powered by Space Radioisotope Power Systems 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 of the New Horizons spacecraft during its planned encounter with Pluto and its moon, Charon. The craft's miniature cameras, radio science experiment, ultraviolet and infrared spectrometers and space plasma experiments are run by the Department of Energy's Radioisotope Thermoelectric Generator (RTG). | Photo courtesy of Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute (JHUAPL/SwRI) Artist's concept of the New Horizons spacecraft during its planned encounter with Pluto and its moon, Charon. The craft's miniature cameras, radio science experiment, ultraviolet and infrared spectrometers and space

140

Electricity for road transport, flexible power systems and wind power  

Open Energy Info (EERE)

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

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


141

New Horizons Mission Powered by Space Radioisotope Power Systems |  

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

New Horizons Mission Powered by Space Radioisotope Power Systems 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 of the New Horizons spacecraft during its planned encounter with Pluto and its moon, Charon. The craft's miniature cameras, radio science experiment, ultraviolet and infrared spectrometers and space plasma experiments are run by the Department of Energy's Radioisotope Thermoelectric Generator (RTG). | Photo courtesy of Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute (JHUAPL/SwRI) Artist's concept of the New Horizons spacecraft during its planned encounter with Pluto and its moon, Charon. The craft's miniature cameras, radio science experiment, ultraviolet and infrared spectrometers and space

142

Improving Compressed Air System Efficiency- Know What You Really Need  

E-Print Network [OSTI]

demand-side management (DSM) programs as well as their own efforts, Wisconsin Power and Light customers have been able to improve compressed air system efficiency over the past few years. One customer reduced compressed air operating costs by one third...

Terrell, R. E.

143

Materials in space nuclear power systems  

SciTech Connect (OSTI)

Man's presence in space has been limited by the availability of reliable lightweight sources of power. Over the course of the last 30 years, a variety of space nuclear power systems have been designed and, in some cases, built and flown. Although a number of technology issues effect the overall performance of these systems, technical issues associated with the materials of construction have most often been a major limitation in obtaining the desired system performance goals. This paper will review selected materials limitations associated with the three major nuclear power systems being considered at this time: radioisotope power, nuclear power, and nuclear propulsion systems.

Cooper, R.H.; Moore, J.P.

1991-01-01T23:59:59.000Z

144

EMERY BIOMASS GASIFICATION POWER SYSTEM  

SciTech Connect (OSTI)

Emery Recycling Corporation (now Emery Energy Company, LLC) evaluated the technical and economical feasibility of the Emery Biomass Gasification Power System (EBGPS). The gasifier technology is owned and being developed by Emery. The Emery Gasifier for this project was an oxygen-blown, pressurized, non-slagging gasification process that novelly integrates both fixed-bed and entrained-flow gasification processes into a single vessel. This unique internal geometry of the gasifier vessel will allow for tar and oil destruction within the gasifier. Additionally, the use of novel syngas cleaning processes using sorbents is proposed with the potential to displace traditional amine-based and other syngas cleaning processes. The work scope within this project included: one-dimensional gasifier modeling, overall plant process modeling (ASPEN), feedstock assessment, additional analyses on the proposed syngas cleaning process, plant cost estimating, and, market analysis to determine overall feasibility and applicability of the technology for further development and commercial deployment opportunities. Additionally, the project included the development of a detailed technology development roadmap necessary to commercialize the Emery Gasification technology. Process modeling was used to evaluate both combined cycle and solid oxide fuel cell power configurations. Ten (10) cases were evaluated in an ASPEN model wherein nine (9) cases were IGCC configurations with fuel-to-electricity efficiencies ranging from 38-42% and one (1) case was an IGFC solid oxide case where 53.5% overall plant efficiency was projected. The cost of electricity was determined to be very competitive at scales from 35-71 MWe. Market analysis of feedstock availability showed numerous market opportunities for commercial deployment of the technology with modular capabilities for various plant sizes based on feedstock availability and power demand.

Benjamin Phillips; Scott Hassett; Harry Gatley

2002-11-27T23:59:59.000Z

145

Space Power Systems | Department of Energy  

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

Reactor Technologies » Space Power Systems Reactor Technologies » Space Power Systems Space Power Systems Through a strong partnership between the Energy Department's office of Nuclear Energy and NASA, Radioisotope Power Systems have been providing the energy for deep space exploration. Through a strong partnership between the Energy Department's office of Nuclear Energy and NASA, Radioisotope Power Systems have been providing the energy for deep space exploration. The Department of Energy (DOE) and its predecessors have provided radioisotope power systems that have safely enabled deep space exploration and national security missions for five decades. Radioisotope power systems (RPSs) convert the heat from the decay of the radioactive isotope plutonium-238 (Pu-238) into electricity. RPSs are capable of producing heat and electricity under the harsh conditions

146

Monolithic Power Systems | Open Energy Information  

Open Energy Info (EERE)

Monolithic Power Systems Monolithic Power Systems Jump to: navigation, search Name Monolithic Power Systems Place San Jose, California Zip 95120 Product A California-based analog semiconductor company. References Monolithic Power Systems[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Monolithic Power Systems is a company located in San Jose, California . References ↑ "Monolithic Power Systems" Retrieved from "http://en.openei.org/w/index.php?title=Monolithic_Power_Systems&oldid=348915" Categories: Clean Energy Organizations Companies Organizations Stubs What links here Related changes Special pages Printable version Permanent link Browse properties About us Disclaimers

147

PowerGenix Systems | Open Energy Information  

Open Energy Info (EERE)

PowerGenix Systems PowerGenix Systems Jump to: navigation, search Name PowerGenix Systems Place San Diego, California Zip 92131-1109 Product Develops high-discharge nickel-zinc rechargeable batteries. References PowerGenix Systems[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. PowerGenix Systems is a company located in San Diego, California . References ↑ "PowerGenix Systems" Retrieved from "http://en.openei.org/w/index.php?title=PowerGenix_Systems&oldid=349892" Categories: Clean Energy Organizations Companies Organizations Stubs What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load) Error 429 Throttled (bot load)

148

Improved Structure and Fabrication of Large, High-Power KHPS Rotors - Final Scientific/Technical Report  

SciTech Connect (OSTI)

Verdant Power, Inc, working in partnership with the National Renewable Energy Laboratory (NREL), Sandia National Laboratories (SNL), and the University of Minnesota St. Anthony Falls Laboratory (SAFL), among other partners, used evolving Computational Fluid Dynamics (CFD) and Finite Element Analysis (FEA) models and techniques to improve the structure and fabrication of large, high-power composite Kinetic Hydropower System (KHPS) rotor blades. The objectives of the project were to: design; analyze; develop for manufacture and fabricate; and thoroughly test, in the lab and at full scale in the water, the improved KHPS rotor blade.

Corren, Dean [Verdant Power, Inc.; Colby, Jonathan [Verdant Power, Inc.; Adonizio, Mary Ann [Verdant Power, Inc.

2013-01-29T23:59:59.000Z

149

Electric Power System Asset Optimization  

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

NETL-430/061110 NETL-430/061110 March 7, 2011 430.01.03 Electric Power System Asset Optimization Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or

150

Integrated Retail & Wholesale Power System Operation  

E-Print Network [OSTI]

(open-source release): AMES Wholesale Power Market Testbed (ISU) + GridLAB-D distribution platform (DOE in Wholesale Power Markets: Experimental Findings Using an Agent-Based Testbed", invited talk for the Institute of Retail and Wholesale Power System Operations", Agent Technologies for Energy Systems (ATES) Workshop

Tesfatsion, Leigh

151

Accelerating the transformation of power systems  

E-Print Network [OSTI]

Accelerating the transformation of power systems Ancillary Services Peer Exchange with India- to-peer consultation. The 21st Century Power Partnership aims to accelerate the global transformation consultative support Accelerating the transformation of power systems NREL/FS-6A20-61811 · May 2014 15013

152

On methodology for modelling wind power impact on power systems  

Science Journals Connector (OSTI)

There is a continuous discussion going on concerning the integration cost of wind power. The integration cost can, for example, be defined as the extra costs in the rest of the system when wind power is introduced, compared with the situation without wind power. The result of the studies depends on both parameters and the method used. The aim of this paper is to structure the methods in order to get some understanding on the impact of different modelling approaches. In general, it can be noted that approximations are always needed since the integration of wind power includes so many complexities including stability of power systems, grid codes, market behaviour, uncertainties and trading possibilities. All these items have to be considered in both the wind power case and in the reference case to obtain an estimation of the integration cost.

Lennart Soder; Hannele Holttinen

2008-01-01T23:59:59.000Z

153

Improving pumping system efficiency at coal plants  

SciTech Connect (OSTI)

The industry must employ ultramodern technologies when building or upgrading power plant pumping systems thereby using fuels more efficiently. The article discusses the uses and efficiencies of positive displacement pumps, centrifugal pumps and multiple screw pumps. 1 ref., 4 figs.

Livoti, W.C.; McCandless, S.; Poltorak, R. [Baldor Electric Co. (United States)

2009-03-15T23:59:59.000Z

154

Nova power systems: status and operating experience  

SciTech Connect (OSTI)

This paper describes the pulse power systems that are used in these lasers; the status and the operating experiences. The pulsed power system for the Nova Laser is comprised of several distinct technology areas. The large capacitor banks for driving flashlamps that excite the laser glass is one area, the fast pulsers that drive pockels cell shutters is another area, and the contol system for the pulsed power is a third. This paper discusses the capacitor banks and control systems.

Whitham, K.; Merritt, B.T.; Gritton, D.G.; Smart, A.J.; Holloway, R.W.; Oicles, J.A.

1983-11-28T23:59:59.000Z

155

Microcomputer Applications in Power System Substation Automation  

Science Journals Connector (OSTI)

The object of this chapter is to describe power system applications of microcomputers, particularly in the area of power substation automation.The major functions required in substation automation are reviewed an...

C. T. Nguyen; R. Grondin; A. St-Jacques…

1983-01-01T23:59:59.000Z

156

Power system with an integrated lubrication circuit  

DOE Patents [OSTI]

A power system includes an engine having a first lubrication circuit and at least one auxiliary power unit having a second lubrication circuit. The first lubrication circuit is in fluid communication with the second lubrication circuit.

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

2009-11-10T23:59:59.000Z

157

Comprehensive Simulation Framework for Power System Operation  

Science Journals Connector (OSTI)

The Electric Power and Communication Synchronizing Simulator (EPOCHS) [13, 14...] has been the first approach to combine simulators for power system and communication networks. Here, the authors connected the two...

Sven Christian Müller; Hanno Georg…

2014-01-01T23:59:59.000Z

158

Land Record System PIA, Bonneville Power Administration | Department...  

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

Land Record System PIA, Bonneville Power Administration Land Record System PIA, Bonneville Power Administration Land Record System PIA, Bonneville Power Administration Land Record...

159

ThermoElectric Power System Simulator (TEPSS) | Department of...  

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

ThermoElectric Power System Simulator (TEPSS) ThermoElectric Power System Simulator (TEPSS) It describes the tool ThermoElectric Power System Simulator (TEPSS) which enables...

160

Enabling Sustainable Acquisition by Improving Procurement Systems  

Broader source: Energy.gov [DOE]

Fact sheet describes a case study of the Department of Energy Waste Pilot Plant (WIPP) enabling a sustainable acquisition by improving the procurement systems. The periodic review of the Environmental Management System (EMS) sub-systems is necessary to ensure that desired progress towards environmental objectives is being achieved.

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


161

Performance tuned radioisotope thermophotovoltaic space power system  

SciTech Connect (OSTI)

The trend in space exploration is to use many small, low-cost, special-purpose satellites instead of the large, high-cost, multipurpose satellites used in the past. As a result of this new trend, there is a need for lightweight, efficient, and compact radioisotope fueled electrical power generators. This paper presents an improved design for a radioisotope thermophotovoltaic (RTPV) space power system in the 10 W to 20 W class which promises up to 37.6 watts at 30.1{percent} efficiency and 25 W/kg specific power. The RTPV power system concept has been studied and compared to radioisotope thermoelectric generators (RTG) radioisotope, Stirling generators and alkali metal thermal electric conversion (AMTEC) generators (Schock, 1995). The studies indicate that RTPV has the potential to be the lightest weight, most efficient and most reliable of the three concepts. However, in spite of the efficiency and light weight, the size of the thermal radiator required to eliminate excess heat from the PV cells and the lack of actual system operational performance data are perceived as obstacles to RTPV acceptance for space applications. Between 1994 and 1997 EDTEK optimized the key converter components for an RTPV generator under Department of Energy (DOE) funding administered via subcontracts to Orbital Sciences Corporation (OSC) and EG&G Mound Applied Technologies Laboratory (Horne, 1995). The optimized components included a resonant micromesh infrared bandpass filter, low-bandgap GaSb PV cells and cell arrays. Parametric data from these components were supplied to OSC who developed and analyzed the performance of 100 W, 20 W, and 10 W RTPV generators. These designs are described in references (Schock 1994, 1995 and 1996). Since the performance of each class of supply was roughly equivalent and simply scaled with size, this paper will consider the OSC 20 W design as a baseline. The baseline 20-W RTPV design was developed by Schock, et al of OSC and has been presented elsewhere. The baseline design, centered around components and measured parametric data developed by EDTEK, Inc., promised an overall thermal-to-electric system output of 23 W at a conversion efficiency of 19{percent}, 1.92 kg system weight, and a specific power of 13.3 W/kg. The improved design reported herein promises up to 37.6 W at 30.1{percent} efficiency, 1.5 kg system weight, up to 25 W/kg specific power, a six-fold reduction in thermal radiator size over the baseline design, as well as a lower isotope temperature for greater safety. The six-fold reduction in thermal radiator size removes one of the greatest obstacles to applying RTPV in space missions. {copyright} {ital 1998 American Institute of Physics.}

Horne, W.E.; Morgan, M.D.; Saban, S.B. [EDTEK, Inc., 7082 South 220th Street, Kent, Washington 98032-1910 (United States)

1998-01-01T23:59:59.000Z

162

SunShot Initiative: Solar Power Tower Improvements with the Potential to  

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

Solar Power Tower Improvements Solar Power Tower Improvements with the Potential to Reduce Costs to someone by E-mail Share SunShot Initiative: Solar Power Tower Improvements with the Potential to Reduce Costs on Facebook Tweet about SunShot Initiative: Solar Power Tower Improvements with the Potential to Reduce Costs on Twitter Bookmark SunShot Initiative: Solar Power Tower Improvements with the Potential to Reduce Costs on Google Bookmark SunShot Initiative: Solar Power Tower Improvements with the Potential to Reduce Costs on Delicious Rank SunShot Initiative: Solar Power Tower Improvements with the Potential to Reduce Costs on Digg Find More places to share SunShot Initiative: Solar Power Tower Improvements with the Potential to Reduce Costs on AddThis.com... Concentrating Solar Power

163

Improving Industrial Refrigeration System Efficiency - Actual Applications  

E-Print Network [OSTI]

cycle cooling during winter operation, compressor intercooling, direct refrigeration vs. brine cooling, insulation of cold piping to reduce heat gain, multiple screw compressors for improved part load operation, evaporative condensers for reduced system...

White, T. L.

1980-01-01T23:59:59.000Z

164

Northern Power Systems | Open Energy Information  

Open Energy Info (EERE)

Northern Power Systems Northern Power Systems Place Barre, VT Website http://www.northernpowersystem References Northern Power Systems[1] Information About Partnership with NREL Partnership with NREL Yes Partnership Type CRADA Partnering Center within NREL National Wind Technology Center Partnership Year 2000 Link to project description http://www.nrel.gov/news/press/2000/34three.html LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! Northern Power Systems is a company located in Barre, VT. References ↑ "Northern Power Systems" Retrieved from "http://en.openei.org/w/index.php?title=Northern_Power_Systems&oldid=379254" Categories: Clean Energy Organizations Companies Organizations What links here Related changes Special pages Printable version

165

Flexibility in 21st Century Power Systems  

SciTech Connect (OSTI)

Flexibility of operation--the ability of a power system to respond to change in demand and supply--is a characteristic of all power systems. Flexibility is especially prized in twenty-first century power systems, with higher levels of grid-connected variable renewable energy (primarily, wind and solar). This paper summarizes the analytic frameworks that have emerged to measure this characteristic and distills key principles of flexibility for policy makers.

Cochran, J.; Miller, M.; Zinaman, O.; Milligan, M.; Arent, D.; Palmintier, B.; O'Malley, M.; Mueller, S.; Lannoye, E.; Tuohy, A.; Kujala, B.; Sommer, M.; Holttinen, H.; Kiviluoma, J.; Soonee, S. K.

2014-05-01T23:59:59.000Z

166

The effect of high penetration of wind power on primary frequency control of power systems.  

E-Print Network [OSTI]

??In this work, a power system with wind power units and hydro power units are considered. The hydro power unit and variable speed wind turbine… (more)

Motamed, Bardia

2013-01-01T23:59:59.000Z

167

Project Profile: Brayton Solar Power Conversion System  

Broader source: Energy.gov [DOE]

Brayton Energy, under the CSP R&D FOA, is looking to demonstrate the viability and economics of a new concentrating solar thermal power conversion system.

168

Power reduction techniques for microprocessor systems  

Science Journals Connector (OSTI)

Power consumption is a major factor that limits the performance of computers. We survey the “state of the art” in techniques that reduce the total power consumed by a microprocessor system over time. These techniques are applied at various ... Keywords: Energy dissipation, power reduction

Vasanth Venkatachalam; Michael Franz

2005-09-01T23:59:59.000Z

169

Comparing rig power transmission systems  

SciTech Connect (OSTI)

Installed power on drilling rigs has increased steadily since the inception of rotary drilling technology as a result of technical advances and the need to penetrate deeper horizons. Higher power levels for the pumps, rotary table and drawworks are also required for drilling deep wells within an economically reasonable period. Power initially available on a rig had been about 35 kW on average, whereas power values on modern rigs drilling ultra-deep wells are on the order of several thousand kW. The installed power values on modern drilling rigs, subdivided with respect to depth range, are shown. After safety, economic factors are of paramount importance to rig operators. Among these, which include low acquisition cost, long service life and ease of maintenance, a particularly decisive factor is high efficiency.

Gutsche, W.; Noevig, T.

1989-04-01T23:59:59.000Z

170

Water reactive hydrogen fuel cell power system  

DOE Patents [OSTI]

A water reactive hydrogen fueled power system includes devices and methods to combine reactant fuel materials and aqueous solutions to generate hydrogen. The generated hydrogen is converted in a fuel cell to provide electricity. The water reactive hydrogen fueled power system includes a fuel cell, a water feed tray, and a fuel cartridge to generate power for portable power electronics. The removable fuel cartridge is encompassed by the water feed tray and fuel cell. The water feed tray is refillable with water by a user. The water is then transferred from the water feed tray into the fuel cartridge to generate hydrogen for the fuel cell which then produces power for the user.

Wallace, Andrew P; Melack, John M; Lefenfeld, Michael

2014-11-25T23:59:59.000Z

171

Water reactive hydrogen fuel cell power system  

DOE Patents [OSTI]

A water reactive hydrogen fueled power system includes devices and methods to combine reactant fuel materials and aqueous solutions to generate hydrogen. The generated hydrogen is converted in a fuel cell to provide electricity. The water reactive hydrogen fueled power system includes a fuel cell, a water feed tray, and a fuel cartridge to generate power for portable power electronics. The removable fuel cartridge is encompassed by the water feed tray and fuel cell. The water feed tray is refillable with water by a user. The water is then transferred from the water feed tray into a fuel cartridge to generate hydrogen for the fuel cell which then produces power for the user.

Wallace, Andrew P; Melack, John M; Lefenfeld, Michael

2014-01-21T23:59:59.000Z

172

The Unseen Elephant: What Blocks Judicial System Improvement?  

E-Print Network [OSTI]

The Unseen Elephant: What Blocks Judicial Systemsystem improvement. The elephant in the judicial system’s

Sherwood, Robert M.

2007-01-01T23:59:59.000Z

173

Photovoltaic solar system connected to the electric power grid operating as active power generator and reactive power compensator  

SciTech Connect (OSTI)

In the case of photovoltaic (PV) systems acting as distributed generation (DG) systems, the DC energy that is produced is fed to the grid through the power-conditioning unit (inverter). The majority of contemporary inverters used in DG systems are current source inverters (CSI) operating at unity power factor. If, however, we assume that voltage source inverters (VSI) can replace CSIs, we can generate reactive power proportionally to the remaining unused capacity at any given time. According to the theory of instantaneous power, the inverter reactive power can be regulated by changing the amplitude of its output voltage. In addition, the inverter active power can be adjusted by modifying the phase angle of its output voltage. Based on such theory, both the active power supply and the reactive power compensation (RPC) can be carried out simultaneously. When the insolation is weak or the PV modules are inoperative at night, the RPC feature of a PV system can still be used to improve the inverter utilisation factor. Some MATLAB simulation results are included here to show the feasibility of the method. (author)

Albuquerque, Fabio L.; Moraes, Adelio J.; Guimaraes, Geraldo C.; Sanhueza, Sergio M.R.; Vaz, Alexandre R. [Universidade Federal de Uberlandia, Uberlandia-MG, CEP 38400-902 (Brazil)

2010-07-15T23:59:59.000Z

174

NREL: Water Power Research - Economic and Power System Modeling and  

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

Economic and Power System Modeling and Analysis Economic and Power System Modeling and Analysis NREL's Economic Analysis and power system modeling integrates data from device deployment and programmatic research into deployment and scenario models to quantify the economic and societal benefits of developing cost-competitive marine and hydrokinetic systems. It also identifies policy mechanisms, market designs, and supply chain needs to support various deployment scenarios, provide information and training to potential members of the marine and hydrokinetic (MHK) industry and effectively collaborate with all associated stakeholders. JEDI Modeling NREL worked with industry members to develop and provide public access to an easy-to-use input-output model that estimates the jobs and economic development impacts (JEDI) of MHK projects in the United States. The JEDI

175

Improved System Performance and Reduced Cost of a Fuel Reformer...  

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

Improved System Performance and Reduced Cost of a Fuel Reformer, LNT, and SCR Aftertreatment System Meeting Emissions Useful Life Requirement Improved System Performance and...

176

Measuring Improved Reliability in Stochastic Systems  

E-Print Network [OSTI]

for such a path, this represents a better measure of the path's reliability. If the distribution were asymmetricMeasuring Improved Reliability in Stochastic Systems Jeremy Bradley \\Lambda Neil Davies y 30 June 1999 Abstract In this paper, we examine reliability of stochastic systems with specific application

Bradley, Jeremy

177

Chapter 10 - Solar Thermal Power Systems  

Science Journals Connector (OSTI)

Abstract Chapter 10 deals with solar thermal power systems. Initially, the general design considerations are given followed by the presentation of the three basic technologies. These include the parabolic trough collector system, which includes a description of the PTC power plant and outlook of the technology; the power tower systems and the dish systems. This is followed by the thermal analysis of the basic cycles of solar thermal power plants. Subsequently, solar updraft tower systems are examined, which include the initial steps and first demonstration, and the thermal analysis. Finally, solar ponds are examined, which is a form of large solar collector and storage system that can be used for solar power generation and include practical design considerations, salty water transmission estimation, methods of heat extraction, description of two large experimental solar ponds, and applications of solar ponds.

Soteris A. Kalogirou

2014-01-01T23:59:59.000Z

178

Electronic power conditioning for dynamic power conversion in high-power space systems  

E-Print Network [OSTI]

require power levels above 10 kW, . For high energy levels of short duration, Chemical energy sources are effective choices. Utilizing magnetohydrodynamics (MHD), for example, these systems provide pulse power to their respective loads. And lastly, A...

Hansen, James Michael

1991-01-01T23:59:59.000Z

179

Power management in the EPOS system  

Science Journals Connector (OSTI)

Power management strategies for embedded systems typically rely on static, application driven deactivation of components (e.g. sleep, suspend), or on dynamic voltage and frequency scaling. However, the design and implementation of these strategies in ... Keywords: embedded systems, imprecise computation, power management

Geovani Ricardo Wiedenhoft; Lucas Francisco Wanner; Giovani Gracioli; Antônio Augusto Fröhlich

2008-10-01T23:59:59.000Z

180

High power laser perforating tools and systems  

DOE Patents [OSTI]

ystems devices and methods for the transmission of 1 kW or more of laser energy deep into the earth and for the suppression of associated nonlinear phenomena. Systems, devices and methods for the laser perforation of a borehole in the earth. These systems can deliver high power laser energy down a deep borehole, while maintaining the high power to perforate such boreholes.

Zediker, Mark S; Rinzler, Charles C; Faircloth, Brian O; Koblick, Yeshaya; Moxley, Joel F

2014-04-22T23:59:59.000Z

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


181

Princeton Power Systems (TRL 5 6 Component)- Marine High-Voltage Power Conditioning and Transmission System with Integrated Energy Storage  

Broader source: Energy.gov [DOE]

Princeton Power Systems (TRL 5 6 Component) - Marine High-Voltage Power Conditioning and Transmission System with Integrated Energy Storage

182

Ocean Renewable Power Co (ORPC) (TRL 7 8 System)- TidGen (TM) Power System Commercialization Project  

Broader source: Energy.gov [DOE]

Ocean Renewable Power Co (ORPC) (TRL 7 8 System) - TidGen (TM) Power System Commercialization Project

183

Rankine cycle power plant with improved organic working fluid  

SciTech Connect (OSTI)

In a Rankine cycle power plant having a boiler for vaporizing an organic working fluid which is applied to a turbine in which vaporized working fluid produced by the boiler expands and produces work, a condenser for condensing expanded vaporized working fluid exhausted by the turbine and producing condensate, and means for returning the condensate to the boiler, the improvement is described comprising: (a) operating the boiler so that the organic fluid vaporizes at substantially constant pressure and a temperature not exceeding 400/sup 0/C; (b) applying only vaporized working fluid to the turbine; and (c) using as the working fluid, a compound selected from the group consisting of bicyclic hydrocarbons, substituted bicyclic aromatic hydrocarbons, heterobicyclic aromatic hydrocarbons, substituted heterobicyclic aromatic hydrocarbons, bicyclic compounds where one ring is aromatic and the other condensed ring is nonaromatic, and their mixtures.

Yogev, A.; Mahlab, D.

1988-08-02T23:59:59.000Z

184

Columbia Power System | Open Energy Information  

Open Energy Info (EERE)

System System Jump to: navigation, search Name Columbia Power System Place Tennessee Utility Id 3855 Utility Location Yes Ownership M NERC Location SERC NERC SERC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png GENERAL POWER RATE From 51 kW to 1,000 kW Commercial GENERAL POWER RATE Up to 50 kW Commercial GENERAL POWER RATE(Demand greater than 1,000 kW not exceeding 5000kW) Commercial General Power Rate(Demand 5001-15000kW) Commercial MANUFACTURING SERVICE POWER RATE DEMAND 5,001-15,000 kW Commercial OUTDOOR LIGHTING STREET, PARKS, & ATHLETIC FIELDS Lighting

185

Power electronics in electric utilities: HVDC power transmission systems  

SciTech Connect (OSTI)

High Voltage Direct Current (HVDC) power transmission systems constitute an important application of power electronics technology. This paper reviews salient aspects of this growing industry. The paper summarizes the history of HVDC transmission and discusses the economic and technical reasons responsible for development of HVDC systems. The paper also describes terminal design and basic configurations of HVDC systems, as well as major equipments of HVDC transmission system. In this regard, the state-of-the-art technology in the equipments constructions are discussed. Finally, the paper reviews future developments in the HVDC transmission systems, including promising technologies, such as multiterminal configurations, Gate Turn-Off (GTO) devices, forced commutation converters, and new advances in control electronics.

Nozari, F.; Patel, H.S.

1988-04-01T23:59:59.000Z

186

Heatpipe space power and propulsion systems  

SciTech Connect (OSTI)

Safe, reliable, low-mass space power and propulsion systems could have numerous civilian and military applications. This paper discusses two fission-powered concepts: the Heatpipe Power System (HPS) that provides power only, and the Heatpipe Bimodal System (HBS) that provides both power and thermal propulsion. Both concepts have 10 important features. First, only existing technology and recently tested fuel forms are used. Second, fuel can be removed whenever desired, greatly facilitating system fabrication and handling. Third, full electrically heated system testing is possible, with minimal operations required to replace the heaters with fuel and ready the system for launch. Fourth, the systems are passively subcritical during launch accidents. Fifth, a modular approach is used, and most technical issues can be resolved with inexpensive module tests. Sixth, bonds between dissimilar metals are minimized. Seventh, there are no single point failures during power mode operation. Eighth, fuel burnup rate is quite low to help ensure greater than 10-year system life. Ninth, there are no pumped coolant loops, and the systems can be shut down and restarted without coolant freeze/thaw concerns. Finally, a full ground nuclear test is not needed, and development costs will be low. The baseline HPS uses SNAP-10A-style thermoelectric power converters to produce 5 kWe at a system mass of about 500 kg. The unicouple thermoelectric converters have a hot shoe temperature of 1275 K and reject waste heat at 775 K. This type of thermoelectric converter has been used extensively by the space program, demonstrating an operational lifetime of decades. At higher thermal power, the same core can produce over 10 kWe using thermoelectric converters, and over 50 kWe using advanced power conversion systems.

Houts, M.G.; Poston, D.I.; Ranken, W.A.

1995-07-01T23:59:59.000Z

187

Catalog of DC Appliances and Power Systems  

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

Catalog of DC Appliances and Power Systems Catalog of DC Appliances and Power Systems Title Catalog of DC Appliances and Power Systems Publication Type Report LBNL Report Number LBNL-5364E Year of Publication 2011 Authors Garbesi, Karina, Vagelis Vossos, and Hongxia Shen Document Number LBNL-5364E Date Published October Publisher Lawrence Berkeley National Laboratory Abstract This document catalogs the characteristics of current and potential future direct current (DC) products and power systems. It is part of a larger U.S. Department of Energy-funded project, "Direct-DC Power Systems for Energy Efficiency and Renewable Energy Integration with a Residential and Small Commercial Focus". That project is investigating the energy-savings potential, benefits, and barriers of using DC generated by on-site renewable energy systems directly in its DC form, rather than converting it first to alternating current (AC) for distribution to loads. Two related reports resulted from this work: this Catalog and a companion report that addresses direct-DC energy savings in U.S. residential buildings.Interest in 'direct-DC' is motivated by a combination of factors: the very rapid increase in residential and commercial photovoltaic (PV) power systems in the United States; the rapid expansion in the current and expected future use of energy efficient products that utilize DC power internally; the demonstrated energy savings of direct-DC in commercial data centers; and the current emergence of direct-DC power standards and products designed for grid-connected residential and commercial products. Based on an in-depth study of DC appliances and power systems, we assessed off-grid markets for DC appliances, the DC compatibility of mainstream electricity end-uses, and the emerging mainstream market for direct-DC appliances and power systems.

188

TFTR neutral-beam power system  

SciTech Connect (OSTI)

The TFTR Neutral Beam Power System (NBPS) consists of the accelerator grid power supply and the auxiliary power supplies required to operate the TFTR 120-keV ion sources. The current configuration of the NBPS including the 11-MVA accelerator grid power supply and the Arc and Filament power supplies isolated for operation at accelerator grid voltages up to 120 kV, is described. The prototype NBPS has been assembled at the Princeton Plasma Physics Laboratory and has been operated. The results of the initial operation and the description and resolution of some of the technical problems encountered during the commissioning tests are presented.

Winje, R.A.

1982-10-01T23:59:59.000Z

189

Innovative applications of technology for nuclear power plant productivity improvements  

SciTech Connect (OSTI)

The nuclear power industry in several countries is concerned about the ability to maintain high plant performance levels due to aging and obsolescence, knowledge drain, fewer plant staff, and new requirements and commitments. Current plant operations are labor-intensive due to the vast number of operational and support activities required by commonly used technology in most plants. These concerns increase as plants extend their operating life. In addition, there is the goal to further improve performance while reducing human errors and increasingly focus on reducing operations and maintenance costs. New plants are expected to perform more productively than current plants. In order to achieve and increase high productivity, it is necessary to look at innovative applications of modern technologies and new concepts of operation. The Electric Power Research Inst. is exploring and demonstrating modern technologies that enable cost-effectively maintaining current performance levels and shifts to even higher performance levels, as well as provide tools for high performance in new plants. Several modern technologies being explored can provide multiple benefits for a wide range of applications. Examples of these technologies include simulation, visualization, automation, human cognitive engineering, and information and communications technologies. Some applications using modern technologies are described. (authors)

Naser, J. A. [Electric Power Research Inst., 3420 Hillview Avenue, Palo Alto, CA 94303 (United States)

2012-07-01T23:59:59.000Z

190

Versa Power Systems | Open Energy Information  

Open Energy Info (EERE)

Power Systems Power Systems Jump to: navigation, search Logo: Versa Power Systems Name Versa Power Systems Address 8392 Continental Divide Road, Suite 101 Place Littleton, Colorado Zip 80127 Sector Hydrogen Product Developing solid oxide fuel cells Website http://www.versa-power.com/ Coordinates 39.5676518°, -105.1208444° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.5676518,"lon":-105.1208444,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

191

Jadoo Power Systems Inc | Open Energy Information  

Open Energy Info (EERE)

Jadoo Power Systems Inc Jadoo Power Systems Inc Jump to: navigation, search Name Jadoo Power Systems Inc Place Folsom, California Zip 95630 Product US-based fuel cell developer, Jadoo Power Systems Inc, produces high energy density power products for the law enforcement, military and electronic news gathering applications. Coordinates 39.474081°, -80.529699° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.474081,"lon":-80.529699,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

192

Doublet III neutral beam power system  

SciTech Connect (OSTI)

The Doublet III neutral beam power system supplies pulsed power to the neutral beam injectors for plasma heating experiments on the Doublet III tokamak. The power supply system is connected to an ion source where the power is converted to an 80 kV, 80A, 0.5 sec beam of hydrogen ions at maximum power output. These energetic ions undergo partial neutralization via charge exchange in the beamline. The energetic neutral hydrogen atoms pass through the Doublet III toroidal and poloidal magnet fields and deposit their energy in the confined plasma. The unneutralized ions are deflected into a water-cooled dump. The entire system is interfaced through the neutral beam computer instrumentation and control system.

Nerem, A.; Beal, J.W.; Colleraine, A.P.; LeVine, F.H.; Pipkins, J.F.; Remsen, D.B. Jr.; Tooker, J.F.; Varga, H.J.; Franck, J.V.

1981-01-01T23:59:59.000Z

193

Combined cooling, heating and power: A review of performance improvement and optimization  

Science Journals Connector (OSTI)

Abstract This paper presents a review on combined cooling, heating, and power (CCHP) systems. This work summarizes the methods used to perform energetic and exergetic analyses, system optimization, performance improvement studies, and development and analysis of CCHP systems, as reported in existing literature. In addition, this work highlights the most current research and emerging trends in CCHP technologies. It is envisioned that the information collected in this review paper will be a valuable source of information, for researchers, designers, and engineers, and provides direction and guidance for future research in CCHP technology.

Heejin Cho; Amanda D. Smith; Pedro Mago

2014-01-01T23:59:59.000Z

194

DOE Scientist Earns Chairman's Award from Propulsion and Power Systems  

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

Scientist Earns Chairman's Award from Propulsion and Power Scientist Earns Chairman's Award from Propulsion and Power Systems Alliance DOE Scientist Earns Chairman's Award from Propulsion and Power Systems Alliance October 2, 2009 - 1:00pm Addthis Washington, DC - A researcher at the Office of Fossil Energy's National Energy Technology Laboratory (NETL) has been presented with the Chairman's Award by the Propulsion and Power Systems Alliance (PPSA). Mary Anne Alvin, a physical scientist in NETL's Office of Research and Development, was recognized for her lead role in revitalizing the PPSA Materials Technical Area Team. This prestigious award is only given during a year when outstanding service is observed. The PPSA was formed in 1999 with the mission of improving coordination and collaboration among government agencies to better leverage existing federal

195

NETL: Gasification Systems - Power Systems Development Facility (PSDF)  

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

Power Systems Development Facility (PSDF) Power Systems Development Facility (PSDF) Project No.: DE-FC21-90MC25140 Power Systems Development Facility (PSDF) Project ID: DE-FC21-90MC25140 NETL Contact: Morgan Mosser (304) 285-4723 Organization: Southern Company Services, Inc. - Birmingham, AL Project Timeline: Start: 09/14/1990 End: 01/31/2009 Power Systems Development Facility The objectives of the work at the Power Systems Development Facility (PSDF) are two-fold; development of the Transport Gasifier for a wide range of US coals from high sodium lignite to Midwestern bituminous and provide a test platform to test various critical components that are likely to appear in future advanced coal-based power facilities producing power and fuels such as hydrogen with zero emissions. With regard to the development of the

196

Thermodynamics of a desalination system at nuclear power stations  

Science Journals Connector (OSTI)

Nuclear power engineering is developing steadily in industrial countries. This is caused by features of using nuclear fuel and high environmental safety of nuclear power stations. At the same time, the thermodynamic efficiency of nuclear power stations is lower than indices of thermal power stations operating on gas, coal or oil fuel. This efficiency does not usually exceed 30â??35%. Hence more than 60% of the energy of nuclear fuel being used escapes into the environment through turbine condensers at nuclear power stations. Cogeneration turbines that reduce heat loss by 20â??30% are used at thermal power stations for efficiency upgrading. However, cogeneration schemes have not found wide utility at nuclear power stations due to safety conditions. Thus, it is possible to use, in addition, a major part of nuclear fuel energy for desalination at nuclear power stations located on the coast. In this case, some main problems are solved: production of fresh water consumed by nuclear power station for technological purposes and sold to external consumers; upgrading of effectiveness of using nuclear fuel including the cost of steady operation of nuclear power stations at high loads; reduction of non-productive thermal pollutants from nuclear power stations into the environment. It is required to provide maximum upgrading of power station heat efficiency and high capacity of distillers when connecting desalination installations to the thermal scheme of nuclear power stations. The use of energy of the heat carrier's low-temperature flows being emitted by turbine condensers into the environment is of particular value. In this case, different thermodynamic analysis methods are used for the justification of optimal engineering solutions In the article under consideration some results of research of thermodynamics of cycles of nuclear power stations where thermal schemes includes different types of thermal desalination installations are given. From the analysis of thermodynamic processes carried out at nuclear power stations, recommendations related to improvement of desalination installations' thermal schemes providing power system efficiency upgrading have been obtained.

V.V. Slesarenko

2003-01-01T23:59:59.000Z

197

Chapter 10 - Novel Power Generating Systems  

Science Journals Connector (OSTI)

Abstract In this chapter, some novel power generating systems are discussed. It is believed that sustainable thermal energy sources such as industrial waste heat recovery, concentrated solar radiation, ocean thermal energy, nuclear heat, and biomass combustion will gradually become more important. The first part of the chapter presents a novel system for power conversion from low-grade heat. This is an advanced ammonia–water-based power cycle able to operate with minimal exergy destruction due to an excellent match of temperature profiles at the heat source and sink. The chapter continues with thermoelectric power generators that can address the challenge of efficient power generation from high-grade thermal energy. Chemical looping combustion systems for power generation are treated thereafter for situations when carbon emissions must be reduced by carbon dioxide separation and sequestration or partial recycling. The last section of the chapter presents a number of selected novel systems for power generation, including magneto-hydrodynamic generators, thermoacoustic generators, and cryogenic compression oxy-combustion power plants with supercritical carbon dioxide and some novel integrated systems.

Ibrahim Dincer; Calin Zamfirescu

2014-01-01T23:59:59.000Z

198

Saft Power Systems | Open Energy Information  

Open Energy Info (EERE)

Saft Power Systems Saft Power Systems Jump to: navigation, search Name Saft Power Systems Place Nanterre, France Zip 92004 Sector Solar Product French manufacturer of power supplies and systems, servicing the telecom and coal industries; in particular, manufacturers inverters and balance of systems for solar industry. Coordinates 48.88811°, 2.194915° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":48.88811,"lon":2.194915,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

199

Optimal placement and sizing of FACTS devices for loadability enhancement in deregulated power systems  

Science Journals Connector (OSTI)

This paper presents the use of Flexible AC Transmission Systems (FACTS) for improving loadability of the system in deregulated electric power system. The optimallocation and parameter settingsof two types of FACTS devices have been investigated in this ... Keywords: harmony search algorithm, loadability, particle swarm optimization, power system loadability, static synchronous series compensator (SSSC), thyristor controlled series compensation (TCSC), unified

Mahmoud Mohammadi; Alireza Rezazadeh; Mostafa Sedighizadeh

2012-02-01T23:59:59.000Z

200

Multi-Megawatt Power System Trade Study  

SciTech Connect (OSTI)

A concept study was undertaken to evaluate potential multi-megawatt power sources for nuclear electric propulsion. The nominal electric power requirement was set at 15 MWe with an assumed mission profile of 120 days at full power, 60 days in hot standby, and another 120 days of full power, repeated several times for 7 years of service. Two configurations examined were (1) a gas-cooled reactor based on the NERVA Derivative design, operating a closed cycle Brayton power conversion system; and (2) a molten metal-cooled reactor based on SP-100 technology, driving a boiling potassium Rankine power conversion system. This study considered the relative merits of these two systems, seeking to optimize the specific mass. Conclusions were that either concept appeared capable of approaching the specific mass goal of 3-5 kg/kWe estimated to be needed for this class of mission, though neither could be realized without substantial development in reactor fuels technology, thermal radiator mass efficiency, and power conversion and distribution electronics systems capable of operating at high temperatures. The gas-Brayton systems showed an apparent specific mass advantage (3.53 vs 6.43 kg/kWe for the baseline cases) under the set of assumptions used, but reconciling differences in conservatism in the design algorithms used would make results much more comparable. Brayton systems eliminate the need to deal with two-phase working fluid flows in the microgravity environment of space.

Longhurst, Glen Reed; Schnitzler, Bruce Gordon; Parks, Benjamin Travis

2002-02-01T23:59:59.000Z

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


201

Improvement and Simplification of Diesel Particulate Filter System...  

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

FBC Improve the ash management (filter) Simplify the onboard dosing system and decrease cost and Chemist Ceramist Fuel system specialist Improve the vehicle integration for a Fit...

202

Energy Savings Through Improved Mechanical Systems and Building...  

Office of Environmental Management (EM)

Energy Savings Through Improved Mechanical Systems and Building Envelope Technologies (DE-FOA-0000621) Energy Savings Through Improved Mechanical Systems and Building Envelope...

203

Power System Frequency Control Characteristics as a Function of Nuclear Power Plant Participation  

Science Journals Connector (OSTI)

When the participation of nuclear power plants in electric power system increases then they have to be ... take an increasing part in the frequency and power control of the power system. However there are specifi...

Z. Domachowski

1988-01-01T23:59:59.000Z

204

Techno-economic Appraisal of Concentrating Solar Power Systems (CSP).  

E-Print Network [OSTI]

?? The diffusion of Concentrating Solar Power Systems (CSP) systems is currently taking place at a much slower pace than photovoltaic (PV) power systems. This… (more)

Gasti, Maria

2013-01-01T23:59:59.000Z

205

Wind for Schools Project Power System Brief  

SciTech Connect (OSTI)

This fact sheet provides an overview of the system components of a Wind Powering America Wind for Schools project. Wind Powering America's (WPA's) Wind for Schools project uses a basic system configuration for each school project. The system incorporates a single SkyStream(TM) wind turbine, a 70-ft guyed tower, disconnect boxes at the base of the turbine and at the school, and an interconnection to the school's electrical system. A detailed description of each system component is provided in this document.

Not Available

2007-08-01T23:59:59.000Z

206

Prospects for attractive fusion power systems  

Science Journals Connector (OSTI)

...Robinson Prospects for attractive fusion power systems Farrokh Najmabadi...commercial product. Today's fusion experiments, by their charter...power plant; the International Thermonuclear Experimental Reac- tor (ITER...for rapid maintenance of the fusion core (the so-called mean...

1999-01-01T23:59:59.000Z

207

Advanced Power Systems and Controls Laboratory  

E-Print Network [OSTI]

photovoltaic generation facility. Solar panel output is in white, and the response of the XP DPR is in red Solar Power Generation Introduction The rapid growth of wind and solar power is a key driver of the development of grid-scale Battery Energy Storage Systems (BESS). A well implemented BESS co-located with solar

Ben-Yakar, Adela

208

Direct current power transmission systems  

SciTech Connect (OSTI)

This book represents text on HVDC transmission available. It deals with the various aspects of the state of the art in HVDC transmission technology. This book presents many aspects of interactions of AC/DC systems. Modeling and analysis of DC systems are also discussed in detail.

Padiyar, K.R.

1991-01-01T23:59:59.000Z

209

A linear MOSFET regulator for improving performance of the booster ramping power supplies at the APS.  

SciTech Connect (OSTI)

The APS booster ring uses ramping power supplies to power the sextupole, quadrupole, and dipole magnets as the beam energy ramps up linearly to 7 GeV. Due to the circuit topology used, those supplies are unable to follow the linear ramp to the desired accuracy. The best regulation achieved is 0.25% while 0.1% is desired. In addition to the unsatisfying regulation, those supplies are sensitive to AC line perturbation and are not able to reject AC line noises of more than a few tens of hertz. To improve the performance, a linear MOSFET regulation system using paralleled MOSFET devices in series with the power supply is proposed. The system uses a realtime current feedback loop to force the MOSFETs to work in the linear operation mode. By using this linear MOSFET regulator, the voltage drop on MOSFETs, and hence the voltage imposed on magnets, can be regulated very quickly. As a result, the regulation of the magnet current can be improved significantly. So far the simulation results show that with the linear regulator, the current regulation can be improved to better than 0.1%. Because of the high bandwidth of the linear regulator, it can reduce the harmonic content in the output current as well as reject the AC line disturbance. This paper discusses the circuit topology, the regulation method, and the simulation results.

Feng, G.; Deriy, B.; Wang, J.; Accelerator Systems Division (APS)

2008-01-01T23:59:59.000Z

210

Promethean Power Systems | Open Energy Information  

Open Energy Info (EERE)

Promethean Power Systems Promethean Power Systems Jump to: navigation, search Name Promethean Power Systems Place Cambridge, Massachusetts Zip 2138 Product US-based developer of a solar-powered refrigeration system, specializing in off-grid and partially electrified applications. Coordinates 43.003745°, -89.017499° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.003745,"lon":-89.017499,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

211

Power systems | Princeton Plasma Physics Lab  

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

Power systems Power systems Subscribe to RSS - Power systems The systems, such as fusion power plants, that would generate electricity from fusion. Celebrating the 20th anniversary of the tritium shot heard around the world PPPL's historic experiment made global headlines and marked a milestone in the development of fusion energy Read more about Celebrating the 20th anniversary of the tritium shot heard around the world Premiere issue of "Quest" magazine details PPPL's strides toward fusion energy and advances in plasma science Quest Magazine Summer 2013 Welcome to the premiere issue of Quest, the annual magazine of the U.S. Department of Energy's Princeton Plasma Physics Laboratory (PPPL). Read more about Premiere issue of "Quest" magazine details PPPL's

212

Renewable Energy Powered Water Treatment Systems   

E-Print Network [OSTI]

There are many motivations for choosing renewable energy technologies to provide the necessary energy to power water treatment systems for reuse and desalination. These range from the lack of an existing electricity grid, ...

Richards, Bryce S.; Schäfer, Andrea

2009-01-01T23:59:59.000Z

213

Computing Criticality of Lines in Power Systems  

E-Print Network [OSTI]

Computing Criticality of Lines in Power Systems Ali P?narto identify critical lines, failure of which can causecriticality measure for all lines at a time, as opposed to

Pinar, Ali; Reichert, Adam; Lesieutre, Bernard

2006-01-01T23:59:59.000Z

214

Fly ash system technology improves opacity  

SciTech Connect (OSTI)

Unit 3 of the Dave Johnston Power Plant east of Glenrock, WY, USA had problems staying at or below the opacity limits set by the state. The unit makes use of a Lodge Cottrell precipitator. When the plant changed to burning Power River Basin coal, ash buildup became a significant issue as the fly ash control system was unable to properly evacuate hoppers on the unit. To overcome the problem, the PLC on the unit was replaced with a software optimization package called SmartAsh for the precipitator fly ash control system, at a cost of $500,000. After the upgrade, there have been no plugged hoppers and the opacity has been reduced from around 20% to 3-5%. 2 figs.

NONE

2007-06-15T23:59:59.000Z

215

Security and stability control system for offshore platforms power grid  

Science Journals Connector (OSTI)

The key technology for offshore platform power grid interlinked-Energy Management System (EMS) is studied in this article. The perfect EMS control solutions are formulated and carried on by the studies of the control strategies of frequency control, voltage control, precedence load shedding, high frequency trip generator, communication failure, and so on according to the power flow and fault simulation calculations against all kinds of working modes of the grid. The power supply effects before and after using the power grid interlink and EMS control are contrasted. Their application has improved the power supply reliability, boosted up the ability against impacts, decreased the spare capability of generators, reduced the maintenance work, and saved the investment.

Zhang Jifen; Hu Peng; Liu Jun

2009-01-01T23:59:59.000Z

216

Variable pressure power cycle and control system  

DOE Patents [OSTI]

A variable pressure power cycle and control system that is adjustable to a variable heat source is disclosed. The power cycle adjusts itself to the heat source so that a minimal temperature difference is maintained between the heat source fluid and the power cycle working fluid, thereby substantially matching the thermodynamic envelope of the power cycle to the thermodynamic envelope of the heat source. Adjustments are made by sensing the inlet temperature of the heat source fluid and then setting a superheated vapor temperature and pressure to achieve a minimum temperature difference between the heat source fluid and the working fluid.

Goldsberry, Fred L. (Spring, TX)

1984-11-27T23:59:59.000Z

217

Solar Power Systems Web Monitoring  

E-Print Network [OSTI]

All over the world the peak demand load is increasing and the load factor is decreasing year-by-year. The fossil fuel is considered insufficient thus solar energy systems are becoming more and more useful, not only in terms of installation but monitoring of these systems is very crucial. Monitoring becomes very important when there are a large number of solar panels. Monitoring would allow early detection if the output falls below required level or one of the solar panel out of 1000 goes down. In this study the target is to monitor and control a developed solar panel by using available internet foundation. This web-enabled software will provide more flexibility over the system such as transmitting data from panel to the host computer and disseminating information to relevant stake holders barring any geographical barrier. The software would be built around web server with dynamic HTML and JAVA, this paper presents the preliminary design of the proposed system.

Kumar, Bimal Aklesh

2011-01-01T23:59:59.000Z

218

Space Power System Modeling with EBAL  

SciTech Connect (OSTI)

Pratt and Whitney Rocket dyne's Engine Balance (EBAL) thermal/fluid system code has been expanded to model nuclear power closed Brayton cycle (CBC) power conversion systems. EBAL was originally developed to perform design analysis of hypersonic vehicle propellant and thermal management systems analysis. Later, it was adapted to rocket engine cycles. The new version of EBAL includes detailed, physics-based models of all key CBC system components. Some component examples are turbo-alternators, heat exchangers, heat pipe radiators, and liquid metal pumps. A liquid metal cooled reactor is included and a gas cooled reactor model is in work. Both thermodynamic and structural analyses are performed for each component. EBAL performs steady-state design analysis with optimization as well as off-design performance analysis. Design optimization is performed both at the component level by the component models and on the system level with a global optimizer. The user has the option to manually drive the optimization process or run parametric analysis to better understand system trade-off. Although recent EBAL developments have focused on a CBC conversion system, the code is easily extendible to other power conversion cycles. This new, more powerful version of EBAL allows for rapid design analysis and optimization of space power systems. A notional example of EBAL's capabilities is included. (authors)

Zillmer, Andrew; Hanks, David; Wen-Hsiung 'Tony' Tu [Pratt and Whitney Rocketdyne, 6633 Canoga Avenue MC LA 13, PO Box 7922, Canoga Park, CA 91309 (United States)

2006-07-01T23:59:59.000Z

219

Heavy Vehicle Essential Power Systems Workshop  

SciTech Connect (OSTI)

Essential power is a crosscutting technology area that addresses the efficient and practical management of electrical and thermal requirements on trucks. Essential Power Systems: any function on the truck, that is not currently involved in moving the truck, and requires electrical or mechanical energy; Truck Lights; Hotel Loads (HVAC, computers, appliances, lighting, entertainment systems); Pumps, starter, compressor, fans, trailer refrigeration; Engine and fuel heating; and Operation of power lifts and pumps for bulk fluid transfer. Transition from ''belt and gear driven'' to auxiliary power generation of electricity - ''Truck Electrification'' 42 volts, DC and/ or AC; All electrically driven auxiliaries; Power on demand - manage electrical loads; Benefits include: increased fuel efficiency, reduced emission both when truck is idling and moving down the road.

Susan Rogers

2001-12-12T23:59:59.000Z

220

Automated Surface Observing System: Standby Power Options  

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

Automated Automated Surface Observing System Standby Options Power Automated Surface Observing System (ASOS) General System Description * Self contained group of sensors and data gathering equipment that produces an automated weather observation * Weather observations support aviation, climate data, non government weather operations, public consumption, etc. * Initial deployment began in 1991 and continued through 1997 * Located at 884 sites nationwide, normally at airports * System has two distinct subsystems: Field installed equipment (DCP & Sensor Group) and an indoor processor (ACU) with peripherals * Separate facility power for DCP & Sensors and ACU 1 * measure and collect data * Located on the airport * back up group for 10 minutes * Currently pl

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


221

Fossil Power Plant Applications of Expert Systems: An EPRI Perspective  

E-Print Network [OSTI]

the role of expert systems in the electric power industry, with particular emphasis on six fossil power plant applications currently under development by the Electric Power Research Institute....

Divakaruni, S. M.

222

Power System Extreme Event Detection: The Vulnerability Frontier  

E-Print Network [OSTI]

Contingencies in Electric Power Networks,” proceedings ofthe North American Power Symposium, Ames, IA, OctoberScreening in Electric Power Systems,” submitted to the IEEE

Lesieutre, Bernard C.; Pinar, Ali; Roy, Sandip

2007-01-01T23:59:59.000Z

223

Electricity for road transport, flexible power systems and wind...  

Open Energy Info (EERE)

Electricity for road transport, flexible power systems and wind power (Smart Grid Project) Jump to: navigation, search Project Name Electricity for road transport, flexible power...

224

Photonic Power Systems Inc | Open Energy Information  

Open Energy Info (EERE)

Power Systems Inc Power Systems Inc Jump to: navigation, search Name Photonic Power Systems Inc Place Cupertino, California Zip 95014-2305 Product Provider of GaAs and InP-based solutions for delivering electrical power over fibre for numerous electronic applications. Coordinates 37.31884°, -122.029244° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.31884,"lon":-122.029244,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

225

Princeton Power Systems | Open Energy Information  

Open Energy Info (EERE)

Power Systems Power Systems Jump to: navigation, search Name Princeton Power Systems Place Princeton, New Jersey Zip 8540 Product Focused on advanced power conversion technologies -controllers and inverters. Coordinates 43.85105°, -89.129909° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.85105,"lon":-89.129909,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

226

Micro Hydro-Diesel Hybrid Power System  

E-Print Network [OSTI]

This paper presents the design and analysis of Neuro-Fuzzy controller based on Adaptive Neuro-Fuzzy Inference System (ANFIS) architecture for Load frequency control of an isolated wind-micro hydro-diesel hybrid power system, to regulate the frequency deviation and power deviations. Due to the sudden load changes and intermittent wind power, large frequency fluctuation problem can occur. This newly developed control strategy combines the advantage of neural networks and fuzzy inference system and has simple structure that is easy to implement. So, in order to keep system performance near its optimum, it is desirable to track the operating conditions and use updated parameters to control the system. Simulations of the proposed ANFIS based Neuro-Fuzzy controller in an isolated wind-micro hydro-diesel hybrid power system with different load disturbances are performed. Also, a conventional proportional Integral (PI) controller and a fuzzy logic (FL) controller were designed separately to control the same hybrid power system for the performance comparison. The performance of the proposed controller is verified from simulations and comparisons. Simulation results show that the performance of the proposed ANFIS based Neuro-Fuzzy Controller damps out the frequency deviation and attains the steady state value with less settling time. The proposed ANFIS based Neuro-Fuzzy controller provides best control performance over a wide range of operating conditions.

Dhanalakshmi R; Palaniswami S

227

Improved Refractory Materials for Slagging Gasification Systems  

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

Fac Fac ts Materials Science contact Bryan Morreale Focus Area Leader (Acting) Materials Science Office of Research and Development National Energy Technology Laboratory 626 Cochrans Mill Road P.O. Box 10940 Pittsburgh, PA 15326 412-386-5929 bryan.morreale@netl.doe.gov Partner Harbison-Walker Refractories Company Improved Refractory Materials for Slagging Gasification Systems Advances in technology are often directly linked to materials development. For

228

Active high-power RF switch and pulse compression system  

DOE Patents [OSTI]

A high-power RF switching device employs a semiconductor wafer positioned in the third port of a three-port RF device. A controllable source of directed energy, such as a suitable laser or electron beam, is aimed at the semiconductor material. When the source is turned on, the energy incident on the wafer induces an electron-hole plasma layer on the wafer, changing the wafer's dielectric constant, turning the third port into a termination for incident RF signals, and. causing all incident RF signals to be reflected from the surface of the wafer. The propagation constant of RF signals through port 3, therefore, can be changed by controlling the beam. By making the RF coupling to the third port as small as necessary, one can reduce the peak electric field on the unexcited silicon surface for any level of input power from port 1, thereby reducing risk of damaging the wafer by RF with high peak power. The switch is useful to the construction of an improved pulse compression system to boost the peak power of microwave tubes driving linear accelerators. In this application, the high-power RF switch is placed at the coupling iris between the charging waveguide and the resonant storage line of a pulse compression system. This optically controlled high power RF pulse compression system can handle hundreds of Megawatts of power at X-band.

Tantawi, Sami G. (San Mateo, CA); Ruth, Ronald D. (Woodside, CA); Zolotorev, Max (Mountain View, CA)

1998-01-01T23:59:59.000Z

229

PEMFC Power System on EthanolPEMFC Power System on Ethanol Caterpillar Inc.Caterpillar Inc.  

E-Print Network [OSTI]

PEMFC Power System on EthanolPEMFC Power System on Ethanol Caterpillar Inc.Caterpillar Inc. Thomas J. RichardsThomas J. Richards #12;PEM ETHANOL FUEL CELL DOE Hydrogen & Fuel Cells 2003 Annual Merit Review 21 May 2003 #12;PEM ETHANOL FUEL CELL In 2003, a 10-15 kW stationary PEM fuel cell system

230

Prospects on fuel economy improvements for hydrogen powered vehicles.  

SciTech Connect (OSTI)

Fuel cell vehicles are the subject of extensive research and development because of their potential for high efficiency and low emissions. Because fuel cell vehicles remain expensive and the demand for hydrogen is therefore limited, very few fueling stations are being built. To try to accelerate the development of a hydrogen economy, some original equipment manufacturers (OEM) in the automotive industry have been working on a hydrogen-fueled internal combustion engine (ICE) as an intermediate step. Despite its lower cost, the hydrogen-fueled ICE offers, for a similar amount of onboard hydrogen, a lower driving range because of its lower efficiency. This paper compares the fuel economy potential of hydrogen-fueled vehicles to their conventional gasoline counterparts. To take uncertainties into account, the current and future status of both technologies were considered. Although complete data related to port fuel injection were provided from engine testing, the map for the direct-injection engine was developed from single-cylinder data. The fuel cell system data represent the status of the current technology and the goals of FreedomCAR. For both port-injected and direct-injected hydrogen engine technologies, power split and series Hybrid Electric Vehicle (HEV) configurations were considered. For the fuel cell system, only a series HEV configuration was simulated.

Rousseau, A.; Wallner, T.; Pagerit, S.; Lohse-Bush, H. (Energy Systems)

2008-01-01T23:59:59.000Z

231

TidGen Power System Commercialization Project  

SciTech Connect (OSTI)

ORPC Maine, LLC, a wholly-owned subsidiary of Ocean Renewable Power Company, LLC (collectively ORPC), submits this Final Technical Report for the TidGen® Power System Commercialization Project (Project), partially funded by the U.S. Department of Energy (DE-EE0003647). The Project was built and operated in compliance with the Federal Energy Regulatory Commission (FERC) pilot project license (P-12711) and other permits and approvals needed for the Project. This report documents the methodologies, activities and results of the various phases of the Project, including design, engineering, procurement, assembly, installation, operation, licensing, environmental monitoring, retrieval, maintenance and repair. The Project represents a significant achievement for the renewable energy portfolio of the U.S. in general, and for the U.S. marine hydrokinetic (MHK) industry in particular. The stated Project goal was to advance, demonstrate and accelerate deployment and commercialization of ORPC’s tidal-current based hydrokinetic power generation system, including the energy extraction and conversion technology, associated power electronics, and interconnection equipment capable of reliably delivering electricity to the domestic power grid. ORPC achieved this goal by designing, building and operating the TidGen® Power System in 2012 and becoming the first federally licensed hydrokinetic tidal energy project to deliver electricity to a power grid under a power purchase agreement in North America. Located in Cobscook Bay between Eastport and Lubec, Maine, the TidGen® Power System was connected to the Bangor Hydro Electric utility grid at an on-shore station in North Lubec on September 13, 2012. ORPC obtained a FERC pilot project license for the Project on February 12, 2012 and the first Maine Department of Environmental Protection General Permit issued for a tidal energy project on January 31, 2012. In addition, ORPC entered into a 20-year agreement with Bangor Hydro Electric Company on January 1, 2013 for up to 5 megawatts at a price of $215/MWh, escalating at 2.0% per year.

Sauer, Christopher R. [President & CEO] [President & CEO; McEntee, Jarlath [VP Engineering & CTO] [VP Engineering & CTO

2013-12-30T23:59:59.000Z

232

Low-Cost Packaged Combined Heat and Power System | Department...  

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

Low-Cost Packaged Combined Heat and Power System Low-Cost Packaged Combined Heat and Power System Introduction Many combined heat and power (CHP) systems less than 1 megawatt (MW)...

233

Center for Power Electronics Systems CENTER PROGRAM SNAPSHOT  

E-Print Network [OSTI]

Research OVERVIEW: Engineered Systems Integrated Motor Drive Systems Power Distribution Systems Sustainable for Power Electron- ics Systems (CPES) are working to make electric power processing more efficient and more electricity to the next step and develop power processing systems of the highest value to society. A SYSTEMS

Beex, A. A. "Louis"

234

Tennessee, Pennsylvania: Porous Power Technologies Improves Lithium Ion Battery, Wins R&D 100 Award  

Office of Energy Efficiency and Renewable Energy (EERE)

Porous Power Technologies, partnered with Oak Ridge National Laboratory (ORNL), developed SYMMETRIX HPX-F, a nanocomposite separator for improved lithium-ion battery technology.

235

Towards Improving the``Detection" Power of Brain Imaging Experiments Using fNIRS  

Science Journals Connector (OSTI)

To improve ``detection" power, dynamical time warping averaging algorithm is introduced for averaging the hemodynamic responses across blocks. It is applied on N-back tasks and shown...

Zhu, Li; Peifer, Maria; Najafizadeh, Laleh

236

Western Area Power Administration. Combined power system financial statements  

SciTech Connect (OSTI)

This report presents the results of the independent certified public accountants` audit of the Western Area Power Administration`s combined power system statements of assets, Federal investment and liabilities, and the related combined statements of revenues, expenses and accumulated net revenues, and cash flows. The auditors` report on Westerns internal control structure disclosed three new reportable conditions concerning the lack of: (1) a reconciliation of stores inventory from subsidiary ledgers to summary financial information, (2) communication of interest during construction and related adjustments to interest on Federal investment, and (3) a system to prevent and detect power billing errors. None of the conditions were considered to be material weaknesses. Western provided concurrence and corrective action plans. The auditors` report on Western`s compliance with laws and regulations also disclosed two new instances of noncompliance. Western failed to calculate nonreimbursable expenses in accordance with the Grand Canyon Protection Act and had an unexplained difference in gross Federal investment balances used to calculate interest on Federal investment. Western provided concurrence and corrective action plans for the instances.

NONE

1998-02-26T23:59:59.000Z

237

A three phase load flow algorithm for Shipboard Power Systems  

E-Print Network [OSTI]

to distribution systems since the assumptions made for transmission systems are not valid for the unique characteristics of distribution systems. A Shipboard Power System (SPS) is a finite inertia electric power system. The generation, transmission...

Medina-Calder?on, M?onica M

2012-06-07T23:59:59.000Z

238

Utilizing the Traction Drive Power Electronics System to Provide...  

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

Utilizing the Traction Drive Power Electronics System to Provide Plug-in Capability for PHEVs Utilizing the Traction Drive Power Electronics System to Provide Plug-in Capability...

239

SciTech Connect: Nuclear power reactor instrumentation systems...  

Office of Scientific and Technical Information (OSTI)

Nuclear power reactor instrumentation systems handbook. Volume 1 Citation Details In-Document Search Title: Nuclear power reactor instrumentation systems handbook. Volume 1 You...

240

Ultra Efficient Combined Heat, Hydrogen, and Power System - Fact...  

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

Ultra Efficient Combined Heat, Hydrogen, and Power System - Fact Sheet, 2011 Ultra Efficient Combined Heat, Hydrogen, and Power System - Fact Sheet, 2011 FuelCell Energy, Inc., in...

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


241

Development of an Advanced Combined Heat and Power (CHP) System...  

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

an Advanced Combined Heat and Power (CHP) System Utilizing Off-Gas from Coke Calcination - Fact Sheet, 2011 Development of an Advanced Combined Heat and Power (CHP) System...

242

Ultra Efficient Combined Heat, Hydrogen, and Power System - Presentati...  

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

Ultra Efficient Combined Heat, Hydrogen, and Power System - Presentation by FuelCell Energy, June 2011 Ultra Efficient Combined Heat, Hydrogen, and Power System - Presentation by...

243

Thermoelectrics: From Space Power Systems to Terrestrial Waste...  

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

Thermoelectrics: From Space Power Systems to Terrestrial Waste Heat Recovery Applications Thermoelectrics: From Space Power Systems to Terrestrial Waste Heat Recovery Applications...

244

Turner Hunt Ocean Renewable (TRL 4 System) - THOR's Power Method...  

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

Turner Hunt Ocean Renewable (TRL 4 System) - THOR's Power Method for Hydrokinetic Devices Turner Hunt Ocean Renewable (TRL 4 System) - THOR's Power Method for Hydrokinetic Devices...

245

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

Open Energy Info (EERE)

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

246

DOE and Partners Demonstrate Mobile Geothermal Power System at...  

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

Partners Demonstrate Mobile Geothermal Power System at 2009 Geothermal Energy Expo DOE and Partners Demonstrate Mobile Geothermal Power System at 2009 Geothermal Energy Expo...

247

Use of fuel cells for improving on-site emergency power availability and reliability ad nuclear power plants  

E-Print Network [OSTI]

To assure safe shutdown of a nuclear power plant, there must always be reliable means of decay heat removal provided, in last resort, by an Emergency Core Cooling System (ECCS). Currently the majority of nuclear power ...

Akkaynak, Derya

2005-01-01T23:59:59.000Z

248

Coal Power Systems strategic multi-year program plans  

SciTech Connect (OSTI)

The Department of Energy's (DOE) Office of Fossil Energy (FE), through the Coal and Power Systems (C and PS) program, funds research to advance the scientific knowledge needed to provide new and improved energy technologies; to eliminate any detrimental environmental effects of energy production and use; and to maintain US leadership in promoting the effective use of US power technologies on an international scale. Further, the C and PS program facilitates the effective deployment of these technologies to maximize their benefits to the Nation. The following Strategic Plan describes how the C and PS program intends to meet the challenges of the National Energy Strategy to: (1) enhance American's energy security; (2) improve the environmental acceptability of energy production and use; (3) increase the competitiveness and reliability of US energy systems; and (4) ensure a robust US energy future. It is a plan based on the consensus of experts and managers from FE's program offices and the National Energy Technology Laboratory (NETL).

None

2001-02-01T23:59:59.000Z

249

Development of Improved Burnable Poisons for Commercial Nuclear Power Reactors  

SciTech Connect (OSTI)

Burnable poisons are used in nuclear reactors to produce a more level distribution of power in the reactor core and to reduce to necessity for a large control system. An ideal burnable poison would burn at the same rate as the fuel. In this study, separation of neutron-absorbing isotopes was investigated in order to eliminate isotopes that remain as absorbers at the end of fuel life, thus reducing useful fuel life. The isotopes Gd-157, Dy-164, and Er-167 were found to have desirable properties. These isotopes were separated from naturally occurring elements by means of plasma separation to evaluate feasibility and cost. It was found that pure Gd-157 could save approximately $6 million at the end of four years. However, the cost of separation, using the existing facility, made separation cost- ineffective. Using a magnet with three times the field strength is expected to reduce the cost by a factor of ten, making isotopically separated burnable poisons a favorable method of increasing fuel life in commercial reactors, in particular Generation-IV reactors. The project also investigated various burnable poison configurations, and studied incorporation of metallic burnable poisons into fuel cladding.

M. L. Grossbeck J-P.A. Renier Tim Bigelow

2003-09-30T23:59:59.000Z

250

ANL Software Improves Wind Power Forecasting | Department of...  

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

principal investigator for the project. For wind power point forecasting, ARGUS PRIMA trains a neural network using data from weather forecasts, observations, and actual wind...

251

Efficiency Improvement in an Over the Road Diesel Powered Engine...  

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

and potential efficiency enhancement deer08schock.pdf More Documents & Publications Thermoelectric Conversion of Waste Heat to Electricity in an IC Engine Powered Vehicle...

252

Fuel consumption of a vehicle with power split CVT system  

Science Journals Connector (OSTI)

Continuously variable transmissions have made notable progress, especially in the automotive industry, in recent years. In this work, we study the performance of a mid passenger car provided with an original Power Split CVT (PS-CVT) system. The main advantage of the proposed solution is to improve the efficiency of the CVT by means of a power flow without recirculation using two separate phases of operation. By means of a simulation model we evaluate the vehicle's fuel consumption with the hypothesis to consider the value of transmission ratio speed that minimises the specific fuel consumption. Furthermore the PS-CVT performance is compared with that of traditional CVT.

Giacomo Mantriota

2005-01-01T23:59:59.000Z

253

A Multiscale Wind and Power Forecast System for Wind Farms  

Science Journals Connector (OSTI)

Abstract A large scale introduction of wind energy in power sector causes a number of challenges for electricity market and wind farm operators who will have to deal with the variability and uncertainty in the wind power generation in their scheduling and trading decisions. Numerical wind power forecasting has been identified as an important tool to address the increasing variability and uncertainty and to more efficiently operate power systems with large wind power penetration. It has been observed that even when the wind magnitude and direction recorded at a wind mast are the same, the corresponding energy productions can vary significantly. In this work we try to introduce improvements by developing a more accurate wind forecast system for a complex terrain. The system has been operational for eight months for the Bessaker Wind Farm located in the middle part of Norway in a very complex terrain. Operational power curves have also been derived from data analysis. Although the methodology explained has been developed for an onshore wind farm, it can very well be utilized in an offshore context also.

Adil Rasheed; Jakob Kristoffer Süld; Trond Kvamsdal

2014-01-01T23:59:59.000Z

254

Accelrate Power Systems | Open Energy Information  

Open Energy Info (EERE)

Accelrate Power Systems Accelrate Power Systems Jump to: navigation, search Name Accelrate Power Systems Place Vancouver, British Columbia, Canada Zip V6E 4G1 Product High Speed Battery Charger Technology. Coordinates 49.26044°, -123.114034° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":49.26044,"lon":-123.114034,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

255

INI Power Systems | Open Energy Information  

Open Energy Info (EERE)

INI Power Systems INI Power Systems Jump to: navigation, search Name INI Power Systems Place Cary, North Carolina Zip 27513 Product Direct methanol fuel cells targeted at the portable electronics marketplace. Coordinates 35.78933°, -78.781169° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":35.78933,"lon":-78.781169,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

256

Hex Power System | Open Energy Information  

Open Energy Info (EERE)

Hex Power System Hex Power System Jump to: navigation, search Name Hex Power System Place Seoul, Korea (Republic) Zip 152-780 Sector Solar Product Main business in manufacturing solar inverters. Coordinates 37.557121°, 126.977379° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.557121,"lon":126.977379,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

257

Radiation beam calorimetric power measurement system  

DOE Patents [OSTI]

A radiation beam calorimetric power measurement system for measuring the average power of a beam such as a laser beam, including a calorimeter configured to operate over a wide range of coolant flow rates and being cooled by continuously flowing coolant for absorbing light from a laser beam to convert the laser beam energy into heat. The system further includes a flow meter for measuring the coolant flow in the calorimeter and a pair of thermistors for measuring the temperature difference between the coolant inputs and outputs to the calorimeter. The system also includes a microprocessor for processing the measured coolant flow rate and the measured temperature difference to determine the average power of the laser beam.

Baker, John (Livermore, CA); Collins, Leland F. (Pleasanton, CA); Kuklo, Thomas C. (Ripon, CA); Micali, James V. (Dublin, CA)

1992-01-01T23:59:59.000Z

258

Northern Power Systems Inc | Open Energy Information  

Open Energy Info (EERE)

Northern Power Systems Inc Northern Power Systems Inc Place Waitsfield, Vermont Zip 5648 Sector Wind energy Product Vermont-based wind energy company that designs, builds, installs and maintains power generation systems. Coordinates 44.184296°, -72.838898° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":44.184296,"lon":-72.838898,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

259

Dynamic model order reduction for shipboard integrated power systems  

Science Journals Connector (OSTI)

The shipboard integrated power system is modeled by a system of differential-algebraic equations with dynamics having time constants varying from fractions of a second to several minutes. Control and simulation of naval shipboard power systems for different ... Keywords: electric ship, integrated power system, model order reduction, shipboard power system, singular perturbation

Sudipta Lahiri; Dagmar Niebur; Harry Kwatny; Gaurav Bajpai

2009-07-01T23:59:59.000Z

260

title Life Cycle Assessment of Electric Power Systems  

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

Life Cycle Assessment of Electric Power Systems Life Cycle Assessment of Electric Power Systems journal Annual Review of Environment and Resources volume year month abstract p The application of life cycle assessment LCA to electric power EP technologies is a vibrant research pursuit that is likely to continue as the world seeks ways to meet growing electricity demand with reduced environmental and human health impacts While LCA is an evolving methodology with a number of barriers and challenges to its effective use LCA studies to date have clearly improved our understanding of the life cycle energy GHG emissions air pollutant emissions and water use implications of EP technologies With continued progress LCA offers promise for assessing and comparing EP technologies in an analytically thorough and environmentally holistic manner for more robust deployment

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


261

Maximizing efficiency of solar-powered systems by load matching  

Science Journals Connector (OSTI)

Solar power is an important source of renewable energy for many low-power systems. Matching the power consumption level with the supply level can make a great difference in the efficiency of power utilization. This paper proposes a source-tracking power ... Keywords: load matching, photovoltaics, power management, power model, solar energy, solar-aware

Dexin Li; Pai H. Chou

2004-08-01T23:59:59.000Z

262

Power System Equipment Module Test Project  

SciTech Connect (OSTI)

The technology of electric power generation when applying the binary process to hydrothermal resources had not yet been demonstrated in the United States. Accordingly, on November 10, 1977, the Electric Power Research Institute and the Department of Energy, acting through the Lawrence Berkeley Laboratory, agreed to cofund the Power System Equipment Module Test Project. The Power System Equipment Module Test Project consisted of a field test program to accomplish the objectives listed below while heating hydrocarbon fluids to above their critical points, expanding these fluids, and subsequently, condensing them below their critical points: (1) Verify the performance of state-of-the-art heat exchangers in geothermal service; (2) Verify the heat exchangers' performance heating either selected pure light hydrocarbons or selected mixtures of light hydrocarbons in the vicinity of their respective critical pressures and temperatures; (3) Establish overall heat transfer coefficients that might be used for design of commercial-size geothermal power plants using the same geothermal brine and light hydrocarbon working fluids; (4) Perform and investigate the above under representative fluid operating conditions during which the production wells would be pumped. The project was accomplished by diverting approximately 200 gpm of the flow from one of Magma Power Company's geothermal wells in the East Mesa Geothermal Field. After the heat was removed from the geothermal brine flow, the cooled flow was returned to Magma Power Company and recombined with the main brine stream for disposal by reinjection. Approximately five thermal megawatts was transferred from geothermal brine to hydrocarbon working fluids in a closed system. This heat was removed from the working fluids in a condenser and subsequently rejected to the environment by a wet cooling tower. The thermodynamic performance of both the working fluids and the system components was measured during the test program to achieve the project's objectives.

Schilling, J.R.

1980-12-01T23:59:59.000Z

263

High Altitude Wind Power Systems: A Survey on Flexible Power Kites Mariam Ahmed*  

E-Print Network [OSTI]

High Altitude Wind Power Systems: A Survey on Flexible Power Kites Mariam Ahmed* Grenoble wind power using a kite-based system, and the proposed structures *Corresponding author Mariam.AHMED@g2

Boyer, Edmond

264

Power system security enhancement through effective allocation, control and integration of demand response program and FACTS devices.  

E-Print Network [OSTI]

??This thesis is devoted to the development of a new approach for using the FACTS devices and demand response programs to improve the power system… (more)

Yousefi, Ashkan

2013-01-01T23:59:59.000Z

265

Life-Cycle Assessment of Electric Power Systems  

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

Life-Cycle Assessment of Electric Power Systems Life-Cycle Assessment of Electric Power Systems Title Life-Cycle Assessment of Electric Power Systems Publication Type Journal Article Year of Publication 2013 Authors Masanet, Eric R., Yuan Chang, Anand R. Gopal, Peter H. Larsen, William R. Morrow, Roger Sathre, Arman Shehabi, and Pei Zhai Journal Annual Review of Environment and Resources Volume 38 Date Published 2013 Keywords electricity, energy policy, environmental analysis, life-cycle impact, life-cycle inventory Abstract The application of life-cycle assessment (LCA) to electric power (EP) technologies is a vibrant research pursuit that is likely to continue as the world seeks ways to meet growing electricity demand with reduced environmental and human health impacts. While LCA is an evolving methodology with a number of barriers and challenges to its effective use, LCA studies to date have clearly improved our understanding of the life-cycle energy, GHG emissions, air pollutant emissions, and water use implications of EP technologies. With continued progress, LCA offers promise for assessing and comparing EP technologies in an analytically-thorough and environmentally-holistic manner for more robust deployment decisions. This article summarizes: (1) major challenges in applying LCA to EP technologies thus far, (2) LCA results to date on the various impacts of EP technologies, and (3) opportunities for improving LCAs as applied to EP technologies moving forward.

266

InPower Systems | Open Energy Information  

Open Energy Info (EERE)

InPower Systems InPower Systems Jump to: navigation, search Name InPower Systems Place Carbondale, Colorado Zip 81623 Sector Geothermal energy, Solar Product InPower Systems designs, installs and maintains turn-key solar, solar thermal, geothermal and energy smart systems in homes and businesses in Colorado. Coordinates 41.573959°, -75.501361° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.573959,"lon":-75.501361,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

267

Innovative Power Systems | Open Energy Information  

Open Energy Info (EERE)

Power Systems Power Systems Jump to: navigation, search Logo: Innovative Power Systems Name Innovative Power Systems Address 1413 Hunting Valley Road Place St. Paul, Minnesota Zip 55108 Sector Solar Product solar and wind electric systems Year founded 1991 Phone number 612-623-3246 Website http://www.ips-solar.com/Index Coordinates 44.98387°, -93.204646° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":44.98387,"lon":-93.204646,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

268

LED lamp power management system and method  

DOE Patents [OSTI]

An LED lamp power management system and method including an LED lamp having an LED controller 58; a plurality of LED channels 60 operably connected to the LED controller 58, each of the plurality of LED channels 60 having a channel switch 62 in series with at least one shunted LED circuit 83, the shunted LED circuit 83 having a shunt switch 68 in parallel with an LED source 80. The LED controller 58 reduces power loss in one of the channel switch 62 and the shunt switch 68 when LED lamp electronics power loss (P.sub.loss) exceeds an LED lamp electronics power loss limit (P.sub.lim); and each of the channel switches 62 receives a channel switch control signal 63 from the LED controller 58 and each of the shunt switches 68 receives a shunt switch control signal 69 from the LED controller 58.

Gaines, James; Clauberg, Bernd; Van Erp, Josephus A. M.

2013-03-19T23:59:59.000Z

269

The Applied Mathematics for Power Systems (AMPS)  

SciTech Connect (OSTI)

Increased deployment of new technologies, e.g., renewable generation and electric vehicles, is rapidly transforming electrical power networks by crossing previously distinct spatiotemporal scales and invalidating many traditional approaches for designing, analyzing, and operating power grids. This trend is expected to accelerate over the coming years, bringing the disruptive challenge of complexity, but also opportunities to deliver unprecedented efficiency and reliability. Our Applied Mathematics for Power Systems (AMPS) Center will discover, enable, and solve emerging mathematics challenges arising in power systems and, more generally, in complex engineered networks. We will develop foundational applied mathematics resulting in rigorous algorithms and simulation toolboxes for modern and future engineered networks. The AMPS Center deconstruction/reconstruction approach 'deconstructs' complex networks into sub-problems within non-separable spatiotemporal scales, a missing step in 20th century modeling of engineered networks. These sub-problems are addressed within the appropriate AMPS foundational pillar - complex systems, control theory, and optimization theory - and merged or 'reconstructed' at their boundaries into more general mathematical descriptions of complex engineered networks where important new questions are formulated and attacked. These two steps, iterated multiple times, will bridge the growing chasm between the legacy power grid and its future as a complex engineered network.

Chertkov, Michael [Los Alamos National Laboratory

2012-07-24T23:59:59.000Z

270

A Method of Decreasing Power Output Fluctuation of Solar Chimney Power Generating Systems  

Science Journals Connector (OSTI)

Severe fluctuation of power output is a common problem in the various generating systems of renewable energies. The hybrid energy storage system with water and soil is adopted to decrease the fluctuation of solar chimney power generating systems in the ... Keywords: Solar chimney power generating system, power output fluctuation, hybrid energy storage layer, collector, chimney

Meng Fanlong; Ming Tingzhen; Pan Yuan

2011-01-01T23:59:59.000Z

271

Powered Ankle-Foot Prosthesis for the Improvement of Amputee Walking Economy  

E-Print Network [OSTI]

Powered Ankle-Foot Prosthesis for the Improvement of Amputee Walking Economy by Samuel Kwok-Wai Au LIBRARIES #12;#12;Powered Ankle-Foot Prosthesis for the Improvement of Amputee Walking Economy by Samuel The human ankle provides a significant amount of net positive work during the stance period of walking

Herr, Hugh

272

Enhanced IGCC regulatory control and coordinated plant-wide control strategies for improving power ramp rates  

SciTech Connect (OSTI)

As part of ongoing R&D activities at the National Energy Technology Laboratory’s (NETL) Advanced Virtual Energy Simulation Training & Research (AVESTAR™) Center, this paper highlights strategies for enhancing low-level regulatory control and system-wide coordinated control strategies implemented in a high-fidelity dynamic simulator for an Integrated Gasification Combined Cycle (IGCC) power plant with carbon capture. The underlying IGCC plant dynamic model contains 20 major process areas, each of which is tightly integrated with the rest of the power plant, making individual functionally-independent processes prone to routine disturbances. Single-loop feedback control although adequate to meet the primary control objective for most processes, does not take into account in advance the effect of these disturbances, making the entire power plant undergo large offshoots and/or oscillations before the feedback action has an opportunity to impact control performance. In this paper, controller enhancements ranging from retuning feedback control loops, multiplicative feed-forward control and other control techniques such as split-range control, feedback trim and dynamic compensation, applicable on various subsections of the integrated IGCC plant, have been highlighted and improvements in control responses have been given. Compared to using classical feedback-based control structure, the enhanced IGCC regulatory control architecture reduces plant settling time and peak offshoots, achieves faster disturbance rejection, and promotes higher power ramp-rates. In addition, improvements in IGCC coordinated plant-wide control strategies for “Gasifier-Lead”, “GT-Lead” and “Plantwide” operation modes have been proposed and their responses compared. The paper is concluded with a brief discussion on the potential IGCC controller improvements resulting from using advanced process control, including model predictive control (MPC), as a supervisory control layer.

Mahapatra, P.; Zitney, S.

2012-01-01T23:59:59.000Z

273

Intelligent E-Learning System for Training Power Systems Operators  

Science Journals Connector (OSTI)

Training of operators has become an important problem to be faced by power systems: updating knowledge and skills. An operator must comprehend the physical operation of the process and must be skilled ... . We ar...

Liliana Argotte; Yasmin Hernandez…

2011-01-01T23:59:59.000Z

274

Princeton Plasma Physics Lab - Power systems  

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

systems The systems, such as systems The systems, such as fusion power plants, that would generate electricity from fusion. en Celebrating the 20th anniversary of the tritium shot heard around the world http://www.pppl.gov/news/2013/12/celebrating-20th-anniversary-tritium-shot-heard-around-world-2

Tensions rose in the U.S. Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL) as the seconds counted down. At stake was the first crucial test of a high-powered mixture of fuel for producing fusion energy. As the control-room clock reached "zero," a flash of light on a closed-circuit television monitor marked a historic achievement:

275

Improving Steam System Performance: A Sourcebook for Industry, Second Edition  

Broader source: Energy.gov [DOE]

This sourcebook is designed to provide steam system users with a reference that describes the basic steam system components, outlines opportunities for energy and performance improvements, and discusses the benefits of a systems approach in identifying and implementing these improvement opportunities. The sourcebook is divided into three main sections: steam system basics, performance improvement opportunities, and where to find help.

276

Application of Improved Grey Model in Long-term Load Forecasting of Power Engineering  

Science Journals Connector (OSTI)

Grey model is usually been used for long-term load forecasting in power engineering, but it has significant limitations. If the moving average method and Markov model are connected with grey model, the accuracy of this improved grey model used for long-term load forecasting in power engineering can be effectively increased. In this paper, ordinary grey model and improved grey model are all chosen and used for long-term power load forecasting in power engineering, and the power load data of Qingdao in the past decade is selected for the analysis. The result of the analysis shows that the accuracy of improved grey model is significant higher than ordinary model, so the improved grey model can be used for long-term load forecasting in power engineering.

Junjie Kang; Huijuan Zhao

2012-01-01T23:59:59.000Z

277

Powered Ankle–Foot Prosthesis Improves Walking Metabolic Economy  

E-Print Network [OSTI]

At moderate to fast walking speeds, the human ankle provides net positive work at high-mechanical-power output to propel the body upward and forward during the stance period. On the contrary, conventional ankle-foot ...

Au, Samuel K.

278

Design of isolated renewable hybrid power systems  

SciTech Connect (OSTI)

Isolated electrical power generating units can be used as an economically viable alternative to electrify remote villages where grid extension is not feasible. One of the options for building isolated power systems is by hybridizing renewable power sources like wind, solar, micro-hydro, etc. along with appropriate energy storage. A method to optimally size and to evaluate the cost of energy produced by a renewable hybrid system is proposed in this paper. The proposed method, which is based on the design space approach, can be used to determine the conditions for which hybridization of the system is cost effective. The simple and novel methodology, proposed in this paper, is based on the principles of process integration. It finds the minimum battery capacity when the availability and ratings of various renewable resources as well as load demand are known. The battery sizing methodology is used to determine the sizing curve and thereby the feasible design space for the entire system. Chance constrained programming approach is used to account for the stochastic nature of the renewable energy resources and to arrive at the design space. The optimal system configuration in the entire design space is selected based on the lowest cost of energy, subject to a specified reliability criterion. The effects of variation of the specified system reliability and the coefficient of correlation between renewable sources on the design space, as well as the optimum configuration are also studied in this paper. The proposed method is demonstrated by designing an isolated power system for an Indian village utilizing wind-solar photovoltaic-battery system. (author)

Sreeraj, E.S.; Chatterjee, Kishore [Department of Electrical Engineering, Indian Institute of Technology Bombay, Mumbai 400 076 (India); Bandyopadhyay, Santanu [Department of Energy Science and Engineering, Indian Institute of Technology Bombay, Mumbai 400 076 (India)

2010-07-15T23:59:59.000Z

279

Crowd-Powered Systems Michael Scott Bernstein  

E-Print Network [OSTI]

Crowd-Powered Systems by Michael Scott Bernstein S.M., Massachusetts Institute of Technology, 2008 Scott Bernstein Submitted to the Department of Electrical Engineering and Computer Science on May 23 and Rob Miller, always willing to listen to crazy ideas; · Terry Winograd, Scott Klemmer, Bj¨orn Hartmann

Pratt, Vaughan

280

Merchant vessel advanced power systems. Final report  

SciTech Connect (OSTI)

This study identifies and evaluates potential highly advanced propulsion power plants which may have marine applications beyond the year 2000. Various promising current technologies were screened and an evaluation of each plant concept and its suitability for use as a merchant ship propulsion system is contained in this report.

Baham, G.J.; Swensson, G.

1982-01-01T23:59:59.000Z

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


281

ASSESSING POWER PLANT COOLING WATER INTAKE SYSTEM  

E-Print Network [OSTI]

ASSESSING POWER PLANT COOLING WATER INTAKE SYSTEM ENTRAINMENT IMPACTS Prepared For: California, Center for Ocean Health, Long Marine Lab GREGOR CAILLIET, Moss Landing Marine Laboratories DAVID MAYER be obvious that large studies like these require the coordinated work of many people. We would first like

282

Value of Improved Wind Power Forecasting in the Western Interconnection (Poster)  

SciTech Connect (OSTI)

Wind power forecasting is a necessary and important technology for incorporating wind power into the unit commitment and dispatch process. It is expected to become increasingly important with higher renewable energy penetration rates and progress toward the smart grid. There is consensus that wind power forecasting can help utility operations with increasing wind power penetration; however, there is far from a consensus about the economic value of improved forecasts. This work explores the value of improved wind power forecasting in the Western Interconnection of the United States.

Hodge, B.

2013-12-01T23:59:59.000Z

283

An Improved AMG-based Method for Fast Power Grid Analysis Cheng Zhuo, Jiang Hu1  

E-Print Network [OSTI]

An Improved AMG-based Method for Fast Power Grid Analysis Cheng Zhuo, Jiang Hu1 and Kangsheng Chen and verification. Meanwhile, the huge size of power grid requires its analysis to be fast and highly scalable. Algebraic multigrid (AMG) has been recognized as a promising approach for fast power grid analysis. We

Hu, Jiang

284

Distributed Battery Control to Improve Peak Power Shaving Efficiency in Data Centers  

E-Print Network [OSTI]

Rack PDU BackupMain Bus-type power network Utility Diesel Generator ATS PDU Server Rack Server RackDistributed Battery Control to Improve Peak Power Shaving Efficiency in Data Centers Baris Aksanli, Eddie Pettis and Tajana S. Rosing UCSD, Google Stored energy in batteries can be used to cap peak power

Simunic, Tajana

285

Altering Anode Thickness To Improve Power Production in Microbial Fuel Cells with Different Electrode Distances  

E-Print Network [OSTI]

Altering Anode Thickness To Improve Power Production in Microbial Fuel Cells with Different ABSTRACT: A better understanding of how anode and separator physical properties affect power production the cathode can limit power production by bacteria on the anode when using closely spaced electrodes

286

Power Systems Engineering Research Center Dennis Ray Ward Jewell  

E-Print Network [OSTI]

Power Systems Engineering Research Center Dennis Ray Ward Jewell Executive Director, Power Systems an overview of the Power Systems Engineering Research Center (PSERC), a National Science Foundation Industry and ongoing projects in each of these stems will be outlined. INTRODUCTION Current electric-power systems

287

Distribution of Wind Power Forecasting Errors from Operational Systems (Presentation)  

SciTech Connect (OSTI)

This presentation offers new data and statistical analysis of wind power forecasting errors in operational systems.

Hodge, B. M.; Ela, E.; Milligan, M.

2011-10-01T23:59:59.000Z

288

A Supply-Demand Model Based Scalable Energy Management System for Improved Energy  

E-Print Network [OSTI]

the dependency of an electronic system to primary energy sources (i.e. AC power or battery). For reliable energy generation and consumption parameters. The system uses economics inspired supply-demand modelA Supply-Demand Model Based Scalable Energy Management System for Improved Energy Utilization

Bhunia, Swarup

289

Technology verification phase. Dynamic isotope power system. Final report  

SciTech Connect (OSTI)

The Phase I requirements of the Kilowatt Isotope Power System (KIPS) program were to make a detailed Flight System Conceptual Design (FSCD) for an isotope fueled organic Rankine cycle power system and to build and test a Ground Demonstration System (GDS) which simulated as closely as possible the operational characteristics of the FSCD. The activities and results of Phase II, the Technology Verification Phase, of the program are reported. The objectives of this phase were to increase system efficiency to 18.1% by component development, to demonstrate system reliability by a 5000 h endurance test and to update the flight system design. During Phase II, system performance was improved from 15.1% to 16.6%, an endurance test of 2000 h was performed while the flight design analysis was limited to a study of the General Purpose Heat Source, a study of the regenerator manufacturing technique and analysis of the hardness of the system to a laser threat. It was concluded from these tests that the GDS is basically prototypic of a flight design; all components necessary for satisfactory operation were demonstrated successfully at the system level; over 11,000 total h of operation without any component failure attested to the inherent reliability of this type of system; and some further development is required, specifically in the area of performance. (LCL)

Halsey, D.G.

1982-03-10T23:59:59.000Z

290

NREL: Concentrating Solar Power Research - Systems Analysis  

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

Systems Analysis Systems Analysis Featured Resource Learn more about NREL's capabilities in modeling and analysis of CSP Systems. NREL and other national laboratories support U.S. Department of Energy (DOE) systems analysis activities to evaluate and validate the cost, performance, durability, and grid penetration impacts for concentrating solar power (CSP) technologies. DOE's systems analysis program focuses on the greatest opportunities for impact, based on estimates of the current and future costs of CSP plants, subsystems, and components. Opportunities and Potential Impact The DOE SunShot Initiative to reduce the installed cost of solar energy systems by 75% by the end of the decade will require low-cost configurations that are easy to integrate into the electric grid. Systems

291

IMPROVING THE ENERGY EFFICIENCY OF A MID-SIZE POWER PLANT BY REDUCTION IN AUXILIARY POWER AND IMPROVED HEAT TRANSFER.  

E-Print Network [OSTI]

??This study incorporates the potential use of Variable Frequency Drives on various motors as well as areas of improved heat transfer in an older, mid-sized… (more)

Green, Jeffrey Andrew

2014-01-01T23:59:59.000Z

292

TO APPEAR IN IEEE TRANSACTIONS ON POWER SYSTEMS 1 Vulnerability Assessment of Cybersecurity for  

E-Print Network [OSTI]

TO APPEAR IN IEEE TRANSACTIONS ON POWER SYSTEMS 1 Vulnerability Assessment of Cybersecurity Govindarasu, Member, IEEE Abstract--Vulnerability assessment is a requirement of NERC's cybersecurity within the substation networks. Countermeasures are identified for improvement of the cybersecurity

Manimaran, Govindarasu

293

Study on the use of VLSI ASIC technology for generic power system computer relay architectures  

E-Print Network [OSTI]

This thesis discusses the feasibility of improving power system computer relay devices using Very Large Scale Integration technology. It outlines the functionality that is required of this equipment A high-level design that attempts to use dedicated...

Faulkner, Kenneth Ray

2012-06-07T23:59:59.000Z

294

Potassium Rankine cycle nuclear power systems for spacecraft and lunar-mass surface power  

SciTech Connect (OSTI)

The potassium Rankine cycle has high potential for application to nuclear power systems for spacecraft and surface power on the moon and Mars. A substantial effort on the development of Rankine cycle space power systems was carried out in the 1960`s. That effort is summarized and the status of the technology today is presented. Space power systems coupling Rankine cycle power conversion to both the SP-100 reactor and thermionic reactors as a combined power cycle are described in the paper.

Holcomb, R.S.

1992-07-01T23:59:59.000Z

295

Vehicle System Impacts of Fuel Cell System Power Response Capability  

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

- 01 - 1959 - 01 - 1959 Vehicle System Impacts of Fuel Cell System Power Response Capability Tony Markel and Keith Wipke National Renewable Energy Laboratory Doug Nelson Virginia Polytechnic University and State Institute Copyright © 2002 Society of Automotive Engineers, Inc. ABSTRACT The impacts of fuel cell system power response capability on optimal hybrid and neat fuel cell vehicle configurations have been explored. Vehicle system optimization was performed with the goal of maximizing fuel economy over a drive cycle. Optimal hybrid vehicle design scenarios were derived for fuel cell systems with 10 to 90% power transient response times of 0, 2, 5, 10, 20, and 40 seconds. Optimal neat fuel cell vehicles where generated for responses times of 0, 2, 5, and 7

296

Filter system cost comparison for IGCC and PFBC power systems  

SciTech Connect (OSTI)

A cost comparison was conducted between the filter systems for two advanced coal-based power plants. The results from this study are presented. The filter system is based on a Westinghouse advanced particulate filter concept, which is designed to operate with ceramic candle filters. The Foster Wheeler second-generation 453 MWe (net) pressurized fluidized-bed combustor (PFBC) and the KRW 458 MWe (net) integrated gasification combined cycle (IGCC) power plants are used for the comparison. The comparison presents the general differences of the two power plants and the process-related filtration conditions for PFBC and IGCC systems. The results present the conceptual designs for the PFBC and IGCC filter systems as well as a cost summary comparison. The cost summary comparison includes the total plant cost, the fixed operating and maintenance cost, the variable operating and maintenance cost, and the effect on the cost of electricity (COE) for the two filter systems.

Dennis, R.A.; McDaniel, H.M.; Buchanan, T. [and others

1995-12-01T23:59:59.000Z

297

Nuclear power systems for Lunar and Mars exploration  

SciTech Connect (OSTI)

Initial studies of a variety of mission scenarios for the new Space Exploration Initiative, and the technologies necessary to enable or significantly enhance them, have identified the development of advanced space power systems - whether solar, chemical or nuclear - to be of prime importance. Lightweight, compact, reliable power systems for planetary rovers and a variety of surface vehicles, utility surface power, and power for advanced propulsion systems were identified as critical needs for these missions. This paper discusses these mission scenarios, the concomitant power system requirements; the power system options considered and identifies the significant potential benefits of nuclear power for meeting the power needs of the above applications.

Sovie, R.J.; Bozek, J.M.

1994-09-01T23:59:59.000Z

298

Ballard Power Systems | Open Energy Information  

Open Energy Info (EERE)

Ballard Power Systems Ballard Power Systems Address Two Industrial Avenue Place Lowell, Massachusetts Zip 01851 Sector Hydrogen Product Designs and manufactures fuel cell systems Website http://www.ballard.com/ Coordinates 42.6148469°, -71.3226869° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.6148469,"lon":-71.3226869,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

299

Tri Power Systems Inc | Open Energy Information  

Open Energy Info (EERE)

Inc Inc Jump to: navigation, search Logo: Tri Power Systems Inc Name Tri Power Systems Inc Address P.O. Box 1450 Place Idaho Springs, Colorado Zip 80452 Sector Solar Product Design and installation of solar and wind systems for residential and small business Website http://www.tripowersystems.com Coordinates 39.6904464°, -105.6412527° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.6904464,"lon":-105.6412527,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

300

Improving sound propagation modeling for wind power projects  

Science Journals Connector (OSTI)

Sound propagation from wind power projects can be modeled in the same manner as other more common outdoor noisesources but are these models suited to wind turbines' uniquely high source heights operating under high wind conditions and various degrees of terrain ruggedness. In "Propagation Modeling Parameters for Wind Turbines" (K. Kaliski and E. Duncan Proceedings of Institute of Noise ControlEngineers NOISECON 2007) the effects of ground attenuation and various adjustments for wind conditions on sound propagationmodeling were discussed. This paper continues the discussion and explores the accuracy of existing sound propagationmodeling methods for wind power projects including ISO 9613 and other standards. Model data for wind power projects and the implications of various terrain and ground coverage will be discussed.

Eddie Duncan; Kenneth Kaliski

2008-01-01T23:59:59.000Z

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


301

SiC Power MOSFET with Improved Gate Dielectric  

SciTech Connect (OSTI)

In this STTR program, Structured Materials Industries (SMI), and Cornell University are developing novel gate oxide technology, as a critical enabler for silicon carbide (SiC) devices. SiC is a wide bandgap semiconductor material, with many unique properties. SiC devices are ideally suited for high-power, highvoltage, high-frequency, high-temperature and radiation resistant applications. The DOE has expressed interest in developing SiC devices for use in extreme environments, in high energy physics applications and in power generation. The development of transistors based on the Metal Oxide Semiconductor Field Effect Transistor (MOSFET) structure will be critical to these applications.

Sbrockey, Nick M; Tompa, Gary S; Spencer, Michael G; Chandrashekhar, Chandra MVS

2010-08-23T23:59:59.000Z

302

HEMP emergency planning and operating procedures for electric power systems. Power Systems Technology Program  

SciTech Connect (OSTI)

Investigations of the impact of high-altitude electromagnetic pulse (HEMP) on electric power systems and electrical equipment have revealed that HEMP creates both misoperation and failures. These events result from both the early time E{sub 1} (steep-front pulse) component and the late time E{sub 3} (geomagnetic perturbations) component of HEMP. In this report a HEMP event is viewed in terms of its marginal impact over classical power system disturbances by considering the unique properties and consequences of HEMP. This report focuses on system-wide electrical component failures and their potential consequences from HEMP. In particular, the effectiveness of planning and operating procedures for electric systems is evaluated while under the influence of HEMP. This assessment relies on published data and characterizes utilities using the North American Electric Reliability Council`s regions and guidelines to model electric power system planning and operations. Key issues addressed by the report include how electric power systems are affected by HEMP and what actions electric utilities can initiate to reduce the consequences of HEMP. The report also reviews the salient features of earlier HEMP studies and projects, examines technology trends in the electric power industry which are affected by HEMP, characterizes the vulnerability of power systems to HEMP, and explores the capability of electric systems to recover from a HEMP event.

Reddoch, T.W.; Markel, L.C. [Electrotek Concepts, Inc., Knoxville, TN (United States)

1991-12-31T23:59:59.000Z

303

Impact of Wind Power Plants on Voltage and Transient Stability of Power Systems  

SciTech Connect (OSTI)

A standard three-machine, nine-bus wind power system is studied and augmented by a radially connected wind power plant that contains 22 wind turbine generators.

Muljadi, E.; Nguyen, Tony B.; Pai, M. A.

2008-09-30T23:59:59.000Z

304

A study of power electronic building block (PEBB)-based integrated shipboard power systems during reconfiguration  

E-Print Network [OSTI]

power system is required to be a highly reconfigurable system to enhance its survivability and reliability. Reconfiguration is a change in the shipboard power system state for various reasons such as new topology, changing missions and emergencies...

Adediran, Adeoti Taiwo

2004-09-30T23:59:59.000Z

305

System aspects of a Space Nuclear Reactor Power System  

SciTech Connect (OSTI)

Selected systems aspects of a 300 kW nuclear reactor power system for spacecraft have been studied. The approach included examination of two candidate missions and their associated spacecraft, and a number of special topics dealing with the power system design and operation. The missions considered were a reusable orbital transfer vehicle and a space-based radar. The special topics included: power system configuration and scaling, launch vehicle integration, operating altitude, orbital storage, start-up, thawing, control, load following, procedures in case of malfunction, restart, thermal and nuclear radiation to other portions of the spacecraft, thermal stresses between subsystems, boom and cable designs, vibration modes, altitude control, reliability, and survivability. Among the findings are that the stowed length of the power system is important to mission design and that orbital storage for months to years may be needed for missions involving orbital assembly. The power system design evolved during the study and has continued to evolve; the current design differs somewhat from that examined in this paper.

Jaffe, L.; Fujita, T.; Beatty, R.; Bhandari, P.; Chow, E.; Deininger, W.; Ewell, R.; Grossman, M.; Kia, T.; Nesmith, B.

1988-01-01T23:59:59.000Z

306

Improving Fan System Performance: A Sourcebook for Industry  

Broader source: Energy.gov [DOE]

This sourcebook is designed to provide fan system users with a reference outlining opportunities to improve system performance. It is not intended to be a comprehensive technical text on improving fan systems, but rather a document that makes users aware of potential performance improvements, provides some practical guidelines, and details where the user can find more help.

307

Test report : Princeton power systems prototype energy storage system.  

SciTech Connect (OSTI)

The Department of Energy Office of Electricity (DOE/OE), Sandia National Laboratory (SNL) and the Base Camp Integration Lab (BCIL) partnered together to incorporate an energy storage system into a microgrid configured Forward Operating Base to reduce the fossil fuel consumption and to ultimately save lives. Energy storage vendors will be sending their systems to SNL Energy Storage Test Pad (ESTP) for functional testing and then to the BCIL for performance evaluation. The technologies that will be tested are electro-chemical energy storage systems comprised of lead acid, lithium-ion or zinc-bromide. Princeton Power Systems has developed an energy storage system that utilizes lithium ion phosphate batteries to save fuel on a military microgrid. This report contains the testing results and some limited analysis of performance of the Princeton Power Systems Prototype Energy Storage System.

Rose, David Martin; Schenkman, Benjamin L.; Borneo, Daniel R.

2013-08-01T23:59:59.000Z

308

Improved System Performance and Reduced Cost of a Fuel Reformer...  

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

Improved System Performance and Reduced Cost of a Fuel Reformer, LNT, and SCR Aftertreatment System Meeting Emissions Useful Life Requirement Damodara Poojary, Jacques Nicole,...

309

An Improvement of Diesel PM and NOx Reduction System | Department...  

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

& Publications Development on simultaneous reduction system of NOx and PM from a diesel engine An Improvement of Diesel PM and NOx Reduction System New Diesel Emissions...

310

Improving Process Heating System Performance: A Sourcebook for...  

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

Process Heating System Performance: A Sourcebook for Industry, Second Edition Improving Process Heating System Performance: A Sourcebook for Industry, Second Edition This...

311

Proton Power Systems Plc | Open Energy Information  

Open Energy Info (EERE)

Proton Power Systems Plc Proton Power Systems Plc Jump to: navigation, search Name Proton Power Systems Plc Place Starnberg, Bavaria, Germany Zip D-82319 Sector Hydro, Hydrogen Product UK-based parent company of Proton Motor GmbH, which operates in Germany. The Company is engaged in developing hydrogen fuel cells and fuel cell hybrid systems. Coordinates 47.99959°, 11.342172° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":47.99959,"lon":11.342172,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

312

Project Profile: Solar Power Tower Improvements with the Potential...  

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

with its baseline solar tower configuration, which is well represented by the System Advisor Model template for a 100-MW solar tower. This mature system-level design is the...

313

SunPower Corporation Systems formerly PowerLight | Open Energy Information  

Open Energy Info (EERE)

Corporation Systems formerly PowerLight Corporation Systems formerly PowerLight Jump to: navigation, search Name SunPower Corporation, Systems (formerly PowerLight) Place Berkeley, California Zip 94702 Sector Efficiency, Services, Solar Product US-based designer, manufacturer and installer of grid-connected solar electric systems and energy efficiency services, including solar tracking devices, in the US. References SunPower Corporation, Systems (formerly PowerLight)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. SunPower Corporation, Systems (formerly PowerLight) is a company located in Berkeley, California . References ↑ "SunPower Corporation, Systems (formerly PowerLight)" Retrieved from

314

A Solar Power System for High Altitude Airships.  

E-Print Network [OSTI]

??This research is intended to produce a power system suitable for an aerostat operating at 67,500 ft and powered only by solar energy. A battery… (more)

Mei, Qiang

2011-01-01T23:59:59.000Z

315

NETL: Coal & Power Systems - Contacts  

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

& Power Systems & Power Systems RD&D Clean Coal Program Vision An energy-secure United States that can tap the full potential of all its energy resources, including coal. Mission Ensure the availability of ultra-clean (near-zero emissions), abundant, low cost domestic energy from coal to fuel economic prosperity, strengthen energy security, and enhance environmental quality. NETL manages an RD&D portfolio that is designed to remove environmental concerns over the future use of coal by developing revolutionary, near-zero-emissions coal technology. In partnership with the private sector, technology developments are focused on maximizing efficiency and environmental performance while driving down the cost for these new technologies. RD&D efforts focus on near-term developments to enhance the capabilities of

316

Sun powers Libya cathodic-protection system  

SciTech Connect (OSTI)

Well castings and part of the main 300-mile-long, 32-in diameter pipeline from Sarir to Tobruk are cathodically protected by solar power, which prevents galvanic action by applying an electric direct current of appropriate magnitude and polarity to the steel structures. They then act as cathodes and become the recipients of metallic ions. At each cathodic-protection station, the solar-generaor system consists of solar-panel arrays, electronic controls, and batteries.

Currer, G.W.

1982-03-22T23:59:59.000Z

317

Vapor Power Systems MAE 4263 Final Exam  

E-Print Network [OSTI]

Vapor Power Systems MAE 4263 Final Exam Wednesday, May 5, 2004 Prof. P.M. Moretti Key Instructions, then think, then write! 1. What is the dewpoint of the exhaust of your car, if the gasoline consists2 so that the mole fraction of water vapor is yH2 O = 9 9 + 8 + 47 = 0:14063 pH2 O = 0:14063 14

318

Quality assurance program for isotopic power systems  

SciTech Connect (OSTI)

This report summarizes the Sandia National Laboratories Quality Assurance Program that applies to non-weapon (reimbursable) Radioisotopic Thermoelectric Generators. The program has been implemented over the past 16 years on power supplies used in various space and terrestrial systems. The quality assurance (QA) activity of the program is in support of the Department of Energy, Office of Space Nuclear Projects. Basic elements of the program are described in the report and examples of program decumentation are presented.

Hannigan, R.L.; Harnar, R.R.

1982-12-01T23:59:59.000Z

319

Space system concepts: Modes of power supply to earth  

Science Journals Connector (OSTI)

Some restrictions on the use of power from space and possibilities for uninterrupted power supply are discussed for a variety of space?based systems. Only solar power system with power transmission to Earth by microwave beams are considered. Primary attention is paid to restrictions on the realization of various system rectenna allocation and to conditions for utilization of power from space in the terrestrial energy systems of different world regions.

Lev. S. Belyaev; Sergey P. Fillippov; Yuri N. Rudenko

1995-01-01T23:59:59.000Z

320

Wind to Power Systems | Open Energy Information  

Open Energy Info (EERE)

Wind to Power Systems Wind to Power Systems Place Madrid, Spain Zip 28108 Sector Wind energy Product Wind to Power Systems designs, supplies and installs a device designed for use in wind turbines to provide fault ride-through capability, enabling wind turbines to maintain grid connection during periods of transmission line faults and voltage dips. Coordinates 40.4203°, -3.705774° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.4203,"lon":-3.705774,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

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


321

Proe Power Systems | Open Energy Information  

Open Energy Info (EERE)

Proe Power Systems Proe Power Systems Jump to: navigation, search Name Proe Power Systems Address 5072 Morning Song Dr Place Medina, Ohio Zip 44256-6747 Sector Biofuels, Biomass, Carbon, Renewable Energy Product Research and development;Retail product sales and distribution Phone number 800-315-0084 Website http://www.proepowersystems.co Coordinates 41.18062°, -81.8691039° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.18062,"lon":-81.8691039,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

322

IPS- Industrial Power Systems | Open Energy Information  

Open Energy Info (EERE)

IPS- Industrial Power Systems IPS- Industrial Power Systems Jump to: navigation, search Name IPS- Industrial Power Systems Address 1650 Indianwood Circle Place Maumee, Ohio Zip 43537 Sector Biofuels, Biomass, Buildings, Carbon, Efficiency, Hydro, Solar, Vehicles, Wind energy Product Engineering/architectural/design;Installation; Maintenance and repair; Other:Construction Phone number 419-531-3121 Website http://www.IPSContractor.com Coordinates 41.5867081°, -83.6797736° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.5867081,"lon":-83.6797736,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

323

MSE Power Systems Inc | Open Energy Information  

Open Energy Info (EERE)

MSE Power Systems Inc MSE Power Systems Inc Jump to: navigation, search Name MSE Power Systems Inc Place Albany, New York Zip NY 12205 Sector Services Product Albany-based privately held company active in engineering, procurement, construction management, commissioning and testing services. The firm offers these services to clean energy projects. Coordinates 42.707237°, -89.436378° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.707237,"lon":-89.436378,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

324

Continuous Energy Improvement in Motor Driven Systems  

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

Tools, Advanced Energy, March 2006. 3-11 Ula, Sadrul, Larry E. Birnbaum, and Don Jordan, Energy Efficient Drivepower: An Overview, Bonn- eville Power Administration, Western...

325

Application/architecture power co-optimization for embedded systems powered by renewable sources  

Science Journals Connector (OSTI)

Embedded systems are being built with renewable power sources such as solar cells to replenish the energy of batteries. The renewable power sources have a wide range of efficiency levels that depend on environment parameters and the current drawn from ... Keywords: architectural optimization, load matching, power management, power utilization, renewable power source

Dexin Li; Pai H. Chou

2005-06-01T23:59:59.000Z

326

NREL: TroughNet - Parabolic Trough Power Plant System Technology  

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

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

327

A Design of Marine Propulsion Shaft Power Telemetry System  

Science Journals Connector (OSTI)

In order to achieve the marine shaft power’s dynamic telemetry, on the basis of the analysis of shaft power measurement’s fundamental principles, from both hardware and software, the telemetry system has desig...

Hongyan Hao; Qingshan Ji

2012-01-01T23:59:59.000Z

328

Excise Tax Exemption for Solar- or Wind-Powered Systems  

Broader source: Energy.gov [DOE]

Massachusetts law exempts any "solar or wind powered climatic control unit and any solar or wind powered water heating unit or any other type unit or system powered thereby," that qualifies for the...

329

Operating the Irish Power System with Increased Levels of Wind Power  

E-Print Network [OSTI]

Operating the Irish Power System with Increased Levels of Wind Power Aidan Tuohy, Student Member-- This paper summarises some of the main impacts of large amounts of wind power installed in the island of Ireland. Using results from various studies performed on this system, it is shown that wind power

330

Photo of the Week: Improving Power Plant Technology... in 3-D | Department  

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

Improving Power Plant Technology... in 3-D Improving Power Plant Technology... in 3-D Photo of the Week: Improving Power Plant Technology... in 3-D June 6, 2013 - 12:58pm Addthis This week, Secretary Ernest Moniz experienced the 3-D visualizations at the Consortium for the Advanced Simulation of Light Water Reactors (CASL), one of the Department's Energy Innovation Hubs. The facility, located at Oak Ridge National Laboratory, develops computer models that simulate nuclear power plant operations. The researchers at CASL are developing technology that could accelerate upgrades at existing nuclear plants while improving the plants' reliability and safety. Check out more photos from Secretary Moniz's visit to CASL. | Photo courtesy of Oak Ridge National Laboratory.

331

Portland Company to Receive $1.3 Million to Improve Hydro Power  

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

Portland Company to Receive $1.3 Million to Improve Hydro Power Portland Company to Receive $1.3 Million to Improve Hydro Power Technologies Portland Company to Receive $1.3 Million to Improve Hydro Power Technologies September 15, 2009 - 12:00am Addthis Washington, DC - US Energy Secretary Steven Chu today awarded more than $1.3 million to Ocean Renewable Power Company in Portland, Maine to improve the efficiency, flexibility, and environmental performance of hydroelectric energy. The investment will further the nation's supply of domestic clean hydroelectricity through technological innovation and will advance research to maximize the nation's largest renewable energy source. "Hydropower is our largest source of renewable energy and it can play an even bigger role in the further. These investments will create jobs, cut

332

Power Systems Life Cycle Analysis Tool (Power L-CAT).  

SciTech Connect (OSTI)

The Power Systems L-CAT is a high-level dynamic model that calculates levelized production costs and tracks environmental performance for a range of electricity generation technologies: natural gas combined cycle (using either imported (LNGCC) or domestic natural gas (NGCC)), integrated gasification combined cycle (IGCC), supercritical pulverized coal (SCPC), existing pulverized coal (EXPC), nuclear, and wind. All of the fossil fuel technologies also include an option for including carbon capture and sequestration technologies (CCS). The model allows for quick sensitivity analysis on key technical and financial assumptions, such as: capital, O&M, and fuel costs; interest rates; construction time; heat rates; taxes; depreciation; and capacity factors. The fossil fuel options are based on detailed life cycle analysis reports conducted by the National Energy Technology Laboratory (NETL). For each of these technologies, NETL's detailed LCAs include consideration of five stages associated with energy production: raw material acquisition (RMA), raw material transport (RMT), energy conversion facility (ECF), product transportation and distribution (PT&D), and end user electricity consumption. The goal of the NETL studies is to compare existing and future fossil fuel technology options using a cradle-to-grave analysis. The NETL reports consider constant dollar levelized cost of delivered electricity, total plant costs, greenhouse gas emissions, criteria air pollutants, mercury (Hg) and ammonia (NH3) emissions, water withdrawal and consumption, and land use (acreage).

Andruski, Joel; Drennen, Thomas E.

2011-01-01T23:59:59.000Z

333

Reliability assessment of autonomous power systems incorporating HVDC interconnection links  

SciTech Connect (OSTI)

The objective of this paper is to present an improved computational method for the overall reliability assessment of autonomous power systems that may or may not contain HVdc interconnection links. This is a hybrid method based on a Monte-Carlo simulation sequential approach which incorporates an analytical approach for the reliability modeling of the HVdc transmission links. The developed models and techniques have been implemented into a computer program that can be used to simulate the operational practices and characteristics of the overall system under study efficiently and realistically. A set of reliability indices are calculated for each load-point of interest and the entire system while a set of additional indices is calculated for quantifying the reliability performance of the interconnection links under the specified operating requirements. The analysis of a practical system is also included for a number of studies representing its various operating and design characteristics.

Dialynas, E.N.; Koskolos, N.C. [National Technical Univ., Athens (Greece). Dept. of Electrical and Computer Engineering] [National Technical Univ., Athens (Greece). Dept. of Electrical and Computer Engineering; Agoris, D. [Public Power Corp., Athens (Greece)] [Public Power Corp., Athens (Greece)

1996-01-01T23:59:59.000Z

334

E-Print Network 3.0 - advanced power system Sample Search Results  

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

system Search Powered by Explorit Topic List Advanced Search Sample search results for: advanced power system...

335

E-Print Network 3.0 - auxiliary power system Sample Search Results  

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

system Search Powered by Explorit Topic List Advanced Search Sample search results for: auxiliary power system...

336

E-Print Network 3.0 - autonomous power system Sample Search Results  

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

system Search Powered by Explorit Topic List Advanced Search Sample search results for: autonomous power system...

337

V2G Technology to Improve Wind Power Quality and Stability F. R. Islam and H. R. Pota  

E-Print Network [OSTI]

V2G Technology to Improve Wind Power Quality and Stability F. R. Islam and H. R. Pota Abstract an implementation of V2G technology is proposed here to improve the quality and stability of wind power output

Pota, Himanshu Roy

338

Wind for Schools Project Power System Brief, Wind Powering America Fact Sheet Series  

Wind Powering America (EERE)

Powering America Fact Sheet Series Powering America Fact Sheet Series Energy Efficiency & Renewable Energy Wind for Schools Project Power System Brief Wind for Schools Project Power System Brief Wind for Schools Project Power System Brief This fact sheet provides an overview of the system components of a Wind Powering America Wind for Schools project. Wind Powering America's (WPA's) Wind for Schools project uses a basic system configuration for each school project. The system incorporates a single SkyStream(tm) wind turbine, a 70-ft guyed tower, disconnect boxes at the base of the turbine and at the school, and an interconnection to the school's electrical system. A detailed description of each system component is provided in this document. The local power cooperative or utility should be an integral part of

339

Power Block R&D for CSP Systems  

Broader source: Energy.gov [DOE]

Power plant components and systems for concentrating solar power (CSP) benefit from a mature and well-understood technology found elsewhere in the power generation industry. The SunShot Initiative funds research and development (R&D) on power block and related aspects within the industry, national laboratories and universities to achieve technical targets of power block subsystems.

340

Ris-R-1256(EN) Isolated Systems with Wind Power  

E-Print Network [OSTI]

Risø-R-1256(EN) Isolated Systems with Wind Power Main Report Per Lundsager, Henrik Bindner, Niels 2001 #12;Abstract It is generally expected that wind power could contribute significantly for such applications of wind power has not yet materialised in any substantial scale. Wind power in isolated power

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


341

Fuel processor for fuel cell power system  

DOE Patents [OSTI]

A catalytic organic fuel processing apparatus, which can be used in a fuel cell power system, contains within a housing a catalyst chamber, a variable speed fan, and a combustion chamber. Vaporized organic fuel is circulated by the fan past the combustion chamber with which it is in indirect heat exchange relationship. The heated vaporized organic fuel enters a catalyst bed where it is converted into a desired product such as hydrogen needed to power the fuel cell. During periods of high demand, air is injected upstream of the combustion chamber and organic fuel injection means to burn with some of the organic fuel on the outside of the combustion chamber, and thus be in direct heat exchange relation with the organic fuel going into the catalyst bed.

Vanderborgh, Nicholas E. (Los Alamos, NM); Springer, Thomas E. (Los Alamos, NM); Huff, James R. (Los Alamos, NM)

1987-01-01T23:59:59.000Z

342

Improving Compressed Air System Performance: A Sourcebook for Industry  

Broader source: Energy.gov [DOE]

This sourcebook is designed to provide compressed air system users with a reference that outlines opportunities for system performance improvements. It is not intended to be a comprehensive technical text on improving compressed air systems, but rather a document that makes compressed air system users aware of the performance improvement potential, details some of the significant opportunities, and directs users to additional sources of assistance.

343

Estimating the impacts of wind power on power systems—summary of IEA Wind  

Science Journals Connector (OSTI)

Adding wind power to power systems will have beneficial impacts by reducing the emissions of electricity production and reducing the operational costs of the power system as less fuel is consumed in conventional power plants. Wind power will also have a capacity value to a power system. However, possible negative impacts will have to be assessed to make sure that they will only offset a small part of the benefits and also to ensure the security of the power system operation. An international forum for the exchange of knowledge of power system impacts of wind power has been formed under the IEA Implementing Agreement on Wind Energy. The Task 'Design and Operation of Power Systems with Large Amounts of Wind Power' is analyzing existing case studies from different power systems. There are a multitude of studies completed and ongoing related to the cost of wind integration. However, the results are not easy to compare. This paper describes the general issues of wind power impacts on power systems and presents a comparison of results from ten case studies on increased balancing needs due to wind power.

Hannele Holttinen

2008-01-01T23:59:59.000Z

344

ECE 461/2: Power Systems I Calculus and algebra  

E-Print Network [OSTI]

in a complex industrial load -Lab Experience with Power Electronic Motor Drives- Understands electric- or better Fields Power System Analysis Three-phase circuits Concepts: - Single and three phase electric with associated power Electronics drives Applications: - Employing PSSE to calculate power system flow, stability

Schumacher, Russ

345

Patterned ion exchange membranes for improved power production in microbial reverse-electrodialysis cells  

E-Print Network [OSTI]

Patterned ion exchange membranes for improved power production in microbial reverse-electrodialysis August 2014 Keywords: Microbial reverse electrodialysis cell Patterned membranes Integrated spacer Internal resistance a b s t r a c t Power production in microbial reverse-electrodialysis cells (MRCs) can

346

Financing Home Energy and Renewable Energy Improvements with FHA PowerSaver Loans (Fact Sheet)  

SciTech Connect (OSTI)

This fact sheet is a revision to the PowerSaver Loan Benefits fact sheet from April 2014. It describes how the U.S. Department of Housing and Urban Development (HUD) PowerSaver Loan Program offers borrowers low-cost FHA-insured loans to make energy-saving improvements to their homes.

Not Available

2014-07-01T23:59:59.000Z

347

Electromagnetic pulse research on electric power systems: Program summary and recommendations. Power Systems Technology Program  

SciTech Connect (OSTI)

A single nuclear detonation several hundred kilometers above the central United States will subject much of the nation to a high-altitude electromagnetic pulse (BENT). This pulse consists of an intense steep-front, short-duration transient electromagnetic field, followed by a geomagnetic disturbance with tens of seconds duration. This latter environment is referred to as the magnetohydrodynamic electromagnetic pulse (NMENT). Both the early-time transient and the geomagnetic disturbance could impact the operation of the nation`s power systems. Since 1983, the US Department of Energy has been actively pursuing a research program to assess the potential impacts of one or more BENT events on the nation`s electric energy supply. This report summarizes the results of that program and provides recommendations for enhancing power system reliability under HENT conditions. A nominal HENP environment suitable for assessing geographically large systems was developed during the program and is briefly described in this report. This environment was used to provide a realistic indication of BEMP impacts on electric power systems. It was found that a single high-altitude burst, which could significantly disturb the geomagnetic field, may cause the interconnected power network to break up into utility islands with massive power failures in some areas. However, permanent damage would be isolated, and restoration should be possible within a few hours. Multiple bursts would likely increase the blackout areas, component failures, and restoration time. However, a long-term blackout of many months is unlikely because major power system components, such as transformers, are not likely to be damaged by the nominal HEND environment. Moreover, power system reliability, under both HENT and normal operating conditions, can be enhanced by simple, and often low cost, modifications to current utility practices.

Barnes, P.R.; McConnell, B.W.; Van Dyke, J.W. [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)

1993-01-01T23:59:59.000Z

348

Power factor correction of an electrical drive system based on multiphase machines  

E-Print Network [OSTI]

Power factor correction of an electrical drive system based on multiphase machines Khoudir MAROUANI_tabache@yahoo.com Abstract--This paper deals with the energy efficiency improvement of an electrical drive which can be used both in wind energy conversion or motor drive applications. A power factor (PF) control scheme

Paris-Sud XI, Université de

349

Power Systems Development Facility. Environmental Assessment  

SciTech Connect (OSTI)

The objective of the PSDF would be to provide a modular facility which would support the development of advanced, pilot-scale, coal-based power systems and hot gas clean-up components. These pilot-scale components would be designed to be large enough so that the results can be related and projected to commercial systems. The facility would use a modular approach to enhance the flexibility and capability for testing; consequently, overall capital and operating costs when compared with stand-alone facilities would be reduced by sharing resources common to different modules. The facility would identify and resolve technical barrier, as well as-provide a structure for long-term testing and performance assessment. It is also intended that the facility would evaluate the operational and performance characteristics of the advanced power systems with both bituminous and subbituminous coals. Five technology-based experimental modules are proposed for the PSDF: (1) an advanced gasifier module, (2) a fuel cell test module, (3) a PFBC module, (4) a combustion gas turbine module, and (5) a module comprised of five hot gas cleanup particulate control devices. The final module, the PCD, would capture coal-derived ash and particles from both the PFBC and advanced gasifier gas streams to provide for overall particulate emission control, as well as to protect the combustion turbine and the fuel cell.

Not Available

1993-06-01T23:59:59.000Z

350

Flywheel energy and power storage systems  

Science Journals Connector (OSTI)

For ages flywheels have been used to achieve smooth operation of machines. The early models where purely mechanical consisting of only a stone wheel attached to an axle. Nowadays flywheels are complex constructions where energy is stored mechanically and transferred to and from the flywheel by an integrated motor/generator. The stone wheel has been replaced by a steel or composite rotor and magnetic bearings have been introduced. Today flywheels are used as supplementary UPS storage at several industries world over. Future applications span a wide range including electric vehicles, intermediate storage for renewable energy generation and direct grid applications from power quality issues to offering an alternative to strengthening transmission. One of the key issues for viable flywheel construction is a high overall efficiency, hence a reduction of the total losses. By increasing the voltage, current losses are decreased and otherwise necessary transformer steps become redundant. So far flywheels over 10 kV have not been constructed, mainly due to isolation problems associated with high voltage, but also because of limitations in the power electronics. Recent progress in semi-conductor technology enables faster switching and lower costs. The predominant part of prior studies have been directed towards optimising mechanical issues whereas the electro technical part now seem to show great potential for improvement. An overview of flywheel technology and previous projects are presented and moreover a 200 kW flywheel using high voltage technology is simulated.

Björn Bolund; Hans Bernhoff; Mats Leijon

2007-01-01T23:59:59.000Z

351

Advanced Techniques for Power System Identification from Measured Data  

SciTech Connect (OSTI)

Time-synchronized measurements provide rich information for estimating a power-system's electromechanical modal properties via advanced signal processing. This information is becoming critical for the improved operational reliability of interconnected grids. A given mode's properties are described by its frequency, damping, and shape. Modal frequencies and damping are useful indicators of power-system stress, usually declining with increased load or reduced grid capacity. Mode shape provides critical information for operational control actions. This project investigated many advanced techniques for power system identification from measured data focusing on mode frequency and damping ratio estimation. Investigators from the three universities coordinated their effort with Pacific Northwest National Laboratory (PNNL). Significant progress was made on developing appropriate techniques for system identification with confidence intervals and testing those techniques on field measured data and through simulation. Experimental data from the western area power system was provided by PNNL and Bonneville Power Administration (BPA) for both ambient conditions and for signal injection tests. Three large-scale tests were conducted for the western area in 2005 and 2006. Measured field PMU (Phasor Measurement Unit) data was provided to the three universities. A 19-machine simulation model was enhanced for testing the system identification algorithms. Extensive simulations were run with this model to test the performance of the algorithms. University of Wyoming researchers participated in four primary activities: (1) Block and adaptive processing techniques for mode estimation from ambient signals and probing signals, (2) confidence interval estimation, (3) probing signal design and injection method analysis, and (4) performance assessment and validation from simulated and field measured data. Subspace based methods have been use to improve previous results from block processing techniques. Bootstrap techniques have been developed to estimate confidence intervals for the electromechanical modes from field measured data. Results were obtained using injected signal data provided by BPA. A new probing signal was designed that puts more strength into the signal for a given maximum peak to peak swing. Further simulations were conducted on a model based on measured data and with the modifications of the 19-machine simulation model. Montana Tech researchers participated in two primary activities: (1) continued development of the 19-machine simulation test system to include a DC line; and (2) extensive simulation analysis of the various system identification algorithms and bootstrap techniques using the 19 machine model. Researchers at the University of Alaska-Fairbanks focused on the development and testing of adaptive filter algorithms for mode estimation using data generated from simulation models and on data provided in collaboration with BPA and PNNL. There efforts consist of pre-processing field data, testing and refining adaptive filter techniques (specifically the Least Mean Squares (LMS), the Adaptive Step-size LMS (ASLMS), and Error Tracking (ET) algorithms). They also improved convergence of the adaptive algorithms by using an initial estimate from block processing AR method to initialize the weight vector for LMS. Extensive testing was performed on simulated data from the 19 machine model. This project was also extensively involved in the WECC (Western Electricity Coordinating Council) system wide tests carried out in 2005 and 2006. These tests involved injecting known probing signals into the western power grid. One of the primary goals of these tests was the reliable estimation of electromechanical mode properties from measured PMU data. Applied to the system were three types of probing inputs: (1) activation of the Chief Joseph Dynamic Brake, (2) mid-level probing at the Pacific DC Intertie (PDCI), and (3) low-level probing on the PDCI. The Chief Joseph Dynamic Brake is a 1400 MW disturbance to the system and is injected for a ha

Pierre, John W.; Wies, Richard; Trudnowski, Daniel

2008-11-25T23:59:59.000Z

352

Adaptive Power Control for Single and Multiuser Opportunistic Systems  

E-Print Network [OSTI]

In this dissertation, adaptive power control for single and multiuser opportunistic systems is investigated. First, a new adaptive power-controlled diversity combining scheme for single user systems is proposed, upon which is extended...

Nam, Sung Sik

2010-07-14T23:59:59.000Z

353

Solid Oxide Fuel Cell and Power System Development at PNNL |...  

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

and Power System Development at PNNL Solid Oxide Fuel Cell and Power System Development at PNNL Presented at the DOE-DOD Shipboard APU Workshop on March 29, 2011....

354

Dynamic modeling of tubular SOFC for marine power system  

Science Journals Connector (OSTI)

Solid oxide fuel cell (SOFC) has been identified as an effective and clean alternative choice for marine power system. This paper emphasizes on the ... SOFC power system and its performance based upon marine oper...

Bao-gang San; Pei-lin Zhou; David Clealand

2010-09-01T23:59:59.000Z

355

Battery Park Industries Inc formerly Moltech Power Systems Inc | Open  

Open Energy Info (EERE)

Battery Park Industries Inc formerly Moltech Power Systems Inc Battery Park Industries Inc formerly Moltech Power Systems Inc Jump to: navigation, search Name Battery Park Industries Inc (formerly Moltech Power Systems, Inc) Place Gainesville, Florida Product Bundled rechargeable battery manufacturing assets of Moltech Power Systems, following that company's bankruptcy. References Battery Park Industries Inc (formerly Moltech Power Systems, Inc)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Battery Park Industries Inc (formerly Moltech Power Systems, Inc) is a company located in Gainesville, Florida . References ↑ "Battery Park Industries Inc (formerly Moltech Power Systems, Inc)" Retrieved from "http://en.openei.org/w/index.php?title=Battery_Park_Industries_Inc_formerly_Moltech_Power_Systems_Inc&oldid=342547"

356

11 - Energy harvesters for powering wireless systems  

Science Journals Connector (OSTI)

Abstract: This chapter focuses on the strategies and devices used to convert the energy present in the environment into electricity to supply wireless and mobile systems. The ‘energy harvesting’ discipline is proving to be the first relevant response to the need for power supply without wire connections and batteries. Many transduction principles were investigated, and a number of design solutions were described in the literature. This chapter aims to provide the tools for static and dynamic design of energy harvesters, with focus on kinetic generators. Some innovative design solutions are introduced, and the most attractive modelling and simulation strategies are described.

G. De Pasquale

2013-01-01T23:59:59.000Z

357

Coal pulverizing systems for power generation  

SciTech Connect (OSTI)

The pulverized coal-fired boiler for power generation is a mature technology which requires the production of fine coal for combustion. The product material particle size is smaller than 250 microns and about 70 percent smaller than 75 microns. It is no coincidence that most of the new coal technologies for combustion or gasification require a product with a similar particle size distribution for complete reaction. This particle size distribution provides coal particles which can react with oxygen in the air at local velocities and resident times in the boiler furnace to result in almost complete combustion or gasification with 1 or 2 percent carbon loss in the resulting ash. Size reduction, while being one of the most common unit operations on material is also one of the least understood, requiring a high energy input. When pulverizing coal of the particle size required there is an added complication that the product may spontaneously ignite, particularly if the process passes through a stage when an explosive or at least highly combustible mixture of fine coal and air is present. The pulverized coal system covers that portion of the power station from coal bunkers to feeders, pulverizers and delivery system to the boiler burner or gasifier injection point. The transport medium has traditionally been air and in some cases inert gases. The system has usually been lean phase with air to coal ratios in excess of 1:4:1. More recently, a few systems have been dense phase with air to coal ratios of 1:30 up to 1:100. This has the distinct advantage of reduced transport pipe diameter. The key element in the system, the coal pulverizer, will be considered first.

Sligar, J.

1993-12-31T23:59:59.000Z

358

Simulation of a Wireless Power Transfer System for Electric Vehicles with Power Factor Correction  

SciTech Connect (OSTI)

Wireless power transfer has been a popular topic of recent research. Most research has been done to address the limitations of coil-to-coil efficiency. However, little has been done to address the problem associated with the low input power factor with which the systems operate. This paper details the steps taken to analyze a wireless power transfer system from the view of the power grid under a variety of loading conditions with and without power factor correction.

Pickelsimer, Michael C [ORNL; Tolbert, Leon M [ORNL; Ozpineci, Burak [ORNL; Miller, John M [ORNL

2012-01-01T23:59:59.000Z

359

Enabling process improvements through systems thinking  

E-Print Network [OSTI]

Manufacturing organizations around the world strive to improve processes with varying degrees of realization. There is no right way or latest and greatest process that can guarantee success, therefore the approach, and not ...

Dolak, Jessica

2006-01-01T23:59:59.000Z

360

Probabilistic Analysis of Power Tower Systems to Achieve Sunshot Goals  

Science Journals Connector (OSTI)

Abstract The U.S. Department of Energy's (DOE) SunShot goal seeks to reduce the levelized cost of energy (LCOE) for solar energy technologies to $0.06/kWh. A number of cost and technical performance targets for various concentrating solar power (CSP) components have been issued by the DOE to meet the SunShot goals for CSP. This paper presents probabilistic analyses of the LCOE for a 100 \\{MWe\\} power tower system with inherent cost and performance uncertainties. Previous results show that while CSP systems are likely to meet the cost target necessary to compete broadly in U.S. markets, there is a very low probability of reaching an LCOE of $0.06/kWh if parameter uncertainty distributions are used that range from current cost and performance values to the current DOE targets. This work investigates additional parameter distributions using new cost and technical targets to determine performance and cost scenarios for power tower systems that yield finite probabilities of achieving $0.06/kWh. Starting with the “baseline” uncertainty distributions, the minimum (or maximum) value for each uncertain parameter was “improved” by ?50% and ?75%. Results show that the probability of achieving an LCOE of $0.06/kWh increases to 15% and 46%, respectively, with these new cost and technical targets.

C. Ho; M. Mehos; C. Turchi; M. Wagner

2014-01-01T23:59:59.000Z

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


361

New trends in power and desalination integrated systems  

Science Journals Connector (OSTI)

Demand for desalinated water has increased sharply in recent years, not only in desert areas but also worldwide. To be able to meet such challenging future demand whilst maintaining reasonable water costs that can be sustained by the end users, real water management should be developed. This should include the limitation of leakages in the water distribution mains, adequate design of end user equipment to optimise water consumption and the adjustment of water quality to the real needs of end users. In addition, desalinated water production has to be increased while reducing more and more the cost of the product water. To achieve this goal, the power and desalination industry is improving the reliability of the processes, designing more efficient processes, integrating power and desalination systems, creating hybrids involving both thermal and membrane desalination processes and revamping or using existing facilities. Energy, capital and operating costs are key parameters of water desalination economics. The optimised integrated system selection has to be envisaged on a case by case basis: the choice will depend on the various specific conditions prevailing on site, which will be the basis of the build-up of the total cost, i.e. capital costs as well as operating costs. This presentation will focus on these various aspects of power and desalination integrated systems.

Jacques Andrianne

2004-01-01T23:59:59.000Z

362

Improving Pumping System Performance: A Sourcebook for Industry- Second Edition  

Broader source: Energy.gov [DOE]

This sourcebook is designed to provide pump system users with a reference that outlines opportunities for improving system performance. It is not meant to be a comprehensive technical text on pumping systems; rather, it provides practical guidelines and information to make users aware of potential performance improvements. Guidance on how to find more information and assistance is also included.

363

Environmental performance of power generation system in China based on LCA  

Science Journals Connector (OSTI)

In this study LCA (life cycle assessment) is used as a tool for the assessment of energy consumption and associated impacts generated from utilization of energy in various power generation systems in China. The details follow the methodology outlined in ISO14040. The scope of this research includes energy production energy transportation and energy utilization. The function unit of life cycle inventory is 1 kJ electricity power. Most of the inventory data have been collected from Yearbook of China. Compared to fuel?fired power generation system hydropower and nuclear power are more environment?friendly according to life cycle inventory analysis results so increasing the proportion of hydropower and nuclear power in the power industry has a significant improvement effect on the development of China’s power industry. The life cycle environmental impact of integrated power generation level in 2010 will be 13.8% lower than in 1999 according to National energy policy of China.

Xing Su; Xu Zhang; Yuan Yuan

2010-01-01T23:59:59.000Z

364

Improved Power Control in the Palm of Your Hand | Department of Energy  

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

Improved Power Control in the Palm of Your Hand Improved Power Control in the Palm of Your Hand Improved Power Control in the Palm of Your Hand November 7, 2011 - 2:11pm Addthis Silicon carbide thyristors, developed through a partnership between the Energy Department's Sandia National Lab and GeneSiC Semiconductor, are key to utility-scale power conversion. Learn more about this technology, which won a 2011 R&D 100 award. Dr. Imre Gyuk Dr. Imre Gyuk Energy Storage Program Manager, Office of Electricity Delivery and Energy Reliability How does it work? The GeneSic thyristor -- an electronic switch -- is based on on silicon carbide (SiC), which can operate at much higher temperatures than silicon. This allows the device to handle 10 times the voltage, and switch 100 times faster, than its silicon-based competition.

365

OE Power Systems Engineering Research & Development Program Partnerships |  

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

Mission » Power Systems Engineering Research and Development » OE Mission » Power Systems Engineering Research and Development » OE Power Systems Engineering Research & Development Program Partnerships OE Power Systems Engineering Research & Development Program Partnerships The OE Power Systems Research and Development Program engages a broad group of stakeholders in program planning, identification of high-priority technology gap areas, and joint participation in research, development, demonstration, and deployment activities. The partnerships involve: Partnerships with Other Federal Programs Federal partnerships include participation with the Federal Energy Management Program (FEMP) to promote and install distributed energy systems at Federal facilities; the Office of Energy Assurance and the Department of

366

Flexibility in 21st Century Power Systems (Fact Sheet)  

SciTech Connect (OSTI)

Flexibility of operation--the ability of a power system to respond to change in demand and supply--is a characteristic of all power systems. Flexibility is especially prized in twenty-first century power systems, with higher levels of grid-connected variable renewable energy (primarily, wind and solar). Sources of flexibility exist--and can be enhanced--across all of the physical and institutional elements of the power system, including system operations and markets, demand side resources and storage; generation; and transmission networks. Accessing flexibility requires significant planning to optimize investments and ensure that both short- and long-time power system requirements are met.

Not Available

2014-10-01T23:59:59.000Z

367

Optimal Shipboard Power System Management via Mixed Integer Dynamic Programming  

E-Print Network [OSTI]

Optimal Shipboard Power System Management via Mixed Integer Dynamic Programming Harry G. Kwatny' power systems using a logical specification to define the transition dynamics of the discrete subsystem following component failure(s) is a central goal of power system management including electric shipboard

Kwatny, Harry G.

368

The Application of Robust Optimization in Power Systems  

E-Print Network [OSTI]

Engineering Research Center Empowering Minds to Engineer the Future Electric Energy System #12;#12;The.Hedman@asu.edu Power Systems Engineering Research Center The Power Systems Engineering Research Center (PSERC) is a multi-university Center con- ducting research on challenges facing the electric power industry

369

New achievements for Romanian engineering training in modelling power systems  

Science Journals Connector (OSTI)

The evolution of electric power system analysis methods followed the present technical problems and business needs of electric utilities in Romania, before EU integration. Present technical requirements and the current stage of power system analysis ... Keywords: computer applications, computer simulation, fourier analysis, modelling, power systems, training

Stefania Popadiuc; Frangiskos Topalis; Cristiana Geambasu

2006-09-01T23:59:59.000Z

370

New achievements for Romanian engineering training in modelling power systems  

Science Journals Connector (OSTI)

The evolution of electric power system analysis methods followed the present technical problems and business needs of electric utilities in Romania, before EU integration. Present technical requirements and the current stage of power system analysis ... Keywords: Fourier analysis, computer applications, computer simulation, modelling, power systems, training

Stefania Popadiuc; Frangiskos Topalis; Cristiana Geambasu

2007-05-01T23:59:59.000Z

371

Ris-R-1257(EN) Isolated Systems with Wind Power  

E-Print Network [OSTI]

Risø-R-1257(EN) Isolated Systems with Wind Power An Implementation Guideline Niels-Erik Clausen energy in isolated communities. So far most studies of isolated systems with wind power have been case studies of isolated systems with wind power have mostly been case- oriented. Thus it has been difficult

372

GUIDELINES FOR CERTIFICATION OF COMBINED HEAT AND POWER SYSTEMS  

E-Print Network [OSTI]

CALIFORNIA ENERGY COMMISSION GUIDELINES FOR CERTIFICATION OF COMBINED HEAT AND POWER SYSTEMS for Certification of Combined Heat and Power Systems Pursuant to the Waste Heat and Carbon Emissions Reduction Act Heat and Power System Pursuant to the Waste Heat and Carbon Emissions Reduction Act, Public Utilities

373

International Rectifier Power Control Systems | Open Energy Information  

Open Energy Info (EERE)

Rectifier Power Control Systems Rectifier Power Control Systems Jump to: navigation, search Name International Rectifier Power Control Systems Place El Segundo, California Zip 90245 Product Originally a division of International Rectifier Corporation manufacturing semiconductor and module components for power management products. References International Rectifier Power Control Systems[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. International Rectifier Power Control Systems is a company located in El Segundo, California . References ↑ "International Rectifier Power Control Systems" Retrieved from "http://en.openei.org/w/index.php?title=International_Rectifier_Power_Control_Systems&oldid=347055"

374

Distributed Robust Power System State Estimation  

E-Print Network [OSTI]

Deregulation of energy markets, penetration of renewables, advanced metering capabilities, and the urge for situational awareness, all call for system-wide power system state estimation (PSSE). Implementing a centralized estimator though is practically infeasible due to the complexity scale of an interconnection, the communication bottleneck in real-time monitoring, regional disclosure policies, and reliability issues. In this context, distributed PSSE methods are treated here under a unified and systematic framework. A novel algorithm is developed based on the alternating direction method of multipliers. It leverages existing PSSE solvers, respects privacy policies, exhibits low communication load, and its convergence to the centralized estimates is guaranteed even in the absence of local observability. Beyond the conventional least-squares based PSSE, the decentralized framework accommodates a robust state estimator. By exploiting interesting links to the compressive sampling advances, the latter jointly es...

Kekatos, Vassilis

2012-01-01T23:59:59.000Z

375

Improvement of load-following capacity based on the flame radiation intensity signal in a power plant  

SciTech Connect (OSTI)

The capability to perform fast load changes has been an important issue due to the increasing commercialization of the power market. In the traditional boiler control system, the feedback signals come from the variations of the steam pressure and the steam flow, which leads to a large time delay. Therefore, a new method for the boiler control system based on radiation intensity for improving the load-following capacity of a coal-fired power plant has been developed in this paper. The system is implemented by adding the radiation intensity of the flame to the existing boiler control system as a complement. The radiation intensity obtained by the sensor can directly reflect the input heat in the boiler, with a faster response and higher sensitivity. Field tests on a 300 MW coal-fired power plant reveal that the improved boiler control system increases the load-following capacity. At the same time, the steam pressure variations are smaller as compared with those of the existing control system. 14 refs., 19 figs., 1 tab.

Fei Wang; Qunxing Huang; Dong Liu; Jianhua Yan; Kefa Cen [Zhejiang University, Hangzhou (China). State Key Laboratory of Clean Energy Utilization

2008-05-15T23:59:59.000Z

376

A portable measurement system for power profiling of processing units  

Science Journals Connector (OSTI)

Abstract The paper deals with the design and the metrologic characterization of a portable power consumption measurement system capable to correlate the average power consumption of a central processing unit to processor performance. A survey of power measurement systems designed for the evaluation of computer energy performance is provided. The design steps for the proposed power measurement system and its comprehensive hardware and software descriptions are reported. Furthermore, a calibration procedure of the power measurement system is described. Five benchmark tests have been executed on an Intel Pentium D processor and the measured power loads are reported and discussed.

F. Picariello; S. Rapuano; U. Villano

2014-01-01T23:59:59.000Z

377

Advanced fenestration systems for improved daylight performance  

E-Print Network [OSTI]

daylighting designs is a lack of systems perspective that accounts for, and provides an integrated solution

Selkowitz, S.; Lee, E.S.

1998-01-01T23:59:59.000Z

378

Protective, Modular Wave Power Generation System  

SciTech Connect (OSTI)

The concept of small wave energy conversion modules that can be built into large, scalable arrays, in the same vein as solar panels, has been developed. This innovation lends itself to an organic business and development model, and enables the use of large-run manufacturing technology to reduce system costs. The first prototype module has been built to full-scale, and tested in a laboratory wave channel. The device has been shown to generate electricity and dissipate wave energy. Improvements need to be made to the electrical generator and a demonstration of an array of modules should be made in natural conditions.

Vvedensky, Jane M.; Park, Robert Y.

2012-11-27T23:59:59.000Z

379

Training, simulation, restoration expert system for power grid  

Science Journals Connector (OSTI)

The paper introduces some technology for training, simulation, restoration expert system of power grid, the structure of the system including function composition, hardware and software composition are discuss...

An Luo; Qian Chen

2001-03-01T23:59:59.000Z

380

Energy efficiency improvements in Chinese compressed air systems  

E-Print Network [OSTI]

Air Systems, Paper #071 Energy efficiency improvements into increase industrial energy efficiency. As a result, morein use. Over time, energy efficiency decreases and the cost

McKane, Aimee; Li, Li; Li, Yuqi; Taranto, T.

2008-01-01T23:59:59.000Z

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


381

Improvement and Simplification of Diesel Particulate Filter System...  

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

and Simplification of Diesel Particulate Filter System using a Ceria-Based Fuel-Borne Catalyst in Serial Applications Improvement and Simplification of Diesel Particulate Filter...

382

Improving Pumping System Performance: A Sourcebook for Industry, Second Edition  

SciTech Connect (OSTI)

Prepared for the DOE Industrial Technologies Program, this sourcebook contains the practical guidelines and information manufacturers need to improve the efficiency of their pumping systems.

Not Available

2006-05-01T23:59:59.000Z

383

Prognostic Control and Load Survivability in Shipboard Power Systems  

E-Print Network [OSTI]

, etc. Transmission systems consist of transformers, circuit breakers, and transmission lines to deliver power from the generation power plants to distribution systems. Commercial, residential, and industrial customers are the types of loads served... cannot supply power to it, then it should be powered through its alternate path. The process of restoring, balancing, and minimizing power losses to loads is called network reconfiguration. Prognostics is the ability to predict precisely and accurately...

Thomas, Laurence J.

2011-02-22T23:59:59.000Z

384

Benefits of Stochastic Scheduling for Power Systems with Significant Installed Wind Power  

E-Print Network [OSTI]

Benefits of Stochastic Scheduling for Power Systems with Significant Installed Wind Power Aidan a stochastic element due to the uncertainty of wind power forecasts. By explicitly taking into account the stochastic nature of wind power, it is expected that better schedules should be produced, thereby reducing

385

LINEAR TIME PERIODIC MODELLING OF POWER ELECTRONIC DEVICES FOR POWER SYSTEM HARMONIC ANALYSIS AND SIMULATION  

E-Print Network [OSTI]

LINEAR TIME PERIODIC MODELLING OF POWER ELECTRONIC DEVICES FOR POWER SYSTEM HARMONIC ANALYSIS by simulation. 1. INTRODUCTION The variety and the wide spread use of power electronic devices in the power networks is due to their diverse and multiple functions: compensation, protection and interface

Boyer, Edmond

386

Hybrid Power System Simulation Model | Open Energy Information  

Open Energy Info (EERE)

Hybrid Power System Simulation Model Hybrid Power System Simulation Model Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Hybrid Power System Simulation Model Focus Area: Renewable Energy Topics: System & Application Design Website: www.umass.edu/windenergy/OLD_SITE/projects/hybrid2/ Equivalent URI: cleanenergysolutions.org/content/hybrid-power-system-simulation-model, Language: English Policies: Deployment Programs DeploymentPrograms: Technical Assistance This tool performs detailed long-term performance and economic analysis on a wide variety of hybrid power systems. It is a probabilistic/time-series computer model, using time-series data for loads, wind speed, solar insolation, temperature, and the power system designed or selected by the user, to predict the performance of the hybrid power system. An economic

387

Hybrid Control Network Intrusion Detection Systems for Automated Power Distribution Systems  

E-Print Network [OSTI]

and improve the reliability of the distribution system [3].distribution topology for protection and to improve reliability.

Parvania, Masood; Koutsandria, Georgia; Muthukumar, Vishak; Peisert, Sean; McParland, Chuck; Scaglione, Anna

2014-01-01T23:59:59.000Z

388

Simulation Models for Improved Water Heating Systems  

E-Print Network [OSTI]

The DLM accounts for the distribution heat loss within eachHot-Water Distribution System Piping Heat Loss Factors—PhaseHot Water Distribution System Piping Heat Loss Factors-

Lutz, Jim

2014-01-01T23:59:59.000Z

389

Steam System Improvement: A Case Study  

E-Print Network [OSTI]

. For industries, this will result in the reduction of production cost. In industry where steam is utilized, the steam production and distribution system consumes a significant portion of energy. Therefore, optimization of steam system is among the biggest energy...

Venkatesan, V. V.; Leigh, N.

390

Steam System Improvements at a Manufacturing Plant  

E-Print Network [OSTI]

BWX Technologies, Naval Nuclear Fuel Division (NNFD) is a manufacturing company with a steam system consisting of two Babcock & Wilcox boilers and approximately 350 steam traps. The steam system is used to produce and distribute steam for space...

Compher, J.; Morcom, B.

391

Energy Storage Systems 2007 Peer Review - Power Electronics Presentations |  

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

Power Electronics Power Electronics Presentations Energy Storage Systems 2007 Peer Review - Power Electronics Presentations The U.S. DOE Energy Storage Systems Program (ESS) held an annual peer review on September 27, 2007 in San Francisco, CA. Eighteen presentations were divided into categories; those related to power electronics are below. Other presentation categories were: Economics - Benefit Studies and Environment Benefit Studies Utility & Commercial Applications of Advanced Energy Storage Systems International Energy Storage Programs Innovations in Energy Storage Systems ESS 2007 Peer Review - StatCom with Energy Storage to Smooth Intermittent Power Output of Wind Farms - Mesut Baran, NC State.pdf ESS 2007 Peer Review - Cyber-Physical Systems Distributed Control - Mariesa

392

Improved high temperature solar absorbers for use in Concentrating Solar Power central receiver applications.  

SciTech Connect (OSTI)

Concentrating solar power (CSP) systems use solar absorbers to convert the heat from sunlight to electric power. Increased operating temperatures are necessary to lower the cost of solar-generated electricity by improving efficiencies and reducing thermal energy storage costs. Durable new materials are needed to cope with operating temperatures >600 C. The current coating technology (Pyromark High Temperature paint) has a solar absorptance in excess of 0.95 but a thermal emittance greater than 0.8, which results in large thermal losses at high temperatures. In addition, because solar receivers operate in air, these coatings have long term stability issues that add to the operating costs of CSP facilities. Ideal absorbers must have high solar absorptance (>0.95) and low thermal emittance (<0.05) in the IR region, be stable in air, and be low-cost and readily manufacturable. We propose to utilize solution-based synthesis techniques to prepare intrinsic absorbers for use in central receiver applications.

Stechel, Ellen Beth; Ambrosini, Andrea; Hall, Aaron Christopher; Lambert, Timothy L.; Staiger, Chad Lynn; Bencomo, Marlene

2010-09-01T23:59:59.000Z

393

PLATO Power--a robust, low environmental impact power generation system for the Antarctic plateau  

E-Print Network [OSTI]

PLATO Power--a robust, low environmental impact power generation system for the Antarctic plateau the power generation and management system of PLATO. Two redundant arrays of solar panels and a multiply astronomical facilities on the Antarctic plateau, offering minimum environmental impact and requiring minimal

Ashley, Michael C. B.

394

A survey of techniques for improving energy efficiency in embedded computing systems  

Science Journals Connector (OSTI)

Recent technological advances have greatly improved the performance and features of embedded systems. With the number of just mobile devices now reaching nearly equal to the population of Earth, embedded systems have truly become ubiquitous. These trends, however, have also made the task of managing their power consumption extremely challenging. In recent years, several techniques have been proposed to address this issue. In this paper, we survey the techniques for managing power consumption of embedded systems. We discuss the need of power management and provide a classification of the techniques on several important parameters to highlight their similarities and differences. This paper is intended to help the researchers and application-developers in gaining insights into the working of power management techniques and designing even more efficient high-performance embedded systems of tomorrow.

Sparsh Mittal

2014-01-01T23:59:59.000Z

395

Production system improvement : floor area reduction and inventory optimization  

E-Print Network [OSTI]

This thesis shows improvements of a medical device production system. The demand at the Medical Device Manufacturing Company (MDMCą) is low for the occlusion system product and there is a need to introduce other production ...

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

2012-01-01T23:59:59.000Z

396

Review of recent advances of radioisotope power systems  

Science Journals Connector (OSTI)

Radioisotope power systems have demonstrated numerous advantages over other types of power supplies for long-lived, unattended applications in space and in remote terrestrial locations. Many especially challenging power applications can be satisfied by proper selection, design, and integration of the radioisotope heat source and the power conversion technologies that are now available or that can be developed. This paper provides a brief review of the factors influencing selection of radioisotopes and design of power systems, and discusses the current state of practice and future programmatic and technical challenges to continued use of radioisotope power systems in space.

Robert G. Lange; Wade P. Carroll

2008-01-01T23:59:59.000Z

397

Control system and method for a universal power conditioning system  

SciTech Connect (OSTI)

A new current loop control system method is proposed for a single-phase grid-tie power conditioning system that can be used under a standalone or a grid-tie mode. This type of inverter utilizes an inductor-capacitor-inductor (LCL) filter as the interface in between inverter and the utility grid. The first set of inductor-capacitor (LC) can be used in the standalone mode, and the complete LCL can be used for the grid-tie mode. A new admittance compensation technique is proposed for the controller design to avoid low stability margin while maintaining sufficient gain at the fundamental frequency. The proposed current loop controller system and admittance compensation technique have been simulated and tested. Simulation results indicate that without the admittance path compensation, the current loop controller output duty cycle is largely offset by an undesired admittance path. At the initial simulation cycle, the power flow may be erratically fed back to the inverter causing catastrophic failure. With admittance path compensation, the output power shows a steady-state offset that matches the design value. Experimental results show that the inverter is capable of both a standalone and a grid-tie connection mode using the LCL filter configuration.

Lai, Jih-Sheng; Park, Sung Yeul; Chen, Chien-Liang

2014-09-02T23:59:59.000Z

398

China Wind Systems formerly Green Power Malex | Open Energy Information  

Open Energy Info (EERE)

Green Power Malex Green Power Malex Jump to: navigation, search Name China Wind Systems (formerly Green Power/Malex) Place Wuxi, Jiangsu Province, China Sector Wind energy Product Manufacturer of precision-forged rolled rings and machinery with applications for the wind power industry. References China Wind Systems (formerly Green Power/Malex)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. China Wind Systems (formerly Green Power/Malex) is a company located in Wuxi, Jiangsu Province, China . References ↑ "China Wind Systems (formerly Green Power/Malex)" Retrieved from "http://en.openei.org/w/index.php?title=China_Wind_Systems_formerly_Green_Power_Malex&oldid=343554

399

Nonlinear modal interaction in HVDC/AC power systems with dc power modulation  

SciTech Connect (OSTI)

In this paper investigation of nonlinear modal interaction using the normal form of vector fields technique is extended to HVDC/AC power systems with dc power modulation. The ac-dc interface equations are solved to form a state space model with second order approximation. Using the normal form technique, the system`s nonlinear dynamic characteristics are obtained. The proposed approach is applied to a 4-generator HVDC/AC test power system, and compare with the time domain solution.

Ni, Y.X. [Tsinghua Univ., Beijing (China)] [Tsinghua Univ., Beijing (China); Vittal, V.; Kliemann, W.; Fouad, A.A. [Iowa State Univ., Ames, IA (United States)] [Iowa State Univ., Ames, IA (United States)

1996-11-01T23:59:59.000Z

400

Prefire identification for pulse power systems  

DOE Patents [OSTI]

Prefires in a high-power, high-frequency, multi-stage pulse generator are detected by a system having an EMI shielded pulse timing transmitter associated with and tailored to each stage of the pulse generator. Each pulse timing transmitter upon detection of a pulse triggers a laser diode to send an optical signal through a high frequency fiber optic cable to a pulse timing receiver which converts the optical signal to an electrical pulse. The electrical pulses from all pulse timing receivers are fed through an OR circuit to start a time interval measuring device and each electrical pulse is used to stop an individual channel in the measuring device thereby recording the firing sequence of the multi-stage pulse generator.

Longmire, Jerry L. (Los Alamos, NM); Thuot, Michael E. (Espanola, NM); Warren, David S. (Los Alamos, NM)

1985-01-01T23:59:59.000Z

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


401

Prefire identification for pulse-power systems  

DOE Patents [OSTI]

Prefires in a high-power, high-frequency, multi-stage pulse generator are detected by a system having an EMI shielded pulse timing transmitter associated with and tailored to each stage of the pulse generator. Each pulse timing transmitter upon detection of a pulse triggers a laser diode to send an optical signal through a high frequency fiber optic cable to a pulse timing receiver which converts the optical signal to an electrical pulse. The electrical pulses from all pulse timing receivers are fed through an OR circuit to start a time interval measuring device and each electrical pulse is used to stop an individual channel in the measuring device thereby recording the firing sequence of the multi-stage pulse generator.

Longmire, J.L.; Thuot, M.E.; Warren, D.S.

1982-08-23T23:59:59.000Z

402

Simulation Models for Improved Water Heating Systems  

E-Print Network [OSTI]

distribution (in multi-family buildings); efficiency (eithercentral systems in multi- family buildings are assigned a54 °C (130 °F) for multi-family buildings that have central

Lutz, Jim

2014-01-01T23:59:59.000Z

403

IMPROVING THE EFFICIENCY OF AN EXISTING GROUNDWATER REMEDIATION SYSTEM  

E-Print Network [OSTI]

.9 kilowatt total) 14 #12;ENERGY IMPROVEMENT BENEFITS 15 #12;RETURN ON INVESTMENT: SOLAR PANELS 16 #12 of grid energy with solar panel arrays Long-term operations and maintenance costs were significantly.7 kilowatt total) 13 #12;GROUNDWATER SYSTEM ENERGY IMPROVEMENTS ­ Northern Solar Array: 56 panel system (10

Illinois at Urbana-Champaign, University of

404

Dynamically Quantifying and Improving the Reliability of Distributed Storage Systems  

E-Print Network [OSTI]

Dynamically Quantifying and Improving the Reliability of Distributed Storage Systems Rekha Bachwani,ricardob}@cs.rutgers.edu {gryz,dubnicki}@nec-labs.com Abstract In this paper, we argue that the reliability of large-scale storage systems can be significantly improved by using bet- ter reliability metrics and more efficient

Bianchini, Ricardo

405

System-Wide Emissions Implications of Increased Wind Power Penetration  

E-Print Network [OSTI]

and ramifications of wind power providing 20% of U.S. electricity by 2030.1 Wind energy is advantageous becauseSystem-Wide Emissions Implications of Increased Wind Power Penetration Lauren Valentino,, Viviana of incorporating wind energy into the electric power system. We present a detailed emissions analysis based

Kemner, Ken

406

Phasor Measurement Unit Data in Power System State Estimation  

E-Print Network [OSTI]

by supervisory control and data acquisition (SCADA) devices. The incorporation of PMU measurementsPhasor Measurement Unit Data in Power System State Estimation Intermediate Project Report Power Center since 1996 PSERC #12;Power Systems Engineering Research Center Phasor Measurement Unit Data

407

The future of GPS-based electric power system measurements, operation and control  

SciTech Connect (OSTI)

Much of modern society is powered by inexpensive and reliable electricity delivered by a complex and elaborate electric power network. Electrical utilities are currently using the Global Positioning System-NAVSTAR (GPS) timekeeping to improve the network`s reliability. Currently, GPS synchronizes the clocks on dynamic recorders and aids in post-mortem analysis of network disturbances. Two major projects have demonstrated the use of GPS-synchronized power system measurements. In 1992, the Electric Power Research Institute`s (EPRI) sponsored Phase Measurements Project used a commercially available Phasor Measurements Unit (PMU) to collect GPS-synchronized measurements for analyzing power system problems. In 1995, Bonneville Power Administration (BPA) and Western Area Power Administration (WAPA) under DOE`s and EPRI`s sponsorship launched the Wide Area Measurements (WAMS) project. WAMS demonstrated GPS-synchronized measurements over a large area of their power networks and demonstrated the networking of GPS-based measurement systems in BPA and WAPA. The phasor measurement technology has also been used to conduct dynamic power system tests. During these tests, a large dynamic resistor was inserted to simulate a small power system disturbance.

Rizy, D.T. [Oak Ridge National Lab., TN (United States); Wilson, R.E. [Western Area Power Administration, Golden, CO (United States); Martin, K.E.; Litzenberger, W.H. [Bonneville Power Administration, Portland, OR (United States); Hauer, J.F. [Pacific Northwest National Lab., Richland, WA (United States); Overholt, P.N. [Dept. of Energy, Washington, DC (United States); Sobajic, D.J. [Electric Power Research Inst., Palo Alto, CA (United States)

1998-11-01T23:59:59.000Z

408

Sensors and Actuators B 111112 (2005) 230241 Improvements in LED-based fluorescence analysis systems  

E-Print Network [OSTI]

Sensors and Actuators B 111­112 (2005) 230­241 Improvements in LED-based fluorescence analysis the stability, power output, and spectral flexibility of light emitting diode (LED)-based systems used to excite fluorescence or other forms of luminescence. LEDs are an attractive alternative to conventional white

Wilson, Denise

409

EA-1980: Spar Canyon-Round Valley Access Road System Improvements, Custer County, Idaho  

Broader source: Energy.gov [DOE]

Bonneville Power Administration is preparing an EA to assess potential environmental impacts of proposed improvements to the access road system for its existing Spar Canyon-Round Valley Transmission Line located on Bureau of Land Management land in Custer County, Idaho.

410

Safety system augmentation at Russian nuclear power plants  

SciTech Connect (OSTI)

This paper describes the design and procurement of a Class IE DC power supply system to upgrade plant safety at the Kola Nuclear Power Plant (NPP). Kola NPP is located above the Arctic circle at Polyarnie Zorie, Murmansk, Russia. Kola NPP consists of four units. Units 1 and 2 have VVER-440/230 type reactors: Units 3 and 4 have VVER-440/213 type reactors. The VVER-440 reactor design is similar to the pressurized water reactor design used in the US. This project provided redundant, Class 1E DC station batteries and DC switchboards for Kola NPP, Units 1 and 2. The new DC power supply system was designed and procured in compliance with current nuclear design practices and requirements. Technical issues that needed to be addressed included reconciling the requirements in both US and Russian codes and satisfying the requirements of the Russian nuclear regulatory authority. Close interface with ATOMENERGOPROEKT (AEP), the Russian design organization, KOLA NPP plant personnel, and GOSATOMNADZOR (GAN), the Russian version of US Nuclear Regulatory Commission, was necessary to develop a design that would assure compliance with current Russian design requirements. Hence, this project was expected to serve as an example for plant upgrades at other similar VVER-440 nuclear plants. In addition to technical issues, the project needed to address language barriers and the logistics of shipping equipment to a remote section of the Former Soviet Union (FSU). This project was executed by Burns and Roe under the sponsorship of the US DOE as part of the International Safety Program (INSP). The INSP is a comprehensive effort, in cooperation with partners in other countries, to improve nuclear safety worldwide. A major element within the INSP is the improvement of the safety of Soviet-designed nuclear reactors.

Scerbo, J.A.; Satpute, S.N.; Donkin, J.Y.; Reister, R.A. [Burns and Roe, Oradell, NJ (United States); [Department of Energy, Germantown, MD (United States)

1996-12-31T23:59:59.000Z

411

NREL: News - NREL Names Santiago Grijalva Director for Power Systems  

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

013 013 NREL Names Santiago Grijalva Director for Power Systems Engineering July 1, 2013 Today, the Energy Department's National Renewable Energy Laboratory (NREL) announced a key hire to lead its Power Systems Engineering Center. Santiago Grijalva comes to NREL with both industry and academic experience, most recently from the Georgia Institute of Technology, where he held the position of Georgia Power Distinguished Professor and Strategic Energy Institute Associate Director for Electricity. As part of the Energy Systems Integration team at NREL, Dr. Grijalva will provide leadership to develop the strategic direction of the Power Systems Engineering Center, enhance technical capabilities and steward core competencies that advance electric power technologies. He will also lead

412

New and Underutilized Technology: Computer Power Management Systems |  

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

Computer Power Management Systems Computer Power Management Systems New and Underutilized Technology: Computer Power Management Systems October 7, 2013 - 9:08am Addthis The following information outlines key deployment considerations for computer power management systems within the Federal sector. Benefits Computer power management systems include network-based software that manages computer power consumption by automatically putting them in standby, hibernation, or other low energy consuming state without interfering with user productivity or IT functions. Application Computer power management systems are applicable in most building categories with high computer counts. Key Factors for Deployment Life-cycle cost effectiveness studies are recommended prior to deployment. Ranking Criteria Federal energy savings, cost-effectiveness, and probability of success are

413

Improving Regional Air Quality with Wind Energy; Wind Powering America Fact Sheet Series  

Wind Powering America (EERE)

Powering America Fact Sheet Series Powering America Fact Sheet Series The Montgomery County, Maryland buying group purchases wind energy from the Mountaineer Wind Energy Center in West Virginia. This fact sheet provides an overview of how electricity generated from zero-emission wind energy can help states and municipalities improve air quality, achieve attainment of Clean Air Act standards, and reduce pollution control costs for taxpayers.

414

Reliability improvement of distribution systems using SSVR  

Science Journals Connector (OSTI)

This paper presents a reliability assessment algorithm for distribution systems using a Static Series Voltage Regulator (SSVR). Furthermore, this algorithm considers the effects of Distributed Generation (DG) units, alternative sources, system reconfiguration, load shedding and load adding on distribution system reliability indices. In this algorithm, load points are classified into 8 types and separated restoration times are considered for each class. Comparative studies are conducted to investigate the impacts of DG and alternative source unavailability on the distribution system reliability. For reliability assessment, the customer-oriented reliability indices such as SAIFI, SAIDI, CAIDI ASUI and also load- and energy-oriented indices such as ENS and AENS are evaluated. The effectiveness of the proposed algorithm is examined on the two standard distribution systems consisting of 33 and 69 nodes. The best location of the SSVR in distribution systems is determined based on different reliability indices, separately. Results show that the proposed algorithm is efficient for large-scale radial distribution systems and can accommodate the effects of fault isolation and load restoration.

Mehdi Hosseini; Heidar Ali Shayanfar; Mahmoud Fotuhi-Firuzabad

2009-01-01T23:59:59.000Z

415

1836 IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 23, NO. 4, NOVEMBER 2008 Vulnerability Assessment of Cybersecurity  

E-Print Network [OSTI]

of Cybersecurity for SCADA Systems Chee-Wooi Ten, Student Member, IEEE, Chen-Ching Liu, Fellow, IEEE's cybersecurity standards for electric power systems. The purpose is to study the impact of a cyber attack within the substation networks. Countermeasures are identified for improvement of the cybersecurity

Manimaran, Govindarasu

416

1 INTRODUCTION In Nuclear Power Plant (NPP) systems, effective  

E-Print Network [OSTI]

1 INTRODUCTION In Nuclear Power Plant (NPP) systems, effective prediction methods are sought for Nuclear Power Plant Failure Scenarios Using an Ensemble-based Approach J. Liu & V. Vitelli Chair

Paris-Sud XI, Université de

417

Data Mining in Load Forecasting of Power System  

Science Journals Connector (OSTI)

This project applies Data Mining technology to the prediction of electric power system load forecast. It proposes a mining program of electric power load forecasting data based on the similarity of time series .....

Guang Yu Zhao; Yan Yan; Chun Zhou Zhao…

2013-01-01T23:59:59.000Z

418

Power system design for the CSUN CubeSat.  

E-Print Network [OSTI]

??The California State University of Northridge CubeSat, code named CSUNSat, will test a new low-temperature capable, battery/ultra capacitor power system with a low voltage/low power… (more)

Keyawa, Matthew

2015-01-01T23:59:59.000Z

419

Geothermal Binary Power Generation System Using Unutilized Energy  

Science Journals Connector (OSTI)

Binary power generating system is based on the Rankine cycle with geothermal fluid as heating source and low boiling ... can generate electric power from low temperature (energy) source. Employing the binary powe...

Hiroaki Shibata; Hiroshi Oyama…

2007-01-01T23:59:59.000Z

420

Joint transmission system projects to improve system reliability  

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

5 12 JOINT NEWS RELEASE Bonneville Power Administration Puget Sound Energy Seattle City Light Snohomish PUD FOR IMMEDIATE RELEASE Tuesday, January 24, 2012 CONTACT: Mike Hansen,...

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


421

Advance Three Phase Power Factor Correction Schemes for Utility Interface of Power Electronic Systems  

E-Print Network [OSTI]

systems, battery chargers and data centers etc. Also, high voltage DC (HVDC) systems employ rectifiers to convert ac input to DC output. HVDC is one example of the application of AC/DC conversion, in power system also, grid tie of two different power...

Albader, Mesaad

2014-07-30T23:59:59.000Z

422

Case Study: Enabling Sustainable Acquisition by Improving Procurement Systems  

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

Using an Environmental Management Using an Environmental Management System to review existing proce- dures revealed new opportunities for improvement through changes in procurement systems. Enabling Sustainable Acquisiton by Improving Procurement Systems The Department of Energy Waste Isolation Pilot Plant (WIPP) is a repository for de- fense-generated transuranic waste. Recently, the site submitted a procurement lessons learned document to DOE headquarters. In the document, WIPP staff noted that peri- odic review of Environmental Management System (EMS) sub-systems is necessary to ensure that desired progress towards environmental objectives is being achieved. An internal review of these sub-systems in early 2010 found that the Affirmative

423

Improving the Water Efficiency of Cooling Production System  

E-Print Network [OSTI]

For most of the time, cooling towers (CTs) of cooling systems operate under partial load conditions and by regulating the air circulation with a variable frequency drive (VFD), significant reduction in the fan power can be achieved. In Kuwait...

Maheshwari, G.; Al-Hadban, Y.; Al-Taqi, H. H.; Alasseri, R.

2010-01-01T23:59:59.000Z

424

Southwestern Federal Power System's Fiscal Year 2012 Financial Statement Audit  

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

Southwestern Federal Power Southwestern Federal Power System's Fiscal Year 2012 Financial Statement Audit OAS-FS-13-13 August 2013 Department of Energy Washington, DC 20585 August 12, 2013 MEMORANDUM FOR THE ADMINISTRATOR, SOUTHWESTERN POWER ADMINISTRATION FROM: Daniel M. Weeber Assistant Inspector General for Audits and Administration Office of Inspector General SUBJECT: INFORMATION: Southwestern Federal Power System's Fiscal Year 2012 Financial Statement Audit The attached report presents the results of the independent certified public accountants' audit of the Southwestern Federal Power System's (SWFPS) combined balance sheets, as of September 30, 2012 and 2011, and the related combined statements of changes in

425

Heat pump having improved defrost system  

DOE Patents [OSTI]

A heat pump system includes, in an operable relationship for transferring heat between an exterior atmosphere and an interior atmosphere via a fluid refrigerant: a compressor; an interior heat exchanger; an exterior heat exchanger; an accumulator; and means for heating the accumulator in order to defrost the exterior heat exchanger. 2 figs.

Chen, F.C.; Mei, V.C.; Murphy, R.W.

1998-12-08T23:59:59.000Z

426

Steam System Improvement: A Case Study  

E-Print Network [OSTI]

usage) where steam generation accounts for 85% of the total energy used. Therefore, optimization of the steam system has the biggest energy saving potential. This paper mill produces 40,000 pounds of steam at 600 psig and distributes it to the paper...

Leigh, N.; Venkatesan, V. V.

427

Energy Department Nuclear Systems Are Powering Mars Rover | Department of  

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

Energy Department Nuclear Systems Are Powering Mars Rover Energy Department Nuclear Systems Are Powering Mars Rover Energy Department Nuclear Systems Are Powering Mars Rover November 28, 2011 - 2:00pm Addthis The Mars Science Laboratory rover, which launched from Cape Canaveral this weekend, is powered by nuclear systems developed by the U.S. Department of Energy (DOE), marking the 28th space mission supported by nuclear energy. This year also marks the 50th anniversary of nuclear-powered space exploration. To commemorate the launch, DOE released a new video highlighting this legacy and the Department's work designing these advanced systems. "For the last 50 years, this technology has supported the peaceful use of nuclear power for space exploration, helping to shape the world's understanding of our solar system," said U.S. Energy Secretary Steven

428

American Energy Power Systems Inc AEPS | Open Energy Information  

Open Energy Info (EERE)

Inc AEPS Inc AEPS Jump to: navigation, search Name American Energy Power Systems Inc (AEPS) Place Sacramento, California Sector Solar Product Offered distributed power systems including PV panels, solar water heating, fuel cells and radiant floor heating applications. References American Energy Power Systems Inc (AEPS)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. American Energy Power Systems Inc (AEPS) is a company located in Sacramento, California . References ↑ "American Energy Power Systems Inc (AEPS)" Retrieved from "http://en.openei.org/w/index.php?title=American_Energy_Power_Systems_Inc_AEPS&oldid=342116" Categories: Clean Energy Organizations

429

Energy Department Nuclear Systems Are Powering Mars Rover | Department of  

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

Department Nuclear Systems Are Powering Mars Rover Department Nuclear Systems Are Powering Mars Rover Energy Department Nuclear Systems Are Powering Mars Rover November 28, 2011 - 12:14pm Addthis Washington, D.C. - The Mars Science Laboratory rover, which launched from Cape Canaveral this weekend, is powered by nuclear systems developed by the U.S. Department of Energy (DOE), marking the 28th space mission supported by nuclear energy. This year also marks the 50th anniversary of nuclear-powered space exploration. To commemorate the launch, DOE released a new video highlighting this legacy and the Department's work designing these advanced systems. "For the last 50 years, this technology has supported the peaceful use of nuclear power for space exploration, helping to shape the world's understanding of our solar system," said U.S. Energy Secretary Steven

430

Modeling and improvement of direct power control of DFIG under unbalanced grid voltage condition  

Science Journals Connector (OSTI)

Abstract This paper presents analysis and control of a doubly-fed induction generator (DFIG)-based wind generation system operating under unbalanced grid voltage condition. The DFIG system is modeled in synchronous positive reference frame. System behavior and operation of both the generator and the grid side converter (GSC) under unbalanced condition is illustrated by definition of oscillating power terms in the synchronous reference frame. This analysis makes it possible to control both the active and reactive power generation by means of direct power control (DPC) technique. It is shown that considering the DFIG model in synchronous reference frame simplifies the power terms extraction. Moreover, alternative DFIG control targets such as reducing unbalanced stator current, torque and power pulsations minimization, are considered. In addition, by the proposed method, the oscillation of the stator output power is compensated by the GSC, to ensure constant power output from the overall DFIG generation system. The validation of results has been performed through simulation results on a 2 MW DFIG wind generation system.

Mohammad Jafar Zandzadeh; Abolfazl Vahedi

2014-01-01T23:59:59.000Z

431

Innovative boiler master design improves system response  

SciTech Connect (OSTI)

A quick and nimble boiler distributed control system can end up moving at the speed of molasses in winter after a low-NOx retrofit. In one utility fleet, several units, despite being equipped with a modern DCS, were experiencing firing system time lags and degraded dynamic loading capability. Swinging steam pressures and opacity excursions were forcing operators to constantly remove the unit from the load dispatch. Following a discussion of the new boiler control strategy, this article presents three studies detailing its installation at four coal-fired units owned and operated by the Kentucky Utilities (KU) subsidiary of E.ON US. The 495-MW Unit 3 of E.W. Brown Generating Station; the 75-MW Unit 3 of Tyrone Generating Station and the 75-MW Unit 3 and 100-MW Unit 4 of Green River Generating Station. Coal-fired plants produce about 95% of Kentucky's total generation. 4 figs.

Keller, G.; Baker, B.; Jones, R.J. [Burns and Roe, Oradell, NJ (United States)

2007-02-15T23:59:59.000Z

432

System-wide emissions implications of increased wind power penetration.  

SciTech Connect (OSTI)

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.

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

433

ARIZONA STATE UNIVERSITY POWER SYSTEMS ENGINEERING RESEARCH CENTER  

E-Print Network [OSTI]

FOR HIGHLY VARYING POWER SYSTEM LOADS Diwakar Tewari February, 2002 #12;ABSTRACT Representation and modeling of loads in a power system are very important, as a system may have different types of complex loads nature of load current, but they often have a rich set of operating data over a wide range of operation

434

A CycloDissipativity Condition for Power Factor Improvement in Electrical Circuits  

E-Print Network [OSTI]

A Cyclo­Dissipativity Condition for Power Factor Improvement in Electrical Circuits Romeo Ortega compensation problem for electrical circuits. Namely, we prove that a necessary condition for a (shunt of the source are functions of time and are denoted by the column vectors vs, is Rq . The load is described

Stankoviæ, Aleksandar

435

Reactive power management of distribution networks with wind generation for improving voltage stability  

E-Print Network [OSTI]

Reactive power management of distribution networks with wind generation for improving voltage February 2013 Available online Keywords: Composite load Distributed generation D-STATCOM Q with distributed wind generation. Firstly, the impact of high wind penetration on the static voltage stability

Pota, Himanshu Roy

436

IEEE POWER ELECTRONICS LETTERS 1 A Constant-Frequency Method for Improving  

E-Print Network [OSTI]

these are resonant gate drive [3]­[5], pulse frequency modulation (PFM) [6], and a hybrid Manuscript received, in the case of the variable-frequency methods, their potential for generating undesired noise at subharmonicsIEEE POWER ELECTRONICS LETTERS 1 A Constant-Frequency Method for Improving Light-Load Efficiency

Lee, Thomas H.

437

Capacity allocation of a hybrid energy storage system for power system peak shaving at high wind power penetration level  

Science Journals Connector (OSTI)

Abstract High wind power penetration in power system leads to a significant challenge in balancing power production and consumption due to the intermittence of wind. Introducing energy storage system in wind energy system can help offset the negative effects, and make the wind power controllable. However, the power spectrum density of wind power outputs shows that the fluctuations of wind energy include various components with different frequencies and amplitudes. This implies that the hybrid energy storage system is more suitable for smoothing out the wind power fluctuations effectively rather than the independent energy storage system. In this paper, we proposed a preliminary scheme for capacity allocation of hybrid energy storage system for power system peak shaving by using spectral analysis method. The unbalance power generated from load dispatch plan and wind power outputs is decomposed into four components, which are outer-day, intra-day, short-term and very short-term components, by using Discrete Fourier Transform (DFT) and spectral decomposition method. The capacity allocation can be quantified according to the information in these components. The simulation results show that the power rating and energy rating of hybrid energy storage system in partial smoothing mode decrease significantly in comparison with those in fully smoothing mode.

Pan Zhao; Jiangfeng Wang; Yiping Dai

2015-01-01T23:59:59.000Z

438

Technological developments to improve combustion efficiency and pollution control in coal-fired power stations in Japan  

SciTech Connect (OSTI)

In 1975, approximately 60 percent of all power generating facilities in Japan were oil fired. The oil crisis in the 1970s, however, led Japanese power utilities to utilize alternatives to oil as energy sources, including nuclear power, coal, LNG, and others. As a result, by 1990, the percentage of oil-fired power generation facilities had declined to approximately 31 percent. On the other hand, coal-fired power generation, which accounted for 5.7 percent of all facilities in 1975, increased its share to 7.5 percent in 1990 and is anticipated to expand further to 13 percent by the year 2000. In order to increase the utilization of coal-fired power generation facilities in Japan, it is necessary to work out thorough measures to protect the environment, mainly to control air pollution. The technologies that are able to do this are already available. The second issue is how to improve efficiency. In this chapter, I would like to introduce technological developments that improve efficiency and that protect the environment which have been implemented in coal-fired power stations in Japan. Examples of the former, include the atmospheric fluidized bed combustion (AFBC) boiler, the pressurized fluidized bed combustion (PFBC) boiler, and the ultra super-critical (USC) steam condition turbine, and an example of the latter is the dry deSOx/deNOx. Although details are not provided in this paper, there are also ongoing projects focusing on the development of technology for integrated gasification combined cycle generation, fuel cells and other systems undertaken by the government, i.e., the Ministry of International Trade and Industry (MITI), which is committed to the New Energy and Industrial Technology Development Organization (NEDO).

Miyasaka, Tadahisa

1993-12-31T23:59:59.000Z

439

China's Renewable Energy Law and its impact on renewable power in China: Progress, challenges and recommendations for improving implementation  

Science Journals Connector (OSTI)

Beginning in 2006, China experienced a rapid growth in its renewable energy resources, particularly wind power, placing it among the world's leading countries in terms of renewable energy installation and generation. This growth was greatly enabled by the renewable energy policy framework created by its landmark Renewable Energy Law, passed in 2005 and amended in 2009, which established key policies including: national renewable energy targets; a mandatory connection and purchase policy; a national feed-in tariff system; and arrangements for cost-sharing and funding of renewable energy incentives. This paper describes the mechanisms established by the Renewable Energy Law and its implementing regulations, as well as the challenges China continues to face in improving its renewable energy policy framework to improve integration and utilization of renewable energy sources. It also provides a comparison of the Chinese renewable energy policy framework with those in the European Union and United States. Finally, the paper provides recommendations for improving implementation of the Renewable Energy Law, with regard to implementing a renewable power quota system and priority dispatch policy, developing technical standards for connection of renewable resources with the grid, development of a more advanced feed-in tariff system, and central-local coordination of renewable energy development.

Sara Schuman; Alvin Lin

2012-01-01T23:59:59.000Z

440

IEEE TRANSACTIONS ON POWER SYSTEMS (ACCEPTED NOVEMBER 8, 2014) 1 Stochastic Reactive Power Management  

E-Print Network [OSTI]

response, and electric vehicles. Advances in photovoltaic (PV) inverters offer new opportunitiesIEEE TRANSACTIONS ON POWER SYSTEMS (ACCEPTED NOVEMBER 8, 2014) 1 Stochastic Reactive Power are being challenged by reverse power flows and voltage fluctuations due to renewable generation, demand

Giannakis, Georgios

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


441

Hybrid robust predictive optimization method of power system dispatch  

DOE Patents [OSTI]

A method of power system dispatch control solves power system dispatch problems by integrating a larger variety of generation, load and storage assets, including without limitation, combined heat and power (CHP) units, renewable generation with forecasting, controllable loads, electric, thermal and water energy storage. The method employs a predictive algorithm to dynamically schedule different assets in order to achieve global optimization and maintain the system normal operation.

Chandra, Ramu Sharat (Niskayuna, NY); Liu, Yan (Ballston Lake, NY); Bose, Sumit (Niskayuna, NY); de Bedout, Juan Manuel (West Glenville, NY)

2011-08-02T23:59:59.000Z

442

Power system comparison for the Pluto Express mission  

SciTech Connect (OSTI)

This paper presents a comparison of three advanced radioisotope power systems, along with a down sized RTG for the Pluto Express mission. These three advanced radioisotope power systems were the Radioisotope Alkali Metal Thermal--to-Electric Converter (RAMTEC), Radioisotope Stirling, and Radioisotope Thermophotovoltaic (RTPV). For the Pluto Express mission, the power requirement at the end of the 10-y mission is 74 We. It was found that all three advanced power systems could meet the required end of mission power with two General Purpose Heat Source (GPHS) modules. The RTG required six modules to meet the power requirement. Only the RAMTEC and RTPV met the mass goal of 9.5 kg. The AMTEC has a radiator area more than a factor of 10 lower than the Stirling and RTPV power systems, which simplifies spacecraft integration.

Harty, R.B. [Rockwell Aerospace, Canoga Park, CA (United States). Rocketdyne Div.

1995-12-31T23:59:59.000Z

443

Advanced Organic Vapor Cycles for Improving Thermal Conversion Efficiency in Renewable Energy Systems.  

E-Print Network [OSTI]

??The Organic Flash Cycle (OFC) is proposed as a vapor power cycle that could potentially increase power generation and improve the utilization efficiency of renewable… (more)

Ho, Tony

2012-01-01T23:59:59.000Z

444

Power Electronic Thermal System Performance and Integration ...  

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

More Documents & Publications Motor Thermal Control Thermal Stress and Reliability for Advanced Power Electronics and Electric Machines Integrated Vehicle Thermal Management...

445

For the Federal Columbia River Power System  

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

its products and services . BPA markets wholesale electrical power from 31 federal hydro projects in the Columbia River Basin, one nonfederal nuclear plant and several small...

446

Automated Surface Observing System: Standby Power Options  

Energy Savers [EERE]

for pilot briefing, air traffic control, & weather forecasters Public access dial phone lines Initially UPS designed to back 3 options under consideration to extend backup power to...

447

Catalog of DC Appliances and Power Systems  

E-Print Network [OSTI]

en.wikipedia.org/wiki/Variable-frequency_drive. Garbesi,are generally powered by variable frequency drives.The typical variable frequency drive first rectifies the AC

Garbesi, Karina

2012-01-01T23:59:59.000Z

448

Power system design | Princeton Plasma Physics Lab  

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

developing an advanced power switch Scientists at the U.S. Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL) are assisting General Electric Co. in...

449

High power density propulsion/power system for underwater applications  

SciTech Connect (OSTI)

This patent describes a drive system for an underwater vehicle utilizing open Rankine thermodynamic cycle system having water as working fluid; steam generation means for receiving the working fluid and converting the working fluid to steam; an energy converter adapted to receive the steam and drive a propulsion means; a mixing condenser adapted to receive the steam exits the energy converter and condense the steam to a liquid; means for introducing water into the mixing condensers from a source external to the Rankine cycle, the water mixing with the working fluid to form mixed work fluid.

Blau, A.

1992-06-02T23:59:59.000Z

450

Audit of Funding for Advanced Radioisotope Power Systems, IG-0413  

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

October 17, 1997 October 17, 1997 MEMORANDUM FOR THE SECRETARY FROM: John C. Layton Inspector General SUBJECT: INFORMATION: "Audit of Funding for Advanced Radioisotope Power Systems" BACKGROUND: The Department of Energy's (Department) Advanced Radioisotope Power Systems Program maintains the sole national capability and facilities to produce radioisotope power systems for the National Aeronautics and Space Administration (NASA), the Department of Defense, and other Federal agencies. For the past seven years the program emphasis has been on providing power systems for NASA's Cassini mission to Saturn, which was launched earlier this month. We initiated this audit to determine whether the

451

Multilevel Converters for Power System Applications J. S. Lai...  

Office of Scientific and Technical Information (OSTI)

Multilevel Converters for Power System Applications J. S. Lai' Oak Ridge National Laboratory Engineering Technology Division PO Box 2003, MS 7258 Oak Ridge, Tennessee 3783 1 F. 2....

452

AFTER A Framework for electrical power sysTems vulnerability...  

Open Energy Info (EERE)

Germany) Jump to: navigation, search Project Name AFTER A Framework for electrical power sysTems vulnerability identification, dEfense and Restoration Country Germany Coordinates...

453

Combined Heat and Power System Achieves Millions in Cost Savings...  

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

campus, which includes 750 buildings. Photo courtesy of Texas A&M University Combined Heat and Power System Achieves Millions in Cost Savings at Large University Recovery Act...

454

New Advanced System Utilizes Industrial Waste Heat to Power Water...  

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

Water Reuse ADVANCED MANUFACTURING OFFICE New Advanced System Utilizes Industrial Waste Heat to Power Water Purification Introduction As population growth and associated factors...

455

Combined Heat and Power System Enables 100% Reliability at Leading...  

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

Enables 100% Reliability at Leading Medical Campus - Case Study, 2013 Combined Heat and Power System Enables 100% Reliability at Leading Medical Campus - Case Study, 2013 Thermal...

456

Combined Heat and Power System Achieves Millions in Cost Savings...  

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

Achieves Millions in Cost Savings at Large University - Case Study, 2013 Combined Heat and Power System Achieves Millions in Cost Savings at Large University - Case Study, 2013...

457

Combined Heat and Power System Enables 100% Reliability at Leading...  

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

buildings on nearly 1,000 acres. Photo courtesy of Thermal Energy Corporation Combined Heat and Power System Enables 100% Reliability at Leading Medical Campus Recovery Act...

458

An integrated optimal design method for utility power distribution systems.  

E-Print Network [OSTI]

??This dissertation presents a comprehensive and integrated design methodology to optimize both the electrical and the economic performance of a utility power distribution system. The… (more)

Fehr, Ralph E

2005-01-01T23:59:59.000Z

459

GCTool: Design, Analyze and Compare Fuel Cell Systems and Power...  

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

GCTool: Design, Analyze and Compare Fuel Cell Systems and Power Plants GCTool allows you to design, analyze, and compare different fuel cell configurations, including automotive,...

460

Demonstration of a Variable Phase Turbine Power System for Low...  

Office of Environmental Management (EM)

turbine geothermal ORC system A Revolutionary Hybrid Thermodynamic Cycle for Bianary Geothermal Power Free Flow Energy (TRL 1 2 3 Component) - Design and Development of a...

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


461

Power Electronic Thermal System Performance and Integration (Presentation)  

SciTech Connect (OSTI)

This presentation gives an overview of the status and FY09 accomplishments for the NREL Power Electronic Thermal System Performance and Integration Project.

Bennion, K.

2009-05-01T23:59:59.000Z

462

The system architecting process for a solar power satellite concept.  

E-Print Network [OSTI]

??This thesis discusses the system architecting process for a Solar Power Satellite (SPS) concept.The heuristic approach allows a spectrum of concepts to be narrowed to… (more)

Bidwell, Joseph Grady

2006-01-01T23:59:59.000Z

463

Thermal energy storage technologies and systems for concentrating solar power plants  

Science Journals Connector (OSTI)

This paper presents a review of thermal energy storage system design methodologies and the factors to be considered at different hierarchical levels for concentrating solar power (CSP) plants. Thermal energy storage forms a key component of a power plant for improvement of its dispatchability. Though there have been many reviews of storage media, there are not many that focus on storage system design along with its integration into the power plant. This paper discusses the thermal energy storage system designs presented in the literature along with thermal and exergy efficiency analyses of various thermal energy storage systems integrated into the power plant. Economic aspects of these systems and the relevant publications in literature are also summarized in this effort.

Sarada Kuravi; Jamie Trahan; D. Yogi Goswami; Muhammad M. Rahman; Elias K. Stefanakos

2013-01-01T23:59:59.000Z

464

Ocean Renewable Power Co (ORPC) (TRL 7 8 System) - TidGen (TM...  

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

Ocean Renewable Power Co (ORPC) (TRL 7 8 System) - TidGen (TM) Power System Commercialization Project Ocean Renewable Power Co (ORPC) (TRL 7 8 System) - TidGen (TM) Power System...

465

Researchers test novel power system for space travel  

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

Power system for space travel Power system for space travel Researchers test novel power system for space travel The research team recently demonstrated the first use of a heat pipe to cool a small nuclear reactor and power a Stirling engine. November 26, 2012 John Bounds of Los Alamos National Laboratory's Advanced Nuclear Technology Division makes final adjustments on the DUFF experiment, a demonstration of a simple, robust fission reactor prototype that could be used as a power system for space travel. DUFF is the first demonstration of a space nuclear reactor system to produce electricity in the United States since 1965. John Bounds of Los Alamos National Laboratory's Advanced Nuclear Technology Division makes final adjustments on the DUFF experiment, a demonstration of a simple, robust fission reactor prototype that could be used as a power

466

Rotary Mode Core Sample System availability improvement  

SciTech Connect (OSTI)

The Rotary Mode Core Sample System (RMCSS) is used to obtain stratified samples of the waste deposits in single-shell and double-shell waste tanks at the Hanford Site. The samples are used to characterize the waste in support of ongoing and future waste remediation efforts. Four sampling trucks have been developed to obtain these samples. Truck I was the first in operation and is currently being used to obtain samples where the push mode is appropriate (i.e., no rotation of drill). Truck 2 is similar to truck 1, except for added safety features, and is in operation to obtain samples using either a push mode or rotary drill mode. Trucks 3 and 4 are now being fabricated to be essentially identical to truck 2.

Jenkins, W.W.; Bennett, K.L.; Potter, J.D. [Westinghouse Hanford Co., Richland, WA (United States); Cross, B.T.; Burkes, J.M.; Rogers, A.C. [Southwest Research Institute (United States)

1995-02-28T23:59:59.000Z

467

SELFMONITORING DISTRIBUTED MONITORING SYSTEM FOR NUCLEAR POWER PLANTS (PRELIMINARY VERSION)  

E-Print Network [OSTI]

SELF­MONITORING DISTRIBUTED MONITORING SYSTEM FOR NUCLEAR POWER PLANTS (PRELIMINARY VERSION) Aldo and identification are extremely important activities for the safety of a nuclear power plant. In particular inside huge and complex production plants. 1 INTRODUCTION Safety in nuclear power plants requires

468

Analysis on DFIG Wind Power System Low-Voltage Ridethrough  

Science Journals Connector (OSTI)

Due to the double fed induction generator’s (DFIG) advantage of controlling active and reactive power independently and partial power converter, DFIG is becoming a popular type of wind power generation system. Nowadays, the grid code demands that ... Keywords: VSCF, DFIG, LVRT, Crowbar, Voltage sags

Yulong Wang; Jianlin Li; Shuju Hu; Honghua Xu

2009-04-01T23:59:59.000Z

469

POWER SCHEDULING IN A HYDROTHERMAL SYSTEM UNDER UNCERTAINTY  

E-Print Network [OSTI]

de­ composition. Numerical results are re­ ported for realistic data from a German power utility. Keywords: Power scheduling, uncertain elec­ trical load, stochastic Lagrangian decomposi­ tion, scenarioPOWER SCHEDULING IN A HYDRO­THERMAL SYSTEM UNDER UNCERTAINTY C.C. Carøe 1 , M.P. Nowak 2 , W. R

Römisch, Werner

470

PowerSystemsSimulation NSERC Industrial Research Chair in  

E-Print Network [OSTI]

, Aalborg Univ. and Univ. of Manitoba, email:skc@et.aau.dk A 400MW offshore wind power plant has been an offshore wind power plant to an onshore grid. To develop a PSCAD/EMTDC simulation model of an offshore WPP Faults in the Offshore Wind Power Grid System Layout and Single Line Diagram Main Objectives: VSC

Chaudhary, Sanjay

471

Topic 5: Renewable Power 1Networking and Distributed Systems  

E-Print Network [OSTI]

Communications and Control in Smart Grid 10 · Wave power is the energy from ocean surface waves. · Orbital motion the device to the ocean floor to hold it. cable Power modules Tubular section #12;Wave Energy Converter DrTopic 5: Renewable Power 1Networking and Distributed Systems Department of Electrical & Computer

Mohsenian-Rad, Hamed

472

Improving Motor and Drive System Performance – A Sourcebook for Industry  

Broader source: Energy.gov [DOE]

This sourcebook outlines opportunities to improve motor and drive systems performance, including practical guidelines, energy efficiency assessment instructions, and referrals to other information and assistance such as software, videos, and training opportunities.

473

NASA's Marshall Space Flight Center Improves Cooling System Performance  

Broader source: Energy.gov [DOE]

Case study details Marshall Space Flight Center's innovative technologies to improve water efficiency and cooling performance for one of its problematic cooling systems. The program saved the facility more than 800,000 gallons of water in eight months.

474

Rural Electrification Through Solar and Wind Hybrid System: A Self Sustained Grid Free Electric Power Source  

Science Journals Connector (OSTI)

In India, more than 200 million people live in rural areas without access to grid-connected power. A convenient & cost-effective solution would be hybrid power systems which can reduce dependency on grid supply, improve reliability. For a typical domestic load a solar –wind hybrid system is designed with charge controller to charge a conventional battery. To optimize system efficiency, a simple algorithm is developed for system sizing. Total cost of unit is calculated using life cycle cost analysis and payback peri

Vadirajacharya; P.K. Katti

2012-01-01T23:59:59.000Z

475

Research and Development for Novel Thermal Energy Storage Systems (TES) for Concentrating Solar Power (CSP)  

SciTech Connect (OSTI)

The overall objective was to develop innovative heat transfer devices and methodologies for novel thermal energy storage systems for concentrating solar power generation involving phase change materials (PCMs). Specific objectives included embedding thermosyphons and/or heat pipes (TS/HPs) within appropriate phase change materials to significantly reduce thermal resistances within the thermal energy storage system of a large-scale concentrating solar power plant and, in turn, improve performance of the plant. Experimental, system level and detailed comprehensive modeling approaches were taken to investigate the effect of adding TS/HPs on the performance of latent heat thermal energy storage (LHTES) systems.

Faghri, Amir; Bergman, Theodore L; Pitchumani, Ranga

2013-09-26T23:59:59.000Z

476

Microcomputer-based information feedback system for improving tractor efficiency  

E-Print Network [OSTI]

MICROCOMPUTER-BASED INFORMATION FEEDBACK SYSTEM FOR IMPROVING TRACTOR EFFICIENCY A Thesis by JOSEPH GROGAN Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE August 1985 Major Subject: Agricultural Engineering MICROCOMPUTER-BASED INFORMATION FEEDBACK SYSTEM FOR IMPROVING TRACTOR EFFICIENCY A Thesis JOSEPH GROGAN Approved as to style and content by: Dr. ill A. Stout (Chairman of Committee) Dr...

Grogan, Joseph

2012-06-07T23:59:59.000Z

477

Refractory metal alloys and composites for space power systems  

SciTech Connect (OSTI)

Space power requirements for future NASA and other United States missions will range from a few kilowatts to megawatts of electricity. Maximum efficiency is a key goal of any power system in order to minimize weight and size so that the space shuttle may be used a minimum number of times to put the power supply into orbit. Nuclear power has been identified as the primary power source to meet these high levels of electrical demand. One method to achieve maximum efficiency is to operate the power supply, energy conversion system, and related components at relatively high temperatures. NASA Lewis Research Center has undertaken a research program on advanced technology of refractory metal alloys and composites that will provide base line information for space power systems in the 1900`s and the 21st century. Basic research on the tensile and creep properties of fibers, matrices, and composites will be discussed.

Stephens, J.R.; Petrasek, D.W.; Titran, R.H.

1994-09-01T23:59:59.000Z

478

Emergence of energy storage technologies as the solution for reliable operation of smart power systems: A review  

Science Journals Connector (OSTI)

Abstract The ever increasing penetration of renewable energy systems (RESs) in today deregulated intelligent power grids, necessitates the use of electrical storage systems. Energy storage systems (ESSs) are helpful to make balance between generation and demand improving the performance of whole power grid. In collaboration with RESs, energy storage devices can be integrated into the power networks to bring ancillary service for the power system and hence enable an increased penetration of distributed generation (DG) units. This paper presents different applications of electrical energy storage technologies in power systems emphasizing on the collaboration of such entities with RESs. The role of \\{ESSs\\} in intelligent micropower grids is also discussed where the stochastic nature of renewable energy sources may affect the power quality. Particular attention is paid to flywheel storage, electrochemical storage, pumped hydroelectric storage, and compressed air storage and their operating principle are discussed as well. The application of each type in the area of power system is investigated and compared to others.

Sam Koohi-Kamali; V.V. Tyagi; N.A. Rahim; N.L. Panwar; H. Mokhlis

2013-01-01T23:59:59.000Z

479

Advanced Organic Vapor Cycles for Improving Thermal Conversion Efficiency in Renewable Energy Systems  

E-Print Network [OSTI]

1997. [15] R DiPippo, Geothermal Power Plants: Principles,Kalina, "New Binary Geothermal Power System," in ProceedingsConference on Geothermal Power Engineering, Sochi, Russia,

Ho, Tony

2012-01-01T23:59:59.000Z

480

Improvement of photovoltaic pumping systems based on standard frequency converters by means of programmable logic controllers  

SciTech Connect (OSTI)

Photovoltaic pumping systems (PVPS) based on standard frequency converters (SFCs) are currently experiencing a growing interest in pumping programmes implemented in remote areas because of their high performance in terms of component reliability, low cost, high power range and good availability of components virtually anywhere in the world. However, in practical applications there have appeared a number of problems related to the adaptation of the SFCs to the requirements of the photovoltaic pumping systems (PVPS). Another disadvantage of dedicated PVPS is the difficulty in implementing maximum power point tracking (MPPT). This paper shows that these problems can be solved through the addition of a basic industrial programmable logic controller (PLC) to the system. This PLC does not increase the cost and complexity of the system, but improves the adaptation of the SFC to the photovoltaic pumping system, and increases the overall performance of the system. (author)

Fernandez-Ramos, Jose [Departamento de Electronica, Universidad de Malaga, Complejo Tecnologico de Teatinos (2.2.39), 29071 Malaga (Spain); Narvarte-Fernandez, Luis; Poza-Saura, Fernando [Instituto de Energia Solar, Universidad Politecnica de Madrid (IES-UPM), Avenida Complutense s/n (204), 28040 Madrid (Spain)

2010-01-15T23:59:59.000Z

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


481

Grid?independent residential power systems  

Science Journals Connector (OSTI)

A self?powered gas?fired warm air furnace is evaluated as a candidate for the autonomous generation of electrical power. A popular commercial residential furnace is analyzed for electrical power requirements. Available energy conversion concepts are considered for this application and the thermophotovoltaic (TPV) option is selected due to reliability and cost. The design and the internal components peculiar to the TPV converter will be covered. Operating results including NO x emission will be summarized. This work was sponsored by the Basic Research Group Gas Research Institute Chicago IL.

Robert E. Nelson

1996-01-01T23:59:59.000Z

482

Current status of research on optimum sizing of stand-alone hybrid solar–wind power generation systems  

Science Journals Connector (OSTI)

Solar and wind energy systems are omnipresent, freely available, environmental friendly, and they are considered as promising power generating sources due to their availability and topological advantages for local power generations. Hybrid solar–wind energy systems, uses two renewable energy sources, allow improving the system efficiency and power reliability and reduce the energy storage requirements for stand-alone applications. The hybrid solar–wind systems are becoming popular in remote area power generation applications due to advancements in renewable energy technologies and substantial rise in prices of petroleum products. This paper is to review the current state of the simulation, optimization and control technologies for the stand-alone hybrid solar–wind energy systems with battery storage. It is found that continued research and development effort in this area is still needed for improving the systems’ performance, establishing techniques for accurately predicting their output and reliably integrating them with other renewable or conventional power generation sources.

Wei Zhou; Chengzhi Lou; Zhongshi Li; Lin Lu; Hongxing Yang

2010-01-01T23:59:59.000Z

483

Projects To Develop Novel Monitoring Networks for Advanced Power Systems  

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

To Develop Novel Monitoring Networks for Advanced Power To Develop Novel Monitoring Networks for Advanced Power Systems Selected Projects To Develop Novel Monitoring Networks for Advanced Power Systems Selected September 1, 2010 - 1:00pm Addthis Washington, DC - Five projects that will develop technologically sophisticated monitoring networks for advanced fossil energy power systems have been selected for continued research by the U.S. Department of Energy (DOE). The projects will support efforts by the Office of Fossil Energy's (FE) Advanced Research--Coal Utilization Science (CUS) Program to study novel approaches in model development and validation; monitoring refractory health; and wireless, self-powered sensors for advanced, next-generation power systems. They will monitor the status of equipment, materials

484

Intelligent Control of Energy-Saving Power Generation System  

Science Journals Connector (OSTI)

Highway power generation system which is environmentally friendly and sustainable provides an innovative method of energy conversion. It is also as a kind ... solar electric generation system integration. Develop...

Zhiyuan Zhang; Guoqing Zhang; Zhizhong Guo

2013-01-01T23:59:59.000Z

485

Cyber vulnerability in power systems operation and control  

Science Journals Connector (OSTI)

Modern power systems are composed of several interacting national systems synchronously or asynchronously interconnected over large geographic areas, and in the European case on a continental basis. In each country several areas are put under the control ...

Ettore Bompard; Paolo Cuccia; Marcelo Masera; Igor Nai Fovino

2012-01-01T23:59:59.000Z

486

Model Abstraction Techniques for Large-Scale Power Systems  

E-Print Network [OSTI]

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

487

Designing Optimal Heat and Power Systems for Industrial Processes  

E-Print Network [OSTI]

Industrial heat and power systems are complex and not fully understood as integrated systems. Within the context of the overall manufacturing process, they represent enormous capital investments and substantially contribute to the total operating...

Rutkowski, M. A.; Witherell, W. D.

488

Optimal monitoring and visualization of steady state power system operation  

E-Print Network [OSTI]

the Supervisory Control and Data Acquisition System (SCADA) and feeding them into state estimation function, state estimation can provide an estimate for all measured and unmeasured electrical quantities and network parameters of the entire power system, detect...

Xu, Bei

2009-06-02T23:59:59.000Z

489

Genetic Algorithm Based Damage Control For Shipboard Power Systems  

E-Print Network [OSTI]

approach for future reconfigurable shipboard power systems. The methodology should be capable of representing the dynamic performance (differential algebraic description), the steady state performance (algebraic description), and the system reconfiguration...

Amba, Tushar

2010-07-14T23:59:59.000Z

490

Green Scheduling: Scheduling of Control Systems for Peak Power Reduction  

E-Print Network [OSTI]

approach to fine-grained coordination of energy demand by scheduling energy consuming control systems of the system variables only, control system execution (i.e. when energy is supplied to the system-Scheduling; Energy Systems; Peak Power Reduction; Load Balancing; I. INTRODUCTION During a major sporting event

Pappas, George J.

491

Improved thermoelectric power output from multilayered polyethylenimine doped carbon nanotube based organic composites  

SciTech Connect (OSTI)

By appropriately selecting the carbon nanotube type and n-type dopant for the conduction layers in a multilayered carbon nanotube composite, the total device thermoelectric power output can be increased significantly. The particular materials chosen in this study were raw single walled carbon nanotubes for the p-type layers and polyethylenimine doped single walled carbon nanotubes for the n-type layers. The combination of these two conduction layers leads to a single thermocouple Seebeck coefficient of 96 ± 4??VK{sup ?1}, which is 6.3 times higher than that previously reported. This improved Seebeck coefficient leads to a total power output of 14.7 nW per thermocouple at the maximum temperature difference of 50?K, which is 44 times the power output per thermocouple for the previously reported results. Ultimately, these thermoelectric power output improvements help to increase the potential use of these lightweight, flexible, and durable organic multilayered carbon nanotube based thermoelectric modules in low powered electronics applications, where waste heat is available.

Hewitt, Corey A.; Montgomery, David S.; Barbalace, Ryan L.; Carlson, Rowland D.; Carroll, David L., E-mail: carroldl@wfu.edu [Center for Nanotechnology and Molecular Materials, Wake Forest University, 501 Deacon Blvd., Winston Salem, North Carolina 27105 (United States)

2014-05-14T23:59:59.000Z

492

Thermoacoustic power systems for space applications  

SciTech Connect (OSTI)

Future NASA deep-space missions will require radioisotope-powered electric generators that are just as reliable as current RTGs, but more efficient and of higher specific power (W/kg). Thermoacoustic engines can convert high-temperature heat into acoustic, or PV, power without moving parts at 30% efficiency. Consisting of only tubes and a few heat exchangers, these engines are low mass and promise to be highly reliable. Coupling a thermoacoustic engine to a low-mass, highly reliable and efficient linear alternator will create a heat-driven electric generator suitable for deep-space applications. Data will be presented on the first tests of a demonstration thermoacoustic engine designed for the 100-Watt power range.

Backhaus, S. N. (Scott N.); Tward, E. (Emanual); Pedach, M. (Michael)

2001-01-01T23:59:59.000Z

493

Economic evaluation of demand response in power systems with high wind power penetration  

Science Journals Connector (OSTI)

The penetration of wind power generation is expected to increase in power systems dramatically. The unpredictable nature of the wind generation poses an obstacle to high penetration of wind energy in the electric power systems. Demand response (DR) may be considered as an efficient approach to cope with the energy unbalances caused by the wind power intermittency. Fair mechanism for pricing of the DR may increase the demand-side participation which consequently facilitates wind power integration in the power systems. This paper focuses on the economic evaluation of the DR according to its potential for mitigating the wind power forecast error in the power system operation. Demand increase similar to the demand curtailment is considered as a DR resource and evaluated in this paper. For this purpose first an insight is provided into the power system operation under the high wind power penetration with the aim of extracting the DR benefits. Based on the DR benefits a mathematical model is developed to find the maximum monetary incentive for the DR that the system operator is willing to pay to the DR providers. In the proposed model DR's potential in reducing the cost of supplying load as well as its capability in reducing the cost of system reserve start up and shut down of units load shedding and wind power spillage are considered. The results of the proposed evaluation method provide valuable information for both the system operator and demand response providers. The proposed method is implemented on an example and a realistic case study and discussions on results are presented.

2014-01-01T23:59:59.000Z

494

Simulation study on lignite-fired power system integrated with flue gas drying and waste heat recovery – Performances under variable power loads coupled with off-design parameters  

Science Journals Connector (OSTI)

Abstract Lignite is a kind of low rank coal with high moisture content and low net heating value, which is mainly used for electric power generation. However, the thermal efficiency of power plants firing lignite directly is very low. Pre-drying is a proactive option, dehydrating raw lignite to raise its heating value, to improve the power plant thermal efficiency. A pre-dried lignite-fired power system integrated with boiler flue gas drying and waste heat recovery was proposed in this paper. The plant thermal efficiency could be improved by 1.51% at benchmark condition due to pre-drying and waste heat recovery. The main system performances under variable power loads were simulated and analyzed. Simulation results show that the improvement of plant thermal efficiency reduced to 1.36% at 50% full load. Moreover, the influences of drying system off-design parameters were simulated coupled with power loads. The variation tendencies of main system parameters were obtained. The influence of pre-drying degree (including moisture content of pre-dried lignite and raw lignite) on the plant thermal efficiency diminishes gradually with the decreasing power load. The dryer thermal efficiency and dryer exhaust temperature are also main factors and the influences on system parameters have been quantitatively analyzed.

Xiaoqu Han; Ming Liu; Jinshi Wang; Junjie Yan; Jiping Liu; Feng Xiao

2014-01-01T23:59:59.000Z

495

Electrical power systems protection and interdependencies with ICT  

Science Journals Connector (OSTI)

This section discusses the protection of electrical power systems (EPS) and its relation to the supporting Information and Communication Technologies (ICT) infrastructure. Several dimensions are addressed, ranging from the need of protection and available ... Keywords: critical infrastructures, disturbance, electrical power system, interdependencies, protection

George M. Milis; Elias Kyriakides; Antonis M. Hadjiantonis

2012-01-01T23:59:59.000Z

496

Reliability assessment of electrical power systems using genetic algorithms  

E-Print Network [OSTI]

of the dissertation, a GA based method for state sampling of composite generation-transmission power systems is introduced. Binary encoded GA is used as a state sampling tool for the composite power system network states. A linearized optimization load flow model...

Samaan, Nader Amin Aziz

2004-11-15T23:59:59.000Z

497

CyberPhysical System Security for the Electric Power Grid  

E-Print Network [OSTI]

INVITED P A P E R Cyber­Physical System Security for the Electric Power Grid Control in power research efforts aimed at enhancing the smart grid's application and infrastructure security. Finally­physical systems (CPS); cyber security; electric grid; smart grid; supervisory control and data acquisi- tion

Manimaran, Govindarasu

498

Power System Security in Market Clearing and Dispatch Mechanisms  

E-Print Network [OSTI]

costs while maintaining grid security; however, the dominant concern was system reliability, while costs1 Power System Security in Market Clearing and Dispatch Mechanisms Claudio A. Ca~nizares, Senior typical market clearing and dispatch mechanisms based on security- constrained (SC) optimal power flow

Cañizares, Claudio A.

499

ENERGY PAYBACK OPTIMIZATION OF THERMOELECTRIC POWER GENERATOR SYSTEMS  

E-Print Network [OSTI]

and the thermoelectric module should be performed. Active cooling and the design of the heat sink are customized to findENERGY PAYBACK OPTIMIZATION OF THERMOELECTRIC POWER GENERATOR SYSTEMS Kazuaki Yazawa Dept model for optimizing thermoelectric power generation system is developed and utilized for parametric

500

Optimal PMU Placement Evaluation for Power System Dynamic State Estimation  

E-Print Network [OSTI]

Optimal PMU Placement Evaluation for Power System Dynamic State Estimation Jinghe Zhang, Student--The synchronized phasor measurement unit (PMU), developed in the 1980s, is considered to be one of the most important devices in the future of power systems. The recent development of PMU technology provides high

Bishop, Gary