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1

Design of Micro-grid System Based on Renewable Power Generation Units  

E-Print Network (OSTI)

Abstract- Micro-grid system is currently a conceptual solution to fulfill the commitment of reliable power delivery for future power systems. Renewable power sources such as wind and hydro offer the best potential for emission free power for future micro-grid systems. This paper presents a micro-grid system based on wind and hydro power sources and addresses issues related to operation, control, and stability of the system. The micro-grid system investigated in this paper represents a case study in Newfoundland, Canada. It consists of a small hydro generation unit and a wind farm that contains nine variable- speed, double-fed induction generator based wind turbines. Using Matlab/Simulink, the system is modeled and simulated to identify the technical issues involved in the operation of a micro-grid system based on renewable power generation units. The operational modes, technical challenges and a brief outline of conceptual approaches to addressing some of the technical issues are presented for further investigation.

Dr. K. Ravich; M. Manasa; Mr. P. Yohan Babu; G. V. P. Anjaneyulu

2

Power management of hybrid micro-grid system by a generic centralized supervisory control scheme  

Science Journals Connector (OSTI)

Abstract This paper presents a generic centralized supervisory control scheme for the power management of multiple power converters based hybrid micro-grid system. The system consists of wind generators, photovoltaic system, multiple parallel connected power converters, utility grid, ac and dc loads. Power management of the micro-grid is performed under two cases: grid mode and local mode. Central supervisory unit (CSU) generates command signal to ensure the power management during the two modes. In local mode, the dc loads in the ac–dc hybrid system can be controlled. In the case of grid mode operation, power flow between the utility grid and micro-grid is controlled. A novel feature of this paper is the incorporation of the multiple power converters. The generated command signal from the CSU can also control the operation of the multiple power converters in both grid and local modes. An additional feature is the incorporation of sodium sulfur battery energy storage system (NAS BESS) which is used to smooth the output power fluctuation of the wind farm. The effectiveness of the control scheme is also verified using real time load pattern. The simulation is performed in PSCAD/EMTDC.

Mir Nahidul Ambia; Ahmed Al-Durra; Cedric Caruana; S.M. Muyeen

2014-01-01T23:59:59.000Z

3

Grid Simulator for Power Quality Assessment of Micro-Grids  

E-Print Network (OSTI)

1 Grid Simulator for Power Quality Assessment of Micro-Grids Joaqu´in Eloy-Garc´iaa , Juan C-to-back to a 380 V three-phase grid and feeding a micro-grid composed of two inverter interfaced distributed of the simulator. Finally, a case study is presented by testing a micro-grid. Index Terms Grid Simulator, Power

Vasquez, Juan Carlos

4

Optimal Operation for Cogenerating System of Micro-grid Network  

Science Journals Connector (OSTI)

This paper presents a mathematical model for optimal operating cogeneration of Micro-Grid Network. The electrical and thermal energy production ... solution of Optimal operation for cogenerating system of micro-grid

Phil-Hun Cho; Hak-Man Kim; Myong-Chul Shin…

2005-01-01T23:59:59.000Z

5

Investigation on Control Issues in Power Converters for Advanced Micro-Grid Operations  

Science Journals Connector (OSTI)

This paper investigates a novel design concept, in which a hybrid power interface system (HPIS) is constructed to work smartly in various micro-grid (MG) operations. Some distributed generation (...

Tsao-Tsung Ma

2014-01-01T23:59:59.000Z

6

Optimization of micro-grid system using MOPSO  

Science Journals Connector (OSTI)

Abstract Access to a reliable source of electricity is a basic need for any community as it can improve the living standards characterized via the improvement of healthcare, education, and the local economy at large. There are two key factors to consider when assessing the appropriateness of a micro-grid system, the cost-effectiveness of the system and the quality of service. The tradeoff between cost and reliability of the system is a major compromise in designing hybrid systems. In this way, optimization of a Hybrid Micro-Grid System (HMGS) is investigated. A hybrid wind/PV system with battery storage and diesel generator is used for this purpose. The power management algorithm is applied to the load, and the Multi-Objective Particle Swarm Optimization (MOPSO) method is used to find the best configuration of the system and for sizing the components. A set of recent hourly wind speed data from three meteorological stations in Iran, namely: Nahavand, Rafsanjan, and Khash, are selected and tested for the optimization of HMGS. Despite design complexity of the aforementioned systems, the results show that the MOPSO optimization model produces appropriate sizing of the components for each location. It is also suggested that the use of HMGS can be considered as a good alternative to promote electrification projects and enhance energy access within remote Iranian areas or other developing countries enjoying the same or similar climatic conditions.

Hanieh Borhanazad; Saad Mekhilef; Velappa Gounder Ganapathy; Mostafa Modiri-Delshad; Ali Mirtaheri

2014-01-01T23:59:59.000Z

7

Unbalanced Three-Phase Power Flow Calculation Based on Newton Method for Micro-Grid  

Science Journals Connector (OSTI)

Because of the connection of distributed generation to energy complementary micro-grid, there are multi-supplying points and loop ... power flow calculation based on Newton method for micro-grid is presented, in ...

Jiang Guixiu; Shu Jie; Wu Zhifeng…

2012-01-01T23:59:59.000Z

8

CARNEGIE MELLON UNIVERSITY Electric Power Micro-grids: Opportunities and Challenges  

E-Print Network (OSTI)

CARNEGIE MELLON UNIVERSITY Electric Power Micro-grids: Opportunities and Challenges for an Emerging;Electric Power Micro-grids: Barriers and opportunities for an emerging distributed energy architecture ii the value of DERs is the micro-grid architecture, which builds on conventional continuous-use DER

9

Anforderungen an den Energie-und Leistungsumsatz der POWER TO GAS-Einheit im MICRO GRID eines industriellen Produktionsstandortes  

E-Print Network (OSTI)

Anforderungen an den Energie- und Leistungsumsatz der POWER TO GAS- Einheit im MICRO GRID eines MICRO GRID angeschlossenen elektrischen Energiespeicher und eine ,,POWER TO GAS" -Anlage kompensiert werden. Die ,,POWER TO GAS"­ Anlage entnimmt dem MICRO GRID überschüssige elektrische Energie zur

Paderborn, Universität

10

Power Characteristics of a Fuel Cell Micro-grid with Wind Power Generation  

Science Journals Connector (OSTI)

A micro-grid technique is predicted to be effective with ... , when renewable energy is connected to a micro-grid, there is potential to reduce the amount ... discharge [21, 22, 91]. A micro-grid has an interconn...

2009-01-01T23:59:59.000Z

11

Methods of integrating a high penetration photovoltaic power plant into a micro grid.  

SciTech Connect

The island of Lanai is currently one of the highest penetration PV micro grids in the world, with the 1.2 MWAC La Ola Solar Farm operating on a grid with a peak net load of 4.7 MW. This facility interconnects to one of Lanai's three 12.47 kV distribution circuits. An initial interconnection requirements study (IRS) determined that several control and performance features are necessary to ensure safe and reliable operation of the island grid. These include power curtailment, power factor control, over/under voltage and frequency ride through, and power ramp rate limiting. While deemed necessary for stable grid operation, many of these features contradict the current IEEE 1547 interconnection requirements governing distributed generators. These controls have been successfully implemented, tested, and operated since January 2009. Currently, the system is producing power in a curtailed mode according to the requirements of a power purchase agreement (PPA).

Stein, Joshua S.; Johnson, Lars (SunPower Corporation, Richmond, CA); Nelson, Lauren (SunPower Corporation, Richmond, CA); Lenox, Carl (SunPower Corporation, Richmond, CA); Johnson, Robert. (SunPower Corporation, Richmond, CA)

2010-06-01T23:59:59.000Z

12

Abstract -This paper presents the coordinated control of distributed energy storage systems (DESSs) in DC micro-grids.  

E-Print Network (OSTI)

) in DC micro-grids. In order to balance the state-of-charge (SoC) of each energy storage unit (ESU--Droop control; distributed energy storage system (DESS); DC micro-grids; state-of-charge (SoC) I. INTRODUCTION ith the objective to electrify remote areas and energy islands, the micro-grid concept is gaining more

Vasquez, Juan Carlos

13

Modelling of a smart micro grid with renewable energy for rural area based on power line communication  

Science Journals Connector (OSTI)

Renewable energy conversion systems are main factor driving research on smart grid technology. Smart grid represents the paradigm to enable highly efficient power generation, transmission, distribution and consumption from the source to consumer. Bangladesh is facing energy crisis like other developing countries. High energy demands and environmental concerns force the transformation of existing power grid into smart micro grid. This paper proposes power line communication-based (PLC) platform on dynamic demand response and distributed generation including renewable power generation management approach in the context of smart micro grid model for residential and industrial consumptions. The implementation of smart micro grid to a rural area promotes the utilisation of renewable resources such as solar and wind energy. In this model, deployed PLC networks, data management system to integrate sensors, switchgears, transformers and other utility devices are used to interconnect smart homes to smart grids. Analytical results show the effectiveness of the proposed system to optimise residential renewable energy generation and smart meters to improve electrical grid control and energy conservation system.

Md. Atikur Rahman Sarker; Ken Nagasaka

2013-01-01T23:59:59.000Z

14

Renewable generation and demand response integration in micro-grids: development of a new energy management and control system  

Science Journals Connector (OSTI)

The aim of this research resides in the development of an energy management and control system to control a micro-grid based on the use of renewable generation and demand resources to introduce the application of...

Carlos Álvarez-Bel; Guillermo Escrivá-Escrivá; Manuel Alcázar-Ortega

2013-11-01T23:59:59.000Z

15

Research of a self-tuning algorithm for industrial micro-grid power conversion  

Science Journals Connector (OSTI)

With more and more attention on the grid current harmonic in recent years, many control schemes of the Pulse Width Modulation Voltage Source Converter (PWM-VSC) have been investigated. Conventional PI controller has limitations in sensitivity subject to load and system parameter variation. Even the stability of the system can be threatened under a large and sudden load change. In this paper, the practical situation of a VSC for industrial Micro Grid (MG) is considered and an Artificial Neural Network (ANN) based control method is employed to solve the problem. Meanwhile, an online parameter tuning algorithm is introduced for its advantage of self-tuning and system character identification. The proposed control scheme is verified through simulation and prototype experiment. The experiment is performed to demonstrate the advantages of the proposed controller under different situations.

Jinbang Xu; Zhizhuo Wu; Anwen Shen; Junfeng Chen

2014-01-01T23:59:59.000Z

16

Off-grid Solar PV Power for Humanitarian Action: From Emergency Communications to Refugee Camp Micro-grids  

Science Journals Connector (OSTI)

Abstract The need for new innovative technologies to support humanitarian action is evident today. Efficient and economic technologies properly deployed and integrated should mitigate some of the potential negative social effects of poor refugee camp infrastructure engineering. The body of the paper identifies off-grid solar Photovoltaic (PV) and solar PV hybrid packaged systems that are applicable to emergency relief activities, refugee camp activities and micro-grid development. The paper's concentration on off-grid power, the description of these engineered systems by humanitarian activity and the identification of the different engineered packaged solutions is aimed at stimulating a discussion to help scale more appropriate technologies for humanitarian action. The paper concludes with a discussion of present and future private sector business strategies to support scalability of this new and growing market.

Joseph Franceschi; Jaron Rothkop; Gabriel Miller

2014-01-01T23:59:59.000Z

17

State Estimation of the Micro-grid  

Science Journals Connector (OSTI)

For the goal of actual needs of power companies, this chapter develops a state estimation procedure of the micro-grid, using branch currents as state variables, ... In this chapter, an IEEE-33 nodes micro-grid is...

Jinling Lu; Guodong Zhu; Yuyang Miao

2014-01-01T23:59:59.000Z

18

Fault Diagnosis of Micro-grid Based on Petri Net  

Science Journals Connector (OSTI)

Micro-grid is the next generation of distribution system, ... 2010). This chapter analyzes the characteristics of Micro-grid and describes the typical form of Micro-grid. Considering the requirements of protectio...

Hongxia Wu; Guoming Yang; Ailing Zhang…

2014-01-01T23:59:59.000Z

19

Renewable Energy Sources Optimization: A Micro-Grid Model Design  

Science Journals Connector (OSTI)

Abstract This paper analyzes the possibility to develop the simple micro-grid model in optimizing the utilization of local renewable energy for on-grid area. The proposed micro-grid model integrates the power plants driven by renewable energy sources employing micro hydro (MHP) and photovoltaic system (PV) which is connected to grid system. This model is analyzed using HOMER and MATLAB software. Based on the load profiles and the availability of water resources, the HOMER simulates the proposed micro-grid model with three options of MHP capacity. The simulation results show that the micro-grid model with the largest capacity MHP produced the lowest energy cost, greatest reduction of CO2 emission, and largest fraction of renewable energy. However, these result required the expensive initial capital cost. In addition, the PV power generation was always recommended with a minimum capacity. Hence, MATLAB results show the performances of the power plants with renewable energy sources were used maximally.

R. Nazir; H.D. Laksono; E.P. Waldi; E. Ekaputra; P. Coveria

2014-01-01T23:59:59.000Z

20

Progress and problems in micro-grid protection schemes  

Science Journals Connector (OSTI)

Abstract Globally, gradual depletion of fossil fuel resources, poor energy efficiency and environmental pollution are among the main problems faced in the conventional power system. This leads to a new trend of generating power locally by using Distributed Energy Resources (DERs) at distribution voltage level. The concept of micro-grid has appeared as an attractive alternative for integration of \\{DERs\\} in the distribution networks which has numerous advantages in terms of reliability and power quality. Despite the advantages, several challenges are still hindering the development of micro-grids. One of the challenges is micro-grid protection, and to resolve this, researchers have been working to develop different protection schemes. The objective of this study is to review previous research works on the existing protection strategies deployed in addressing micro-grid protection issues in both grid-connected and islanded mode of operation.

Sohrab Mirsaeidi; Dalila Mat Said; Mohd. Wazir Mustafa; Mohd. Hafiz Habibuddin; Kimia Ghaffari

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "micro-grid power systems" 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

An optimization model for regional micro-grid system management based on hybrid inexact stochastic-fuzzy chance-constrained programming  

Science Journals Connector (OSTI)

Abstract Micro-grid system management considering air pollutant control and carbon dioxide (CO2) mitigation is a challenging task, since many system parameters such as electric demand, resource availability, system cost as well as their interrelationships may appear uncertain. To reflect these uncertainties, effective inexact system-analysis methods are desired. In this study, a hybrid inexact stochastic-fuzzy chance-constrained programming (ITSFCCP) was developed for micro-grid system planning, and interval-parameter programming (IPP), two-stage stochastic programming (TSP) and fuzzy credibility constrained programming (FCCP) methods were integrated into a general framework to manage pollutants and CO2 emissions under uncertainties presented as interval values, fuzzy possibilistic and stochastic probabilities. Moreover, FCCP allowed satisfaction of system constraints at specified confidence level, leading to model solutions with the lowest system cost under acceptable risk magnitudes. The developed model was applied to a case of micro-grid system over a 24-h optimization horizon with a real time and dynamic air pollutant control, and total amount control for CO2 emission. Optimal generation dispatch strategies were derived under different assumptions for risk preferences and emission reduction goals. The obtained results indicated that stable intervals for the objective function and decision variables could be generated, which were useful for helping decision makers identify the desired electric power generation patterns, and CO2 emission reduction under complex uncertainties, and gain in-depth insights into the trade-offs between system economy and reliability.

L. Ji; D.X. Niu; M. Xu; G.H. Huang

2015-01-01T23:59:59.000Z

22

Equipment Plan of a Compound Interconnection Micro-grid Composed of Diesel Power Plants and a Fuel Cell  

Science Journals Connector (OSTI)

Installation of the fuel cell micro-grid in an urban area is the technology ... Generally, as for the introduction of a micro-grid in a city area, the following points ... fuel cell by connecting PEM-FC to a micro-grid

2009-01-01T23:59:59.000Z

23

Effect of wind generation system types on Micro-Grid (MG) fault performance during both standalone and grid connected modes  

Science Journals Connector (OSTI)

Abstract Recently, there are three wind generation (WG) system types. The first type is called Fixed Speed Wind Generation (FSWG) system, which employs squirrel cage induction generators. Double Fed Induction Generator (DFIG) is utilized in the second type. The third type is called Full Converter Wind Generation (FCWG) system, which is interfaced with Micro-Grid (MG) through a back to back converter. During fault occurrence, each WG has its performance and characteristics which are determined by the generator physical characteristics and the MG earthing system configuration. For some WG types, the fault current depends also on the control algorithm of the power converter. The main target of this paper is to investigate and estimate how the fault performance of MG during both standalone and grid-connected modes is influenced by the type of WG. It is found during standalone mode that the type of the employed WG has a dominant impact on the MG performance under fault disturbance. On the contrary, the type of the employed WG has a negligible effect on the MG fault performance during grid-connected mode. This is because the main grid contributes most of the fault current. Effects of earthing system type on MG performance are highlighted.

Rashad M. Kamel

2014-01-01T23:59:59.000Z

24

Distributed PI-Control with Applications to Power Systems Frequency Control  

E-Print Network (OSTI)

decentralization of power transmission systems, as well as the independence of micro-grids highlight the need

Dimarogonas, Dimos

25

Entwicklung eines Netzleitsystems fr das MICRO GRID eines industriellen Produktionsstandortes mit einem hohen Anteil  

E-Print Network (OSTI)

an das lokale MICRO GRID angeschlossenen elektrischen Energiespeicher und eine ,,POWER TO GAS" -Anlage

Paderborn, Universität

26

An optimized co-ordinated approach for harmonic minimization of Doubly Fed Induction Generator connected micro-grid system  

Science Journals Connector (OSTI)

Abstract This paper illustrates the biogeography based optimization (BBO) based selected harmonic elimination technique for \\{DFIGs\\} connected to a micro-grid. The lower order harmonics are individually eliminated in each DFIG outputs but the higher order harmonics are eliminated in such a way that the harmonics generated by one source is eliminated by the other after generating the same order of harmonics in opposite phase. The switching angles are computed off-line and stored in microcontroller memory in the form of look-up tables for on line application. The excitation power for the inverters is obtained from a photovoltaic (PV) panel. Proper simulations are executed for the proposed theory and subsequently supported by investigational verifications. Both the simulation and experiments agree well with the analytical formulation. The total harmonic distortion (THD) in the output is found to be within the stipulated limit.

Krishna Sarker; Debashis Chatterjee; S.K. Goswami

2015-01-01T23:59:59.000Z

27

Power Supply Synchronization without Communication  

E-Print Network (OSTI)

as Micro-Grid based Electrical Power Systems ­ MGEPS [2]; and in Parallel Connected Uninterruptible Power

Moehlis, Jeff

28

Employing two novel mechanical fault ride through controllers for keeping stability of fixed speed wind generation systems hosted by standalone micro-grid  

Science Journals Connector (OSTI)

Abstract This paper proposes and designs two novels Fault Ride Through (FRT) controllers for maintaining Fixed Speed Wind Generation system (FSWGs) stability during fault events. The first technique has been implemented by increasing the wind turbine blade pitch angle with maximum possible rate to reduce the mechanical extracted wind power and consequently suppress wind generation system acceleration. The second FRT technique has been verified by adapting gear ratio of wind generation system to run far from optimum maximum power point and help FRT process. Effectiveness of the two proposed FRT techniques has been proven by accurate simulation of the most severe disturbance conditions. Also, Results indicated that second technique gives faster response than the first one. Without employing any FRT technique, \\{FSWGs\\} cannot keep its stability and the standalone Micro-Grid (MG) transfers to the blackout mode. Implementation the two FRT techniques requires no additional hardware. Only, control algorithms need little modification to deal with fault event and help FRT process. This fact makes the two proposed FRT techniques are simple, practical and highly economical attractive.

Rashad M. Kamel

2014-01-01T23:59:59.000Z

29

Micro-grid Environmental Economic Dispatch Using Improved Linearly Decreasing Weight Particle Swarm Optimization  

Science Journals Connector (OSTI)

Comparing with large power grid, micro-grid is quite different in operation method, energy ... on the environmental economic dispatch of a simplified micro-grid which consists of photovoltaic generation, wind tur...

Gujing Han; Yunhong Xia; Wuzhi Min

2014-01-01T23:59:59.000Z

30

Policies and demonstrations of micro-grids in China: A review  

Science Journals Connector (OSTI)

Abstract Micro-grids are effective concepts and systems to interface renewable and sustainable energy resources into utility, which has been paid significant attention. In this paper, the policies and demonstrations of micro-grids for researches and developments, as well as practical applications in China have been comprehensively reviewed. Many recent policies on renewable energy and micro-grids are summarized, which have been guiding and contributing the development of micro-grids in China. Additionally, the available micro-grids demonstrations in China are also introduced in detail. Finally, the emergency necessaries and trends of micro-grid applications in China have been concluded.

Zheng Zeng; Rongxiang Zhao; Huan Yang; Shengqing Tang

2014-01-01T23:59:59.000Z

31

Specialized micro grid (IDAPS) for intelligently managing customer-owned DER's  

Science Journals Connector (OSTI)

The electrical power system is an enabling infrastructure that supports the operation of other critical infrastructures and thus the economic well being of a nation. It is, therefore, very important to design for resiliency and autonomous reconfigurability ... Keywords: intelligent distributed autonomous power system (IDAPS), intelligent micro grid, web based technology

Jarupula Somlal

2010-07-01T23:59:59.000Z

32

Towards understanding the benefits and challenges of Smart/Micro-Grid for electricity supply system in Nigeria  

Science Journals Connector (OSTI)

Abstract The poor state of electricity supply system in Nigeria is threatening the welfare and security of life and properties of millions of individuals with adverse economic consequences for the country. The inadequacy of the national grid, especially the inability of the electricity generation capacity to match increasing demand in the country has led to increasing agitation for increased penetration of renewable energy sources (RESs) into the electricity supply mix. While great attention has been focused on the potential of \\{RESs\\} for electricity generation in the country, little or no attention has been given to the application of Smart/Micro-Grid (SM-G) technologies to the ageing Nigeria grid infrastructures and electrification of the rural areas. The aim of this paper is to bring into focus the benefits and challenges of enabling SM-G in the electricity supply system in Nigeria. SM-G will bring benefits to the electricity stakeholders in form of improvements in reliability, efficiency, economics, environment, security and safety. The paper gives an overview and reviews the current state of the electricity supply system in the country. It discusses the SM-G concepts and associated technologies, and highlights how they can help address the electricity problems in the country. The challenges of applying these concepts in Nigeria context are also discussed. Enabling SM-G in the country will not only lead to improvement in the quality, efficiency and reliability of the electricity grid, but also promote the provision of electricity supply to the remote rural areas using RESs.

Joseph O. Dada

2014-01-01T23:59:59.000Z

33

Synthesis of Droop-Based Distributed Generators in a Micro Grid System  

Science Journals Connector (OSTI)

Distributed Generation (DG) systems are being increasingly favored for meeting the ever-growing demands of electrical energy and smart grids. Today’s DG technologies include energy sources such as conventional...

Mahesh S. Illindala

2012-01-01T23:59:59.000Z

34

Micro-grids: Practical applications of grid technology to small distributed collaborations  

E-Print Network (OSTI)

Micro-Grids: Practical Applications of Grid Technology toof the normal use of the micro-grid we have been describing.Grid system that was used in the Matisse project. MEMS Technology Micro-

Lee, Jason R.

2001-01-01T23:59:59.000Z

35

Small-signal dynamic model of a micro-grid including conventional and electronically  

E-Print Network (OSTI)

Small-signal dynamic model of a micro-grid including conventional and electronically interfaced-signal modelling of a micro-grid system that includes conventional (rotating machine) and electronically interfaced deviations in the overall system model and provides a methodology for the analysis of autonomous micro-grid

Lehn, Peter W.

36

Three fault ride through controllers for wind systems running in isolated micro-grid and Effects of fault type on their performance: A review and comparative study  

Science Journals Connector (OSTI)

Abstract This paper presents survey about Fault Ride Through (FRT) techniques and controllers which employed with all wind generation system types. After presenting a comprehensive FRT survey, paper proposes three Fault Ride Through (FRT) controllers for keeping stability of Fixed Speed Wind Generation (FSWG) system serving in isolated Micro-Grid (MG). The first controller has been implemented by inserting Superconductor Fault Current Limiter (SFCL) in series with wind generator terminals during fault instant. The second proposed FRT controller is modifying the conventional Pitch Angle Controllers (PAC) to can spill and reduce high percentage of extracted mechanical wind power during and subsequent fault occurrence which in turns help stability improvement and restoration. Third FRT technique is performed by adapting the wind turbine gearbox ratio which forces the wind generation system to run far from the maximum power point. The best performance is obtained with the SFCL controller. Superior results are obtained when the three proposed FRT controllers are employed simultaneously. The three developed FRT controllers are simple, reliable and economical attractive. Effects of fault type on SFCL FRT controller performance are analyzed and investigated in details. The proposed SFCL FRT controller has been tested under single phase, double phase, phase to phase, and three phases to ground faults. Results display that the three phases to ground fault is the most severe type on SFCL FRT performance from stability point of view. On the other hand, double phase to ground fault is the most severe one from fluctuations and oscillations points of view. Parameters of the SFCL must be adjusted based on the three phases to ground fault. If the SFCL FRT controller is designed to can deal with three phases fault, it sure can deal with the other fault types successfully.

Rashad M. Kamel

2014-01-01T23:59:59.000Z

37

Expert energy management of a micro-grid considering wind energy uncertainty  

Science Journals Connector (OSTI)

Abstract Recently, the use of wind generation has rapidly increased in micro-grids. Due to the fluctuation of wind power, it is difficult to schedule wind turbines (WTs) with other distributed energy resources (DERs). In this paper, we propose an expert energy management system (EEMS) for optimal operation of \\{WTs\\} and other \\{DERs\\} in an interconnected micro-grid. The main purpose of the proposed EEMS is to find the optimal set points of \\{DERs\\} and storage devices, in such a way that the total operation cost and the net emission are simultaneously minimized. The EEMS consists of wind power forecasting module, smart energy storage system (ESS) module and optimization module. For optimal scheduling of WTs, the power forecasting module determines the possible available capacity of wind generation in the micro-grid. To do this, first, an artificial neural network (ANN) is used to forecast wind speed. Then, the obtaining results are used considering forecasting uncertainty by the probabilistic concept of confidence interval. To reduce the fluctuations of wind power generation and improve the micro-grid performances, a smart energy storage system (ESS) module is used. For optimal management of the ESS, the comprehensive mathematical model with practical constraints is extracted. Finally, an efficient modified Bacterial Foraging Optimization (MBFO) module is proposed to solve the multi-objective problem. An interactive fuzzy satisfying method is also used to simulate the trade-off between the conflicting objectives (cost and emission). To evaluate the proposed algorithm, the EEMS is applied to a typical micro-grid which consists of various DERs, smart ESS and electrical loads. The results show that the EEMS can effectively coordinate the power generation of \\{DERs\\} and ESS with respect to economic and environmental considerations.

Mehdi Motevasel; Ali Reza Seifi

2014-01-01T23:59:59.000Z

38

Localizing Micro-grids Research for the SE Asian Region  

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

Localizing Micro-grids Research for the SE Asian Region Localizing Micro-grids Research for the SE Asian Region Speaker(s): Cheng-Guan (Michael) Quah Valerie Choy Date: December 3, 2010 - 12:00pm Location: 90-3122 This presentation discusses developments (and test-beds) of micro-grids and distributed generation systems that are on-going in Singapore and poses the question as to whether simpler versions of such systems would be applicable to meet the challenges of rural electrification and energy poverty particularly those of its closest neighbors. Southeast Asia is an ethnically and culturally diverse region comprising more than 10 nations where 160 million people still live without electricity. Off-grid electrification for rural village communities and eco-resorts using DG and micro-grid systems are conceivable but many technical, political, cultural

39

Micro-Grids for Colonias (TX)  

SciTech Connect

This report describes the results of the final implementation and testing of a hybrid micro-grid system designed for off-grid applications in underserved Colonias along the Texas/Mexico border. The project is a federally funded follow-on to a project funded by the Texas State Energy Conservation Office in 2007 that developed and demonstrated initial prototype hybrid generation systems consisting of a proprietary energy storage technology, high efficiency charging and inverting systems, photovoltaic cells, a wind turbine, and bio-diesel generators. This combination of technologies provided continuous power to dwellings that are not grid connected, with a significant savings in fuel by allowing power generation at highly efficient operating conditions. The objective of this project was to complete development of the prototype systems and to finalize and engineering design; to install and operate the systems in the intended environment, and to evaluate the technical and economic effectiveness of the systems. The objectives of this project were met. This report documents the final design that was achieved and includes the engineering design documents for the system. The system operated as designed, with the system availability limited by maintenance requirements of the diesel gensets. Overall, the system achieved a 96% availability over the operation of the three deployed systems. Capital costs of the systems were dependent upon both the size of the generation system and the scope of the distribution grid, but, in this instance, the systems averaged $0.72/kWh delivered. This cost would decrease significantly as utilization of the system increased. The system with the highest utilization achieved a capitol cost amortized value of $0.34/kWh produced. The average amortized fuel and maintenance cost was $0.48/kWh which was dependent upon the amount of maintenance required by the diesel generator. Economically, the system is difficult to justify as an alternative to grid power. However, the operational costs are reasonable if grid power is unavailable, e.g. in a remote area or in a disaster recovery situation. In fact, avoided fuel costs for the smaller of the systems in use during this project would have a payback of the capital costs of that system in 2.3 years, far short of the effective system life.

Dean Schneider; Michael Martin; Renee Berry; Charles Moyer

2012-07-31T23:59:59.000Z

40

248 IEEE TRANSACTIONS ON POWER DELIVERY, VOL. 20, NO. 1, JANUARY 2005 Micro-Grid Autonomous Operation During  

E-Print Network (OSTI)

energy cost, and rapid technological developments of Manuscript received March 11, 2003; revised May 31, low-head hydro units and geothermal systems and ii) battery storage, capacitor storage, low- and high-speed flywheel systems and Supercon- ducting Magnetic Energy Storage (SMES) systems. While only DG units

Lehn, Peter W.

Note: This page contains sample records for the topic "micro-grid power systems" 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

Integration of Distributed Energy The CERTS MicroGrid Concept  

E-Print Network (OSTI)

Integration of Distributed Energy Resources The CERTS MicroGrid Concept CALIFORNIA ENERGY are being challenged to maintain the reliability of the grid and support economic transfers of power Consortium for Electric Reliability Technology Solutions White Paper on Integration of Distributed Energy

42

A Review of DC Micro-grid Protection  

Science Journals Connector (OSTI)

In this paper, an overview of DC micro-grid is described, which includes the status of DC micro-grid protection and its future development. The paper presents the key techniques of DC micro-grid protection. So fa...

Yuhong Xie; Jia Ning; Yanquan Huang…

2013-01-01T23:59:59.000Z

43

Micro-grid operation of inverter based distributed generation with voltage and frequency dependent loads  

E-Print Network (OSTI)

Distribution systems are experiencing increasing penetration of distributed generation (DG). One attractive option is to use the available DG capacity during utility outages by forming planned micro-grids. Load sharing ...

Zeineldin, H. H.

44

Photovoltaic micro-grid in a remote village in India: Survey based identification of socio-economic and other characteristics affecting connectivity with micro-grid  

Science Journals Connector (OSTI)

Abstract Load prediction is an essential component of the planning process of decentralized electricity supply systems based on micro-grids. However, accurate demand forecasting is a challenging task particularly for rural electrification projects. In this paper, actual operational data of a PV based micro-grid system in Sagar Island of India are analyzed in order to understand the role of different factors affecting households' connectivity, their electricity consumption and potential demands, thereby proposing an approach for planning (and designing) a micro-grid based decentralized electricity supply system. The analysis shows that potential demands for electricity within (as well as outside of) the current reach of the micro-grid are high and future expansion of the system would be effective by taking a 'phased approach’ of rural electrification. The analysis also shows that households with certain socio-economic characteristics have higher probability for connecting with the micro-grid and the relationship can be used to predict additional load requirements in case of grid extensions. Few recommendations for enhancing the connectivity further are also included in the discussion section of the paper.

Toru Kobayakawa; Tara C. Kandpal

2014-01-01T23:59:59.000Z

45

Energie-und Leistungsbilanzierung im MICRO GRID eines industriellen Produktionsstandortes mit  

E-Print Network (OSTI)

an das lokale MICRO GRID angeschlossenen elektrischen Energiespeicher und eine ,,POWER TO GAS" -Anlage ermöglichen. Aufgabe: Um einen effizienten Einsatz des BHKW's, des Speichers und der POWER TO GAS ­ Einheit zu Konzeptes zum wirtschaftlich effizienten Einsatz des BHKW's, des Speichers und der POWER TO GAS ­ Einheit 6

Paderborn, Universität

46

Micro-Grids for Colonias (OE 14.09) Kick-Off Meeting  

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

Micro-Grids for Colonias Micro-Grids for Colonias A Technology Development/Transfer Project Presentation to the DOE 2010 Smart Grid Peer Review Dean Schneider, Ph.D., PE Texas Center for Applied Technology Texas Engineering Experiment Station The Texas A&M University System d-schneider@tamu.edu The Problem * They call it "Luz Verde" - Colonias: Communities along the US - Mexico border lacking one or more essential services: water, wastewater, or electricity - Usually illegally subdivided - Small to large acreages - Low socioeconomic opportunities The Problem * Texas Model Subdivision Rules are in place to prevent additional Colonia development * Many residents economically cannot meet requirement in the near term A Solution * Install temporary micro-grid systems designed to provide essential levels of

47

Control Methods and Simulations of Micro-grid  

Science Journals Connector (OSTI)

The micro-grid’s control methods and simulations are presented...P/Q control is adopted. However, the control method is changed to U/f...control when it turns to the islanded mode. To demonstrate the operation of...

He-Jin Liu; Ke-Jun Li; Ying Sun; Zhen-Yu Zou; Yue Ma…

2011-01-01T23:59:59.000Z

48

A Virtual Laboratory for Micro-Grid Information and Communication Infrastructures  

E-Print Network (OSTI)

1 A Virtual Laboratory for Micro-Grid Information and Communication Infrastructures James Weimer reliability. Within the micro-grid, this requires identifying and testing ICT infrastructures infrastructures for micro-grid deployment, this work introduces the Virtual Micro- Grid Laboratory (VMGL

Johansson, Karl Henrik

49

WindTurbineGenerator Introduction of the Renewable Micro-Grid Test-Bed  

E-Print Network (OSTI)

Introduction of the Renewable Micro-Grid Test-Bed Dr. Wenxin Liu Smart Micro-grid and Renewable Technology University Topology of the Overall Experimental Platform Photo of the Micro-grid Test-bed Overview of the Micro-grid Test-Bed Cubicle #1: Main & PV Simulator PV Simulator: 3kW, 0~200V, 18A Unidirectional

Johnson, Eric E.

50

Micro-grid energy dispatch optimization and predictive control algorithms; A UC Irvine case study  

Science Journals Connector (OSTI)

Abstract Distributed power and energy resources are now being used to meet the combined electric power, heating, and cooling demands of many buildings. The addition of on-site renewables and their accompanying intermittency and non-coincidence requires even greater dynamic performance from the distributed power and energy system. Load following generators, energy storage devices, and predictive energy management are increasingly important to achieve the simultaneous goals of increased efficiency, reduced emissions, and sustainable economics. This paper presents two optimization strategies for the dispatch of a multi-chiller cooling plant with cold-water thermal storage. The optimizations aim to reduce both costs and emissions while considering real operational constraints of a plant. The UC Irvine campus micro-grid operation between January 2009 and December 2013 serves as a case study for how improved utilization of energy storage can buffer demand transients, reduce costs and improve plant efficiency. A predictive control strategy which forecasts campus demands from weather predictions, optimizes the plant dispatch, and applies feedback control to modify the plant dispatch in real-time is compared to best-practices manual operation. The dispatch optimization and predictive control algorithms are shown to reduce annual utility bill costs by 12.0%, net energy costs by 3.61%, and improve energy efficiency by 1.56%.

Dustin McLarty; Carles Civit Sabate; Jack Brouwer; Faryar Jabbari

2015-01-01T23:59:59.000Z

51

Short-term resource scheduling of a renewable energy based micro grid  

Science Journals Connector (OSTI)

Abstract In recent years due to the decreasing fossil fuel reserves and the increasing social stress, complex power networks have no other choices except to seek for alternative energy sources to eliminate the environmental issues caused by the traditional power systems. Thus, the scheduling of energy sources in a complex Micro-Grid (MG) comprising Micro Turbine (MT), Photo Voltaic (PV), Fuel Cell (FC), battery units and Wind Turbine (WT) has been investigated in this paper. Furthermore, a multi-objective framework is presented to simultaneously handle the two objective functions including minimization of total operation cost and minimization of emission. In this regard, Normal Boundary intersection (NBI) technique is employed to solve the proposed multi-objective problem and generate the Pareto set. Besides, a fuzzy satisfying method is used for decision making process. Afterward, the results obtained from the presented method are compared to the ones derived from other methods. Finally, it is verified that the proposed solution method results in better solutions for operation cost, emission and the execution time.

Maziar Izadbakhsh; Majid Gandomkar; Alireza Rezvani; Abdollah Ahmadi

2015-01-01T23:59:59.000Z

52

Load Response Characteristics of a Fuel Cell Micro-grid with Control of the Number of Units  

Science Journals Connector (OSTI)

The micro-grid is expected to reduce the discharge of ... in an emergency [21–23]. A micro-grid technique connects energy equipment, such as an ... cooperating piece of equipment. In forming a micro-grid, the coo...

2009-01-01T23:59:59.000Z

53

Study on Smart Energy Storage Technology and Control Strategy in Micro-Grid  

Science Journals Connector (OSTI)

Energy storage technology is an indispensable support for reliable operation of micro-grid (MG). Various forms of energy storage...

Xing-guo Tan; Shan Lu

2012-01-01T23:59:59.000Z

54

Preparation of Micro-grid for the Electron Microscopic Observation with High Magnification  

Science Journals Connector (OSTI)

......1958 letter LETTER Preparation of Micro-grid for the Electron Microscopic Observation...Japan L E T T E R Preparation of Micro-grid for the Electron Microscopic Observation...call this collodion net-work a micro-grid. Procedure of preparation (1......

S. Sakata

1958-01-01T23:59:59.000Z

55

Plug and Play Distributed Power Systems for Smart-Grid Connected Building |  

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

Emerging Technologies » Plug and Play Distributed Power Systems Emerging Technologies » Plug and Play Distributed Power Systems for Smart-Grid Connected Building Plug and Play Distributed Power Systems for Smart-Grid Connected Building The U.S. Department of Energy (DOE) is currently conducting research into plug-and-play distributed power systems for smart- grid connected buildings. Project Description This project seeks to advance and demonstrate a plug-and-play building energy micro-grid concept for integrating energy storage, loads, and sources at the building level with the external utility grid. The micro-grid demonstration is expected to include the following: Diesel synchronous generator Energy storage device Otis regenerative elevator system representing building critical loads Smart interface with the utility grid

56

Performance of Networked Control Systems under Sporadic Feedback  

E-Print Network (OSTI)

Regenerative Braking power inverter storage Micro-Grid Renewable Generation PHEV Smart Grid - Distributed

Lemmon, Michael

57

78 IEEE power & energy magazine july/august 2007 by Nikos Hatziargyriou,  

E-Print Network (OSTI)

of islanding. Micro- grid design and operation demand new skills and technology, while distribution systems

Hu, Fei

58

A Quasi-Feed-In-Tariff policy formulation in micro-grids: A bi-level multi-period approach  

Science Journals Connector (OSTI)

Abstract A Quasi-Feed-In-Tariff (QFIT) policy formulation is presented for micro-grids that integrates renewable energy generation considering Policy Makers? and Generation Companies? (GENCOs) objectives assuming a bi-level multi-period formulation that integrates physical characteristics of the power-grid. The upper-level problem corresponds to the PM, whereas the lower-level decisions are made by GENCOs. We consider that some \\{GENCOs\\} are green energy producers, while others are black energy producers. Policy makers incentivize green energy producers to generate energy through the payment of optimal time-varying subsidy price. The policy maker?s main objective is to maximize an overall social welfare that includes factors such as demand surplus, energy cost, renewable energy subsidy price, and environmental standards. The lower-level problem corresponding to the \\{GENCOs\\} is based on maximizing the players? profits. The proposed QFIT policy differs from the FIT policy in the sense that the subsidy price-based contracts offered to green energy producers dynamically change over time, depending on the physical properties of the grid, demand, and energy price fluctuations. The integrated problem solves for time-varying subsidy price and equilibrium energy quantities that optimize the system welfare under different grid and system conditions.

Ahmad F. Taha; Nadim A. Hachem; Jitesh H. Panchal

2014-01-01T23:59:59.000Z

59

Photocatalytic activity of ZnO films with micro-grid structure  

Science Journals Connector (OSTI)

A layer of zinc oxide (ZnO) micro-grid was deposited on the surface of ZnO ... ZnO film and the regular arrangement of the micro-grid. The microgrid ZnO has a lower specular ... degradation experiments on methyle...

Chunzhi Li; Wenwen Wang; Junying Zhang…

2009-09-01T23:59:59.000Z

60

Fabrication of phosphor micro-grids using proton beam lithography.  

SciTech Connect

A new nuclear microscopy technique called ion photon emission microscopy or IPEM was recently invented. IPEM allows analysis involving single ions, such as ion beam induced charge (IBIC) or single event upset (SEU) imaging using a slightly modified optical microscope. The spatial resolution of IPEM is currently limited to more than 10 {micro}m by the scattering and reflection of ion-induced photons, i.e. light blooming or spreading, in the ionoluminescent phosphor layer. We are developing a 'Microscopic Gridded Phosphor' (also called Black Matrix) where the phosphor nanocrystals are confined within the gaps of a micrometer scale opaque grid, which limits the amount of detrimental light blooming. MeV-energy proton beam lithography is ideally suited to lithographically form masks for the grid because of high aspect ratio, pattern density and sub-micron resolution of this technique. In brief, the fabrication of the grids was made in the following manner: (1) a MeV proton beam focused to 1.5-2 {micro}m directly fabricated a matrix of pillars in a 15 {micro}m thick SU-8 lithographic resist; (2) 7:1 aspect ratio pillars were then formed by developing the proton exposed area; (3) Ni (Au) was electrochemically deposited onto Cu-coated Si from a sulfamate bath (or buffered CN bath); (4) the SU-8 pillars were removed by chemical etching; finally (5) the metal micro-grid was freed from its substrate by etching the underlying Cu layer. Our proposed metal micro-grids promise an order-of-magnitude improvement in the resolution of IPEM.

Rossi, Paolo (University of Padova and INFN, Padova, Italy); Antolak, Arlyn J.; Provencio, Paula Polyak; Doyle, Barney Lee; Malmqvist, Klas (Lund Institute of Technology, Lund, Sweden); Hearne, Sean Joseph; Nilsson, Christer (Lund Institute of Technology, Lund, Sweden); Kristiansson, Per (Lund Institute of Technology, Lund, Sweden); Wegden, Marie (Lund Institute of Technology, Lund, Sweden); Elfman, Mikael (Lund Institute of Technology, Lund, Sweden); Pallon, Jan (Lund Institute of Technology, Lund, Sweden); Auzelyte, Vaida (Lund Institute of Technology, Lund, Sweden)

2005-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "micro-grid power systems" 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

CO2 Discharged from a Compound Micro-grid of a Hydrogenation City Gas Engine and a Fuel Cell  

Science Journals Connector (OSTI)

The introduction to a urban area of a micro-grid has the following advantages: (a) The ... built; and (c) with an independent micro-grid, the scale of equipment for distributing electricity ... is expected to bec...

2009-01-01T23:59:59.000Z

62

Optimal energy management of a micro-grid with renewable energy resources and demand response  

Science Journals Connector (OSTI)

With the introduction of smart energy grids and extensive penetration of renewable energy resources in distribution networks Micro-Grids (MGs) which are comprised of various alternative energy resources and Advanced Metering Infrastructure (AMI) systems for better implementation of DR programs are effectively employed. The design and development of Smart Energy Management Systems (SEMSs) for MGs are interesting and attractive research problems. In this paper a new SEMS architecture is presented to solve the multi-objective operation management and scheduling problem in a typical MG while considering different energy resource technologies Plug-in Hybrid Electric Vehicles (PHEVs) and DR programs. The energy management problem is formulated as a constrained mixed integer nonlinear multi-objective optimization problem in which the MG's total operating cost and net emissions must be minimized simultaneously. Three different optimization algorithms are used to solve the above mentioned problem and their outputs (Pareto optimal solutions) for the same problem are compared and analyzed.

M. Parvizimosaed; F. Farmani; A. Anvari-Moghaddam

2013-01-01T23:59:59.000Z

63

Stochastic scenario-based model and investigating size of battery energy storage and thermal energy storage for micro-grid  

Science Journals Connector (OSTI)

Abstract Energy storage systems (ESS) are designed to accumulate energy when production exceeds demand and to make it available at the user’s request. They can help match energy supply and demand, exploit the variable production of renewable energy sources (e.g. solar and wind), increase the overall efficiency of the energy system and reduce CO2 emissions. This paper presents a unit commitment formulation for micro-grid that includes a significant number of grid parallel PEM-Fuel Cell Power Plants (PEM-FCPPs) with ramping rate and minimum up and down time constraints. The aim of this problem is to determine the optimum size of energy storage devices like hydrogen, thermal energy and battery energy storages in order to schedule the committed units’ output power while satisfying practical constraints and electrical/thermal load demand over one day with 15 min time step. In order to best use of multiple PEM-FCPPs, hydrogen storage management is carried out. Also, since the electrical and heat load demand are not synchronized, it could be useful to store the extra heat of PEM-FCPPs in the peak electrical load in order to satisfy delayed heat demands. Due to uncertainty nature of electrical/thermal load, photovoltaic and wind turbine output power and market price, a two-stage scenario-based stochastic programming model, where the first stage prescribes the here-and-now variables and the second stage determines the optima value of wait-and-see variables under cost minimization. Quantitative results show the usefulness and viability of the suggested approach.

Sirus Mohammadi; Ali Mohammadi

2014-01-01T23:59:59.000Z

64

Photocatalytic performance of TiO2 thin films connected with Cu micro-grid  

Science Journals Connector (OSTI)

Aiming at reducing the recombination of photo-induced carriers in semiconductor photocatalytic process, we prepared TiO2...thin film with its surface modified by a connected Cu micro-grid via a microsphere lithog...

HaiLing Zhu; JunYing Zhang; TianMin Wang…

2009-08-01T23:59:59.000Z

65

An analytical literature review of the available techniques for the protection of micro-grids  

Science Journals Connector (OSTI)

Abstract During the last decade, besides the rapid increase in the penetration level of Distributed Generation (DG) units of micro-grids, the connection of micro-grids as a developed technology to the existing distribution networks has also attracted much attention. One of the major challenges associated with the protection of micro-grids is to devise a proper protection strategy that is effective in the grid-connected as well as the islanded mode of operation. In order to deal with the challenge, many researchers have recently proposed various techniques. The purpose of the current study is to provide a comprehensive review of the available protection techniques that are applied to address micro-grid protection issues in both grid-connected and islanded mode. The most up to date relevant options are described and categorized into specific clusters. A comparative analysis is carried out in which the advantages and disadvantages to each technique are assessed. Lastly, after the appraisement of the existing protection techniques, some conclusions and suggestions are put forward for the protection of micro-grids in the future.

Sohrab Mirsaeidi; Dalila Mat Said; Mohd. Wazir Mustafa; Mohd. Hafiz Habibuddin; Kimia Ghaffari

2014-01-01T23:59:59.000Z

66

Regional protection scheme designed for low-voltage micro-grids  

Science Journals Connector (OSTI)

Abstract No selective protection exists in the low-voltage level micro-grid integrated with DG presently. To deal with this problem, a new type of micro-grid protection scheme based on fault component is put forward. To implement this scheme, the micro-grid is divided into several regions, and each region is regarded as the target of protection. As a result, not only the scope of outage is decreased in accordance with the action of the protection, but the economic requirement of protection arrangement is met. Taking the negative sequence component as the basic characteristic quantity, a variety of asymmetric faults effectively can be identified successfully. Considering the adverse effects of unbalanced load and the switching of large capacity single phase load, a low-voltage supplement criterion is introduced. The effectiveness of this protection scheme is verified with EMTDC based simulation tests.

Xiangning Lin; Rui Zhang; Ning Tong; Xianshan Li; Ming Li; Dexian Yang

2015-01-01T23:59:59.000Z

67

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

68

Regenerative air energy storage for remote wind–diesel micro-grid communities  

Science Journals Connector (OSTI)

Abstract Remote communities beyond the reach of conventional electricity grids primarily rely on diesel generators (DG) to supply electricity. The systems in these communities are costly to operate because of the high price of transporting diesel to remote areas, and the low overall efficiencies caused by part-load operation of the DG. There is increasing interest to use wind energy converters (WEC) to supplement DG, thereby lowering the fuel consumption and operating costs. In order to use WEC to reduce the economic and environmental burden that DG have on remote communities, an energy storage system can be incorporated to buffer both generation and demand. This can avoid curtailment of the WEC, operate the DG at optimal efficiency, and reduce the necessary maximum installed generator capacities. Regenerative air energy storage (RAES) is a form of compressed air storage that is suitable for deployment in remote communities due to its ability to utilize waste heat from DG to boost the roundtrip efficiency of energy storage. This article presents a numerical model for a RAES system operating in a wind-diesel micro-grid. Simulations are run for varying WEC penetration levels and RAES energy capacities. The results show that in systems with WEC penetration less than 75%, increasing WEC capacity is more economic than adding a RAES system. Above penetration rates of 75%, the use of RAES achieves increased diesel savings with only slightly longer payback than simple wind-diesel systems. In the remote Canadian community case study, the optimal RAES system is 0.5 MW and 1 MW h with a WEC penetration rate of approximately 75%. A larger RAES results in further fuel savings, and thus environmental benefit, with only marginal increase in simple payback period.

Sebastian C. Manchester; Lukas G. Swan; Dominic Groulx

2014-01-01T23:59:59.000Z

69

Messdatenerfassung und Kommunikation im MICRO GRID eines industriellen Produktionsstandortes  

E-Print Network (OSTI)

Energiespeicher und eine ,,POWER TO GAS" -Anlage kompensiert werden. Die intelligente Koordination von Erzeugungs

Paderborn, Universität

70

Cost versus reliability sizing strategy for isolated photovoltaic micro-grids in the developing world  

Science Journals Connector (OSTI)

Abstract For many isolated regions in the developing world micro-grids which combine photovoltaic electricity generation and battery storage may represent the most reliable and least expensive form of energy service. Due to climate induced solar resource variations, achieving high reliability levels necessitates excess generation and storage capacity which can significantly increase the end consumer cost of energy. Due to severe financial limitations, many consumers in the developing world may prefer cost versus reliability trade-offs, as long as their basic energy needs are met. Defining reliability as the percent of electricity demand a grid can deliver, we utilize a time series energy balance algorithm at hourly resolution to create cost versus reliability curves of micro-grid performance. We then propose a micro-grid sizing strategy which enables designers with knowledge of local energy needs to determine the acceptability of potential micro-grids. Our strategy relies on visualizing simulation data at increasing levels of temporal resolution to determine where energy shortfalls occur and if they interfere with high priority energy demand. A case study is presented which utilizes the proposed methods. Results suggest that the methodology has the potential to reduce the cost of service while maintaining acceptable consumer reliability.

Mitchell Lee; Daniel Soto; Vijay Modi

2014-01-01T23:59:59.000Z

71

To grate a liquid into tiny droplets by its impact on a hydrophobic micro-grid F. Lapierre, F. Zoueshtiagh, V. Thomy, and A. Merlen  

E-Print Network (OSTI)

To grate a liquid into tiny droplets by its impact on a hydrophobic micro-grid P. Brunet, F (Dated: November 30, 2009) We report on experiments of drop impacting a hydrophobic micro-grid

Brunet, Philippe

72

Influence of Metal (Au, Ag) Micro-Grid on the Photocatalytic Activity of TiO2 Film  

Science Journals Connector (OSTI)

In this paper, we prepared TiO2...thin film with the surface modified by a connected Au micro-grid via a microsphere lithography strategy, and the...2 film. The photocatalytic activity improved as Au loading incr...

Chao Cai; Junying Zhang; Feng Pan; Weiwei Zhang; Hailing Zhu…

2008-06-01T23:59:59.000Z

73

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 54, NO. 1, FEBRUARY 2007 97 Distributed Intelligent Energy Management System  

E-Print Network (OSTI)

-ca- pacitors, and flywheels, makes the Microgrid a very promising option for on-site power generation are very important for the Micro- grid. The majority of microsources must be power electronic based and the grid. The advantages and considerations of HFAC system will be addressed in this paper along

Simões, Marcelo Godoy

74

To grate a liquid into tiny droplets by its impact on a hydrophobic micro-grid  

E-Print Network (OSTI)

We report on experiments of drop impacting a hydrophobic micro-grid, of typical spacing a few tens of $\\mu$m. Above a threshold in impact speed, liquid emerges to the other side, forming micro-droplets of size about that of the grid holes. We propose a method to produce either a mono-disperse spray or a single tiny droplet of volume as small as a few picoliters corresponding to a volume division of the liquid drop by a factor of up to 10$^5$. We also discuss the discrepancy of the measured thresholds with that predicted by a balance between inertia and capillarity.

Brunet, P; Zoueshtiagh, F; Thomy, V; Merlen, A

2009-01-01T23:59:59.000Z

75

Vehicle to Micro-Grid: Leveraging Existing Assets for Reliable Energy Management (Poster), NREL (National Renewable Energy Laboratory)  

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

to Micro-Grid: Leveraging Existing Assets for Reliable Energy Management to Micro-Grid: Leveraging Existing Assets for Reliable Energy Management Mike Simpson, Tony Markel, and Michael O'Keefe National Renewable Energy Laboratory INTRODUCTION OPPORTUNITY National Renewable Energy Laboratory Presented at the 4th International Conference on Integration of Renewable & Distributed Energy Resources, December 6-10 , 2010 * Albuquerque, New Mexico U.S. military bases, such as Fort Carson, are interested in opportunities to lower energy consumption and use renewable resources. l Electricity GCV Micro-Grid The Smith Electric Newton all-electric truck Fort Carson Photovoltaic Installation NREL PIX 17631 NREL PIX # 17394 Natural Gas Renewable Energy Truck Fleet Diesel Generators

76

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

77

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

78

Dynamic power systems for power generation  

SciTech Connect

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

79

Power System Dispatcher  

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

80

NSTX Electrical Power Systems  

SciTech Connect

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

Note: This page contains sample records for the topic "micro-grid power systems" 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

Wind power generating system  

SciTech Connect

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

82

A reliability assessment methodology for distribution systems with distributed generation  

E-Print Network (OSTI)

Generation and Micro-Grid Networks. v TABLE OF CONTENTS CHAPTER Page I INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . 1 A. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . 1 B. Distribution System Reliability... Generation and Micro-Grid Networks. v TABLE OF CONTENTS CHAPTER Page I INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . 1 A. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . 1 B. Distribution System Reliability...

Duttagupta, Suchismita Sujaya

2006-08-16T23:59:59.000Z

83

Modellierung der regelbaren Quellen, Lasten und Speicher im MICRO GRID eines industriellen Produktionsstandortes fr die Lastflussbe-  

E-Print Network (OSTI)

,,POWER TO GAS" -Anlage kompensiert werden. Die intelligente Koordination von Erzeugungs- und Regelverhalten der Solar- Wechselrichter, des Batteriespeichers und der POWER TO GAS ­ Einheit in einer

Paderborn, Universität

84

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

85

Power Systems Development Facility  

SciTech Connect

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

86

Wirtschaftliche Bereitstellung von Netzdienstleistungen durch das MICRO GRID eines industriellen Produktionsstandortes  

E-Print Network (OSTI)

GRID angeschlossenen elektrischen Energiespeicher und eine ,,POWER TO GAS" -Anlage kompensiert werden

Paderborn, Universität

87

Development of a thermal and electrical energy management in residential building micro-grid  

Science Journals Connector (OSTI)

Global warming and pressing concern about CO2 emission along with increasing fuel and oil cost have brought about great challenges for energy companies and homeowners. In this regard a potential candidate solution is widely used for Distributed Energy Resources which are capable of providing high quality low-cost heat and power to off-grid or remote facilities. To appropriately manage thermal and electrical energy a Smart Energy Management System (SEMS) with hierarchical control scheme has been presented. The developed SEMS model results in mixed integer non-linear programming optimization problem with the objective function of minimizing the operation cost as well as considering emissions. Moreover the optimization problem has been solved for deterministic and stochastic scheduling algorithms. The novelty of this work is basically reliant on using data mining approach to reduce forecasting error. Several case studies have been carried out to evaluate the performance of proposed data mining method on both energy cost and expected cost.

B. Vahidi

2014-01-01T23:59:59.000Z

88

COAL & POWER SYSTEMS  

NLE Websites -- All DOE Office Websites (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

89

Low-temperature fuel cell systems for commercial airplane auxiliary power.  

SciTech Connect

This presentation briefly describes the ongoing study of fuel cell systems on-board a commercial airplane. Sandia's current project is focused on Proton Exchange Membrane (PEM) fuel cells applied to specific on-board electrical power needs. They are trying to understand how having a fuel cell on an airplane would affect overall performance. The fuel required to accomplish a mission is used to quantify the performance. Our analysis shows the differences between the base airplane and the airplane with the fuel cell. There are many ways of designing a system, depending on what you do with the waste heat. A system that requires ram air cooling has a large mass penalty due to increased drag. The bottom-line impact can be expressed as additional fuel required to complete the mission. Early results suggest PEM fuel cells can be used on airplanes with manageable performance impact if heat is rejected properly. For PEMs on aircraft, we are continuing to perform: (1) thermodynamic analysis (investigate configurations); (2) integrated electrical design (with dynamic modeling of the micro grid); (3) hardware assessment (performance, weight, and volume); and (4) galley and peaker application.

Curgus, Dita Brigitte; Pratt, Joseph William; Akhil, Abbas Ali; Klebanoff, Leonard E.

2010-11-01T23:59:59.000Z

90

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

91

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

92

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

93

Power Systems Development Facility  

SciTech Connect

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

94

Main Injector power distribution system  

SciTech Connect

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

95

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...

96

Power Systems Development Facility  

SciTech Connect

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

97

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

98

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

99

An Improved Particle Swarm Optimization and Its Application for Micro-grid Economic Operation Optimization  

Science Journals Connector (OSTI)

A particle swarm optimization algorithm based on adaptive mutation and P systems is proposed to overcome trapping in local optimum solution and low optimization precision in this paper. At the same time, the prop...

Tao Liu; Jun Wang; Zhang Sun; Juan Luo…

2014-01-01T23:59:59.000Z

100

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.

Note: This page contains sample records for the topic "micro-grid power systems" 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

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

102

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

103

Power Systems Engineering  

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

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

104

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

105

Power System Electrician Construction  

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

106

Power System Electrician Maintenance  

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

107

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

108

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

109

Power System Operator  

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

110

Power System Electrician Maintenance  

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

111

Power System Electrician Maintenance  

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

112

Power System Electrician Maintenance  

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

113

Power System Electrician Maintenance  

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

114

Limits to power system growth  

SciTech Connect

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

115

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

116

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

117

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

118

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

119

NETL: Coal and Power Systems  

NLE Websites -- All DOE Office Websites (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

120

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

Note: This page contains sample records for the topic "micro-grid power systems" 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 Advanced Research  

SciTech Connect

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

122

Novette pulse-power-system description  

SciTech Connect

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

123

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

124

Sandia National Laboratories: power flow control system  

NLE Websites -- All DOE Office Websites (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,...

125

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...

126

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...

127

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...

128

Fuel Cells: Thermodynamic Engine to a Sustainable Energy Future Richard T. Carlin  

E-Print Network (OSTI)

sustainable, reliable electrical grids and micro-grids. Integration of fuel cell systems with renewable penetration; enhances grid and micro-grid power management; provides efficient electrical power generation from biomass; provides easily scalable micro-grid energy storage; and enables long

Levi, Anthony F. J.

129

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

130

Models for multimegawatt space power systems  

SciTech Connect

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

131

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

132

ADVANCED POWER SYSTEMS ASH BEHAVIOR IN POWER SYSTEMS  

SciTech Connect

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

133

Transformer modeling in power systems  

SciTech Connect

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

134

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

135

Career Map: Power Systems/Transmission Engineer  

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

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

136

Solar energy power generation system  

SciTech Connect

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

137

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

138

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

139

Sandia National Laboratories: Concentrating Solar Power Systems  

NLE Websites -- All DOE Office Websites (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,...

140

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

Note: This page contains sample records for the topic "micro-grid power systems" 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

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

142

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":""}]}

143

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

144

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

145

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

146

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

147

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:

148

Power Systems Integration Laboratory (Fact Sheet)  

SciTech Connect

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

149

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

150

New Horizons Mission Powered by Space Radioisotope Power Systems |  

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

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

151

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":""}]}

152

New Horizons Mission Powered by Space Radioisotope Power Systems |  

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

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

153

Materials in space nuclear power systems  

SciTech Connect

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

154

EMERY BIOMASS GASIFICATION POWER SYSTEM  

SciTech Connect

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

155

Space Power Systems | Department of Energy  

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

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

156

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

157

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)

158

POWER GRID DYNAMICS: ENHANCING POWER SYSTEM OPERATION THROUGH PRONY ANALYSIS  

SciTech Connect

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

159

Electric Power System Asset Optimization  

NLE Websites -- All DOE Office Websites (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

160

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

Note: This page contains sample records for the topic "micro-grid power systems" 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

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

162

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

163

Nova power systems: status and operating experience  

SciTech Connect

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

164

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

165

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

166

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

167

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

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

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

168

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...

169

Encouraging Combined Heat and Power in California Buildings  

E-Print Network (OSTI)

of Commercial-Building Micro-grids,” IEEE Transactions onEffects of Carbon Tax on Micro-grid Combined Heat and Powerin this work, picks optimal micro-grid 3 /building equipment

Stadler, Michael

2014-01-01T23:59:59.000Z

170

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

171

Flexibility in 21st Century Power Systems  

SciTech Connect

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

172

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

173

Project Profile: Brayton Solar Power Conversion System  

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

174

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

175

Comparing rig power transmission systems  

SciTech Connect

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

176

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

177

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

178

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

NLE Websites -- All DOE Office Websites (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

179

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

180

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

Note: This page contains sample records for the topic "micro-grid power systems" 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

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

182

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

183

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

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

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

184

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

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

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

185

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

186

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

187

Power electronics in electric utilities: HVDC power transmission systems  

SciTech Connect

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

188

Heatpipe space power and propulsion systems  

SciTech Connect

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

189

Catalog of DC Appliances and Power Systems  

NLE Websites -- All DOE Office Websites (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.

190

TFTR neutral-beam power system  

SciTech Connect

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

191

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":""}]}

192

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":""}]}

193

Doublet III neutral beam power system  

SciTech Connect

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

194

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

NLE Websites -- All DOE Office Websites (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

195

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

NLE Websites -- All DOE Office Websites (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

196

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

197

CX-004241: Categorical Exclusion Determination | Department of...  

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

Laboratory Purpose of this project is to fully develop prototype renewable based micro-grid power systems for communities (colonias) in the USMexico border region to supply...

198

CX-004242: Categorical Exclusion Determination | Department of...  

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

Laboratory Purpose of this project is to fully develop prototype renewable based micro-grid power systems for communities (colonias) in the USMexico border region to supply...

199

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":""}]}

200

Multi-Megawatt Power System Trade Study  

SciTech Connect

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 "micro-grid power systems" 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

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

202

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

203

Wind for Schools Project Power System Brief  

SciTech Connect

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

204

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

205

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

206

Direct current power transmission systems  

SciTech Connect

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

207

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":""}]}

208

Power systems | Princeton Plasma Physics Lab  

NLE Websites -- All DOE Office Websites (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

209

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

210

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

211

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

212

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

213

Space Power System Modeling with EBAL  

SciTech Connect

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

214

Heavy Vehicle Essential Power Systems Workshop  

SciTech Connect

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

215

Automated Surface Observing System: Standby Power Options  

NLE Websites -- All DOE Office Websites (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

216

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.

217

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

218

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...

219

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":""}]}

220

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":""}]}

Note: This page contains sample records for the topic "micro-grid power systems" 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

Superconductivity for electric power systems: Program overview  

SciTech Connect

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

Not Available

1995-02-01T23:59:59.000Z

222

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

223

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

224

TidGen Power System Commercialization Project  

SciTech Connect

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

225

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

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

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)...

226

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"

227

Western Area Power Administration. Combined power system financial statements  

SciTech Connect

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

228

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

229

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...

230

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...

231

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...

232

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

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

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...

233

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...

234

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...

235

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

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

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...

236

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...

237

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

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

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

238

A novel power block for CSP systems  

SciTech Connect

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

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

2010-10-15T23:59:59.000Z

239

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":""}]}

240

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":""}]}

Note: This page contains sample records for the topic "micro-grid power systems" 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

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":""}]}

242

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

243

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":""}]}

244

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

245

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

246

Power System Equipment Module Test Project  

SciTech Connect

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

247

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

248

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

249

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":""}]}

250

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":""}]}

251

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

252

The Applied Mathematics for Power Systems (AMPS)  

SciTech Connect

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

253

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

254

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

255

Princeton Plasma Physics Lab - Power systems  

NLE Websites -- All DOE Office Websites (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:

256

Design of isolated renewable hybrid power systems  

SciTech Connect

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

257

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

258

Merchant vessel advanced power systems. Final report  

SciTech Connect

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

259

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

260

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

Note: This page contains sample records for the topic "micro-grid power systems" 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

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

262

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

SciTech Connect

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

263

NREL: Concentrating Solar Power Research - Systems Analysis  

NLE Websites -- All DOE Office Websites (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

264

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

SciTech Connect

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

265

Vehicle System Impacts of Fuel Cell System Power Response Capability  

NLE Websites -- All DOE Office Websites (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

266

Filter system cost comparison for IGCC and PFBC power systems  

SciTech Connect

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

267

Nuclear power systems for Lunar and Mars exploration  

SciTech Connect

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

268

Tokamak power systems studies, FY 1985  

SciTech Connect

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

269

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":""}]}

270

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":""}]}

271

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

SciTech Connect

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

272

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

SciTech Connect

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

273

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

274

System aspects of a Space Nuclear Reactor Power System  

SciTech Connect

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

275

Test report : Princeton power systems prototype energy storage system.  

SciTech Connect

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

276

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":""}]}

277

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

278

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

279

Direct conversion nuclear reactor space power systems  

SciTech Connect

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

280

NETL: Coal & Power Systems - Contacts  

NLE Websites -- All DOE Office Websites (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

Note: This page contains sample records for the topic "micro-grid power systems" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
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281

Sun powers Libya cathodic-protection system  

SciTech Connect

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

282

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

283

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

284

Quality assurance program for isotopic power systems  

SciTech Connect

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

285

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

286

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":""}]}

287

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":""}]}

288

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":""}]}

289

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":""}]}

290

Distributed Power Electronics for PV Systems (Presentation)  

SciTech Connect

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

291

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

292

NREL: TroughNet - Parabolic Trough Power Plant System Technology  

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

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

293

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

294

Excise Tax Exemption for Solar- or Wind-Powered Systems  

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

295

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

296

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

SciTech Connect

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

297

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

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

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

298

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

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

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

299

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

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

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

300

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

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


301

Power Block R&D for CSP Systems  

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

302

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

303

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

304

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

305

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

306

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

SciTech Connect

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

307

Performance tuned radioisotope thermophotovoltaic space power system  

SciTech Connect

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

308

Power Systems Development Facility. Environmental Assessment  

SciTech Connect

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

309

Improved Refractories for IGCC Power Systems  

SciTech Connect

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

310

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

311

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

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

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....

312

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

313

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"

314

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

315

Coal pulverizing systems for power generation  

SciTech Connect

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

316

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

SciTech Connect

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

317

OE Power Systems Engineering Research & Development Program Partnerships |  

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

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

318

Flexibility in 21st Century Power Systems (Fact Sheet)  

SciTech Connect

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

319

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.

320

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"

Note: This page contains sample records for the topic "micro-grid power systems" 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

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

322

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

323

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

324

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

325

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

326

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"

327

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

328

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

329

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

330

Reliability assessment in active distribution networks with detailed effects of PV systems  

Science Journals Connector (OSTI)

A micro-grid is a cluster of distributed generators and...2]. The micro-grids are typically designed for bi-mode of ... operating in the grid connected mode, the micro-grid interchangeably imports and exports pow...

Zulu ESAU; Dilan JAYAWEERA

2014-03-01T23:59:59.000Z

331

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

332

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

333

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

334

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

335

Energy Storage Systems 2007 Peer Review - Power Electronics Presentations |  

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

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

336

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.

337

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

338

Control system and method for a universal power conditioning system  

SciTech Connect

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

339

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

340

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

SciTech Connect

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

Note: This page contains sample records for the topic "micro-grid power systems" 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

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

342

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

343

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

344

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

345

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

NLE Websites -- All DOE Office Websites (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

346

New and Underutilized Technology: Computer Power Management Systems |  

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

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

347

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

348

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

349

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

350

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

351

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

352

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

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

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

353

MIMO, x, w Unobserved, w ? 0 Exogenously Generated  

Science Journals Connector (OSTI)

A power micro-grid comprises three generators connected as shown in...8.2. Fig. 8.2 Power micro-grid ...

Paolo Caravani

2013-01-01T23:59:59.000Z

354

Energy Department Nuclear Systems Are Powering Mars Rover | Department of  

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

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

355

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

356

Energy Department Nuclear Systems Are Powering Mars Rover | Department of  

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

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

357

System-wide emissions implications of increased wind power penetration.  

SciTech Connect

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

358

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

359

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

360

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 "micro-grid power systems" 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

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

362

Power system comparison for the Pluto Express mission  

SciTech Connect

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

363

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...

364

For the Federal Columbia River Power System  

NLE Websites -- All DOE Office Websites (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...

365

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...

366

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

367

Power system design | Princeton Plasma Physics Lab  

NLE Websites -- All DOE Office Websites (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...

368

High power density propulsion/power system for underwater applications  

SciTech Connect

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

369

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

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

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

370

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....

371

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...

372

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...

373

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...

374

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

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

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...

375

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...

376

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...

377

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

378

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

NLE Websites -- All DOE Office Websites (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,...

379

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...

380

Power Electronic Thermal System Performance and Integration (Presentation)  

SciTech Connect

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

Note: This page contains sample records for the topic "micro-grid power systems" 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

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

382

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

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

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...

383

Researchers test novel power system for space travel  

NLE Websites -- All DOE Office Websites (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

384

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

385

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

386

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

387

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

388

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

389

Refractory metal alloys and composites for space power systems  

SciTech Connect

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

390

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

391

Projects To Develop Novel Monitoring Networks for Advanced Power Systems  

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

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

392

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

393

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

394

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

395

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.

396

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

397

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

398

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.

399

Thermoacoustic power systems for space applications  

SciTech Connect

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

400

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

Note: This page contains sample records for the topic "micro-grid power systems" 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

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

402

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

403

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

404

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.

405

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

406

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

407

Power Systems Engineering Research Center PSERC Background Paper  

E-Print Network (OSTI)

the shortest route from the generator to the load. Instead, electric power flows through the transmission system based on the relative resistance to power flows of each transmission line across the system. For example, just like an extension cord from the local hardware store, each transmission line has a maximum

408

PRESSURIZED SOLID OXIDE FUEL CELL/GAS TURBINE POWER SYSTEM  

SciTech Connect

Power systems based on the simplest direct integration of a pressurized solid oxide fuel cell (SOFC) generator and a gas turbine (GT) are capable of converting natural gas fuel energy to electric power with efficiencies of approximately 60% (net AC/LHV), and more complex SOFC and gas turbine arrangements can be devised for achieving even higher efficiencies. The results of a project are discussed that focused on the development of a conceptual design for a pressurized SOFC/GT power system that was intended to generate 20 MWe with at least 70% efficiency. The power system operates baseloaded in a distributed-generation application. To achieve high efficiency, the system integrates an intercooled, recuperated, reheated gas turbine with two SOFC generator stages--one operating at high pressure, and generating power, as well as providing all heat needed by the high-pressure turbine, while the second SOFC generator operates at a lower pressure, generates power, and provides all heat for the low-pressure reheat turbine. The system cycle is described, major system components are sized, the system installed-cost is estimated, and the physical arrangement of system components is discussed. Estimates of system power output, efficiency, and emissions at the design point are also presented, and the system cost of electricity estimate is developed.

W.L. Lundberg; G.A. Israelson; R.R. Moritz (Rolls-Royce Allison); S.E. Veyo; R.A. Holmes; P.R. Zafred; J.E. King; R.E. Kothmann (Consultant)

2000-02-01T23:59:59.000Z

409

Developing Secure Power Systems Professional Competence: Alignment and Gaps  

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

Developing Secure Power Systems Professional Competence: Alignment Developing Secure Power Systems Professional Competence: Alignment and Gaps in Workforce Development Programs - Phase 2 (July/August 2013) Developing Secure Power Systems Professional Competence: Alignment and Gaps in Workforce Development Programs - Phase 2 (July/August 2013) DOE has recognized that the electricity industry needs workforce development resources that can aid in the accelerating need for Secure Power Systems Professionals, while at the same time identifying capabilities and competencies to protect and enable the modernized grid currently being built. In the spring of 2011 a project was initiated to identify those capabilities and competencies along with assessing the need and qualifications for a certification program for Secure Power Systems

410

Future Power Systems 21 - The Smart Customer | Department of Energy  

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

1 - The Smart Customer 1 - The Smart Customer Future Power Systems 21 - The Smart Customer Future Power Systems 21 - The Smart Customer: From Future Power Systems (FPS) articles 18 and 19 we can see that there are a number of different trading and tariff mechanisms which can be employed on the utility to customer interface to enable participation. From article 20 we see that there will be different pricing profiles on similar day types due to changes in availability of renewable generation. Future Power Systems 21 - The Smart Customer More Documents & Publications Future Power Systems 20: The Smart Enterprise, its Objective and Forecasting. AARP, National Consumer Law Center, and Public Citizen Comments to:DEPARTMENT OF ENERGY Smart Grid RFI: Addressing Policy and Logistical

411

FERC Presendation: Demand Response as Power System Resources, October 29,  

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

FERC Presendation: Demand Response as Power System Resources, FERC Presendation: Demand Response as Power System Resources, October 29, 2010 FERC Presendation: Demand Response as Power System Resources, October 29, 2010 Federal Energy Regulatory Commission (FERC) presentation on demand response as power system resources before the Electicity Advisory Committee, October 29, 2010 Demand Response as Power System Resources More Documents & Publications A National Forum on Demand Response: Results on What Remains to Be Done to Achieve Its Potential - Cost-Effectiveness Working Group Loads Providing Ancillary Services: Review of International Experience Benefits of Demand Response in Electricity Markets and Recommendations for Achieving Them. A report to the United States Congress Pursuant to Section 1252 of the Energy Policy Act of 2005 (February 2006)

412

Green Power Network: On-site Renewable Energy Systems  

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

On-site Renewable Energy Systems On-site Renewable Energy Systems For consumers or organizations wishing to install on-site renewable energy systems, there are a variety of options available, including electricity generating systems and thermal systems that can displace electricity or fossil fuel use. Solar photovoltaics convert sunlight directly into electricity. Solar hot water systems use the sun's energy to heat water. Wind turbines convert the kinetic energy in wind into mechanical power that runs a generator to produce electricity. Geothermal heat pumps use the constant temperature of the upper 10 feet of the Earth to heat and cool buildings. Fuel cells produce electricity from hydrogen and oxygen and can be powered by a number of sources, including renewables. Biomass power systems use biomass feedstocks such as wood waste or methane from animal waste or other sources to generate electricity. Biomass resources can also be used in direct heat and combined heat and power applications.

413

GridLab Power Distribution System Simulation | Open Energy Information  

Open Energy Info (EERE)

GridLab Power Distribution System Simulation GridLab Power Distribution System Simulation Jump to: navigation, search Tool Summary Name: GridLab Power Distribution System Simulation Agency/Company /Organization: Pacific Northwest National Laboratory Sector: Energy Focus Area: Grid Assessment and Integration Phase: Evaluate Options Topics: Pathways analysis User Interface: Desktop Application Website: www.gridlabd.org/ Cost: Free OpenEI Keyword(s): EERE tool Language: English References: GridLAB-D Simulation Software[1] Examine in detail the interplay of every part of a distribution system with every other part of the system. GridLAB-D(tm) is a new power distribution system simulation and analysis tool that provides valuable information to users who design and operate distribution systems, and to utilities that wish to take advantage of the

414

A portable power system using PEM fuel cells  

SciTech Connect

Ball has developed a proof-of-concept, small, lightweight, portable power system. The power system uses a proton exchange membrane (PEM) fuel cell stack, stored hydrogen, and atmospheric oxygen as the oxidant to generate electrical power. Electronics monitor the system performance to control cooling air and oxidant flow, and automatically do corrective measures to maintain performance. With the controller monitoring the system health, the system can operate in an ambient environment from 0 C to +50 C. The paper describes system testing, including load testing, thermal and humidity testing, vibration and shock testing, field testing, destructive testing of high-pressure gas tanks, and test results on the fuel cell power system, metal hydride hydrogen storage, high-pressure hydrogen gas storage, and chemical hydride hydrogen storage.

Long, E. [Ball Aerospace and Technologies Corp., Boulder, CO (United States)

1997-12-31T23:59:59.000Z

415

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

SciTech Connect

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 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. This document provides a detailed description of each system component.

Baring-Gould, I.

2009-05-01T23:59:59.000Z

416

Accelerating Acceptance of Fuel Cell Backup Power Systems - Final Report  

SciTech Connect

Since 2001, Plug Power has installed more than 800 stationary fuel cell systems worldwide. Plug Power’s prime power systems have produced approximately 6.5 million kilowatt hours of electricity and have accumulated more than 2.5 million operating hours. Intermittent, or backup, power products have been deployed with telecommunications carriers and government and utility customers in North and South America, Europe, the United Kingdom, Japan and South Africa. Some of the largest material handling operations in North America are currently using the company’s motive power units in fuel cell-powered forklifts for their warehouses, distribution centers and manufacturing facilities. The low-temperature GenSys fuel cell system provides remote, off-grid and primary power where grid power is unreliable or nonexistent. Built reliable and designed rugged, low- temperature GenSys delivers continuous or backup power through even the most extreme conditions. Coupled with high-efficiency ratings, low-temperature GenSys reduces operating costs making it an economical solution for prime power requirements. Currently, field trials at telecommunication and industrial sites across the globe are proving the advantages of fuel cells—lower maintenance, fuel costs and emissions, as well as longer life—compared with traditional internal combustion engines.

Petrecky, James; Ashley, Christopher

2014-07-21T23:59:59.000Z

417

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

SciTech Connect

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

418

Bi-directional power control system for voltage converter  

DOE Patents (OSTI)

A control system for a voltage converter includes: a power comparator for comparing a power signal on input terminals of the converter with a commanded power signal and producing a power comparison signal; a power regulator for transforming the power comparison signal to a commanded current signal; a current comparator for comparing the commanded current signal with a measured current signal on output terminals of the converter and producing a current comparison signal; a current regulator for transforming the current comparison signal to a pulse width modulator (PWM) duty cycle command signal; and a PWM for using the PWM duty cycle command signal to control electrical switches of the converter. The control system may further include: a command multiplier for converting a voltage signal across the output terminals of the converter to a gain signal having a value between zero (0) and unity (1), and a power multiplier for multiplying the commanded power signal by the gain signal to provide a limited commanded power signal, wherein power comparator compares the limited commanded power signal with the power signal on the input terminals.

Garrigan, Neil Richard (Niskayuna, NY); King, Robert Dean (Schenectady, NY); Schwartz, James Edward (Slingerlands, NY)

1999-01-01T23:59:59.000Z

419

Multi-Agent System for predictive reconfiguration of Shipboard Power Systems  

E-Print Network (OSTI)

is reduced. The Power System Automation Lab (PSAL) has proposed a unique concept called "Predictive Reconfiguration" which refers to performing reconfiguration of a ship?s power system before a weapon hit to reduce the potential damage to the electrical...

Srivastava, Sanjeev Kumar

2005-02-17T23:59:59.000Z

420

RLOPF (risk-limiting optimal power flow) for systems with high penetration of wind power  

Science Journals Connector (OSTI)

Abstract In this paper, we formulate a RLOPF (risk-limiting optimal power flow) problem for systems with high penetration of wind power to address the issue of possibly violating the security constraints in power systems due to the volatility of wind power generations. To cope with the computational complexity of the proposed RLOPF problem, we propose a computationally efficient RLOPF algorithm assisted by the off-line constructed probability distribution models for bus voltage magnitudes and transmission line real power flows. We apply the proposed RLOPF algorithm to the RLOPF problems on a 26-bus power system for two cases of significantly different re-dispatching percentage share for non-renewable power generations to compensate the volatility of wind power generations. The test results reveal that the performance of all solutions obtained by the proposed RLOPF algorithm of various step-sizes in both cases meet the required probability 0.95 on satisfying the security constraints in the presence of variable wind power generations, and the CPU time consumption are mostly within 1 s. We also test the performance of conventional OPF (optimal power flow) solution on both cases, and the resulted probability are all smaller than 0.783. These test results demonstrate the merit and the computational efficiency of the proposed RLOPF algorithm.

Shin-Yeu Lin; Ai-Chih Lin

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "micro-grid power systems" 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

Consumers Power, Inc. - Solar Energy System Rebate | Department of Energy  

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

Inc. - Solar Energy System Rebate Inc. - Solar Energy System Rebate Consumers Power, Inc. - Solar Energy System Rebate < Back Eligibility Residential Savings Category Solar Buying & Making Electricity Heating & Cooling Water Heating Maximum Rebate $3,000 for PV Program Info State Oregon Program Type Utility Rebate Program Rebate Amount SWH: $500/system PV: $500/kW Provider Consumers Power, Inc. Consumers Power, Inc. (CPI) offers rebates to its residential customers who install solar water heating systems or solar photovoltaic (PV) systems from October 1, 2012 to September 30, 2013. The rebate for solar water heaters is $500 for systems with a collector area greater than 31 square feet. Systems used for hot tubs or swimming pools are not eligible. The rebate for solar PV systems is $500 per kilowatt-DC (kW), with a maximum rebate

422

Novel power system demonstrated for space travel | National Nuclear  

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

Novel power system demonstrated for space travel | National Nuclear Novel power system demonstrated for space travel | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > Novel power system demonstrated for space travel Novel power system demonstrated for space travel Posted By Office of Public Affairs John Bounds, Los Alamos National Laboratory

423

Novel power system demonstrated for space travel | National Nuclear  

National Nuclear Security Administration (NNSA)

Novel power system demonstrated for space travel | National Nuclear Novel power system demonstrated for space travel | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > Novel power system demonstrated for space travel Novel power system demonstrated for space travel Posted By Office of Public Affairs John Bounds, Los Alamos National Laboratory

424

Cathode power distribution system and method of using the same for power distribution  

DOE Patents (OSTI)

Embodiments include a cathode power distribution system and/or method of using the same for power distribution. The cathode power distribution system includes a plurality of cathode assemblies. Each cathode assembly of the plurality of cathode assemblies includes a plurality of cathode rods. The system also includes a plurality of bus bars configured to distribute current to each of the plurality of cathode assemblies. The plurality of bus bars include a first bus bar configured to distribute the current to first ends of the plurality of cathode assemblies and a second bus bar configured to distribute the current to second ends of the plurality of cathode assemblies.

Williamson, Mark A; Wiedmeyer, Stanley G; Koehl, Eugene R; Bailey, James L; Willit, James L; Barnes, Laurel A; Blaskovitz, Robert J

2014-11-11T23:59:59.000Z

425

Method and system to provide thermal power for a power plant  

SciTech Connect

A method for providing thermal power to generate electricity in a power plant is described comprising: delivering substantially uncut and untrimmed whole trees into a combustion chamber; burning the substantially whole trees in the combustion chamber to generate heat; and absorbing the heat of combustion of the trees in a device for providing power to an electrical power generator. A system for providing power to an electrical generating power plant is described comprising: means for defining a combustion chamber within which substantially uncut and untrimmed whole trees are received for burning; conveyor means for delivering the substantially whole trees for combustion into the combustion chamber; and heat absorbing means for absorbing the heat of combustion of the substantially whole trees, the heat absorbing means being adapted to be operatively connected to means for converting the absorbed heat into electrical power.

Ostlie, L.D.

1987-11-17T23:59:59.000Z

426

NET SYSTEM POWER: A SMALL SHARE OF  

E-Print Network (OSTI)

hydroelectricity. This report uses the same definition for small hydroelectric facilities, 30 megawatts or less, as is used under the state's Renewable Portfolio Standard,. Electricity from large hydroelectric facilities changes, because NW hydroelectric energy varies from year to year and because the power plant fleet within

427

2006 NET SYSTEM POWER REPORT COMMISSIONREPORT  

E-Print Network (OSTI)

hydroelectricity. This report uses the same definition for small hydroelectric facilities, 30 megawatts or less, as is used under the state's Renewable Portfolio Standard,. Electricity from large hydroelectric facilities changes, because NW hydroelectric energy varies from year to year and because the power plant fleet within

428

High power laser workover and completion tools and systems  

DOE Patents (OSTI)

Workover and completion systems, devices and methods for utilizing 10 kW or more laser energy transmitted deep into the earth with the suppression of associated nonlinear phenomena. Systems and devices for the laser workover and completion of a borehole in the earth. These systems and devices can deliver high power laser energy down a deep borehole, while maintaining the high power to perform laser workover and completion operations in such boreholes deep within the earth.

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

2014-10-28T23:59:59.000Z

429

Input–output signal selection for damping of power system oscillations using wind power plants  

Science Journals Connector (OSTI)

Abstract During the last years wind power has emerged as one of the most important sources in the power generation share. Due to stringent Grid Code requirements, wind power plants (WPPs) should provide ancillary services such as fault ride-through and damping of power system oscillations to resemble conventional generation. Through an adequate selection of input–output signal pairs, \\{WPPs\\} can be effectively used to provide electromechanical oscillations damping. In this paper, different analysis techniques considering both controllability and observability measures and input–output interactions are compared and critically examined. Recommendations are drawn to select the best signal pairs available from \\{WPPs\\} to contribute to power oscillations damping. Control system design approaches including single-input single-output and multivariable control are considered. The recommendation of analysis techniques is justified through the tools usage in a test system including a WPP.

José Luis Domínguez-García; Carlos E. Ugalde-Loo; Fernando Bianchi; Oriol Gomis-Bellmunt

2014-01-01T23:59:59.000Z

430

Concentrating Solar Power Tower System Basics | Department of Energy  

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

Concentrating Solar Power Tower System Basics Concentrating Solar Power Tower System Basics Concentrating Solar Power Tower System Basics August 20, 2013 - 5:06pm Addthis In power tower concentrating solar power systems, numerous large, flat, sun-tracking mirrors, known as heliostats, focus sunlight onto a receiver at the top of a tall tower. A heat-transfer fluid heated in the receiver is used to generate steam, which, in turn, is used in a conventional turbine generator to produce electricity. Some power towers use water/steam as the heat-transfer fluid. Other advanced designs are experimenting with molten nitrate salt because of its superior heat-transfer and energy-storage capabilities. Individual commercial plants can be sized to produce up to 200 megawatts of electricity. Illustration of a power tower power plant. Sunlight is shown reflecting off a series of heliostats surrounding the tower and onto the receiver at the top of the tower. The hot heat-transfer fluid exiting from the receiver flows down the tower, into a feedwater reheater, and then into a turbine, which generates electricity that is fed into the power grid. The cool heat-transfer fluid exiting the turbine flows into a steam condenser to be cooled and sent back up the tower to the receiver.

431

Fuel cell systems for personal and portable power applications  

SciTech Connect

Fuel cells are devices that electrochemically convert fuel, usually hydrogen gas, to directly produce electricity. Fuel cells were initially developed for use in the space program to provide electricity and drinking water for astronauts. Fuel cells are under development for use in the automobile industry to power cars and buses with the advantage of lower emissions and higher efficiency than internal combustion engines. Fuel cells also have great potential to be used in portable consumer products like cellular phones and laptop computers, as well as military applications. In fact, any products that use batteries can be powered by fuel cells. In this project, we examine fuel cell system trade-offs between fuel cell type and energy storage/hydrogen production for portable power generation. The types of fuel cells being examined include stored hydrogen PEM (polymer electrolyte), direct methanol fuel cells (DMFC) and indirect methanol fuel cells, where methanol is reformed producing hydrogen. These fuel cells systems can operate at or near ambient conditions, which make them potentially optimal for use in manned personal power applications. The expected power production for these systems is in the range of milliwatts to 500 watts of electrical power for either personal or soldier field use. The fuel cell system trade-offs examine hydrogen storage by metal hydrides, carbon nanotubes, and compressed hydrogen tanks. We examine the weights each system, volume, fuel storage, system costs, system peripherals, power output, and fuel cell feasibility in portable devices.

Fateen, S. A. (Shaheerah A.)

2001-01-01T23:59:59.000Z

432

Research on Control System of High Power DFIG Wind Power System  

Science Journals Connector (OSTI)

Compared with constant speed constant frequency wind turbine, variable speed constant frequency wind turbine has many advantages: higher efficiency of wind energy converting to electric power, absorbing gust energy, smoothly cutting into the network ... Keywords: wind power, DFIG, high power, LQR, variable speed constant frequency, constant power control

Li Jianlin; Xu Honghua

2008-12-01T23:59:59.000Z

433

Evaluation of performance of combined heat and power systems with dual power generation units (D-CHP).  

E-Print Network (OSTI)

?? In this research, a new combined heat and power (CHP) system configuration has been proposed that uses two power generation units (PGU) operating simultaneously… (more)

Knizley, Alta Alyce

2013-01-01T23:59:59.000Z

434

Important technology considerations for space nuclear power systems  

SciTech Connect

This paper discusses the technology considerations that guide the development of space nuclear power sources (NPS) by the Department of Energy (DOE) to meet a wide variety of applications. The Department and its predecessor agencies have been developing NPS since the 1950s and producing NPS for spacecraft for the National Aeronautics and Space Administration (NASA) and the Department of Defense (DOD) since the early 1960s. No one nuclear power type, isotope or reactor, will suffice over the entire range of mission power required. Nor is one type of power conversion system, be it static or dynamic, the optimum choice of all space nuclear power system applications. There is a need for DOE, in partnership with its users, NASA and DOD, to develop a variety of types of space nuclear power sources -- isotope-static, isotope-dynamic, reactor-static, and reactor-dynamic -- to meet mission requirements well into the next century. 2 figs., 1 tab.

Kuspa, J.P.; Wahlquist, E.J.; Bitz, D.A.

1988-03-01T23:59:59.000Z

435

MHK Technologies/Oscillating Cascade Power System OCPS | Open Energy  

Open Energy Info (EERE)

Oscillating Cascade Power System OCPS Oscillating Cascade Power System OCPS < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Oscillating Cascade Power System OCPS.jpg Technology Profile Primary Organization New Energy Solutions LLC Technology Resource Click here Current Technology Type Click here Oscillating Wave Surge Converter Technology Readiness Level Click here TRL 5 6 System Integration and Technology Laboratory Demonstration Technology Description The OCPS generator consists of a cascade of vertical hydrofoils submerged in moving water This array of hydrofoils oscillates in antiphase at resonance flutter in a slow swimming motion resulting in maximum power transfer from flowing water to electricity The system efficiently converts the oscillating mechanical energy into a steady electric current A 60 overall water to wire efficiency was demonstrated at the proof of concept test and 65 or better overall efficiency is projected using the new engineering advances incorporated since the test in the commercial model

436

Operational results from the Saudi Solar Village Photovoltaic power system  

SciTech Connect

The world's largest photovoltaic power system was carried into the operation phase a few months ago. This system was developed and fabricated in the United States and it is providing electrical energy to three remote villages in Saudi Arabia. The facility includes a 350 kW photovoltaic array, 1-MW diesel powered generator, 1100 kWH lead acid batteries, a 300 KVA inverter and a solar weather data monitoring station. The photovoltaic power system is capable of completely automatic operation. It is designed to operate in stand-alone and cogeneration modes of operation.

Huraib, F.; Al-Sani, A.; Khoshami, B.H.

1982-08-01T23:59:59.000Z

437

TWRS privatization phase 1 electrical power system  

SciTech Connect

This document includes Conceptual Design Report (CDR) for a new 11 km (7 miles) 230 kV transmission line and a new 40 MVA substation (A6) which will be located east of Grout Facility in 200E Area tank farm. This substation will provide electrical power up to 20 MW each for two private contractor facilities for immobilization and disposal of low activity waste (LAW).

Singh, G.

1997-05-30T23:59:59.000Z

438

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

439

Transient modeling of thermionic space nuclear power systems  

E-Print Network (OSTI)

Thermionic Core-Converter 18 Neutron Kinetics . Active Length of the Core Inactive Length of the Core . . . Plena Inlet and Outlet to Core. . . . . . . . 21 . . . 22 . . . . . 22 Radiator Assembly. Radiator 23 23 Headers Inlet and Outlet... Temperature for the Loss of Flow Transient 37 tx Figure 13. Efficiency of the Thermionic Converters for the Loss of Flow Transient. . Page 38 14. Core Thermal Power Profile for the Power Start-up of the TOPAZ II Space Nuclear Power System. 15. Pump...

Berge, Francoise M

1991-01-01T23:59:59.000Z

440

Power Quality/Harmonic Detection: Harmonic Control in Electric Power Systems for the Telecommunications Industry  

E-Print Network (OSTI)

The control of harmonics in power systems continues to be a major concern in the telecommunications industry. AC/DC telecommunication conversion equipment has rarely been thought of as playing a major role in the harmonic interaction problem. Yet...

Felkner, L. J.; Waggoner, R. M.

Note: This page contains sample records for the topic "micro-grid power systems" 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

HEMP emergency planning and operating procedures for electric power systems  

SciTech Connect

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))

1991-01-01T23:59:59.000Z

442

Irrigation Districts: Establishment of Electric Light and Power Systems:  

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

Irrigation Districts: Establishment of Electric Light and Power Irrigation Districts: Establishment of Electric Light and Power Systems: Powers (Nebraska) Irrigation Districts: Establishment of Electric Light and Power Systems: Powers (Nebraska) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Water Buying & Making Electricity Home Weatherization Program Info State Nebraska Program Type Siting and Permitting Provider Natural Resources Irrigation districts, created in section 46-1xx, are encouraged to

443

Linear Concentrator System Basics for Concentrating Solar Power |  

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

Linear Concentrator System Basics for Concentrating Solar Power Linear Concentrator System Basics for Concentrating Solar Power Linear Concentrator System Basics for Concentrating Solar Power August 20, 2013 - 4:45pm Addthis Photo of numerous parallel rows of parabolic trough collectors tracking the sun. Cooling towers and other generator equipment are in the midst of the troughs, and two water tanks are in the background. The Solar Electric Generating Station IV power plant in California consists of many parallel rows of parabolic trough collectors that track the sun. The cooling towers can be seen with the water plume rising into the air, and white water tanks are in the background. Credit: Sandia National Laboratory / PIX 14955 Linear concentrating solar power (CSP) collectors capture the sun's energy with large mirrors that reflect and focus the sunlight onto a linear

444

Angle Instability Detection in Power Systems with High Wind Penetration  

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

Angle Instability Detection in Power Angle Instability Detection in Power Systems with High Wind Penetration Using PMUs YC Zhang National Renewable Energy Laboratory Yingchen.zhang@nrel.gov 27/28 June 2013 Washington, DC DOE/OE Transmission Reliability Program Angle Instability Detection in Power Systems with High Wind Penetration Using Synchrophasor Measurements  Project Objective * Utilize synchrophasor measurements to estimate the equivalent inertia of a power source such as synchronous generators or wind turbine generators * Develop angle instability detection method for a system with high wind penetration using the synchrophasor measurements 2 3 Background Submitted to IEEE Journal of Emerging and Selected Topics in Power Electronics * In case of angular instability, some machines will have

445

Optimization of Power-Intensive Energy Systems with Carbon Capture  

Science Journals Connector (OSTI)

Optimization of Power-Intensive Energy Systems with Carbon Capture ... Three concepts for capturing CO2 from natural gas-fired combined gas/steam turbine power plants are evaluated and compared in this paper: (A) sepn. of CO2 from exhaust gas coming from a std. ...

Xuesong Zheng; Jin-Kuk Kim

2011-09-07T23:59:59.000Z

446

Impact of Natural Gas Infrastructure on Electric Power Systems  

E-Print Network (OSTI)

Impact of Natural Gas Infrastructure on Electric Power Systems MOHAMMAD SHAHIDEHPOUR, FELLOW, IEEE of electricity has introduced new risks associated with the security of natural gas infrastructure on a sig the essence of the natural gas infrastructure for sup- plying the ever-increasing number of gas-powered units

Fu, Yong

447

Power Systems Development Facility: Design, Construction, and Commissioning Status  

SciTech Connect

This paper will provide an introduction to the Power Systems Development Facility, a Department of Energy sponsored, engineering scale demonstration of two advanced coal-fired power technologies; and discuss current status of design, construction and commissioning of this facility. 28 viewgraphs, including 2 figs.

Powell, C.A.; Vimalchand; Hendrix, H.L.; Honeycut, P.M.

1996-12-31T23:59:59.000Z

448

SunShot Initiative: Power Block R&D for CSP Systems  

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

Power Block R&D for CSP Systems Power Block R&D for CSP Systems to someone by E-mail Share SunShot Initiative: Power Block R&D for CSP Systems on Facebook Tweet about SunShot Initiative: Power Block R&D for CSP Systems on Twitter Bookmark SunShot Initiative: Power Block R&D for CSP Systems on Google Bookmark SunShot Initiative: Power Block R&D for CSP Systems on Delicious Rank SunShot Initiative: Power Block R&D for CSP Systems on Digg Find More places to share SunShot Initiative: Power Block R&D for CSP Systems on AddThis.com... Concentrating Solar Power Systems Components Collectors Receivers Power Block Thermal Storage Systems Analysis Competitive Awards Staff Photovoltaics Systems Integration Balance of Systems Power Block R&D for CSP Systems Power plant components and systems for concentrating solar power (CSP)

449

Analysis of International Policies In The Solar Electricity Sector: Lessons for India  

E-Print Network (OSTI)

systems and solar system micro-grids are being looked uponSupport for off-grid/micro-grid applications manufacturingSupport for off-grid/micro-grid applications development

Deshmukh, Ranjit

2011-01-01T23:59:59.000Z

450

Reference Model for Control and Automation Systems in Electrical Power |  

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

Model for Control and Automation Systems in Electrical Model for Control and Automation Systems in Electrical Power Reference Model for Control and Automation Systems in Electrical Power Modern infrastructure automation systems are threatened by cyber attack. Their higher visibility in recent years and the increasing use of modern information technology (IT) components contribute to increased security risk. A means of analyzing these infrastructure automation systems is needed to help understand and study the many system relationships that affect the overall security of the system. Modeling these systems is a very cost effective means of addressing the problem of security from an overall system view. The model presented in the document below provides a structured, cost effective approach to address technical security in process control systems

451

Bifurcation Analysis of Various Power System Models  

E-Print Network (OSTI)

generator and transmission system. Di erent modeling levels with their respective di erential-algebraic equa, the generation or system loading levels are used as bifurcation parameters, which are varied slowly, moving erent induction motor load models are considered. The loads were modeled as constant, linear

Cañizares, Claudio A.

452

Control system for the prototype of hydrogen powered car  

Science Journals Connector (OSTI)

The contribution describes design and construction of hydrogen powered car based on fuel cell technology and electrical DC-drive. The main focus is given to control system and human machine interface of the car. The practical solution of control system ... Keywords: control system design, fuel cells, human machine interface, hydrogen, programmable controllers

Jiri Koziorek; Zdenek Slanina

2005-11-01T23:59:59.000Z

453

Electrical Collection and Transmission Systems for Offshore Wind Power: Preprint  

SciTech Connect

The electrical systems needed for offshore wind farms to collect power from wind turbines--and transmit it to shore--will be a significant cost element of these systems. This paper describes the development of a simplified model of the cost and performance of such systems.

Green, J.; Bowen, A.; Fingersh, L.J.; Wan, Y.

2007-03-01T23:59:59.000Z

454

Fuel Cell Power Systems Analysis Patrick DavisPatrick Davis  

E-Print Network (OSTI)

Power Systems · Balance-of-plant (compressors, humidifiers, heat exchangers, sensors, controls) · Cost hydrogen 500020001000HoursDurability 45125325$/kWCost 325250140W/LPower density Operating on Tier 2 · Fuel Cell Vehicle Systems Analysis · Cost Analyses of Fuel Cell Stacks/ Systems · DFMA Cost Estimates

455

Refractory metal alloys and composites for space nuclear power systems  

SciTech Connect

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. For systems now in the planning stages, design temperatures range from 1300 K for the immediate future to as high as 1700 K for the advanced systems. 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. Special emphasis is focused on the refractory metal alloys of niobium and on the refractory metal composites which utilize tungsten alloy wire for reinforcement. Basic research on the creep and creep-rupture properties of wires, matrices, and composites will be discussed. 20 refs., 27 figs., 1 tab.

Titran, R.H.; Stephens, J.R.; Petrasek, D.W.

1988-01-01T23:59:59.000Z

456

Springerville Generating Station Solar System Solar Power Plant | Open  

Open Energy Info (EERE)

Springerville Generating Station Solar System Solar Power Plant Springerville Generating Station Solar System Solar Power Plant Jump to: navigation, search Name Springerville Generating Station Solar System Solar Power Plant Facility Springerville Generating Station Solar System Sector Solar Facility Type Photovoltaic Developer Tucson Electric Power Location Springerville, Arizona Coordinates 34.1333799°, -109.2859196° 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":34.1333799,"lon":-109.2859196,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

457

DOE Hydrogen Analysis Repository: Renewable Energy Power System Modular  

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

Renewable Energy Power System Modular Simulator (RPM-Sim) Renewable Energy Power System Modular Simulator (RPM-Sim) Project Summary Full Title: Renewable Energy Power System Modular Simulator (RPM-Sim) Project ID: 104 Principal Investigator: Edward Muljadi Keywords: Renewable; hybrid electric vehicles (HEV) Purpose This is a package software program developed based on a modular concept. Each module consists of a type of equipment or an element of a power system (for example, diesel-genset, wind turbine generator, village load, rotary converter, PV-inverter module, fuel cell-inverter module (developed by Prof. Hashem Nehrir, Montana State University), electrolysis module (developed by Prof. Hosein Salehfar and Prof. Mann University of North Dakota). Performer Principal Investigator: Edward Muljadi Organization: National Renewable Energy Laboratory (NREL)

458

Stoney Corners (Northern Power Systems) | Open Energy Information  

Open Energy Info (EERE)

Power Systems) Power Systems) Jump to: navigation, search Name Stoney Corners (Northern Power Systems) Facility Stoney Corners (Northern Power Systems) Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Heritage Sustainable Energy Developer Heritage Sustainable Energy Location McBain MI Coordinates 44.208°, -85.274° 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":44.208,"lon":-85.274,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

459

NETL Coal Power Systems & Technology: Interactive Project Map  

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

Coal & Power Systems Coal & Power Systems Project Portfolio Web Map Welcome to the Strategic Center for Coal Project Portfolio Web Map assembled by NETL. The web map includes projects across all Coal & Power Systems technologies including Advanced Energy Systems, Carbon Capture, Carbon Storage, Cross-Cutting Research, Futuregen 2.0, Industrial Carbon Capture and Storage (ICCS), Clean Coal Power Initiative (CCPI), Geologic Sequestration Training and Research (GSTR), Geologic Sequestration Site Characterization (GSSC), and ICCS (Research). This active web map is updated frequently and provided for informational purposes only. The NETL Strategic Center for Coal Project Portfolio Web Map requires Microsoft Silverlight, a free downloadable browser plug-in. If Silverlight has not been installed previously you will be prompted to do so when the link is clicked to initiate the web map. Microsoft Silverlight is also available at: http://www.microsoft.com/getsilverlight/Get-Started/Install/Default.aspx.

460

Modeling the Effect of Hurricanes on Power Distribution Systems  

E-Print Network (OSTI)

There are many calamitous events such as earthquakes, hurricanes, tsunamis etc. that occur suddenly and cause great loss of life, damage, or hardship. Hurricanes cause significant damage to power distribution systems, resulting in prolonged customer...

Chanda, Suraj

2012-10-19T23:59:59.000Z

Note: This page contains sample records for the topic "micro-grid power systems" 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

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

462

Utility system integration and optimization models for nuclear power management  

E-Print Network (OSTI)

A nuclear power management model suitable for nuclear utility systems optimization has been developed for use in multi-reactor fuel management planning over periods of up to ten years. The overall utility planning model ...

Deaton, Paul Ferris

1973-01-01T23:59:59.000Z

463

Biomass Energy Small-Scale Combined Heat and Power Systems  

Science Journals Connector (OSTI)

Combined heat and power (CHP) generation is one of the essential pillar in a modern, sustainable, and environmentally friendly energy generation. This is due to the fact that cogeneration systems are energeti...

Daniel Büchner; Volker Lenz

2012-01-01T23:59:59.000Z

464

Biomass Energy Small-Scale Combined Heat and Power Systems  

Science Journals Connector (OSTI)

Combined heat and power (CHP) generation is one of the essential pillar in a modern, sustainable, and environmentally friendly energy generation. This is due to the fact that cogeneration systems are energeti...

Daniel Büchner; Volker Lenz

2013-01-01T23:59:59.000Z

465

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

466

A Natural-Gas-Fired Thermoelectric Power Generation System  

Science Journals Connector (OSTI)

This paper presents a combustion-driven thermoelectric power generation system that uses PbSnTe-based thermoelectric modules. The modules were integrated into a gas-fired furnace with a special burner design. The...

K. Qiu; A.C.S. Hayden

2009-07-01T23:59:59.000Z

467

Accelerating the Global Transformation to 21st Century Power Systems  

Science Journals Connector (OSTI)

Nations and regions need to share lessons about the best ways to create enabling policies, regulations, and markets that get the most social benefit out of power systems and incent the necessary investments.

Morgan Bazilian; Mackay Miller; Reid Detchon; Michael Liebreich; William Blyth; Matthew Futch; Vijay Modi; Lawrence Jones; Brent Barkett; Mark Howells; Iain MacGill; Daniel M. Kammen; Trieu Mai; Matthew Wittenstein; Sonia Aggarwal; Mark O’Malley; Juan Pablo Carvallo; Manuel Welsch; Graham Pugh; Rick Weston; Douglas J. Arent

2013-01-01T23:59:59.000Z

468

Magnet power system for the Microwave Tokamak Experiment (MTX)  

SciTech Connect

The system configuration, layout, and general philosophy for the MTX magnet power system is described. The vast majority of the magnet power equipment was quite successfully used on the ALCATOR-C experiment at the Massachusetts Institute of Technology. The AC power for the magnet system at MIT was obtained from a 225MVA alternator. The power for the system at LLNL is obtained directly from the local utility's 230 kV line. This installation, therefore, necessitates the addition of a great deal of equipment in ranges from new switchgear in the substation to using existing switchgear obtained from MIT as contractors for intershop electrical isolation as well as safety isolation for personnel entry into the experimental area. Additionally, some discussion is made of the unique layout of this facility and the tradeoffs made to accommodate them. 2 refs., 6 figs.

Jackson, M.C.; Musslewhite, R.C.

1987-10-07T23:59:59.000Z

469

Decomposition algorithms for multi-area power system analysis  

E-Print Network (OSTI)

. This dissertation investigates decomposition algorithms for multi-area power system transfer capability analysis and economic dispatch analysis. All of the proposed algorithms assume that areas do not share their network operating and economic information among...

Min, Liang

2007-09-17T23:59:59.000Z

470

Simulation Calculation on Solar Chimney Power Plant System  

Science Journals Connector (OSTI)

It is unpractical to establish a Solar Chimney Power Plant System (SCPPS) used to ... flow field of the SCPPS which caused by solar radiation intensity have been analyzed. The calculated ... as well as the differ...

HuiLan Huang; Hua Zhang; Yi Huang; Feng Lu

2007-01-01T23:59:59.000Z

471

From the LHC Reference Database to the Powering Interlock System  

E-Print Network (OSTI)

The protection of the magnet powering system for the Large Hadron Collider (LHC) currently being built at CERN is a major challenge due to the unprecedented complexity of the accelerator. The Powering Interlock System of the LHC will have to manage more than 1600 DC circuits for magnet powering, different in their structure, complexity and importance to the accelerator. For the coherent description of such complex system, a Reference Database as unique source of the parameters of the electrical circuits has been developed. The information, introduced via a generic circuit description language, is first used for installing the accelerator and making all electrical connections. The data is then used for tests and commissioning. During operation, the Powering Interlock System manages all critical functions. It consists of 36 PLC based controllers dis tributed around the machine and requires a flexible and transparent way of configuration, since each controller manages different numbers and types of electrical ci...

Dehavay, C; Schmidt, R; Veyrunes, E; Zerlauth, M

2003-01-01T23:59:59.000Z

472

RF power amplifier linearity compensation for MRI systems  

E-Print Network (OSTI)

In this thesis, a polar-feedback linearization system for use with MRI RF power amplifiers was designed and simulated. The design here presented is intended to replace Analogic's (located in Peabody, Massachusetts) ...

Torres Chico, Gabriel

2010-01-01T23:59:59.000Z

473

Intelligent Environment for Training of 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...

G. Arroyo-Figueroa; Yasmin Hernandez…

2006-01-01T23:59:59.000Z

474

Nuclear Systems Powering a Mission to Mars | Department of Energy  

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

Systems Powering a Mission to Mars Systems Powering a Mission to Mars Nuclear Systems Powering a Mission to Mars November 28, 2011 - 11:23am Addthis Radioisotope Power Systems, a strong partnership between the Energy Department's Office of Nuclear Energy and NASA, has been providing the energy for deep space exploration. Assistant Secretary Lyons Assistant Secretary Lyons Assistant Secretary for Nuclear Energy Curiosity Mission: investigate whether the Gale Crater on Mars has ever offered environmental conditions that support the development of microbial life. This past weekend, the Mars Science Laboratory rover Curiosity launched from Cape Canaveral with the most advanced payload of scientific gear ever used on the red planet. Its mission: to investigate whether the Gale Crater on Mars has ever

475

Combined heat and power systems for commercial buildings: investigating cost, emissions, and primary energy reduction based on system components.  

E-Print Network (OSTI)

?? Combined heat and power (CHP) systems produce electricity and useful heat from fuel. When power is produced near a building which consumes power, transmission… (more)

Smith, Amanda D.

2012-01-01T23:59:59.000Z

476

The entropy power inequality for quantum systems  

E-Print Network (OSTI)

When two independent analog signals, X and Y are added together giving Z=X+Y, the entropy of Z, H(Z), is not a simple function of the entropies H(X) and H(Y), but rather depends on the details of X and Y's distributions. Nevertheless, the entropy power inequality (EPI), which states that exp [2H(Z)] \\geq exp[2H(X)] + exp[2H(Y)], gives a very tight restriction on the entropy of Z. This inequality has found many applications in information theory and statistics. The quantum analogue of adding two random variables is the combination of two independent bosonic modes at a beam splitter. The purpose of this work is to give a detailed outline of the proof of two separate generalizations of the entropy power inequality to the quantum regime. Our proofs are similar in spirit to standard classical proofs of the EPI, but some new quantities and ideas are needed in the quantum setting. Specifically, we find a new quantum de Bruijin identity relating entropy production under diffusion to a divergence-based quantum Fisher information. Furthermore, this Fisher information exhibits certain convexity properties in the context of beam splitters.

Robert Koenig; Graeme Smith

2012-05-15T23:59:59.000Z

477

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

478

Wind Farm Diversification and Its Impact on Power System Reliability  

E-Print Network (OSTI)

WIND FARM DIVERSIFICATION AND ITS IMPACT ON POWER SYSTEM RELIABILITY A Thesis by YANNICK DEGEILH Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE August 2009 Major Subject: Electrical Engineering WIND FARM DIVERSIFICATION AND ITS IMPACT ON POWER SYSTEM RELIABILITY A Thesis by YANNICK DEGEILH Submitted to the Office of Graduate Studies of Texas A...

Degeilh, Yannick

2010-10-12T23:59:59.000Z

479

Decompression cooling system operation for HTS power cable in the KEPCO power grid  

Science Journals Connector (OSTI)

A 3-phase 22.9 kV/50 MVA 410 m HTS power cable system was installed at power grid of KEPCO and had been operated for 20 months. In the HTS cable system an open type cooling system was constructed for cooling LN2 using as coolant for superconducting cable. The cooling capacity of the cooling system was 6 kW at 69 K. Subcooled LN2 flew thorough 410 m HTS cable maintaining 69 K of operating temperature for HTS cable. The electric load had fluctuated continuously with the load status so that the cooling state was also controlled to keep stable operating condition. The consumed LN2 used for making subcooled state was refilled periodically and the amount was 3 tons in average. During all the operating period the HTS cable system supplied electric power stably without any problem.

2014-01-01T23:59:59.000Z

480

Combined Heat and Power (CHP) Systems  

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

The CHP systems program aimed to facilitate acceptance of distributed energy in end-use sectors by forming partnerships with industry consortia in the commercial building, merchant stores, light...

Note: This page contains sample records for the topic "micro-grid power systems" 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

Power system and dispatch training simulator  

Science Journals Connector (OSTI)

Complex technical processes require careful training of operating personnel. This is particularly true for systems where training might affect equipment or safety of people if done during regular operation. Impor...

Prof. Dr.-Ing. Edmund Handschin…

1991-01-01T23:59:59.000Z

482

Adaptive excitation control in power systems  

E-Print Network (OSTI)

control input pu? and output gE? , we have puBxAx ?+?=? ? (2.25) xig ? (2.26) where ?? ? ?? ? ?== 6667 2 rJA , ?? ? ?? ?= 67 0 iB , [ ]08213.1=C 32....38) or puBxAx ?+?=? ? (2.39) xip ? (2.40) where p is a measurable output and iii C are uncertain system parameters. In the Chapter IV, we apply our adaptive control approaches to the real DAE system. We...

Chiu, Pei-Chen

2006-08-16T23:59:59.000Z

483

Power system requirements and selection for the space exploration initiative  

SciTech Connect

The Space Exploration Initiative (SEI) seeks to reestablish a US program of manned and unmanned space exploration. The President has called for a program which includes a space station element, a manned habitation of the moon, and a human exploration of Mars. The NASA Synthesis Group has developed four significantly different architectures for the SEI program. One key element of a space exploration effort is the power required to support the missions. The Power Speciality Team of the Synthesis Group was tasked with assessing and evaluating the power requirements and candidate power technologies for such missions. Inputs to the effort came from existing NASA studies as well as other governments agency inputs such as those from DOD and DOE. In addition, there were industry and university briefings and results of solicitations from the AIAA and the general public as part of the NASA outreach effort. Because of the variety of power needs in the SEI program, there will be a need for multiple power system technologies including solar, nuclear and electrochemical. Due to the high rocket masses required to propel payloads to the moon and beyond to Mars, there is great emphasis placed on the need for high power density and high energy density systems. Power system technology development work is needed results will determine the ultimate technology selections. 23 refs., 10 figs.

Biringer, K.L. (Sandia National Labs., Albuquerque, NM (United States)); Bartine, D.E. (Oak Ridge National Lab., TN (United States)); Buden, D. (Idaho National Engineering Lab., Idaho Falls, ID (United States)); Foreman, J. (Naval Research Lab., Washington, DC (United States)); Harrison, S. (Strategic Defense Initiative Organization, Washington, DC (United States))

1991-01-01T23:59:59.000Z

484

High-efficiency solar dynamic space power generation system  

SciTech Connect

Space power technologies have undergone significant advances over the past few years, and great emphasis is being placed on the development of dynamic power systems at this time. A design study has been conducted to evaluate the applicability of a combined cycle concept-closed Brayton cycle and organic Rankine cycle coupling-for solar dynamic space power generation systems. In the concept presented in this paper (solar dynamic combined cycle), the waste heat rejected by the closed Brayton cycle working fluid is utilized to heat the organic working fluid of an organic Rankine cycle system. This allows the solar dynamic combined cycle efficiency to be increased compared to the efficiencies of two subsystems (closed Brayton cycle and organic fluid cycle). Also, for small-size space power systems (up to 50 kW), the efficiency of the solar dynamic combined cycle can be comparable with Stirling engine performance. The closed Brayton cycle and organic Rankine cycle designs are based on a great deal of maturity assessed in much previous work on terrestrial and solar dynamic power systems. This is not yet true for the Stirling cycles. The purpose of this paper is to analyze the performance of the new space power generation system (solar dynamic combined cycle). The significant benefits of the solar dynamic combined cycle concept such as efficiency increase, mass reduction, specific area-collector and radiator-reduction, are presented and discussed for a low earth orbit space station application.

Massardo, A. (Dept. di Ingegneria Energetica, Univ. di Genova, 16145 Genova (IT))

1991-08-01T23:59:59.000Z

485

A Scheduling Algorithm for Consistent Monitoring Results with Solar Powered High-Performance Wireless Embedded Systems  

E-Print Network (OSTI)

A Scheduling Algorithm for Consistent Monitoring Results with Solar Powered High but critical task for solar powered wireless high power embedded systems. Our algorithm relies on an energy

Simunic, Tajana

486

High Average Power, High Energy Short Pulse Fiber Laser System  

SciTech Connect

Recently continuous wave fiber laser systems with output powers in excess of 500W with good beam quality have been demonstrated [1]. High energy, ultrafast, chirped pulsed fiber laser systems have achieved record output energies of 1mJ [2]. However, these high-energy systems have not been scaled beyond a few watts of average output power. Fiber laser systems are attractive for many applications because they offer the promise of high efficiency, compact, robust systems that are turn key. Applications such as cutting, drilling and materials processing, front end systems for high energy pulsed lasers (such as petawatts) and laser based sources of high spatial coherence, high flux x-rays all require high energy short pulses and two of the three of these applications also require high average power. The challenge in creating a high energy chirped pulse fiber laser system is to find a way to scale the output energy while avoiding nonlinear effects and maintaining good beam quality in the amplifier fiber. To this end, our 3-year LDRD program sought to demonstrate a high energy, high average power fiber laser system. This work included exploring designs of large mode area optical fiber amplifiers for high energy systems as well as understanding the issues associated chirped pulse amplification in optical fiber amplifier systems.

Messerly, M J

2007-11-13T23:59:59.000Z

487

StochasticStochasticStochasticStochasticStochasticStochasticStochasticStochastic Modeling of a PowerModeling of a PowerModeling of a PowerModeling of a PowerModeling of a PowerModeling of a PowerModeling of a PowerModeling of a Power--------Managed System  

E-Print Network (OSTI)

Modeling of a PowerModeling of a Power-------- Managed System: Construction andManaged System: Construction andManaged System: Construction andManaged System: Construction andManaged System: Construction andManaged System: Construction andManaged System: Construction andManaged System: Construction and Optimization

Pedram, Massoud

488

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

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

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

489

Middle Eastern power systems; Present and future developments  

SciTech Connect

Middle Eastern Power systems have evolved independently of each other over many decades. The region covers a wide geographical area of over 4 million square kilometers with an estimated population in 1990 of over 120 million people. This paper discusses the present status and future power system developments in the Middle East with emphasis on the Mashrequ Arab Countries (MAC). MAC consists of Egypt, Iraq, Jordan, Lebanon, Syria, Yemen, and the six Gulf Cooperation Council (GCC) countries, namely, Bahrain, Kuwait, Qatar, Saudi Arabia, Oman, and the United Arab Emirates (UAE). Interconnections within MAC and possible extensions to Turkey, Europe, and Central Africa are discussed. A common characteristic of the MAC power systems is that they are all operated by government or semi-government bodies. The energy resources in the region are varied. Countries such as Iraq, Egypt, and Syria have significant hydro power resources. On the other hand, the GCC countries and Iraq have abundant fossil fuel reserves.

Not Available

1992-06-01T23:59:59.000Z

490

MHK Technologies/Gyroscopic wave power generation system | Open Energy  

Open Energy Info (EERE)

Gyroscopic wave power generation system Gyroscopic wave power generation system < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Technology Profile Primary Organization Gyrodynamics Corporation Technology Resource Click here Wave Technology Type Click here Attenuator Technology Readiness Level Click here TRL 5 6 System Integration and Technology Laboratory Demonstration Technology Description This gyroscopic wave power generation system is a pure rotational mechanical system that does not use conventional air turbines and is housed on a unique floating platform float In particular its outstanding feature is that it utilizes the gyroscopic spinning effect A motor is used to turn a 1 meter diameter steel disc flywheel inside the apparatus and when the rolling action of waves against the float tilts it at an angle the gyroscopic effect causes the disc to rotate longitudinally This energy turns a generator producing electricity

491

AC system stability analysis and assessment for Shipboard Power Systems  

E-Print Network (OSTI)

during reconfiguration. A test SPS computer model, whose simulation results were used for stability studies, is presented in this dissertation. The model used a new generalized methodology for modeling and simulating ungrounded stiffly grounded power...

Qi, Li

2006-04-12T23:59:59.000Z

492

NSTX Protection And Interlock Systems For Coil And Powers Supply Systems  

SciTech Connect

NSTX at Princeton Plasma Physics Laboratory (PPPL) requires sophisticated plasma positioning control system for stable plasma operation. TF magnetic coils and PF magnetic coils provide electromagnetic fields to position and shape the plasma vertically and horizontally respectively. NSTX utilizes twenty six coil power supplies to establish and initiate electromagnetic fields through the coil system for plasma control. A power protection and interlock system is utilized to detect power system faults and protect the TF coils and PF coils against excessive electromechanical forces, overheating, and over current. Upon detecting any fault condition the power system is restricted, and it is either prevented from initializing or suppressed to de-energize coil power during pulsing. Power fault status is immediately reported to the computer system. This paper describes the design and operation of NSTX's protection and interlocking system and possible future expansion.

X. Zhao, S. Ramakrishnan, J. Lawson, C.Neumeyer, R. Marsala, H. Schneider, Engineering Operations

2009-09-24T23:59:59.000Z

493

Design and Implement for Information System Intelligent Monitoring System of Power Grid  

Science Journals Connector (OSTI)

Information system intelligent monitoring system (ISIMS) can be used to monitoring and manage data which are separate in different information systems in power grid. With the help of ISIMS, the ... source can be ...

Lei Huang; Taotao Ma; Jufang Li

2011-01-01T23:59:59.000Z

494

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

495

SolarPower Restoration Systems Inc | Open Energy Information  

Open Energy Info (EERE)

SolarPower Restoration Systems Inc SolarPower Restoration Systems Inc Jump to: navigation, search Name SolarPower Restoration Systems Inc Place Seminole, Florida Zip 33772 Sector Solar Product SolarPower Restoration Systems is pursuing Building Integrated Photovoltaics (BIPV) systems and large scale Photovoltaic Power (PV) Array Systems over concrete and other construction surfaces. Coordinates 32.726625°, -102.645054° 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":32.726625,"lon":-102.645054,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

496

Maximum power tracking control scheme for wind generator systems  

E-Print Network (OSTI)

The purpose of this work is to develop a maximum power tracking control strategy for variable speed wind turbine systems. Modern wind turbine control systems are slow, and they depend on the design parameters of the turbine and use wind and/or rotor...

Mena, Hugo Eduardo

2009-05-15T23:59:59.000Z