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


1

Power control of a wind farm with active stall wind turbines and AC grid connection  

E-Print Network [OSTI]

Power control of a wind farm with active stall wind turbines and AC grid connection Anca D. Hansen1 controller for a wind farm made-up exclusively of active stall wind turbines with AC grid connection wind farm control involves both the control on wind turbine level as well as the central control

2

Distributed connected wind farms (Smart Grid Project) (Limerick, Ireland) |  

Open Energy Info (EERE)

Distributed connected wind farms (Smart Grid Project) (Limerick, Ireland) Distributed connected wind farms (Smart Grid Project) (Limerick, Ireland) Jump to: navigation, search Project Name Distributed connected wind farms Country Ireland Headquarters Location Limerick, Ireland Coordinates 52.663857°, -8.626773° 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":52.663857,"lon":-8.626773,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

3

Grid-Connected Renewable Energy Generation Toolkit-Wind | Open Energy  

Open Energy Info (EERE)

Grid-Connected Renewable Energy Generation Toolkit-Wind Grid-Connected Renewable Energy Generation Toolkit-Wind Jump to: navigation, search Tool Summary Name: Grid-Connected Renewable Energy Generation Toolkit-Wind Agency/Company /Organization: United States Agency for International Development Sector: Energy Focus Area: Wind Resource Type: Training materials Website: www.energytoolbox.org/gcre/mod_6/index.shtml Grid-Connected Renewable Energy Generation Toolkit-Wind Screenshot References: Grid-Connected Renewable Energy Generation Toolkit-Wind[1] Logo: Grid-Connected Renewable Energy Generation Toolkit-Wind GCREwind.JPG References ↑ "Grid-Connected Renewable Energy Generation Toolkit-Wind" Retrieved from "http://en.openei.org/w/index.php?title=Grid-Connected_Renewable_Energy_Generation_Toolkit-Wind&oldid=375084"

4

A $5 Million Boost for Midsize Wind Turbines and Grid Connectivity |  

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

A $5 Million Boost for Midsize Wind Turbines and Grid Connectivity A $5 Million Boost for Midsize Wind Turbines and Grid Connectivity A $5 Million Boost for Midsize Wind Turbines and Grid Connectivity September 14, 2010 - 10:52am Addthis Niketa Kumar Niketa Kumar Public Affairs Specialist, Office of Public Affairs What does this mean for me? With better forecasting, utilities can more reliably connect variable power sources such as wind energy with electricity grids, and can decrease their need for back-up energy sources such as natural gas and hydropower. Last week's Geek-Up talked about the Energy Department's Wind for Schools program and how it is helping schools use wind turbines to power their classrooms. Yesterday, U.S. Energy Secretary Steven Chu announced more than $5 million in funding to help bring wind-generated power to not only more

5

MODULAR MULTI-LEVEL CONVERTER BASED HVDC SYSTEM FOR GRID CONNECTION OF OFFSHORE WIND  

E-Print Network [OSTI]

MODULAR MULTI-LEVEL CONVERTER BASED HVDC SYSTEM FOR GRID CONNECTION OF OFFSHORE WIND POWER PLANT U off-shore wind power plants. The MMC consists of a large number of simple voltage sourced converter offshore wind power plants (WPP) because they offer higher energy yield due to a superior wind profile

Chaudhary, Sanjay

6

Reactive power control of grid-connected wind farm based on adaptive dynamic programming  

E-Print Network [OSTI]

is widely used in the wind power system for its advantages over other two types [5]. The characteristicsReactive power control of grid-connected wind farm based on adaptive dynamic programming Yufei Tang Wind farm Power system Adaptive control a b s t r a c t Optimal control of large-scale wind farm has

He, Haibo

7

Maine Project Launches First Grid-Connected Offshore Wind Turbine in the  

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

Maine Project Launches First Grid-Connected Offshore Wind Turbine Maine Project Launches First Grid-Connected Offshore Wind Turbine in the U.S. Maine Project Launches First Grid-Connected Offshore Wind Turbine in the U.S. May 31, 2013 - 11:00am Addthis News Media Contact (202) 586-4940 WASHINGTON - The Energy Department today recognized the nation's first grid-connected offshore floating wind turbine prototype off the coast of Castine, Maine. Led by the University of Maine, this project represents the first concrete-composite floating platform wind turbine to be deployed in the world - strengthening American leadership in innovative clean energy technologies that diversify the nation's energy mix with more clean, domestic energy sources. "Developing America's vast renewable energy resources is an important part of the Energy Department's all-of-the-above strategy to pave the way

8

Wind energy and system security the grid connection moratorium in Ireland  

Science Journals Connector (OSTI)

This examines the interaction between technical challenges and policy choices that are made regarding wind power, and uses the grid connection moratorium in Ireland as a case study. While total installed wind capacity in Ireland is low compared with Germany, Spain and Denmark, wind power penetration is higher in the Irish system than in either the British, UCTE or NORDEL systems. In December 2003 the system operators expressed concerns about high wind power penetration, in particular the challenges of maintaining power system stability, security and reliability, resulting in a moratorium on new grid connection agreements. Significant progress has since been made in grid codes and dynamic models for wind turbines. In March 2006, there remain almost 3000 MW of proposed wind capacity awaiting a grid connection agreement. This paper investigates the technical issues underpinning this moratorium, monitors progress made since its introduction and suggests alternative technical solutions to the moratorium.

B.P. O Gallachoir; P. Gardner; H. Snodin; E.J. McKeogh

2007-01-01T23:59:59.000Z

9

Distributed connected wind farms (Smart Grid Project) | Open Energy  

Open Energy Info (EERE)

connected wind farms connected wind farms Country Ireland Headquarters Location Kerry, Ireland Coordinates 52.061413°, -9.526437° 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":52.061413,"lon":-9.526437,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

10

Simulation of a new grid-connected hybrid generation system with Stirling engine and wind turbine  

Science Journals Connector (OSTI)

A detail model including all mechanical and electrical aspects is necessary to fully study hybrid grid operation. In this paper a new grid-connected hybrid generation system with a Stirling engine and a wind turbine which are connected to a grid through a common dc bus is presented. The Stirling is more efficient than photo voltaic array and its combination with the wind turbine can create an efficient hybrid system. Fatigue Aerodynamics Structures and Turbulence and Simulink/MATLAB are used to model the mechanical parts of the wind turbine Stirling engine and electrical parts. Field oriented control method is developed on voltage source converter. Power signal feedback method is implemented to determine generators reference shaft speed in hybrid system. Permanent magnet synchronous generator is used in the wind turbine and Stirling engine. Simulation results show that a new hybrid generation system with Stirling and wind turbine can work like other hybrid system and has suitable performance.

H. Shariatpanah; M. Zareian Jahromi; R. Fadaeinedjad

2013-01-01T23:59:59.000Z

11

Realization and control of a wind turbine connected to the grid by using PMSG  

Science Journals Connector (OSTI)

Abstract This paper studies the control of a variable-speed wind turbine using the permanent magnet synchronous generator (PMSG) driven by a wind turbine emulator. The wind turbine is realized by imposing the wind profile on emulator to behave as the real wind turbine when it receives the same wind profile. This wind turbine is connected to the grid by means of a two back-to-back voltage-fed pulse width-modulation (PWM) converters to interface the generator and the grid. This paper has three main objectives, the first is realization of the wind turbine emulator, the second is extracting and exploiting the maximum power from the wind, the third is feeding the grid by high-power and good electrical energy quality; to achieve that, we applied the strategies of maximum power point tracking (MPPT) using optimal torque control which allows the PMSG to operate at an optimal speed. The inverter is used for delivering power to the grid, controlled in a way to deliver only the active power into the grid, thus we have unit power factor. DC-link voltage is also controlled by the inverter. This paper shows the dynamic performances of the complete system by its simulation using Matlab Simulink. Experimental results has verified and validated the wind turbine emulator and the efficiency of MPPT control method using a variable wind profile.

Abdeldjalil Dahbi; Mabrouk Hachemi; Nasreddine Nait-Said; Mohamed-Said Nait-Said

2014-01-01T23:59:59.000Z

12

Small Wind Guidebook/Can I Connect My System to the Utility Grid | Open  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Small Wind Guidebook/Can I Connect My System to the Utility Grid < Small Wind Guidebook Jump to: navigation, search Print PDF WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site?

13

Harmonic and interharmonic distortion analysis in the grid-connected wind electric generator  

Science Journals Connector (OSTI)

The operation of wind turbines has an impact on the power quality at the connected electric network. The integration of wind electric generators with the power grid becomes a headache for power engineers in several aspects. Harmonic distortion is one of the most important phenomena which affect the grid performance. This paper provides an in-depth discussion on harmonic and interharmonic distortion taking place on the low-voltage side of the wind generator, as well as in the power grid side. A case study, to determine where a significant amount of harmonic currents or voltages exists in the system, is performed using a power quality analyser. From these measurements and subsequent calculations, the levels of harmonics and interharmonics are analysed. It is found that the harmonic distortion is invariably present on the generator side as well as on the grid side, depending on the wind turbine technology.

V. Suresh Kumar; P.S. Kannan

2007-01-01T23:59:59.000Z

14

First U.S. Grid-Connected Offshore Wind Turbine Installed Off the Coast of Maine  

Broader source: Energy.gov [DOE]

Castine, Maine - The University of Maine's Advanced Structures and Composites Center partnered with Maine Maritime Academy and Cianbro to launch a deepwater offshore floating wind turbine near Bangor. When the turbine was turned on and electricity began flowing through an undersea cable to Central Maine Power on June 13, the VolturnUS 1:8 became the first grid-connected floating offshore wind turbine in the Americas.

15

United States Launches First Grid-Connected Offshore Wind Turbine...  

Energy Savers [EERE]

partners conducted extensive design, engineering, and testing of floating offshore wind turbines, then constructed and deployed its 65-foot-tall VolturnUS prototype. At a scale of...

16

Maine: United States Launches First Grid-Connected Offshore Wind...  

Office of Environmental Management (EM)

in maritime energy infrastructure and ship building to construct this first-of-its-kind wind energy system. As part of a separate project, the University of Maine is planning a...

17

Study on environmental impact model of grid-connected wind power generation  

Science Journals Connector (OSTI)

As a clean and renewable energy source, wind power is independent from the traditional external energy change, which makes it one of the most promising ways of clean energy generation. It is well known that wind power has obvious energy saving efficiency. But for long-term consideration, wind power generation still has certain impacts on human life. Therefore, standing in the point of the negative effects of wind energy, this paper makes a further research on environmental issues of wind energy development and utilisation. Then combining with fuzzy theory, the environmental impact model of wind energy utilisation is constructed, the science and effectiveness of the model is validated thorough example analysis, which aims to lay a solid theoretical foundation to solve the problems of wind farm grid-connection.

Hao Chang; Jicheng Liu; Cunbin Li

2013-01-01T23:59:59.000Z

18

OFF-SHORE WIND AND GRID-CONNECTED PV: HIGH PENETRATION PEAK SHAVING FOR NEW YORK CITY  

E-Print Network [OSTI]

OFF-SHORE WIND AND GRID-CONNECTED PV: HIGH PENETRATION PEAK SHAVING FOR NEW YORK CITY Richard Perez-shore wind and PV generation using the city of New York as a test case. While wind generation is not known the source of the energy that can meet the demand. While the peak-time availability of wind generation

Perez, Richard R.

19

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

20

Utility Scale Wind Turbines on a Grid Connected Island Mohit Dua, Anthony L. Rogers, James F. Manwell,  

E-Print Network [OSTI]

Utility Scale Wind Turbines on a Grid Connected Island Mohit Dua, Anthony L. Rogers, James F utility scale wind turbines on Fox Islands, located 12 miles from the coast of Maine in the United States of electricity itself. Three locations are analyzed in detail as potential sites for wind turbine installations

Massachusetts at Amherst, University of

Note: This page contains sample records for the topic "grid connected wind" 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

Long-term stabilisation of grid connected wind farms with FACTS controllers  

Science Journals Connector (OSTI)

The increasing power demand has led to the growth of new technologies that play an integral role in shaping the future energy market. Keeping in view of the environmental constraints, grid connected wind turbines are promising in increasing system reliability. This paper presents the impact of FACTS controllers on the long-term dynamic stability of power systems connected with wind farms based on doubly fed induction generator systems. The stability assessment is made first for a three-phase short circuit without the FACTS controllers in the power network and then with the FACTS controllers. The long-term dynamic simulation results yield information on: 1) the impact of faults and slow wind speed changes on the performance of wind driven induction generators; 2) the change in controllable parameters of the FACTS controllers following the faults and wind speed changes; 3) transient reactive power ratings of FACTS controllers for enhancement of rotor speed stability of induction generators and angle stability of synchronous generators.

N. Senthil Kumar; M. Abdullah Khan

2010-01-01T23:59:59.000Z

22

Stabilisation of grid connected wind farms using doubly-fed induction generators with FACTS controllers  

Science Journals Connector (OSTI)

The impact of the wind generation on the power systems is no longer negligible if high penetration levels are going to be achieved. It is very important to boost the transfer capability of the transmission system while improving the utilisation of transmission assets to accommodate high penetration of wind power on the network. Hence, more sophisticated control schemes using advanced power electronic-based flexible AC transmission system (FACTS) controllers are required which will enhance voltage security and voltage stability control. This paper presents the impact of FACTS controllers on the dynamic stability of power systems connected with wind energy conversion systems. The wind farm model considered is a variable speed doubly-fed induction generator model. The dynamic simulation results yield information on: 1) the impact of faults and wind speed changes on the performance of DFIG-based induction generators; 2) the change in controllable parameters of the FACTS controllers following the faults and wind speed changes; 3) transient rating of the FACTS controllers for enhancement of rotor speed stability of induction generators and angle stability of synchronous generators.

N. Senthil Kumar

2013-01-01T23:59:59.000Z

23

Grid Connected based PWM Converter Applied a Self-excited Induction Generator for Wind Turbine Applications  

Science Journals Connector (OSTI)

Abstract This paper presents the electrical power conversion system which is developed for a self-excited induction generator in order to apply with wind turbine. In the wind energy conversion system, a self-excited induction generator is converted the mechanical energy into electrical energy. A B6 rectifier and capacitor are utilized to maintain constant intermediate DC voltage. The average power is converted entirely by the PWM converter, consists of B6 voltage-source inverters. Output currents and active power of switch mode voltage source inverter are flowed into utility grid by current control and PQ theory technique. For the hardware implementation, the system consists of 1kW four poles self excited induction generator and the voltage source inverter controlled output current by hysteresis controller(bang-bang) method. The algorithm is implemented in a dSPACS ds1104DSP together with MATLAB/SIMULINK program. The validity of the proposed method is verified by both simulation and experimental results under power transferred into grid in term of power quality such as real power, reactive power, total harmonics distortion, and so on.

Satean Tunyasrirut; Chakrapong Charumit

2014-01-01T23:59:59.000Z

24

The Optimal Power Tracking Control Strategy of Grid-Connected Excited Synchronous Wind Power Generator.  

E-Print Network [OSTI]

??In this thesis, the wind power system is a coaxial coupling structure between servo motor and excited synchronous wind power generator. By using the excited (more)

Cheng, Wen-kai

2014-01-01T23:59:59.000Z

25

Grid Connected Doubly Fed Induction Generator Based Wind Turbine under LVRT.  

E-Print Network [OSTI]

??This project concentrates on the Low Voltage Ride Through (LVRT) capability of Doubly Fed Induction Generator (DFIG) wind turbine. The main attention in the project (more)

Subramanian, Chandrasekaran and#60;1983and#62

2014-01-01T23:59:59.000Z

26

Wind Power Control System Associated to the Flywheel Energy Storage System Connected to the Grid  

Science Journals Connector (OSTI)

Abstract The aim of this work is the study of the integration of the flywheel energy storage systems in the wind generators at variable speed based to the doubly fed induction generator (DFIG) and to help these generators to contribute to the ancillary services. In this paper investigates also, the control method of the flywheel energy storage system (FESS) with a classical squirrel-cage induction machine associated to a variable speed wind generation using cascade rectifier filter inverter. Simulation results of the dynamic models of the wind generator are presented, for different operating points, to show the good performance of the proposed system.

S. Taraft; D. Rekioua; D. Aouzellag

2013-01-01T23:59:59.000Z

27

First U.S. Grid-Connected Offshore Wind Turbine Installed Off...  

Office of Environmental Management (EM)

deepwater offshore floating wind turbine near Bangor. When the turbine was turned on and electricity began flowing through an undersea cable to Central Maine Power on June 13, the...

28

Abstract--Wind power generation is growing rapidly. However, maintaining the wind turbine connection to grid is a real  

E-Print Network [OSTI]

1 Abstract--Wind power generation is growing rapidly. However, maintaining the wind turbine and the generator design. The fixed-speed wind turbine has the advantage of the low cost of A. F. Abdou and H. R advantages over the fixed-speed operation, such as maximum power capture, less mechanical stresses, and less

Pota, Himanshu Roy

29

Estimation of Wind Speed in Connection to a Wind Turbine  

E-Print Network [OSTI]

horizontal axis wind power plant with rated power 750 KW. The plant has a three bladed rotor and an automatic is shown in Figure 1 demand Drive train Generator Rotor Wind speed Power demand Grid Power Controller PitchEstimation of Wind Speed in Connection to a Wind Turbine X. Ma #3; , N. K. Poulsen #3; , H. Bindner

30

GROWDERS Demonstration of Grid Connected Electricity Systems...  

Open Energy Info (EERE)

GROWDERS Demonstration of Grid Connected Electricity Systems (Smart Grid Project) (Spain) Jump to: navigation, search Project Name GROWDERS Demonstration of Grid Connected...

31

Coordinated controller design of grid connected DFIG based wind turbine using response surface methodology and NSGA II  

Science Journals Connector (OSTI)

Abstract This paper presents a novel design procedure for the coordinated tuning of rotor side converter (RSC) and grid side converter (GSC) controllers of doubly fed induction generator (DFIG) wind turbine system. The RSC and GSC controller parameters are determined by simultaneously optimizing the controller performance indices. The performance indices considered are maximum peak overshoot (MPOS?), settling time (Tss?) of the generator speed and the maximum peak overshoot (MPOSVdc), maximum peak undershoot (MPUSVdc) and settling time (TssVdc) of DC link voltage. The coordinated controller design is carried out in two steps. First step is to arrive at the analytical expression that relates the performance indices and the controller parameters. This is achieved using response surface methodology (RSM) thereby saving significant computational time. In the second step the determination of controller parameters is posed as a constrained multiobjective optimization problem. The constrained multiobjective optimization problem is solved using NSGAII (nondominated sorting genetic algorithm II). The proposed methodology is tested on a sample system with DFIG based WECS. Simulation results demonstrate the effectiveness of the proposed methodology.

Sharon Ravichandran; R.P. Kumudinidevi; S.G. Bharathidasan; V. Evangelin Jeba

2014-01-01T23:59:59.000Z

32

Study of Stability Analysis of a Grid-Connected Doubly Fed Induction Generator (DFIG)-based small Wind Farm.  

E-Print Network [OSTI]

??Wind is the most reliable, clean and fast-developing renewable energy source. The DFIG-based variable speed wind turbine system is now the most popular in wind (more)

Dhar, Baishakhi

2013-01-01T23:59:59.000Z

33

Modeling and Grid impedance Variation Analysis of Parallel Connected Grid Connected Inverter  

E-Print Network [OSTI]

Modeling and Grid impedance Variation Analysis of Parallel Connected Grid Connected Inverter based - This paper addresses the harmonic compensation error problem existing with parallel connected inverter grid connected inverter, it is found that multiple parallel connected inverters and grid impedance can

Bak, Claus Leth

34

Modeling Electric Vehicle Benefits Connected to Smart Grids  

E-Print Network [OSTI]

Vehicle Benefits Connected to Smart Grids M. Stadler 1,2,a ,Electric Vehicle Benefits Connected to Smart Grids Michael

Stadler, Michael

2012-01-01T23:59:59.000Z

35

New Report Characterizes Existing Offshore Wind Grid Interconnection...  

Office of Environmental Management (EM)

New Report Characterizes Existing Offshore Wind Grid Interconnection Capabilities New Report Characterizes Existing Offshore Wind Grid Interconnection Capabilities September 3,...

36

Honeywell Parallon Grid-connect Tests Honeywell Grid-connect Tests  

E-Print Network [OSTI]

Appendix C Honeywell Parallon Grid-connect Tests 12/20/2000 #12;Honeywell Grid-connect Tests 12 power Engine Speed Figure C-1: Ramp Down Tests ­ Power and Shaft Speed ­ 15 kW Steps #12;Honeywell Grid Figure C-2: Ramp Down Tests ­ Power and Turbine Exit Temperature ­ 15 kW Steps #12;Honeywell Grid

37

NREL: Wind Research - Grid Integration of Offshore Wind  

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

Grid Integration of Offshore Wind Grid Integration of Offshore Wind Photograph of a wind turbine in the ocean. Located about 10 kilometers off the coast of Arklow, Ireland, the Arklow Bank offshore wind park consists of seven GE Wind 3.6-MW wind turbines. Much can be learned from the existing land-based integration research for handling the variability and uncertainty of the wind resource. Integration and Transmission One comprehensive grid integration study is the Eastern Wind Integration and Transmission Study (EWITS), in which offshore wind scenarios were analyzed. Nearly 80 GW of offshore wind was studied in the highest penetration scenario. Specific offshore grid distribution and transmission solutions were identified, including cost estimates. With the Atlantic coast likely to lead the way in offshore wind power deployment, EWITS is a benchmark for

38

AN "AC INDUCTOR" BASED GRID CONNECTED INVERTER  

E-Print Network [OSTI]

AN "AC INDUCTOR" BASED GRID CONNECTED INVERTER Ilya Zeltser, Student Member, IEEE and Sam Ben proposes a soft switched Output Current Sourcing (OCS) grid connected inverter that applies a high sourcing inverters where the small disturbance at the line voltage may lead to current run away

39

NREL: Wind Research - Utility Grid Integration  

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

Utility Grid Integration Utility Grid Integration Photo of a wind farm in Lawton, Oklahoma where NREL researchers studied the impact of wind energy on farming system operations. NREL researchers analyzed research data collected from this wind farm in Lawton, Oklahoma, to determine the impacts of wind energy on systems operations. NREL researchers analyzed research data collected from this wind farm in Lawton, Oklahoma, to determine the impacts of wind energy on systems operations. The integration of wind energy into the electric generation industry's supply mix is one of the issues industry grapples with. The natural variability of the wind resource raises concerns about how wind can be integrated into routine grid operations, particularly with regard to the effects of wind on regulation, load following, scheduling, line voltage,

40

GROWDERS Demonstration of Grid Connected Electricity Systems (Smart Grid  

Open Energy Info (EERE)

GROWDERS Demonstration of Grid Connected Electricity Systems (Smart Grid GROWDERS Demonstration of Grid Connected Electricity Systems (Smart Grid Project) Jump to: navigation, search Project Name GROWDERS Demonstration of Grid Connected Electricity Systems Country France Coordinates 46.134171°, 1.933594° 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":46.134171,"lon":1.933594,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

Note: This page contains sample records for the topic "grid connected wind" 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

How Do Wind and Solar Power Affect Grid Operations: The Western Wind and Solar Integration Study  

SciTech Connect (OSTI)

The Western Wind and Solar Integration Study is one of the largest regional wind and solar integration studies to date, examining the operational impact of up to 35% wind, photovoltaics, and concentrating solar power on the WestConnect grid in Arizona, Colorado, Nevada, New Mexico, and Wyoming. This paper reviews the scope of the study, the development of wind and solar datasets, and the results to date on three scenarios.

Lew, D.; Milligan, M.; Jordan, G.; Freeman, L.; Miller, N.; Clark, K.; Piwko, R.

2009-01-01T23:59:59.000Z

42

Integration Technology for PHEV-Grid-Connectivity, with Support...  

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

Technology for PHEV-Grid-Connectivity, with Support for SAE Electrical Standards Integration Technology for PHEV-Grid-Connectivity, with Support for SAE Electrical Standards 2010...

43

Nevada Deploys Grid-Connected Electricity from Enhanced Geothermal...  

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

Nevada Deploys Grid-Connected Electricity from Enhanced Geothermal Systems Nevada Deploys Grid-Connected Electricity from Enhanced Geothermal Systems May 16, 2013 - 12:00am Addthis...

44

Small Wind Guidebook/Can I Go Off-Grid | Open Energy Information  

Open Energy Info (EERE)

Can I Go Off-Grid Can I Go Off-Grid < Small Wind Guidebook Jump to: navigation, search Print PDF WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid? * State Information Portal * Glossary of Terms * For More Information Can I Go "Off-Grid"?

45

Grid-Connected Renewables Program | Department of Energy  

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

Grid-Connected Renewables Program Grid-Connected Renewables Program Grid-Connected Renewables Program < Back Eligibility Commercial Industrial Institutional Local Government Nonprofit Schools State Government Savings Category Bioenergy Wind Buying & Making Electricity Maximum Rebate Not specified Program Info Funding Source New Jersey Societal Benefits Charge (public benefits fund) State New Jersey Program Type Performance-Based Incentive Rebate Amount Varies by project; solicitation lists recommended incentive levels 10-20% may be requested as an up-front grant Provider State of New Jersey Board of Public Utilities Note: The deadline for the most recent solicitation has passed and the information in this summary is specific to this closed program solicitation. The New Jersey Office of Clean Energy 2013-2014 Budget

46

NREL: Wind Research - Utility Grid Integration Assessment  

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

Utility Grid Integration Assessment Utility Grid Integration Assessment Photo of large power transmission towers set against a sunset. The national need for transmission improvements will have a direct impact on the effective use of renewable energy sources such as wind. For wind energy to play a larger role in supplying the nation's energy needs, integrating wind energy into the power grid of the United States is an important challenge to address. NREL's transmission grid integration staff collaborates with utility industry partners and provides data, analysis, and techniques to increase utility understanding of integration issues and confidence in the reliability of new wind turbines. For more information, contact Brian Parsons at 303-384-6958. Printable Version Wind Research Home Capabilities

47

Connecting to the Grid | GE Global Research  

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

of ARPA-e, we're working on a project to develop a DC fault-resilient modular DCDC transformer that would enable renewable power systems, like a wind farm, to connect directly to...

48

REAP Islanded Grid Wind Power Conference  

Office of Energy Efficiency and Renewable Energy (EERE)

Hosted by Renewable Energy Alaska Project, this three-day conference will show attendees how to learn, network, and share information on wind systems in island and islanded grid environments...

49

National Offshore Wind Energy Grid Interconnection Study  

SciTech Connect (OSTI)

The National Offshore Wind Energy Grid Interconnection Study (NOWEGIS) considers the availability and potential impacts of interconnecting large amounts of offshore wind energy into the transmission system of the lower 48 contiguous United States. A total of 54GW of offshore wind was assumed to be the target for the analyses conducted. A variety of issues are considered including: the anticipated staging of offshore wind; the offshore wind resource availability; offshore wind energy power production profiles; offshore wind variability; present and potential technologies for collection and delivery of offshore wind energy to the onshore grid; potential impacts to existing utility systems most likely to receive large amounts of offshore wind; and regulatory influences on offshore wind development. The technologies considered the reliability of various high-voltage ac (HVAC) and high-voltage dc (HVDC) technology options and configurations. The utility system impacts of GW-scale integration of offshore wind are considered from an operational steady-state perspective and from a regional and national production cost perspective.

Daniel, John P. [ABB Inc; Liu, Shu [ABB Inc; Ibanez, Eduardo [National Renewable Energy Laboratory; Pennock, Ken [AWS Truepower; Reed, Greg [University of Pittsburgh; Hanes, Spencer [Duke Energy

2014-07-30T23:59:59.000Z

50

Grid-Connected Renewable Energy Generation Toolkit-Hydroelectric | Open  

Open Energy Info (EERE)

Grid-Connected Renewable Energy Generation Toolkit-Hydroelectric Grid-Connected Renewable Energy Generation Toolkit-Hydroelectric Jump to: navigation, search Tool Summary Name: Grid-Connected Renewable Energy Generation Toolkit-Hydroelectric Agency/Company /Organization: United States Agency for International Development Sector: Energy Resource Type: Training materials Website: www.energytoolbox.org/gcre/mod_4/index.shtml Grid-Connected Renewable Energy Generation Toolkit-Hydroelectric Screenshot References: Grid-Connected Renewable Energy Generation Toolkit-Hydroelectric[1] Logo: Grid-Connected Renewable Energy Generation Toolkit-Hydroelectric GCREhydro.JPG References ↑ "Grid-Connected Renewable Energy Generation Toolkit-Hydroelectric" Retrieved from "http://en.openei.org/w/index.php?title=Grid-Connected_Renewable_Energy_Generation_Toolkit-Hydroelectric&oldid=375082

51

HVDC Connected Offshore Wind Power Plants: Review and Outlook of Current Research  

E-Print Network [OSTI]

HVDC Connected Offshore Wind Power Plants: Review and Outlook of Current Research Jakob Glasdam-of-the-art review on grid integration of large offshore wind power plants (OWPPs) using high voltage direct voltage is to acquire in- depth knowledge of relevant operating phenomena in the offshore OWPP grid, rich with power

Bak, Claus Leth

52

EWIS European wind integration study (Smart Grid Project) (Germany...  

Open Energy Info (EERE)

EWIS European wind integration study (Smart Grid Project) (Germany) Jump to: navigation, search Project Name EWIS European wind integration study Country Germany Coordinates...

53

EWIS European wind integration study (Smart Grid Project) (Netherlands...  

Open Energy Info (EERE)

EWIS European wind integration study (Smart Grid Project) (Netherlands) Jump to: navigation, search Project Name EWIS European wind integration study Country Netherlands...

54

Active Power Control of Wind Power Plants for Grid Integration  

Science Journals Connector (OSTI)

Increasing penetrations of intermittent renewable energy sources, such as wind, on the utility grid have led to ... One approach for improving grid reliability with increasing wind penetrations is to actively con...

Lucy Y. Pao

2014-03-01T23:59:59.000Z

55

Islanded Grid Wind Power Conference | Department of Energy  

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

Islanded Grid Wind Power Conference Islanded Grid Wind Power Conference March 4, 2015 8:00AM AKST to March 6, 2015 5:00PM AKST Alaska Pacific University 4101 University Drive...

56

New Report Characterizes Existing Offshore Wind Grid Interconnection Capabilities  

Broader source: Energy.gov [DOE]

The Energy Department today released the first National Offshore Wind Energy Grid Interconnection Study that investigated the key economic and technological factors that will influence the integration of offshore wind energy onto the national grid.

57

Study on the Connection of DFIG to Grid Based on Double-vector PWM  

Science Journals Connector (OSTI)

With the increasing of wind penetration in power systems, many national grid codes demand complete models and simulation studies under different system conditions in order to ensure that the connection of a wind farm would not have a detrimental impact ... Keywords: doubly fed induction generator, power system modelling, double-vector-pwm control

Xueqin Zheng; Donghui Guo

2010-06-01T23:59:59.000Z

58

Grid-Connected Renewable Energy Systems | Department of Energy  

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

Grid-Connected Renewable Energy Systems Grid-Connected Renewable Energy Systems Grid-Connected Renewable Energy Systems July 2, 2012 - 8:21pm Addthis When connecting a home energy system to the electric grid, research and consider equipment required as well as your power provider’s requirements and agreements. | Photo courtesy of Solar Design Associates, Inc. When connecting a home energy system to the electric grid, research and consider equipment required as well as your power provider's requirements and agreements. | Photo courtesy of Solar Design Associates, Inc. What are the key facts? While renewable energy systems are capable of powering houses and small businesses without any connection to the electricity grid, many people prefer the advantages that grid-connection offers. Aside from the major small renewable energy system components, you

59

Voltage grid support of DFIG wind turbines during grid faults Anca D. Hansen1  

E-Print Network [OSTI]

Voltage grid support of DFIG wind turbines during grid faults Anca D. Hansen1 , Gabriele Michalke2) wind turbines address primarily the design of DFIG wind turbine control with special focus on power strategy for DFIG wind turbines, which enhances the fault ride-through capability of DFIG wind turbines

60

SciTech Connect: NREL Controllable Grid Interface for Testing...  

Office of Scientific and Technical Information (OSTI)

MW-Scale Wind Turbine Generators (Poster) In order to understand the behavior of wind turbines experiencing grid disturbances, it is necessary to perform a series of tests and...

Note: This page contains sample records for the topic "grid connected wind" 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

GROWDERS Demonstration of Grid Connected Electricity Systems (Smart Grid  

Open Energy Info (EERE)

(Spain) (Spain) Jump to: navigation, search Project Name GROWDERS Demonstration of Grid Connected Electricity Systems Country Spain Coordinates 40.338169°, -3.438721° 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":40.338169,"lon":-3.438721,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

62

Performance of PI controller for control of active and reactive power in DFIG operating in a grid-connected variable speed wind energy conversion system  

Science Journals Connector (OSTI)

Due to several factors, wind energy becomes an essential type of electricity generation. The share of this type of energy in the network is becoming increasingly important. The objective of this work is to presen...

Azzouz Tamaarat; Abdelhamid Benakcha

2014-09-01T23:59:59.000Z

63

V-125: Cisco Connected Grid Network Management System Multiple  

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

5: Cisco Connected Grid Network Management System Multiple 5: Cisco Connected Grid Network Management System Multiple Vulnerabilities V-125: Cisco Connected Grid Network Management System Multiple Vulnerabilities April 3, 2013 - 1:44am Addthis PROBLEM: Cisco Connected Grid Network Management System Multiple Vulnerabilities PLATFORM: Cisco Connected Grid Network Management System 2.x ABSTRACT: Some vulnerabilities have been reported in Cisco Connected Grid Network Management System. REFERENCE LINKS: Cisco Security Notice CVE-2013-1163 Cisco Security Notice CVE-2013-1171 Secunia Advisory SA52834 SecurityTracker Alert ID: 1028374 SecurityTracker Alert ID: 1028373 CVE-2013-1163 CVE-2013-1171 IMPACT ASSESSMENT: Medium DISCUSSION: 1) Certain input related to the element list component is not properly sanitised before being returned to the user. This can be exploited to

64

V-125: Cisco Connected Grid Network Management System Multiple  

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

5: Cisco Connected Grid Network Management System Multiple 5: Cisco Connected Grid Network Management System Multiple Vulnerabilities V-125: Cisco Connected Grid Network Management System Multiple Vulnerabilities April 3, 2013 - 1:44am Addthis PROBLEM: Cisco Connected Grid Network Management System Multiple Vulnerabilities PLATFORM: Cisco Connected Grid Network Management System 2.x ABSTRACT: Some vulnerabilities have been reported in Cisco Connected Grid Network Management System. REFERENCE LINKS: Cisco Security Notice CVE-2013-1163 Cisco Security Notice CVE-2013-1171 Secunia Advisory SA52834 SecurityTracker Alert ID: 1028374 SecurityTracker Alert ID: 1028373 CVE-2013-1163 CVE-2013-1171 IMPACT ASSESSMENT: Medium DISCUSSION: 1) Certain input related to the element list component is not properly sanitised before being returned to the user. This can be exploited to

65

V-125: Cisco Connected Grid Network Management System Multiple...  

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

System 2.x ABSTRACT: Some vulnerabilities have been reported in Cisco Connected Grid Network Management System. REFERENCE LINKS: Cisco Security Notice CVE-2013-1163 Cisco...

66

First Commercial, Grid-Connected, Hydrokinetic Tidal Energy Project...  

Office of Science (SC) Website

First Commercial, Grid-Connected, Hydrokinetic Tidal Energy Project in North America Small Business Innovation Research (SBIR) and Small Business Technology Transfer (STTR) SBIR...

67

Application of fuzzy logic control algorithm as stator power controller of a grid-connected doubly-fed induction generator  

Science Journals Connector (OSTI)

This paper discusses the power outputs control of a grid-connected doubly-fed induction generator (DFIG) for a wind power generation systems. The DFIG structure control has a six diode rectifier ... order to cont...

Ridha Cheikh; Arezki Menacer; Said Drid; Mourad Tiar

2013-03-01T23:59:59.000Z

68

NWTC Controllable Grid Interface (Fact Sheet), National Wind...  

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

time and costs while providing system engineers with a better understanding of how wind turbines, PV inverters, and energy storage systems react to grid disturbances and provide...

69

National Offshore Wind Energy Grid Interconnection Study (NOWEGIS)  

Broader source: Energy.gov [DOE]

The National Offshore Wind Energy Grid Interconnection Study (NOWEGIS) considers the availability and potential impacts of interconnecting large amounts of offshore wind energy into the transmission system of the lower 48 contiguous United States.

70

Modelling and Simulation of a Single Phase Grid Connected Using Photovoltaic and Battery Based Power Generation  

Science Journals Connector (OSTI)

Microgrid is a part of the power distribution system which uses renewable energy based of power generation connected to the grid system. Multi energy power generation is composed of renewable energy systems including photovoltaic, wind turbine, energy ... Keywords: Battery Storage, Inverter, Microgrid, Photovoltaic, Matlab/Simulink.

Alias Khamis; Azah Mohamed; Hussain Shareef; Afida Ayob; Mohd Shahrieel Mohd Aras

2013-11-01T23:59:59.000Z

71

Switching transients in wind farm grids Poul Srensen1)  

E-Print Network [OSTI]

's point of view seems to have been on the fault- ride-through capability of the wind turbines, in order offshore wind farms than from distributed wind turbines on land sites [4], [5]. However according the internal sub-sea cable grid interconnecting the wind turbines, often referred to as the power collection

72

WindConnect | Open Energy Information  

Open Energy Info (EERE)

WindConnect WindConnect Jump to: navigation, search Name WindConnect Place Madison, Wisconsin Zip 53707-1007 Sector Services Product Unit of Alliant Energy. It provides turnkey services such as design, engineering, and construction. Coordinates 43.07295°, -89.386694° 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":43.07295,"lon":-89.386694,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

73

Smart Grid: Building a Wireless Connection | Department of Energy  

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

Grid: Building a Wireless Connection Grid: Building a Wireless Connection Smart Grid: Building a Wireless Connection October 7, 2010 - 2:41pm Addthis Dr. Kristina Johnson What does this mean for me? Along with creating tens of thousands of new jobs, bringing our grid into the 21st century will give consumers and businesses the information they need to reduce their energy consumption - and better manage their energy bills. Smart grid technologies, tools and techniques will also help us reduce the risk of service interruptions of blackouts by giving utilities real-time information about the health of their power networks. The evolution of the wireless industry serves as a valuable reminder of what's possible when you open an industry up to new competition and capital and allow new business models to take root.

74

Expedited Permitting of Grid-Scale Wind Energy Development (Maine) |  

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

Expedited Permitting of Grid-Scale Wind Energy Development (Maine) Expedited Permitting of Grid-Scale Wind Energy Development (Maine) Expedited Permitting of Grid-Scale Wind Energy Development (Maine) < Back Eligibility Utility Fed. Government Commercial Agricultural Investor-Owned Utility State/Provincial Govt Industrial Construction Municipal/Public Utility Local Government Residential Installer/Contractor Rural Electric Cooperative Tribal Government Low-Income Residential Schools Retail Supplier Institutional Multi-Family Residential Systems Integrator Fuel Distributor Nonprofit General Public/Consumer Transportation Savings Category Wind Buying & Making Electricity Program Info State Maine Program Type Siting and Permitting Maine's Expedited Permitting of Grid-Scale Wind Energy Development statue provides an expedited permitting pathway for proposed wind developments in

75

High Penetration, Grid Connected Photovoltaic Technology Codes and Standards: Preprint  

SciTech Connect (OSTI)

This paper reports the interim status in identifying and reviewing photovoltaic (PV) codes and standards (C&S) and related electrical activities for grid-connected, high-penetration PV systems with a focus on U.S. electric utility distribution grid interconnection.

Basso, T. S.

2008-05-01T23:59:59.000Z

76

NREL: Transmission Grid Integration - Wind Integration Datasets  

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

Wind Integration Datasets The Wind Integration Datasets provide energy professionals with a consistent set of wind profiles for the eastern United States and the western United...

77

Wind Turbine Pitch Angle Controllers for Grid Frequency Stabilisation  

E-Print Network [OSTI]

Laboratory Wind Energy Department P.O. Box 49 DK-4000 Roskilde, Denmark clemens.jauch@risoe.dk Abstract in Norway [4]. For the purpose of this research work the power system model has been extended with a windWind Turbine Pitch Angle Controllers for Grid Frequency Stabilisation Clemens Jauch Risø National

78

DOE 2012 Market Report on U.S. Wind Technologies for Distributed...  

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

grid Point of Grid Interconnection: Wind turbines connected on the customer side of the meter or directly to the distribution grid or microgrids. This year's distributed wind...

79

Offshore Wind and Vehicle to Grid Power | Princeton Plasma Physics...  

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

11, 2013, 4:30pm to 6:00pm Princeton University Computer Science Auditorium 104 Offshore Wind and Vehicle to Grid Power Professor Willett Kempton University of Delaware...

80

Transatlantic Workshop on Electric Vehicles and Grid Connectivity |  

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

Transatlantic Workshop on Electric Vehicles and Grid Connectivity Transatlantic Workshop on Electric Vehicles and Grid Connectivity Transatlantic Workshop on Electric Vehicles and Grid Connectivity November 17, 2010 - 2:33pm Addthis On November 17, 2010, the United States and the European Union, under the auspices of the U.S.-EU Energy Council, invited equipment suppliers and manufacturers, utilities, policymakers, standards organizations, and government agencies to discuss mutually beneficial near-term actions to accelerate the introduction of electric vehicles to the market - with a particular focus on government policy and cooperative efforts to spur vehicle demonstration and deployment. For more information about the workshop, including participant presentations, click here. Addthis Related Articles Obama Administration Launches Competition for Three New Manufacturing

Note: This page contains sample records for the topic "grid connected wind" 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

National Wind Technology Center Controllable Grid Interface  

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

currently at the National Wind Technology Center (NWTC) test site * Many small wind turbines (less than 100 kW) installed as well * 2.5-MW and 5-MW dynamometers * 7-MVA...

82

Robust iterative learning control of single-phase grid-connected inverter  

Science Journals Connector (OSTI)

For the single phase inductance-capacitance-inductance (LCL) grid-connected inverter in micro-grid, a kind of robust iterative learning controller...

Zhong-Qiang Wu; Chun-Hua Xu; Yang Yang

2014-08-01T23:59:59.000Z

83

NREL: Transmission Grid Integration - Western Wind Dataset  

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

Western Wind Dataset Western Wind Dataset Here you will find information about the Western Wind Dataset, including the methodology used to develop the dataset, the accuracy of the data, site selection, and power output. Alert! Important Note Obtain the Western Wind Dataset This dataset was originally created for the Western Wind and Solar Integration Study. These data are modeled data and not actual measured data. Learn more about the datasets including the similarities and differences between the Eastern and Western datasets and the differences from the NREL state wind maps. Methodology 3TIER created the Western Dataset with oversight and assistance from NREL. Numerical Weather Prediction (NWP) models were used to essentially recreate the historical weather for the western U.S. for 2004, 2005, and 2006. The

84

Wind Success Stories | Department of Energy  

Office of Environmental Management (EM)

wind power more reliably. August 22, 2013 United States Launches First Grid-Connected Offshore Wind Turbine EERE investments help nation take first step toward offshore wind in...

85

Modeling Electric Vehicle Benefits Connected to Smart Grids  

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

Modeling Electric Vehicle Benefits Connected to Smart Grids Modeling Electric Vehicle Benefits Connected to Smart Grids Title Modeling Electric Vehicle Benefits Connected to Smart Grids Publication Type Conference Paper Year of Publication 2011 Authors Stadler, Michael, Chris Marnay, Ratnesh Sharma, Gonçalo Mendes, Maximillian Kloess, Gonçalo Cardoso, Olivier Mégel, and Afzal S. Siddiqui Conference Name 7th IEEE Vehicle Power and Propulsion Conference Date Published 09/2011 Publisher LBNL Conference Location Chicago, IL Keywords electricity markets and policy group, energy analysis and environmental impacts department Abstract Connecting electric storage technologies to smartgrids will have substantial implications in building energy systems. Local storage will enable demand response. Mobile storage devices in electric vehicles (EVs) are in direct competition with conventional stationary sources at the building. EVs will change the financial as well as environmental attractiveness of on-site generation (e.g. PV, or fuel cells). In order to examine the impact of EVs on building energy costs and CO2 emissions in 2020, a distributed-energy-resources adoption problem is formulated as a mixed-integer linear program with minimization of annual building energy costs or CO2 emissions. The mixed-integer linear program is applied to a set of 139 different commercial buildings in California and example results as well as the aggregated economic and environmental benefits are reported. The research shows that considering second life of EV batteries might be very beneficial for commercial buildings.

86

A HYBRID SOLAR WIND MODEL OF THE CESE+HLL METHOD WITH A YIN-YANG OVERSET GRID AND AN AMR GRID  

SciTech Connect (OSTI)

A hybrid three-dimensional (3D) MHD model for solar wind study is proposed in the present paper with combined grid systems and solvers. The computational domain from the Sun to Earth space is decomposed into the near-Sun and off-Sun domains, which are respectively constructed with a Yin-Yang overset grid system and a Cartesian adaptive mesh refinement (AMR) grid system and coupled with a domain connection interface in the overlapping region between the near-Sun and off-Sun domains. The space-time conservation element and solution element method is used in the near-Sun domain, while the Harten-Lax-Leer method is employed in the off-Sun domain. The Yin-Yang overset grid can avoid well-known singularity and polar grid convergence problems and its body-fitting property helps achieve high-quality resolution near the solar surface. The block structured AMR Cartesian grid can automatically capture far-field plasma flow features, such as heliospheric current sheets and shock waves, and at the same time, it can save significant computational resources compared to the uniformly structured Cartesian grid. A numerical study of the solar wind structure for Carrington rotation 2069 shows that the newly developed hybrid MHD solar wind model successfully produces many realistic features of the background solar wind, in both the solar corona and interplanetary space, by comparisons with multiple solar and interplanetary observations.

Feng Xueshang; Zhang Shaohua; Xiang Changqing; Yang Liping; Jiang Chaowei [SIGMA Weather Group, State Key Laboratory for Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190 (China); Wu, S. T., E-mail: fengx@spaceweather.ac.cn [Center for Space Plasma and Aeronomic Research, University of Alabama in Huntsville, AL 35899 (United States)

2011-06-10T23:59:59.000Z

87

A Hybrid Solar Wind Model of the CESE+HLL Method with a Yin-Yang Overset Grid and an AMR Grid  

Science Journals Connector (OSTI)

A hybrid three-dimensional (3D) MHD model for solar wind study is proposed in the present paper with combined grid systems and solvers. The computational domain from the Sun to Earth space is decomposed into the near-Sun and off-Sun domains, which are respectively constructed with a Yin-Yang overset grid system and a Cartesian adaptive mesh refinement (AMR) grid system and coupled with a domain connection interface in the overlapping region between the near-Sun and off-Sun domains. The space-time conservation element and solution element method is used in the near-Sun domain, while the Harten-Lax-Leer method is employed in the off-Sun domain. The Yin-Yang overset grid can avoid well-known singularity and polar grid convergence problems and its body-fitting property helps achieve high-quality resolution near the solar surface. The block structured AMR Cartesian grid can automatically capture far-field plasma flow features, such as heliospheric current sheets and shock waves, and at the same time, it can save significant computational resources compared to the uniformly structured Cartesian grid. A numerical study of the solar wind structure for Carrington rotation 2069 shows that the newly developed hybrid MHD solar wind model successfully produces many realistic features of the background solar wind, in both the solar corona and interplanetary space, by comparisons with multiple solar and interplanetary observations.

Xueshang Feng; Shaohua Zhang; Changqing Xiang; Liping Yang; Chaowei Jiang; S. T. Wu

2011-01-01T23:59:59.000Z

88

Rural Electrification Through Solar and Wind Hybrid System: A Self Sustained Grid Free Electric Power Source  

Science Journals Connector (OSTI)

In India, more than 200 million people live in rural areas without access to grid-connected power. A convenient & cost-effective solution would be hybrid power systems which can reduce dependency on grid supply, improve reliability. For a typical domestic load a solar wind hybrid system is designed with charge controller to charge a conventional battery. To optimize system efficiency, a simple algorithm is developed for system sizing. Total cost of unit is calculated using life cycle cost analysis and payback peri

Vadirajacharya; P.K. Katti

2012-01-01T23:59:59.000Z

89

Grid-Connected Renewable Energy Generation Toolkit-Biomass | Open Energy  

Open Energy Info (EERE)

Grid-Connected Renewable Energy Generation Toolkit-Biomass Grid-Connected Renewable Energy Generation Toolkit-Biomass Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Grid-Connected Renewable Energy Generation Toolkit-Biomass Agency/Company /Organization: United States Agency for International Development Sector: Energy Focus Area: Biomass Resource Type: Training materials Website: www.energytoolbox.org/gcre/mod_2/index.shtml#update Grid-Connected Renewable Energy Generation Toolkit-Biomass Screenshot References: Grid-Connected Renewable Energy-Biomass[1] Logo: Grid-Connected Renewable Energy Generation Toolkit-Biomass Biomass Toolkit References ↑ "Grid-Connected Renewable Energy-Biomass" Retrieved from "http://en.openei.org/w/index.php?title=Grid-Connected_Renewable_Energy_Generation_Toolkit-Biomass&oldid=375080

90

Grid-Connected Renewable Energy Generation Toolkit-Solar | Open Energy  

Open Energy Info (EERE)

Grid-Connected Renewable Energy Generation Toolkit-Solar Grid-Connected Renewable Energy Generation Toolkit-Solar Jump to: navigation, search Tool Summary Name: Grid-Connected Renewable Energy Generation Toolkit-Solar Agency/Company /Organization: United States Agency for International Development Sector: Energy Focus Area: Solar Resource Type: Training materials Website: www.energytoolbox.org/gcre/mod_5/index.shtml Grid-Connected Renewable Energy Generation Toolkit-Solar Screenshot References: Grid-Connected Renewable Energy Generation Toolkit-Solar[1] Logo: Grid-Connected Renewable Energy Generation Toolkit-Solar GCREsolar.JPG References ↑ "Grid-Connected Renewable Energy Generation Toolkit-Solar" Retrieved from "http://en.openei.org/w/index.php?title=Grid-Connected_Renewable_Energy_Generation_Toolkit-Solar&oldid=375083

91

DOE Publishes Notice of Public Meeting for Smart Grid-connected...  

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

for Smart Grid-connected Buildings DOE Publishes Notice of Public Meeting for Smart Grid-connected Buildings April 8, 2014 - 9:30am Addthis DOE has published a notice of public...

92

Energy Storage on the Grid and the Short-term Variability of Wind.  

E-Print Network [OSTI]

??Wind generation presents variability on every time scale, which must be accommodated by the electric grid. Limited quantities of wind power can be successfully integrated (more)

Hittinger, Eric Stephen

2012-01-01T23:59:59.000Z

93

Line-Fault Ride-Through (LFRT) Capabilities of DFIG Wind Turbine Connected to the Power System  

Science Journals Connector (OSTI)

Abstract With increased penetration of wind power into electrical grids, DFIG wind turbines are largely deployed due to their variable speed feature and hence influencing system dynamics. According to grid codes issued by utilities, tripping of wind turbines following power system faults is not allowed. Besides, to provide voltage support to the grid, reactive current supply is necessary. This paper studies the power flow (PF) of two different networks, the first is a transmission network and the second is a distribution one, A wind Doubly-Fed Induction Generator (DFIG) turbine is injected to these different networks. A line fault right through (LFRT) is applied on each network and the power flow results are given and compared, then a new solution is proposed to connect the wind turbine to the distribution network with a down transformer to not disconnect the wind turbine during the LFRT, the power system analysis toolbox (PSAT) is used in this work.

A. Khattara; M. Bahri; A. Aboubou; M. Becherif; M.Y. Ayad

2013-01-01T23:59:59.000Z

94

Grid-Connected Renewable Energy Systems Case Studies | Open Energy  

Open Energy Info (EERE)

Grid-Connected Renewable Energy Systems Case Studies Grid-Connected Renewable Energy Systems Case Studies Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Grid-Connected Renewable Energy Systems Case Studies Agency/Company /Organization: World Bank Sector: Energy Topics: Market analysis, Co-benefits assessment, Background analysis Resource Type: Lessons learned/best practices, Case studies/examples Website: web.worldbank.org/WBSITE/EXTERNAL/TOPICS/EXTENERGY2/EXTRENENERGYTK/0,, Country: Uganda, Mexico, Turkey, Germany, Sri Lanka, China Eastern Africa, Central America, Western Asia, Western Europe, Southern Asia, Eastern Asia Coordinates: 1.373333°, 32.290275° 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":1.373333,"lon":32.290275,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

95

The Research of Non-isolated Photovolatic Grid-connected Inverter Based on DSP&ARM  

Science Journals Connector (OSTI)

Implementation scheme of non-isolated photovolatic grid-connected inverter based on DSP & ARM is proposed in the paper. The structure and principle of non-isolated grid-connected inverter is introduced. The design of hardware and software system based ... Keywords: non-isolated, grid-connected inverte, deadbeat control, MPPT

Zhang Xiaoli; Xue Jiaxiang; Liang Yongquan; Cui Longbin

2012-04-01T23:59:59.000Z

96

Aalborg Universitet Frequency Adaptive Selective Harmonic Control for Grid-Connected Inverters  

E-Print Network [OSTI]

Aalborg Universitet Frequency Adaptive Selective Harmonic Control for Grid-Connected Inverters Yang Harmonic Control for Grid-Connected Inverters. IEEE Transactions on Power Electronics, 1-13. 10.1109/TPEL Selective Harmonic Control for Grid-Connected Inverters Yongheng Yang, Student Member, IEEE, Keliang Zhou

Berning, Torsten

97

Demand response computation for future smart grids incorporating wind power  

Science Journals Connector (OSTI)

In this paper, we study supply and demand management in the presence of conventional and renewable energy sources, where the latter is represented by a single wind turbine. Total social welfare, defined in terms of consumer utility and cost of power ... Keywords: constrained optimization, kuhn-tucker conditions, outage probability, renewable source, smart grid

Nihan iek; Hakan Deli

2013-03-01T23:59:59.000Z

98

En vindkraftparks inverkan p Gvle Energis elnt; The effects from a wind farm on Gvle Energis electrical grid.  

E-Print Network [OSTI]

?? The effects from a planned wind farm on the grid utility Gvle Energis electrical grid have been studied. The wind farm is planned to (more)

Wejander, Erik

2010-01-01T23:59:59.000Z

99

Electric grid dependence on the configuration of a small-scale wind and solar power hybrid system  

Science Journals Connector (OSTI)

Results are presented from the modeling of a small-scale distributed power system containing power demands, photovoltaic arrays, small-scale wind turbines and an electric grid connection. Detailed models of the photovoltaic array and the wind turbine are briefly explained in addition to the solar and wind recourse models. A subunit is defined to consist of a power demand together with power contributors. It is shown how the grid dependency (or renewable energy contribution) is affected by the connection of subunits and according to the relationship between the power demand patterns and renewable resource patterns. The outcome from several case studies is presented using simulated power demands and renewable resources. In a scenario with subunit power demands characteristic for a large household and a small factory, it is shown that the coupling of subunits reduces annual grid power transfers by more than 10% and increases the renewable power contribution to the demand by almost 7%.

M. Mikati; M. Santos; C. Armenta

2013-01-01T23:59:59.000Z

100

New Report: Integrating Variable Wind Energy into the Grid | Department of  

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

Report: Integrating Variable Wind Energy into the Grid Report: Integrating Variable Wind Energy into the Grid New Report: Integrating Variable Wind Energy into the Grid December 19, 2011 - 2:00pm Addthis The Energy Department and Alstom Grid announce the availability of a new report on integrating wind energy into the electrical grid. | Image source: The Strategies and Decision Support Systems for Integrating Variable Energy Resources in Control Centers for Reliable Grid Operations Report. The Energy Department and Alstom Grid announce the availability of a new report on integrating wind energy into the electrical grid. | Image source: The Strategies and Decision Support Systems for Integrating Variable Energy Resources in Control Centers for Reliable Grid Operations Report. Charlton I. Clark Integration Team Lead, Wind and Water Power Program

Note: This page contains sample records for the topic "grid connected wind" 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

Real time grid congestion management in presence of high penetration of wind energy  

E-Print Network [OSTI]

Real time grid congestion management in presence of high penetration of wind energy A. Vergnol1 , J », « Wind energy », « Variable speed drive » Abstract With the increased use of wind energy the power

Boyer, Edmond

102

Recent advancement on technical requirements for grid integration of wind power  

Science Journals Connector (OSTI)

When the penetration level of wind energy was quite low, the impact of wind generators was not considered by TSOs [14, 29]. At that time, wind turbines were allowed to trip when grid faults occurred [29]. As the ...

Xiaoge Liu; Zhao Xu; Kit Po Wong

2013-12-01T23:59:59.000Z

103

Comparative study of voltage oriented and frequency coordinated control of grid connected doubly fed induction generator  

Science Journals Connector (OSTI)

In this paper a comparative study between voltage oriented control (VOC) and frequency coordinated control (FCC) of grid connected doubly fed induction generator (DFIG) is presented. The two method controls are deeply done on DFIG converter sides grid side converter (GSC) and rotor side converter (RSC). The VOC method permanently maintains the DFIG reactive power to zero values to achieve stable voltage. This control is implemented by regulating the rotor direct axis reference current in RSC using grid reactive power. On the other hand the FCC has employed the active power obtaining from the system frequency deviation to control the rotor quadrature axis reference current in the RSC. The GSC is the same in two studies and its applied vector controlled method. The comparison study between the two methods is conducted at a steady and dynamic state under constant and variable wind speeds. The simulation results are carried out by using PSCAD/EMTDC electromagnetic transient program to validate the comparison study between two methods control of DFIG. The outcomes of the simulation show that the VOC is very convenient when the DFIG operated at transient mode and variable wind speeds while the FCC is feasible and effective for steady-state mode applications. Furthermore the FCC method has an ability to reduce the active and reactive powers ripples as well as decreasing torque harmonics. Both of two methods had fewer transient recovery values of output parameters which ensure safety dynamic response of DFIG and power system. This study contributes significantly to choose the suitable control of the DFIG converters according to electrical grid operation conditions. In addition if a joint control has been applied to these two methods the wind power gained strong and flexible control of the frequency and voltage for different operating conditions.

Li Yang

2014-01-01T23:59:59.000Z

104

DOE Publishes Notice of Public Meeting for Smart Grid-connected Buildings  

Broader source: Energy.gov [DOE]

The physical characterization of smart and grid-connected commercial and residential buildings end-use equipment and appliances, including but not limited to processes and metrics for measurement, identification of grid and building services, and identification of values and benefits of grid connectivity.

105

Design of a Robust Digital Current Controller for a Grid Connected Interleaved Inverter  

E-Print Network [OSTI]

Design of a Robust Digital Current Controller for a Grid Connected Interleaved Inverter M. A for a three- phase voltage source grid-connected interleaved inverter. Each phase consists of 6 half small output filter capacitors are required which provide high impedance to grid voltage harmonics

106

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

107

The wind potential impact on the maximum wind energy penetration in autonomous electrical grids  

Science Journals Connector (OSTI)

According to long-term wind speed measurements the Aegean Archipelago possesses excellent wind potential, hence properly designed wind energy applications can substantially contribute to fulfill the energy requirements of the island societies. On top of this, in most islands the electricity production cost is extremely high, while significant insufficient power supply problems are often encountered, especially during the summer. Unfortunately, the stochastic behaviour of the wind and the important fluctuations of daily and seasonal electricity load pose a strict penetration limit for the contribution of wind energy in the corresponding load demand. The application of this limit is necessary in order to avoid hazardous electricity grid fluctuations and to protect the existing thermal power units from operating near or below their technical minima. In this context, the main target of the proposed study is to present an integrated methodology able to estimate the maximum wind energy penetration in autonomous electrical grids on the basis of the available wind potential existing in the Aegean Archipelago area. For this purpose a large number of representative wind potential types have been investigated and interesting conclusions have been derived.

J.K. Kaldellis

2008-01-01T23:59:59.000Z

108

Connecting Renewables Directly to the Grid: Resilient Multi-Terminal HVDC Networks with High-Voltage High-Frequency Electronics  

SciTech Connect (OSTI)

GENI Project: GE is developing electricity transmission hardware that could connect distributed renewable energy sources, like wind farms, directly to the grideliminating the need to feed the energy generated through intermediate power conversion stations before they enter the grid. GE is using the advanced semiconductor material silicon carbide (SiC) to conduct electricity through its transmission hardware because SiC can operate at higher voltage levels than semiconductors made out of other materials. This high-voltage capability is important because electricity must be converted to high-voltage levels before it can be sent along the grids network of transmission lines. Power companies do this because less electricity is lost along the lines when the voltage is high.

None

2012-01-23T23:59:59.000Z

109

Modelling and Analysis of Variable Speed Wind Turbines with Induction Generator during Grid  

E-Print Network [OSTI]

Modelling and Analysis of Variable Speed Wind Turbines with Induction Generator during Grid Fault Wind Turbines with Induction Generator during Grid Fault by Sigrid M. Bolik Institute of Energy turbine technology has undergone rapid developments. Growth in size and the optimization of wind turbines

Hansen, René Rydhof

110

Performance Parameters for Grid-Connected PV Systems  

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

National Renewable Energy Laboratory National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, Colorado 80401-3393 303-275-3000 * www.nrel.gov Operated for the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy by Midwest Research Institute * Battelle Contract No. DE-AC36-99-GO10337 B. Marion, J. Adelstein, and K. Boyle National Renewable Energy Laboratory H. Hayden, B. Hammond, T. Fletcher, B. Canada, and D. Narang Arizona Public Service Co. D. Shugar, H. Wenger, A. Kimber, and L. Mitchell PowerLight Corporation G. Rich and T. Townsend First Solar Prepared for the 31 st IEEE Photovoltaics Specialists Conference and Exhibition Lake Buena Vista, Florida January 3-7, 2005 February 2005 * NREL/CP-520-37358 Performance Parameters for Grid-Connected PV Systems

111

Developement of a digitally controlled low power single phase inverter for grid connected solar panel.  

E-Print Network [OSTI]

?? The work consists in developing a power conversion unit for solar panel connected to the grid. This unit will be a single phase inverter (more)

Marguet, Raphael

2010-01-01T23:59:59.000Z

112

Study of Power Grid Connection with an Unstable Source from Elevator Energy Regenerative Unit (EERU)  

Science Journals Connector (OSTI)

Abstract This paper presents a study of power grid connection with an unstable source from elevator energy regenerative unit (EERU). The investigated system used a Permanent Magnet Synchronous Motor (PMSM). The EERU is installed for this system to generate electricity according to the generative mode of the elevator which delivers power to the grid as an unstable power source. To meet standard specifications in term of power quality and safety for grid connection, the phase angle and the amplitude as well as the frequency of the grid voltage are considered for grid connection. Phase lock loop (PLL) algorithm is therefore very important and selected for grid synchronization. The study is done by simulation using Matlab/Simulink program. The simulation used phase lock loop to synchronize between two systems. The results of this simulation will lead to a proper design of the grid connection with EERU as an unstable power source.

A. Noppakant; B. Plangklang; Y. Paraken

2014-01-01T23:59:59.000Z

113

Backstepping DC Voltage Control in a Multi-terminal HVDC System Connecting Offshore Wind Farms  

Science Journals Connector (OSTI)

Wind power is projected to play an important ... current and future power systems. To integrate offshore wind farms to the existing onshore grid, voltage source ... in a safe range. To distribute transmitted wind

Xiaodong Zhao; Kang Li; Yusheng Xue

2014-01-01T23:59:59.000Z

114

Title MULTI-TERMINAL VSC HVDC CONNECTION OF OFFSHORE WIND FARMS  

E-Print Network [OSTI]

additional advantages over AC cables when the connection of offshore wind farms is considered, since it

Contact Person Jef Beerten

115

EWIS European wind integration study (Smart Grid Project) (Czech Republic)  

Open Energy Info (EERE)

study (Smart Grid Project) (Czech Republic) study (Smart Grid Project) (Czech Republic) Jump to: navigation, search Project Name EWIS European wind integration study Country Czech Republic Coordinates 49.817493°, 15.472962° 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":49.817493,"lon":15.472962,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

116

Affect Analysis of Power Grid Energy Quality for Coastal Wind Power Access  

Science Journals Connector (OSTI)

While the effect on the power grid have become increasingly prominent as the larger proportion of wind power in to the grid. It is needed to study the grid's ability of taking in wind power. One of the main issues which including harmonics, voltage fluctuation and flicker is the effect on energy quality when integrating the wind farms into power grid. The impact is related to the type of the wind Turbines, the wind farm scale, the short-circuit capacity of the grid and the line parameters. The mechanism of voltage fluctuation and harmonics caused by off shore wind farms is studied. The case of Zhejiang off shore wind-farm integration is studied and the index of Power Quality is given. Some effective measures to reduce the voltage fluctuation and flicker and harmonics are put forward, besides, using simulation software PSD-BPA to verify the effectiveness of reducing voltage fluctuation.

Shuyong Chen; Ningchao Gao; Hong Shen; Yusheng Quan; Cong Wang; Lin Zhu; Jianwei Liu

2011-01-01T23:59:59.000Z

117

NREL Controllable Grid Interface for Testing MW-scale Wind Turbine...  

Office of Scientific and Technical Information (OSTI)

Main Specifications References In order to understand the behavior of wind turbines experiencing grid disturbances, it is necessary to perform a series of tests and...

118

Real-time digital control of DFIG-based wind generators for grid support.  

E-Print Network [OSTI]

??In this thesis, a set of new converter /control techniques are developed for the Grid Side and Rotor Side converter applications in DFIG wind power (more)

Mesbah, Mohsen

2012-01-01T23:59:59.000Z

119

Enhanced control of DFIG-based wind power plants to comply with the international grid codes.  

E-Print Network [OSTI]

??A review of the latest international grid codes shows that large wind power plants are stipulated to not only ride-through various fault conditions, but also (more)

Mohseni, Mansour

2011-01-01T23:59:59.000Z

120

Power Smoothing Control in a Grid-Connected Marine Current Turbine System for Compensating  

E-Print Network [OSTI]

Power Smoothing Control in a Grid-Connected Marine Current Turbine System for Compensating Swell d-axis and q-axis inductances g, g Grid inductance and resistance Pole pair number R Turbine blade-axis and q-axis voltages Turbine and generator power difference , g Rotor position, grid voltage angle

Boyer, Edmond

Note: This page contains sample records for the topic "grid connected wind" 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

Efficiency and Reliability Improvement in Wind Turbine Converters by Grid Converter Adaptive Control  

E-Print Network [OSTI]

Efficiency and Reliability Improvement in Wind Turbine Converters by Grid Converter Adaptive stack shows efficiency increase in the high power region. Introduction Wind turbines are emerging energy test setup. Keywords >, Efficiency>>, >,

Munk-Nielsen, Stig

122

Balancing act - BPA grid responds to huge influx of wind power...  

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

successfully interconnected 19 wind farms that cumulatively include more than 1,000 wind turbines to our transmission grid in the last few years and have built fi ve new...

123

Economic analysis of standalone and grid connected hybrid energy systems  

Science Journals Connector (OSTI)

A pilot region was selected and cost analysis of using renewable energy sources with a hydrogen system for that regions energy demand is introduced, in a techno-economic perspective, in this paper. The renewable energy potential for the region was evaluated by implementing energy cost analysis. The study also evaluates the feasibility of utilizing solar and wind energy with hydrogen as a storage unit to meet the electricity requirements of the pilot region as a standalone system and in conjunction with the conventional grid based electricity. In order to simulate the operation of the system and to calculate the technical and economic parameters, micropower optimization program Homer (NREL, US) was used in this study. Homer requires some input values, such as technological options, cost of components, and resource compliance; and then the program ranges the feasible system configurations according to the net present cost (system cost) by using these inputs. The pilot region in this study, where the renewable based energy will be used, is determined to be Electrics & Electronics Faculty, Istanbul Technical University.

Belgin Emre Trkay; Ali Yasin Telli

2011-01-01T23:59:59.000Z

124

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

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

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

125

A single-phase grid-connected PV system with active power filter  

Science Journals Connector (OSTI)

In this paper a single-phase active power filter based in a two stages grid-connected photovoltaic system is presented. The proposed system can not only inject PV power into utility but can act always as an active power filter to compensate the load ... Keywords: THD, grid-connected PV systems, power factor and active power filter, single-phase systems

Kleber C. A. De Souza; Denizar C. Martins

2008-07-01T23:59:59.000Z

126

Ris-R-Report Grid fault and design-basis for wind turbines -  

E-Print Network [OSTI]

Risø-R-Report Grid fault and design-basis for wind turbines - Final report Anca D. Hansen, Nicolaos and design-basis for wind turbines - Final report Division: Wind Energy Division Risø-R-1714(EN) January 2010-basis for wind turbines". The objective of this project has been to assess and analyze the consequences

127

Chile-GTZ Public Properties for Grid-connected Renewable Energy Projects |  

Open Energy Info (EERE)

Properties for Grid-connected Renewable Energy Projects Properties for Grid-connected Renewable Energy Projects Jump to: navigation, search Logo: Chile-GTZ Public Properties for Grid-connected Renewable Energy Projects Name Chile-GTZ Public Properties for Grid-connected Renewable Energy Projects Agency/Company /Organization GTZ on behalf of the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (BMU) Sector Energy Topics Background analysis Website http://www.gtz.de/en/themen/27 Program Start 2008 Program End 2011 Country Chile UN Region Latin America and the Caribbean References Public Properties for Grid-connected Renewable Energy Projects[1] GTZ is working with Chile with the following objective: "Sites on state-owned properties are identified, assessed and marketed to enable the

128

Sandia National Laboratories: Grid System Planning for Wind:...  

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

Wind: Wind Generator Modeling A typical wind power plant may contain hundreds of wind turbines that are interconnected through a collector system. Though the impact of...

129

Standards for the Smart Grid  

SciTech Connect (OSTI)

To get from today's electricity grid to tomorrow's smart grid with interconnection and full two way communications connection to distributed energy sources such as wind, solar, and plug-in electric vehicles requires an interoperability framework of protocols and standards.

DeBlasio, R.; Tom, C.

2008-01-01T23:59:59.000Z

130

Wind Success Stories  

Energy Savers [EERE]

+0000 843456 at http:energy.gov United States Launches First Grid-Connected Offshore Wind Turbine http:energy.goveeresuccess-storiesarticlesunited-states-launches-f...

131

Optimal Placement of the Wind Generators in the Medium Voltage Power Grid  

Science Journals Connector (OSTI)

The minimization of power losses in the medium voltage (MV) grid requires adjustment of network of power sources. This problem is particularly important for renewable energy sources, for example for the farms of wind generators. Their placement and nominal ... Keywords: medium voltage power grid, wind generators, genetic algorithms, parallel processing

Andrzej Jordan; Ryszard Szczebiot; Carsten Maple; Slawomir Cieslik

2011-04-01T23:59:59.000Z

132

DFIG Driven Wind Turbine Grid Fault-Tolerance Using High-Order Sliding Mode Control  

E-Print Network [OSTI]

DFIG Driven Wind Turbine Grid Fault-Tolerance Using High-Order Sliding Mode Control Mohamed (DFIG), control, second-order sliding mode, grid fault-tolerance. Nomenclature WT = Wind Turbine; DFIG increased currents, which may lead to converter failure. Achieving ride-through requirement for DFIG

Boyer, Edmond

133

Part of the Climate Change Problem . . . and the Solution? Chinese-Made Wind Power Technology and Opportunities for Dissemination  

E-Print Network [OSTI]

2004. Grid Connected Wind Power in China. NREL/Commercialization of Wind Power Technology in China. Coal and Candles: Wind Powerin China. EnergyPolicy

Lewis, Joanna I.

2005-01-01T23:59:59.000Z

134

Grid Impacts of Wind Power Variability: Recent Assessments from a Variety of Utilities in the United States (Presentation)  

SciTech Connect (OSTI)

Presentation for the European Wind Energy Conference held February 27--March 2, 2006, in Athens, Greece, showing grid impacts of wind power variability.

Parsons, B.

2006-03-01T23:59:59.000Z

135

A novel off-grid hybrid power system comprised of solar photovoltaic, wind, and hydro energy sources  

Science Journals Connector (OSTI)

Abstract Several factors must be considered before adopting a full-phase power generation system based on renewable energy sources. Long-term necessary data (for one year if possible) should be collected before making any decisions concerning implementation of such a systems. To accurately assess the potential of available resources, we measured solar irradiation, wind speed, and ambient temperature at two high-altitude locations in Nepal: the Lama Hotel in Rasuwa District and Thingan in Makawanpur District. Here, we propose two practical, economical hybridization methods for small off-grid systems consisting entirely of renewable energy sourcesspecifically solar photovoltaic (PV), wind, and micro-hydro sources. One of the methods was tested experimentally, and the results can be applied to help achieve Millennium Development Goal 7: Ensuring environmental sustainability. Hydro, wind, and solar photovoltaic energy are the top renewable energy sources in terms of globally installed capacity. However, no reports have been published about off-grid hybrid systems comprised of all three sources, making this implementation the first of its kind anywhere. This research may be applied as a practical guide for implementing similar systems in various locations. Of the four off-grid PV systems installed by the authors for village electrification in Nepal, one was further hybridized with wind and hydro power sources. This paper presents a novel approach for connecting renewable energy sources to a utility mini-grid.

Binayak Bhandari; Kyung-Tae Lee; Caroline Sunyong Lee; Chul-Ki Song; Ramesh K. Maskey; Sung-Hoon Ahn

2014-01-01T23:59:59.000Z

136

Redox Flow Batteries for Grid-scale Energy Storage - Energy Innovation...  

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

and could also improve the electric grid's reliability and help connect more wind turbines and solar panels to the grid. A schematic of an upgraded vanadium redox batter...

137

Optimal Placement of Wind Generators in Medium Voltage Power Grids -- Investigations of Genetic Algorithm  

Science Journals Connector (OSTI)

The paper presents investigations of a genetic algorithm for computations of power losses in the MV power grid. In this case, the vector of start population PO0 and mutation likelihood was investigated. Diagrams of power losses in the grid dependent ... Keywords: genetic algorithm, wind generators, power grid, parallel processing, MPI

Andrzej Jordan; Carsten Maple; Ryszard Szczebiot; Lukasz Swierczewski

2011-04-01T23:59:59.000Z

138

Transatlantic Workshop on Electric Vehicles and Grid Connectivity...  

Office of Environmental Management (EM)

Remarks at the City Club of Cleveland -- As Prepared for Delivery EPB's 226 million Smart Grid Investment Grant project, part of the Energy Department's Recovery Act funding...

139

Review of grid connection requirements for generation assets in weak power grids  

Science Journals Connector (OSTI)

Abstract The integration of variable energy sources in weak power grids poses many technical and economic challenges. Both aspects have an impact on the development of grid codes, that is worth analysing. Grid codes shall be adapted to technical constraints in the corresponding power grid, such as the network strength and the characteristics of generation technologies. This paper reviews and compares technical requirements imposed on to generation assets in countries with very distinct characteristics, in order to analyse the influence of weakness and isolation of a power grid on the interconnection conditions imposed by system operators to grid users. Current and future regulation aspects are covered.

Agurtzane Etxegarai; Pablo Eguia; Esther Torres; Araitz Iturregi; Victor Valverde

2015-01-01T23:59:59.000Z

140

Managing Wind Power Forecast Uncertainty in Electric Grids.  

E-Print Network [OSTI]

??Electricity generated from wind power is both variable and uncertain. Wind forecasts provide valuable information for wind farm management, but they are not perfect. Chapter (more)

Mauch, Brandon Keith

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "grid connected wind" 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

Nevada Deploys First U.S. Commercial, Grid-Connected Enhanced Geothermal  

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

Nevada Deploys First U.S. Commercial, Grid-Connected Enhanced Nevada Deploys First U.S. Commercial, Grid-Connected Enhanced Geothermal System Nevada Deploys First U.S. Commercial, Grid-Connected Enhanced Geothermal System April 12, 2013 - 12:00pm Addthis WASHINGTON -- As part of the Obama Administration's all-of-the-above energy strategy, the Energy Department today recognized the nation's first commercial enhanced geothermal system (EGS) project to supply electricity to the grid. Based in Churchill County, Nevada, Ormat Technologies' Desert Peak 2 EGS project has increased power output of its nearby operating geothermal field by nearly 38 percent - providing an additional 1.7 megawatts of power to the grid and validating this emerging clean energy technology. "Developing America's vast renewable energy resources sustainably is an

142

An Assessment of Converter Modelling Needs for Offshore Wind Power Plants Connected via VSC-  

E-Print Network [OSTI]

An Assessment of Converter Modelling Needs for Offshore Wind Power Plants Connected via VSC- HVDC, especially in case of connection of offshore wind power plants (OWPPs). Modelling challenges are faced

Bak, Claus Leth

143

Fluidic: Grid-Scale Batteries for Wind and Solar | Department of Energy  

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

Fluidic: Grid-Scale Batteries for Wind and Solar Fluidic: Grid-Scale Batteries for Wind and Solar Fluidic: Grid-Scale Batteries for Wind and Solar February 27, 2013 - 5:42pm Addthis Andrew Gumbiner Contractor, Advanced Research Projects Agency-Energy. FLUIDIC: Metal Air Recharged from DOE ARPA-E on Vimeo. Our nation's modern electric grid is limited in its ability to store excess energy for on-demand power. As a result, electricity must be generated on a constant basis to perfectly match demand. Grid-scale storage technologies have the potential to shift this dynamic, revolutionizing how our grid uses and distributes energy. Reliable, high-performing storage technologies could provide a considerable amount of power on very short demand, lowering costs to utilities and consumers alike. These powerful technologies would enable renewable sources of energy -

144

Maine Deploys First U.S. Commercial, Grid-Connected Tidal Energy Project |  

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

Maine Deploys First U.S. Commercial, Grid-Connected Tidal Energy Maine Deploys First U.S. Commercial, Grid-Connected Tidal Energy Project Maine Deploys First U.S. Commercial, Grid-Connected Tidal Energy Project July 24, 2012 - 1:12pm Addthis NEWS MEDIA CONTACT (202) 586-4940 WASHINGTON -- Today, Energy Secretary Steven Chu recognized the nation's first commercial, grid-connected tidal energy project off the coast of Eastport, Maine. Leveraging a $10 million investment from the Energy Department, Ocean Renewable Power Company (ORPC) will deploy its first commercial tidal energy device into Cobscook Bay this summer. The project, which injected $14 million into the local economy and has supported more than 100 local and supply chain jobs, represents the first tidal energy project in the United States with long-term contracts to sell electricity

145

Mongolia-GTZ Energy Efficiency within the Grid-Connected Energy Supply |  

Open Energy Info (EERE)

within the Grid-Connected Energy Supply within the Grid-Connected Energy Supply Jump to: navigation, search Logo: Mongolia-GTZ Energy Efficiency within the Grid-Connected Energy Supply Name Mongolia-GTZ Energy Efficiency within the Grid-Connected Energy Supply Agency/Company /Organization Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH Partner German Federal Ministry for Economic Cooperation and Development (BMZ), Ministry of Fuel and Energy (MoFE) Sector Energy Topics Background analysis, Policies/deployment programs Website http://www.gtz.de/en/praxis/95 Program Start 2007 Program End 2010 Country Mongolia Eastern Asia References GTZ projects [1] GTZ is working with Mongolia on energy efficiency capacity development for institutions and the private sector. References

146

An economic analysis of grid-connected residential solar photovoltaic power systems  

E-Print Network [OSTI]

The question of the utility grid-connected residential market for photovoltaics is examined from a user-ownership perspective. The price is calculated at which the user would be economically indifferent between

Carpenter, Paul R.

147

Control of offshore marine substation for grid-connection of a wave power farm  

Science Journals Connector (OSTI)

Abstract To grid-connect an offshore wave power farm, an intermediate marine substation is suggested. As a part of the Uppsala University wave power project, a marine substation has been designed, assembled and deployed at sea. The substation is capable of connecting up to seven wave energy converters (WECs), and to transfer the power to the onshore 1kV-grid. In this article, the control procedure for grid connection of the \\{WECs\\} is described step-by-step, and the practical implementations are presented. The system is designed with autonomous control and will connect or disconnect the WECs, depending on the sea state. Fault handling is taken into account, and grid power quality such as harmonic distortion and flicker are considered in the design. Experimental results are presented to verify the system functionalities.

Rickard Ekstrm; Mats Leijon

2014-01-01T23:59:59.000Z

148

Robust control based on the Lyapunov theory of a grid-connected doubly fed induction generator  

Science Journals Connector (OSTI)

This paper discusses the robust control of a grid-connected doubly-fed induction generator (DFIG) controlled by vector control using a nonlinear ... , in which an optimal operation of the DFIG in subsynchronous o...

Ridha Cheikh; Arezki Menacer; Said Drid

2013-06-01T23:59:59.000Z

149

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

150

Unbalanced-grid-fault ride-through control for a doubly fed induction generator wind turbine with series grid-side converter  

Science Journals Connector (OSTI)

The grid codes now require doubly fed induction generator (DFIG) wind turbines having the "low voltage ride-through (LVRT)" capability. However, a traditional DFIG with a partially rated back-to-back converter has inherent difficulties to ride through ... Keywords: doubly fed induction generator (DFIG), low voltage ride-through (LVRT), series grid-side converter (SGSC), unbalanced grid fault, voltage dips, voltage sags, wind power generation, wind turbine

Yong Liao; Hui Li; Jun Yao

2011-02-01T23:59:59.000Z

151

New Battery Design Could Help Solar and Wind Power the Grid | Department of  

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

Battery Design Could Help Solar and Wind Power the Grid Battery Design Could Help Solar and Wind Power the Grid New Battery Design Could Help Solar and Wind Power the Grid April 24, 2013 - 4:20pm Addthis NEWS MEDIA CONTACT (202) 586-4940 WASHINGTON - Researchers from the U.S. Department of Energy's (DOE) SLAC National Accelerator Laboratory and Stanford University have designed a low-cost, long-life "flow" battery that could enable solar and wind energy to become major suppliers to the electrical grid. The research, led by Yi Cui, a Stanford associate professor and member of the Stanford Institute for Materials and Energy Sciences, is a product of the new Joint Center for Energy Storage Research (JCESR), a DOE Energy Innovation Hub. Led by Argonne National Laboratory, with SLAC as major partner, JCESR is one of five such Hubs created by the Department to

152

Final report: Task 4a.2 20% wind scenario assessment of electric grid operational features  

SciTech Connect (OSTI)

Wind integration modeling in electricity generation capacity expansion models is important in that these models are often used to inform political or managerial decisions. Poor representation of wind technology leads to under-estimation of wind's contribution to future energy scenarios which may hamper growth of the industry. The NREL's Wind Energy Deployment System (WinDS) model provides the most detailed representation of geographically disperse renewable resources and the optimization of transmission expansion to access these resources. Because WinDS was selected as the primary modeling tool for the 20% Wind Energy by 2030 study, it is the ideal tool for supplemental studies of the transmission expansion results. However, as the wind industry grows and knowledge related to the wind resource and integration of wind energy into the electric system develops, the WinDS model must be continually improved through additional data and innovative algorithms to capture the primary effects of variable wind generation. The detailed representation of wind technology in the WinDS model can be used to provide improvements to the simplified representation of wind technology in other capacity expansion models. This task did not employ the WinDS model, but builds from it and its results. Task 4a.2 provides an assessment of the electric grid operational features of the 20% Wind scenario and was conducted using power flow models accepted by the utility industry. Tasks 2 provides information regarding the physical flow of electricity on the electric grid which is a critical aspect of infrastructure expansion scenarios. Expanding transmission infrastructure to access remote wind resource in a physically realizable way is essential to achieving 20% wind energy by 2030.

Toole, Gasper L. [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

153

A lightweight inverter for off-grid and grid-connected systems  

SciTech Connect (OSTI)

This paper presents a novel bi-directional power processing topology particularly suitable as an inverter for both grid and off-grid alternative energy systems. All semiconductor devices are soft-switched, thereby allowing higher switching frequencies, improving efficiency, and reducing electromagnetic interference (EMI). The topology may utilize a small, light-weight, and inexpensive high-frequency transformer. Experimental results of a 1 kW bi-directional dc-dc converter are presented.

Barone, F. [Univ. of New South Wales, Sydney, New South Wales (Australia). Centre for Photovoltaic Devices and Systems

1994-12-31T23:59:59.000Z

154

Optimal Residential Solar Photovoltaic Capacity in Grid Connected Applications  

Science Journals Connector (OSTI)

Abstract Microgeneration using solar photovoltaic systems is becoming increasingly popular in residential households as such systems allow households to use a renewable energy source, while also reducing their reliance on the electricity grid, to fulfill their electricity demand. In this study, we explore the attractiveness of PV microgeneration systems of different capacities in the absence of incentives and net metering options and under both flat and variable tariff scenarious. Smaller systems that are below 1 kW in capacity are more attractive under such conditions, however, at current cost levels, they still remain economically unattractive. The cost levels which allow for these PV systems to be economically viable are also determined.

Shisheng Huang; Jingjie Xiao; Joseph F. Pekny; Gintaras V. Reklaitis

2012-01-01T23:59:59.000Z

155

Direct power control of grid connected PV systems with three level NPC inverter  

SciTech Connect (OSTI)

This paper presents the control of a three-level Neutral Point Clamped (NPC) voltage source inverter for grid connected photovoltaic (PV) systems. The control method used is the Extended Direct Power Control (EDPC), which is a generic approach for Direct Power Control (DPC) of multilevel inverters based on geometrical considerations. Maximum Power Point Tracking (MPPT) algorithms, that allow maximal power conversion into the grid, have been included. These methods are capable of extracting maximum power from each of the independent PV arrays connected to each DC link voltage level. The first one is a conventional MPPT which outputs DC link voltage references to EDPC. The second one is based on DPC concept. This new MPPT outputs power increment references to EDPC, thus avoiding the use of a DC link voltage regulator. The whole control system has been tested on a three-level NPC voltage source inverter connected to the grid and results confirm the validity of the method. (author)

Alonso-Martinez, Jaime; Eloy-Garcia, Joaquin; Arnaltes, Santiago [Dept. of Electrical Engineering, University Carlos III of Madrid, Avda. Universidad 30, 28911 Leganes, Madrid (Spain)

2010-07-15T23:59:59.000Z

156

Dynamic Simulation Studies of the Frequency Response of the Three U.S. Interconnections with Increased Wind Generation  

E-Print Network [OSTI]

wind turbine through a gearbox, and uses a conventional "squirrel cage" induction generator directly connected to the grid.

Mackin, Peter

2011-01-01T23:59:59.000Z

157

Transient stability analysis of grid with DFIG wind power plant.  

E-Print Network [OSTI]

??Transient stability is one of the major stability problem associated with the power grid. Hence analysis of transient stability is a major analysis done to (more)

Pettikkattil Radhakrishnan, Jaikumar

2014-01-01T23:59:59.000Z

158

E-Print Network 3.0 - aggregated wind power Sample Search Results  

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

and the increased wind power penetration in power systems the main trend for modern wind turbines is clearly... variable speed operation and grid connection via ... Source: Ris...

159

Using a DFIG-based wind farm for grid node reactive power compensation  

Science Journals Connector (OSTI)

Grid nodes voltages are not allowed to deviate excessively from nominal value. Appropriate measures should be taken to prevent such a deviation. The voltage difference between two nodes is strongly affected by reactive power flow. In contrast to frequency control, node voltage control must be achieved locally. This article investigates the use of a wind farm based on a doubly fed induction generators (DFIG) for reactive power compensation of a grid node. A wind speed variation sample is applied to the model of a wind power unit. The power flow between the stator of the DFIG-based wind power unit and the grid is controlled by using the decoupled active and reactive power vector control method. The limits or capacity of the stator and power converters to consume or provide reactive power are discussed. SIMULINK software has been used for the simulation of the system.

Mohamed Kesraoui; Ahmed Chaib; Abdullah Madri; Bilal Hammani

2013-01-01T23:59:59.000Z

160

Offshore Wind Park Connection to an HVDC Platform, without using an AC Collector Platform.  

E-Print Network [OSTI]

?? This thesis investigates the comparison between two different alternating current topologies of an offshore wind farms connection to an offshore high voltage direct current (more)

Ahmad, Haseeb

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "grid connected wind" 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

Analysis of impacts of wind integration in the Tamil Nadu grid  

Science Journals Connector (OSTI)

As the share of wind in power systems increases, it is important to assess the impact on the grid. This paper combines analysis of load and generation characteristics, generation adequacy and base and peak load variations to assess the future role of wind generation. A simulation of Tamil Nadu in India, with a high penetration of wind power (27% by installed capacity), shows a capacity credit of 22% of the installed wind capacity. For seasonal wind regimes like India, neither the capacity factor, nor the capacity credit reflects the monthly variation in the wind generation. A new approach based on the annual load duration curve has been proposed for generation expansion planning with higher penetration of wind. The potential savings in base and peak capacity required with increasing wind power have been quantified. A future scenario for Tamil Nadu for 2021 has been illustrated. It was found that 5500MW of wind power can save 3200MU of peak energy required or an average peak capacity of 2400 and 1100MW of base capacity. This analysis would be useful to assess the future impacts of increasing wind capacity in grids.

Mel George; Rangan Banerjee

2009-01-01T23:59:59.000Z

162

Implementation of Wind Energy Systems to the Existing Power Grid.  

E-Print Network [OSTI]

??Steady state and transient analysis of a Doubly Fed Induction Generator(DFIG) belonging to a Wind Power Generator is performed. Firstly, the steady state model of (more)

Gogineni, Jalaja

2012-01-01T23:59:59.000Z

163

National Offshore Wind Energy Grid Interconnection Study - Executive...  

Office of Environmental Management (EM)

PJM Renewable Integration Study. Feb. 2012. Accessed July 23, 2014: http:www.pjm.commediacommittees-groupstask-forcesirtfpostingspris-task-1-wind-and-solar-...

164

Fixed-Speed and Variable-Slip Wind Turbines Providing Spinning Reserves to the Grid: Preprint  

SciTech Connect (OSTI)

As the level of wind penetration increases, wind turbine technology must move from merely generating power from wind to taking a role in supporting the bulk power system. Wind turbines should have the capability to provide inertial response and primary frequency (governor) response so they can support the frequency stability of the grid. To provide governor response, wind turbines should be able to generate less power than the available wind power and hold the rest in reserve, ready to be accessed as needed. This paper explores several ways to control wind turbine output to enable reserve-holding capability. This paper focuses on fixed-speed (also known as Type 1) and variable-slip (also known as Type 2) turbines.

Muljadi, E.; Singh, M.; Gevorgian, V.

2012-11-01T23:59:59.000Z

165

Interface behavior of grouted connection on monopile wind turbine offshore structure  

Science Journals Connector (OSTI)

The interface behavior of a concrete grouted connection is studied in a monopile wind turbine offshore structure. The grouted connection between transition piece ... investigating the behavior of grouted connecti...

Ki-Du Kim; Pasin Plodpradit; Bum-Joon Kim

2014-09-01T23:59:59.000Z

166

Considerations Related to Connecting Solar Generating Facilities to the Electrical Grid  

E-Print Network [OSTI]

Considerations Related to Connecting Solar Generating Facilities to the Electrical Grid March 2011 voltages are nominally 4.5kv and 13 2kv The solar system must maintain voltageand 13.2kv. The solar system) or multiple sites (multiple leases, interconnect points, construction forces) Ground based, roof top (weight

Homes, Christopher C.

167

E-Print Network 3.0 - active stall wind Sample Search Results  

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

wind Page: << < 1 2 3 4 5 > >> 1 Power control of a wind farm with active stall wind turbines and AC grid connection Summary: Power control of a wind farm with active stall...

168

Offshore Wind Advanced Technology Demonstration Projects | Department...  

Office of Environmental Management (EM)

will help address key challenges associated with installing full-scale offshore wind turbines, connecting offshore turbines to the power grid, and navigating new permitting and...

169

Energy Department Announces Offshore Wind Demonstration Awardees...  

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

will help address key challenges associated with installing utility-scale offshore wind turbines, connecting offshore turbines to the power grid, and navigating new permitting and...

170

SciTech Connect: Offshore Wind Jobs and Economic Development...  

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

Offshore Wind Jobs and Economic Development Impact: Four Regional Scenarios (Presentation) Citation Details In-Document Search Title: Offshore Wind Jobs and Economic Development...

171

SciTech Connect: Improved Wind Turbine Drivetrain Reliability...  

Office of Scientific and Technical Information (OSTI)

and Renewable Energy Country of Publication: United States Language: English Subject: 17 WIND ENERGY; 97 MATHEMATICS AND COMPUTING NONTORQUE LOADS; WIND TURBINE DRIVETRAIN;...

172

CURRENT SOURCING ISOLATED GRID CONNECTED INVERTER Ilya Zeltser, Student Member, IEEE and Sam Ben-Yaakov, Senior Member, IEEE  

E-Print Network [OSTI]

CURRENT SOURCING ISOLATED GRID CONNECTED INVERTER Ilya Zeltser, Student Member, IEEE and Sam Ben proposes a soft switched Output Current Sourcing (OCS) grid connected inverter that applies a high inverters where the small disturbance at the line voltage may lead to current run away and consequently

173

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

174

Sandia National Laboratories: grid-tied wind-power inverters  

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

wind-power inverters Sandia, DOE Energy Storage Program, GeneSiC Semiconductor, U.S. Army ARDEC: Ultra-High-Voltage Silicon Carbide Thyristors On March 29, 2013, in Capabilities,...

175

What day-ahead reserves are needed in electric grids with high levels of wind power?  

Science Journals Connector (OSTI)

Day-ahead load and wind power forecasts provide useful information for operational decision making, but they are imperfect and forecast errors must be offset with operational reserves and balancing of (real time) energy. Procurement of these reserves is of great operational and financial importance in integrating large-scale wind power. We present a probabilistic method to determine net load forecast uncertainty for day-ahead wind and load forecasts. Our analysis uses data from two different electric grids in the US with similar levels of installed wind capacity but with large differences in wind and load forecast accuracy, due to geographic characteristics. We demonstrate that the day-ahead capacity requirements can be computed based on forecasts of wind and load. For 95% day-ahead reliability, this required capacity ranges from 2100 to 5700MW for ERCOT, and 1900 to 4500MW for MISO (with 10 GW of installed wind capacity), depending on the wind and load forecast values. We also show that for each MW of additional wind power capacity for ERCOT, 0.160.30MW of dispatchable capacity will be used to compensate for wind uncertainty based on day-ahead forecasts. For MISO (with its more accurate forecasts), the requirement is 0.070.13MW of dispatchable capacity for each MW of additional wind capacity.

Brandon Mauch; Jay Apt; Pedro M S Carvalho; Paulina Jaramillo

2013-01-01T23:59:59.000Z

176

How do Wind and Solar Power Affect Grid Operations: The Western Wind and Solar Integration Study; Preprint  

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

17 17 September 2009 How do Wind and Solar Power Affect Grid Operations: The Western Wind and Solar Integration Study Preprint D. Lew and M. Milligan National Renewable Energy Laboratory G. Jordan, L. Freeman, N. Miller, K. Clark, and R. Piwko GE To be presented at the 8th International Workshop on Large Scale Integration of Wind Power and on Transmission Networks for Offshore Wind Farms Bremen, Germany October 14-15, 2009 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (ASE), a contractor of the US Government under Contract No. DE-AC36-08-GO28308. Accordingly, the US Government and ASE retain a nonexclusive royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for US Government purposes.

177

New Battery Design Could Help Solar and Wind Power the Grid  

Broader source: Energy.gov [DOE]

Researchers from the U.S. Department of Energys (DOE) SLAC National Accelerator Laboratory and Stanford University have designed a low-cost, long-life flow battery that could enable solar and wind energy to become major suppliers to the electrical grid.

178

Dynamic Characteristic of the Drive Train of DFIG Wind Turbines during Grid Faults  

Science Journals Connector (OSTI)

During a grid voltage drop ,a problem is resonances in the drive-train shaft between the wind turbine and induction generator. Disadvantageous effects caused by this are noticeable vibrations and high mechanical stresses due to torque oscillations. The ... Keywords: damping control, drive train model, drive train shaft, torque oscillation

Yao Xingjia; Liang Lizhe; Xing Zuoxia

2009-10-01T23:59:59.000Z

179

Grid-friendly wind power systems based on the synchronverter technology  

Science Journals Connector (OSTI)

Abstract Back-to-back PWM converters are becoming a realistic alternative to conventional converters in high-power wind power applications. In this paper, a control strategy based on the synchronverter technology is proposed for back-to-back PWM converters. Both converters are run as synchronverters, which are mathematically equivalent to the conventional synchronous generators. The rotor-side converter is responsible for maintaining the DC link voltage and the grid-side converter is responsible for the maximum power point tracking (MPPT). As the two converters are operated using the synchronverter technology, the formed wind power system becomes more friendly to the grid. Extensive real-time digital simulation results are presented to verify the effectiveness of the proposed method under normal operation and grid-fault scenarios.

Qing-Chang Zhong; Zhenyu Ma; Wen-Long Ming; George C. Konstantopoulos

2015-01-01T23:59:59.000Z

180

MHK Projects/Evopod E1 1 10 scale grid connected demonstrator | Open Energy  

Open Energy Info (EERE)

Evopod E1 1 10 scale grid connected demonstrator Evopod E1 1 10 scale grid connected demonstrator < MHK Projects Jump to: navigation, search << Return to the MHK database homepage Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":5,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":"","icon":"File:Aquamarine-marker.png","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":54.388,"lon":-5.566,"alt":0,"address":"","icon":"http:\/\/prod-http-80-800498448.us-east-1.elb.amazonaws.com\/w\/images\/7\/74\/Aquamarine-marker.png","group":"","inlineLabel":"","visitedicon":""}]}

Note: This page contains sample records for the topic "grid connected wind" 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

Assessing the Reliability and Economics of Wide-Scale Grid-Connected  

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

Assessing the Reliability and Economics of Wide-Scale Grid-Connected Assessing the Reliability and Economics of Wide-Scale Grid-Connected Distributed Energy Generation with Application to Electric Power Systems Under Stress Speaker(s): Hisham Zerriffi Date: November 13, 2003 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Kristina LaCommare Electric power systems can be disrupted due to a variety of stress circumstances. These can range from constraints on the physical infrastructure as a result of under-capacity problems to deliberate attacks in times of conflict. Stress conditions can manifest themselves in a variety of ways and determining both the nature of the stress and the best mathematical representation of that stress in the model is complicated. This talk details a quantitative comparison of the reliability of an

182

MHK Projects/Evopod E35 35kW grid connected demonstrator | Open Energy  

Open Energy Info (EERE)

E35 35kW grid connected demonstrator E35 35kW grid connected demonstrator < MHK Projects Jump to: navigation, search << Return to the MHK database homepage Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":5,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":"","icon":"File:Aquamarine-marker.png","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":55.3028,"lon":-5.59772,"alt":0,"address":"","icon":"http:\/\/prod-http-80-800498448.us-east-1.elb.amazonaws.com\/w\/images\/7\/74\/Aquamarine-marker.png","group":"","inlineLabel":"","visitedicon":""}]}

183

From wind power to heat pumps (Smart Grid Project) | Open Energy  

Open Energy Info (EERE)

From wind power to heat pumps (Smart Grid Project) From wind power to heat pumps (Smart Grid Project) Jump to: navigation, search Project Name From wind power to heat pumps 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":""}]}

184

Empirical Analysis of the Variability of Wind Generation in India: Implications for Grid Integration  

SciTech Connect (OSTI)

We analyze variability in load and wind generation in India to assess its implications for grid integration of large scale wind projects using actual wind generation and load data from two states in India, Karnataka and Tamil Nadu. We compare the largest variations in load and net load (load ?wind, i.e., load after integrating wind) that the generation fleet has to meet. In Tamil Nadu, where wind capacity is about 53percent of the peak demand, we find that the additional variation added due to wind over the current variation in load is modest; if wind penetration reaches 15percent and 30percent by energy, the additional hourly variation is less than 0.5percent and 4.5percent of the peak demand respectively for 99percent of the time. For wind penetration of 15percent by energy, Tamil Nadu system is found to be capable of meeting the additional ramping requirement for 98.8percent of the time. Potential higher uncertainty in net load compared to load is found to have limited impact on ramping capability requirements of the system if coal plants can me ramped down to 50percent of their capacity. Load and wind aggregation in Tamil Nadu and Karnataka is found to lower the variation by at least 20percent indicating the benefits geographic diversification. These findings suggest modest additional flexible capacity requirements and costs for absorbing variation in wind power and indicate that the potential capacity support (if wind does not generate enough during peak periods) may be the issue that has more bearing on the economics of integrating wind

Phadke, Amol; Abhyankar, NIkit; Rao, Poorvi

2014-06-17T23:59:59.000Z

185

Public Meeting: Physical Characterization of Smart and Grid-Connected Commercial and Residential Building End-Use Equipment and Appliances  

Broader source: Energy.gov [DOE]

These documents contain slide decks presented at the Physical Characterization of Smart and Grid-Connected Commercial and Residential Buildings End-Use Equipment and Appliances public meeting held on April 30, 2014.

186

Design of control circuit of grid-connected photovoltaic system based on SPMC75F2413A  

Science Journals Connector (OSTI)

This paper discusses the experimental design of a grid-*connected photovoltaic system based on 16-bit Microprocessor (MCU) SPMC75F2413A. In this paper, the SPMC75F2413A as the main topology control the main circuit of the Single-phase bridge type inverter. The system can track the maximum power point by detecting PV(photovoltaic) voltage, current and grid-connected output voltage and current, and simultaneously can track the frequency and phase by the software phase locked loop. The testing results of the grid-connected photovoltaic system shows that the grid-connected voltage and network voltage are synchronous, and the system is feasible and practical.

Ma Hongmei; Li Peng; Zhang Dan

2010-01-01T23:59:59.000Z

187

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

SciTech Connect (OSTI)

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

Not Available

2011-10-01T23:59:59.000Z

188

Wavelet technique based islanding detection and improved repetitive current control for reliable operation of grid-connected PV systems  

Science Journals Connector (OSTI)

Abstract Recent years have witnessed a thrust towards the use of solar energy as the major renewable energy source for distributed power generation. The proposed system requires reliable detection technique and suitable current control strategy for proper operation. This paper focuses on plug-in repetitive current (RC) control strategy for grid connected inverter system and wavelet technique for electrical grid status identification. The performance of proposed current control technique employed for grid connected inverter system under distorted and unbalanced grid voltage is compared with the existing conventional methods like PI and PR controller. This controller uses the feedback control system for attenuating periodic disturbances, improving high quality sinusoidal output current and high power factor. The proposed scheme employs fourth order infinite impulse response (IIR) filter for maintaining its resonance frequency, output frequency matching with grid fundamental frequency and reduction of harmonics. The DC-DC boost converter implements incremental conductance based (INC) maximum power point tracker (MPPT) algorithm. The effects of LCL filter for improving disturbance rejection capability and dynamic performance of the proposed system is also demonstrated. Grid connected PV inverter employs wavelet technique for an islanding detection functionality in order to determine the status of the electrical grid. In order to show the effectiveness of the proposed algorithm, modeling and simulation for grid connected PV system is performed using MATLAB/SIMULINK and its PowerSim toolbox.

Smitha Joyce Pinto; Gayadhar Panda

2015-01-01T23:59:59.000Z

189

Study of the implementation of STATCOM on DFIG-based wind farm connected to a power system  

Science Journals Connector (OSTI)

The integration of Doubly Fed Induction Generator (DFIG) based wind farm into the power grid has become a major concern for power system engineers today. Voltage stability is a key factor to maintain DFIG-based wind farm in service during the grid disturbances. ...

Tarek Medalel Masaud; P. K. Sen

2012-01-01T23:59:59.000Z

190

EWIS European wind integration study (Smart Grid Project) (Portugal) | Open  

Open Energy Info (EERE)

Portugal) Portugal) Jump to: navigation, search Project Name EWIS European wind integration study Country Portugal Coordinates 39.095963°, -8.217773° 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":39.095963,"lon":-8.217773,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

191

EWIS European wind integration study (Smart Grid Project) (Denmark) | Open  

Open Energy Info (EERE)

Denmark) Denmark) Jump to: navigation, search Project Name EWIS European wind integration study 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":""}]}

192

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

193

A stochastic framework for the grid integration of wind power using flexible load approach  

Science Journals Connector (OSTI)

Abstract Wind power integration has always been a key research area due to the green future power system target. However, the intermittent nature of wind power may impose some technical and economic challenges to Independent System Operators (ISOs) and increase the need for additional flexibility. Motivated by this need, this paper focuses on the potential of Demand Response Programs (DRPs) as an option to contribute to the flexible operation of power systems. On this basis, in order to consider the uncertain nature of wind power and the reality of electricity market, a Stochastic Network Constrained Unit Commitment associated with DR (SNCUCDR) is presented to schedule both generation units and responsive loads in power systems with high penetration of wind power. Afterwards, the effects of both price-based and incentive-based \\{DRPs\\} are evaluated, as well as DR participation levels and electricity tariffs on providing a flexible load profile and facilitating grid integration of wind power. For this reason, novel quantitative indices for evaluating flexibility are defined to assess the success of \\{DRPs\\} in terms of wind integration. Sensitivity studies indicate that DR types and customer participation levels are the main factors to modify the system load profile to support wind power integration.

E. Heydarian-Forushani; M.P. Moghaddam; M.K. Sheikh-El-Eslami; M. Shafie-khah; J.P.S. Catalo

2014-01-01T23:59:59.000Z

194

IEEE TRANSACTIONS ON SMART GRID, VOL. 4, NO. 1, MARCH 2013 509 Optimized Control of DFIG-Based Wind  

E-Print Network [OSTI]

-scale wind farm has become a critical issue for the development of renewable energy systems and their integration into the power grid to provide reliable, secure, and efficient electricity. Among many enabling, sensitivity analysis, smart grid. I. INTRODUCTION WITH THE continuous increase of energy demand

He, Haibo

195

Electrical Power Grid Delivery Dynamic Analysis: Using Prime Mover Engines to Balance Dynamic Wind Turbine Output  

SciTech Connect (OSTI)

This paper presents an investigation into integrated wind + combustion engine high penetration electrical generation systems. Renewable generation systems are now a reality of electrical transmission. Unfortunately, many of these renewable energy supplies are stochastic and highly dynamic. Conversely, the existing national grid has been designed for steady state operation. The research team has developed an algorithm to investigate the feasibility and relative capability of a reciprocating internal combustion engine to directly integrate with wind generation in a tightly coupled Hybrid Energy System. Utilizing the Idaho National Laboratory developed Phoenix Model Integration Platform, the research team has coupled demand data with wind turbine generation data and the Aspen Custom Modeler reciprocating engine electrical generator model to investigate the capability of reciprocating engine electrical generation to balance stochastic renewable energy.

Diana K. Grauer; Michael E. Reed

2011-11-01T23:59:59.000Z

196

Grid Impacts of Wind Power: A Summary of Recent Studies in the United States; Preprint  

SciTech Connect (OSTI)

Several detailed technical investigations of grid ancillary service impacts of wind power plants in the United States have recently been performed. These studies were applied to Xcel Energy (in Minnesota) and PacifiCorp and the Bonneville Power Administration (both in the northwestern United States). Although the approaches vary, three utility time frames appear to be most at issue: regulation, load following, and unit commitment. This paper describes and compares the analytic frameworks from recent analysis and discusses the implications and cost estimates of wind integration. The findings of these studies indicate that relatively large-scale wind generation will have an impact on power system operation and costs, but these impacts and costs are relatively low at penetration rates that are expected over the next several years.

Parsons, B.; Milligan, M.; Zavadil, B.; Brooks, D.; Kirby, B.; Dragoon, K.; Caldwell, J.

2003-06-01T23:59:59.000Z

197

Security constrained generation scheduling for grids incorporating wind, photovoltaic and thermal power  

Science Journals Connector (OSTI)

Abstract In this paper, security constrained generation scheduling (SCGS) problem for a grid incorporating thermal, wind and photovoltaic (PV) units is formulated. The formulation takes into account the stochastic nature of both wind and PV power output and imbalance charges due to mismatch between the actual and scheduled wind and PV power outputs. A hybrid technique in which the basic elements are a genetic algorithm (GA) with artificial neural network (ANN) and a priority list (PL) is used to minimize the total operating costs while satisfying all operational constraints considering both conventional and renewable energy generators. Numerical results are reported and discussed based on the simulation performed on the IEEE 24-bus reliability test system. The results demonstrate the efficiency of the proposed approach to reduce the total production cost for real time operation. Moreover, the results verified that the proposed approach can be applied to different problem dimensions and can score more favorably compared with analytical techniques.

Azza A. ElDesouky

2014-01-01T23:59:59.000Z

198

Controller for a small induction-generator based wind-turbine  

Science Journals Connector (OSTI)

Design of a low-cost micro-controller for a small induction-generator based grid-connected wind-turbine is presented in this paper. The controller senses the parameters of the wind-turbine generator and the grid, and makes decisions about grid connection and disconnection. Low-cost instrumentation circuitry has been developed to measure the generator and grid parameters. Based on the measurement of voltage and frequency of the wind-turbine generator and the grid side, a control decision is taken to connect the system to the grid. The controller makes decision to disconnect the system from the grid based on the power flow measurement between the wind turbine and the grid. The power flow between wind turbine and the grid depends upon the availability of the wind. The prototype controller has been developed based on a micro-controller PIC16F877 and has been tested in the laboratory.

R. Ahshan; M.T. Iqbal; George K.I. Mann

2008-01-01T23:59:59.000Z

199

Grid Integration  

Broader source: Energy.gov [DOE]

The Wind Program works with electric grid operators, utilities, regulators, and industry to create new strategies for incorporating increasing amounts of wind energy into the power system while maintaining economic and reliable operation of the grid.

200

Artificial neural network based models for forecasting electricity generation of grid connected solar PV power plant  

Science Journals Connector (OSTI)

This paper presents an artificial neural network (ANN) approach for forecasting the performance of electric energy generated output from a working 25-kWp grid connected solar PV system and a 100-kWp grid connected PV system installed at Minicoy Island of Union Territory of Lakshadweep Islands. The ANN interpolates among the solar PV generation output and relevant parameters such as solar radiation, module temperature and clearness index. In this study, three ANN models are implemented and validated with reasonable accuracy on real electric energy generation output data. The first model is univariate based on solar radiation and the output values. The second model is a multivariate model based on module temperature along with solar radiation. The third model is also a multivariate model based on module temperature, solar radiation and clearness index. A forecasting performance measure such as percentage root mean square error has been presented for each model. The second model, which gives the most accurate results, has been used in forecasting the generation output for another PV system with similar accuracy.

Imtiaz Ashraf; A. Chandra

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "grid connected wind" 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

Measurement system design and implementation for grid-connected marine substation  

Science Journals Connector (OSTI)

A marine substation for a grid-connected wave power plant has been designed and constructed at Uppsala University. The measurement system for the substation has been developed from basics, and the procedure is described in this article. Subsea electrical installations set high constraints on the control and data acquisition systems used, and traditional GSM networks and GPS time synchronization aredifficult and inefficient. These circumstances exclude many well-proven methods to be utilized. AcompactRIO-based system, with integrated real-time controller and Field-Programmable Gate Array chip, is chosen as most suitable for this task. The system is designed to meet the special requirements encountered in this unusual application, including large data sampling, grid connection control and protection systems. The system is communicating to shore via a subsea copper cable and single-pair high-speed digital subscriber line modems. The design was successful and full-fills all the system requirements. The aim of the article is to provide future researchers with a good design and implementation procedure for setting up large measurement systems.

Rickard Ekstrm; Venugopalan Kurupath; Olle Svensson; Mats Leijon

2013-01-01T23:59:59.000Z

202

New England Wind Forum: Wind Power Technology  

Wind Powering America (EERE)

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

203

Using a DFIG based wind turbine for grid current harmonics filtering  

Science Journals Connector (OSTI)

Abstract In this paper a variable speed doubly fed induction generator (DFIG) based wind energy conversion system (WECS) is employed for simultaneous power generation and grid harmonic current filtering. WECS active and reactive powers are controlled using vector control strategy. An improved harmonic isolator in the time domain, based on a new high selective signal detector or filter (HSF) has been used. Since the polluting currents contain direct and reverse harmonics of (6k1) order, the HSF can be used to isolate one particular harmonic or the whole harmonic components. The compensation technique of the whole harmonic components of the grid current is chosen. The rotor side converter (RSC) control structure has been modified in order to include the filtering task. Simulation for a 3MW WECS with DFIG at two different wind speeds (8m/s and 12m/s) has been performed. Results showed that in addition to power generation, grid current harmonics filtering action is achieved by the WECS and a decrease by 4% of the total harmonic distortion is obtained.

M. Kesraoui; A. Chaib; A. Meziane; A. Boulezaz

2014-01-01T23:59:59.000Z

204

Modeling Framework and Validation of a Smart Grid and Demand Response System for Wind Power Integration  

SciTech Connect (OSTI)

Electricity generation from wind power and other renewable energy sources is increasing, and their variability introduces new challenges to the power system. The emergence of smart grid technologies in recent years has seen a paradigm shift in redefining the electrical system of the future, in which controlled response of the demand side is used to balance fluctuations and intermittencies from the generation side. This paper presents a modeling framework for an integrated electricity system where loads become an additional resource. The agent-based model represents a smart grid power system integrating generators, transmission, distribution, loads and market. The model incorporates generator and load controllers, allowing suppliers and demanders to bid into a Real-Time Pricing (RTP) electricity market. The modeling framework is applied to represent a physical demonstration project conducted on the Olympic Peninsula, Washington, USA, and validation simulations are performed using actual dynamic data. Wind power is then introduced into the power generation mix illustrating the potential of demand response to mitigate the impact of wind power variability, primarily through thermostatically controlled loads. The results also indicate that effective implementation of Demand Response (DR) to assist integration of variable renewable energy resources requires a diversity of loads to ensure functionality of the overall system.

Broeer, Torsten; Fuller, Jason C.; Tuffner, Francis K.; Chassin, David P.; Djilali, Ned

2014-01-31T23:59:59.000Z

205

Statistics for PV, wind and biomass generators and their impact on distribution grid planning  

Science Journals Connector (OSTI)

The integration of renewable energy generation leads to major challenges for distribution grid operators. When the feed-in of photovoltaic (PV), biomass and wind generators exceed significantly the local consumption, large investments are needed. To improve the knowledge on the interaction between these technologies, statistical information for load curves, correlation coefficients and general feed-in behavior is derived. These derivations are based on measured data of different generators in a German distribution area. In this paper, we give new insights useful for the dimensioning of grid structures and assets. Furthermore, an approach is presented which allows the calculation of the maximum and minimum feed-in resulting from different combinations of the considered technologies.

Stefan Nykamp; Albert Molderink; Johann L. Hurink; Gerald J.M. Smit

2012-01-01T23:59:59.000Z

206

SciTech Connect: Taming the Grid: Dynamic Load Composition Quantificat...  

Office of Scientific and Technical Information (OSTI)

Taming the Grid: Dynamic Load Composition Quantification at the Distribution-Transformer Level Citation Details In-Document Search Title: Taming the Grid: Dynamic Load Composition...

207

Optimum penetration of utility-scale grid-connected solar photovoltaic systems in Illinois  

Science Journals Connector (OSTI)

Abstract Although solar photovoltaics (PV) are recognized as a promising source of clean energy production, researchers and policy makers need to know the optimum level of solar PV capacity penetration into the existing generation structure under the current fuel mix for the region. As the level of installed PV capacity increases, it is possible that the aggregated generation mix could produce electrical power exceeding electrical demand, thus requiring generator curtailment. Therefore, determining the optimum penetration of large-scale PV and aggregated technical and economic benefits is becoming an issue for both power utilities and policy makers. We report the development and validation of a new methodology for assessing the optimum capacity and benefits of state-wide grid-connected large scale solar PV systems in Illinois. The solar carve-out portion of the current renewable portfolio standard is also evaluated within the context of the state's sustainable energy plan for the near term future.

J.H. Jo; D.G. Loomis; M.R. Aldeman

2013-01-01T23:59:59.000Z

208

PVWATTS Version 2 - Enhanced Spatial Resolution for Calculating Grid-Connected PV Performance: Preprint  

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

PVWATTS Version 2 - PVWATTS Version 2 - Enhanced Spatial Resolution for Calculating Grid-Connected PV Performance Preprint October 2001 * NREL/CP-560-30941 B. Marion, M. Anderberg, R. George, P. Gray-Hann, and D. Heimiller To be presented at the NCPV Program Review Meeting Lakewood, Colorado 14-17 October 2001 National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401-3393 NREL is a U.S. Department of Energy Laboratory Operated by Midwest Research Institute * * * * Battelle * * * * Bechtel Contract No. DE-AC36-99-GO10337 NOTICE The submitted manuscript has been offered by an employee of the Midwest Research Institute (MRI), a contractor of the US Government under Contract No. DE-AC36-99GO10337. Accordingly, the US Government and MRI retain a nonexclusive royalty-free license to publish or reproduce the published

209

Agenda for Public Meeting on the Physical Characterization of Grid-Connected Commercial and Residential Buildings End-Use Equipment and Appliances  

Broader source: Energy.gov [DOE]

Download the agenda below for the July 11 Public Meeting on the Physical Characterization of Grid-Connected Commercial and Residential Buildings End-Use Equipment and Appliances.

210

The Political Economy of Wind Power in China  

E-Print Network [OSTI]

coal-fired power plants each week,? and wind powers currentwind-generated electricity (as contrasted with coal-fired power plants).fired power plants and the number of grid-connected wind

Swanson, Ryan Landon

2011-01-01T23:59:59.000Z

211

Maximum wind energy contribution in autonomous electrical grids based on thermal power stations  

Science Journals Connector (OSTI)

Greek islands cover their continuously increasing electricity demand on the basis of small autonomous thermal power stations. This electrification solution is related with increased operational cost and power insufficiency, especially during summer. On the other hand, the stochastic behaviour of the wind and the important fluctuations of daily and seasonal electricity load in almost all Greek islands pose a substantial penetration limit for the exploitation of the high wind potential of the area. In this context, the present study is concentrated on developing an integrated methodology which can estimate the maximum wind energy contribution to the existing autonomous electrical grids, using the appropriate stochastic analysis. For this purpose one takes into account the electrical demand probability density profile of every island under investigation as well as the operational characteristics of the corresponding thermal power stations. Special attention is paid in order to protect the existing internal combustion engines from unsafe operation below their technical minima as well as to preserve the local system active power reserve and the corresponding dynamic stability. In order to increase the reliability of the results obtained, one may use extensive information for several years. Finally, the proposed study is integrated with an appropriate parametrical analysis, investigating the impact of the main parameters variation on the expected maximum wind energy contribution.

J.K. Kaldellis

2007-01-01T23:59:59.000Z

212

Nebraska/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Nebraska/Wind Resources Nebraska/Wind Resources < Nebraska Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Nebraska Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid?

213

Alabama/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Alabama/Wind Resources Alabama/Wind Resources < Alabama Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Alabama Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid?

214

Florida/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Florida/Wind Resources Florida/Wind Resources < Florida Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Florida Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid?

215

Vermont/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Vermont/Wind Resources Vermont/Wind Resources < Vermont Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Vermont Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid?

216

Wisconsin/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Wisconsin/Wind Resources Wisconsin/Wind Resources < Wisconsin Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Wisconsin Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid?

217

Idaho/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Idaho/Wind Resources Idaho/Wind Resources < Idaho Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Idaho Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid?

218

Missouri/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Missouri/Wind Resources Missouri/Wind Resources < Missouri Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Missouri Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid?

219

Iowa/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Iowa/Wind Resources Iowa/Wind Resources < Iowa Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Iowa Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid?

220

Maryland/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Maryland/Wind Resources Maryland/Wind Resources < Maryland Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Maryland Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid?

Note: This page contains sample records for the topic "grid connected wind" 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

Minnesota/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Minnesota/Wind Resources Minnesota/Wind Resources < Minnesota Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Minnesota Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid?

222

Hawaii/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Hawaii/Wind Resources Hawaii/Wind Resources < Hawaii Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Hawaii Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid?

223

Alaska/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Alaska/Wind Resources Alaska/Wind Resources < Alaska Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Alaska Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid?

224

Wyoming/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Wyoming/Wind Resources Wyoming/Wind Resources < Wyoming Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Wyoming Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid?

225

Nevada/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Nevada/Wind Resources Nevada/Wind Resources < Nevada Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Nevada Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid?

226

Kansas/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Kansas/Wind Resources Kansas/Wind Resources < Kansas Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Kansas Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid?

227

Louisiana/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Louisiana/Wind Resources Louisiana/Wind Resources < Louisiana Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Louisiana Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid?

228

Oregon/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Oregon/Wind Resources Oregon/Wind Resources < Oregon Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Oregon Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid?

229

Kentucky/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Kentucky/Wind Resources Kentucky/Wind Resources < Kentucky Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Kentucky Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid?

230

Development of an economical model to determine an appropriate feed-in tariff for grid-connected solar PV electricity in all states of Australia  

Science Journals Connector (OSTI)

Australia is a country with a vast amount of natural resources including sun and wind. Australia lies between latitude of 1045S and longitude of 112152E, with a daily solar exposure of between less than 3MJ/(m2day) in winter and more than 30MJ/(m2day) in summer. Global solar radiation in Australia varies between minimum of 3285MJ/(m2year) in Hobart to 8760MJ/(m2year) in Northern Territory. As a result of this wide range of radiation level there will be a big difference between costs of solar PV electricity in different locations. A study we have recently conducted on the solar PV electricity price in all states of Australia. For this purpose we have developed an economical model and a computer simulation to determine the accurate unit price of grid-connected roof-top solar photovoltaic (PV) electricity in A$/kWh for all state of Australia. The benefit of this computer simulation is that we can accurately determine the most appropriate feed-in tariff of grid-connected solar PV energy system. The main objective of this paper is to present the results of this study. A further objective of this paper is to present the details of the unit price of solar PV electricity in the state of Victoria in each month and then to compare with electricity price from conventional power systems, which is currently applied to this state. The state Victoria is located south of Australia and in terms of sun radiation is second lowest compared with the other Australian states. The computer simulation developed for this study makes it possible to determine the cost of grid-connected solar PV electricity at any location in any country based on availability of average daily solar exposure of each month as well as economical factors of the country.

A. Zahedi

2009-01-01T23:59:59.000Z

231

Dynamic Analysis of Floating Wind Turbines During Pitch Actuator Fault, Grid Loss, and Shutdown  

Science Journals Connector (OSTI)

Abstract Coupled non-linear aero-hydro-servo-elastic simulations of three types of floating wind turbines (spar, semi- submersible, and tension leg platform) are carried out for several fault cases over a range of environmental conditions based on correlated wind and wave data from the North Sea. Three particular fault scenarios are considered: 1) blade seize, where the pitch actuator of one blade is blocked, 2) blade seize, recognized by the controller and followed by shutdown (grid disconnection and aerodynamic braking), and 3) grid loss followed by shutdown. The platform motions and structural loads caused by fault events are compared to loads encountered during normal operation and during selected extreme weather conditions. Although the global motions and mooring line loads tend to be largest during stormaconditions, selected platforms experience large pitch or yaw motions due to blade seize and shutdown. Imbalance loads due to blade seize can lead to particularly large loads on the blades and tower, andethe shutdown process can impose relatively large edgewise blade loads.

Erin E. Bachynski; Mahmoud Etemaddar; Marit I. Kvittem; Chenyu Luan; Torgeir Moan

2013-01-01T23:59:59.000Z

232

A Control Methodology for DFIG Type Wind Turbines Connected to Distribution Networks  

E-Print Network [OSTI]

A Control Methodology for DFIG Type Wind Turbines Connected to Distribution Networks N. K. Roy, H.roy.h.pota.md.mahmud)@adfa.edu.au Ahstract-This paper proposes a decentralised controller design for doubly-fed induction generators (DFIGs in operating conditions. Index Terms-distributed generation (DG), DFIG, H= norm, linear quadratic Gaussian (LQG

Pota, Himanshu Roy

233

Empirical Analysis of the Variability of Wind Generation in India: Implications for Grid Integration  

E-Print Network [OSTI]

Operations: A Review of Wind Integration Studies to Date. Analysis of Impacts of Wind Integration in the Tamil Nadu2009. Calculating Wind Integration Costs: Separating Wind

Phadke, Amol

2014-01-01T23:59:59.000Z

234

Regenerative air energy storage for remote winddiesel 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 0.5MW and 1MWh 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

235

Experimental Verification of a Voltage Droop Control for Grid Integration of Offshore Wind Farms Using Multi-terminal HVDC  

Science Journals Connector (OSTI)

Abstract This paper presents an experimental verification of a voltage droop control for a multi-terminal HVDC system for the grid integration of offshore wind farms. The laboratory setup is composed by four voltage-source converter terminals which aim to emulate behavior of the future power grid in the North Sea, where Norway, Germany and the UK are interconnected together with an offshore wind farm. Two main scenarios have been performed to test the robustness of the droop-control strategy: variation in wind power, including changes in the parameters of the droop line, and the sudden disconnection of converter terminal during full wind production. In all performed cases, the implemented system was able to ensure that the voltage stays within its steady state limits and to reach a stable operation point.

Raymundo E. Torres-Olguin; Atle R. rdal; Hanne Stylen; Atsede G. Endegnanew; Kjell Ljkelsy; John Olav Tande

2014-01-01T23:59:59.000Z

236

Small Wind Guidebook | Open Energy Information  

Open Energy Info (EERE)

Small Wind Guidebook Small Wind Guidebook Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid? * State Information Portal * Glossary of Terms

237

Small Wind Guidebook/How Do I Choose the Best Site for My Wind Turbine |  

Open Energy Info (EERE)

Small Wind Guidebook/How Do I Choose the Best Site for My Wind Turbine Small Wind Guidebook/How Do I Choose the Best Site for My Wind Turbine < Small Wind Guidebook Jump to: navigation, search Print PDF WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid? * State Information Portal * Glossary of Terms

238

Risk-Mitigated Optimal Power Flow for Wind Powered Grids Emma Sjodin, Dennice F. Gayme and Ufuk Topcu  

E-Print Network [OSTI]

." High grid penetrations of solar or wind power pose a number of operational challenges and it is widely transmission capacity [10]. Until now, the power industry has dealt with potential failures using deterministic, Baltimore, MD, USA, 21218. dennice@jhu.edu U. Topcu is with Control and Dynamical Systems at the California

Low, Steven H.

239

Detailed study of DFIG-based wind turbines to overcome the most severe grid faults  

Science Journals Connector (OSTI)

Abstract This paper studies the effects of voltage sags caused by faults on doubly-fed induction generators to overcome grid faults. A wide range of sag duration and depth values is considered. It is observed that sag duration influence is periodical. Sag effects depend on duration and depth and on the fault-clearing process as well. Two approaches of the model are compared: the most accurate approach, discrete sag, considers that the fault is cleared in the successive natural fault-current zeros of affected phases, leading to a voltage recovery in several steps; the least accurate approach, abrupt sag, considers that the fault is cleared instantaneously in all affected phases, leading to a one-step voltage recovery. Comparison between both sag models reveals that the fault-clearing process smoothes sag effects. The study assumes that the rotor-side converter can keep constant the transformed rotor current in the synchronous reference frame, thus providing insights into wind turbine fault ride-through capability. The voltage limit of the rotor-side converter is considered to show the situations where the rotor current can be controlled. Finally, a table and a 3D figure summarizing the effects of the most severe grid faults on the rotor-side converter to overcome the most severe faults are provided.

Alejandro Roln; Joaqun Pedra; Felipe Crcoles

2014-01-01T23:59:59.000Z

240

Compatibility Study of Protective Relaying in a Grid-Connected Fuel Cell  

SciTech Connect (OSTI)

A 200-kW fuel cell produced by International Fuel Cells (IFC), a United Technologies Company, began operation at the National Transportation Research Center (NTRC) in early June 2003. The NTRC is a joint Oak Ridge National laboratory (ORNL) and University of Tennessee research facility located in Knoxville, Tennessee. This research activity investigated the protective relaying functions of this fully commercialized fuel cell power plant, which uses ''synthesized'' protective relays. The project's goal is to characterize the compatibility between the fuel cell's interconnection protection system and the local distribution system or electric power system (EPS). ORNL, with assistance from the Electric Power Research Institute-Power Electronics Applications Center (EPRI-PEAC) in Knoxville, Tennessee, monitored and characterized the system compatibility over a period of 6 months. Distribution utility engineers are distrustful of or simply uncomfortable with the protective relaying and hardware provided as part of distributed generation (DG) plants. Part of this mistrust is due to the fact that utilities generally rely on hardware from certain manufacturers whose reliability is well established based on performance over many years or even decades. Another source of concern is the fact that fuel cells and other types of DG do not use conventional relays but, instead, the protective functions of conventional relays are simulated by digital circuits in the distributed generator's grid interface control unit. Furthermore, the testing and validation of internal protection circuits of DG are difficult to accomplish and can be changed by the vendor at any time. This study investigated and documented the safety and protective relaying present in the IFC fuel cell, collected data on the operation of the fuel cell, recorded event data during EPS disturbances, and assessed the compatibility of the synthesized protective circuits and the local distribution system. The project also addressed other important and timely issues. For instance, the study includes an evaluation of the effectiveness of the fuel cell's synthesized relay protection scheme relative to the recently issued IEEE 1547 interconnection standard. Together, these activities should serve to reduce the number of unknowns pertaining to unconventional protective circuits, to the benefit of DG manufacturers, vendors, prospective and current users of DG, and electricity suppliers/distributors. Although more grid-connect fuel cell interruptions were encountered in this study than originally anticipated, and the investigation and findings became quite complex, every effort was made to clearly summarize the interconnection causes and issues throughout the report and especially in the summary found in Sect. 4. ORNL's funding of this study is sponsored equally by (1) the Department of Energy's (DOE's) Office of Distributed Energy Resources and (2) the Distributed Generation Technologies program of the Tennessee Valley Authority (TVA).

Staunton, R.H.

2004-04-15T23:59:59.000Z

Note: This page contains sample records for the topic "grid connected wind" 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

Small Wind Guidebook/What Size Wind Turbine Do I Need | Open Energy  

Open Energy Info (EERE)

What Size Wind Turbine Do I Need What Size Wind Turbine Do I Need < Small Wind Guidebook Jump to: navigation, search Print PDF WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid? * State Information Portal * Glossary of Terms * For More Information What Size Wind Turbine Do I Need?

242

Small Wind Guidebook/Is There Enough Wind on My Site | Open Energy  

Open Energy Info (EERE)

There Enough Wind on My Site There Enough Wind on My Site < Small Wind Guidebook Jump to: navigation, search Print PDF WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid? * State Information Portal * Glossary of Terms * For More Information Is There Enough Wind on My Site?

243

Small Wind Guidebook/What Do Wind Systems Cost | Open Energy Information  

Open Energy Info (EERE)

What Do Wind Systems Cost What Do Wind Systems Cost < Small Wind Guidebook Jump to: navigation, search Print PDF WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid? * State Information Portal * Glossary of Terms * For More Information What Do Wind Systems Cost?

244

Wisconsin Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Wind Resources Wind Resources Jump to: navigation, search Print PDF WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid? * State Information Portal * Glossary of Terms * For More Information Wisconsin Wind Resources WisconsinMap.jpg Retrieved from

245

Category:Small Wind Guidebook Pages | Open Energy Information  

Open Energy Info (EERE)

Guidebook Pages Guidebook Pages Jump to: navigation, search This is the category containing the Small Wind Guidebook pages. Pages in category "Small Wind Guidebook Pages" The following 16 pages are in this category, out of 16 total. S Small Wind Guidebook/Can I Connect My System to the Utility Grid Small Wind Guidebook/Can I Go Off-Grid Small Wind Guidebook/First, How Can I Make My Home More Energy Efficient Small Wind Guidebook/For More Information Small Wind Guidebook/Glossary of Terms Small Wind Guidebook/How Do I Choose the Best Site for My Wind Turbine S cont. Small Wind Guidebook/How Much Energy Will My System Generate Small Wind Guidebook/Image Library Small Wind Guidebook/Introduction Small Wind Guidebook/Is There Enough Wind on My Site Small Wind Guidebook/Is Wind Energy Practical for Me

246

Participation of wind power plants in system frequency control: Review of grid code requirements and control methods  

Science Journals Connector (OSTI)

Abstract Active power reserves are needed for the proper operation of an electrical system. These reserves are continuously regulated in order to match the generation and consumption in the system and thus, to maintain a constant electrical frequency. They are usually provided by synchronized conventional generating units such as hydraulic or thermal power plants. With the progressive displacement of these generating plants by non-synchronized renewable-based power plants (e.g. wind and solar) the net level of synchronous power reserves in the system becomes reduced. Therefore, wind power plants are required, according to some European Grid Codes, to also provide power reserves like conventional generating units do. This paper focuses not only on the review of the requirements set by Grid Codes, but also on control methods of wind turbines for their participation in primary frequency control and synthetic inertia.

Francisco Daz-Gonzlez; Melanie Hau; Andreas Sumper; Oriol Gomis-Bellmunt

2014-01-01T23:59:59.000Z

247

PROGRESS OF WIND ENERGY TECHNOLOGY  

E-Print Network [OSTI]

This paper provides an overview of the progress of wind energy technology, along with the current status of wind power worldwide. Over the period of 2000-2012 grid-connected installed wind power has increased by a factor of more than 16. Due to the fast growth in wind market, wind turbine technology has developed different design approaches during this period. In addition to this, issues such as power grid integration, environmental impact, and economics are studied and discussed briefly in this paper, as well.

Bar?? zerdem

248

Operation strategy for a lab-scale grid-connected photovoltaic generation system integrated with battery energy storage  

Science Journals Connector (OSTI)

Abstract The operation strategy for a lab-scale grid-connected photovoltaic generation system integrated with battery energy storage is proposed in this paper. The photovoltaic generation system is composed of a full-bridge inverter, a DCDC boost converter, an isolated bidirectional DCDC converter, a solar cell array and a battery set. Since the battery set acts as an energy buffer to adjust the power generation of the solar cell array, the negative impact on power quality caused by the intermittent and unstable output power from a solar cell array is alleviated, so the penetration rate of the grid-connected photovoltaic generation system is increased. A lab-scale prototype is developed to verify the performance of the system. The experimental results show that it achieves the expected performance.

Hurng-Liahng Jou; Yi-Hao Chang; Jinn-Chang Wu; Kuen-Der Wu

2015-01-01T23:59:59.000Z

249

SciTech Connect: DOE SciDAC's Earth System Grid Center for Enabling...  

Office of Scientific and Technical Information (OSTI)

Energy's (DOE's) Earth System Grid Center for Enabling Technologies (ESG-CET) team has led international development and delivered a production environment for managing and...

250

SciTech Connect: Value of Energy Storage for Grid Applications  

Office of Scientific and Technical Information (OSTI)

for Grid Applications This analysis evaluates several operational benefits of electricity storage, including load-leveling, spinning contingency reserves, and regulation...

251

SciTech Connect: From the Building to the Grid: An Energy Revolution...  

Office of Scientific and Technical Information (OSTI)

SYSTEMS; INTEGRATION; MODELLING; MODELING; DUBLIN; BUILDING; GRID; Energy Analysis; Electricity, Resources, and Buildings Systems Word Cloud More Like This Full Text preview image...

252

Fuzzy logic control of grid connected DFIG system using back-to-back converters  

Science Journals Connector (OSTI)

This paper deals with the power generation control in variable speed wind turbines. In this context, the wind energy conversion system is equipped with a doubly-fed induction generator (DFIG) and two back-to-back...

Abdelhak Dida; Djilani Ben Attous

2014-11-01T23:59:59.000Z

253

Sandia National Laboratories: Grid Integration  

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

of renewable energy technology programs (Wind, Concentrating Solar Power, Geothermal, and Energy Systems Analysis). Transmission Grid Integration Distribution Grid Integration...

254

Orbital evolution of colliding star and pulsar winds in 2D and 3D: dimensionality, resolution, and grid size effects  

E-Print Network [OSTI]

The structure formed by the shocked winds of a massive star and a non-accreting pulsar in a binary system suffers periodic and random variations of orbital and non-linear dynamical origin. The characterization of the evolution of the two-wind interaction region is necessary to understand the non-thermal emission from radio to gamma rays. For the first time, we simulate in 3D the interaction of isotropic stellar and relativistic pulsar winds along one full orbit, on scales well beyond the binary size. We also investigate the impact of grid resolution and size. We carry out, with the code PLUTO, relativistic hydrodynamical simulations in 2 and 3D of the interaction of a slow dense wind and a mildly relativistic wind along one full orbit, up to ~100 times the binary size. The 2-dimensional simulations are carried out with equal and larger grid resolution and size than in 3D. The simulations in 3D confirm previous results in 2D, showing a strong shock induced by Coriolis forces that terminates the pulsar wind in ...

Bosch-Ramon, V; Perucho, M

2014-01-01T23:59:59.000Z

255

Robust STATCOM control for the stabilisation of fixed-speed wind turbines during low voltages  

E-Print Network [OSTI]

and rotor- speed instability and more so if the wind turbine is connected to a weak grid. To prevent is still being produced by squirrel-cage induction generators (SCIGs) which are directly connected to the grid and operate at an almost fixed-speed [3]. They are advantageous as wind generators for their low

Pota, Himanshu Roy

256

Smart Grid | Argonne National Laboratory  

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

Smart Grid Smart Grid Argonne researchers are working to create new, more powerful technology for long-distance transmission of renewable electricity, to balance rural supply and urban demand, and to integrate wind- and solar-generated electricity into the grid. Argonne is moving the smart grid from concept to reality, ensuring that this technology will interact seamlessly with new plug-in and electric cars. The smart grid is a key element in the national plan to lower energy costs for consumers, achieve energy independence and reduce greenhouse gases. The smart grid - an updated, futuristic electric power grid - will employ real-time, two-way communication technologies that allow consumers to connect directly with power suppliers. Customers will be able to choose

257

New York/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

New York/Wind Resources New York/Wind Resources < New York Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> New York Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid?

258

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.

259

Abstract--As a common tendency, large-scale wind farms are increasingly connected to the transmission system of modern  

E-Print Network [OSTI]

stability I. INTRODUCTION arge-scale wind power plants are increasingly integrated into the transmission regulation. For variable-speed wind turbines which are connected to the power system through power electronic convertors, one advantage is that the output active power and reactive power can be controlled separately

Chen, Zhe

260

Impact of Distribution-Connected Large-Scale Wind Turbines on Transmission System Stability during Large Disturbances: Preprint  

SciTech Connect (OSTI)

This work examines the dynamic impacts of distributed utility-scale wind power during contingency events on both the distribution system and the transmission system. It is the first step toward investigating high penetrations of distribution-connected wind power's impact on both distribution and transmission stability.

Zhang, Y.; Allen, A.; Hodge, B. M.

2014-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "grid connected wind" 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

2014-04-30 Public Meeting Agenda: Physical Characterization of Smart and Grid-Connected Commercial and Residential Buildings End-Use Equipment and Appliances  

Broader source: Energy.gov [DOE]

This document is the agenda for the Physical Characterization of Smart and Grid-Connected Commercial and Residential Buildings End-Use Equipment and Appliances public meeting being held on April 30, 2014.

262

SunShot-funded Advanced Inverter Testing Enables 2,500 Solar Energy Systems to Connect to Hawaiis Electric Grid  

Office of Energy Efficiency and Renewable Energy (EERE)

Thanks to a SunShot collaboration at the Energy Departments National Renewable Energy Laboratory (NREL) more than 2,500 Hawaiian Electric customers will connect solar power to the electrical grid...

263

Wind Power Forecasting  

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

Retrospective Reports 2011 Smart Grid Wind Integration Wind Integration Initiatives Wind Power Forecasting Wind Projects Email List Self Supplied Balancing Reserves Dynamic...

264

A fast chiller power demand response control strategy for buildings connected to smart grid  

Science Journals Connector (OSTI)

Abstract With the increasing integration of renewable energies into electrical grids, power imbalance has become one of the most critical issues in grid operations. The end-users at power demand side can actually make use of their demand reduction potentials to contribute to the grid power balance. Conventional demand responses of end-users can provide considerable power demand reductions, but the demand responses are usually subject to significant delay and cannot fulfill the needs of grid real time operation. In this paper, a fast chiller power demand response control strategy for commercial buildings is therefore proposed which facilitates buildings to act as grid operating reserves by providing rapid demand responses to grid request within minutes. However, simply shutting down some essential operating chillers would result in disordered chilled water flow distribution and uneven indoor thermal comfort degradation. This strategy has therefore taken essential measures to solve such problems effectively. Simulation case studies are conducted to investigate the operation dynamics and energy performance of HVAC systems in the demand response events controlled by the strategy. Results show that fast and significant power demand reductions can be achieved without sacrificing the thermal comfort too much.

Xue Xue; Shengwei Wang; Chengchu Yan; Borui Cui

2015-01-01T23:59:59.000Z

265

Massachusetts/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Massachusetts/Wind Resources Massachusetts/Wind Resources < Massachusetts Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Massachusetts Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid?

266

Pennsylvania/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Pennsylvania/Wind Resources Pennsylvania/Wind Resources < Pennsylvania Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Pennsylvania Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid?

267

Washington/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Washington/Wind Resources Washington/Wind Resources < Washington Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Washington Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid?

268

SciTech Connect: "solar plasma wind"  

Office of Scientific and Technical Information (OSTI)

solar plasma wind" Find solar plasma wind" Find How should I search Scitech Connect ... Basic or Advanced? Basic Search Advanced × Advanced Search Options Full Text: Bibliographic Data: Creator / Author: Name Name ORCID Title: Subject: Identifier Numbers: Research Org.: Sponsoring Org.: Site: All Alaska Power Administration, Juneau, Alaska (United States) Albany Research Center (ARC), Albany, OR (United States) Albuquerque Complex - NNSA Albuquerque Operations Office, Albuquerque, NM (United States) Amarillo National Resource Center for Plutonium, Amarillo, TX (United States) Ames Laboratory (AMES), Ames, IA (United States) Argonne National Laboratory (ANL), Argonne, IL (United States) Argonne National Laboratory-Advanced Photon Source (United States) Atlanta Regional Office, Atlanta, GA (United States) Atmospheric Radiation Measurement (ARM)

269

Analysis of off-grid hybrid wind turbine/solar PV water pumping systems  

Science Journals Connector (OSTI)

While many remote water pumping systems exist (e.g. mechanical windmills, solar photovoltaic, wind-electric, diesel powered), few combine both the wind and solar energy resources to possibly improve the reliability and the performance of the system. In this paper, off-grid wind turbine (WT) and solar photovoltaic (PV) array water pumping systems were analyzed individually and combined as a hybrid system. The objectives were to determine: (1) advantages or disadvantages of using a hybrid system over using a WT or a solar PV array alone; (2) if the WT or solar PV array interfered with the output of the other; and (3) which hybrid system was the most efficient for the location. The WT used in the analysis was rated at 900W alternating current (AC). There were three different solar PV arrays analyzed, and they were rated at 320, 480, and 640W direct current (DC). A rectifier converted the 3-phase variable voltage AC output from the WT to DC before combining it with the solar PV array DC output. The combined renewable energies powered a single helical pump. The independent variable used in the hybrid WT/PV array analysis was in units of W/m2. The peak pump efficiency of the hybrid systems at Bushland, TX occurred for the 900W WT combined with the 640W PV array. The peak pump efficiencies at a 75m pumping depth of the hybrid systems were: 47% (WT/320W PV array), 51% (WT/480W PV array), and 55% (WT/640W PV array). Interference occurred between the WT and the different PV arrays (likely due to voltage mismatch between WT and PV array), but the least interference occurred for the WT/320W PV array. This hybrid system pumped 28% more water during the greatest water demand month than the WT and PV systems would have pumped individually. An additional controller with a buck/boost converter is discussed at end of paper for improvement of the hybrid WT/PV array water pumping system.

Brian D. Vick; Byron A. Neal

2012-01-01T23:59:59.000Z

270

Effect of grid size on building wind according to a computation fluid dynamics simulation  

Science Journals Connector (OSTI)

Skyscrapers negatively impact the environment by creating gusty winds, known as building winds, which are the result of descending turbulences ... air by tall buildings. Usually, a building wind impact assessment...

Jae-Cheol Kim; Kyoo-Seock Lee

2011-02-01T23:59:59.000Z

271

Empirical Analysis of the Variability of Wind Generation in India: Implications for Grid Integration  

E-Print Network [OSTI]

wind generation and load data from two states in India,wind generation and load data from two states in India viz.actual wind generation and load data from the Indian states

Phadke, Amol

2014-01-01T23:59:59.000Z

272

Small Wind Guidebook/Is Wind Energy Practical for Me | Open Energy  

Open Energy Info (EERE)

Practical for Me Practical for Me < Small Wind Guidebook Jump to: navigation, search Print PDF WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid? * State Information Portal * Glossary of Terms * For More Information Is Wind Energy Practical for Me?

273

Wind Energy Technology Basics | Department of Energy  

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

Wind Energy Technology Basics Wind Energy Technology Basics Wind Energy Technology Basics August 15, 2013 - 4:10pm Addthis Photo of a hilly field, with six visible wind turbines spinning in the wind. Wind energy technologies use the energy in wind for practical purposes such as generating electricity, charging batteries, pumping water, and grinding grain. Most wind energy technologies can be used as stand-alone applications, connected to a utility power grid, or even combined with a photovoltaic system. For utility-scale sources of wind energy, a large number of turbines are usually built close together to form a wind farm that provides grid power. Several electricity providers use wind farms to supply power to their customers. Stand-alone turbines are typically used for water pumping or

274

Dynamic Analysis of Electrical Power Grid Delivery: Using Prime Mover Engines to Balance Dynamic Wind Turbine Output  

SciTech Connect (OSTI)

This paper presents an investigation into integrated wind + combustion engine high penetration electrical generation systems. Renewable generation systems are now a reality of electrical transmission. Unfortunately, many of these renewable energy supplies are stochastic and highly dynamic. Conversely, the existing national grid has been designed for steady state operation. The research team has developed an algorithm to investigate the feasibility and relative capability of a reciprocating internal combustion engine to directly integrate with wind generation in a tightly coupled Hybrid Energy System. Utilizing the Idaho National Laboratory developed Phoenix Model Integration Platform, the research team has coupled demand data with wind turbine generation data and the Aspen Custom Modeler reciprocating engine electrical generator model to investigate the capability of reciprocating engine electrical generation to balance stochastic renewable energy.

Diana K. Grauer

2011-10-01T23:59:59.000Z

275

Analyzing the Deployment of Large Amounts of Offshore Wind to Design an Offshore Transmission Grid in the United States: Preprint  

SciTech Connect (OSTI)

This paper revisits the results from the U.S. Department of Energy's '20% Wind Energy By 2030' study, which envisioned that 54 GW of offshore wind would be installed by said year. The analysis is conducted using the Regional Energy Deployment System (ReEDS), a capacity expansion model developed by the National Renewable Energy Laboratory. The model is used to optimize the deployment of the 54 GW of wind capacity along the coasts and lakes of the United States. The graphical representation of the results through maps will be used to provide a qualitative description for planning and designing an offshore grid. ReEDS takes into account many factors in the process of siting offshore wind capacity, such as the quality of the resource, capital and O&M costs, interconnection costs, or variability metrics (wind capacity value, forecast error, expected curtailment). The effect of these metrics in the deployment of offshore wind will be analyzed through examples in the results.

Ibanez, E.; Mai, T.; Coles, L.

2012-09-01T23:59:59.000Z

276

Montana/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Page Page Edit History Facebook icon Twitter icon » Montana/Wind Resources < Montana Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Montana Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid?

277

Ohio/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Page Page Edit History Facebook icon Twitter icon » Ohio/Wind Resources < Ohio Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Ohio Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid?

278

Three-Phase Modular Cascaded H-Bridge Multilevel Inverter with Individual MPPT for Grid-Connected Photovoltaic Systems  

SciTech Connect (OSTI)

A three-phase modular cascaded H-bridge multilevel inverter for a grid-connected photovoltaic (PV) system is presented in this paper. To maximize the solar energy extraction of each PV string, an individual maximum power point tracking (MPPT) control scheme is applied, which allows the independent control of each dc-link voltage. PV mismatches may introduce unbalanced power supplied to the three-phase system. To solve this issue, a control scheme with modulation compensation is proposed. The three-phase modular cascaded multilevel inverter prototype has been built. Each H-bridge is connected to a 185 W solar panel. Simulation and experimental results are presented to validate the proposed ideas.

Xiao, Bailu [ORNL; Hang, Lijun [ORNL; Riley, Cameron [University of Tennessee, Knoxville (UTK); Tolbert, Leon M [ORNL; Ozpineci, Burak [ORNL

2013-01-01T23:59:59.000Z

279

Small Wind Guidebook/State Information Portal | Open Energy Information  

Open Energy Info (EERE)

Information Portal Information Portal < Small Wind Guidebook Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid? * State Information Portal

280

Stakeholder Engagement and Outreach: What Is Wind Power?  

Wind Powering America (EERE)

What Is Wind Power? What Is Wind Power? A three-bladed wind turbine with the internal components visible. Six turbines in a row are electrically connected to the power grid. Wind Power Animation This aerial view of a wind turbine plant shows how a group of wind turbines can make electricity for the utility grid. The electricity is sent through transmission and distribution lines to homes, businesses, schools, and so on. View the wind turbine animation to see how a wind turbine works or take a look inside. Wind power or wind energy describes the process by which the wind is used to generate mechanical power or electricity. Wind turbines convert the kinetic energy in the wind into mechanical power. This mechanical power can be used for specific tasks (such as grinding grain or pumping water), or

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


281

Small Wind Guidebook/Glossary of Terms | Open Energy Information  

Open Energy Info (EERE)

Small Wind Guidebook/Glossary of Terms Small Wind Guidebook/Glossary of Terms < Small Wind Guidebook Jump to: navigation, search Print PDF WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid? * State Information Portal * Glossary of Terms * For More Information

282

Novel MIMO Linear Zero Dynamic Controller for the Grid-connected Photovoltaic System with  

E-Print Network [OSTI]

sources, such as sunlight, wind, rain, tides and geothermal heat, are the best choices as alternative sources of energy [1]. All of these renewable sources, solar energy is the most commonly use renewable source in the power system. It is the fastest growing renewable source in the world. The energy report

Pota, Himanshu Roy

283

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

SciTech Connect (OSTI)

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

Piwko, R.; Jordan, G.

2011-11-01T23:59:59.000Z

284

How Do High Levels of Wind and Solar Impact the Grid? The Western Wind and Solar Integration Study  

SciTech Connect (OSTI)

This paper is a brief introduction to the scope of the Western Wind and Solar Integration Study (WWSIS), inputs and scenario development, and the key findings of the study.

Lew, D.; Piwko, D.; Miller, N.; Jordan, G.; Clark, K.; Freeman, L.

2010-12-01T23:59:59.000Z

285

Letter from the Wind Program Director: Fourth Quarter 2013 |...  

Energy Savers [EERE]

A program-funded project at the University of Maine became the first grid connected offshore wind turbine in the United States. The program also launched its newest initiative,...

286

Letter from the Wind Program Director: Fall 2014 | Department...  

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

of funding that will help establish some of the country's first grid-connected offshore wind projects by 2017. These projects, located off the coasts of New Jersey, Oregon,...

287

Characteristics of Wind Turbines Under Normal and Fault Conditions: Preprint  

SciTech Connect (OSTI)

This paper investigates the characteristics of a variable-speed wind turbine connected to a stiff or weak grid under normal and fault conditions and the role of reactive power compensation.

Muljadi, E.; Butterfield, C. P.; Parsons, B.; Ellis, A.

2007-02-01T23:59:59.000Z

288

Wind pumps for irrigating greenhouse crops: Comparison in different socio-economical frameworks  

Science Journals Connector (OSTI)

A simple methodology was used to compare the economic feasibility of wind pump technology, solar photovoltaic pumping, diesel generators, and connection to the electrical grid to provide energy for pumping irrigation water in commercial greenhouses in Spain, Cuba and Pakistan (countries with different developmental backgrounds). The analysis took into account wind resources, distance to the grid, water storage tank volume requirements, and planting dates. Comparisons were made in terms of the levelised cost of energy associated with each system. For all three countries, if a grid connection was already in place, installing wind pumps would be economically unwise. Where no grid connection exists, the distance to the grid and the wind resource available are key factors to be taken into consideration when deciding between options: a 10% increase in the average wind speed is equivalent to a 20% reduction in the distance to the grid in terms of costs return. Finally, the water elevation has a major influence on the economic feasibility of wind pump technology, much more than, for example, on solar photovoltaic pumping technology. The results reveal that, generally, the critical factors to consider when making energy management decisions differ depending between countries. In Spain, the proximity of the electrical grid makes the connection to it the best option. In Pakistan, scarce wind resources are a serious limiting factor. Cuba, however, has good wind resources; water elevation, distance to the grid and water storage needed are the critical factors when determining the economic feasibility of wind pumping there.

Rodrigo Daz-Mndez; Adnan Rasheed; Manuel Peilln; Alicia Perdigones; Ral Snchez; Ana M. Tarquis; Jos L. Garca-Fernndez

2014-01-01T23:59:59.000Z

289

Development of Wind Turbines Prototyping Software Under Matlab/Simulink  

E-Print Network [OSTI]

204 1 Development of Wind Turbines Prototyping Software Under Matlab/Simulink® Through present the development of a wind turbine prototyping software under Matlab/Simulink® through and the end of 1999, around 75% of all new grid-connected wind turbines worldwide were installed in Europe [3

Paris-Sud XI, Université de

290

Small Wind Guidebook/Introduction | Open Energy Information  

Open Energy Info (EERE)

Introduction Introduction < Small Wind Guidebook Jump to: navigation, search Print PDF WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid? * State Information Portal * Glossary of Terms * For More Information Introduction Can I use wind energy to power my home? This question is being asked across

291

April 30 Public Meeting: Physical Characterization of Smart and Grid-Connected Commercial and Residential Building End-Use Equipment and Appliances  

Broader source: Energy.gov [DOE]

These documents contain slide decks presented at the Physical Characterization of Smart and Grid-Connected Commercial and Residential Buildings End-Use Equipment and Appliances public meeting held on April 30, 2014. The first document includes the first presentation from the meeting: DOE Vision and Objectives. The second document includes all other presentations from the meeting: Terminology and Definitions; End-User and Grid Services; Physical Characterization Framework; Value, Benefits & Metrics.

292

Sandia National Laboratories: Transmission Grid Integration  

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

Infrastructure Security, Modeling, Modeling & Analysis, News, News & Events, Renewable Energy, SMART Grid, Systems Analysis, Transmission Grid Integration, Wind Energy Sandia...

293

Battery Management for Grid-Connected PV Systems with a Battery  

E-Print Network [OSTI]

}@usc.edu ABSTRACT Photovoltaic (PV) power generation systems are one of the most promising renewable power sources-connected systems, Photovoltaic power, Electricity bill 1. INTRODUCTION The number and capacity of photovoltaic (PV for customers to save enough money with lower monthly electricity bills to compensate the initial cost

Pedram, Massoud

294

SciTech Connect: Guide to Using the WIND Toolkit Validation Code  

Office of Scientific and Technical Information (OSTI)

Toolkit Validation Code In response to the U.S. Department of Energy's goal of using 20% wind energy by 2030, the Wind Integration National Dataset (WIND) Toolkit was created to...

295

Ny stamstation i Yttermalung fr anslutning av vindkraft; New Substation in Yttermalung to Connect Wind Farms.  

E-Print Network [OSTI]

?? Since 2004, wind power has had the largest installation of new capacity compared to other energy sources in Sweden. Accommodating new wind power may (more)

Wstljung, Martin

2014-01-01T23:59:59.000Z

296

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

297

A novel multi-model neuro-fuzzy-based MPPT for three-phase grid-connected photovoltaic system  

SciTech Connect (OSTI)

This paper presents a novel methodology for Maximum Power Point Tracking (MPPT) of a grid-connected 20 kW photovoltaic (PV) system using neuro-fuzzy network. The proposed method predicts the reference PV voltage guarantying optimal power transfer between the PV generator and the main utility grid. The neuro-fuzzy network is composed of a fuzzy rule-based classifier and three multi-layered feed forwarded Artificial Neural Networks (ANN). Inputs of the network (irradiance and temperature) are classified before they are fed into the appropriated ANN for either training or estimation process while the output is the reference voltage. The main advantage of the proposed methodology, comparing to a conventional single neural network-based approach, is the distinct generalization ability regarding to the nonlinear and dynamic behavior of a PV generator. In fact, the neuro-fuzzy network is a neural network based multi-model machine learning that defines a set of local models emulating the complex and nonlinear behavior of a PV generator under a wide range of operating conditions. Simulation results under several rapid irradiance variations proved that the proposed MPPT method fulfilled the highest efficiency comparing to a conventional single neural network and the Perturb and Observe (P and O) algorithm dispositive. (author)

Chaouachi, Aymen; Kamel, Rashad M.; Nagasaka, Ken [Department of Electronic and Information Engineering, Tokyo University of Agriculture and Technology, Nakamachi (Japan)

2010-12-15T23:59:59.000Z

298

Empirical Analysis of the Variability of Wind Generation in India: Implications for Grid Integration  

E-Print Network [OSTI]

variability. For higher penetration rate (30% by energy),curtailment even at high penetration rates. Moreover, iffor various wind penetration rates in this study establishes

Phadke, Amol

2014-01-01T23:59:59.000Z

299

Brushless Doubly Fed Induction Generator Based Wind Turbine Drivetrain Under Grid Fault Conditions:.  

E-Print Network [OSTI]

??With growing interest in sustainable forms of energy, the wind industry is growing rapidly. The Doubly Fed Induction Generator is the most popular choice for (more)

Shipurkar, U.

2014-01-01T23:59:59.000Z

300

Ten Frequently Asked Questions and Answers About Wind Energy Grid Integration  

Broader source: Energy.gov [DOE]

First presented to the Kansas State Legislature in 2008, these slides present 10 questions and answers regarding basic wind power issues including technology, transmission, and integration.

Note: This page contains sample records for the topic "grid connected wind" 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

A First-Ever Global Examination of Successful Wind Energy Grid Integration Practices  

Broader source: Energy.gov [DOE]

The Department of Energy (DOE) outlined a scenario where wind energy could account for 20% of America's total power generation portfolio by 2030.

302

Design And Development Of Small Wind Energy Systems Is A Soft Path For Power Generation And Environment Conservation For Off Grid Applications In India.  

E-Print Network [OSTI]

ABSTRACT: This paper describes the design a new evolving electrical power generation system with small wind turbine. Which offer solutions to meet local energy requirements of a specific location. Energy conservation decreases energy requirements, promotes energy efficiency and facilitates development of renewable. Wind energy dominates as an immediate viable cost effective option which promotes energy conservation and avoids equivalent utilization of fossil fuels and avoids million ton of green house gas emission causing ozone depletion and other environmental impacts like global warming. This paper gives an over view about the current status and a possible development for small wind turbines for off grid applications in India. KEY WORDS: wind energy, wind power generation system, wind sensor, Energy resources, and wind

unknown authors

303

West Virginia/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

West Virginia/Wind Resources West Virginia/Wind Resources < West Virginia Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> West Virginia Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid?

304

North Dakota/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

North Dakota/Wind Resources North Dakota/Wind Resources < North Dakota Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> North Dakota Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid?

305

South Dakota/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

South Dakota/Wind Resources South Dakota/Wind Resources < South Dakota Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> South Dakota Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid?

306

New Jersey/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

New Jersey/Wind Resources New Jersey/Wind Resources < New Jersey Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> New Jersey Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid?

307

Rhode Island/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

Rhode Island/Wind Resources Rhode Island/Wind Resources < Rhode Island Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> Rhode Island Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid?

308

South Carolina/Wind Resources | Open Energy Information  

Open Energy Info (EERE)

South Carolina/Wind Resources South Carolina/Wind Resources < South Carolina Jump to: navigation, search Print PDF Print Full Version WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home OpenEI Home >> Wind >> Small Wind Guidebook >> South Carolina Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid?

309

Small Wind Guidebook/What are the Basic Parts of a Small Wind Electric  

Open Energy Info (EERE)

Page Page Edit History Facebook icon Twitter icon » Small Wind Guidebook/What are the Basic Parts of a Small Wind Electric System < Small Wind Guidebook Jump to: navigation, search Print PDF WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid?

310

US DRIVE Grid Interaction Technical Team Roadmap | Department...  

Energy Savers [EERE]

More Documents & Publications Grid Interaction Tech Team, and International Smart Grid Collaboration Grid Connectivity Research, Development & Demonstration Projects...

311

Small Wind Guidebook/Image Library | Open Energy Information  

Open Energy Info (EERE)

Image Library Image Library < Small Wind Guidebook Jump to: navigation, search Print PDF WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid? * State Information Portal * Glossary of Terms * For More Information *Capacity-10 kilowatts *Turbine manufacturer-Bergey Windpower Company

312

Research on Cross-subsidy of Wind Farms Integrated and Injecting Power to the Grid  

Science Journals Connector (OSTI)

On the basis of a detailed analysis on power output of wind farms, this paper establishes a quantitative model of cross-subsidy between conventional power plants and wind farms and its identifying indicator through the technique of probabilistic production simulation and then analyzes a calculating instance with data from the IEEE-RTS system to base on. Results demonstrate the reasonability and effectiveness of this model. The work in this paper is helpful to market regulators and operators in accurately identifying the degree of wind farms cross-subsidy in a power system and taking effective measures to ensure the system's security, reliability and economy.

ZHAO Gao-qiang; QI Jian-xun; WANG Bao

2012-01-01T23:59:59.000Z

313

Simulation of Offshore Wind Turbine Link to the Electric Grid through a Four-Level Converter  

Science Journals Connector (OSTI)

This paper is on the modulation of offshore wind energy conversion systems with full-power converter and permanent magnet synchronous generator with an AC link. The drive train considered in this paper is a th...

Mafalda Seixas; Rui Melcio

2014-01-01T23:59:59.000Z

314

Estimating the maximum potential revenue for grid connected electricity storage : arbitrage and regulation.  

SciTech Connect (OSTI)

The valuation of an electricity storage device is based on the expected future cash ow generated by the device. Two potential sources of income for an electricity storage system are energy arbitrage and participation in the frequency regulation market. Energy arbitrage refers to purchasing (stor- ing) energy when electricity prices are low, and selling (discharging) energy when electricity prices are high. Frequency regulation is an ancillary service geared towards maintaining system frequency, and is typically procured by the independent system operator in some type of market. This paper outlines the calculations required to estimate the maximum potential revenue from participating in these two activities. First, a mathematical model is presented for the state of charge as a function of the storage device parameters and the quantities of electricity purchased/sold as well as the quantities o ered into the regulation market. Using this mathematical model, we present a linear programming optimization approach to calculating the maximum potential revenue from an elec- tricity storage device. The calculation of the maximum potential revenue is critical in developing an upper bound on the value of storage, as a benchmark for evaluating potential trading strate- gies, and a tool for capital nance risk assessment. Then, we use historical California Independent System Operator (CAISO) data from 2010-2011 to evaluate the maximum potential revenue from the Tehachapi wind energy storage project, an American Recovery and Reinvestment Act of 2009 (ARRA) energy storage demonstration project. We investigate the maximum potential revenue from two di erent scenarios: arbitrage only and arbitrage combined with the regulation market. Our analysis shows that participation in the regulation market produces four times the revenue compared to arbitrage in the CAISO market using 2010 and 2011 data. Then we evaluate several trading strategies to illustrate how they compare to the maximum potential revenue benchmark. We conclude with a sensitivity analysis with respect to key parameters.

Byrne, Raymond Harry; Silva Monroy, Cesar Augusto.

2012-12-01T23:59:59.000Z

315

Blanc, I., Beloin-Saint-Pierre, D., Payet, J., Jacquin, P., Adra, N., Mayer, D., Espace-PV: key sensitive parameters for environmental impacts of grid-connected PV systems with LCA , In Proceedings of the 23rd  

E-Print Network [OSTI]

sensitive parameters for environmental impacts of grid-connected PV systems with LCA », In Proceedings FOR ENVIRONMENTAL IMPACTS OF GRID-CONNECTED PV SYSTEMS WITH LCA I. BLANC1 , D. BELOIN-SAINT-PIERRE1 , J. PAYET2 , P of sensitive parameters for the life cycle analysis (LCA) of PV system showed that irradiation intensity

Paris-Sud XI, Université de

316

DC Connected Hybrid Offshore-Wind and Tidal Turbine Generation System  

Science Journals Connector (OSTI)

Hybrid Offshore-wind and Tidal Turbine (HOTT) generation system (Rahman and ... interconnecting method for a DC side cluster of wind and tidal turbine generators system are proposed. This method can be achieved...

Mohammad Lutfur Rahman; Yasuyuki Shirai

2010-01-01T23:59:59.000Z

317

Reactive capability limits of wind farms  

Science Journals Connector (OSTI)

Wind Energy Conversion Systems (WECS) technology can be classified into two main types: fixed speed and variable speed. Fixed speed WECS use an induction generator connected directly to the grid while variable speed WECS use a power converter to connect the generator to the grid. Fixed speed WECS require shunt capacitors for reactive power compensation, while variable speed WECS have reactive power capability. Under the Spanish grid code, wind farms have to operate in a range of power factor values. This paper determines the reactive power capability of wind farms equipped with both fixed and variable speed WECS. The reactive power capability can be represented as a reactive capability curve. In this paper, the reactive capability curve is used to calculate the additional reactive power compensation needed to meet the requirements of the Spanish grid code.

Alberto Rios Villacorta; Santiago Arnaltes Gomez; Jose Luis Rodriguez-Amenedo

2005-01-01T23:59:59.000Z

318

Abstract--In this paper, we present the voltage build up process and the terminal voltage control of an isolated wind  

E-Print Network [OSTI]

of an isolated wind powered induction generator driven by a variable speed wind turbine using rotor flux oriented, but they can be set to operate within a given variation of speed. Unlike a grid connected induction generator effect. Wind powered isolated induction generators have an input, wind, that is not controllable

Paris-Sud XI, Université de

319

Modelling and design of an eddy current coupling for slip-synchronous permanent magnet wind generators.  

E-Print Network [OSTI]

??ENGLISH ABSTRACT: Slip-synchronous permanent magnet generators (SS-PMG) is a recently proposed direct-grid connected direct-drive generator topology for wind power applications. It combines a permanent magnet (more)

Mouton, Zac

2013-01-01T23:59:59.000Z

320

NREL: Transmission Grid Integration - Grid Simulation  

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

Grid Simulation Grid Simulation NREL's controllable grid interface test system can reduce certification testing time and costs while providing system engineers with a better understanding of how wind turbines react to disturbances on the electric power system. To understand the behavior of wind turbines during grid disturbances, manufacturers and utility grid operators perform a series of tests and transient simulation studies. Utility operators need to estimate how much power wind turbines can provide to help regulate grid frequency. And after design modifications are made to control software, manufacturers may need to retest their turbines. But testing wind turbines in the field can be a lengthy and expensive process. NREL developed the controllable grid interface test system to reduce the

Note: This page contains sample records for the topic "grid connected wind" 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

Individual Pitch Control for Mitigation of Power Fluctuation of Variable Speed Wind Turbines  

E-Print Network [OSTI]

Individual Pitch Control for Mitigation of Power Fluctuation of Variable Speed Wind Turbines, China mcheng@seu.edu.cn Abstract-- Grid connected wind turbines are the sources of power fluctuations presents an individual pitch control (IPC) strategy to mitigate the wind turbine power fluctuation at both

Hu, Weihao

322

Wind Power Electricity: The Bigger the Turbine, The Greener the Electricity?  

Science Journals Connector (OSTI)

In life cycle assessment, scaling and progress rates are seldom applied to estimate the environmental impacts of wind energy. ... However, the environmental impact of wind energy is still a matter of controversy. ... This study proves that wind energy should become one of the best ways to mitigate climate change and to provide electricity in rural zones not connected to the grid. ...

Marloes Caduff; Mark A. J. Huijbregts; Hans-Joerg Althaus; Annette Koehler; Stefanie Hellweg

2012-04-04T23:59:59.000Z

323

A simple mathematical description of an off-grid hybrid solarwind power generating system  

Science Journals Connector (OSTI)

We give a detailed description of the energy balance equation for a stand-alone hybrid solarwind power generating system. The dimensions of the power generator and the energy capacity of a buffer battery (used as an energy storage system) are chosen to suit a known consumer's profile. Future applications of the mathematical model developed and analogies with a similar hydrodynamic problem are discussed.

M Blasone; F Dell'Anno; R De Luca; G Torre

2013-01-01T23:59:59.000Z

324

NREL: Wind Research - Research and Development  

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

Printable Version Wind Research Home Research & Development Utility-Scale Wind Turbines Offshore Wind Turbines Small Wind Turbines Grid Integration Market Acceleration...

325

Voltage and Frequency Control in Offshore Wind Turbines Connected to Isolated Oil Platform Power Systems  

Science Journals Connector (OSTI)

Offshore wind turbines have potential to supply offshore oil and gas platforms in the North Sea with electric energy. For remote located facilities it is attractive to pursue a solution where the wind turbines and oil platform operate in an isolated system. To study the operational properties of a system with these characteristics is necessary to identify possible advantages and disadvantages. This paper demonstrates how added voltage and frequency control in wind turbines equipped with full power electronic converters can improve the voltage and frequency stability in offshore oil and gas installations. The work is based on an electrical simulation model built in the PSCAD software. In the proposed transient simulation scenarios, the voltage dip is reduced from 16% to 6%, while the frequency overshoot is reduced from 97% to 25%. These are significant improvements that should be taken into consideration when offshore wind power is evaluated as power supply to oil installations.

Atle Rygg rdal; Tore Undeland; Kamran Sharifabadi

2012-01-01T23:59:59.000Z

326

Error compensation in distance relays caused by wind power plants in the power grid  

Science Journals Connector (OSTI)

Abstract This article presents the Prony method as a filtering technique for distance relays. First, the effect of non-filtered frequency components generated by wind power plants in distance relays is evaluated in a simplified model of a doubly fed induction generator, resulting in an error of apparent impedance measurement. Then, the effects of non-filtered frequency components for typical distance relay are presented. The error in apparent impedance measurement is evaluated in reach and operation time of the relay; a distorted characteristic of the mho distance relay is shown in the impedance plane. Finally, Prony method as a filtering technique is implemented as a solution of the apparent impedance measurement error, and the simulated case and a real fault event are evaluated to validate the proposed distance relay algorithm. Thus the asynchronous frequency components of voltage and current signals are identified and filtered, as a result the performance of the distance relay is enhanced.

L.A. Trujillo Guajardo; A. Conde Enrquez; Z. Leonowicz

2014-01-01T23:59:59.000Z

327

Small Wind Guidebook/First, How Can I Make My Home More Energy Efficient |  

Open Energy Info (EERE)

First, How Can I Make My Home More Energy Efficient First, How Can I Make My Home More Energy Efficient < Small Wind Guidebook Jump to: navigation, search Print PDF WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid? * State Information Portal * Glossary of Terms * For More Information

328

Small Wind Guidebook/How Much Energy Will My System Generate | Open Energy  

Open Energy Info (EERE)

How Much Energy Will My System Generate How Much Energy Will My System Generate < Small Wind Guidebook Jump to: navigation, search Print PDF WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid? * State Information Portal * Glossary of Terms * For More Information

329

Small Wind Guidebook/Where Can I Find Installation and Maintenance Support  

Open Energy Info (EERE)

Where Can I Find Installation and Maintenance Support Where Can I Find Installation and Maintenance Support < Small Wind Guidebook Jump to: navigation, search Print PDF WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid? * State Information Portal * Glossary of Terms * For More Information

330

A Generalized Class of Stationary Frame-Current Controllers for Grid-Connected ACDC Converters  

E-Print Network [OSTI]

Within power systems, high-power pulsewidth-modulated ac-dc converters are used in flexible ac transmission systems controllers and for interfacing renewable energy sources to the grid. These converters traditionally ...

Hwang, J. George

331

Energy dispatch schedule optimization and cost benefit analysis for grid-connected, photovoltaic-battery storage systems  

E-Print Network [OSTI]

the on-peak and off-peak energy markets. Price arbitrage isin the time-of-use energy market, but its success as aEnergy Storage for the Electricity Grid: Benefits and Market

Nottrott, A.; Kleissl, J.; Washom, B.

2013-01-01T23:59:59.000Z

332

Impact of Increasing Distributed Wind Power and Wind Turbine Siting on Rural Distribution Feeder Voltage Profiles: Preprint  

SciTech Connect (OSTI)

Many favorable wind energy resources in North America are located in remote locations without direct access to the transmission grid. Building transmission lines to connect remotely-located wind power plants to large load centers has become a barrier to increasing wind power penetration in North America. By connecting utility-sized megawatt-scale wind turbines to the distribution system, wind power supplied to consumers could be increased greatly. However, the impact of including megawatt-scale wind turbines on distribution feeders needs to be studied. The work presented here examined the impact that siting and power output of megawatt-scale wind turbines have on distribution feeder voltage. This is the start of work to present a general guide to megawatt-scale wind turbine impact on the distribution feeder and finding the amount of wind power that can be added without adversely impacting the distribution feeder operation, reliability, and power quality.

Allen, A.; Zhang, Y. C.; Hodge, B. M.

2013-09-01T23:59:59.000Z

333

Simulation of a flexible wind turbine response to a grid fault Anca D. Hansen*, Nicolaos A. Cutululis*, Poul Srensen*,  

E-Print Network [OSTI]

similar to that of conventional power plants. Especially the requirements for wind turbines to stay possible new directions in the certification process of future power plant wind turbines, namely wind industries nowadays. The increased penetration of wind energy into the power system over the last years

334

NREL: Wind Research - SWIFT Wind Turbine Testing and Results  

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

SWIFT Wind Turbine Testing and Results SWIFT Wind Turbine Testing and Results The SWIFT wind turbine. Text Version As part of the National Renewable Energy Laboratory and U.S. Department of Energy (NREL/DOE) Independent Testing project, NREL is testing the SWIFT small wind turbine at the National Wind Technology Center (NWTC). The competitive grant was awarded to Cascade Engineering. The SWIFT is a 1-kilowatt (kW), five-bladed with outer ring, horizontal-axis upwind small wind turbine. The turbine's rotor diameter is 2 meters, and its hub height is 13.72 meters. The SWIFT uses a single-phase permanent-magnet generator rated at 1 kW grid connected through an inverter at 240 volts AC. Testing Summary Supporting data and explanations for data provided in this table will be provided in the final reports. Data presented are preliminary and subject

335

Transdisciplinary electric power grid science  

Science Journals Connector (OSTI)

Transdisciplinary electric power grid science 10.1073/pnas.1309151110...Connections among regions of a power grid spread risk, like in other infrastructures...Tradeoffs of Model Complexity Power grid modeling is not merely an academic...

Charles D. Brummitt; Paul D. H. Hines; Ian Dobson; Cristopher Moore; Raissa M. D'Souza

2013-01-01T23:59:59.000Z

336

Short-Circuit Characteristics of Asynchronous Generators and Double-Fed Induction Generators Inter-connected Grid  

Science Journals Connector (OSTI)

In this paper, the electrical transient mode of induction generators is studied, establishing the short-circuit current sequence component of wind generators are when faulty occuring in collect feeder, ... type, ...

Su Chang-Sheng; Li Feng-Ting; Liu Wei

2011-01-01T23:59:59.000Z

337

Dependability of Wind Energy Generators with Short-Term Energy Storage  

Science Journals Connector (OSTI)

...system connected into a common grid. This leads to a maximum possible...power plant. With the present grid size, this means that wind...storage systems are batteries, flywheels, pumped water, compressed...probably being associated with a flywheel system. In Fig. 1, power...

BENT SRENSEN

1976-11-26T23:59:59.000Z

338

Forecast of Regional Power Output of Wind Turbines Hans Georg Beyer, Detlev Heinemann, Harald Mellinghoff, Kai Monnich, Hans-Peter Waldl  

E-Print Network [OSTI]

Forecast of Regional Power Output of Wind Turbines Hans Georg Beyer, Detlev Heinemann, Harald of wind turbines connected to the public electricity grid will be intro- duced. Using this procedure and Northern Germany. At the moment, the installed capacity of wind turbines is in the order of magnitude

Heinemann, Detlev

339

THREE-DIMENSIONAL SOLAR WIND MODELING FROM THE SUN TO EARTH BY A SIP-CESE MHD MODEL WITH A SIX-COMPONENT GRID  

SciTech Connect (OSTI)

The objective of this paper is to explore the application of a six-component overset grid to solar wind simulation with a three-dimensional (3D) Solar-InterPlanetary Conservation Element/Solution Element MHD model. The essential focus of our numerical model is devoted to dealing with: (1) the singularity and mesh convergence near the poles via the use of the six-component grid system, (2) the {nabla} {center_dot} B constraint error via an easy-to-use cleaning procedure by a fast multigrid Poisson solver, (3) the Courant-Friedrichs-Levy number disparity via the Courant-number insensitive method, (4) the time integration by multiple time stepping, and (5) the time-dependent boundary condition at the subsonic region by limiting the mass flux escaping through the solar surface. In order to produce fast and slow plasma streams of the solar wind, we include the volumetric heating source terms and momentum addition by involving the topological effect of the magnetic field expansion factor f{sub S} and the minimum angular distance {theta}{sub b} (at the photosphere) between an open field foot point and its nearest coronal hole boundary. These considerations can help us easily code the existing program, conveniently carry out the parallel implementation, efficiently shorten the computation time, greatly enhance the accuracy of the numerical solution, and reasonably produce the structured solar wind. The numerical study for the 3D steady-state background solar wind during Carrington rotation 1911 from the Sun to Earth is chosen to show the above-mentioned merits. Our numerical results have demonstrated overall good agreements in the solar corona with the Large Angle and Spectrometric Coronagraph on board the Solar and Heliospheric Observatory satellite and at 1 AU with WIND observations.

Feng Xueshang; Yang Liping; Xiang Changqing; Zhou Yufen; Zhong Dingkun [SIGMA Weather Group, State Key Laboratory for Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190 (China); Wu, S. T., E-mail: fengx@spaceweather.ac.c [Center for Space Plasma and Aeronomic Research, University of Alabama in Huntsville, Huntsville, AL 35899 (United States)

2010-11-01T23:59:59.000Z

340

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

Note: This page contains sample records for the topic "grid connected wind" 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

National Wind Technology Center Dynamic 5-Megawatt Dynamometer  

ScienceCinema (OSTI)

The National Wind Technology Center (NWTC) offers wind industry engineers a unique opportunity to conduct a wide range of tests. Its custom-designed dynamometers can test wind turbine systems from 1 kilowatt (kW) to 5 megawatts (MW). The NWTC's new dynamometer facility simulates operating field conditions to assess the reliability and performance of wind turbine prototypes and commercial machines, thereby reducing deployment time, failures, and maintenance or replacement costs. Funded by the U.S. Department of Energy with American Recovery and Reinvestment Act (ARRA) funds, the 5-MW dynamometer will provide the ability to test wind turbine drivetrains and connect those drivetrains directly to the electricity grid or through a controllable grid interface (CGI). The CGI tests the low-voltage ride-through capability of a drivetrain as well as its response to faults and other abnormal grid conditions.

Felker, Fort

2014-06-10T23:59:59.000Z

342

Study of STATCOM on Reactive Power Compensation Strategy of Wind Farm  

Science Journals Connector (OSTI)

For voltage stability problems caused by grid-connected wind farms, a strategy of coordinated reactive power compensation is proposed in this paper. The strategy utilizes static synchronous compensator (STATCOM) and doubly-fed induction generator (DFIG) ... Keywords: Reactive Power Compensation Strategy, STATCOM, DFIG, Wind Farm

Hui Li; Shucai Li; Hao Zhang; Weihua Bao

2013-12-01T23:59:59.000Z

343

Distributed Wind Energy in Idaho  

SciTech Connect (OSTI)

Project Objective: This project is a research and development program aimed at furthering distributed wind technology. In particular, this project addresses some of the barriers to distributed wind energy utilization in Idaho. Background: At its core, the technological challenge inherent in Wind Energy is the transformation of a highly variable form of energy to one which is compatible with the commercial power grid or another useful application. A major economic barrier to the success of distributed wind technology is the relatively high capital investment (and related long payback periods) associated with wind turbines. This project will carry out fundamental research and technology development to address both the technological and economic barriers. â?¢ Active drive train control holds the potential to improve the overall efficiency of a turbine system by allowing variable speed turbine operation while ensuring a tight control of generator shaft speed, thus greatly simplifying power conditioning. â?¢ Recent blade aerodynamic advancements have been focused on large, utility-scale wind turbine generators (WTGs) as opposed to smaller WTGs designed for distributed generation. Because of Reynolds Number considerations, blade designs do not scale well. Blades which are aerodynamically optimized for distributed-scale WTGs can potentially reduce the cost of electricity by increasing shaft-torque in a given wind speed. â?¢ Grid-connected electric generators typically operate at a fixed speed. If a generator were able to economically operate at multiple speeds, it could potentially convert more of the windâ??s energy to electricity, thus reducing the cost of electricity. This research directly supports the stated goal of the Wind and Hydropower Technologies Program for Distributed Wind Energy Technology: By 2007, reduce the cost of electricity from distributed wind systems to 10 to 15 cents/kWh in Class 3 wind resources, the same level that is currently achievable in Class 5 winds.

Gardner, John; Ferguson, James; Ahmed-Zaid, Said; Johnson, Kathryn; Haynes, Todd; Bennett, Keith

2009-01-31T23:59:59.000Z

344

The Great Plains Wind Power Test Facility  

SciTech Connect (OSTI)

This multi-year, multi-faceted project was focused on the continued development of a nationally-recognized facility for the testing, characterization, and improvement of grid-connected wind turbines, integrated wind-water desalination systems, and related educational and outreach topics. The project involved numerous faculty and graduate students from various engineering departments, as well as others from the departments of Geosciences (in particular the Atmospheric Science Group) and Economics. It was organized through the National Wind Institute (NWI), which serves as an intellectual hub for interdisciplinary and transdisciplinary research, commercialization and education related to wind science, wind energy, wind engineering and wind hazard mitigation at Texas Tech University (TTU). Largely executed by an academic based team, the project resulted in approximately 38 peer-reviewed publications, 99 conference presentations, the development/expansion of several experimental facilities, and two provisional patents.

Schroeder, John

2014-01-31T23:59:59.000Z

345

A Guidebook on Grid Interconnection and Islanded Operation of Mini-Grid Power Systems Up to 200 kW  

E-Print Network [OSTI]

is connected to a power grid, the frequency is regulated bywith regional or national power grids calls for standardizedisland to the mainland power grid. The solar systems, which

Greacen, Chris

2014-01-01T23:59:59.000Z

346

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

347

The Global Grid  

Science Journals Connector (OSTI)

This paper puts forward the vision that a natural future stage of the electricity network could be a grid spanning the whole planet and connecting most of the large power plants in the world: this is the Global Grid. The main driving force behind the Global Grid will be the harvesting of remote renewable sources, and its key infrastructure element will be the high capacity long transmission lines. Wind farms and solar power plants will supply load centers with green power over long distances. This paper focuses on the introduction of the concept, showing that a globally interconnected network can be technologically feasible and economically competitive. We further highlight the multiple opportunities emerging from a global electricity network such as smoothing the renewable energy supply and electricity demand, reducing the need for bulk storage, and reducing the volatility of the energy prices. We also discuss possible investment mechanisms and operating schemes. Among others, we envision in such a system a global power market and the establishment of two new coordinating bodies, the Global Regulator and the Global System Operator.

Spyros Chatzivasileiadis; Damien Ernst; Gran Andersson

2013-01-01T23:59:59.000Z

348

Copyright notice: this is the self-archived version of an article accepted for publication in Wind Energy, September 2013. The copyright now belongs to John Wiley & Sons, Ltd. DOI: 10.1002/we.1680  

E-Print Network [OSTI]

: http://onlinelibrary.wiley.com/doi/1 .1 2/we.168 /abstract Energy storage sizing for wind power: impact, an energy storage system connected to the wind farm is considered. One statistical characteristic of day. The stochastic nature of wind power production is a source of uncertainty in the grid energy balance which has

Boyer, Edmond

349

Proceedings Nordic Wind Power Conference  

E-Print Network [OSTI]

Estimation of Possible Power for Wind Plant Control Power Fluctuations from Offshore Wind Farms; Model Validation System grounding of wind farm medium voltage cable grids Faults in the Collection Grid of Offshore systems of wind turbines and wind farms. NWPC presents the newest research results related to technical

350

Control of a DFIG-based wind energy conversion system operating under harmonically distorted unbalanced grid voltage along with nonsinusoidal rotor injection conditions  

Science Journals Connector (OSTI)

Abstract In this study, novel hybrid proportional-integral-harmonic resonant (PI-R) controllers implemented in the both (dq)+ and rotor (?r?r) reference frames are presented to control a doubly fed induction generator (DFIG)-based wind power generation system operating simultaneously under the three conditions which are nonsinusoidal rotor voltage injection, harmonically distorted grid voltage, and unbalanced grid voltage. The contribution of this work is to present a novel control scheme implemented in the both (dq)+ and rotor (?r?r) reference frames by considering all the three mentioned conditions (no one or two of them). It will be shown that the proposed control scheme keeps the DFIG in an acceptable operation margin and furthermore, it eliminates all harmonics and pulsations components from the stator and the rotor circuits when the DFIG operates under harmonically distorted unbalanced grid voltage along with quasi-sine rotor injection conditions. The proposed control scheme is simulated in MATLAB/Simulink and simulated results are presented to validate the theoretical results. Although this work is carried out under the three mentioned conditions and other related works have been reported under only one condition, comparison between the results of this work and other works is performed to prove the excellent performances of the proposed control scheme.

Hassan Fathabadi

2014-01-01T23:59:59.000Z

351

Renewable Hydrogen From Wind in California  

E-Print Network [OSTI]

realities of using wind power to produce hydrogen on a largethat would achieve 70% wind power to 30% grid natural gasusing grid power to supplement the wind power if necessary.

Bartholomy, Obadiah

2005-01-01T23:59:59.000Z

352

NREL: Wind Research - News Release Archives  

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

8 8 December 9, 2008 Extra-High-Voltage Line from AEP Would Connect Wind-Rich Dakotas American Electric Power is evaluating the feasibility of building a multi-state, extra-high-voltage transmission project across the Upper Midwest. December 9, 2008 Colorado Study Confirms Low Grid Integration Costs for Wind A new study released this week once again adds to the body of peer-reviewed literature confirming that the cost of integrating wind energy with the electric grid is quite low. December 2, 2008 Spanish Wind Power Hits Record 43% of Demand Renewable energy has boomed in recent years in Spain, as the country tries to cut greenhouse gas emissions and reduce its heavy dependence on fuel imports. Spain is also saving large sums of money in the process. November 11, 2008

353

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

SciTech Connect (OSTI)

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

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

2010-07-15T23:59:59.000Z

354

Installing and Maintaining a Small Wind Electric System | Department of  

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

Installing and Maintaining a Small Wind Electric System Installing and Maintaining a Small Wind Electric System Installing and Maintaining a Small Wind Electric System July 2, 2012 - 8:22pm Addthis Installing and Maintaining a Small Wind Electric System What does this mean for me? When installing a wind system, the location of the system, the energy budget for the site, the size of the system, and the height of the tower are important elements to consider. Deciding whether to connect the system to the electric grid or not is also an important decision. If you went through the planning steps to evaluate whether a small wind electric system will work at your location, you will already have a general idea about: The amount of wind at your site The zoning requirements and covenants in your area The economics, payback, and incentives of installing a wind system

355

2.10 - Electrical Parts of Wind Turbines  

Science Journals Connector (OSTI)

Abstract This section presents the electrical subsystem of a wind turbine. Specifically, the power control, the generator, the power electronics, the grid connection, and the lightning protection modules are discussed. Though the content is targeted to present-day megawatt turbine, small machines are shortly presented. A list of the most important manufacturers in the field is also included. Finally, future outlook is described.

G.S. Stavrakakis

2012-01-01T23:59:59.000Z

356

Energy Department Announces Innovative Offshore Wind Energy Projects  

Office of Energy Efficiency and Renewable Energy (EERE)

As a part of the Administrations all-of-the-above energy strategy, the Energy Department today announced the selection of three pioneering offshore wind demonstrations to receive up to $47 million each over the next four years to deploy innovative, grid-connected systems in federal and state waters by 2017.

357

Electric power from offshore wind via synoptic-scale interconnection  

Science Journals Connector (OSTI)

...from the Atlantic Transmission Grid year-by-year...in the prior wind transmission analysis reviewed...a 5.6% forced outage rate (5). In...in the National Data Buoy Center data...level pressure with lines for hPa, and 10-m...are connected by transmission. The two gray date...

Willett Kempton; Felipe M. Pimenta; Dana E. Veron; Brian A. Colle

2010-01-01T23:59:59.000Z

358

Optimization of Electric Power Systems for Off-Grid Domestic Applications: An Argument for Wind/Photovoltaic Hybrids  

SciTech Connect (OSTI)

The purpose of this research was to determine the optimal configuration of home power systems relevant to different regions in the United States. The hypothesis was that, regardless of region, the optimal system would be a hybrid incorporating wind technology, versus a photovoltaic hybrid system without the use of wind technology. The method used in this research was HOMER, the Hybrid Optimization Model for Electric Renewables. HOMER is a computer program that optimizes electrical configurations under user-defined circumstances. According to HOMER, the optimal system for the four regions studied (Kansas, Massachusetts, Oregon, and Arizona) was a hybrid incorporating wind technology. The cost differences between these regions, however, were dependent upon regional renewable resources. Future studies will be necessary, as it is difficult to estimate meteorological impacts for other regions.

Jennings, W.; Green, J.

2001-01-01T23:59:59.000Z

359

User`s guide for PLTWIND Version 1.0: PC-based software for generating plots of monitored wind data and gridded wind fields for Hanford emergency response applications  

SciTech Connect (OSTI)

This document is a user`s guide for the PLoT Near-Surface WIND (PLTWIND) modeling system. PLTWIND is a personal-computer-based software product designed to produce graphical displays of Hanford wind observations and model-generated wind fields. The real-time wind data processed by PLTWIND are acquired from the mainframe computer system at the Hanford Meteorology Station and copied to PLTWIND systems by the Hanford Local Area Network (HLAN). PLTWIND is designed fbr operation on an IBM-compatible PC with a connection to the HLAN. An HP-compatible pen plotter or laser printer (with a minimum of 1.5 megabytes of memory and a Plotter-in-a-Cartridge hardware) is required to generate hardcopies of PLTWTND`s graphical products. PLTWM`s products are intended for use by emergency response personnel in evaluating atmospheric dispersion characteristics in the near-surface environment. Model products provide important atmospheric information to hazard evaluators; however, these products are only tools for assessing near-surface atmospheric transport and should not be interrupted as providing definitive representation of atmospheric conditions.

Glantz, C.S.; Burk, K.W.

1995-09-01T23:59:59.000Z

360

Basis for the US Modern Grid Strategy - A Changing World  

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

Metering Infrastructure, distributed generation, wind turbine farms, and a few Demand Response programs. Value of the Electricity Grid The electric grid plays an important part...

Note: This page contains sample records for the topic "grid connected wind" 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

Abstract--This paper deals with the design of a nonlinear con-troller for single-phase grid-connected photovoltaic (PV) systems  

E-Print Network [OSTI]

, and feed-in tariff [1], [2]. The major concerns of integrating PV into the grid are stochastic behaviors

Pota, Himanshu Roy

362

Novel Control of PV Solar and Wind Farm Inverters as STATCOM for Increasing Connectivity of Distributed Generators.  

E-Print Network [OSTI]

??The integration of distributed generators (DGs) such as wind farms and PV solar farms in distribution networks is getting severely constrained due to problems of (more)

AC, Mahendra

2013-01-01T23:59:59.000Z

363

2011 Wind Technologies Market Report  

E-Print Network [OSTI]

the contribution of wind power to electricity consumption,GW per year needed for wind power to contribute 20% of thegrid; such wind turbines can also provide power to off-grid

Bolinger, Mark

2013-01-01T23:59:59.000Z

364

2012 Wind Technologies Market Report  

E-Print Network [OSTI]

the contribution of wind power to electricity consumption,16 GW/year needed for wind power to contribute 20% of thegrid; such wind turbines can also provide power to off-grid

Wiser, Ryan

2014-01-01T23:59:59.000Z

365

2009 Wind Technologies Market Report  

E-Print Network [OSTI]

the contribution of wind power to electricity consumption,per year pace needed for wind power to contribute 20% of thegrid; such wind turbines can also provide power to off-grid

Wiser, Ryan

2010-01-01T23:59:59.000Z

366

A Guidebook on Grid Interconnection and Islanded Operation of Mini-Grid Power Systems Up to 200 kW  

E-Print Network [OSTI]

grid connection of PV hybrid mini-grids. IEA PVPS Task 11,Program (ESMAP), Mini-Grid Design Manual, Technical Paperhttp://www.riaed.net/IMG/pdf/Mini- Grid_Design_Manual-2.pdf

Greacen, Chris

2014-01-01T23:59:59.000Z

367

Sandia National Laboratories: Wind Generator Modeling  

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

& Events, Renewable Energy, SMART Grid, Systems Analysis, Transmission Grid Integration, Wind Energy This modular block diagram represents the major components of the generic...

368

Optimal green energy management in Jeju, South Korea On-grid and off-grid electrification  

Science Journals Connector (OSTI)

Abstract Green Growth and Sustainability are now keywords for industrial growth engines. This research examines the economic, environmental, and technological feasibility of hybrid systems by simulating a system composed of renewable energy, an existing grid system, and a diesel generator on Jeju Island in South Korea. Korea depends heavily on oil imports. Thus, in Korea, efficient energy management is imperative. For this reason, the current Korean administration is striving to improve its energy infrastructure with the construction of stable energy supplies and reliable systems the implementation of energy policies, such as smart grids, and the diffusion of renewable energy generation sources. This study finds that the most economically feasible hybrid system is a grid-connected wind turbinephotovoltaicbatteryconverter hybrid system. Given the economic feasibility of this hybrid system, implementing it would decrease the price of electricity in Jeju. Both the implications and limitations of this study will be discussed in the last section of this paper.

Heetae Kim; Seoin Baek; Eunil Park; Hyun Joon Chang

2014-01-01T23:59:59.000Z

369

Connecting the world's electrical grids  

SciTech Connect (OSTI)

This article examines the technology available for transmission of bulk power over long distances for global energy networks. The topics of the article include former Soviet Union technology in HVAC systems, Brazil's HVDC link, Italy's multiterminal HVDC systems, the Quebec to New England multiterminal HVDC link, improvements in thyristors for more controllable AC systems using thyristor controlled series compensators, and continued thyristor development.

Valenti, M.

1994-01-01T23:59:59.000Z

370

How Do Wind Turbines Work?  

Broader source: Energy.gov [DOE]

Instead of using electricity to make wind, like a fan, wind turbines use wind to make electricity. The wind turns the blades, which spin a shaft, which connects to a generator and makes electricity.

371

Sustainable energy future via grid interactive operation of spv system at isolated remote island  

Science Journals Connector (OSTI)

This paper has analyzed the case of Moushuni Island at Sundarban of 24 Parganas South of West Bengal, India. The proposition is to find out the possibility of grid-connectivity of Isolated Remote Island which is under rural electrification scheme by hybrid renewable energies under Jawaharlal Nehru National Solar Mission of India. In these rural electrification program, grid extension can be the best option if the grid is reliable, the rural community rather big and in proximity to the grid. In many circumstances, a strong case for mini-grids based on hybrid systems can be made. Scattered communities and isolated houses are well served by solar and small hydro (where available) or small wind energy systems. By feeding renewable electricity to the utility grid through the grid-connected hybrid renewable energy system, during time of peak demand, sufficient electrical loads can be shed to prevent turning on a coal or natural gas-fired plant and therefore save CO2 emissions and potentially energy import costs, replacing fossil fuels. The Social, Economic, and Environmental Benefits can be achieved through this proposition. Also, the Grid Interactive Operation of SPV System at Moushuni Island is tested. Malda district of West Bengal, India is a vision towards smart-grid city towards sustainable future, where rural consumers can upgrade their quality of life through solar energy resource.

Aurobi Das; V. Balakrishnan

2012-01-01T23:59:59.000Z

372

Kickoff of Offshore Wind Power in China: Playoffs for China Wind Power Development  

Science Journals Connector (OSTI)

Year 2010 is the significant year of offshore wind power development in China. The first national offshore wind power project is connected to the grid, and the first round of concession projects marks the strong support from central government. It is foreseeable that offshore wind power capacity in China will expand rapidly in the future, and the understanding pattern of it is crucial for analyzing the overall wind market in China and global offshore wind power development. This paper firstly provides an overview of global offshore wind power development, then in China, including historical installation, potential of resources, demonstration and concession projects, and target of development. Based on this, analysis on current policies related to offshore wind power and their implementation, current wind farm developers and turbine manufacturers of China's offshore wind industry is done. All the previous analysis generates complete evaluation of current status and some issues and trends of China offshore wind power development, based on which some policy recommendations for sustainable development of offshore wind power are made.

Zhang Xiliang; Zhang Da; Michele Stua

2012-01-01T23:59:59.000Z

373

Network Connections  

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

Connecting to NERSC Using X Windows Connecting to NERSC with NX Transferring Data Network Performance Queues and Scheduling Job Logs & Analytics Training & Tutorials Software Accounts & Allocations Policies Data Analytics & Visualization Data Management Policies Science Gateways User Surveys NERSC Users Group User Announcements Help Operations for: Passwords & Off-Hours Status 1-800-66-NERSC, option 1 or 510-486-6821 Account Support https://nim.nersc.gov accounts@nersc.gov 1-800-66-NERSC, option 2 or 510-486-8612 Consulting http://help.nersc.gov consult@nersc.gov 1-800-66-NERSC, option 3 or 510-486-8611 Home » For Users » Network Connections Network Connections NERSC's resources can be accessed using SSH and related tools, grid tools, and via the web. This section explains how to connect to NERSC

374

The Cost of Transmission for Wind Energy in the United States: A Review of Transmission Planning Studies.  

E-Print Network [OSTI]

Grid. 2006. Trans mission and Wind Energy: Capturing theour sample. 20% Wind Energy: Wind Deployment System (WinDS)and Renewable Energy (Wind & Hydropower Technologies

Wiser, Ryan

2014-01-01T23:59:59.000Z

375

Solar and Wind Powering Wyoming Home | Department of Energy  

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

Solar and Wind Powering Wyoming Home Solar and Wind Powering Wyoming Home Solar and Wind Powering Wyoming Home March 17, 2010 - 4:41pm Addthis Solar panels at Terry Sandstrom's home in Wheatland, Wyo. | Photo courtesy of Terry Sandstrom Solar panels at Terry Sandstrom's home in Wheatland, Wyo. | Photo courtesy of Terry Sandstrom Stephen Graff Former Writer & editor for Energy Empowers, EERE Terry Sandstrom never thought he would run his house entirely on renewable energy, but when faced with a $100,000 price tag to get connected to the grid, he had to look at alternative options. The man who spent his entire life in houses pulling energy from the grid now has 12 solar panels on his front lawn and a wind turbine in the backyard."I had no involvement in the renewable energy process until I got up here," says Terry, who moved from

376

Solar and Wind Powering Wyoming Home | Department of Energy  

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

Solar and Wind Powering Wyoming Home Solar and Wind Powering Wyoming Home Solar and Wind Powering Wyoming Home March 17, 2010 - 4:41pm Addthis Solar panels at Terry Sandstrom's home in Wheatland, Wyo. | Photo courtesy of Terry Sandstrom Solar panels at Terry Sandstrom's home in Wheatland, Wyo. | Photo courtesy of Terry Sandstrom Stephen Graff Former Writer & editor for Energy Empowers, EERE Terry Sandstrom never thought he would run his house entirely on renewable energy, but when faced with a $100,000 price tag to get connected to the grid, he had to look at alternative options. The man who spent his entire life in houses pulling energy from the grid now has 12 solar panels on his front lawn and a wind turbine in the backyard."I had no involvement in the renewable energy process until I got up here," says Terry, who moved from

377

The Origin of Non-Maxwellian Solar Wind Electron Velocity Distribution Function: Connection to Nanoflares in the Solar Corona  

E-Print Network [OSTI]

The formation of the observed core-halo feature in the solar wind electron velocity distribution function is a long-time puzzle. In this letter based on the current knowledge of nanoflares we show that the nanoflare-accelerated electron beams are likely to trigger a strong electron two-stream instability that generates kinetic Alfv\\'en wave and whistler wave turbulence, as we demonstrated in a previous paper. We further show that the core-halo feature produced during the origin of kinetic turbulence is likely to originate in the inner corona and can be preserved as the solar wind escapes to space along open field lines. We formulate a set of equations to describe the heating processes observed in the simulation and show that the core-halo temperature ratio of the solar wind is insensitive to the initial conditions in the corona and is related to the core-halo density ratio of the solar wind and to the quasi-saturation property of the two-stream instability at the time when the exponential decay ends. This rel...

Che, H

2014-01-01T23:59:59.000Z

378

Combined Solar and Wind Energy Systems  

Science Journals Connector (OSTI)

In this paper we present the new concept of combined solar and wind energy systems for buildings applications. Photovoltaics (PV) and small wind turbines (WTs) can be install on buildings in case of sufficient wind potential providing the building with electricity. PVs can be combined with thermal collectors to form the hybrid photovoltaic/thermal (PV/T) systems. The PVs (or the PV/Ts) and WT subsystems can supplement each other to cover building electrical load. In case of using PV/T collectors the surplus of electricity if not used or stored in batteries can increase the temperature of the thermal storage tank of the solar thermal unit. The description of the experimental set?up of the suggested PV/T/WT system and experimental results are presented. In PV/T/WT systems the output from the solar part depends on the sunshine time and the output of the wind turbine part depends on the wind speed and is obtained any time of day or night. The use of the three subsystems can cover a great part of building energy load contributing to conventional energy saving and environment protection. The PV/T/WT systems are considered suitable in rural and remote areas with electricity supply from stand?alone units or mini?grid connection. PV/T/WT systems can also be used in typical grid connected applications.

Y. Tripanagnostopoulos; M. Souliotis; Th. Makris

2010-01-01T23:59:59.000Z

379

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 acdc 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

380

Small Wind Guidebook/What are the Basic Parts of a Small Wind...  

Open Energy Info (EERE)

which is typically converted to grid-compatible AC electricity. Wind Turbine Small wind turbines can be divided into two groups: horizontal axis and vertical axis. The most...

Note: This page contains sample records for the topic "grid connected wind" 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

Experimental investigation of the dynamic installation of a slip joint connection between the monopile and tower of an offshore wind turbine  

Science Journals Connector (OSTI)

The failure of the traditional grouted connections of offshore wind turbines has led to the investigation of alternatives that provide a connection between the foundation pile and the turbine tower. An alternative to the traditional joint is a steel-to-steel connection also called a slip joint. To ensure a proper fit of the slip joint a dynamic installation of the joint is proposed. In this contribution, the effectiveness of harmonic excitation as an installation procedure is experimentally investigated using a 1:10 scaled model of the joint. During the dynamic installation test the applied static load, settlements and dynamic response of the joint are monitored using respectively load cells, taut wires and strain gauges placed both inside and outside the conical surfaces. The results show that settlement occurs only when applying a harmonic load at specific forcing frequencies. The settlement stabilizes to a certain level for each of the specific frequencies, indicating that a controlled way of installation is possible. The results show that it is essential to vibrate at specific frequencies and that a larger amplitude of the harmonic force does not automatically lead to additional settlement.

M L A Segeren; K W Hermans

2014-01-01T23:59:59.000Z

382

The Wind at Our Backs  

Science Journals Connector (OSTI)

...intermittent wind-generated electricity into the electric grid, the options are growing and now include innovative smart grid technologies and storage opportunities such as plug-in cars. Warburg also emphasizes the critical need for more...

Dan Reicher

2012-05-11T23:59:59.000Z

383

Utility-Scale Solar Power Converter: Agile Direct Grid Connect Medium Voltage 4.7-13.8 kV Power Converter for PV Applications Utilizing Wide Band Gap Devices  

SciTech Connect (OSTI)

Solar ADEPT Project: Satcon is developing a compact, lightweight power conversion device that is capable of taking utility-scale solar power and outputting it directly into the electric utility grid at distribution voltage levelseliminating the need for large transformers. Transformers step up the voltage of the power that is generated by a solar power system so it can be efficiently transported through transmission lines and eventually stepped down to usable voltages before it enters homes and businesses. Power companies step up the voltage because less electricity is lost along transmission lines when the voltage is high and current is low. Satcons new power conversion devices will eliminate these heavy transformers and connect a utility-scale solar power system directly to the grid. Satcons modular devices are designed to ensure reliabilityif one device fails it can be bypassed and the system can continue to run.

None

2012-01-25T23:59:59.000Z

384

NREL: Distributed Grid Integration - Projects  

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

Projects Projects Photo of two NREL engineers sitting in front of two computer monitors, discussing a project. NREL engineers work on data capture for micro-grid synchronization waveforms. Photo by Dennis Schroeder, NREL. NREL's distributed energy projects support the integration of new technologies into the electric power grid. This work involves industry, academia, other national laboratories, and various standards organizations. Learn more about our projects: Codes and standards Data collection and visualization Hawaii Clean Energy Initiative Microgrids Power systems modeling Solar Distributed Grid Integration (SunShot) Technology development Vehicle-to-Grid (V2G) Wind2Battery Printable Version Distributed Grid Integration Home Capabilities Projects Codes & Standards

385

Towards Privacy Protection in Smart Grid  

Science Journals Connector (OSTI)

The smart grid is an electronically controlled electrical grid that connects power generation, transmission, distribution, and consumers using information communication technologies. One of the key characteristics of the smart grid is its support for ... Keywords: Authentication, Confidentiality, Energy, Privacy, Smart grid

Sherali Zeadally; Al-Sakib Khan Pathan; Cristina Alcaraz; Mohamad Badra

2013-11-01T23:59:59.000Z

386

Request for Information for Distributed Wind Energy Systems ...  

Office of Environmental Management (EM)

or micro grid (to support local grid operations or offset nearby loads). Because wind turbines are characterized as being used in a "distributed application" based upon their...

387

NREL: Wind Research - Offshore Wind Research  

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

Offshore Wind Research Offshore Wind Research Photo of a European offshore wind farm. Early progress in European Offshore Wind Energy over the last decade provides a glimpse into the vast potential of the global offshore resource. For more than eight years, NREL has worked with the Department of Energy to become an international leader in offshore wind energy research. Capabilities NREL's offshore wind capabilities focus on critical areas that reflect the long-term needs of the offshore wind energy industry and the U.S. Department of Energy including: Offshore Design Tools and Methods Offshore Standards and Testing Energy Analysis of Offshore Systems Offshore Wind Resource Characterization Grid Integration of Offshore Wind Key Research NREL documented the status of offshore wind energy in the United States in

388

Wind Energy Resource Atlas of Armenia  

SciTech Connect (OSTI)

This wind energy resource atlas identifies the wind characteristics and distribution of the wind resource in the country of Armenia. The detailed wind resource maps and other information contained in the atlas facilitate the identification of prospective areas for use of wind energy technologies for utility-scale power generation and off-grid wind energy applications. The maps portray the wind resource with high-resolution (1-km2) grids of wind power density at 50-m above ground. The wind maps were created at the National Renewable Energy Laboratory (NREL) using a computerized wind mapping system that uses Geographic Information System (GIS) software.

Elliott, D.; Schwartz, M.; Scott, G.; Haymes, S.; Heimiller, D.; George, R.

2003-07-01T23:59:59.000Z

389

Novel sensorless generator control and grid fault ride-through strategies for variable-speed wind turbines and implementation on a new real-time simulation platform.  

E-Print Network [OSTI]

??The usage of MW-size variable-speed wind turbines as sources of energy has increased significantly during the last decade. Advantages over fixed-speed wind turbines include more (more)

Yang, Sheng

2010-01-01T23:59:59.000Z

390

Flicker mitigation by reactive power control in wind farm with doubly fed induction generators  

Science Journals Connector (OSTI)

Abstract This paper presents a novel wind farm control with the purpose to mitigate the flicker emission of doubly fed induction generators. The presented control strategy is implemented in a wind farm connected to a distribution grid with consumers. The control system is composed by two controllers in cascade, the wind farm control and the local wind turbine controller. The wind farm control adapts itself to the consumptions of the distribution network and generates the minimal reactive power which allows smoothing the fast variations of wind power output. In this sense, the wind farm control facilitates the integration of wind farm into weak power grids by exchanging reactive power with network. Moreover, the wind farm controller has to be stable, fast and robust and the wind farm dispatch function has to guarantees that the local wind turbine controller can exchange the reactive power set point with network. This controller has been developed with the simulation tool DigSilent PowerFactory v14.1.

Francesc Girbau-Llistuella; Andreas Sumper; Francisco Daz-Gonzlez; Samuel Galceran-Arellano

2014-01-01T23:59:59.000Z

391

Integral Input-to-State Stability of the Drive-Train of a Wind Turbine Chen Wang and George Weiss  

E-Print Network [OSTI]

generating units based on a doubly-fed induction generator (DFIG), as shown in Figure 1, have been widely of the equations of a DFIG in the stator- flux reference frame shows that the electrical torque is C. Wang; #12; # $ Fig. 1. Control of a grid-connected wind-driven DFIG with back-to-back converters

Sontag, Eduardo

392

Western Wind and Solar Integration Study  

SciTech Connect (OSTI)

The Western Wind and Solar Integration Study (WWSIS) is one of the largest regional wind and solar integration studies to date. It was initiated in 2007 to examine the operational impact of up to 35% energy penetration of wind, photovoltaics (PV), and concentrating solar power (CSP) on the power system operated by the WestConnect group of utilities in Arizona, Colorado, Nevada, New Mexico, and Wyoming (see study area map). WestConnect also includes utilities in California, but these were not included because California had already completed a renewable energy integration study for the state. This study was set up to answer questions that utilities, public utilities commissions, developers, and regional planning organizations had about renewable energy use in the west: (1) Does geographic diversity of renewable energy resource help mitigate variability; (2) How do local resources compare to out-of-state resources; (3) Can balancing area cooperation help mitigate variability; (4) What is the role and value of energy storage; (5) Should reserve requirements be modified; (6) What is the benefit of forecasting; and (7) How can hydropower help with integration of renewables? The Western Wind and Solar Integration Study is sponsored by the U.S. Department of Energy (DOE) and run by NREL with WestConnect as a partner organization. The study follows DOE's 20% Wind Energy by 2030 report, which did not find any technical barriers to reaching 20% wind energy in the continental United States by 2030. This study and its partner study, the Eastern Wind Integration and Transmission Study, performed a more in-depth operating impact analysis to see if 20% wind energy was feasible from an operational level. In DOE/NREL's analysis, the 20% wind energy target required 25% wind energy in the western interconnection; therefore, this study considered 20% and 30% wind energy to bracket the DOE analysis. Additionally, since solar is rapidly growing in the west, 5% solar was also considered in this study. The goal of the Western Wind and Solar Integration Study is to understand the costs and operating impacts due to the variability and uncertainty of wind, PV, and CSP on the grid. This is mainly an operations study, (rather than a transmission study), although different scenarios model different transmission build-outs to deliver power. Using a detailed power system production simulation model, the study identifies operational impacts and challenges of wind energy penetration up to 30% of annual electricity consumption.

Lew, D.; Piwko, R.; Jordan, G.; Miller, N.; Clark, K.; Freeman, L.; Milligan, M.

2011-01-01T23:59:59.000Z

393

Wind Energy and Spatial Technology  

E-Print Network [OSTI]

2/3/2011 1 Wind Energy and Spatial Technology Lori Pelech Why Wind Energy? A clean, renewable 2,600 tons of carbon emissions annually ­ The economy · Approximately 85,000 wind energy workers (existing transmission lines)? #12;2/3/2011 3 US Energy Transmission Grid US Wind Map #12;2/3/2011 4

Schweik, Charles M.

394

WREF 2012: THE PAST AND FUTURE COST OF WIND ENERGY  

E-Print Network [OSTI]

wind resource where projects are located, transmission, grid integration,wind resource in which projects are located, as well as development, transmission, integration,

Wiser, Ryan

2013-01-01T23:59:59.000Z

395

Analysis of Mesoscale Model Data for Wind Integration (Poster)  

SciTech Connect (OSTI)

Supports examination of implications of national 20% wind vision, and provides input to integration and transmission studies for operational impact of large penetrations of wind on the grid.

Schwartz, M.; Elliott, D.; Lew, D.; Corbus, D.; Scott, G.; Haymes, S.; Wan, Y. H.

2009-05-01T23:59:59.000Z

396

Comparing The Environmental Impacts Of Diesel Generated Electricity With Hybrid Diesel-Wind Electricity For Off Grid First Nation Communities In Ontario : Incorporating A Life Cycle Approach.  

E-Print Network [OSTI]

??The cost of diesel is rapidly increasing and the environmental impacts associated with diesel fuel combustion are substantial. Hybrid diesel-wind energy was found to be (more)

Schofield, Jade

2011-01-01T23:59:59.000Z

397

Neutral current compensation techniques in autonomous wind energy sources  

Science Journals Connector (OSTI)

The problem of neutral current compensation has to be addressed in Wind Energy integrated weak micro-grids. This study analyses two types of techniques ... same wind energy conversion system. The hybrid micro-grid

Aarti Gupta; Dinesh Jain; Surender Dahiya

2014-12-01T23:59:59.000Z

398

Modelling and control of a variable speed wind turbine driving doubly fed induction generator using three-level PWM converter  

Science Journals Connector (OSTI)

The aim of this researcher is to develop a complete wind central model driven doubly fed induction generator (DFIG) which feeds an AC power grid. For that, two-pulse width modulated (PWM) voltage converters are connected back to back between the rotor terminals of DFIG and the utility grid via a common DC link, in there, our contribution will appear in the utilisation of three levels voltage inverters in order to ameliorate the energy quality. The simulation was carried out on a 2 MW wind-turbine driven DFIG system and the developed unified model validity and the proposed control strategies feasibility are all confirmed by the simulated results.

Fairouz Kendouli; Khoudir Abed; Khalil Nabti; Hocine Benalla

2012-01-01T23:59:59.000Z

399

Testing of a 50-kW Wind-Diesel Hybrid System at the National Wind Technology Center  

SciTech Connect (OSTI)

In remote off-grid villages and communities, a reliable power source is important in improving the local quality of life. Villages often use a diesel generator for their power, but fuel can be expensive and maintenance burdensome. Including a wind turbine in a diesel system can reduce fuel consumption and lower maintenance, thereby reducing energy costs. However, integrating the various components of a wind-diesel system, including wind turbine, power conversion system, and battery storage (if applicable), is a challenging task. To further the development of commercial hybrid power systems, the National Renewable Energy Laboratory (NREL), in collaboration with the New World Village Power Corporation (NWVP), tested a NWVP 50-kW wind-diesel hybrid system connected to a 15/50 Atlantic Orient Corporation (AOC) wind turbine. Testing was conducted from October 1995 through March 1996 at the National Wind Technology Center (NWTC). A main objective of the testing was to better understand the application of wind turbines to weak grids typical of small villages. Performance results contained in this report include component characterization, such as power conversion losses for the rotary converter system and battery round trip efficiencies. In addition, system operation over the test period is discussed with special attention given to dynamic issues. Finally, future plans for continued testing and research are discussed.

Corbus, D. A.; Green, H. J.; Allderdice, A.; Rand, K.; Bianchi, J.; Linton, E.

1996-07-01T23:59:59.000Z

400

Wind Resources in Alaska | OpenEI  

Open Energy Info (EERE)

Resources in Alaska Resources in Alaska Dataset Summary Description Wind resource data for Alaska and southeast Alaska, both high resolution wind resource maps and gridded wind parameters. The two high resolution wind maps are comprised of a grid of cells each containing a single value of average wind speed (m/s) at a hub height of 30, 50, 70, and 100 meters and wind power density (W/m^2) at a hub height of 50 meters for a 40,000 square meter area. The additional gridded wind parameter data includes data for points spaced 2 kilometers apart, and include: predicted wind speed frequency distribution as well as speed and energy in 16 directions (the information needed to produce a wind rose image at a given point). Data included here as .kml files (for viewing in Google Earth). GIS shape files available for the gridded wind parameters datasets from AEDI (http://akenergyinventory.org/data.shtml).

Note: This page contains sample records for the topic "grid connected wind" 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

Control of a wind park with doubly fed induction generators in support of power system stability in case of grid faults  

E-Print Network [OSTI]

(DFIG) con- cept, which facilitates fault ride through of large DFIG wind farms and enables them, that the here presented control strategy of DFIG wind parks even facilitates a fault ride through of nearby parks based on the doubly fed induc- tion generator (DFIG) concept, which facilitates fault ride through

402

Vietnam-GTZ RE Policy and Wind Power Development Project | Open Energy  

Open Energy Info (EERE)

Vietnam-GTZ RE Policy and Wind Power Development Project Vietnam-GTZ RE Policy and Wind Power Development Project Jump to: navigation, search Logo: Vietnam-GTZ Wind Power Development Project Name Vietnam-GTZ Wind Power Development Project Agency/Company /Organization GTZ on behalf of the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (BMU) Partner Ministry of Industry and Trade (MoIT), The Electricity Regulatory Authority of Vietnam (ERAV), Electricity of Vietnam (EVN) Sector Energy Focus Area Wind Topics Policies/deployment programs, Background analysis Website http://www.gtz.de/en/themen/26 Program Start 2008 Program End 2011 Country Vietnam UN Region South-Eastern Asia References Establishment of a Legal Framework and Improvement of Technical Capacities for Grid - connected Wind Power Development in Viet Nam[1]

403

A fuzzy logic supervisor for active and reactive power control of a variable speed wind energy conversion system associated to a flywheel storage system  

Science Journals Connector (OSTI)

In this paper, we propose a Wind Energy Conversion System (WECS) at variable speed using a Doubly Fed Induction Generator (DFIG) controlled on the rotor side through converters. A Flywheel Energy Storage System (FESS) is connected to the studied wind generator at the DC bus in order to evaluate its capacity to participate to the ancillary services. We study the improvement of the active and reactive power quality produced by the wind generator and its effect on the load voltage regulation connected to the wind generator. For that, a fuzzy logic supervisor is established to control the FESS operation and the DC bus voltage in order to smooth the active power fluctuations due to the random wind speed variations. A control law is also described to smooth the reactive power at the connection node to the grid.

Lilia Jerbi; Lotfi Krichen; Abderrazak Ouali

2009-01-01T23:59:59.000Z

404

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

405

Smart Grid | Department of Energy  

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

Grid Grid Smart Grid Smart Grid "Smart grid" generally refers to a class of technology people are using to bring utility electricity delivery systems into the 21st century, using computer-based remote control and automation. These systems are made possible by two-way communication technology and computer processing that has been used for decades in other industries. They are beginning to be used on electricity networks, from the power plants and wind farms all the way to the consumers of electricity in homes and businesses. They offer many benefits to utilities and consumers -- mostly seen in big improvements in energy efficiency on the electricity grid and in the energy users' homes and offices. For a century, utility companies have had to send workers out to gather

406

Offshore Wind Research (Fact Sheet), National Wind Technology Center (NWTC)  

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

Offshore Offshore Wind Research The National Renewable Energy Laboratory is internationally recognized for offshore wind energy research and development (R&D). Its experience and capabilities cover a wide spectrum of wind energy disciplines. NREL's offshore wind R&D efforts focus on critical areas that address the long-term needs of the offshore wind energy industry and the Department of Energy (DOE). R&D efforts include: * Developing offshore design tools and methods * Collaborating with international partners * Testing offshore systems and developing standards * Conducting economic analyses * Characterizing offshore wind resources * Identifying and mitigating offshore wind grid integration challenges and barriers NREL documented the status of offshore wind energy in the United

407

DOE/NREL supported wind energy activities in Alaska  

SciTech Connect (OSTI)

This paper describes three wind energy projects implemented in Alaska. The first, a sustainable technology energy partnerships (STEP) wind energy deployment project in Kotzebue will install 6 AOC 15/50 wind turbines and connect to the existing village diesel grid, consisting of approximately 1 MW average load. It seeks to develop solutions to the problems of arctic wind energy installations (transport, foundations, erection, operation, and maintenance), to establish a wind turbine test site, and to establish the Kotzebue Electric Association as a training and deployment center for wind/diesel technology in rural Alaska. The second project, a large village medium-penetration wind/diesel system, also in Kotzebue, will install a 1-2 MW windfarm, which will supplement the AOC turbines of the STEP project. The program will investigate the impact of medium penetration wind energy on power quality and system stability. The third project, the Alaska high-penetration wind/diesel village power pilot project in Wales will install a high penetration (80-100%) wind/diesel system in a remote Alaskan village. The system will include about 180 kW installed wind capacity, meeting an average village load of about 60 kW. This program will provide a model for high penetration wind retrofits to village diesel power systems and build the capability in Alaska to operate, maintain, and replicate wind/diesel technology. The program will also address problems of: effective use of excess wind energy; reliable diesel-off operation; and the role of energy storage.

Drouilhet, S.

1997-12-01T23:59:59.000Z

408

Building sustainable energy systems: Homeostatic control of grid-connected microgrids, as a means to reconcile power supply and energy demand response management  

Science Journals Connector (OSTI)

Abstract The issue of worldwide over consumption and squandering of electrical energy has resulted in what one might call an energy obesity problem in terms of energy intake and its expenditure. It is indeed something that must change if modern society is to become sustainable someday. This is to be realized in conjunction with adequate government policies and innovative strategies aimed at effectively integrating non-conventional renewable energies (NCRE), with thriftiness and energy efficiency (EE) the three pillars of energy sustainability (ES) in today?s electric power systems generation and distribution infrastructure. This ought to be done in a way that incorporates them jointly, as part of a comprehensive energy strategy to propitiate a wider penetration of distributed generation (DG) solutions. Departing from mainstream literature on the subject, this paper proposes such strategies for integrating hybrid micro-generation power systems to the grid through homeostatic control (HC), as a means to reconcile power supply and energy demand response management (EDRM). These strategies can be designed and implemented in the microgrid?s supervisory control system for the purpose of eliciting EE and thriftiness in consumers to build ES in the system. The theoretical model behind the HC strategies is presented and a numerical example is provided, using real electricity consumption data of a small rural community in Chile. Upon examining a particular set of criteria designed to control renewable power (RP) supply from a grid-tie microgrid to residential consumers, simulation results show that the model proves effective when testing such criteria for different power supply scenarios. Particularly revealing is the role of the energy storage system (ESS) the energy buffer in the HC strategies being proposed and the difference that it makes in eliciting thrifty, efficient energy consumption as a result of individual and collective efforts to ensure energy sustainability of the system as a whole.

Franco Fernando Yanine; Federico I. Caballero; Enzo E. Sauma; Felisa M. Crdova

2014-01-01T23:59:59.000Z

409

Smart Grid  

Broader source: Energy.gov [DOE]

The Energy Department is investing in strategic partnerships to accelerate the Smart Grid -- a two-way, intuitive system that will result in more efficient and reliable electricity for all grid users.

410

Review of Strategies and Technologies for Demand-Side Management on Isolated Mini-Grids  

E-Print Network [OSTI]

power at any one time, whereas on energy-limited grids, such as wind andpower-limited, such as micro-hydro, and those that are also energy- limited, such as wind andsolar and wind mini-grids. Grids that are only power-limited

Harper, Meg

2014-01-01T23:59:59.000Z

411

Successful Rural Wind Program in Peru | Open Energy Information  

Open Energy Info (EERE)

Successful Rural Wind Program in Peru Successful Rural Wind Program in Peru Jump to: navigation, search Name Bringing electricity to the Andes Agency/Company /Organization Soluciones Practicas - NGO Partner Deutsche Welle Sector Energy Focus Area Wind Topics Co-benefits assessment, - Energy Access Resource Type Video Website http://www.dw-world.de/dw/0,,1 Country Peru UN Region South America Many villages in the remote northern highlands of Peru are not connected to the electricity grid. Alternative energy sources are proving a big help. The aid organization "Soluciones Practicas" has installed micro wind turbines in many villages in the Cajamarca region that provide several thousand people with a daily electricity supply. It's helping boost their educational chances, improve communication and facilitate the setting up of

412

Wind Turbine Generator System Duration Test Report for the ARE 442 Wind Turbine  

SciTech Connect (OSTI)

This test is being conducted as part of the U.S. Department of Energy's (DOE) Independent Testing project. This project was established to help reduce the barriers of wind energy expansion by providing independent testing results for small turbines. In total, four turbines are being tested at the NWTC as a part of this project. Duration testing is one of up to 5 tests that may be performed on the turbines, including power performance, safety and function, noise, and power quality tests. The results of the testing provide manufacturers with reports that may be used for small wind turbine certification. The test equipment includes a grid connected ARE 442 wind turbine mounted on a 30.5 meter (100 ft) lattice tower manufactured by Abundant Renewable Energy. The system was installed by the NWTC Site Operations group with guidance and assistance from Abundant Renewable Energy.

van Dam, J.; Baker, D.; Jager, D.

2010-05-01T23:59:59.000Z

413

Testing of a 50-kW wind-diesel hybrid system at the National Wind Technology Center  

SciTech Connect (OSTI)

To further the development of commercial hybrid power systems, the National Renewable Energy Laboratory (NREL), in collaboration with the New World Village Power Corporation (NWVP), tested a NWVP 50-kW wind-diesel hybrid system connected to a 15/50 Atlantic Orient Corporation (AOC) wind turbine. Testing was conducted from October 1995 through March 1996 at the National Wind Technology Center (NWTC). A main objective of the testing was to better understand the application of wind turbines to weak grids typical of small villages. Performance results contained in this paper include component characterization, such as power conversion losses for the rotary converter systems and battery round trip efficiencies. In addition, systems operation over this period is discussed with special attention given to dynamic issues. Finally, future plans for continued testing and research are discussed.

Corbus, D.A.; Green, J.; Allderdice, A.; Rand, K.; Bianchi, J. [National Renewable Energy Lab., Golden, CO (United States); Linton, E. [New World Village Power, Waitsfield, VT (United States)

1996-07-01T23:59:59.000Z

414

ColumbiaGrid Forum  

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

2012 National Electric 2012 National Electric Transmission Congestion Study Workshop Marv Landauer December 13, 2011 2 Northwest Congestion 2006 DOE Congestion Study identified: * "Seattle to Portland" as a Congestion area of Concern * Montana-Wyoming as a Conditional Congestion Area due to potential for coal and wind resource development * Projects are being pursued to relieve Seattle to Portland congestion (Castle Rock-Troutdale line) and Montana-NW congestion (Colstrip Upgrades) 3 Northwest Congestion 2011 WECC Ten Year Regional Transmission Plan identified congestion on: * Montana to NW Path * Pacific Ties (COI and PDCI) Studies included Castle Rock-Troutdale project and potential wind development in Montana and Northwest 4 ColumbiaGrid Perspective * ColumbiaGrid members energized $400

415

Offshore wind energy development in China: Current status and future perspective  

Science Journals Connector (OSTI)

Year 2010 is the significant year of offshore wind power development in China. The first national offshore wind power project is connected to the grid, and the first round of concession projects marks the strong support from central government. It is foreseeable that offshore wind power capacity in China will expand rapidly, and play a notable role in the transition to a sustainable energy system, therefore, the understanding pattern of it is crucial for analyzing the overall wind market in China and global offshore wind power development. This paper firstly provides an overview of global offshore wind power development, then in China, including historical installation, potential of resources, demonstration and concession projects, and target of development. Furthermore, a comprehensive overview of advantages and challenges for developing offshore wind in China is presented. Based on this, analysis on current policies related to offshore wind power and their implementation, current wind farm developers and turbine manufacturers as well as technology transfer and development of China's offshore wind industry is done. All the previous analysis generates complete evaluation of current status and future perspectives of China offshore wind power development, based on which some policy recommendations for sustainable development of offshore wind power are made.

Zhang Da; Zhang Xiliang; He Jiankun; Chai Qimin

2011-01-01T23:59:59.000Z

416

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":""}]}

417

Ris-R-1117(EN) Power Control for Wind Turbines in  

E-Print Network [OSTI]

Risø-R-1117(EN) Power Control for Wind Turbines in Weak Grids: Project summary Henrik Bindner (Ed in Europe large areas exist where the wind resources are good or very good and the grid is relatively weak for the exploitation of the wind resource. There are two main problems concerned with wind power and weak grids

418

NREL: Transmission Grid Integration - Publications  

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

Publications Publications Want updates about future transmission grid integration webinars and publications? Join our mailing list. NREL has an extensive collection of publications related to transmission integration research. Explore the resources below to learn more. Selected Project Publications Read selected publications related to these transmission integration projects: Western Wind and Solar Integration Study Eastern Renewable Generation Integration Study Oahu Wind Integration and Transmission Study Flexible Energy Scheduling Tool for Integration of Variable generation (FESTIV) Active power controls Forecasting Grid Simulation. NREL Publications Database NREL's publications database offers a variety of documents related to transmission integration that were written by NREL staff and

419

Smart Grid Savings and Grid Integration of Renewables in Idaho  

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

1 1 Smart Grid Savings and Grid Integration of Renewables in Idaho Idaho Power Company (IPC) serves more than 495,000 customers in southern Idaho and eastern Oregon. IPC is vertically-integrated and manages power generation, transmission, distribution, and demand-side resources. Faced with grid modernization challenges from new wind power capacity, rising summer peak demands, and aging electricity delivery infrastructure, IPC's Smart Grid Investment Grant (SGIG) project is multi-faceted and covers all aspects of its electric operations. The IPC project involves a total budget of $94 million which includes $47million in Recovery Act funds from the U.S. Department of Energy (DOE). The DOE funds have accelerated IPC's grid

420

CgWind: A high-order accurate simulation tool for wind turbines and wind farms  

SciTech Connect (OSTI)

CgWind is a high-fidelity large eddy simulation (LES) tool designed to meet the modeling needs of wind turbine and wind park engineers. This tool combines several advanced computational technologies in order to model accurately the complex and dynamic nature of wind energy applications. The composite grid approach provides high-quality structured grids for the efficient implementation of high-order accurate discretizations of the incompressible Navier-Stokes equations. Composite grids also provide a natural mechanism for modeling bodies in relative motion and complex geometry. Advanced algorithms such as matrix-free multigrid, compact discretizations and approximate factorization will allow CgWind to perform highly resolved calculations efficiently on a wide class of computing resources. Also in development are nonlinear LES subgrid-scale models required to simulate the many interacting scales present in large wind turbine applications. This paper outlines our approach, the current status of CgWind and future development plans.

Chand, K K; Henshaw, W D; Lundquist, K A; Singer, M A

2010-02-22T23:59:59.000Z

Note: This page contains sample records for the topic "grid connected wind" 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

Reduced vibration motor winding arrangement  

DOE Patents [OSTI]

An individual phase winding arrangement having a sixty electrical degree phase belt width for use with a three phase motor armature includes a delta connected phase winding portion and a wye connected phase winding portion. Both the delta and wye connected phase winding portions have a thirty electrical degree phase belt width. The delta and wye connected phase winding portions are each formed from a preselected number of individual coils each formed, in turn, from an unequal number of electrical conductor turns in the approximate ratio of {radical}3. The individual coils of the delta and wye connected phase winding portions may either be connected in series or parallel. This arrangement provides an armature winding for a three phase motor which retains the benefits of the widely known and utilized thirty degree phase belt concept, including improved mmf waveform and fundamental distribution factor, with consequent reduced vibrations and improved efficiency. 4 figs.

Slavik, C.J.; Rhudy, R.G.; Bushman, R.E.

1997-11-11T23:59:59.000Z

422

Reduced vibration motor winding arrangement  

DOE Patents [OSTI]

An individual phase winding arrangement having a sixty electrical degree phase belt width for use with a three phase motor armature includes a delta connected phase winding portion and a wye connected phase winding portion. Both the delta and wye connected phase winding portions have a thirty electrical degree phase belt width. The delta and wye connected phase winding portions are each formed from a preselected number of individual coils each formed, in turn, from an unequal number of electrical conductor turns in the approximate ratio of .sqroot.3. The individual coils of the delta and wye connected phase winding portions may either be connected in series or parallel. This arrangement provides an armature winding for a three phase motor which retains the benefits of the widely known and utilized thirty degree phase belt concept, including improved mmf waveform and fundamental distribution factor, with consequent reduced vibrations and improved efficiency.

Slavik, Charles J. (Rexford, NY); Rhudy, Ralph G. (Scotia, NY); Bushman, Ralph E. (Lathem, NY)

1997-01-01T23:59:59.000Z

423

Suppression of the vibrations of wind turbine towers  

Science Journals Connector (OSTI)

......renewable and clean energy, wind power is rapidly increasing its...capacity in many countries. Large offshore turbines are subjected to severe...2002) Dynamic modeling of wind farm grid interaction. Wind Eng., 26, 191208. LITTMAN......

Xiaowei Zhao; George Weiss

2011-09-01T23:59:59.000Z

424

The Political Economy of Wind Power in China  

E-Print Network [OSTI]

declaring offshore wind power to be cheaper than nuclearthe profitable uptake of wind power to the grid. 45 The FITemerges as the ratio of wind power to total power increases

Swanson, Ryan Landon

2011-01-01T23:59:59.000Z

425

NREL: Transmission Grid Integration - Webinars  

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

Webinars Webinars Want updates about future transmission grid integration webinars and publications? Join our mailing list. NREL periodically offers webinars on transmission grid integration topics to provide insight into its research. Explore the resources below to learn more. Upcoming Webinars Please check back. Details on future meetings and workshops will be posted as they are available. Past Webinars Results from The Western Wind and Solar Integration Study Phase 2: An examination of how wind and solar power affect operations, costs, and emissions from fossil-fueled generators Wednesday, September 25, 2013 at 12:00 EDT (10:00 MDT) The Western Wind and Solar Integration Study Phase 2 (WWSIS-2), launched in 2011, examines the potential impacts of up to 33% wind and solar energy

426

The Michelson Interferometer for Global High-resolution Thermospheric Imaging (MIGHTI): Wind and Temperature Observations from the Ionospheric Connection Explorer (ICON)  

Science Journals Connector (OSTI)

We describe the Michelson Interferometer for Global High-resolution Thermospheric Imaging (MIGHTI), an instrument designed to measure thermospheric wind and temperature as part of the...

Englert, Christoph R; Harlander, John Mark; Brown, Charles M; Stephan, Andrew W; Makela, Jonathan J; Marr, Kenneth D; Immel, Thomas J

427

Deploying Off-Grid Technology to Eradicate Energy Poverty  

Science Journals Connector (OSTI)

...Mongolia, and the Energy Services Delivery...connected to the grid; or the demand...implementing agency, integration with other...as well as a renewable portfolio standard...so that off-grid and grid-connected...in Laos) to national agencies (e...the Sustainable Energy Authority of...

Benjamin K. Sovacool

2012-10-05T23:59:59.000Z

428

Effects of Temporal Wind Patterns on the Value of Wind-Generated Electricity in California and the Northwest  

E-Print Network [OSTI]

the contribution of wind power to meeting the electricmental additions of wind power to the electric grid. Thisvalue of power to fall at the times when the most wind power

Wiser, Ryan H

2008-01-01T23:59:59.000Z

429

Wind Electrolysis - Hydrogen Cost Optimization (Presentation)  

SciTech Connect (OSTI)

This presentation is about the Wind-to-Hydrogen Project at NREL, part of the Renewable Electrolysis task and the examination of a grid-tied, co-located wind electrolysis hydrogen production facility.

Saur, G.

2011-02-01T23:59:59.000Z

430

NREL: Transportation Research - Electric Vehicle Grid Integration  

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

Grid Integration Illustration of a house with a roof-top photovoltaic system. A wind turbine and utility towers appear in the background. A car, parked in the garage, is...

431

Characterizing autonomic task distribution and handling in grids  

Science Journals Connector (OSTI)

Autonomic computing and grid computing are two innovative information technologies. This paper explores autonomic computing in grids. A grid usually connects a huge number of computers over the Internet as a complex computational system, therefore there ... Keywords: Autonomic computing, Convergence, Grid computing, Multi-agent systems, Software agents, Stability, Task distribution, Task handling, Time delay

Xiaolong Jin; Jiming Liu

2004-10-01T23:59:59.000Z

432

Advanced Grid Integration (AGI) | Department of Energy  

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

Advanced Grid Integration (AGI) Advanced Grid Integration (AGI) Advanced Grid Integration (AGI) The Advanced Grid Integration (AGI) Division leads the federal government's efforts to accelerate modernization of the U.S. electric power grid. By enabling the two-way flow of electricity and information, a Smart Grid will increase the reliability, efficiency, and security of electric transmission, distribution, and use. A modern grid provides the foundation for a strong economy by enabling the integration of clean, renewable energy sources like wind and solar power and supporting the needs of an increasingly digital economy. AGI leverages energy industry cost-share and collaboration to foster the deployment of smart grid technologies and systems and reduce barriers to investment. To accomplish this, the Program is pursuing five core

433

Building a market for small wind: The break-even turnkey cost of residential wind systems in the United States  

SciTech Connect (OSTI)

Although small wind turbine technology and economics have improved in recent years, the small wind market in the United States continues to be driven in large part by state incentives, such as cash rebates, favorable loan programs, and tax credits. This paper examines the state-by-state economic attractiveness of small residential wind systems. Economic attractiveness is evaluated primarily using the break-even turnkey cost (BTC) of a residential wind system as the figure of merit. The BTC is defined here as the aggregate installed cost of a small wind system that could be supported such that the system owner would break even (and receive a specified return on investment) over the life of the turbine, taking into account current available incentives, the wind resource, and the retail electricity rate offset by on-site generation. Based on the analysis presented in this paper, we conclude that: (1) the economics of residential, grid-connected small wind systems is highly variable by state and wind resource class, (2) significant cost reductions will be necessary to stimulate widespread market acceptance absent significant changes in the level of policy support, and (3) a number of policies could help stimulate the market, but state cash incentives currently have the most significant impact, and will be a critical element of continued growth in this market.

Edwards, Jennifer L.; Wiser, Ryan; Bolinger, Mark; Forsyth, Trudy

2004-03-01T23:59:59.000Z

434

Control of wind generator associated to a flywheel energy storage system  

Science Journals Connector (OSTI)

In this paper, a doubly fed variable speed wind induction generator connected to the grid associated to a flywheel energy storage system (FESS) is investigated. The dynamic behaviour of a wind generator, including the models of the wind turbine (aerodynamic), the doubly fed induction generator (DFIG), a ac/ac direct converter, the converter control (algorithm of VENTURINI) and the power control of this system, is studied. Also investigated is a control method of the FESS system, which consists of the classical squirrel-cage induction machine supplied off the variable speed wind generator (VSWG) through a rectifierinverter cascade arrangement. Simulation results obtained on the basis of the dynamic models of the wind generator are presented, for different operating points, to demonstrate the performance of the proposed system.

K. Ghedamsi; D. Aouzellag; E.M. Berkouk

2008-01-01T23:59:59.000Z

435

NREL's Wind R&D Success Stories, National Wind Technology Center (NWTC) (Fact Sheet)  

SciTech Connect (OSTI)

Wind energy research, development, and deployment have reduced the cost of large and small wind turbine technologies, increased wind energy system reliability and operability, lowered risk by validating performance and design, increased the understanding of the true impacts of wind energy on the U.S. electrical infrastructure, and expanded wind energy markets. A synopsis of research conducted on utility-scale wind turbines, small wind turbines, software, components, market development and grid integration are detailed.

Not Available

2010-01-01T23:59:59.000Z

436

NREL: Wind Research - The Denver Post Highlights the NWTC's New 5-MW  

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

The Denver Post Highlights the NWTC's New 5-MW Dynamometer The Denver Post Highlights the NWTC's New 5-MW Dynamometer January 2, 2014 On January 2, a reporter from The Denver Post toured the new 5-megawatt dynamometer test facility at the National Wind Technology Center (NWTC). Denver Post Writer Mark Jaffe spoke with NWTC Center Director Fort Felker to learn more about how these innovative research capabilities can impact the wind industry as a whole. Read the full story . Officially dedicated in December, the new facility houses one of the largest dynamometers in the world, which offers advanced capabilities to test the mechanical and electrical power-producing systems of multimegawatt wind turbines in a controlled environment. The new dynamometer can also be directly connected to the electric grid or through a controllable grid

437

Renewable Energy in China: Xiao Qing Dao Village Power Wind/Diesel Hybrid Pilot Project  

SciTech Connect (OSTI)

In 2000, DOE/NREL and the State Power Corporation of China (SPCC) developed a pilot project to electrify Xiao Qing Dao, a small island located in China's Yellow Sea. The project demonstrates the practicality of renewable energy systems for medium-scale, off-grid applications. It consists of four 10 k-W wind turbines connected to a 30-kW diesel generator, a 40-kW inverter and a battery bank.

Not Available

2006-01-01T23:59:59.000Z

438

Smart Grid Investments Improve Grid Reliability, Resilience,...  

Energy Savers [EERE]

Investments Improve Grid Reliability, Resilience, and Storm Responses (November 2014) Smart Grid Investments Improve Grid Reliability, Resilience, and Storm Responses (November...

439

A mixed integer programming approach for optimal power grid intentional islanding  

Science Journals Connector (OSTI)

A power grid island is a self-sufficient subnetwork in ... flows are allowed. Intentional islanding of a power grid is helpful for the analysis of distributed generation systems connected to a power grid, and val...

Neng Fan; David Izraelevitz; Feng Pan; Panos M. Pardalos; Jianhui Wang

2012-03-01T23:59:59.000Z

440

New England Wind Forum: Markets  

Wind Powering America (EERE)

Markets Markets Selling Wind Power Wind generators interconnected directly to the transmission or distribution grid, or sized in excess of the load of a host end-user, interact with either well-developed or developing markets for the products produced by wind generators: electricity and generation attributes. Buying Wind Power Individuals, companies, institutions, and governments throughout New England have a number of opportunities to buying wind power or support the development of wind power. The links below take you to information on opportunities and guidance for buying wind power in New England. Motivations for Buying Wind Power Buying Wind Power Resources and Tools for Large Energy Users Printable Version Skip footer navigation to end of page. New England Wind Forum Home | Wind Program Home | EERE Home | U.S. Department of Energy

Note: This page contains sample records for the topic "grid connected wind" 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

New England Wind Forum: Selling Wind Power  

Wind Powering America (EERE)

Selling Wind Power Selling Wind Power Markets are either well-developed or developing for each of the 'products' produced by wind generators. These include electricity products and generation attributes. Electricity Electricity can be used in two ways: on-site (interconnected behind a retail customer's meter) of for sales of electricity over the electric grid. On-site generation can displace a portion of a customer's purchases of electricity from the grid. In addition, net metering rules are in place at the state level that in some cases allow generation in excess of on-site load to be sold back to the local utility (see state pages for net metering specifics). For sales over the electricity grid, the Independent System Operator of New England (ISO New England) creates and manages a wholesale market for electric energy, capacity, and ancillary services within the New England Power Pool (NEPOOL). Wind generators may sell their electric energy and capacity in spot markets organized by the ISO, or they may contract with wholesale buyers to sell these products for any term to buyers operating in the ISO New England marketplace. Wind generators do not generally produce other marketable ancillary services. The ISO has rules specific to the operation of wind generators reflecting operations, scheduling, calculation of installed capacity credit, and so forth.

442

Micro-Grids for Colonias (TX)  

SciTech Connect (OSTI)

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

443

Sustainable Power Supply Using Solar Energy and Wind Power Combined with Energy Storage  

Science Journals Connector (OSTI)

Abstract The idea of integrating intermittent sources of energy such as solar and wind with energy storage has several benefits for the electricity grid. The first benefit is that energy storage can help the grid during the periods that grid is facing high peak demand. The second benefit is that using energy storage would help shifting the grid load from peak and busy time to a less demand time. And the third benefit is that using energy storage would help smoothing the variations in power generation fed into the grid by variable and intermittent renewable resources. The third benefit is of particular important because in future more renewable energy sources will be integrated into the electricity grid worldwide. The objective of this paper is to present the results of a study conducted to examine the potential role and potential benefits of energy storage integrated into intermittent sources. Using energy storage will provide an opportunity to create a sustainable power supply, and to make the electricity grid more reliable especially with large proportion of grid-connected renewable sources.

Ahmad Zahedi

2014-01-01T23:59:59.000Z

444

Technological Advances in Hydraulic Drive Trains for Wind Turbines  

Science Journals Connector (OSTI)

The reliability of frequency converters is a major concern for wind turbines. ChapDrive AS has built and tested a hydraulic drive train for variable speed wind turbines which includes a synchronous generator that is connected to the grid without the use of a frequency converter. The hydraulic drive train consists of a hydraulic pump, a variable displacement hydraulic motor, and a synchronous generator, which enables rotor speed control while maintaining synchronous speed of the generator. It has been proven that the hydraulic drive train and the ChapDrive Control system are able to absorb fluctuations in the wind speed and maintain a constant power output without the use of frequency converters. The hydraulic drive train and the ChapDrive Control system has been modeled analytically and compared to measurements, demonstrating a good agreement between simulations and measurements.

K.E.Thomsen; O.G. Dahlhaug; M.O.K. Niss; S.K. Haugset

2012-01-01T23:59:59.000Z

445

Wind energy conversion system  

DOE Patents [OSTI]

The wind energy conversion system includes a wind machine having a propeller connected to a generator of electric power, the propeller rotating the generator in response to force of an incident wind. The generator converts the power of the wind to electric power for use by an electric load. Circuitry for varying the duty factor of the generator output power is connected between the generator and the load to thereby alter a loading of the generator and the propeller by the electric load. Wind speed is sensed electro-optically to provide data of wind speed upwind of the propeller, to thereby permit tip speed ratio circuitry to operate the power control circuitry and thereby optimize the tip speed ratio by varying the loading of the propeller. Accordingly, the efficiency of the wind energy conversion system is maximized.

Longrigg, Paul (Golden, CO)

1987-01-01T23:59:59.000Z

446

2014 International Workshop on Grid Simulator Testing  

Broader source: Energy.gov [DOE]

The National Renewable Energy Laboratory (NREL) and Clemson University will host the second International Workshop on Grid Simulator Testing of Energy Systems and Wind Turbine Powertrains at the Duke Energy Electric Grid Research, Innovations and Development Center at 1253 Supply Street, North Charleston, South Carolina. The purpose of the workshop is to discuss the research and testing needs involved in grid compliance testing of utility-scale wind turbine generators. Information regarding the workshop can be found at: http://www.nrel.gov/esi/pdfs/201406_egrid_workshop_flyer.pdf.

447

2014 Smart Grid R&D Program Peer Review Meeting (Project...  

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

future distribution system. Develop a microgrid with the complete functions: * Grid-connected and islanded modes * Islanding transition * Resynchronization and...

448

Wind Report | Department of Energy  

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

Wind Report Wind Report Wind Report Watch as our clean energy experts answer your questions about the U.S. wind industry -- one of the largest and fastest growing wind markets in the world. Related Links Top 8 Things You Didn't Know About Distributed Wind Small-Scale Distributed Wind: Northern Power Systems 100 kW turbine at the top of Burke Mountain in East Burke, Vermont. | Photo courtesy of Northern Power Systems. Test your energy knowledge by learning interesting facts about distributed wind. Charting the Future of Energy Storage As we continue to incorporate more renewable energy into the grid, technologies that store energy like batteries will be key to providing a continuous flow of clean energy even when the wind isn't blowing and the sun doesn't shine. Wind Industry Soars to New Heights

449

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

SciTech Connect (OSTI)

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

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

2008-09-30T23:59:59.000Z

450

The impact of Production Tax Credits on the profitable production of electricity from wind in the U.S.  

Science Journals Connector (OSTI)

A spatial financial model using wind data derived from assimilated meteorological condition was developed to investigate the profitability and competitiveness of onshore wind power in the contiguous U.S. It considers not only the resulting estimated capacity factors for hypothetical wind farms but also the geographically differentiated costs of local grid connection. The levelized cost of wind-generated electricity for the contiguous U.S. is evaluated assuming subsidy levels from the Production Tax Credit (PTC) varying from 0 to 4/kWh under three cost scenarios: a reference case, a high cost case, and a low cost case. The analysis indicates that in the reference scenario, current PTC subsidies of 2.1/kWh are at a critical level in determining the competitiveness of wind-generated electricity compared to conventional power generation in local power market. Results from this study suggest that the potential for profitable wind power with the current PTC subsidy amounts to more than seven times existing demand for electricity in the entire U.S. Understanding the challenges involved in scaling up wind energy requires further study of the external costs associated with improvement of the backbone transmission network and integration into the power grid of the variable electricity generated from wind.

Xi Lu; Jeremy Tchou; Michael B. McElroy; Chris P. Nielsen

2011-01-01T23:59:59.000Z

451

utility grid | OpenEI Community  

Open Energy Info (EERE)

utility grid utility grid Home Dc's picture Submitted by Dc(15) Member 15 November, 2013 - 13:26 Living Walls ancient building system architect biomimicry building technology cooling cu daylight design problem energy use engineer fred andreas geothermal green building heat transfer heating living walls metabolic adjustment net zero pre-electricity Renewable Energy Solar university of colorado utility grid Wind Much of the discussion surrounding green buildings centers around reducing energy use. The term net zero is the platinum standard for green buildings, meaning the building in question does not take any more energy from the utility grid than it produces using renewable energy resources, such as solar, wind, or geothermal installations (and sometimes these renewable energy resources actually feed energy back to the utility grid).

452

A Guidebook on Grid Interconnection and Islanded Operation of Mini-Grid Power Systems Up to 200 kW  

E-Print Network [OSTI]

Indian Institute of Technology Roorkee, Electro-MechanicalGrid Connection Equipment and Technology Best Practice andand renewable energy technologies; provides training for

Greacen, Chris

2014-01-01T23:59:59.000Z

453

A Guidebook on Grid Interconnection and Islanded Operation of Mini-Grid Power Systems Up to 200 kW  

E-Print Network [OSTI]

3.pdf J.B. Ekanayake, Induction generators for small hydroworldwide) IGC: induction generator controller Induction (ora grid connection, an induction generators output frequency

Greacen, Chris

2014-01-01T23:59:59.000Z

454

A Guidebook on Grid Interconnection and Islanded Operation of Mini-Grid Power Systems Up to 200 kW  

E-Print Network [OSTI]

Laboratories, SEL-547 Distributed Generator Interconnectiona grid-connected distributed generator often depends on themay ask the distributed generator to regulate voltage.

Greacen, Chris

2014-01-01T23:59:59.000Z

455

Control strategies of doubly fed induction generator-based wind turbine system with new rotor current protection topology  

Science Journals Connector (OSTI)

A protection scheme of a doubly fed induction generator (DFIG) based wind turbine system during faults is crowbar activation. With this protection the rotor side converter (RSC) is temporarily disconnected and its vector control over the stator active and reactive power is lost leading to poor power quality at the point of common coupling (PCC). This paper presents a new protection scheme for transient rotor current to improve the performance of DFIG during grid disturbance. The new scheme consisting of a crowbar and series circuit is connected between the rotor windings and RSC to enhance the low voltage ride-through capability of DFIG. The proposed scheme successfully limits the transient rotor current and dc-link voltage and a disconnection of RSC from the rotor windings is avoided during fault. Additionally RSC and grid-side converter controllers are modified to improve the voltage at PCC. Simulations on matlab/Simulink verify the effectiveness of the proposed scheme.

Jackson John Justo; Kyoung-Soo Ro

2012-01-01T23:59:59.000Z

456

SciTech Connect: "smart grid"  

Office of Scientific and Technical Information (OSTI)

Renewable Energy Laboratory (NREL), Golden, CO (United States) Naval Petroleum and Oil Shale Reserves (United States) Navarro Nevada Environmental Services Nevada Field Office,...

457

Grid Connectivity Research, Development & Demonstration Projects  

Broader source: Energy.gov [DOE]

2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

458

European Hydrogen Energy Conference, Maastricht, 18 -22 June 2007 Hydrogen for Grid Integration  

E-Print Network [OSTI]

Integration HYDROGEN AS A MEANS TO CONTROL AND INTEGRATE WIND POWER INTO ELECTRICITY GRIDS Robert Steinberger of wind energy into electricity grids will pose future challenges as the levels of production rise, power advantages towards these goals. The HyWindBalance project, which is described here, looks

Heinemann, Detlev

459

Wind energy  

Science Journals Connector (OSTI)

Wind energy is rapidly growing. In 2006 the installed generating capacity in the world increased by 25%, a growth rate which has more or less been sustained during the last decade. And there is no reason to believe that this growth will slow significantly in the coming years. For example, the United Kingdom's goal for installed wind turbines by 2020 is 33GW up from 2GW in 2006, an average annual growth rate of 22% over that period. More than half of all turbines are installed in Europe, but United States, India and lately China are also rapidly growing markets. The cradle of modern wind energy was set by innovative blacksmiths in rural Denmark. Now the wind provides more than 20% of the electrical power in Denmark, the industry has professionalized and has close ties with public research at universities. This focus issue is concerned with research in wind energy. The main purposes of research in wind energy are to: decrease the cost of power generated by the wind; increase the reliability and predictability of the energy source; investigate and reduce the adverse environmental impact of massive deployment of wind turbines; build research based educations for wind energy engineers. This focus issue contains contributions from several fields of research. Decreased costs cover a very wide range of activities from aerodynamics of the wind turbine blades, optimal site selection for the turbines, optimization of the electrical grid and power market for a fluctuating source, more efficient electrical generators and gears, and new materials and production techniques for turbine manufacturing. The United Kingdom recently started the construction of the London Array, a 1GW off-shore wind farm east of London consisting of several hundred turbines. To design such a farm optimally it is necessary to understand the chaotic and very turbulent flow downwind from a turbine, which decreases the power production and increases the mechanical loads on other nearby turbines. Also addressed within the issue is how much conventional power production can be replaced by the ceaseless wind, with the question of how Greece's target of 29% renewables by 2020 is to be met efficiently. Other topics include an innovative way to determine the power curve of a turbine experimentally more accurately, the use of fluid dynamics tools to investigate the implications of placing vortex generators on wind turbine blades (thereby possibly improving their efficiency) and a study of the perception of wind turbine noise. It turns out that a small but significant fraction of wind turbine neighbours feel that turbine generated noise impairs their ability to rest. The annoyance is correlated with a negative attitude towards the visual impact on the landscape, but what is cause and effect is too early to say. As mentioned there is a rush for wind turbines in many countries. However, this positive development for the global climate is currently limited by practical barriers. One bottleneck is the difficulties for the sub-suppliers of gears and other parts to meet the demand. Another is the difficulties to meet the demand for engineers specialized in wind. For that reason the Technical University of Denmark (DTU) recently launched the world's first Wind Energy Masters Program. Here and elsewhere in the world of wind education and research we should really speed up now, as our chances of contributing to emission free energy production and a healthier global climate have never been better. Focus on Wind Energy Contents The articles below represent the first accepted contributions and further additions will appear in the near future. Wind turbineslow level noise sources interfering with restoration? EjaPedersen andKerstin PerssonWaye On the effect of spatial dispersion of wind power plants on the wind energy capacity credit in Greece GeorgeCaralis, YiannisPerivolaris, KonstantinosRados andArthourosZervos Large-eddy simulation of spectral coherence in a wind turbine wake AJimenez, ACrespo, EMigoya andJGarcia How to improve the estimation of

Jakob Mann; Jens Nrkr Srensen; Poul-Erik Morthorst

2008-01-01T23:59:59.000Z

460

Argonne TTRDC - Smart Grid - Projects  

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

Projects Projects smart grid plug The SAE J-1772 plug-in vehicle connector facilitates both charging and communication. compact metrology A prototype of Argonne's compact metrology system smart grid radio FPGA Field programmable gate array (FPGA) technologies to develop improved software-defined radios for the smart grid Codes and Standards Development Argonne researchers are helping create codes and standards that will enable widespread adoption of electric-drive transportation with smart grid interoperability. For example, the Society of Automotive Engineers' (SAE) J1772 connection standard will enable manufacturers to build compatible connector plugs and vehicle sockets that support both charging and two-way communication with utility companies. Another standard, SAE J2847, will

Note: This page contains sample records for the topic "grid connected wind" 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

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 [2123]. 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

462

ARPA-E: Advancing the Electric Grid  

ScienceCinema (OSTI)

The electric grid was designed with the assumption that all energy generation sources would be relatively controllable, and grid operators would always be able to predict when and where those sources would be located. With the addition of renewable energy sources like wind and solar, which can be installed faster than traditional generation technologies, this is no longer the case. Furthermore, the fact that renewable energy sources are imperfectly predictable means that the grid has to adapt in real-time to changing patterns of power flow. We need a dynamic grid that is far more flexible. This video highlights three ARPA-E-funded approaches to improving the grid's flexibility: topology control software from Boston University that optimizes power flow, gas tube switches from General Electric that provide efficient power conversion, and flow batteries from Harvard University that offer grid-scale energy storage.

Lemmon, John; Ruiz, Pablo; Sommerer, Tim; Aziz, Michael

2014-03-13T23:59:59.000Z

463

ARPA-E: Advancing the Electric Grid  

SciTech Connect (OSTI)

The electric grid was designed with the assumption that all energy generation sources would be relatively controllable, and grid operators would always be able to predict when and where those sources would be located. With the addition of renewable energy sources like wind and solar, which can be installed faster than traditional generation technologies, this is no longer the case. Furthermore, the fact that renewable energy sources are imperfectly predictable means that the grid has to adapt in real-time to changing patterns of power flow. We need a dynamic grid that is far more flexible. This video highlights three ARPA-E-funded approaches to improving the grid's flexibility: topology control software from Boston University that optimizes power flow, gas tube switches from General Electric that provide efficient power conversion, and flow batteries from Harvard University that offer grid-scale energy storage.

Lemmon, John; Ruiz, Pablo; Sommerer, Tim; Aziz, Michael

2014-02-24T23:59:59.000Z

464

Tribological advancements for reliable wind turbine performance  

Science Journals Connector (OSTI)

...the gearbox components. Wind turbine gearboxes experience...the generators to the power grid, respectively...can produce a torsional wind-up of the components...Pontius2009Main shaft support for wind turbine with a fixed and...44061999 Hydraulic fluid power-fluids-method of coding...

2010-01-01T23:59:59.000Z

465

Wind Mill Pattern Optimization using Evolutionary Algorithms  

E-Print Network [OSTI]

to discover techniques for efficiently installing wind farms both onshore and offshore have increased 31062 Toulouse Cedex 9, France jean-marc.alliot@irit.fr ABSTRACT When designing a wind farm layout, we a grid, we can gain up to 3% of energy output on simple exam- ples of wind farms dealing with many

466

Wind power on BPA system sets another new record  

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

another new record The renewable resource passes 4,000 megawatts Portland, Ore. - Wind turbines in the Bonneville Power Administration's transmission grid generated over 4,000...

467

NREL: Wind Research - New Report Characterizes Existing Offshore...  

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

New Report Characterizes Existing Offshore Wind Grid Interconnection Capabilities Study concludes a three-year collaborative investigation with positive outlooks for U.S.-based...

468

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...

469

Wind | OpenEI Community  

Open Energy Info (EERE)

Wind Wind Home Dc's picture Submitted by Dc(15) Member 15 November, 2013 - 13:26 Living Walls ancient building system architect biomimicry building technology cooling cu daylight design problem energy use engineer fred andreas geothermal green building heat transfer heating living walls metabolic adjustment net zero pre-electricity Renewable Energy Solar university of colorado utility grid Wind Much of the discussion surrounding green buildings centers around reducing energy use. The term net zero is the platinum standard for green buildings, meaning the building in question does not take any more energy from the utility grid than it produces using renewable energy resources, such as solar, wind, or geothermal installations (and sometimes these renewable energy resources actually feed energy back to the utility grid).

470

Image enhancement with polymer grid triode arrays  

SciTech Connect (OSTI)

An array of polymer grid triodes connected by a common grid functions as a {open_quotes}plastic retina,{close_quotes} providing local contrast gain control for image enhancement. This simple device, made from layers of conducting polymers, functions as an active resistive network that performs center-surround filtering. The polymer grid triode array with common grid is a continuous analog of the discrete approach of Mead, with a variety of fabrication advantages and significant savings in area within the unit cell of each pixel. 6 refs., 4 figs.

Heeger, A.J.; Heeger, D.J.; Langan, J. [UNIAX Corporation, Santa Barbara, CA (United States)] [and others

1995-12-08T23:59:59.000Z

471

Ion mobility spectrometer with virtual aperture grid  

DOE Patents [OSTI]

An ion mobility spectrometer does not require a physical aperture grid to prevent premature ion detector response. The last electrodes adjacent to the ion collector (typically the last four or five) have an electrode pitch that is less than the width of the ion swarm and each of the adjacent electrodes is connected to a source of free charge, thereby providing a virtual aperture grid at the end of the drift region that shields the ion collector from the mirror current of the approaching ion swarm. The virtual aperture grid is less complex in assembly and function and is less sensitive to vibrations than the physical aperture grid.

Pfeifer, Kent B. (Los Lunas, NM); Rumpf, Arthur N. (Albuquerque, NM)

2010-11-23T23:59:59.000Z

472

Operational behavior of a double-fed permanent magnet generator for wind turbines  

E-Print Network [OSTI]

Greater efficiency in wind turbine systems is achieved by allowing the rotor to change its rate of rotation as the wind speed changes. The wind turbine system is decoupled from the utility grid and a variable speed operation ...

Reddy, Sivananda Kumjula

2005-01-01T23:59:59.000Z

473

Well-posedness and controllability of a wind turbine tower model  

Science Journals Connector (OSTI)

......of this paper is to develop a wind turbine model in the plane of...force and torque control. Large offshore turbines are subjected to severe...2002) Dynamic modeling of wind farm grid interaction. Wind Eng., 26, 191208. LITTMAN......

Xiaowei Zhao; George Weiss

2011-03-01T23:59:59.000Z

474

Hybrid Offshore Wind and Tidal Turbine Power System to Compensate for Fluctuation (HOTCF)  

Science Journals Connector (OSTI)

The hybrid system proposed in this study involves an offshore-wind turbine and a complementary tidal turbine that supplies grid power. The hybrid windtidal system consistently combines wind power and tidal power...

Mohammad Lutfur Rahman; Shunsuke Oka; Yasuyuki Shirai

2011-01-01T23:59:59.000Z

475

Decoupled Control of Doubly Fed Induction Generator by Vector Control for Wind Energy Conversion System  

Science Journals Connector (OSTI)

Abstract Since the penetration of wind power generation in growing, system operators have an increasing interest in analyzing the impact of wind power on the connected power system. The doubly fed induction generator (DFIG) is generally used in the production of the electric energy and more specifically in wind turbines. Currently, to regulate the active and reactive power exchanged between the machine and the grid. A detail dynamic model of a DFIG-based wind-turbine grid-connected system is presented in the d,q -synchronous reference frame by controlling the machine inverter with the algorithm of control based on vector control concept (with stator flux orientation). The aim of control is to have measured active and reactive powers equal to the reference values. These powers must then be collected. In order to measure only the rotor currents, we can use an indirect control method, with integrating power regulation loop, using a classical PI controller: proportionalintegral. In this way, this control is able to limit the machine rotor currents. In another way, an appropriate fitness function is derived to express the time domain evolution of DFIG, with the objective to assure the DFIG continuous operation even under a fault condition and improve at the same time its transient behavior as compared with the indirect control without power loop. The control of our machine is simulated; finally the Simulations results are presented and discussed.

K. Kerrouche; A. Mezouar; Kh. Belgacem

2013-01-01T23:59:59.000Z

476

Calculation Method of Losses and Efficiency of Wind Generators  

Science Journals Connector (OSTI)

In the methods presented in this chapter, wind speed is used as the input data, ... conditions of the WG system, for example, wind turbine output, generator output, output power to the power grid, and various los...

Junji Tamura

2012-01-01T23:59:59.000Z

477

H2 production based on RDG and assisted by a weak grid. System topology, operation and control  

Science Journals Connector (OSTI)

The Renewable Distributed Generation (RDG), such as production of electricity in the vicinity of the load, it is particularly beneficial when the distribution network is "weak" facing specific demands, as in hydrogen production systems connected to rural electrification networks. In these areas, the wind resource may be suitable for this type of generation. This work proposes the topology and the operation and control strategy for a hydrogen production station, "assisted" by a weak AC grid and "powered" by a variable speed wind turbine based on a three-phase double stator induction machine. The wind energy conversion is optimized through adequate control of the generator. The electrolyzer current is regulated for the maximum utilization of the generated power. The high-speed power fluctuations by turbulence are compensated through a controlled energy storage system based on a flywheel. In addition, the system configuration, its operation mode and control, and simulation results are presented.

P.A. Camocardi; G.M. Toccaceli; P.E. Battaiotto; M.G. Cendoya

2012-01-01T23:59:59.000Z

478

Vertical axis wind turbines  

DOE Patents [OSTI]

A vertical axis wind turbine is described. The wind turbine can include a top ring, a middle ring and a lower ring, wherein a plurality of vertical airfoils are disposed between the rings. For example, three vertical airfoils can be attached between the upper ring and the middle ring. In addition, three more vertical airfoils can be attached between the lower ring and the middle ring. When wind contacts the vertically arranged airfoils the rings begin to spin. By connecting the rings to a center pole which spins an alternator, electricity can be generated from wind.

Krivcov, Vladimir (Miass, RU); Krivospitski, Vladimir (Miass, RU); Maksimov, Vasili (Miass, RU); Halstead, Richard (Rohnert Park, CA); Grahov, Jurij (Miass, RU)

2011-03-08T23:59:59.000Z

479

Integrating Renewable Electricity on the Grid  

Science Journals Connector (OSTI)

The demand for carbon?free electricity is driving a growing movement of adding renewable energy to the grid. Renewable Portfolio Standards mandated by states and under consideration by the federal government envision a penetration of 20?30% renewable energy in the grid by 2020 or 2030. The renewable energy potential of wind and solar far exceeds these targets suggesting that renewable energy ultimately could grow well beyond these initial goals.

George Crabtree; Jim Misewich; Ron Ambrosio; Kathryn Clay; Paul DeMartini; Revis James; Mark Lauby; Vivek Mohta; John Moura; Peter Sauer; Francis Slakey; Jodi Lieberman; Humayun Tai

2011-01-01T23:59:59.000Z

480

Definition: Wind power | Open Energy Information  

Open Energy Info (EERE)

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

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481

Bandwidth-aware Co-allocating Meta-schedulers for Mini-grid Architectures William M. Jones  

E-Print Network [OSTI]

Bandwidth-aware Co-allocating Meta-schedulers for Mini-grid Architectures William M. Jones Louis W resource collections naturally lends itself to the formation of a mini-grid. A mini-grid is distinguished from a traditional compu- tational grid in that the mini-grid utilizes a dedicated inter- connection

Jones, William Michael

482

Costs for Integrating Wind into the Future ERCOT System with Related Costs for Savings in CO2 Emissions  

Science Journals Connector (OSTI)

The supply from wind increased by more than 200% between 2006 and 2009 (Texas now has the largest installed capacity for wind of all of the states in the U.S., reflecting in large measure the incentives introduced by the PUC in 2005 to fund connections of new systems in CREZ to the existing grid). ... The contribution from wind is particularly important in winter when demand is at a seasonal minimum (impacting thus differentially the shape of the residual coal-gas curve to the right of the demand curve in Figure 2b). ... Banunarayanan, V.; Miller, N.; Chahal, A.; Zandt, D. V.; Freeman, L.; Walling, M.; Martinez, J.; Walling, R. A.Analysis of Wind Generation Impact on ERCOT Ancillary Services Requirements; GE Energy: Fairfield, Connecticut, March 28, 2008, 2008; p 254. ...

Xi Lu; Michael B. McElroy; Nora A. Sluzas

2011-03-04T23:59:59.000Z

483

Computational methods in wind power meteorology  

E-Print Network [OSTI]

Computational methods in wind power meteorology Bo Hoffmann Jørgensen, Søren Ott, Niels Nørmark, Jakob Mann and Jake Badger Title: Computational methods in wind power meteorology Department: Wind in connection with the project called Computational meth- ods in wind power meteorology which was supported

484

Reactive Power Compensation Strategy of DGIF Wind Park  

Science Journals Connector (OSTI)

In this chapter, two different wind park reactive power compensation strategies for the DFIG wind park connected to the sub-transmission level are proposed. Except considering DFIG wind turbines as dynamic reacti...

JingJing Zhao; Yang Fu; DongDong Li

2014-01-01T23:59:59.000Z

485

False Data Injection Attacks against State Estimation in Electric Power Grids  

E-Print Network [OSTI]

using IEEE test systems. Our results indicate that security protection of the electric power grid must@cs.unc.edu ABSTRACT A power grid is a complex system connecting electric power generators to consumers through power A power grid is a complex system connecting a variety of electric power generators to customers through

Reiter, Michael

486

NREL: Transmission Grid Integration - Research Staff  

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

Research Staff Research Staff NREL's transmission grid integration research staff work to incorporate renewable energy into the transmission system primarily through NREL's Power Systems Engineering Center. Photo of Barbara O'Neill Barbara O'Neill, Transmission and Grid Integration Group Manager M.S., Energy Management and Policy, University of Pennsylvania Engineering Diploma, Petroleum Economics and Management, French Institute of Petroleum B.S., Electrical Engineering, Pratt Institute Barbara has a diverse background with expertise in such fields as wind and solar project development, energy forecasting, renewable energy power purchase agreements, interconnection issues, market structures, and stakeholder engagement. Barbara currently manages the Transmission and Grid

487

NREL: Awards and Honors - North Wind 100/20 Wind Turbine  

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

North Wind 100/20 Wind Turbine North Wind 100/20 Wind Turbine Developers: Gerry Nix and Brian Smith, National Renewable Energy Laboratory; Johnathan Lynch, Clint Coleman, Garrett Bywaters, and Rob Roland, Norhtern Power Systems; Dr. David Bubenheim and Michael Flynn, NASA Ames Research Center; and John Rand, National Science Foundation. The North Wind 100/20 Wind Turbine is a state-of-the-art wind turbine that is ideal for extreme cold conditions perfect for remote locations that may be off-grid or local-grid. The numeric designations represent the North Wind's capacity, 100-kilowatts (which is enough energy for 25-50 homes), and 20-meter diameter blades. The size of the North Wind 100/20 is unique, fitting an important market niche between large and small turbines. Large turbines (400-kilowatts and

488

How Does a Wind Turbine Work?  

Broader source: Energy.gov [DOE]

Wind turbines operate on a simple principle. This animation shows how energy in the wind turns two or three propeller-like blades around a rotor. The rotor is connected to the main shaft, which...

489

How Does a Wind Turbine Work?  

Broader source: Energy.gov [DOE]

Wind turbines operate on a simple principle. The energy in the wind turns two or three propeller-like blades around a rotor. The rotor is connected to the main shaft, which spins a generator to...

490

AWEA Wind Energy Regional Summit: Northeast  

Office of Energy Efficiency and Renewable Energy (EERE)

The AWEA Wind Energy Northeast Regional Summit will connect you with New England-area wind energy professionals and offers the opportunity to discuss significant issues related to land-based and...

491

Communication and Network Security Requirements for Smart Grid  

Science Journals Connector (OSTI)

To relieve the problems of climate change due to global warming, increased renewable energy generation based on wind and solar has been advocated in the power grid. Due to the intermittent nature of such ... ener...

Victor O. K. Li

2014-01-01T23:59:59.000Z

492

Improved vector control strategies of DFIG under Symmetrical Grid  

Science Journals Connector (OSTI)

The behavior of VSCF Doubly Fed Induction Generator (DFIG) during symmetrical grid fault is proposed in this chapter. The equivalent model of DFIG wind turbines in synchronous speed w1...coordinate system is give...

Li Na; Mu Xiu-chun; Song E-nuo

2012-01-01T23:59:59.000Z

493

Now Available: Smart Grid Investments Improve Grid Reliability...  

Energy Savers [EERE]

Smart Grid Investments Improve Grid Reliability, Resilience, and Storm Responses (November 2014) Now Available: Smart Grid Investments Improve Grid Reliability, Resilience, and...

494

Comments of National Grid to the Smart Grid RFI  

Broader source: Energy.gov [DOE]

National Grids Response to the Department of Energy Smart Grid RFI: Addressing Policy and Logistical Challenges of Smart Grid Implementation

495

Experimental Constraints on {\\gamma}-ray Pulsar Gap Models and the Pulsar GeV to Pulsar Wind Nebula TeV Connection  

E-Print Network [OSTI]

The pulsar emission mechanism in the gamma-ray energy band is poorly understood. Currently, there