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1

Wind Atlas Analysis and Application Program (WAsP) | Open Energy  

Open Energy Info (EERE)

Wind Atlas Analysis and Application Program (WAsP) Wind Atlas Analysis and Application Program (WAsP) Jump to: navigation, search Tool Summary Name: Wind Atlas Analysis and Application Program (WAsP) Agency/Company /Organization: Risoe DTU Sector: Energy Focus Area: Renewable Energy, Wind Topics: GHG inventory, Resource assessment Resource Type: Maps, Software/modeling tools User Interface: Desktop Application Website: www.wasp.dk/ Cost: Paid Wind Atlas Analysis and Application Program (WAsP) Screenshot References: WAsP[1] Background "WAsP is a PC program for predicting wind climates, wind resources and power productions from wind turbines and wind farms. The predictions are based on wind data measured at stations in the same region. The program includes a complex terrain flow model, a roughness change model and a model

2

Pages that link to "Wind Atlas Analysis and Application Program...  

Open Energy Info (EERE)

Assistance Network Geothermal Incentives and Policies International Clean Energy Analysis Low Emission Development Strategies Oil & Gas Smart Grid Solar U.S. OpenLabs...

3

Wind Energy Resource Atlas of Oaxaca  

DOE Green Energy (OSTI)

The Oaxaca Wind Resource Atlas, produced by the National Renewable Energy Laboratory's (NREL's) wind resource group, is the result of an extensive mapping study for the Mexican State of Oaxaca. This atlas identifies the wind characteristics and distribution of the wind resource in Oaxaca. The detailed wind resource maps and other information contained in the atlas facilitate the identification of prospective areas for use of wind energy technologies, both for utility-scale power generation and off-grid wind energy applications.

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

2003-08-01T23:59:59.000Z

4

Philippines Wind Energy Resource Atlas Development  

DOE Green Energy (OSTI)

This paper describes the creation of a comprehensive wind energy resource atlas for the Philippines. The atlas was created to facilitate the rapid identification of good wind resource areas and understanding of the salient wind characteristics. Detailed wind resource maps were generated for the entire country using an advanced wind mapping technique and innovative assessment methods recently developed at the National Renewable Energy Laboratory.

Elliott, D.

2000-11-29T23:59:59.000Z

5

European Wind Atlas: Offshore | Open Energy Information  

Open Energy Info (EERE)

European Wind Atlas: Offshore European Wind Atlas: Offshore Jump to: navigation, search Tool Summary LAUNCH TOOL Name: European Wind Atlas: Offshore Focus Area: Renewable Energy Topics: Potentials & Scenarios Website: www.windatlas.dk/Europe/oceanmap.html Equivalent URI: cleanenergysolutions.org/content/european-wind-atlas-offshore,http://c Language: English Policies: Deployment Programs DeploymentPrograms: Technical Assistance This is a European offshore wind resources over open sea map developed by Riso National Laboratory in 1989. The map shows the so-called generalised wind climate over Europe, also sometimes referred to as the regional wind climate or simply the wind atlas. In such a map, the influences of local topography have been removed and only the variations on the large scale are

6

European Wind Atlas: Onshore | Open Energy Information  

Open Energy Info (EERE)

European Wind Atlas: Onshore European Wind Atlas: Onshore Jump to: navigation, search Tool Summary LAUNCH TOOL Name: European Wind Atlas: Onshore Focus Area: Renewable Energy Topics: Potentials & Scenarios Website: www.windatlas.dk/Europe/landmap.html Equivalent URI: cleanenergysolutions.org/content/european-wind-atlas-onshore,http://cl Language: English Policies: Deployment Programs DeploymentPrograms: Technical Assistance This is a European on-shore wind resources at 50 meters of altitude map, developed by Riso National Laboratory in 1989. The map shows the so-called generalised wind climate over Europe, also sometimes referred to as the regional wind climate or simply the wind atlas. In such a map, the influences of local topography have been removed and only the variations on

7

Wind Energy Resource Atlas of Armenia  

DOE Green Energy (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

8

European Wind Atlas: France | Open Energy Information  

Open Energy Info (EERE)

European Wind Atlas: France European Wind Atlas: France Jump to: navigation, search Tool Summary LAUNCH TOOL Name: European Wind Atlas: France Focus Area: Renewable Energy Topics: Potentials & Scenarios Website: 130.226.17.201/extra/web_docs/windmaps/france.jpg Equivalent URI: cleanenergysolutions.org/content/european-wind-atlas-france,http://cle Language: English Policies: Deployment Programs DeploymentPrograms: Technical Assistance This wind resource map shows resources at 50 meters above ground level for four different topographic conditions, including sheltered terrain, open plain, coastal and hills and ridges. The greatest resources appear to be near the Mediterranean Sea coast, and the second greatest resources are near the English Channel and northern Atlantic coast.

9

(The Spanish version of Wind Energy Resource Atlas of Oaxaca)  

DOE Green Energy (OSTI)

The Oaxaca Wind Resource Atlas, produced by the National Renewable Energy Laboratory's (NREL's) wind resource group, is the result of an extensive mapping study for the Mexican State of Oaxaca. This atlas identifies the wind characteristics and distribution of the wind resource in Oaxaca. The detailed wind resource maps and other information contained in the atlas facilitate the identification of prospective areas for use of wind energy technologies, both for utility-scale power generation and off-grid wind energy applications.

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

2004-04-01T23:59:59.000Z

10

Wind Energy Resource Atlas of Southeast China  

DOE Green Energy (OSTI)

This wind energy resource atlas identifies the wind characteristics and distribution of the wind resource in two regions of southeast China. The first region is the coastal area stretching from northern Fujian south to eastern Guangdong and extending approximately 100 km inland. The second region is centered on the Poyang Lake area in northern Jiangxi. This region also includes parts of two other provinces-Anhui and Hubei-and extends from near Anqing in Anhui south to near Nanchang in Jiangxi. The detailed wind resource maps and other information contained in the atlas facilitate the identification of prospective areas for use of wind energy technologies, both for utility-scale power generation and off-grid wind energy applications. We created the high-resolution (1-km2) maps in 1998 using a computerized wind resource mapping system developed at the National Renewable Energy Laboratory (NREL). The mapping system uses software known as a Geographical Information System (GIS).

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

2002-11-01T23:59:59.000Z

11

Wind Resource Atlas of Oaxaca | Open Energy Information  

Open Energy Info (EERE)

Resource Atlas of Oaxaca Resource Atlas of Oaxaca Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Wind Resource Atlas of Oaxaca Focus Area: Renewable Energy Topics: Potentials & Scenarios Website: www.nrel.gov/wind/pdfs/34519.pdf Equivalent URI: cleanenergysolutions.org/content/wind-resource-atlas-oaxaca,http://cle Language: English Policies: Deployment Programs DeploymentPrograms: Technical Assistance This wind resource atlas identifies wind characteristics and distribution of wind resources in Oaxaca, Mexico, at a wind power density of 50 meters above ground. The detailed wind resource maps contained in the atlas facilitate the identification of prospective areas for use of wind energy technologies for utility-scale power generation, village power, and off-grid wind energy applications. The wind maps were created using a

12

The KAMM/WAsP Numerical Wind Atlas A powerful ingredient for wind energy planning  

E-Print Network (OSTI)

The KAMM/WAsP Numerical Wind Atlas A powerful ingredient for wind energy planning J. Badger, N.G. Mortensen, J.C. Hansen Wind Energy Department Risø National Laboratory Great Wall World Renewable Energy Forum Beijing, 23-27 October 2006 #12;Wind Farm Planning National Wind Atlas Environmental Atlases Maps

13

Wind Energy Resource Atlas of Sri Lanka and the Maldives  

DOE Green Energy (OSTI)

The Wind Energy Resource Atlas of Sri Lanka and the Maldives, produced by the National Renewable Energy Laboratory's (NREL's) wind resource group identifies the wind characteristics and distribution of the wind resource in Sri Lanka and the Maldives. The detailed wind resource maps and other information contained in the atlas facilitate the identification of prospective areas for use of wind energy technologies, both for utility-scale power generation and off-grid wind energy applications.

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

2003-08-01T23:59:59.000Z

14

Wind Resource Atlas of Oaxaca (CD-ROM)  

DOE Green Energy (OSTI)

The CD version of the Oaxaca Wind Resource Atlas, produced by the National Renewable Energy Laboratory's (NREL's) wind resource group, is the result of an extensive mapping study for the Mexican State of Oaxaca. This atlas identifies the wind characteristics and distribution of the wind resource in Oaxaca. The detailed wind resource maps and other information contained in the atlas facilitate the identification of prospective areas for use of wind energy technologies, both for utility-scale power generation and off-grid wind energy applications.

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

2003-08-01T23:59:59.000Z

15

Wind Energy Resource Atlas of the Philippines  

DOE Green Energy (OSTI)

This report contains the results of a wind resource analysis and mapping study for the Philippine archipelago. The study's objective was to identify potential wind resource areas and quantify the value of those resources within those areas. The wind resource maps and other wind resource characteristic information will be used to identify prospective areas for wind-energy applications.

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

2001-03-06T23:59:59.000Z

16

Wind Energy Resource Atlas of Armenia (CD-ROM)  

DOE Green Energy (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

17

Wind Energy Resource Atlas of Armenia  

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

Elliott, M. Schwartz, G. Scott, S. Haymes, D. Heimiller, R. George Elliott, M. Schwartz, G. Scott, S. Haymes, D. Heimiller, R. George National Renewable Energy Laboratory Wind Energy Resource Atlas of Armenia July 2003 * NREL/TP-500-33544 Wind Energy Resource Atlas of Armenia D. Elliott M. Schwartz G. Scott S. Haymes, D. Heimiller R. George Prepared under Task No. WF7C0202 NOTICE This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial

18

Wind Energy Resource Atlas of the United States  

DOE Data Explorer (OSTI)

This atlas, containing more than 72 maps, estimates wind energy resource for the United States and its terrorities. Early wind resource atlases created for the Federal Wind Energy Program were based on date collected before 1979. Since then, hundreds of new sites have been instrumented specifically for wind energy assessment purposes, and many of these have been located in areas thought to have high wind resource but where data were previously not available or were very limited [copied from http://rredc.nrel.gov/wind/pubs/atlas/chp1.html].

19

Canadian Wind Energy Atlas Potential Website | Open Energy Information  

Open Energy Info (EERE)

Canadian Wind Energy Atlas Potential Website Canadian Wind Energy Atlas Potential Website Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Canadian Wind Energy Atlas Potential Website Focus Area: Renewable Energy Topics: Opportunity Assessment & Screening Website: www.windatlas.ca/en/index.php Equivalent URI: cleanenergysolutions.org/content/canadian-wind-energy-atlas-potential- Language: English Policies: Deployment Programs DeploymentPrograms: Technical Assistance Environment Canada's Wind Energy Atlas website aims at developing new meteorological tools to be used by Canada's wind energy industry. It offers the possibility to browse through the results of the numerical simulations that were run on all of Canada in order to determine its wind energy potential. Consultants and the general public will find valuable data about

20

Wind Energy Atlas of Brazil | Open Energy Information  

Open Energy Info (EERE)

Energy Atlas of Brazil Energy Atlas of Brazil Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Wind Energy Atlas of Brazil Focus Area: Renewable Energy Topics: Potentials & Scenarios Website: 130.226.17.201/extra/web_docs/windmaps/Brazil_wind_map.pdf Equivalent URI: cleanenergysolutions.org/content/wind-energy-atlas-brazil,http://clean Language: English Policies: Deployment Programs DeploymentPrograms: Technical Assistance The maps provided in this resource result from a surface wind modelling tool called MesoMap that estimates the wind potential over the Brazilian territory by simulating the atmosphere dynamics of the wind regime and the related meteorological variables from validated atmosphere pressure-data samples. References Retrieved from "http://en.openei.org/w/index.php?title=Wind_Energy_Atlas_of_Brazil&oldid=514616

Note: This page contains sample records for the topic "wind atlas analysis" 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

Wind Atlas for Egypt A national database for wind resource assessment and  

E-Print Network (OSTI)

Wind Atlas for Egypt A national database for wind resource assessment and wind power planning Niels G. Mortensen Wind Energy Department Risø National Laboratory MENAREC 3, Cairo, Egypt 12 June 2006 #12;Acknowledgements The "Wind Atlas for Egypt" is the result of a comprehensive team effort! · New

22

Wind Energy Resource Atlas of the Dominican Republic  

DOE Green Energy (OSTI)

The Wind Energy Resource Atlas of the Dominican Republic identifies the wind characteristics and the distribution of the wind resource in this country. This major project is the first of its kind undertaken for the Dominican Republic. The information contained in the atlas is necessary to facilitate the use of wind energy technologies, both for utility-scale power generation and off-grid wind energy applications. A computerized wind mapping system developed by NREL generated detailed wind resource maps for the entire country. This technique uses Geographic Information Systems (GIS) to produce high-resolution (1-square kilometer) annual average wind resource maps.

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

2001-10-01T23:59:59.000Z

23

Failure Atlas for Rolling Bearings in Wind Turbines  

DOE Green Energy (OSTI)

This Atlas is structured as a supplement to the book: T.E. Tallian: Failure Atlas for Hertz Contact Machine Elements, 2nd edition, ASME Press New York, (1999). The content of the atlas comprises plate pages from the book that contain bearing failure images, application data, and descriptions of failure mode, image, and suspected failure causes. Rolling bearings are a critical component of the mainshaft system, gearbox and generator in the rapidly developing technology of power generating wind turbines. The demands for long service life are stringent; the design load, speed and temperature regimes are demanding and the environmental conditions including weather, contamination, impediments to monitoring and maintenance are often unfavorable. As a result, experience has shown that the rolling bearings are prone to a variety of failure modes that may prevent achievement of design lives. Morphological failure diagnosis is extensively used in the failure analysis and improvement of bearing operation. Accumulated experience shows that the failure appearance and mode of failure causation in wind turbine bearings has many distinguishing features. The present Atlas is a first effort to collect an interpreted database of specifically wind turbine related rolling bearing failures and make it widely available. This Atlas is structured as a supplement to the book: T. E. Tallian: Failure Atlas for Hertz Contact Machine Elements, 2d edition, ASME Press New York, (1999). The main body of that book is a comprehensive collection of self-contained pages called Plates, containing failure images, bearing and application data, and three descriptions: failure mode, image and suspected failure causes. The Plates are sorted by main failure mode into chapters. Each chapter is preceded by a general technical discussion of the failure mode, its appearance and causes. The Plates part is supplemented by an introductory part, describing the appearance classification and failure classification systems used, and by several indexes. The present Atlas is intended as a supplement to the book. It has the same structure but contains only Plate pages, arranged in chapters, each with a chapter heading page giving a short definition of the failure mode illustrated. Each Plate page is self contained, with images, bearing and application data, and descriptions of the failure mode, the images and the suspected causes. Images are provided in two resolutions: The text page includes 6 by 9 cm images. In addition, high resolution image files are attached, to be retrieved by clicking on their 'push pin' icon. While the material in the present Atlas is self-contained, it is nonetheless a supplement to the book and the complete interpretation of the terse image descriptions and of the system underlying the failure code presupposes familiarity with the book. Since this Atlas is a supplement to the book, its chapter numbering follows that of the book. Not all failure modes covered in the book have been found among the observed wind turbines. For that reason, and because of the omission of introductory matter, the chapter numbers in this Atlas are not a continuous sequence.

Tallian, T. E.

2006-01-01T23:59:59.000Z

24

WIND ATLAS FOR EGYPT: MEASUREMENTS, MICRO-AND MESOSCALE MODELLING  

E-Print Network (OSTI)

WIND ATLAS FOR EGYPT: MEASUREMENTS, MICRO- AND MESOSCALE MODELLING Niels G. Mortensen1 , Jens Enevoldsen Wind Energy Department, Risø National Laboratory, Roskilde, Denmark Laila Georgy Youssef, Usama Said Said, Ashour Abd El-Salam Moussa, Mohammad Akmal Mahmoud Wind Energy Department, New and Renewable

25

Global Atlas for Solar and Wind Energy | Open Energy Information  

Open Energy Info (EERE)

form form View 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 with form History Facebook icon Twitter icon » Global Atlas for Solar and Wind Energy Jump to: navigation, search Tool Summary Name: Global Atlas for Solar and Wind Energy Agency/Company /Organization: International Renewable Energy Agency (IRENA) Sector: Energy Focus Area: Renewable Energy References: IRENA - Global Atlas[1] Overview "The Global Atlas for Solar and Wind Energy project aims to create a collaborative internet-based Geographic Information System (GIS) of these renewable resources that can direct and enhance cooperation on global scenarios and strategies and support decision-making, especially in areas

26

Wind Energy Resource Atlas of Southeast China (CD-ROM)  

DOE Green Energy (OSTI)

This wind energy resource atlas identifies the wind characteristics and distribution of the wind resource in two regions of southeast China. The first region is the coastal area stretching from northern Fujian south to eastern Guangdong and extending approximately 100 km inland. The second region is centered on the Poyang Lake area in northern Jiangxi. This region also includes parts of two other provinces-Anhui and Hubei-and extends from near Anqing in Anhui south to near Nanchang in Jiangxi. The detailed wind resource maps and other information contained in the atlas facilitate the identification of prospective areas for use of wind energy technologies, both for utility-scale power generation and off-grid wind energy applications. We created the high-resolution (1-km2) maps in 1998 using a computerized wind resource mapping system developed at the National Renewable Energy Laboratory (NREL). The mapping system uses software known as a Geographical Information System (GIS).

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

2002-11-01T23:59:59.000Z

27

Wind energy resource atlas. Volume 10. Alaska region  

DOE Green Energy (OSTI)

This atlas of the wind energy resource is composed of introductory and background information, a regional summary of the wind resource, and assessments of the wind resource in each subregion of Alaska. Background is presented on how the wind resource is assessed and on how the results of the assessment should be interpreted. A description of the wind resource on a state scale is given. The results of the wind energy assessments for each subregion are assembled into an overview and summary of the various features of the Alaska wind energy resource. An outline to the descriptions of the wind resource given for each subregion is included. Assessments for individual subregions are presented as separate chapters. The subregion wind energy resources are described in greater detail than is the Alaska wind energy resource, and features of selected stations are discussed. This preface outlines the use and interpretation of the information found in the subregion chapters.

Wise, J.L.; Wentink, T. Jr.; Becker, R. Jr.; Comiskey, A.L.; Elliott, D.L.; Barchet, W.R.; George, R.L.

1980-12-01T23:59:59.000Z

28

Wind energy resource atlas. Volume 9. The Southwest Region  

DOE Green Energy (OSTI)

This atlas of the wind energy resource is composed of introductory and background information, a regional summary of the wind resource, and assessments of the wind resource in Nevada and California. Background on how the wind resource is assessed and on how the results of the assessment should be interpreted is presented. A description of the wind resource on a regional scale is then given. The results of the wind energy assessments for each state are assembled into an overview and summary of the various features of the regional wind energy resource. An introduction and outline to the descriptions of the wind resource given for each state are given. Assessments for individual states are presented as separate chapters. The state wind energy resources are described in greater detail than is the regional wind energy resource, and features of selected stations are discussed.

Simon, R.L.; Norman, G.T.; Elliott, D.L.; Barchet, W.R.; George, R.L.

1980-11-01T23:59:59.000Z

29

Wind energy resource atlas. Volume 4. The Northeast region  

DOE Green Energy (OSTI)

This atlas of the wind energy resource is composed of introductory and background information, a regional summary of the wind resource, and assessments of the wind resource in each state of the region. Background is presented on how the wind resource is assessed and on how the results of the assessment should be interpreted. A description of the wind resource on a regional scale is then given. The results of the wind energy assessments for each state are assembled in this chapter into an overview and summary of the various features of the regional wind energy resource. An introduction and outline are provided for in the descriptions of the wind resource given for each state. Assessments for individual states are presented. The state wind energy resources are described in greater detail than is the regional wind energy resource, and features of selected stations are discussed. This preface outlines the use and interpretation of the information found in the state chapters.

Pickering, K.E.; Vilardo, J.M.; Schakenbach, J.T.; Elliott, D.L.; Barchet, W.R.; George, R.L.

1980-09-01T23:59:59.000Z

30

Wind energy resource atlas. Volume 5: the East Central Region  

DOE Green Energy (OSTI)

This atlas of the wind energy resource is composed of introductory and background information, a regional summary of the wind resource, and assessments of the wind resource in each state of the region. Background is presented on how the wind resource is assessed and on how the results of the assessment should be interpreted. A description of the wind resource on a regional scale is then given. The results of the wind energy assessments for each state are assembled into an overview and summary of the various features of the regional wind energy resource. Assessments for individual states are presented as separate chapters. The state wind energy resources are described in greater detail than is the regional wind energy resource, and features of selected stations are discussed. This preface outlines the use and interpretation of the information found in the state chapters. States include Delaware, Maryland, Kentucky, North Carolina, Tennessee, Virginia, and West Virginia.

Brode, R.; Stoner, R.; Elliott, D.L.; Barchet, W.R.; George, R.L.

1980-01-01T23:59:59.000Z

31

The ATLAS Distributed Analysis System  

E-Print Network (OSTI)

In the LHC operations era, analysis of the multi-petabyte ATLAS data sample by globally distributed physicists is a challenging task. To attain the required scale the ATLAS Computing Model was designed around the concept of grid computing, realized in the Worldwide LHC Computing Grid (WLCG), the largest distributed computational resource existing in the sciences. The ATLAS experiment currently stores over 140 PB of data and runs about 140,000 concurrent jobs continuously at WLCG sites. During the first run of the LHC, the ATLAS Distributed Analysis (DA) service has operated stably and scaled as planned. More than 1600 users submitted jobs in 2012, with 2 million or more analysis jobs per week, peaking at about a million jobs per day. The system dynamically distributes popular data to expedite processing and maximally utilize resources. The reliability of the DA service is high but steadily improving; grid sites are continually validated against a set of standard tests, and a dedicated team of expert shifters ...

Legger, F; The ATLAS collaboration; Pacheco Pages, A; Stradling, A

2013-01-01T23:59:59.000Z

32

Wind energy resource atlas. Volume 3. Great Lakes Region  

DOE Green Energy (OSTI)

The Great Lakes Region atlas assimilates six collections of wind resource data, one for the region and one for each of the five states that compose the Great Lakes region: Illinois, Indiana, Michigan, Ohio, Wisconsin. At the state level, features of the climate, topography, and wind resource are discussed in greater detail than in the regional discussion and the data locations on which the assessment is based are mapped. Variations over several time scales in the wind resource at selected stations in each state are shown on graphs of monthly average and interannual wind speed and power, and of hourly average wind speed for each season. Other graphs present speed, direction, and duration frequencies of the wind at these locations.

Paton, D.L.; Bass, A.; Smith, D.G.; Elliott, D.L.; Barchet, W.R.; George, R.L.

1981-02-01T23:59:59.000Z

33

Wind energy resource atlas. Volume 2. The North Central Region  

SciTech Connect

The North Central atlas assimilates six collections of wind resource data: one for the region and one for each of the five states that compose the North Central region (Iowa, Minnesota, Nebraska, North Dakota, and South Dakota). At the state level, features of the climate, topography and wind resource are discussed in greater detail than is provided in the regional discussion, and that data locations on which the assessment is based are mapped. Variations, over several time scales, in the wind resource at selected stations in each state are shown on graphs of monthly average and international wind speed and power, and hourly average wind speed for each season. Other graphs present speed direction and duration frequencies of the wind at these locations.

Freeman, D.L.; Hadley, D.L.; Elliott, D.L.; Barchet, W.R.; George, R.L.

1981-02-01T23:59:59.000Z

34

Wind energy resource atlas. Volume 7. The south central region  

DOE Green Energy (OSTI)

This atlas of the south central region combines seven collections of wind resource data: one for the region, and one for each of the six states (Arkansas, Kansas, Louisiana, Missouri, Oklahoma, and Texas). At the state level, features of the climate, topography, and wind resource are discussed in greater detail than that provided in the regional discussion, and the data locations on which the assessment is based are mapped. Variations, over several time scales, in the wind resource at selected stations in each state are shown on graphs of monthly average and interannual wind speed and power, and hourly average wind speed for each season. Other graphs present speed, direction, and duration frequencies of the wind at these locations.

Edwards, R.L.; Graves, L.F.; Sprankle, A.C.; Elliott, D.L.; Barchet, W.R.; George, R.L.

1981-03-01T23:59:59.000Z

35

Wind Energy Resource Atlas of the Dominican Republic  

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

October 2001 * NREL/TP-500-27602 October 2001 * NREL/TP-500-27602 Wind Energy Resource Atlas of the Dominican Republic D. Elliott M. Schwartz R. George S. Haymes D. Heimiller G. Scott National Renewable Energy Laboratory J. Kline RAM Associates Prepared under Task Nos. WER11050 and DO059999 NOTICE This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial

36

Wind Energy Resource Atlas of Armenia (CD-ROM)  

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

Resource Atlas of Armenia (CD-ROM) http:www.nrel.govdocsfy03osti33877CD.zip (ZIP 31.9 MB) NRELCD-500-33877 July 2003 Instructions: The URL above links to a zipped archive...

37

Wind energy resource atlas. Volume 12. Puerto Rico and US Virgin Islands  

DOE Green Energy (OSTI)

The Puerto Rico/US Virgin Island atlas assimilates three collections of wind resource data: one for the region as a whole and one each for both the Commonwealth of Puerto Rico and the US Virgin Islands. For the two subregions, features of the climate, topography and wind resource are discussed in greater detail than is provided in the regional discussion, and the data locations on which the assessment is based are mapped. Variations, over several time scales, in the wind resource at selected stations in both subregions are shown on graphs of monthly average and interannual wind speed and power, and hourly average wind speed for each season. Other graphs present speed, direction and duration frequencies of the wind at these locations.

Wegley, H.L.; Elliott, D.L.; Barchet, W.R.; George, R.L.

1981-01-01T23:59:59.000Z

38

Wind energy resource atlas. Volume 8. The southern Rocky Mountain region  

DOE Green Energy (OSTI)

The Southern Rocky Mountain atlas assimilates five collections of wind resource data: one for the region and one for each of the four states that compose the Southern Rocky Mountain region (Arizona, Colorado, New Mexico, and Utah). At the state level, features of the climate, topography and wind resource are discussed in greater detail than is provided in the regional discussion, and the data locations on which the assessment is based are mapped. Variations, over several time scales, in the wind resource at selected stations in each state are shown on graphs of monthly average and interannual wind speed and power, and hourly average wind speed for each season. Other graphs present speed, direction, and duration frequencies of the wind at these locations.

Andersen, S.R.; Freeman, D.L.; Hadley, D.L.; Elliott, D.L.; Barchet, W.R.; George, R.L.

1981-03-01T23:59:59.000Z

39

Wind Energy Resource Atlas. Volume 11. Hawaii and Pacific Islands Region  

DOE Green Energy (OSTI)

This atlas of the wind energy resource is composed of introductory and background information, and assessments of the wind resource in each division of the region. Background on how the wind resource is assessed and on how the results of the assessment should be inerpreted is presented. An introduction and outline to the descriptions of the wind resource for each division are provided. Assessments for individual divisions are presented as separate chapters. Much of the information in the division chapters is given in graphic or tabular form. The sequences for each chapter are similar, but some presentations used for Hawaii are inappropriate or impractical for presentation with the Pacific Islands. Hawaii chapter figure and tables are cited below and appropriate Pacific Islands figure and table numbers are included in brackets ().

Schroeder, T.A.; Hori, A.M.; Elliott, D.L.; Barchet, W.R.; George, R.L.

1981-02-01T23:59:59.000Z

40

NREL: Energy Analysis - Wind Technology Analysis  

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

Wind and Hydropower Technology Analysis Wind and Hydropower Technology Analysis Wind and hydropower analysis supports advanced technologies that convert more of the nation's wind into electricity. Grid Operational Impact Analysis The wind program will address the variable, normally uncontrollable nature of wind power plant output, and the additional needs that its operation imposes on the overall grid. At present, the generation and transmission operational impacts that occur due to wind variability are not well quantified. This research will include efforts to quantify and fairly allocate impacts in both an engineering and cost sense. Methods of analysis are at an early stage of development. Without realistic analysis and cost allocation, utilities tend to overestimate imposed operational costs,

Note: This page contains sample records for the topic "wind atlas analysis" 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

NREL: Wind Research - Controls Analysis  

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

Controls Analysis Controls Analysis Photo of a man working inside the hub of a large 3-blades turbine. Working in the hub of Controls Advanced Research Turbine (CART) at the National Wind Technology Center (NWTC) Man in wind turbine hub viewed from inside a wind turbine's blade. At the National Wind Technology Center (NWTC), we design, implement, and test advanced wind turbine controls to maximize energy extraction and reduce structural dynamic loads. These control designs are based on linear models of the turbine that are simulated using specialized modeling software. The resulting advanced controls algorithms are field tested on the NWTC's Controls Advanced Research Turbines (CARTs). NWTC researchers are also studying blade pitch and generator torque, and employing advanced sensors to optimize power capture and reduce wind

42

Advanced Coal Wind Hybrid: Economic Analysis  

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

Coal Wind Hybrid: Economic Analysis Title Advanced Coal Wind Hybrid: Economic Analysis Publication Type Report LBNL Report Number LBNL-1248E Year of Publication 2008 Authors...

43

Advanced Coal Wind Hybrid: Economic Analysis  

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

Advanced Coal Wind Hybrid: Economic Analysis Title Advanced Coal Wind Hybrid: Economic Analysis Publication Type Report Year of Publication 2008 Authors Phadke, Amol, Charles A....

44

Principal Component Analysis of Wind Profiler Observations  

Science Conference Proceedings (OSTI)

Principal component analysis (PCA) is applied to wind profiler observations to study the vertical profile of the wind field and its temporal evolution. The rationale for decomposing timeheight wind profiler data using PCA is twofold. The ...

Christopher R. Williams

1997-06-01T23:59:59.000Z

45

Advanced Coal Wind Hybrid: Economic Analysis  

E-Print Network (OSTI)

LBNL-1248E Advanced Coal Wind Hybrid: Economic Analysis Principal Authors Amol Phadke1 , Charles;Advanced Coal Wind Hybrid: Economic Analysis ii LBNL-1248E Advanced Coal Wind Hybrid: Economic Analysis and Analysis of the U.S. Department of Energy (DOE) under Contract No. DE-AC02-05CH11231. #12;#12;Advanced Coal

46

The German National Analysis Facility as a tool for ATLAS analyses  

E-Print Network (OSTI)

In 2008 the German National Analysis Facility (NAF) at DESY was established. It is attached to and builds on top of the DESY Grid infrastructure. The facility was designed to provide the best possible analysis infrastructure for high energy particle physics of the ATLAS, CMS, LHCb and ILC experiments. The Grid and local infrastructure of the German NAF will be reviewed with a focus on the ATLAS part. Both parts include large scale storage and a batch system. The main emphasis of this presentation is the ATLAS specific customisation and utilisation of the NAF. This refers not only to the NAF components but also to the different components of the ATLAS analysis framework. Experience from operating and supporting ATLAS users on the German NAF will be presented. The ATLAS usage of the different components will be shown including some typical use cases of user analysis. Finally, the question will be addressed if the design of the NAF meets the ATLAS expectations for efficient data analysis in the era of LHC data t...

Mehlhase, S; The ATLAS collaboration; Leffhalm, K

2010-01-01T23:59:59.000Z

47

1 The German National Analysis Facility as a tool for ATLAS analyses  

E-Print Network (OSTI)

In 2008 the German National Analysis Facility (NAF) at DESY was established. It is attached to and builds on top of DESY Grid infrastructure. The facility is designed to provide the best possible analysis infrastructure for high energy particle physics of the ATLAS, CMS, LHCb and ILC experiments. The Grid and local infrastructure of the NAF is reviewed with a focus on the ATLAS part. Both parts include large scale storage and a batch system. Emphasis is put on ATLAS specific customisation and utilisation of the NAF. This refers not only to the NAF components but also to the di erent components of the ATLAS analysis framework. Experience from operating and supporting ATLAS users on the NAF is presented in this paper. The ATLAS usage of the di erent components are shown including some typical use cases of user analysis. Finally, the question is addressed, if the design of the NAF meets the ATLAS expectations for effcient data analysis in the era of LHC data taking.

Mehlhase, S; The ATLAS collaboration; Leffhalm, K

2011-01-01T23:59:59.000Z

48

On the Fatigue Analysis of Wind Turbines  

DOE Green Energy (OSTI)

Modern wind turbines are fatigue critical machines that are typically used to produce electrical power from the wind. Operational experiences with these large rotating machines indicated that their components (primarily blades and blade joints) were failing at unexpectedly high rates, which led the wind turbine community to develop fatigue analysis capabilities for wind turbines. Our ability to analyze the fatigue behavior of wind turbine components has matured to the point that the prediction of service lifetime is becoming an essential part of the design process. In this review paper, I summarize the technology and describe the ''best practices'' for the fatigue analysis of a wind turbine component. The paper focuses on U.S. technology, but cites European references that provide important insights into the fatigue analysis of wind turbines.

Sutherland, Herbert J.

1999-06-01T23:59:59.000Z

49

Energy Analysis Department Analyzing the Effects of Temporal Wind Patterns  

E-Print Network (OSTI)

Energy Analysis Department Analyzing the Effects of Temporal Wind Patterns on the Value of Wind;Methods Summary Energy Analysis Department Wind Speed Data ­ TrueWind modeled wind-speed estimates (main;Summary of Key Findings (1) Energy Analysis Department Temporal patterns of wind production have

50

DOE Hydrogen Analysis Repository: Wind Power Integration  

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

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

51

NREL: Wind Research - Design Review and Analysis  

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

Computer-Aided Engineering Systems Engineering Controls Analysis Testing Utility Grid Integration Assessment Wind Resource Assessment Projects Facilities Research Staff Working...

52

Environmental Energy Technologies Division Energy Analysis Department Community Wind Power  

E-Print Network (OSTI)

Environmental Energy Technologies Division · Energy Analysis Department Community Wind Power projects * standard US commercial wind development #12;Environmental Energy Technologies Division · Energy % Community- Owned Community- Owned Wind Capacity (MW) Total Wind Capacity (MW) #12;Environmental Energy

53

Wind Project Financing Structures: A Review & Comparative Analysis  

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

Wind Project Financing Structures: A Review & Comparative Analysis Title Wind Project Financing Structures: A Review & Comparative Analysis Publication Type Report Year of...

54

A wind farm balancing analysis  

Science Conference Proceedings (OSTI)

Presently, the wind energy utilization devices approach is changed from individual isolated equipments, designated to a singular application, to compel wind farms connected to the electrical network. Supported by a favorable legal frame, they become ... Keywords: components balance, simulation and modeling, transfer functions

Mircea Grigoriu; Marius Constantin Popescu; Luminita Georgeta Popescu; Doina Cornelia Dinu; Cristinel Popescu

2010-02-01T23:59:59.000Z

55

Wind resource analysis. Annual report  

SciTech Connect

FY78 results of the Wind Resource Analyses task of the ERAB are described. Initial steps were taken to acquire modern atmosphere models of near-surface wind flow and primary data sets used in previous studies of national and regional wind resources. Because numerous assumptions are necessary to interpret available data in terms of wind energy potential, conclusions of previous studies differ considerably. These data analyses may be improved by future SERI research. State-of-the-art atmosphere models are a necessary component of the SERI wind resource analyses capacity. However, these methods also need to be tested and verified in diverse applications. The primary data sets and principal features of the models are discussed.

Hardy, D. M.

1978-12-01T23:59:59.000Z

56

Power quality analysis of wind generator connected to the weak grid during low wind speed  

Science Conference Proceedings (OSTI)

Power quality analysis based on measurements performed on wind generator during low wind speed is presented in the paper. Wind generator is connected via 10 kV cable to the distribution network, where grid is weak with low value of short-circuit power. ... Keywords: distribution network, harmonics, power quality, wind speed, wind turbine

Aleksandar Nikolic; Branka Kostic; Maja Markovic; Sasa Minic; Srdjan Milosavljevic

2011-07-01T23:59:59.000Z

57

Advanced Coal Wind Hybrid: Economic Analysis  

E-Print Network (OSTI)

DOE, 2007. 20 Percent Wind by 2030. Supporting Analysis,price forecast during 2012-2030. This approach assumes thatfutures prices during 2012-2030 will be the same as that

Phadke, Amol

2008-01-01T23:59:59.000Z

58

Advanced Coal Wind Hybrid: Economic Analysis  

E-Print Network (OSTI)

Coal prices have been far less volatile than natural gas prices.Coal Prices Figure 9 is similar to Figure 8 except the natural gas pricesCoal Wind Hybrid: Economic Analysis interested in natural gas prices

Phadke, Amol

2008-01-01T23:59:59.000Z

59

Application of Radar Wind Observations for Low-Level NWP Wind Forecast Validation  

Science Conference Proceedings (OSTI)

The Finnish Meteorological Institute has produced a new numerical weather prediction modelbased wind atlas of Finland. The wind atlas provides information on local wind conditions in terms of annual and monthly wind speed and direction averages. ...

Kirsti Salonen; Sami Niemel; Carl Fortelius

2011-06-01T23:59:59.000Z

60

Loads Analysis of Several Offshore Floating Wind Turbine Concepts  

SciTech Connect

This paper presents a comprehensive dynamic-response analysis of six offshore floating wind turbine concepts.

Robertson, A. N.; Jonkman, J. M.

2011-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "wind atlas analysis" 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

Numerical Simulation of the Irish Wind Climate and Comparison with Wind  

Open Energy Info (EERE)

Numerical Simulation of the Irish Wind Climate and Comparison with Wind Numerical Simulation of the Irish Wind Climate and Comparison with Wind Atlas Data Dataset Summary Description (Abstract): The wind climate of Ireland has been calculated using the Karlsruhe Atmospheric Mesoscale Model KAMM using the statistical-dynamical method. The large-scale climatology is represented by 65 classes of geostropic wind. From the frequency of the classes and the simulations the climatology of the surface wind is determined. The simulated winds are processed similar to observed data to obtain LIB-files for the Wind Atlas Analysis and Application Program WAsP. Comparisons are made with mast observations which have been analyzed by WAsP. Sites with high wind power potential are well predicted. Stations with low power are over predicted. (Purpose): Article describing an example of a KAMM

62

Distributed analysis functional testing using GangaRobot in the ATLAS experiment  

E-Print Network (OSTI)

Automated distributed analysis tests are necessary to ensure smooth operations of the ATLAS grid resources. In this work we present the recent developments of the ATLAS GangaRobot, a tool designed to perform regular tests of all grid sites by running arbitrary user applications with varied configurations at predifined time intervals. Specifically the GangaRobot creates and submits several real ATLAS user applications to the various grid sites using the distributed analysis framework GANGA, a front end for easy grid job definition and management. Success or failure rates of these test jobs are individually monitored. Test definitions and results are stored in a database and made available to users and site administrators through a web interface, the ATLAS Site Status Board (SSB) and the Service Availability Monitor (SAM). The test results provide on the one hand a fast way to to identify systematic or temporary site problems, and on the other hand allow for an effective distribution of the workload on the avai...

Legger, F; The ATLAS collaboration; Elmsheuser, J; Ubeda Garca, M; Gordon, A W; Jha, M K; Van der Ster, D C

2010-01-01T23:59:59.000Z

63

Error analysis in wind turbine field testing  

DOE Green Energy (OSTI)

In wind turbine field testing, one of the most important issues is understanding and accounting for data errors. Extended dynamic testing of wind turbines requires a thorough uncertainty analysis and a regimen of quality assurance steps in order to preserve accuracy. Test objectives need to be identified to determine the accuracy requirements of any data measurement, collection, and analysis process. Frequently, the uncertainty analysis reveals that the major sources of error can be allowed for with careful calibration and signal drift tracking procedures. This paper offers a basis for the discussion and development of a repeatable and accurate process to track errors and account for them in data processing.

McNiff, B [McNiff Light Industries, Carlisle, MA (United States); Simms, D [National Renewable Energy Lab., Golden, CO (United States)

1994-08-01T23:59:59.000Z

64

The Answer Is Blowing in the Wind: Analysis of Powering Internet Data Centers with Wind Energy  

E-Print Network (OSTI)

The Answer Is Blowing in the Wind: Analysis of Powering Internet Data Centers with Wind Energy Yan. As a result, many IDC operators have started using renewable energy, e.g., wind power, to power their data centers. Unfortunately, the utilization of wind energy has stayed at a low ratio due to the intermittent

65

ATLAS: A Small, Light Weight, Time-Synchronized Wind-Turbine Data Acquistion System  

DOE Green Energy (OSTI)

Wind energy researchers at Sandia National Laboratories have developed a small, lightweight, time- synchronized, robust data acquisition system to acquire long-term time-series data on a wind turbine rotor. A commercial data acquisition module is utilized to acquire data simultaneously from multip!e strain-gauge, analog, and digital channels. Acquisition of rotor data at precisely the same times as acquisition of ground data is ensured by slaving the acquisition clocks on the rotor- based data unit and ground-based units to the Global Positioning Satellite (GPS) system with commercial GPS receiver units and custom-built and programmed programmable logic devices. The acquisition clocks will remain synchronized within two microseconds indefinitely. Field tests have confirmed that synchronization can be maintained at rotation rates in excess of 350 rpm, Commercial spread-spectrum radio modems are used to transfer the rotor data to a ground- based computer concurrently with data acquisition, permitting continuous acquisition of data over a period of several hours, days or even weeks.

Berg, D.E.; Robertson, P.; Zayas, J.

1998-11-09T23:59:59.000Z

66

Advanced Coal Wind Hybrid: Economic Analysis  

E-Print Network (OSTI)

feasibility of combining wind farms with advanced coalfeasibility of combining wind farms with advanced coal

Phadke, Amol

2008-01-01T23:59:59.000Z

67

Ex Post Analysis of Economic Impacts from Wind Power Development...  

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

Ex Post Analysis of Economic Impacts from Wind Power Development in U.S. Counties Title Ex Post Analysis of Economic Impacts from Wind Power Development in U.S. Counties...

68

Advanced Coal Wind Hybrid: Economic Analysis  

E-Print Network (OSTI)

Figure 12. Effect of Wind Integration and Resource Adequacy62 Table E-2. Estimates of Wind IntegrationAugust. Utility Wind Integration Group (UWIG), 2006.

Phadke, Amol

2008-01-01T23:59:59.000Z

69

Advanced Coal Wind Hybrid: Economic Analysis  

E-Print Network (OSTI)

of Figures Figure ES-1. Advanced Coal Wind Hybrid: Basicviii Figure 1. Advanced-Coal Wind Hybrid: Basic21 Figure 6. Comparison of ACWH and CCGT-Wind

Phadke, Amol

2008-01-01T23:59:59.000Z

70

Wavelet Analysis for Wind Fields Estimation  

E-Print Network (OSTI)

resource assessment and wind farm development in the UK. Inevaluation of oil spills and wind farms. Keywords: SAR; Winddata to characterize wind farms and their potential energy

Leite, Gladeston C.

2013-01-01T23:59:59.000Z

71

NREL: Renewable Resource Data Center - Wind Resource Information  

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

Wind Resource Information Wind Resource Information Photo of five wind turbines at the Nine Canyon Wind Project. The Nine Canyon Wind Project in Benton County, Washington, includes 37 wind turbines and 48 MW of capacity. Detailed wind resource information can be found on NREL's Wind Research Web site. This site provides access to state and international wind resource maps. Wind Integration Datasets are provided to help energy professionals perform wind integration studies and estimate power production from hypothetical wind plants. In addition, RReDC offers Meteorological Field Measurements at Potential and Actual Wind Turbine Sites and a Wind Energy Resource Atlas of the United States. Wind resource maps are also available from the NREL Dynamic Maps, GIS Data, and Analysis Tools Web site.

72

Dashboard Task Monitor for managing ATLAS user analysis on the Grid  

E-Print Network (OSTI)

The organization of the distributed user analysis on the Worldwide LHC Computing Grid (WLCG) infrastructure is one of the most challenging tasks among the computing activities at the Large Hadron Collider. The Experiment Dashboard offers a solution that not only monitors but also manages (kill, resubmit) user tasks and jobs via a web interface. The ATLAS Dashboard Task Monitor provides analysis users with a tool that is independent of the operating system and GRID environment . This contribution describes the functionality of the application and its implementation details, in particular authentication, authorization and audit of the management operations.

Sargsyan, L; The ATLAS collaboration; Jha, M; Karavakis, E; Kokoszkiewicz, L; Saiz, P; Schovancova, J; Tuckett, D

2013-01-01T23:59:59.000Z

73

Dashboard Task Monitor for managing ATLAS user analysis on the Grid  

E-Print Network (OSTI)

The organization of the distributed user analysis on the Worldwide LHC Computing Grid (WLCG) infrastructure is one of the most challenging tasks among the computing activities at the Large Hadron Collider. The Experiment Dashboard offers a solution that not only monitors but also manages (kill, resubmit) user tasks and jobs via a web interface. The ATLAS Dashboard Task Monitor provides analysis users with a tool that is operating system and GRID environment independent. This contribution describes the functionality of the application and its implementation details, in particular authentication, authorization and audit of the management operations.

Sargsyan, L; The ATLAS collaboration; Jha, M; Karavakis, E; Kokoszkiewicz, L; Saiz, P; Schovancova, J; Tuckett, D

2013-01-01T23:59:59.000Z

74

Advanced Coal Wind Hybrid: Economic Analysis  

SciTech Connect

Growing concern over climate change is prompting new thinking about the technologies used to generate electricity. In the future, it is possible that new government policies on greenhouse gas emissions may favor electric generation technology options that release zero or low levels of carbon emissions. The Western U.S. has abundant wind and coal resources. In a world with carbon constraints, the future of coal for new electrical generation is likely to depend on the development and successful application of new clean coal technologies with near zero carbon emissions. This scoping study explores the economic and technical feasibility of combining wind farms with advanced coal generation facilities and operating them as a single generation complex in the Western US. The key questions examined are whether an advanced coal-wind hybrid (ACWH) facility provides sufficient advantages through improvements to the utilization of transmission lines and the capability to firm up variable wind generation for delivery to load centers to compete effectively with other supply-side alternatives in terms of project economics and emissions footprint. The study was conducted by an Analysis Team that consists of staff from the Lawrence Berkeley National Laboratory (LBNL), National Energy Technology Laboratory (NETL), National Renewable Energy Laboratory (NREL), and Western Interstate Energy Board (WIEB). We conducted a screening level analysis of the economic competitiveness and technical feasibility of ACWH generation options located in Wyoming that would supply electricity to load centers in California, Arizona or Nevada. Figure ES-1 is a simple stylized representation of the configuration of the ACWH options. The ACWH consists of a 3,000 MW coal gasification combined cycle power plant equipped with carbon capture and sequestration (G+CC+CCS plant), a fuel production or syngas storage facility, and a 1,500 MW wind plant. The ACWH project is connected to load centers by a 3,000 MW transmission line. In the G+CC+CCS plant, coal is gasified into syngas and CO{sub 2} (which is captured). The syngas is burned in the combined cycle plant to produce electricity. The ACWH facility is operated in such a way that the transmission line is always utilized at its full capacity by backing down the combined cycle (CC) power generation units to accommodate wind generation. Operating the ACWH facility in this manner results in a constant power delivery of 3,000 MW to the load centers, in effect firming-up the wind generation at the project site.

Phadke, Amol; Goldman, Charles; Larson, Doug; Carr, Tom; Rath, Larry; Balash, Peter; Yih-Huei, Wan

2008-11-28T23:59:59.000Z

75

Uncertainty and Intercalibration Analysis of H*Wind  

Science Conference Proceedings (OSTI)

The Hurricane Research Division (HRD) Real-time Hurricane Wind Analysis System (H*Wind) is a software application used by NOAAs HRD to create a gridded tropical cyclone wind analysis based on a wide range of observations. These analyses are used ...

Steven M. DiNapoli; Mark A. Bourassa; Mark D. Powell

2012-06-01T23:59:59.000Z

76

Wind flow modeling for wind energy analysis of the Nellis Dunes area in Nevada.  

E-Print Network (OSTI)

??A wind energy analysis of the Nellis Dunes area in Nevada was conducted. A DEM file which contains the elevation data was used to generate (more)

Rangegowda, Upendra

2010-01-01T23:59:59.000Z

77

Wavelet Analysis for Wind Fields Estimation  

E-Print Network (OSTI)

W. ; Feser, F. Relationship between SAR-derived wind vectorsand wind at 10- m height represented by a meososcale model.Yijun, H. Comparison of two wind algorithms of ENVISAT ASAR

Leite, Gladeston C.

2013-01-01T23:59:59.000Z

78

Advanced Coal Wind Hybrid: Economic Analysis  

E-Print Network (OSTI)

2008. Annual Report on US Wind Power Installation, Cost,Feed Sequestration Site Wind Power Figure ES-1. AdvancedFeed Sequestration Site Wind Power Figure 1. Advanced-Coal

Phadke, Amol

2008-01-01T23:59:59.000Z

79

Advanced Coal Wind Hybrid: Economic Analysis  

E-Print Network (OSTI)

of Figures Figure ES-1. Advanced Coal Wind Hybrid: Basicviii Figure 1. Advanced-Coal Wind Hybrid: Basic29 Figure 9. Sensitivity to Coal

Phadke, Amol

2008-01-01T23:59:59.000Z

80

Using Solid State Disk Array as a Cache for LHC ATLAS Data Analysis  

E-Print Network (OSTI)

User data analysis in high energy physics presents a challenge to spinning-disk based storage systems. The analysis is data intense, yet reads are small, sparse and cover a large volume of data files. It is also unpredictable due to users' response to storage performance. We describe here a system with an array of Solid State Disk as a non-conventional, standalone file level cache in front of the spinning disk storage to help improve the performance of LHC ATLAS user analysis at SLAC. The system uses a long period of data access records to make caching decisions. It can also use information from other sources such as a work-flow management system. We evaluate the performance of the system both in terms of caching and its impact on user analysis jobs. The system currently uses Xrootd technology, but the technique can be applied to any storage system.

Yang, W; The ATLAS collaboration; Mount, R

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "wind atlas analysis" 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

Numerical Simulation of the Irish Wind Climate and Comparison...  

Open Energy Info (EERE)

Numerical Simulation of the Irish Wind Climate and Comparison with Wind Atlas Data

(Abstract):The wind climate of Ireland has been calculated using the...

82

REGIONAL-SCALE WIND FIELD CLASSIFICATION EMPLOYING CLUSTER ANALYSIS  

DOE Green Energy (OSTI)

The classification of time-varying multivariate regional-scale wind fields at a specific location can assist event planning as well as consequence and risk analysis. Further, wind field classification involves data transformation and inference techniques that effectively characterize stochastic wind field variation. Such a classification scheme is potentially useful for addressing overall atmospheric transport uncertainty and meteorological parameter sensitivity issues. Different methods to classify wind fields over a location include the principal component analysis of wind data (e.g., Hardy and Walton, 1978) and the use of cluster analysis for wind data (e.g., Green et al., 1992; Kaufmann and Weber, 1996). The goal of this study is to use a clustering method to classify the winds of a gridded data set, i.e, from meteorological simulations generated by a forecast model.

Glascoe, L G; Glaser, R E; Chin, H S; Loosmore, G A

2004-06-17T23:59:59.000Z

83

The Monitoring and Calibration Web Systems for the ATLAS Tile Calorimeter Data Quality Analysis  

E-Print Network (OSTI)

The Tile Calorimeter (TileCal) is one of the ATLAS sub-detectors. The read-out is performed by about 10,000 PhotoMultiplier Tubes (PMTs). The signal of each PMT is digitized by an electronic channel. The Monitoring and Calibration Web System (MCWS) supports the data quality analysis of the electronic channels. This application was developed to assess the detector status and verify its performance. It can provide to the user the list of TileCal known problematic channels, that is stored in the ATLAS condition database (COOL DB). The bad channels list guides the data quality validator in identifying new problematic channels and is used in data reconstruction and the system allows to update the channels list directly in the COOL database. MCWS can generate summary results, such as eta-phi plots and comparative tables of the masked channels percentage. Regularly, during the LHC (Large Hadron Collider) shutdown a maintenance of the detector equipments is performed. When a channel is repaired, its calibration const...

Sivolella, A; Ferreira, F

2012-01-01T23:59:59.000Z

84

Distributed Wind Site Analysis Tool (DSAT) | Open Energy Information  

Open Energy Info (EERE)

Distributed Wind Site Analysis Tool (DSAT) Distributed Wind Site Analysis Tool (DSAT) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Distributed Wind Site Analysis Tool (DSAT) Focus Area: Renewable Energy Topics: Opportunity Assessment & Screening Website: dsat.cadmusgroup.com/Default.aspx Equivalent URI: cleanenergysolutions.org/content/distributed-wind-site-analysis-tool-d Language: English Policies: Deployment Programs DeploymentPrograms: Technical Assistance The Distributed Wind Site Analysis Tool (DSAT) is a powerful online tool for conducting detailed site assessments for single turbine projects, from residential to community scale. The tool offers users the ability to analyse potential wind turbine installment projects based on the type of turbine being installed, the terrain of the installment site, and the

85

UWIG Distributed Wind Impacts Analysis Tool Progress Report: Utility Wind Interest Group Distributed Wind Impacts Project  

Science Conference Proceedings (OSTI)

Distributed wind generation systems consist of small clusters of wind turbines located near small load centers and connected directly to the distribution system. Depending on the electrical characteristics of the distribution line, the type of wind turbine, and the relative locations of the interconnection to the distribution system, the substation, and customer connections, distributed wind generation can significantly affect the stability, power quality, and operations of the distribution line. As a re...

2004-03-29T23:59:59.000Z

86

Advanced Coal Wind Hybrid: Economic Analysis  

E-Print Network (OSTI)

Wind Power Installation, Cost, and Performance Trend: 2007 Office of Renewable Energycost of the additional capacity required to make the capacity contributions per unit of energy produced by wind

Phadke, Amol

2008-01-01T23:59:59.000Z

87

Wind turbine data acquisition and analysis system  

DOE Green Energy (OSTI)

Under Department of Energy (DOE) sponsorship, Sandia Laboratories has implemented a program to develop vertical-axis wind turbine (VAWT) systems. One aspect of this program has been the development of an instrumented test site adjacent to Sandia Laboratories' Technical Area I on Kirtland Air Force Base. Three VAWTs are now in operation on this test site. This paper describes the data acquisition and analyses system developed to meet the needs of the VAWT test site. The system employs a 16-bit work-length minicomputer as the major element in a stand-alone configuration. A variety of peripheral devices perform the required data acquisition functions and provide for data display and analysis. Included is a disk-based software operating system that supports a mass storage-file system, high-level language, and auxiliary software procedures.

Stiefeld, B.

1978-07-01T23:59:59.000Z

88

Multivariate analysis and prediction of wind turbine response to varying wind field characteristics based on machine learning  

E-Print Network (OSTI)

Multivariate analysis and prediction of wind turbine response to varying wind field characteristics characteristics have a significant impact on the structural response and the lifespan of wind turbines. This paper presents a machine learning approach towards analyzing and predicting the response of wind turbine

Stanford University

89

Review of wind simulation methods for horizontal-axis wind turbine analysis  

DOE Green Energy (OSTI)

This report reviews three reports on simulation of winds for use in wind turbine fatigue analysis. The three reports are presumed to represent the state of the art. The Purdue and Sandia methods simulate correlated wind data at two points rotating as on the rotor of a horizontal-axis wind turbine. The PNL method at present simulates only one point, which rotates either as on a horizontal-axis wind turbine blade or as on a vertical-axis wind turbine blade. The spectra of simulated data are presented from the Sandia and PNL models under comparable input conditions, and the energy calculated in the rotational spikes in the spectra by the two models is compared. Although agreement between the two methods is not impressive at this time, improvement of the Sandia and PNL methods is recommended as the best way to advance the state of the art. Physical deficiencies of the models are cited in the report and technical recommendations are made for improvement. The report also reviews two general methods for simulating single-point data, called the harmonic method and the white noise method. The harmonic method, which is the basis of all three specific methods reviewed, is recommended over the white noise method in simulating winds for wind turbine analysis.

Powell, D.C.; Connell, J.R.

1986-06-01T23:59:59.000Z

90

Advanced Coal Wind Hybrid: Economic Analysis  

E-Print Network (OSTI)

IGCC PC advanced coal-wind hybrid combined cycle power plantnatural gas combined cycle gas turbine power plant carboncrude gasification combined cycle power plant with carbon

Phadke, Amol

2008-01-01T23:59:59.000Z

91

NREL: Wind Research - Systems and Controls Analysis  

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

Advanced Research Turbines (CARTs). NWTC researchers are also studying blade pitch and generator torque, and employing advanced sensors to optimize power capture and reduce wind...

92

Time-domain Fatigue Response and Reliability Analysis of Offshore Wind Turbines with  

E-Print Network (OSTI)

-domain based simulation model of 750 kW land-based wind turbine Gear contact fatigue analysis of a wind of 750 kW land-based wind turbine Gear contact fatigue analysis of a wind turbine drive train under response and reliability analysis #12;Time domain based simulation model of 750 kW land-based wind turbine

Nørvåg, Kjetil

93

Analysis of Offshore Wind Energy Leasing Areas for the Rhode Island/Massachusetts Wind Energy Area  

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

Analysis of Offshore Wind Analysis of Offshore Wind Energy Leasing Areas for the Rhode Island/Massachusetts Wind Energy Area W. Musial, D. Elliott, J. Fields, Z. Parker, and G. Scott Produced under direction of the Bureau of Ocean Energy Management (BOEM) by the National Renewable Energy Laboratory (NREL) under Interagency Agreement M13PG00002 and Task No WFS3.1000. Technical Report NREL/TP-5000-58091 April 2013 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Contract No. DE-AC36-08GO28308 National Renewable Energy Laboratory 15013 Denver West Parkway Golden, CO 80401 303-275-3000 * www.nrel.gov Analysis of Offshore Wind

94

Wind energy mission analysis. Final report. [USA  

DOE Green Energy (OSTI)

The development of wind energy systems in the U.S. is discussed under the following headings: baseline power systems; assessment of wind potential; identification of high potential applications; electric utilities; residential application; paper industry application; agriculture application; and remote community applications.

Not Available

1977-02-18T23:59:59.000Z

95

Analysis of Long Time Series of Coastal Wind  

Science Conference Proceedings (OSTI)

A study of a 14-yr time series of wind speed recorded on the coast outside the city of Trondheim in middle Norway is presented. Analysis of the time series shows that in this area there is, in general, no gap in the wind speed power spectrum in ...

Tore Heggem; Rune Lende; Jrgen Lvseth

1998-09-01T23:59:59.000Z

96

Simulation of wind-speed time series for wind-energy conversion analysis.  

DOE Green Energy (OSTI)

In order to investigate operating characteristics of a wind energy conversion system it is often desirable to have a sequential record of wind speeds. Sometimes a long enough actual data record is not available at the time an analysis is needed. This may be the case if, e.g., data are recorded three times a day at a candidate wind turbine site, and then the hourly performance of generated power is desired. In such cases it is often possible to use statistical characteristics of the wind speed data to calibrate a stochastic model and then generate a simulated wind speed time series. Any length of record may be simulated by this method, and desired system characteristics may be studied. A simple wind speed simulation model, WEISIM, is developed based on the Weibull probability distribution for wind speeds with a correction based on the lag-one autocorrelation value. The model can simulate at rates from one a second to one an hour, and wind speeds can represent short-term averages (e.g., 1-sec averages) or longer-term averages (e.g., 1-min or 1 hr averages). The validity of the model is verified with PNL data for both histogram characteristics and persistance characteristics.

Corotis, R.B.

1982-06-01T23:59:59.000Z

97

Analysis of wind power for battery charging  

DOE Green Energy (OSTI)

One type of wind-powered battery charging will be explored in this paper. It consists of a wind turbine driving a permanent magnet alternator and operates at variable speed. The alternator is connected to a battery bank via a rectifier. The characteristic of the system depends on the wind turbine, the alternator, and the system configuration. If the electrical load does not match the wind turbine, the performance of the system will be degraded. By matching the electrical load to the wind turbine, the system can be improved significantly. This paper analyzes the properties of the system components. The effects of parameter variation and the system configuration on the system performance are investigated. Two basic methods of shaping the torque-speed characteristic of the generator are presented. The uncompensated as well as the compensated systems will be discussed. Control strategies to improve the system performance will be explored. Finally, a summary of the paper will be presented in the last section.

Muljadi, E.; Drouilhet, S.; Holz, R. [National Renewable Energy Lab., Golden, CO (United States); Gevorgian, V. [University of Armenia, Yerevan (Armenia). State Engineering

1995-11-01T23:59:59.000Z

98

Analysis of wind power for battery charging  

Science Conference Proceedings (OSTI)

One type of wind-powered battery charging is explored which consists of a wind turbine driving a permanent magnet alternator and which operates at variable speed. The alternator is connected to a battery bank via a rectifier. The characteristics of the system depend on the wind turbine, the alternator, and the system configuration. If the electrical load does not match the wind turbine, the performance of the system will be degraded. By matching the electrical load to the wind turbine, the system can be improved significantly. This paper analyzes the properties of the system components. The effects of parameter variation and the system configuration on the system performance are investigated. Two basic methods of shaping the torque-speed characteristic of the generator are presented. The uncompensated as well as the compensated systems are discussed. Control strategies to improve the system performance are explored.

Muljadi, E.; Drouilhet, S.; Holz, R.; Gevorgian, V.

1995-01-01T23:59:59.000Z

99

Commissioning and early physics analysis with the ATLAS and CMS experiments  

E-Print Network (OSTI)

These lecture notes for graduate students and young postdocs introduce the commissioning and early physics programme of the high-transverse-momentum experiments ATLAS and CMS, operating at the Large Hadron Collider (LHC) at CERN.

Andreas Hoecker

2010-02-15T23:59:59.000Z

100

Argonne Physics Division - ATLAS  

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

Stable Beams Radioactive Beams CARIBU Beams Workshop Reports ATLAS Strategic Plan (2009) CARIBU Proposal Dear ATLAS User, This is the third message regarding the ATLAS...

Note: This page contains sample records for the topic "wind atlas analysis" 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

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

E-Print Network (OSTI)

Towards the Development of Wind Farms in Australia. JournalEconomic Analysis of a Wind Farm in Nantucket Sound. Beaconabout Wind Turbines and Wind Farms. Wind Engineering. 13(4):

Hoen, Ben

2010-01-01T23:59:59.000Z

102

Error Estimates for Ocean Surface Winds: Applying Desroziers Diagnostics to the Cross-Calibrated, Multiplatform Analysis of Wind Speed  

Science Conference Proceedings (OSTI)

The Desroziers diagnostics (DD) are applied to the cross-calibrated, multi-platform (CCMP) ocean surface wind data sets to estimate wind speed errors of the ECMWF background, the microwave satellite observations and the resulting CCMP analysis. ...

Ross N. Hoffman; Joseph V. Ardizzone; S. Mark Leidner; Deborah K. Smith; Robert Atlas

103

An Algorithm for Retrieving Vertical Wind Profiles from Satellite-Observed Winds over the Indian Ocean Using Complex EOF Analysis  

Science Conference Proceedings (OSTI)

With an aim to exploit current satellite observations for determining vertical wind profiles, the authors have carried out a complex empirical orthogonal function (CEOF) analysis of a large number of radiosonde observations of wind fields over ...

C. M. Kishtawal; Sujit Basu; F. C. Pandey

1996-04-01T23:59:59.000Z

104

Advanced Coal Wind Hybrid: Economic Analysis  

E-Print Network (OSTI)

Advanced Coal-Wind Non-Hybrid SNG IGCC+CCS PC CCGT Windor a synthetic natural gas (SNG) production facility) and anwithout Fuel With with SNG Production or Syncrude Production

Phadke, Amol

2008-01-01T23:59:59.000Z

105

Advanced Coal Wind Hybrid: Economic Analysis  

E-Print Network (OSTI)

generation. Given the capital intensity of the ACWH option,plant. Given the capital intensity of the G+CC+CCS plant, itoption even though the capital intensity of wind generation

Phadke, Amol

2008-01-01T23:59:59.000Z

106

Visibility graph analysis of solar wind velocity  

E-Print Network (OSTI)

We analyze in situ measurements of solar wind velocity obtained by Advanced Composition Explorer (ACE) spacecraft and Helios spacecraft during the years 1998-2012 and 1975-1983 respectively. The data belong to mainly solar cycle 23 (1996-2008) and solar cycle 21 (1976-1986) respectively. We use Directed Horizontal Visibility graph (DHVg) algorithm and estimate a graph functional, namely, the degree distance (D) as the Kullback-Leibler divergence (KLD) argument to understand time irreversibility of solar wind time series. We estimate this degree distance irreversibility parameter for these time series at different phases of solar activity cycle. Irreversibility parameter is first established for known dynamical data and then applied for solar wind velocity time series. It is observed that irreversibility in solar wind velocity fluctuations show similar behaviour at 0.3 AU (Helios data) and 1 AU (ACE data). Moreover it changes over the different phases of solar activity cycle.

Suyal, Vinita; Singh, Harinder P

2013-01-01T23:59:59.000Z

107

Energy Analysis of Convectively Induced Wind Perturbations  

Science Conference Proceedings (OSTI)

Budgets of divergent and rotational components of kinetic energy (KD and KR) are examined for four upper level wind speed maxima that develop during the fourth Atmospheric Variability Experiment (AVE IV) and the first AVE-Severe Environmental ...

Henry E. Fuelberg; Dennis E. Buechler

1989-04-01T23:59:59.000Z

108

Initial Economic Analysis of Utility-scale Wind Integration in...  

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

by the Alliance for Sustainable Energy, LLC. INITIAL ECONOMIC ANALYSIS OF UTILITY-SCALE WIND INTEGRATION IN HAWAII NOTICE This report was prepared as an account of work sponsored...

109

Model and Seismic Analysis of Large-scale Wind Turbine Tower Structure  

Science Conference Proceedings (OSTI)

The working condition of wind turbine tower structure with a massive engine room and revolving wind wheels is very complex. The paper simplify the wind turbine tower model with finite element analysis software --ANSYS, completed modal analysis firstly, ... Keywords: wind turbine tower, model analysis, resonance, time-history analysis, dynamic

Xiang Liu; Jiangtao Kong

2012-05-01T23:59:59.000Z

110

arcControlTower: the System for Atlas Production and Analysis on ARC  

E-Print Network (OSTI)

PanDA, the Atlas management and distribution system for production and analysis jobs on EGEE and OSG clusters, is based on pilot jobs to increase the throughput and stability of the job execution on grid. The ARC middleware uses specific approach which tightly connects the job requirements with cluster capabilities like resource usage, software availability and caching of input files. The pilot concept renders the ARC features useless. The arcControlTower is the job submission system which merges the pilot benefits and ARC advantages. It takes the pilot payload from the panda server and submits the jobs to the Nordugrid ARC clusters as regular jobs, with all the job resources known in advance. All the pilot communication with the PanDA server is done by the arcControlTower, so it plays the role of a pilot factory and the pilot itself. There are several advantages to this approach: no grid middleware is needed on the worker nodes, the fair-share between the production and user jobs is tuned with the arcControl...

Filipcic, A; The ATLAS collaboration

2011-01-01T23:59:59.000Z

111

arcControlTower, the System for Atlas Production and Analysis on ARC  

E-Print Network (OSTI)

Abstract content Panda, the Atlas management and distribution system for production and analysis jobs on EGEE and OSG clusters, is based on pilot jobs to increase the throughput and stability of the job execution on grid. The ARC middleware uses specific approach which tightly connects the job requirements with cluster capabilities like resource usage, software availability and caching of input files. The pilot concept renders the ARC features useless. The arcControlTower is the job submission system which merges the pilot benefits and ARC advantages. It takes the pilot payload from the panda server and submits the jobs to the Nordugrid ARC clusters as regular jobs, with all the resources known in advance. All the pilot communication with the panda server is done by the arcControlTower, so it plays the role of a pilot factory and the pilot itself. There are several advantages to this approach: no grid middleware is needed on the worker nodes, the fair-share between the production and user jobs is tuned with t...

Filipcic, A; The ATLAS collaboration

2010-01-01T23:59:59.000Z

112

Sensitivity Analysis of Offshore Wind Cost of Energy (Poster)  

DOE Green Energy (OSTI)

No matter the source, offshore wind energy plant cost estimates are significantly higher than for land-based projects. For instance, a National Renewable Energy Laboratory (NREL) review on the 2010 cost of wind energy found baseline cost estimates for onshore wind energy systems to be 71 dollars per megawatt-hour ($/MWh), versus 225 $/MWh for offshore systems. There are many ways that innovation can be used to reduce the high costs of offshore wind energy. However, the use of such innovation impacts the cost of energy because of the highly coupled nature of the system. For example, the deployment of multimegawatt turbines can reduce the number of turbines, thereby reducing the operation and maintenance (O&M) costs associated with vessel acquisition and use. On the other hand, larger turbines may require more specialized vessels and infrastructure to perform the same operations, which could result in higher costs. To better understand the full impact of a design decision on offshore wind energy system performance and cost, a system analysis approach is needed. In 2011-2012, NREL began development of a wind energy systems engineering software tool to support offshore wind energy system analysis. The tool combines engineering and cost models to represent an entire offshore wind energy plant and to perform system cost sensitivity analysis and optimization. Initial results were collected by applying the tool to conduct a sensitivity analysis on a baseline offshore wind energy system using 5-MW and 6-MW NREL reference turbines. Results included information on rotor diameter, hub height, power rating, and maximum allowable tip speeds.

Dykes, K.; Ning, A.; Graf, P.; Scott, G.; Damiami, R.; Hand, M.; Meadows, R.; Musial, W.; Moriarty, P.; Veers, P.

2012-10-01T23:59:59.000Z

113

Wind energy mission analysis. Executive summary. [USA  

DOE Green Energy (OSTI)

The principal objectives of this study were (1) to assess the potential for wind energy conversion systems on a national scale, (2) identify high-potential applications for WECS, (3) define functional, performance, operational, and cost goals for WECS, (4) evaluate the impact of the wide-scale deployment of WECS on energy users, and (5) identify the institutional and non-technical problems associated with the acceptance of wind energy systems. The study concentrated on broad applications of WECS over large geographic areas encompassing the entire United States. Emphasis was placed on identifying and exploring high-aggregate energy users who have significant potential to utilize wind energy in place of other alternatives.

Not Available

1977-02-18T23:59:59.000Z

114

A comparative analysis of business structures suitable for farmer-owned wind power projects in the United States  

E-Print Network (OSTI)

Support for Community Wind Power Development. LBNL-54715.Analysis of Community Wind Power Development Options inWhip Up Hopes for Wind Power Again. The Wall Street

Bolinger, Mark; Wiser, Ryan

2004-01-01T23:59:59.000Z

115

Atlas Tier 3  

E-Print Network (OSTI)

ATLAS has built a powerful system for computing activities on top of three major grid infrastructures. As expected, with data finally arriving physicists need dedicated resources for analysis activities. In contrast to the existing grid infrastructure, there is a strong need to provide users with data control and high-performance (quasi) interactive data access. The ATLAS Tier3 solution is targeted to provide efficient and manageable analysis computing at each member institution. For most of sites only a small fraction of a physicist or student can be diverted for computing support. Transformative technologies have been chosen and integrated with the existing ATLAS tools. The result is a site which is substantially simpler to maintain and which is essentially operated by client tools and extensive use of caching technologies. Most promising new technologies we are using are: xroot and Lustre (distributed storage); CVMFS (experiment software distribution and condition files). We believe that this experience ha...

Benjamin, D; The ATLAS collaboration

2010-01-01T23:59:59.000Z

116

NREL: Wind Research - Energy Analysis of Offshore Systems  

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

Energy Analysis of Offshore Systems Energy Analysis of Offshore Systems Chart of cost data for actual and projected offshore wind projects as reported by developers. Enlarge image NREL has a long history of successful research to understand and improve the cost of wind generation technology. As a research laboratory, NREL is a neutral, third party and can provide an unbiased perspective of methodologies and approaches used to estimate direct and indirect economic impacts of offshore wind. Market Analysis NREL's extensive research on installed and proposed projects in Europe, the United States, and other emerging offshore markets enables the compilation of a database of installed and proposed project costs. These are used to report on cost trends. Recent studies include: Analysis of capital cost trends for planned and installed offshore

117

Coupled dynamic analysis of floating offshore wind farms  

E-Print Network (OSTI)

During the past decade, the demand for clean renewable energy continues to rise drastically in Europe, the US, and other countries. Wind energy in the ocean can possibly be one of those future renewable clean energy sources as long it is economically feasible and technologically manageable. So far, most of the offshore wind farm research has been limited to fixed platforms in shallow-water areas. In the water depth deeper than 30m, however, floating-type wind farms tend to be more feasible. Then, the overall design and engineering becomes more complicated than fixed platforms including the coupled dynamics of platforms, mooring lines, and blades. In the present study, a numerical time-domain model has been developed for the fully coupled dynamic analysis of an offshore floating wind turbine system including blade-rotor dynamics and platform motions. As a test case, the TLP-type floater system with 3 blades of 70-m diameter designed by the National Renewable Energy Laboratory (NREL) is selected to analyze the dynamic coupling effects among floating system, mooring lines, and wind turbine. The performance of the selected system in a typical wind-wave-current condition has been simulated and analyzed. A similar study for the floater and rotor coupled dynamic analysis was conducted by MIT and NREL. However, in the present case, the dynamic coupling between platform and mooring lines are also considered in addition to the rotor-floater dynamic coupling. It is seen that the rotor-floater coupling effects increase with wind velocity and blade size. The increased coupling effects tend to increase the dynamic tension of TLP tethers. The developed technology and numerical tool are applicable to the new offshore floating wind farms planned in the future.

Shim, Sangyun

2007-12-01T23:59:59.000Z

118

Empirical Orthogonal Function Analysis of Wind Vectors over the Tropical Pacific Region  

Science Conference Proceedings (OSTI)

The method of empirical orthogonal function analysis is applied to wind stress vectors over the tropical Pacific Ocean from 1961 through 1978. It is determined that this vector analysis enables a more thorough analysis of wind components than do ...

David M. Legler

1983-03-01T23:59:59.000Z

119

NREL-Philippine Wind Farm Analysis and Site Selection Analysis...  

Open Energy Info (EERE)

National Renewable Energy Laboratory Sector: Energy Focus Area: Renewable Energy, Wind Topics: Co-benefits assessment, - Energy Access, Low emission development planning,...

120

Economic Analysis of Hydrogen Production from Wind: Preprint  

DOE Green Energy (OSTI)

The purpose of this analysis is to determine the cost of using wind energy to produce hydrogen for use as a transportation fuel. This analysis assumes that a market exists for 50,000 kg of hydrogen per day produced from wind at the wind site; only production costs to the front gate are included, no delivery or dispensing costs are included. Three different scenarios are examined: near term, which represents 2005 currently available technology; mid term, which represents technological improvements and price reductions in the next 5-10 years; and long term, which is representative of the best technology gains and price reductions surmised by industry at this point, and represents the next 10-25 years.

Levene, J. I.

2005-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "wind atlas analysis" 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

The Monitoring and Calibration Web Systems for the ATLAS Tile Calorimeter Data Quality Analysis  

E-Print Network (OSTI)

The Tile Calorimeter (TileCal), one of the ATLAS detectors, has four partitions, where each one contains 64 modules and each module has up to 48 PhotoMulTipliers (PMTs), totalizing more than 10,000 electronic channels. The Monitoring and Calibration Web System (MCWS) supports data quality analyses at channels level. This application was developed to assess the detector status and verify its performance, presenting the problematic known channels list from the official database that stores the detector conditions data (COOL). The bad channels list guides the data quality validator during analyses in order to identify new problematic channels. Through the system, it is also possible to update the channels list directly in the COOL database. MCWS generates results, as eta-phi plots and comparative tables with masked channels percentage, which concerns TileCal status, and it is accessible by all ATLAS collaboration. Annually, there is an intervention on LHC (Large Hadronic Collider) when the detector equipments (P...

Sivolella, A; The ATLAS collaboration; Ferreira, F

2012-01-01T23:59:59.000Z

122

Analysis of Wind Power and Load Data at Multiple Time Scales  

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

Analysis of Wind Power and Load Data at Multiple Time Scales Title Analysis of Wind Power and Load Data at Multiple Time Scales Publication Type Report Year of Publication 2010...

123

Use of a Vertical Vorticity Equation in Variational Dual-Doppler Wind Analysis  

Science Conference Proceedings (OSTI)

The utility of the anelastic vertical vorticity equation in a weak-constraint (least squares error) variational dual-Doppler wind analysis procedure is explored. The analysis winds are obtained by minimizing a cost function accounting for the ...

Alan Shapiro; Corey K. Potvin; Jidong Gao

2009-10-01T23:59:59.000Z

124

A Spatial Hedonic Analysis of the Effects of Wind Energy Facilities...  

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

Spatial Hedonic Analysis of the Effects of Wind Energy Facilities on Surrounding Property Values in the United States Title A Spatial Hedonic Analysis of the Effects of Wind Energy...

125

Dynamic analysis of a 5 megawatt offshore floating wind turbine  

E-Print Network (OSTI)

Enabling New Markets for Offshore Wind Energy." Proc. ofMary, and Laura Parsons. Offshore Wind Energy. Washingto,Challenges for Floating Offshore Wind Turbines. Tech. no.

Harriger, Evan Michael

2011-01-01T23:59:59.000Z

126

Dynamic analysis of a 5 megawatt offshore floating wind turbine  

E-Print Network (OSTI)

Enabling New Markets for Offshore Wind Energy." Proc.of European Wind Energy Conference 2009, Marseille, France.and S. E. Sowby. Standardized Wind and Wave Environments for

Harriger, Evan Michael

2011-01-01T23:59:59.000Z

127

A Comparative Analysis of Community Wind Power Development Models  

E-Print Network (OSTI)

ability to profitably farm the wind through ownership ofability to profitably farm the wind. Second, in recentportion of their farm to a commercial wind developer. An

Bolinger, Mark; Wiser, Ryan; Wind, Tom; Juhl, Dan; Grace, Robert; West, Peter

2005-01-01T23:59:59.000Z

128

Dynamic analysis of a 5 megawatt offshore floating wind turbine  

E-Print Network (OSTI)

Enabling New Markets for Offshore Wind Energy." Proc. ofand Laura Parsons. Offshore Wind Energy. Washingto, DC:Challenges for Floating Offshore Wind Turbines. Tech. no.

Harriger, Evan Michael

2011-01-01T23:59:59.000Z

129

Dynamic analysis of a 5 megawatt offshore floating wind turbine  

E-Print Network (OSTI)

of European Wind Energy Conference 2009, Marseille, France.Enabling New Markets for Offshore Wind Energy." Proc.Parsons. Offshore Wind Energy. Washingto, DC: Environmental

Harriger, Evan Michael

2011-01-01T23:59:59.000Z

130

A New Analysis to Diagnose Ageostrophic Winds from Wind and Temperature Measurements Made by an Observational Network  

Science Conference Proceedings (OSTI)

The present paper is devoted to a new analysis of winds and temperature measurements made by an observational network in order to provide the 3D ageostrophic circulations. This analysis may be used with data from instrumented networks providing ...

Y. Lematre; P. Neveux; G. Scialom

1994-06-01T23:59:59.000Z

131

Statistical analysis of wind energy in Chile David Watts a,b,*, Danilo Jara a  

E-Print Network (OSTI)

Data Bank Statistical analysis of wind energy in Chile David Watts a,b,*, Danilo Jara December 2010 Keywords: Wind Wind speed Energy Capacity factor Electricity Chile a b s t r a c t Bearing role in any future national energy generation matrix. With a view to understanding the local wind

Catholic University of Chile (Universidad Católica de Chile)

132

RE Atlas | Open Energy Information  

Open Energy Info (EERE)

RE Atlas RE Atlas Jump to: navigation, search Tool Summary LAUNCH TOOL Name: RE Atlas Agency/Company /Organization: National Renewable Energy Laboratory Sector: Energy Focus Area: Renewable Energy, Biomass, Geothermal, Solar, Water Power, Wind Resource Type: Maps, Software/modeling tools User Interface: Website Complexity/Ease of Use: Simple Website: maps.nrel.gov/re_atlas Country: United States Web Application Link: maps.nrel.gov/re_atlas Cost: Free OpenEI Keyword(s): Featured UN Region: Northern America Coordinates: 39.7412019515°, -105.172290802° 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":39.7412019515,"lon":-105.172290802,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

133

Aeroelastic stability analysis of a Darrieus wind turbine  

DOE Green Energy (OSTI)

An aeroelastic stability analysis has been developed for predicting flutter instabilities on vertical axis wind turbines. The analytical model and mathematical formulation of the problem are described as well as the physical mechanism that creates flutter in Darrieus turbines. Theoretical results are compared with measured experimental data from flutter tests of the Sandia 2 Meter turbine. Based on this comparison, the analysis appears to be an adequate design evaluation tool.

Popelka, D.

1982-02-01T23:59:59.000Z

134

Analysis of Surface Wind and Its Gradient In a Mesoscale Wind Observation Network  

Science Conference Proceedings (OSTI)

The surface wind is analysed with an optimum interpolation method. Covariances and long-term averages of wind observations are parameterized from data in the fairly dense synoptic wind observation network in the Netherlands.

G. J. Cats

1980-08-01T23:59:59.000Z

135

Advanced Coal Wind Hybrid: Economic Analysis  

E-Print Network (OSTI)

given current technology. Concentrating Solar Power (CSP)CSP produces most of its power during the day hence isHence, we do not consider CSP in this analysis. 39 Unlike a

Phadke, Amol

2008-01-01T23:59:59.000Z

136

Argonne Physics Division - ATLAS  

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

Initiatives Stable Beams Radioactive Beams CARIBU Beams Workshop Reports ATLAS Strategic Plan (2009) CARIBU Proposal ATLAS USERS WORKSHOP: AGENDA Saturday, August 8 (Bldg....

137

Argonne Physics Division - ATLAS  

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

(or 630-252-1911 on cell phones) Safety Aspects of radiation safety at ATLAS: Health Physics Coverage at ATLAS is provided by Argonne National Laboratory. Health Physics...

138

Wind Turbine Gearbox Condition Monitoring Round Robin Study - Vibration Analysis  

DOE Green Energy (OSTI)

The Gearbox Reliability Collaborative (GRC) at the National Wind Technology Center (NWTC) tested two identical gearboxes. One was tested on the NWTCs 2.5 MW dynamometer and the other was field tested in a turbine in a nearby wind plant. In the field, the test gearbox experienced two oil loss events that resulted in damage to its internal bearings and gears. Since the damage was not severe, the test gearbox was removed from the field and retested in the NWTCs dynamometer before it was disassembled. During the dynamometer retest, some vibration data along with testing condition information were collected. These data enabled NREL to launch a Wind Turbine Gearbox Condition Monitoring Round Robin project, as described in this report. The main objective of this project was to evaluate different vibration analysis algorithms used in wind turbine condition monitoring (CM) and find out whether the typical practices are effective. With involvement of both academic researchers and industrial partners, the project sets an example on providing cutting edge research results back to industry.

Sheng, S.

2012-07-01T23:59:59.000Z

139

Research on 2MW Wind Turbine in the Three Conditions of Modal Analysis Based on ANSYS  

Science Conference Proceedings (OSTI)

In order to prevent a phenomenon of the working wind tower turbine's dumping and fracture, we had done the modal analysis for wind power tower in this paper. by introducing FEA(Finite Element Analysis) methods, the finite element model, simulating actual ... Keywords: Wind turbine towers, Tower model, FEA, Displacement, Equivalent stress

Zhang Penglin; Cao Li

2012-10-01T23:59:59.000Z

140

Analysis of wind power ancillary services characteristics with German 250-MW wind data  

DOE Green Energy (OSTI)

With the increasing availability of wind power worldwide, power fluctuations have become a concern for some utilities. Under electric industry restructuring in the US, the impact of these fluctuations will be evaluated by examining provisions and costs of ancillary services for wind power. This paper analyzes wind power in the context of ancillary services, using data from a German 250 Megawatt Wind project.

Ernst, B.

1999-12-09T23:59:59.000Z

Note: This page contains sample records for the topic "wind atlas analysis" 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

Estimation of Three-Dimensional Error Covariances. Part II: Analysis of Wind Innovation Vectors  

Science Conference Proceedings (OSTI)

The method of statistical analysis of wind innovation (observation minus forecast) vectors is refined upon the work of Hollingsworth and Lnnberg (HL). The new refinements include (i) improved spectral representations of wind forecast error ...

Qin Xu; Li Wei

2001-12-01T23:59:59.000Z

142

Initial Economic Analysis of Utility-Scale Wind Integration in Hawaii  

DOE Green Energy (OSTI)

This report summarizes an analysis, conducted by the National Renewable Energy Laboratory (NREL) in May 2010, of the economic characteristics of a particular utility-scale wind configuration project that has been referred to as the 'Big Wind' project.

Not Available

2012-03-01T23:59:59.000Z

143

The role of wind generation in European power sector decarbonization : a general equilibrium analysis  

E-Print Network (OSTI)

Wind generation has been growing fast, with onshore wind having a 27% average annual growth rate over the past decade. Motivated by this growth, a comprehensive analysis of both the economic and engineering implications ...

Karkatsouli, Ioanna

2013-01-01T23:59:59.000Z

144

Analysis of Sub-Hourly Ramping Impacts of Wind Energy and Balancing Area Size (Poster)  

DOE Green Energy (OSTI)

WindPower 2008 conference sponsored by AWEA held in Houston, TX on June 1-4 2008. This poster illustrates the data collected for an analysis of sub-hourly ramping impacts of wind energy and balancing area size.

Milligan, M.; Kirby, B.

2008-06-01T23:59:59.000Z

145

The Characteristics of Wind Velocity that Favor the Fitting of a Weibull Distribution in Wind Speed Analysis  

Science Conference Proceedings (OSTI)

The derivation of the Weibull distribution from the bivariate normal distribution provides theoretical justification for its use in wind speed analysis if four conditions are met. These conditions are that the orthogonal components of horizontal ...

Stanton E. Tuller; Arthur C. Brett

1984-01-01T23:59:59.000Z

146

Coupled Dynamic Analysis of Multiple Unit Floating Offshore Wind Turbine  

E-Print Network (OSTI)

In the present study, a numerical simulation tool has been developed for the rotor-floater-tether coupled dynamic analysis of Multiple Unit Floating Offshore Wind Turbine (MUFOWT) in the time domain including aero-blade-tower dynamics and control, mooring dynamics and platform motion. In particular, the numerical tool developed in this study is based on the single turbine analysis tool FAST, which was developed by National Renewable Energy Laboratory (NREL). For linear or nonlinear hydrodynamics of floating platform and generalized-coordinate-based FEM mooring line dynamics, CHARM3D program, hull-riser-mooring coupled dynamics program developed by Prof. M.H. Kims research group during the past two decades, is incorporated. So, the entire dynamic behavior of floating offshore wind turbine can be obtained by coupled FAST-CHARM3D in the time domain. During the coupling procedure, FAST calculates all the dynamics and control of tower and wind turbine including the platform itself, and CHARM3D feeds all the relevant forces on the platform into FAST. Then FAST computes the whole dynamics of wind turbine using the forces from CHARM3D and return the updated displacements and velocities of the platform to CHARM3D. To analyze the dynamics of MUFOWT, the coupled FAST-CHARM3D is expanded more and re-designed. The global matrix that includes one floating platform and a number of turbines is built at each time step of the simulation, and solved to obtain the entire degrees of freedom of the system. The developed MUFOWT analysis tool is able to compute any type of floating platform with various kinds of horizontal axis wind turbines (HAWT). Individual control of each turbine is also available and the different structural properties of tower and blades can be applied. The coupled dynamic analysis for the three-turbine MUFOWT and five-turbine MUFOWT are carried out and the performances of each turbine and floating platform in normal operational condition are assessed. To investigate the coupling effect between platform and each turbine, one turbine failure event is simulated and checked. The analysis shows that some of the mal-function of one turbine in MUFOWT may induce significant changes in the performance of other turbines or floating platform. The present approach can directly be applied to the development of the remote structural health monitoring system of MUFOWT in detecting partial turbine failure by measuring tower or platform responses in the future.

Bae, Yoon Hyeok

2013-05-01T23:59:59.000Z

147

Fully coupled dynamic analysis of a floating wind turbine system  

E-Print Network (OSTI)

The use of wind power is in a period of rapid growth worldwide and wind energy systems have emerged as a promising technology for utilizing offshore wind resources for the large scale generation of electricity. Drawing ...

Withee, Jon E

2004-01-01T23:59:59.000Z

148

Dynamic analysis of a 5 megawatt offshore floating wind turbine  

E-Print Network (OSTI)

1985. 23. Hau, E. Wind Turbines: Fundamentals, Technologies,for Floating Offshore Wind Turbines. Tech. no. NREL/CP-500-Full-scale Floating Wind Turbine." Statoil, 14 Oct. 2009.

Harriger, Evan Michael

2011-01-01T23:59:59.000Z

149

A Comparative Analysis of Community Wind Power Development Models  

E-Print Network (OSTI)

Whip Up Hopes for Wind Power Again. The Wall StreetProduction Tax Credit for Wind Power. LBNL-51465. Berkeley,This combination is making wind power an important new cash

Bolinger, Mark; Wiser, Ryan; Wind, Tom; Juhl, Dan; Grace, Robert; West, Peter

2005-01-01T23:59:59.000Z

150

Mongolia wind resource assessment project  

DOE Green Energy (OSTI)

The development of detailed, regional wind-resource distributions and other pertinent wind resource characteristics (e.g., assessment maps and reliable estimates of seasonal, diurnal, and directional) is an important step in planning and accelerating the deployment of wind energy systems. This paper summarizes the approach and methods being used to conduct a wind energy resource assessment of Mongolia. The primary goals of this project are to develop a comprehensive wind energy resource atlas of Mongolia and to establish a wind measurement program in specific regions of Mongolia to identify prospective sites for wind energy projects and to help validate some of the wind resource estimates. The Mongolian wind resource atlas will include detailed, computerized wind power maps and other valuable wind resource characteristic information for the different regions of Mongolia.

Elliott, D.; Chadraa, B.; Natsagdorj, L.

1998-09-07T23:59:59.000Z

151

Wind resource assessment and wind energy system cost analysis: Fort Huachuca, Arizona  

DOE Green Energy (OSTI)

The objective of this joint DOE and National Renewable Energy Laboratory (NREL) Strategic Environmental Research and Development Program (SERDP) project is to determine whether wind turbines can reduce costs by providing power to US military facilities in high wind areas. In support of this objective, one year of data on the wind resources at several Fort Huachuca sites was collected. The wind resource data were analyzed and used as input to an economic study for a wind energy installation at Fort Huachuca. The results of this wind energy feasibility study are presented in the report.

Olsen, T.L. [Tim Olsen Consulting, Denver, CO (United States); McKenna, E. [National Renewable Energy Lab., Golden, CO (United States)

1997-12-01T23:59:59.000Z

152

Analysis of Mesoscale Model Data for Wind Integration (Poster)  

DOE Green Energy (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

153

Inviscid Wind-Turbine Analysis Using Distributed Vorticity Elements.  

E-Print Network (OSTI)

??With the recent push for green energy technologies by governments around the world, interest in wind energy has skyrocketed. From 2006 to 2009 worldwide wind (more)

Basom, Blair

2010-01-01T23:59:59.000Z

154

Analysis of Wind Power Ramping Behavior in ERCOT  

DOE Green Energy (OSTI)

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

Wan, Y. H.

2011-03-01T23:59:59.000Z

155

Modeling and analysis of wind farm impacts on power systems.  

E-Print Network (OSTI)

??The wind energy industry has undergone a dramatic transformation during the last decade. The total operating wind power capacity in the world has increased greatly. (more)

Zhou, Fengquan, 1969-

2005-01-01T23:59:59.000Z

156

Fully coupled dynamic analysis of a floating wind turbine system .  

E-Print Network (OSTI)

??The use of wind power is in a period of rapid growth worldwide and wind energy systems have emerged as a promising technology for utilizing (more)

Withee, Jon E.

2004-01-01T23:59:59.000Z

157

Tropical Cyclone Wind Retrievals from the Advanced Microwave Sounding Unit: Application to Surface Wind Analysis  

Science Conference Proceedings (OSTI)

Horizontal winds at 850 hPa from tropical cyclones retrieved using the nonlinear balance equation, where the mass field was determined from Advanced Microwave Sounding Unit (AMSU) temperature soundings, are compared with the surface wind fields ...

Kotaro Bessho; Mark DeMaria; John A. Knaff

2006-03-01T23:59:59.000Z

158

An Analysis of Wind Direction and Horizontal Wind Component Fluctuations over Complex Terrain  

Science Conference Proceedings (OSTI)

Based on an extensive wind dataset over complex terrain, the commonly used small-angle approximation ?v ? ??V is studied and found to overestimate over all wind speeds and ?? values observed. This should be anticipated due to the assumptions ...

K. H. Papadopoulos; C. G. Helmis; G. T. Amanatidis

1992-09-01T23:59:59.000Z

159

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

160

Static Analysis on the Detached Column Substructure of Offshore Wind Power Based on Ansys  

Science Conference Proceedings (OSTI)

With the rapid development of wind power technology, offshore wind power has become one of the hottest topics in the worlds energy field. Basic research on wind power attracts more and more attention. This paper uses Ansys software to do static ... Keywords: ansys, etached column, extreme environmental loads, static analysis

Li Fenhua; Guo Weizhao; Liu Yuan; Xing Jian

2010-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "wind atlas analysis" 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

A Spatial Hedonic Analysis of the Effects of Wind Energy Facilities on  

E-Print Network (OSTI)

LBNL-6362E A Spatial Hedonic Analysis of the Effects of Wind Energy Facilities on Surrounding://emp.lbl.gov/sites/all/files/lbnl-6362e.pdf This work was supported by the Office of Energy Efficiency and Renewable Energy (Wind of Wind Energy Facilities on Surrounding Property Values in the United States Prepared for the Office

Lee, Jason R.

162

A SENSITIVITY ANALYSIS OF THE TREATMENT OF WIND ENERGY IN THE AEO99 VERSION OF NEMS  

E-Print Network (OSTI)

LBNL-44070 TP-28529 A SENSITIVITY ANALYSIS OF THE TREATMENT OF WIND ENERGY IN THE AEO99 VERSION and market penetration on the U.S. Department of Energy's Annual Energy Outlook (AEO) forecast for wind supply mix remains fairly steady, and renewable energy technologies such as wind do not achieve

163

A Comparative Analysis of Community Wind Power DevelopmentModels  

DOE Green Energy (OSTI)

For years, farmers in the United States have looked with envy on their European counterparts ability to profitably farm the wind through ownership of distributed, utility-scale wind projects. Only within the past few years, however, has farmer- or community-owned windpower development become a reality in the United States. The primary hurdle to this type of development in the United States has been devising and implementing suitable business and legal structures that enable such projects to take advantage of tax-based federal incentives for windpower. This article discusses the limitations of such incentives in supporting farmer- or community-owned wind projects, describes four ownership structures that potentially overcome such limitations, and finally conducts comparative financial analysis on those four structures, using as an example a hypothetical 1.5 MW farmer-owned project located in the state of Oregon. We find that material differences in the competitiveness of each structure do exist, but that choosing the best structure for a given project will largely depend on the conditions at hand; e.g., the ability of the farmer(s) to utilize tax credits, preference for individual versus cooperative ownership, and the state and utility service territory in which the project will be located.

Bolinger, Mark; Wiser, Ryan; Wind, Tom; Juhl, Dan; Grace, Robert; West, Peter

2005-05-20T23:59:59.000Z

164

Comparative Analysis of a Novel Approach to Economical Wind Energy Verterbi School of Engineering Research & Innovation Fund Final Report  

E-Print Network (OSTI)

1 Comparative Analysis of a Novel Approach to Economical Wind Energy Verterbi School of the research project: Conventional wind energy generation is obtained from "wind farms" that are in high-wind infrastructures. It was expected that the proposed approach would reduce the cost of wind energy generation

Rohs, Remo

165

Analysis of Offshore Wind Energy Leasing Areas for the Rhode Island/Massachusetts Wind Energy Area  

SciTech Connect

The National Renewable Energy Laboratory (NREL), under an interagency agreement with the Bureau of Ocean Energy Management (BOEM), is providing technical assistance to BOEM on the identification and delineation of offshore leasing areas for offshore wind energy development within the Atlantic Coast Wind Energy Areas (WEAs) established by BOEM in 2012. This report focuses on NREL's evaluation of BOEM's Rhode Island/Massachusetts (RIMA) WEA leasing areas. The objective of the NREL evaluation was to assess the proposed delineation of the two leasing areas and determine if the division is reasonable and technically sound. Additionally, the evaluation aimed to identify any deficiencies in the delineation. As part of the review, NREL performed the following tasks: 1. Performed a limited review of relevant literature and RIMA call nominations. 2. Executed a quantitative analysis and comparison of the two proposed leasing areas 3. Conducted interviews with University of Rhode Island (URI) staff involved with the URI Special Area Management Plan (SAMP) 4. Prepared this draft report summarizing the key findings.

Musial, W.; Elliott, D.; Fields, J.; Parker, Z.; Scott, G.

2013-04-01T23:59:59.000Z

166

Analysis of Offshore Wind Energy Leasing Areas for the Rhode Island/Massachusetts Wind Energy Area  

DOE Green Energy (OSTI)

The National Renewable Energy Laboratory (NREL), under an interagency agreement with the Bureau of Ocean Energy Management (BOEM), is providing technical assistance to BOEM on the identification and delineation of offshore leasing areas for offshore wind energy development within the Atlantic Coast Wind Energy Areas (WEAs) established by BOEM in 2012. This report focuses on NREL's evaluation of BOEM's Rhode Island/Massachusetts (RIMA) WEA leasing areas. The objective of the NREL evaluation was to assess the proposed delineation of the two leasing areas and determine if the division is reasonable and technically sound. Additionally, the evaluation aimed to identify any deficiencies in the delineation. As part of the review, NREL performed the following tasks: 1. Performed a limited review of relevant literature and RIMA call nominations. 2. Executed a quantitative analysis and comparison of the two proposed leasing areas 3. Conducted interviews with University of Rhode Island (URI) staff involved with the URI Special Area Management Plan (SAMP) 4. Prepared this draft report summarizing the key findings.

Musial, W.; Elliott, D.; Fields, J.; Parker, Z.; Scott, G.

2013-04-01T23:59:59.000Z

167

Impact of Wind Energy on Hourly Load Following Requirements: An Hourly and Seasonal Analysis; Preprint  

Science Conference Proceedings (OSTI)

The impacts of wind energy on the power system grid can be decomposed into several time scales that include regulation, load following, and unit commitment. Techniques for evaluating the impacts on these time scales are still evolving, and as wind energy becomes a larger part of the electricity supply, valuable experience will be gained that will help refine these methods. Studies that estimated the impact of wind in the load following time scale found differing results and costs, ranging from near zero to approximately $2.50/megawatt-hour (MWh). Part of the reason for these differences is the different interpretation of the impacts that would be allocated to this ancillary service. Because of the low correlation between changes in load and wind, long-term analyses of the load following impact of wind may find low impacts. During the daily load cycle, there is a tremendous variability in load following requirements in systems without wind. When significant levels of wind generation are added to the resource mix, relatively small changes in wind output can complicate the task of balancing the system during periods of large load swings. This paper analyzes the load following impacts of wind by segregating these critical time periods of the day and separating the analysis by season. The analysis compares wind generation at geographically dispersed sites to wind generation based primarily at a single site, and for a large penetration of wind (more than 20% wind capacity to peak load).

Krich, A.; Milligan, M.

2005-05-01T23:59:59.000Z

168

Analysis of Wind Speed Measurements using Continuous Wave LIDAR for Wind Turbine Control ?  

E-Print Network (OSTI)

Light Detection and Ranging (LIDAR) systems are able to measure the speed of incoming wind before it interacts with a wind turbine rotor. These preview wind measurements can be used in feedforward control systems designed to reduce turbine loads. However, the degree to which such preview-based control techniques can reduce loads by reacting to turbulence depends on how accurate the incoming wind field can be measured. This study examines the accuracy of different measurement scenarios that rely on coherent continuouswave Doppler LIDAR systems to determine their applicability to feedforward control. In particular, the impacts of measurement range and angular offset from the wind direction are studied for various wind conditions. A realistic case involving a scanning LIDAR unit mounted in the spinner of a wind turbine is studied in depth, with emphasis on choices for scan radius and preview distance. The effects of turbulence parameters on measurement accuracy are studied as well. Nomenclature d measurement preview distance F focal distance k wind velocity wavenumber (m?1) r scan radius for spinning LIDAR RMS root mean square ?u standard deviation of u component of wind velocity TI turbulence intensity ? LIDAR measurement angle ? mean u wind speed u ? friction velocity U ? D average friction velocity over rotor disk ? angle between laser and wind velocity vector ? angle in the rotor plane ? rotational rate of spinning LIDAR

Eric Simley; Lucy Y. Pao; Rod Frehlich; Bonnie Jonkman; Neil Kelley

2011-01-01T23:59:59.000Z

169

Control design and analysis of doubly-fed induction generator in wind power application.  

E-Print Network (OSTI)

??The work presented in this thesis includes control system design, analysis and grid synchronization of a DFIG (doubly-fed induction generator) driven by a wind turbine (more)

Mazari, Shukul

2009-01-01T23:59:59.000Z

170

TransAtlas | Open Energy Information  

Open Energy Info (EERE)

TransAtlas TransAtlas Jump to: navigation, search Tool Summary Name: TransAtlas Agency/Company /Organization: National Renewable Energy Laboratory Sector: Energy Focus Area: Fuels & Efficiency, Transportation Phase: Determine Baseline, Evaluate Options, Develop Goals, Prepare a Plan, Evaluate Effectiveness and Revise as Needed Topics: Analysis Tools Resource Type: Dataset, Maps User Interface: Website Website: maps.nrel.gov/transatlas Cost: Free OpenEI Keyword(s): Energy Efficiency and Renewable Energy (EERE) Tools References: National Renewable Energy Laboratory Advanced Vehicles and Fuels Research: Data and Resources[1] Logo: TransAtlas TransAtlas is an interactive map with data sets related to transportation and alternative fuels in the United States How to Use This Tool

171

1 Energy Markets and Policy Group Energy Analysis Department The Impact of Wind Power Projects  

E-Print Network (OSTI)

1 Energy Markets and Policy Group · Energy Analysis Department The Impact of Wind Power Projects, Wind & Hydropower Technologies Program #12;2 Energy Markets and Policy Group · Energy Analysis · Conclusions and Further Research #12;3 Energy Markets and Policy Group · Energy Analysis Department Proximity

172

Techno-economics analysis of a wind/PV hybrid system to provide electricity for a household in Malaysia  

Science Conference Proceedings (OSTI)

This paper is study on techno-economics analysis of a wind/PV hybrid system for a household in Malaysia. One year recorded wind speed and solar radiation are used for the design of a hybrid energy system. In 2004 average annual wind speed in Kuala Terengganu ... Keywords: electrical load, techno-economics analysis, wind/PV hybrid system

Ahmad Fudholi; Mohd Zamri Ibrahim; Mohd Hafidz Ruslan; Lim Chin Haw; Sohif Mat; Mohd Yusof Othman; Azami Zaharim; Kamaruzzaman Sopian

2012-01-01T23:59:59.000Z

173

NREL: Wind Research - NREL Analysis Enables BOEM to Hold Its First  

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

Analysis Enables BOEM to Hold Its First Commercial Offshore Lease Sale Analysis Enables BOEM to Hold Its First Commercial Offshore Lease Sale in the United States December 2, 2013 Photo showing three 5-megawatt wind turbines installed above the water at the Alpha Ventus Offshore Wind Farm in Germany. A boat is moving forward to the left of the turbines. REpower 5-megawatt wind turbines at the Alpha Ventus Offshore Wind Farm in Germany demonstrate the possibilities for offshore wind on a grand scale-and now new offshore wind opportunities are coming to the United States. Photo by Gary Norton, NREL 27363 When the U.S. Department of the Interior's Bureau of Ocean Energy Management (BOEM) needed a process to delineate the bureau's proposed offshore Wind Energy Areas (WEAs) into auctionable leasing areas, the agency turned to the National Renewable Energy Laboratory (NREL). Under an

174

Aeroelastic analysis of the troposkien-type wind turbine  

SciTech Connect

The testing of troposkien-type wind turbines has indicated that under certain conditions serious vibrations of the blades can occur, involving flatwise bending, torsion, and chordwise bending. It is the purpose of this report to perform an aeroelastic analysis of the stability of the coupled bending and torsional motion of such blades with a view to determining the cause of these vibrations as a means of suppressing them. The emphasis of the analysis is on obtaining physical understanding rather than exact numerical results. The effect of extreme variation of the chordwise location of the section center of gravity of troposkien-type rotor blades was found to be negligible with regard to blade flutter. This conclusion implies that chordwise mass balancing of the blades is not required, with consequent large reductions in blade design and manufacturing requirements, and therefore in blade cost.

Ham, N.D.

1977-04-01T23:59:59.000Z

175

Argonne Physics Division - ATLAS  

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

Beam Schedule Beam Schedule CARIBU Schedule ATLAS Future CARIBU Future Scheduling Considerations ATLAS Archive CARIBU Archive ATLAS Schedules Beamtime at ATLAS is normally scheduled in two-month blocks. We make every effort to produce an accurate schedule at least two weeks prior to its approval in a scheduling meeting. The scheduling process is continuously ongoing with communication between ATLAS personnel and the Principal Investigator (PI) of each experiment approved by the PAC. Follow the link at the left to learn more about the considerations that go into producing an ATLAS schedule. If you have any comments or concerns regarding this situation, please contact the ATLAS User Liaison Physicist (Shaofei Zhu, zhu@anl.gov), the Scientific Director of ATLAS (Guy Savard, savard@phy.anl.gov), or members

176

Transfer reactions at ATLAS  

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

Transfer reactions before, and with, HELIOS Or - "...seems like an awful lot of work just to do (d,p)..." Congratulations ATLAS Happy 25 th Prologue: Long before ATLAS... 11...

177

ATLAS Metadata Task Force  

E-Print Network (OSTI)

stage contain events from that block and trigger chain. This1] ATLAS Raw Event Format in Trigger & DAQ, https://across ATLAS. EF Event Filter (third level trigger): farm of

Costanzo, D.; ATLAS Collaboration

2009-01-01T23:59:59.000Z

178

Argonne Physics Division - ATLAS  

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

the policy and procedures related to access to the ATLAS Facility. 2.0 POLICY It is Physics Division policy that access to the ATLAS Facility is restricted to persons who are...

179

Wind energy mission analysis. Final report, appendices A--J. [USA  

DOE Green Energy (OSTI)

Information is presented concerning meteorological data and supporting analyses, gross energy consumption patterns and end-use analysis, analysis for industrial applications of wind energy conversion systems (WECS), analysis for residential applications of WECS, analysis for application of WECS to communities remote from utility grids, analysis for agricultural applications of WECS, regional evaluation of the economics of wind turbine generation to the U. S. electric utility district, impact of storage on WECS, financial analysis techniques, and system spacing.

Not Available

1977-02-18T23:59:59.000Z

180

NREL: Dynamic Maps, GIS Data, and Analysis Tools - Wind Maps  

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

shore annual wind resource potential in the United States map. Thumbnail image of the 90m offshore wind resource potential in the United States. Thumbnail image of the national 50m...

Note: This page contains sample records for the topic "wind atlas analysis" 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

Analysis of Nighttime Drainage Winds in Boulder, Colorado during 1980  

Science Conference Proceedings (OSTI)

Characteristics of nighttime drainage winds that occurred along the eastern slope of the Rocky Mountains around Boulder, Colorado during the calendar year 1980 are examined. The data used for this study were acquired from the Boulder Wind Network ...

Bruce W. Hootman; William Blumen

1983-05-01T23:59:59.000Z

182

Stochastic Analysis of Wind Turbine Power Curves Edgar Anahua  

E-Print Network (OSTI)

procedure (IEC 61400-12) for power performance charac- terization of a single wind turbines is shown by the standard IEC 61400-12 3 [12]. In this standard procedure the power curve of a single wind turbine of the blade pitch angle system of a wind turbine [9]. The phase averaged P(t,t ) function depends on the time

Peinke, Joachim

183

Analysis of Wind Generation System by Real-Time Simulation  

Science Conference Proceedings (OSTI)

Due to the demand of green energy, the number of wind turbines installed has been increased drastically worldwide. Comparing with the traditional utility generation systems, the dynamic characteristic and response of wind farms are totally different. ... Keywords: Doubly-fed induction generator, real-time simulation, PC cluster-based real-time simulator, wind farm

H. C. Su; G. W. Chang; H. M. Huang; K. K. Jen; G. C. Chung; G. Z. Wu

2012-06-01T23:59:59.000Z

184

Optimal Allocation of Reactive Power Source in Wind Farms Using Sensitivity Analysis and Tabu Algorithm  

Science Conference Proceedings (OSTI)

Considering wind farms real operation characteristics, a novel method using sensitivity analysis and Tabu algorithm for reactive power compensation allocations is proposed. In this paper, the sensitivity coefficient is defined as partial derivative of ... Keywords: Wind farm, Sensitivity analysis, Reactive power compensation, SVC, Tabu algorithm

Ping Zhang; XiangJun Zeng; Ling Li

2008-10-01T23:59:59.000Z

185

Analysis of Temporal and Spatial Characteristics on Output of Wind Farms with Doubly Fed Induction Generator Wind Turbines  

Science Conference Proceedings (OSTI)

Due to the large number of wind turbines and covering too large area in a large wind farm, wake effects among wind turbines and wind speed time delays will have a greater impact of wind farms models. Taking wind farms with doubly fed induction generator(DFIG) ... Keywords: wind farm, modeling, temporal and spatial characteristics, DFIG, output characteristics

Shupo Bu, Xunwen Su

2012-12-01T23:59:59.000Z

186

Wind Energy Finance (WEF): An Online Calculator for Economic Analysis of Wind Projects (Double-Gatefold Brochure)  

Wind Powering America (EERE)

How Does WEF Work? How Does WEF Work? Inputs The user enters data about the project, including: * General assumptions * Capital costs * Operating expenses * Financing assumptions * Tax assumptions * Economic assumptions * Financial constraining assumptions. Extensive help notes describe each input and provide reasonable default values. Outputs * Minimum energy payment to meet financial criteria * Levelized cost of energy * Payback period * Net present value * Internal rate of return * Summary and detailed cash flows. As an alternative option, if the user enters a first-year energy payment, the program will calculate the rate of return, coverage ratios, etc. Wind Energy Finance (WEF): An Online Calculator for Economic Analysis of Wind Projects The National Renewable Energy Laboratory created

187

Argonne Physics Division - ATLAS  

NLE Websites -- All DOE Office Websites

[Argonne Logo] [DOE Logo] [Argonne Logo] [DOE Logo] Physics Division Home News Division Information Contact Organization Chart Directory ES&H Scientific Staff Publications Awards & Honors Pictures & Videos New Faces PHY Webmail Meeting Rooms Research Low Energy Medium Energy Theory Accelerator R&D Research Highlights Seminars & Events Colloquium Division Seminar MEP Seminar Theory Seminar Heavy Ion Discussion Student Lunch Talk ATLAS arrowdn Facility Schedules User Info Proposals Targetlab CARIBU FMA Gammasphere GRETINA HELIOS AGFA Search Argonne ... Search ATLAS Facility User Info Proposals Beam Schedule Safety Gammasphere GRETINA FMA CARIBU HELIOS AGFA Targetlab Workshop 2009 25 Years of ATLAS Gretina Workshop ATLAS Gus Savard Guy Savard, Scientific Director of ATLAS Welcome to ATLAS, the Argonne Tandem Linac Accelerator System. ATLAS is the

188

Atlas Finding Aid Contents/Index  

E-Print Network (OSTI)

Atlas Finding Aid Contents/Index A (1) City & State Atlas A (2) Astronomy Atlas A (3) U.S. Atlas A (8) Geologic Atlases A (9) Environment / Forest & Desert A (10) Historic Atlases A (11) World Atlases A (12) Canada and Russia A (13) Europe and the Middle East A (1) City & State Atlas 1. A (1) ALASKA

Ward, Karen

189

NREL: Energy Analysis - Wind Power Results - Life Cycle Assessment  

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

Wind LCA Harmonization (Fact Sheet) Wind LCA Harmonization (Fact Sheet) Cover of the LWind LCA Harmonization Fact Sheet Download the Fact Sheet Wind Power Results - Life Cycle Assessment Harmonization To better understand the state of knowledge of greenhouse gas (GHG) emissions from utility-scale wind power systems, NREL developed and applied a systematic approach to review life cycle assessment literature, identify sources of variability and, where possible, reduce variability in GHG emissions estimates through a meta-analytical process called "harmonization." Over the last 30 years, several hundred life cycle assessments have been conducted for wind power technologies with wide-ranging results. Harmonization for onshore and offshore wind power systems was performed by adjusting published greenhouse gas estimates to achieve:

190

Wind turbine reliability : a database and analysis approach.  

DOE Green Energy (OSTI)

The US wind Industry has experienced remarkable growth since the turn of the century. At the same time, the physical size and electrical generation capabilities of wind turbines has also experienced remarkable growth. As the market continues to expand, and as wind generation continues to gain a significant share of the generation portfolio, the reliability of wind turbine technology becomes increasingly important. This report addresses how operations and maintenance costs are related to unreliability - that is the failures experienced by systems and components. Reliability tools are demonstrated, data needed to understand and catalog failure events is described, and practical wind turbine reliability models are illustrated, including preliminary results. This report also presents a continuing process of how to proceed with controlling industry requirements, needs, and expectations related to Reliability, Availability, Maintainability, and Safety. A simply stated goal of this process is to better understand and to improve the operable reliability of wind turbine installations.

Linsday, James (ARES Corporation); Briand, Daniel; Hill, Roger Ray; Stinebaugh, Jennifer A.; Benjamin, Allan S. (ARES Corporation)

2008-02-01T23:59:59.000Z

191

ATLAS parameter study  

DOE Green Energy (OSTI)

The purpose of this study is to make an independent assessment on the parameters chosen for the ATLAS capacitor bank at LANL. The contractor will perform a study of the basic pulsed power parameters of the ATLAS device with baseline functional parameters of >25 MA implosion current and <2.5 microsecond current risetime. Nominal circuit parameters held fixed will be the 14 nH from the vacuum interface to the load, and the nominal load impedances of 1 milliohm for slow loads and 10 milliohms for fast loads. Single Ended designs, as opposed to bipolar designs, will be studied in detail. The ATLAS pulsed power design problem is about inductance. The reason that a 36 MJ bank is required is that such a bank has enough individual capacitors so that the parallel inductance is acceptably low. Since about half the inductance is in the bank, and the inductance and time constant of the submodules is fixed, the variation of output with a given parameter will generally be a weak one. In general, the dl/dt calculation demonstrates that for the real system inductances, 700 kV is the optimum voltage for the bank to drive X-ray loads. The optimum is broad, and there is little reduction in performance at voltages as low as 450 kV. The direct drive velocity analysis also shows that the optimum velocity is between 480 and 800 kV for a variety of assumptions, and that there is less than a 10% variation in velocity over this range. Voltages in the 120 kV--600 kV range are desirable for driving heavy liners. A compromise optimum operating point might be 480 kV, at which all X-ray operation scenarios are within 10% of their velocity optimum, and heavy liners can be configured to be near optimum if small enough. Based on very preliminary studies the author believes that the choice of a single operating voltage point (say, 480 kV) is unnecessary, and that a bank engineered for dual operation at 480 and 240 kV will be the best solution to the ATLAS problem.

Adler, R.J. [North Star Research Corp., Albuquerque, NM (United States)

1994-09-03T23:59:59.000Z

192

Dynamic analysis of a 5 megawatt offshore floating wind turbine  

E-Print Network (OSTI)

to the support platform is the NREL offshore 5- MW baselineOffshore wind turbine classification [3]. .. 3 Figure 1.2: Alternative platform

Harriger, Evan Michael

2011-01-01T23:59:59.000Z

193

Amazon Pollen Manual and Atlas/Manual e Atlas Palinologico da Amozonia  

E-Print Network (OSTI)

Review: Amazon Pollen Manual andAtlas/Manual e Atlas Palinologico da Amozonia By PaulMoreno Patio. Amazon Pollen Manual and Atlas/Manual e Atlas

Renner, Susanne

2001-01-01T23:59:59.000Z

194

Renewable energy atlas of the United States.  

DOE Green Energy (OSTI)

The Renewable Energy Atlas (Atlas) of the United States is a compilation of geospatial data focused on renewable energy resources, federal land ownership, and base map reference information. It is designed for the U.S. Department of Agriculture Forest Service (USFS) and other federal land management agencies to evaluate existing and proposed renewable energy projects. Much of the content of the Atlas was compiled at Argonne National Laboratory (Argonne) to support recent and current energy-related Environmental Impact Statements and studies, including the following projects: (1) West-wide Energy Corridor Programmatic Environmental Impact Statement (PEIS) (BLM 2008); (2) Draft PEIS for Solar Energy Development in Six Southwestern States (DOE/BLM 2010); (3) Supplement to the Draft PEIS for Solar Energy Development in Six Southwestern States (DOE/BLM 2011); (4) Upper Great Plains Wind Energy PEIS (WAPA/USFWS 2012, in progress); and (5) Energy Transport Corridors: The Potential Role of Federal Lands in States Identified by the Energy Policy Act of 2005, Section 368(b) (in progress). This report explains how to add the Atlas to your computer and install the associated software; describes each of the components of the Atlas; lists the Geographic Information System (GIS) database content and sources; and provides a brief introduction to the major renewable energy technologies.

Kuiper, J.A.; Hlava, K.Greenwood, H.; Carr, A. (Environmental Science Division)

2012-05-01T23:59:59.000Z

195

Electromagnetic torque analysis of a DFIG for wind turbines  

Science Conference Proceedings (OSTI)

Electromagnetic torque of doubly fed induction generator (DFIG) is a consequence of the rotor and stator supply. The stator voltage has a fixed amount and frequency. The rotor voltage of the DFIG as a part of a wind turbine has a variable amount and ... Keywords: DFIG, electromagnetic torque, renewable energy, wind turbine

Jurica Smajo; Dinko Vukadinovic

2008-05-01T23:59:59.000Z

196

Electricity Markets and Policy Group Energy Analysis Department Wind Project Financing Structures  

E-Print Network (OSTI)

characteristics of each: - Wind projects have higher capital costs but lower operating costs (e.g., no fuel costs project and finances all costs. No other investor or lender capital is involved. Corporate entity is ableElectricity Markets and Policy Group · Energy Analysis Department 1 Wind Project Financing

197

Reliability analysis of fault tolerant wind energy conversion system with doubly fed induction generator  

Science Conference Proceedings (OSTI)

This paper deals with the design of a reliable fault tolerant converter topology for grid connected Wind Energy Conversion System (WECS) with Double Fed Induction Generator (DFIG) based on functional redundancy. The main contribution of the developed ... Keywords: Markov chain model, fault tolerant system, reliability analysis, wind energy conversion system

Philippe Weber; Florent Becker; Antoine Mathias; Didier Theilliol; Youmin M. Zhang

2012-10-01T23:59:59.000Z

198

Hydrogen Sulfide Dispersion Consequences Analysis in Different Wind Speeds: A CFD Based Approach  

Science Conference Proceedings (OSTI)

Hydrogen sulfide (h2s) leakage and dispersion from a sulfide recycle installation in different wind speeds are simulated by implementing a 3D Computational Fluid Dynamics (CFD) model. H2s concentrations of monitor points which represent dispersion contours ... Keywords: CFD, hydrogen Sulfide, dispersion, concenquences analysis, different wind speeds

Bo Zhang; Guo-ming Chen

2009-10-01T23:59:59.000Z

199

DOE Hydrogen Analysis Repository: Distributed Hydrogen Production from Wind  

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

from Wind from Wind Project Summary Full Title: Well-to-Wheels Case Study: Distributed Hydrogen Production from Wind Project ID: 216 Principal Investigator: Fred Joseck Keywords: Wind; hydrogen production; well-to-wheels (WTW); fuel cell vehicles (FCV); electrolysis Purpose Provide well-to-wheels energy use and emissions data on a potential pathway for producing hydrogen from wind via distributed water electrolysis. This data was used in developing the U.S. Department of Energy Hydrogen Posture Plan. Performer Principal Investigator: Fred Joseck Organization: DOE/EERE/HFCIT Address: 1000 Independence Avenue, SW Washington, DC 20585 Telephone: 202-586-7932 Email: Fred.Joseck@ee.doe.gov Additional Performers: Margaret Mann, National Renewable Energy Laboratory; Michael Wang, Argonne National Laboratory

200

Computational design and analysis of flatback airfoil wind tunnel experiment.  

DOE Green Energy (OSTI)

A computational fluid dynamics study of thick wind turbine section shapes in the test section of the UC Davis wind tunnel at a chord Reynolds number of one million is presented. The goals of this study are to validate standard wind tunnel wall corrections for high solid blockage conditions and to reaffirm the favorable effect of a blunt trailing edge or flatback on the performance characteristics of a representative thick airfoil shape prior to building the wind tunnel models and conducting the experiment. The numerical simulations prove the standard wind tunnel corrections to be largely valid for the proposed test of 40% maximum thickness to chord ratio airfoils at a solid blockage ratio of 10%. Comparison of the computed lift characteristics of a sharp trailing edge baseline airfoil and derived flatback airfoils reaffirms the earlier observed trend of reduced sensitivity to surface contamination with increasing trailing edge thickness.

Mayda, Edward A. (University of California, Davis, CA); van Dam, C.P. (University of California, Davis, CA); Chao, David D. (University of California, Davis, CA); Berg, Dale E.

2008-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "wind atlas analysis" 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

DOE Hydrogen Analysis Repository: Centralized Hydrogen Production from Wind  

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

Wind Wind Project Summary Full Title: Well-to-Wheels Case Study: Centralized Hydrogen Production from Wind Project ID: 214 Principal Investigator: Fred Joseck Keywords: Wind; hydrogen production; well-to-wheels (WTW); fuel cell vehicles (FCV); electrolysis Purpose Provide well-to-wheels energy use and emissions data on a potential pathway for producing hydrogen from wind via centralized water electrolysis. This data was used in developing the U.S. Department of Energy Hydrogen Posture Plan. Performer Principal Investigator: Fred Joseck Organization: DOE/EERE/HFCIT Address: 1000 Independence Avenue, SW Washington, DC 20585 Telephone: 202-586-7932 Email: Fred.Joseck@ee.doe.gov Additional Performers: Margaret Mann, National Renewable Energy Laboratory; Michael Wang, Argonne National Laboratory

202

Wavelet Analysis on Solar Wind Parameters and Geomagnetic Indices  

E-Print Network (OSTI)

The sun as an oscillator produces frequencies which propagate in the heliosphere, via solar wind, to the terrestrial magnetosphere. We searched for those frequencies in the parameters of the near Earth solar plasma and the geomagnetic indices for the past four solar cycles. The solar wind parameters used in this work are the interplanetary magnetic field, plasma beta, Alfven Mach number, solar wind speed, plasma temperature, plasma pressure, plasma density and the geomagnetic indices DST, AE, Ap and Kp. We found out that each parameter of the solar wind exhibit certain periodicities which di?erentiate in each cycle. Our results indicate intermittent periodicities in our data, some of them shared between the solar wind parameters and geomagnetic indices.

Katsavrias, Ch; Moussas, X

2012-01-01T23:59:59.000Z

203

Wind and Solar Resource Assessment of Sri Lanka and the Maldives (CD-ROM)  

DOE Green Energy (OSTI)

The Wind and Solar Resource Assessment of Sri Lanka and the Maldives CD contains an electronic version of Wind Energy Resource Atlas of Sri Lanka and the Maldives (NREL/TP-500-34518), Solar Resource Assessment for Sri Lanka and the Maldives (NREL/TO-710-34645), Sri Lanka Wind Farm Analysis and Site Selection Assistance (NREL/SR-500-34646), GIS Data Viewer (software and data files with a readme file), and Hourly Solar and Typical Meteorological Year Data with a readme file.

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

2003-08-01T23:59:59.000Z

204

Argonne Physics Division - ATLAS  

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

Facility Facility User Info Proposals Beam Schedule Safety Gammasphere GRETINA FMA CARIBU HELIOS AGFA Targetlab Workshop 2009 25 Years of ATLAS Gretina Workshop ATLAS Gus Savard Guy Savard, Scientific Director of ATLAS Welcome to ATLAS, the Argonne Tandem Linac Accelerator System. ATLAS is the world's first superconducting linear accelerator for heavy ions at energies in the vicinity of the Coulomb barrier. This is the energy domain best suited to study the properties of the nucleus, the core of matter, the fuel of stars. ATLAS can provide beams of essentially all stable isotopes from proton to uranium, and a variety of light radioactive beams through our in-flight production program and heavier neutron-rich isotopes from the newly commissioned CARIBU upgrade. A one page brochure (pdf format)

205

Brookhaven and ATLAS | Brookhaven and the LHC  

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

Brookhaven and ATLAS Brookhaven and ATLAS BNL scientists install cathode strip chambers BNL scientists install cathode strip chambers - designed and built at the Laboratory - and monitored drift tubes into the ATLAS small wheel. Image credit: CERN. Brookhaven physicists and engineers are participating in one of the most ambitious scientific projects in the world - constructing, operating, doing physics analysis of the data, and upgrading a machine the size of a seven-story building that will open up new frontiers in the human pursuit of knowledge about elementary particles and their interactions. The machine, dubbed ATLAS, is one of four facilities located at the LHC near Geneva, in Switzerland. The LHC consists of two circular vacuum pipes in which protons travel in opposite directions and collide at nearly the

206

An evaluation of wind turbine blade cross section analysis techniques.  

SciTech Connect

The blades of a modern wind turbine are critical components central to capturing and transmitting most of the load experienced by the system. They are complex structural items composed of many layers of fiber and resin composite material and typically, one or more shear webs. Large turbine blades being developed today are beyond the point of effective trial-and-error design of the past and design for reliability is always extremely important. Section analysis tools are used to reduce the three-dimensional continuum blade structure to a simpler beam representation for use in system response calculations to support full system design and certification. One model simplification approach is to analyze the two-dimensional blade cross sections to determine the properties for the beam. Another technique is to determine beam properties using static deflections of a full three-dimensional finite element model of a blade. This paper provides insight into discrepancies observed in outputs from each approach. Simple two-dimensional geometries and three-dimensional blade models are analyzed in this investigation. Finally, a subset of computational and experimental section properties for a full turbine blade are compared.

Paquette, Joshua A.; Griffith, Daniel Todd; Laird, Daniel L.; Resor, Brian Ray

2010-03-01T23:59:59.000Z

207

Economic analysis of wind-powered crop drying. Final report  

DOE Green Energy (OSTI)

Potential applications of wind energy include not only large central turbines that can be utilized by utilities, but also dispersed systems for farms and other applications. The US Departments of Energy (DOE) and Agriculture (USDA) currently are establishing the feasibility of wind energy use in applications where the energy can be used as available, or stored in a simple form. These applications include production of hot water for rural sanitation, heating and cooling of rural structures and products, drying agricultural products, and irrigation. This study, funded by USDA, analyzed the economic feasibility of wind power in crop drying. Drying of corn, soybeans, rice, peanuts, tobacco, and dehydrated alfalfa were addressed.

Garling, W.S.; Harper, M.R.; Merchant-Geuder, L.; Welch, M.

1980-03-01T23:59:59.000Z

208

Argonne Physics Division - ATLAS  

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

ATLAS Operations personnel, and to various experimental instrument specialists in the Physics Division. The PAC members will review each proposal for scientific merit and...

209

Wind: wind speed and wind power density GIS data at 50m above ground and  

Open Energy Info (EERE)

Bangladesh from RisoeDTU Bangladesh from RisoeDTU Dataset Summary Description (Abstract): These data are results from the KAMM/WASP studies for Bangladesh. Version 2 is an updated version of the earlier release and includes an adjustment to Weibull A and k to bring the Atlas values into better agreement with observations. See supplemental information.The KAMM/WAsP methodology uses a set of wind classes to represent wind conditions for the mapped region. A mesoscale simulation for each wind class, using KAMM (Karlsruhe Mesoscale Model), is performed and statistics performed on the model output. The result is i. a wind resource map, a summary of the simulated wind climate, and ii. a wind atlas, a summary of the wind climate standardized to flat, uniform roughness terrain. (Purpose): The product is intended to be used to

210

Accuracy Analysis of Rubsonde-GPS Wind Sounding System  

Science Conference Proceedings (OSTI)

The results of program of estimate the limiting accuracy of atmospheric wind profiles obtained by tracking a new balloon, the Rubsonde, with the Global Positioning System (GPS) are presented. In the first part, the authors detail the data ...

Jean Barat; Charles Cot

1995-05-01T23:59:59.000Z

211

Stochastic Analysis of Southern and Pacific Ocean Sea Surface Winds  

Science Conference Proceedings (OSTI)

This paper shows that the synoptic variability of zonal and meridional midlatitude Pacific and Southern Ocean sea surface winds can be well described by a univariate stochastic dynamical system directly derived from data. The method used to ...

Philip Sura

2003-02-01T23:59:59.000Z

212

NREL: Dynamic Maps, GIS Data, and Analysis Tools - Wind Data  

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

Wind Data Wind Data The available datasets are 50-meter height state-level and regional coverages and 25-kilometer national coverage. Please note that a 50-meter height national coverage is not available. We do not have data or contacts for Alabama, Florida, Louisiana or Mississippi. If you have questions, please contact the Webmaster. State and national 30-meter, 80-meter and offshore data at 80-meter height data used in the maps located at the Wind Powering America and U.S. DOE EERE websites can be purchased from AWS TruePower. 50-Meter Resolution (50-meter height above surface) These datasets are geographic shapefiles generated from the original raster data. The original raster data varied in resolution from 200-meter to 1000-meter cell sizes. The data provide an estimate of annual average wind

213

Coupled dynamics and economic analysis of floating wind turbine systems  

E-Print Network (OSTI)

Against the backdrop of rising oil prices and increasing uncertainty in the future of energy and the health of the environment, wind energy is distinguished as a leading technology that is both technologically and economically ...

Wayman, E. N. (Elizabeth N.)

2006-01-01T23:59:59.000Z

214

Passive aeroelastic tailoring of wind turbine blades : a numerical analysis  

E-Print Network (OSTI)

This research aims to have an impact towards a sustainable energy supply. In wind power generation losses occur at tip speed ratios which the rotor was not designed for. Since the ideal blade shape changes nonlinearly with ...

Deilmann, Christian

2009-01-01T23:59:59.000Z

215

Dynamic analysis of a 5 megawatt offshore floating wind turbine  

E-Print Network (OSTI)

of wind turbine. Rating Control Rotor Radius Rated Windturbines is a major design consideration due to cyclic loading induced by the rotating rotors [the turbine. The base was assumed to be fixed and the rotor

Harriger, Evan Michael

2011-01-01T23:59:59.000Z

216

Ex Post Analysis of Economic Impacts from Wind Power Development...  

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

was capable of genera?ng >3% of the na?on's electricity supply * Studies have shown that wind energy could one---day meet at least 20% of U.S. electric supply 2 * Some...

217

Loads Analysis of a Floating Offshore Wind Turbine Using Fully Coupled Simulation: Preprint  

SciTech Connect

This paper presents the use of fully coupled aero-hydro-servo-elastic simulation tools to perform a loads analysis of a 5-MW offshore wind turbine supported by a barge with moorings, one of many promising floating platform concepts.

Jonkman, J. M.; Buhl, M. L., Jr.

2007-06-01T23:59:59.000Z

218

Further Analysis of the Composite Wind and Thermodynamic Structure of the 12 September GATE Squall Line  

Science Conference Proceedings (OSTI)

An objective analysis technique is applied to the time-composite wind and thermodynamic fields of the 12 September GATE tropical squall line. Previous subjective analyses described by Gamache and Houze are confirmed and several new results are ...

John F. Gamache; Robert A. Houze Jr.

1985-08-01T23:59:59.000Z

219

An Improved Time Interpolation for Three-Dimensional Doppler Wind Analysis  

Science Conference Proceedings (OSTI)

A temporal interpolation is required for three-dimensional Doppler wind analysis when the precise measurement time is counted for each radar beam position. The time interpolation is traditionally done by a linear scheme either in the measurement ...

Shun Liu; Chongjian Qiu; Qin Xu; Pengfei Zhang

2004-10-01T23:59:59.000Z

220

Millville Wind Turbine Generator: failure analysis and corrective design modification  

DOE Green Energy (OSTI)

Fatigue cracks in the blade skins of the Millville Wind Turbine Generator were fractographically analyzed. It is believed they were caused by large flapwise deflections during a wind storm on December 4, 1978. The deflections caused the skin to buckle, which initiated rapidly growing fatigue cracks. Propagation continued to the leading edge, moving radially inward and outward along the leading edge radius. Communication between Rockwell and Millville resulted in a modified blade design which incorporates several corrective techniques.

Waldon, C.A.; Carr, M.J.; Grotzky, V.K.

1979-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "wind atlas analysis" 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

Statistical analysis of summer winds in Geysers area prior to ASCOT 1979 experiment  

DOE Green Energy (OSTI)

Statistical analytical techniques were tested on 73 days and 16 stations of hourly data for the summer of 1977. These stations were located in the region surrounding the Geysers geothermal area. Principal components analysis (PCA) was used to define typical wind patterns in the region and to determine typical days for each station. Power spectral analysis was used to quantify the temporal variation of winds at Anderson Ridge and Anderson Springs (two stations included in the ASCOT 1979 study in the local region of Anderson Creek with very different terrain exposures). These results will help determine year to year difference in the wind fields in the ASCOT study region of complex terrain.

Porch, W.M.; Walton, J.J.

1980-02-01T23:59:59.000Z

222

Commissioning of the ATLAS pixel detector  

E-Print Network (OSTI)

Commissioning of the ATLAS pixel detector Tobias GollingUniversity of California. Commissioning of the ATLAS pixelof the past and future commissioning activities of the ATLAS

Golling, Tobias; ATLAS Collaboration

2009-01-01T23:59:59.000Z

223

Transmission/Permitting Atlas | Open Energy Information  

Open Energy Info (EERE)

Atlas < Transmission Jump to: navigation, search PermittingAtlasHeader.png Roadmap Compare States General Transmission Dashboard Permitting Atlas Compare States Arizona California...

224

Western Wind and Solar Integration Study: Hydropower Analysis  

DOE Green Energy (OSTI)

The U.S. Department of Energy's (DOE) study of 20% Wind Energy by 2030 was conducted to consider the benefits, challenges, and costs associated with sourcing 20% of U.S. energy consumption from wind power by 2030. This study found that with proactive measures, no insurmountable barriers were identified to meet the 20% goal. Following this study, DOE and the National Renewable Energy Laboratory (NREL) conducted two more studies: the Eastern Wind Integration and Transmission Study (EWITS) covering the eastern portion of the U.S., and the Western Wind and Solar Integration Study (WWSIS) covering the western portion of the United States. The WWSIS was conducted by NREL and research partner General Electric (GE) in order to provide insight into the costs, technical or physical barriers, and operational impacts caused by the variability and uncertainty of wind, photovoltaic, and concentrated solar power when employed to serve up to 35% of the load energy in the WestConnect region (Arizona, Colorado, Nevada, New Mexico, and Wyoming). WestConnect is composed of several utility companies working collaboratively to assess stakeholder and market needs to and develop cost-effective improvements to the western wholesale electricity market. Participants include the Arizona Public Service, El Paso Electric Company, NV Energy, Public Service of New Mexico, Salt River Project, Tri-State Generation and Transmission Cooperative, Tucson Electric Power, Xcel Energy and the Western Area Power Administration.

Acker, T.; Pete, C.

2012-03-01T23:59:59.000Z

225

Argonne Physics Division - ATLAS  

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

Facility Facility Stable Beams Radioactive Beams CARIBU Beams Floorplan Phone Map Experimental Equipment Control System (internal) The ATLAS Facility ATLAS Operations Group The ATLAS Operations Group. ATLAS (the Argonne Tandem Linac Accelerator System) is the world's first superconducting accelerator for projectiles heavier than the electron. This unique system is a DOE National Collaborative Research Facility open to scientists from all over the world. ATLAS consists of a sequence of machines where each accelerates charged atoms and then feeds the beam into the next section for additional energy gain. The beams are provided by one of two 'injector' accelerators, either a 9 million volt (MV) electrostatic tandem Van de Graff, or a new 12-MV low-velocity linac and electron

226

Short Circuit Analysis of Induction Machines Wind Power Application  

Science Conference Proceedings (OSTI)

he short circuit behavior of Type I (fixed speed) wind turbine-generators is analyzed in this paper to aid in the protection coordination of wind plants of this type. A simple network consisting of one wind turbine-generator is analyzed for two network faults: a three phase short circuit and a phase A to ground fault. Electromagnetic transient simulations and sequence network calculations are compared for the two fault scenarios. It is found that traditional sequence network calculations give accurate results for the short circuit currents in the balanced fault case, but are inaccurate for the un-faulted phases in the unbalanced fault case. The time-current behavior of the fundamental frequency component of the short circuit currents for both fault cases are described, and found to differ significantly in the unbalanced and balanced fault cases

Starke, Michael R [ORNL; Smith, Travis M [ORNL; Howard, Dustin [Georgia Institute of Technology; Harley, Ronald [Georgia Institute of Technology

2012-01-01T23:59:59.000Z

227

A Tree Swaying in a Turbulent Wind: A Scaling Analysis  

E-Print Network (OSTI)

A tentative scaling theory is presented of a tree swaying in a turbulent wind. It is argued that the turbulence of the air within the crown is in the inertial regime, An eddy causes a dynamic bending response of the branches according to a time criterion. The resulting expression for the penetration depth of the wind yields an exponent which is in agreement with that pertaining to the morphology of the tree branches. An energy criterion shows that the dynamics of the branches is basically passive. The possibility of hydrodynamic screening by the leaves is discussed.

Theo Odijk

2013-05-29T23:59:59.000Z

228

Commercialization analysis of large wind energy conversion systems. Final report  

DOE Green Energy (OSTI)

The framework is described that can be used to evaluate potential new federal incentives to facilitate the market acceptance of utility-scale wind energy conversion systems. The insights gained from utilizing this framework to evaluate a variety of hypothetical federal incentives are discussed. The heart of the evaluation framework is an explicit representation of the decisions made by utility purchasers, suppliers, and government agencies with respect to the utilization and fabrication of large wind energy conversion systems. The demand-side and supply-side aspects of the multiparty commercialization model are described, and the model's struture is explained. (LEW)

Boyd, D.W.; Buckley, O.E.; Haas, S.M.

1980-06-01T23:59:59.000Z

229

El Roque de Los Muchachos Site Characteristics. II. Analysis of Wind, Relative Humidity and Air Pressure  

E-Print Network (OSTI)

In this paper we present an analysis of wind speed, wind direction, relative humidity and air pressure taken at TNG, CAMC and NOT at Observatorio del Roque de Los Muchachos, in the Canary Islands. Data are compared in order to check local variations and both long term and short term trends of the microclimate. Furthermore, influence of wind speed on the astronomical seeing is estimated to the aim to better understand the influence of wide scale parameters on local meteorological data. The three telescopes show different prevailing wind direction, wind speed, relative humidity and air pressure confirming differences in local microclimate. We found that seeing deteriorates when wind speed is lower than 3.3 m/s. Comparison in terms of wind speed and high relative humidity (> 90%) shows that TNG seems to have optimal observational conditions with respect to CAMC and NOT. Air pressure analysis shows that ORM is dominated by high pressure. Short time variations of pressure anticipate temperature variations tipically by 2-3 hours, this property vanishes in time scales higher than some hours and disappear in longer time scales.

G. Lombardi; V. Zitelli; S. Ortolani; M. Pedani

2007-02-21T23:59:59.000Z

230

Design, Analysis, and Learning Control of a Robotic Wind Turbine J. Zico Kolter, Zachary Jackowski, Russ Tedrake*  

E-Print Network (OSTI)

. Second, we note that single turbine installations are be- coming rather uncommon: most commercial windDesign, Analysis, and Learning Control of a Robotic Wind Turbine J. Zico Kolter, Zachary Jackowski, and improvements to wind turbine design and control can have a significant impact on energy sustainability

Jackson, Daniel

231

Analysis of Wind Power and Load Data at Multiple Time Scales  

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

Analysis of Wind Power and Load Data at Multiple Time Scales Analysis of Wind Power and Load Data at Multiple Time Scales Title Analysis of Wind Power and Load Data at Multiple Time Scales Publication Type Report LBNL Report Number LBNL-4147E Year of Publication 2010 Authors Coughlin, Katie, and Joseph H. Eto Date Published 12/2010 Publisher LBNL City Berkeley Keywords renewable generation integration Abstract In this study we develop and apply new methods of data analysis for high resolution wind power and system load time series, to improve our understanding of how to characterize highly variable wind power output and the correlations between wind power and load. These methods are applied to wind and load data from the ERCOT region, and wind power output from the PJM and NYISO areas. We use a wavelet transform to apply mathematically well-defined operations of smoothing and differencing to the time series data. This approach produces a set of time series of the changes in wind power and load (or "deltas"), over a range of times scales from a few seconds to approximately one hour. A number of statistical measures of these time series are calculated. We present sample distributions, and devise a method for fitting the empirical distribution shape in the tails. We also evaluate the degree of serial correlation, and linear correlation between wind and load. Our examination of the data shows clearly that the deltas do not follow a Gaussian shape; the distribution is exponential near the center and appears to follow a power law for larger fluctuations. Gaussian distributions are frequently used in modeling studies. These are likely to over-estimate the probability of small to moderate deviations. This in turn may lead to an over-estimation of the additional reserve requirement (hence the cost) for high penetration of wind. The Gaussian assumption provides no meaningful information about the real likelihood of large fluctuations. The possibility of a power law distribution is interesting because it suggests that the distribution shape for of wind power fluctuations may become independent of system size for large enough systems.

232

Software Development, Modeling, and Analysis: We're Developing Advanced Design Tools to Support the Wind Industry with "State-of-the-Art" Analysis Capability (Fact Sheet)  

SciTech Connect

This fact sheet provides an overview of the software development, modeling, and analysis for wind turbine performance, loads, and stabiluty analysis.

2010-01-01T23:59:59.000Z

233

Software Development, Modeling, and Analysis: We're Developing Advanced Design Tools to Support the Wind Industry with "State-of-the-Art" Analysis Capability (Fact Sheet)  

DOE Green Energy (OSTI)

This fact sheet provides an overview of the software development, modeling, and analysis for wind turbine performance, loads, and stabiluty analysis.

Not Available

2010-01-01T23:59:59.000Z

234

Observations and Scale Analysis of Coastal Wind Jets  

Science Conference Proceedings (OSTI)

Blocking of onshore flow by coastal mountains was observed south of Vancouver Island, British Columbia, by the NOAA P-3 aircraft on 1 December 1993. Winds increased from 10 m s?1 offshore to 15 m s?1 nearshore and became more parallel to shore in ...

James E. Overland; Nicholas A. Bond

1995-10-01T23:59:59.000Z

235

Analysis on DFIG Wind Power System Low-Voltage Ridethrough  

Science Conference Proceedings (OSTI)

Due to the double fed induction generators (DFIG) advantage of controlling active and reactive power independently and partial power converter, DFIG is becoming a popular type of wind power generation system. Nowadays, the grid code demands that ... Keywords: VSCF, DFIG, LVRT, Crowbar, Voltage sags

Yulong Wang; Jianlin Li; Shuju Hu; Honghua Xu

2009-04-01T23:59:59.000Z

236

Sensitivity Analysis of Offshore Wind Cost of Energy (Poster), NREL (National Renewable Energy Laboratory)  

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

Plant Sensitivity Analysis Plant Sensitivity Analysis Abstract NREL Wind Energy Systems Engineering Tool Sensitivity Analysis and Results Sensitivity Analysis of Offshore Wind Cost of Energy Sensitivity Analysis of Offshore Wind Cost of Energy K. Dykes, A. Ning, P. Graf, G. Scott, R. Damiani, M. Hand, R. Meadows, W. Musial, P. Moriarty, P. Veers * National Renewable Energy Laboratory * Golden, Colorado K. Dykes, A. Ning, P. Graf, G. Scott, R. Damiani, M. Hand, R. Meadows, W. Musial, P. Moriarty, P. Veers * National Renewable Energy Laboratory * Golden, Colorado Introduction OFFSHORE WINDPOWER 2012, Virginia Beach, October 911, 2012 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. NREL/PO-5000-56411

237

Wind energy Computerized Maintenance Management System (CMMS) : data collection recommendations for reliability analysis.  

DOE Green Energy (OSTI)

This report addresses the general data requirements for reliability analysis of fielded wind turbines and other wind plant equipment. The report provides a rationale for why this data should be collected, a list of the data needed to support reliability and availability analysis, and specific data recommendations for a Computerized Maintenance Management System (CMMS) to support automated analysis. This data collection recommendations report was written by Sandia National Laboratories to address the general data requirements for reliability analysis of operating wind turbines. This report is intended to help develop a basic understanding of the data needed for reliability analysis from a Computerized Maintenance Management System (CMMS) and other data systems. The report provides a rationale for why this data should be collected, a list of the data needed to support reliability and availability analysis, and specific recommendations for a CMMS to support automated analysis. Though written for reliability analysis of wind turbines, much of the information is applicable to a wider variety of equipment and analysis and reporting needs. The 'Motivation' section of this report provides a rationale for collecting and analyzing field data for reliability analysis. The benefits of this type of effort can include increased energy delivered, decreased operating costs, enhanced preventive maintenance schedules, solutions to issues with the largest payback, and identification of early failure indicators.

Peters, Valerie A.; Ogilvie, Alistair B.

2012-01-01T23:59:59.000Z

238

Fatigue analysis of WECS (Wind Energy Conversion System) components using a rainflow counting algorithm  

Science Conference Proceedings (OSTI)

A rainflow counting algorithm'' has been incorporated into the LIFE2 fatigue/fracture analysis code for wind turbines. The count algorithm, with its associated pre- and post-count algorithms, permits the code to incorporate time-series data into its analysis scheme. After a description of the algorithms used here, their use is illustrated by the examination of stress-time histories from the Sandia 34-m Test Bed vertical axis wind turbine. The results of the rainflow analysis are compared and contrasted to previously reported predictions for the service lifetime of the fatigue critical component for this turbine. 14 refs., 8 figs., 3 tabs.

Sutherland, H.J.; Schluter, L.L.

1990-01-01T23:59:59.000Z

239

Analysis on Control Method VSCF Wind Power System  

Science Conference Proceedings (OSTI)

By analyzing the operation behavior of an A.C. excited variable-speed constant-frequency (VSCF) wind-power generator, the field-oriented vector control technique and and the internal model controller (IMC) are transplanted into the voltage control of ... Keywords: Doubly-fed induction generator, pitch control, field oriented vector control, internal model controller, fuzzy-PD controller, Variable-speed constant frequency

Wang Yulong; Shao Guiping

2008-12-01T23:59:59.000Z

240

Analysis of Wind Power and Load Data at Multiple Time Scales  

SciTech Connect

In this study we develop and apply new methods of data analysis for high resolution wind power and system load time series, to improve our understanding of how to characterize highly variable wind power output and the correlations between wind power and load. These methods are applied to wind and load data from the ERCOT region, and wind power output from the PJM and NYISO areas. We use a wavelet transform to apply mathematically well-defined operations of smoothing and differencing to the time series data. This approach produces a set of time series of the changes in wind power and load (or ?deltas?), over a range of times scales from a few seconds to approximately one hour. A number of statistical measures of these time series are calculated. We present sample distributions, and devise a method for fitting the empirical distribution shape in the tails. We also evaluate the degree of serial correlation, and linear correlation between wind and load. Our examination of the data shows clearly that the deltas do not follow a Gaussian shape; the distribution is exponential near the center and appears to follow a power law for larger fluctuations. Gaussian distributions are frequently used in modeling studies. These are likely to over-estimate the probability of small to moderate deviations. This in turn may lead to an over-estimation of the additional reserve requirement (hence the cost) for high penetration of wind. The Gaussian assumption provides no meaningful information about the real likelihood of large fluctuations. The possibility of a power law distribution is interesting because it suggests that the distribution shape for of wind power fluctuations may become independent of system size for large enough systems.

Coughlin, Katie; Eto, J.H.

2010-12-20T23:59:59.000Z

Note: This page contains sample records for the topic "wind atlas analysis" 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

Commissioning of the ATLAS Experiment  

E-Print Network (OSTI)

The status of the commissioning of the ATLAS experiment as of May 2008 is presented. The sub-detector integration in recent milestone weeks is described. Cosmic commissioning in milestone week M6 included simultaneous data-taking and combined track analysis of the muon detector and inner detector, as well as combined analysis of muon detector and muon trigger. The calorimeters have achieved near-full operation, and are integrated with the calorimeter trigger. The high-level-trigger infrastructure is being installed and algorithms tested in technical runs.

Juergen Thomas; for the ATLAS Collaboration at CERN

2008-08-07T23:59:59.000Z

242

Approach to the fatigue analysis of vertical-axis wind-turbine blades  

DOE Green Energy (OSTI)

A cursory analysis of the stress history of wind turbine blades indicates that a single stress level at each wind speed does not adequately describe the blade stress history. A statistical description is required. Blade stress data collected from the DOE/ALCOA Low Cost experimental turbines indicate that the Rayleigh probability density function adequately describes the distribution of vibratory stresses at each wind speed. The Rayleigh probability density function allows the distribution of vibratory stresses to be described by the RMS of the stress vs. time signal. With the RMS stress level described for all wind speeds, the complete stress history of the turbine blades is known. Miner's linear cumulative damage rule is used as a basis for summing the fatigue damage over all operating conditions. An analytical expression is derived to predict blade fatigue life.

Veers, P.S.

1981-09-01T23:59:59.000Z

243

GPP user`s guide - a general-purpose postprocessor for wind turbine data analysis  

DOE Green Energy (OSTI)

GPP (pronounced {open_quotes}jeep{close_quotes}) is a General-Purpose Postprocessor for wind turbine data analysis. The author, a member of the Wind Technology Division (WTD) of the National Renewable Energy Laboratory (NREL), developed GPP to postprocess test data and simulation predictions. GPP reads data into large arrays and allows the user to run many types of analyses on the data stored in memory. It runs on inexpensive computers common in the wind industry. One can even use it on a laptop in the field. The author wrote the program in such a way as to make it easy to add new types of analyses and to port it to many types of computers. Although GPP is very powerful and feature-rich, it is still very easy to learn and to use. Exhaustive error trapping prevents one from losing valuable work due to input errors. GPP will, hopefully, make a significant impact on engineering productivity in the wind industry.

Buhl, M.L. Jr.

1995-01-01T23:59:59.000Z

244

Atlas | OpenEI  

Open Energy Info (EERE)

Atlas Atlas Dataset Summary Description (Abstract): The Brazilian Atlas of Solar Energy is divided into five distinct sections. The first section describes the methodology used to obtain the solar radiation data and to produce the solar maps. The second section contains information on the confidence levels of the methodology employed, obtained by comparing solar estimates provided by BRASIL- SR model with estimates provided by other models and ground data. The third section presents the maps of various solar radiation components (global, direct, diffuse, tilted plane, and PAR). Source INPE - National Institute for Space Research Date Released December 31st, 2006 (8 years ago) Date Updated November 08th, 2007 (7 years ago) Keywords América Latina Atlas

245

Argonne Physics Division - ATLAS  

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

are nearing completion. In addition, the role of ATLAS for the low-energy nuclear physics community needs to be revisited in light of the decision to site the Facility for...

246

Variance Analysis of Wind and Natural Gas Generation under Different Market Structures: Some Observations  

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

Variance Analysis of Wind and Variance Analysis of Wind and Natural Gas Generation under Different Market Structures: Some Observations Brian Bush, Thomas Jenkin, David Lipowicz, and Douglas J. Arent National Renewable Energy Laboratory Roger Cooke Resources for the Future Technical Report NREL/TP-6A20-52790 January 2012 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401 303-275-3000 * www.nrel.gov Contract No. DE-AC36-08GO28308 Variance Analysis of Wind and Natural Gas Generation under Different Market Structures: Some Observations Brian Bush, Thomas Jenkin, David Lipowicz,

247

ATLAS trigger for first physics and beyond  

E-Print Network (OSTI)

ATLAS is a multi-purpose spectrometer built to perform precision measurements of Standard Model parameters and is aiming at discovery of Higgs particle, Super Symmetry and possible other physics channels beyond Standard Model. Operating at 14 TeV center of mass energy ATLAS will see 40 million events per second at nominal luminosity with about 25 overlapping interactions. Most of the events are inelastic proton-proton interactions with only few W, Z bosons or ttbar pairs produced each second, and expectations for Higgs or SUSY production cross-section are much smaller than that. ATLAS trigger has a difficult task to select one out of $10^5$ events online and to ensure that most physics channels of interests are preserved for analysis. In this talk we will review the design of ATLAS trigger system, the trigger menu prepared for initial LHC run as well as for high luminosity run. The expected trigger performance of the base-line ATLAS physics programs will be reviewed and first results from the commissioning pe...

Fonseca-Martin, T

2009-01-01T23:59:59.000Z

248

ATLAS distributed computing: experience and evolution  

E-Print Network (OSTI)

The ATLAS experiment has just concluded its first running period which commenced in 2010. After two years of remarkable performance from the LHC and ATLAS, the experiment has accumulated more than 25/fb of data. The total volume of beam and simulated data products exceeds 100~PB distributed across more than 150 computing centres around the world, managed by the experiment's distributed data management system. These sites have provided up to 150,000 computing cores to ATLAS's global production and analysis processing system, enabling a rich physics programme including the discovery of the Higgs-like boson in 2012. The wealth of accumulated experience in global data-intensive computing at this massive scale, and the considerably more challenging requirements of LHC computing from 2015 when the LHC resumes operation, are driving a comprehensive design and development cycle to prepare a revised computing model together with data processing and management systems able to meet the demands of higher trigger rates, e...

Nairz, A; The ATLAS collaboration

2013-01-01T23:59:59.000Z

249

NREL: Wind Research - Wind Resource Assessment  

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

Wind Resource Assessment Wind Resource Assessment A map of the United States is color-coded to indicate the high winds at 80 meters. This map shows the wind resource at 80 meters for both land-based and offshore wind resources in the United States. Correct estimation of the energy available in the wind can make or break the economics of wind plant development. Wind mapping and validation techniques developed at the National Wind Technology Center (NWTC) along with collaborations with U.S. companies have produced high-resolution maps of the United States that provide wind plant developers with accurate estimates of the wind resource potential. State Wind Maps International Wind Resource Maps Dynamic Maps, GIS Data, and Analysis Tools Due to the existence of special use airspace (SUA) (i.e., military airspace

250

Techniques for assessing the wind energy resource in the North Central region  

SciTech Connect

The US Department of Energy has sponsored the development of regional wind energy resource atlases for twelve regions of the United States. The North Central Region, which consists of North Dakota, South Dakota, Nebraska, Minnesota, and Iowa, was one of the regions for which an atlas was assembled. This report is a description of observational and analytical techniques used in the development of the North Central region's wind energy resource atlas.

Freeman, D.L.

1981-03-01T23:59:59.000Z

251

Evaluating state markets for residential wind systems: Results from an economic and policy analysis tool  

DOE Green Energy (OSTI)

The market for small wind systems in the United States, often defined as systems less than or equal to 100 kW that produce power on the customer side of the meter, is small but growing steadily. The installed capacity of domestic small wind systems in 2002 was reportedly 15-18 MW, though the market is estimated to be growing by as much as 40 percent annually (AWEA, 2002). This growth is driven in part by recent technology advancements and cost improvements and, perhaps more importantly, by favorable policy incentives targeted at small wind systems that are offered in several states. Currently, over half of all states have incentive policies for which residential small wind installations are eligible. These incentives range from low-interest loan programs and various forms of tax advantages to cash rebates that cover as much as 60 percent of the total system cost for turbines 10 kW or smaller installed in residential applications. Most of these incentives were developed to support a ran ge of emerging renewable technologies (most notably photovoltaic systems), and were therefore not specifically designed with small wind systems in mind. As such, the question remains as to which incentive types provide the greatest benefit to small wind systems, and how states might appropriately set the level and type of incentives in the future. Furthermore, given differences in incentive types and levels across states, as well as variations in retail electricity rates and other relevant factors, it is not immediately obvious which states offer the most promising markets for small wind turbine manufacturers and installers, as well as potential residential system owners. This paper presents results from a Berkeley Lab analysis of the impact of existing and proposed state and federal incentives on the economics of grid-connected, residential small wind systems. Berkeley Lab has designed the Small Wind Analysis Tool (SWAT) to compare system economics under current incentive structures a cross all 50 states. SWAT reports three metrics to characterize residential wind economics in each state and wind resource class: (1) Break-Even Turnkey Cost (BTC): The BTC is defined as the aggregate installed system cost that would balance total customer payments and revenue over the life of the system, allowing the customer to ''break-even'' while earning a specified rate of return on the small wind ''investment.'' (2) Simple Payback (SP): The SP is the number of years it takes a customer to recoup a cash payment for a wind system and all associated costs, assuming zero discount on future revenue and payments (i.e., ignoring the time value of money). (3) Levelized Cost of Energy (LCOE): The LCOE is the levelized cost of generating a kWh of electricity over the lifetime of the system, and is calculated assuming a cash purchase for the small wind system and a 5.5 percent real discount rate. This paper presents SWAT results for a 10 kW wind turbine and turbine power production is based on a Bergey Excel system. These results are not directly applicable to turbines with different power curves and rated outputs, especially given the fact that many state incentives are set as a fixed dollar amount, and the dollar per Watt amount will vary based on the total rated turbine capacity.

Edwards, Jennifer L.; Wiser, Ryan; Bolinger, Mark; Forsyth, Trudy

2004-12-01T23:59:59.000Z

252

Stability analysis of a variable-speed wind turbine  

DOE Green Energy (OSTI)

This paper examines the elastomechanical stability of a four-bladed wind turbine over a specific rotor speed range. Stability modes, frequencies, and dampings are extracted using a specialized modal processor developed at NREL that post-processes the response data generated by the ADAMS simulation code. The processor can analyze a turbine with an arbitrary number of rotor blades and offers a novel capability of isolating stability modes that become locked at a single frequency. Results indicate that over a certain rotor speed range, the tower lateral mode and the rotor regressive in-plane mode coalesce, resulting in a self-excited instability. Additional results show the effect of tower and nacelle parameters on the stability boundaries.

Bir, G.S.; Wright, A.D.; Butterfield, C.P.

1996-10-01T23:59:59.000Z

253

Principal Component Analysis of the Summertime Winds over the Gulf of California: A Gulf Surge Index  

Science Conference Proceedings (OSTI)

A principal component analysis of the summertime near-surface Quick Scatterometer (QuikSCAT) winds is used to identify the leading mode of synoptic-scale variability of the low-level flow along the Gulf of California during the North American ...

Simona Bordoni; Bjorn Stevens

2006-11-01T23:59:59.000Z

254

Analysis of Alternative Extensions of the Existing Production Tax Credit for Wind Generator  

Reports and Publications (EIA)

Requestor: Ms. Janice Mays, Chief Counsel, Committee on Ways & Means, U.S. House of RepresentativesThis is a letter response requesting analysis of alternative extensions of the existing production tax credit (PTC) that would apply to wind generators only.

Information Center

2007-05-01T23:59:59.000Z

255

Real-Time Analysis of Local Wind Patterns for Application to Nuclear-Emergency Response  

Science Conference Proceedings (OSTI)

Pacific Gas and Electric Company (PGandE) has sponsored development of a computer-based system for real-time analysis of local wind measurements in a complex-terrain setting. Mass-consistent modeling of tower- and Doppler-sounder data produces ...

Richard H. Thuillier

1987-09-01T23:59:59.000Z

256

Nettuno: Analysis of a Wind and Wave Forecast System in the Mediterranean Sea  

Science Conference Proceedings (OSTI)

Nettuno is a wind and wave forecast system in the Mediterranean Sea. It has been operational since 2009 producing twice a day high resolution forecasts for the next 72 hours. We have carried out a detailed analysis of the results, both in space ...

Luciana Bertotti; Luigi Cavaleri; Layla Loffredo; Lucio Torrisi

257

A sensitivity analysis of the treatment of wind energy in the AEO99 version of NEMS  

DOE Green Energy (OSTI)

Each year, the U.S. Department of Energy's Energy Information Administration (EIA) publishes a forecast of the domestic energy economy in the Annual Energy Outlook (AEO). During the forecast period of the AEO (currently through 2020), renewable energy technologies have typically not achieved significant growth. The contribution of renewable technologies as electric generators becomes more important, however, in scenarios analyzing greenhouse gas emissions reductions or significant technological advancements. We examined the economic assumptions about wind power used for producing forecasts with the National Energy Modeling System (NEMS) to determine their influence on the projected capacity expansion of this technology. This analysis should help illustrate to policymakers what types of issues may affect wind development, and improve the general understanding of the NEMS model itself. Figure 1 illustrates the model structure and factors relevant to wind deployment. We found that NEMS uses various cost multipliers and constraints to represent potential physical and economic limitations to growth in wind capacity, such as resource depletion, costs associated with rapid manufacturing expansion, and grid stability with high levels of capacity from intermittent resources. The model's flexibility allows the user to make alternative assumptions about the magnitude of these factors. While these assumptions have little effect on the Reference Case forecast for the 1999 edition of the AEO, they can make a dramatic difference when wind is more attractive, such as under a carbon permit trading system. With $100/ton carbon permits, the wind capacity projection for 2020 ranges from 15 GW in the unaltered model (AEO99 Reference Case) to 168 GW in the extreme case when all the multipliers and constraints examined in this study are removed. Furthermore, if modifications are made to the model allowing inter-regional transmission of electricity, wind capacity is forecast to reach 214 GW when all limitations are removed. The figures in the upper end of these ranges are not intended to be viewed as reasonable projections, but their magnitude illustrates the importance of the parameters governing the growth of wind capacity and resource availability in forecasts using NEMS. In addition, many uncertainties exist regarding these assumptions that potentially affect the growth of wind power. We suggest several areas in which to focus future research in order to better model the potential development of this resource. Because many of the assumptions related to wind in the model are also used for other renewable technologies, these suggestions could be applied to other renewable resources as well.

Osborn, Julie G; Wood, Frances; Richey, Cooper; Sanders, Sandy; Short, Walter; Koomey, Jonathan

2001-01-01T23:59:59.000Z

258

IRENA launches global atlas of renewable energy potential | OpenEI  

Open Energy Info (EERE)

IRENA launches global atlas of renewable energy potential IRENA launches global atlas of renewable energy potential Home > Groups > Utility Rate Graham7781's picture Submitted by Graham7781(2002) Super contributor 11 February, 2013 - 15:18 data Global Atlas IRENA OpenEI Renewable Energy Solar Wind The International Renewable Energy Agency (IRENA) recently launched the Global Atlas project in January, bringing robust tools and maps of renewable energy potential to your fingertips. OpenEI is also involved, serving as a portal to the IRENA global atlas on our platform. The aim of the platform is to give users a comprehensive look at global renewable energy resources so that informed decisions can be made about a cost-effective combination of technologies country-by-country, as well as whether a particular country has the market to make benefit from

259

Analysis of Wind Power and Load Data at Multiple Time Scales  

E-Print Network (OSTI)

The spectrum of power from wind turbines. Journal of PowerAWEA 2010. American Wind Energy Association ProjectsErik and Jason Kemper. 2009. Wind Plant Ramping Behavior.

Coughlin, Katie

2011-01-01T23:59:59.000Z

260

Analysis of Wind Power and Load Data at Multiple Time Scales  

E-Print Network (OSTI)

AWEA 2010. American Wind Energy Association ProjectsR Liao. 2006. Analyses of Wind Energy Impact on WFEC Systemresources. The American Wind Energy Association maintains a

Coughlin, Katie

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "wind atlas analysis" 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

A sensitivity analysis of the treatment of wind energy in the AEO99 version of NEMS  

E-Print Network (OSTI)

Documentation Report: Wind Energy Submodule (WES). DOE/EIA-The Economic Value of Wind Energy at High Power System5 The Wind Energy Submodule (

Osborn, Julie G.; Wood, Frances; Richey, Cooper; Sanders, Sandy; Short, Walter; Koomey, Jonathan

2001-01-01T23:59:59.000Z

262

An Analysis of One-Second Wind Power Plant Power Fluctuations  

Science Conference Proceedings (OSTI)

An analysis of one-second power data from a group of fifteen 600-kW turbines installed in Hawaii shows that the operation of a wind power plant tends to smooth out the power fluctuations caused by individual turbines. As this EPRI project demonstrates, any change in power over a one-second period results in power levels within plus or minus 5% of the original power level of the original power level of the wind plant, though much larger variations occur in individual turbine output.

1994-09-27T23:59:59.000Z

263

Project: Wind Engineering and Multi-Hazard Failure Analysis  

Science Conference Proceedings (OSTI)

... existing data, and spatial statistics, to develop ... perform comprehensive review and statistical analysis of ... Speeds for Nuclear Power Plants (2011). ...

2013-01-02T23:59:59.000Z

264

Reliability Engineering for ATLAS Petascale Data Processing on the Grid  

E-Print Network (OSTI)

The ATLAS detector is in its third year of continuous LHC running taking data for physics analysis. A starting point for ATLAS physics analysis is reconstruction of the raw data. First-pass processing takes place shortly after data taking, followed later by reprocessing of the raw data with updated software and calibrations to improve the quality of the reconstructed data for physics analysis. Data reprocessing involves a significant commitment of computing resources and is conducted on the Grid. The reconstruction of one petabyte of ATLAS data with 1B collision events from the LHC takes about three million core-hours. Petascale data processing on the Grid involves millions of data processing jobs. At such scales, the reprocessing must handle a continuous stream of failures. Automatic job resubmission recovers transient failures at the cost of CPU time used by the failed jobs. Orchestrating ATLAS data processing applications to ensure efficient usage of tens of thousands of CPU-cores, reliability engineering ...

Golubkov, D V; The ATLAS collaboration; Vaniachine, A V

2012-01-01T23:59:59.000Z

265

Argonne Physics Division - ATLAS  

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

REGISTRATION FORM REGISTRATION FORM Name: First Middle Last Organization: Department: Business Address: Street City State Zip Country Business Phone: Fax: E-mail: Citizenship: Additional information is needed for on-site access for non-US citizens who are not ATLAS Users. To download the form as a word document or pdf file, please go to the ATLAS user website (http://www.phy.anl.gov/atlas/users/visitor_info.html). Please return information to Barbara Weller by July 10, 2009. REGISTRATION Fees (If paying by check, please make check payable to: Argonne National Laboratory) Registration fee of $25 will be mailed? Pay at time of registration? Please state if you have special dietary needs. LODGING: Below are several area lodging facilities with rates and telephone numbers. Please make your reservation directly with the hotel. If you stay at the

266

Calorimetry Triggering in ATLAS  

Science Conference Proceedings (OSTI)

The ATLAS experiment is preparing for data taking at 14 TeV collision energy. A rich discovery physics program is being prepared in addition to the detailed study of Standard Model processes which will be produced in abundance. The ATLAS multi-level trigger system is designed to accept one event in 2/10{sup 5} to enable the selection of rare and unusual physics events. The ATLAS calorimeter system is a precise instrument, which includes liquid Argon electro-magnetic and hadronic components as well as a scintillator-tile hadronic calorimeter. All these components are used in the various levels of the trigger system. A wide physics coverage is ensured by inclusively selecting events with candidate electrons, photons, taus, jets or those with large missing transverse energy. The commissioning of the trigger system is being performed with cosmic ray events and by replaying simulated Monte Carlo events through the trigger and data acquisition system.

Igonkina, O.; /NIKHEF, Amsterdam; Achenbach, R.; /Kirchhoff Inst. Phys.; Adragna, P.; /Queen Mary, U. of London; Aharrouche, M.; /Mainz U., Inst. Phys.; Alexandre, G.; /Geneva U.; Andrei, V.; /Kirchhoff Inst. Phys.; Anduaga, X.; /La Plata U.; Aracena, I.; /SLAC; Backlund, S.; /CERN; Baines, J.; /Rutherford; Barnett, B.M.; /Rutherford; Bauss, B.; /Mainz U., Inst. Phys.; Bee, C.; /Marseille, CPPM; Behera, P.; /Iowa State U.; Bell, P.; /Manchester U.; Bendel, M.; /Mainz U., Inst. Phys.; Benslama, K.; /Regina U.; Berry, T.; /Royal Holloway, U. of London; Bogaerts, A.; /CERN; Bohm, C.; /Stockholm U.; Bold, T.; /UC, Irvine /AGH-UST, Cracow /Birmingham U. /Barcelona, IFAE /CERN /Birmingham U. /Rutherford /Montreal U. /Santa Maria U., Valparaiso /DESY /DESY, Zeuthen /Geneva U. /City Coll., N.Y. /Barcelona, IFAE /CERN /Birmingham U. /Kirchhoff Inst. Phys. /Birmingham U. /Lisbon, LIFEP /Rio de Janeiro Federal U. /City Coll., N.Y. /Birmingham U. /Copenhagen U. /Copenhagen U. /Brookhaven /Rutherford /Royal Holloway, U. of London /Pennsylvania U. /Montreal U. /SLAC /CERN /Michigan State U. /Chile U., Catolica /City Coll., N.Y. /Oxford U. /La Plata U. /McGill U. /Mainz U., Inst. Phys. /Hamburg U. /DESY /DESY, Zeuthen /Geneva U. /Queen Mary, U. of London /CERN /Rutherford /Rio de Janeiro Federal U. /Birmingham U. /Montreal U. /CERN /Kirchhoff Inst. Phys. /Liverpool U. /Royal Holloway, U. of London /Pennsylvania U. /Kirchhoff Inst. Phys. /Geneva U. /Birmingham U. /NIKHEF, Amsterdam /Rutherford /Royal Holloway, U. of London /Rutherford /Royal Holloway, U. of London /AGH-UST, Cracow /Mainz U., Inst. Phys. /Mainz U., Inst. Phys. /Birmingham U. /Hamburg U. /DESY /DESY, Zeuthen /Geneva U. /Kirchhoff Inst. Phys. /Michigan State U. /Stockholm U. /Stockholm U. /Birmingham U. /CERN /Montreal U. /Stockholm U. /Arizona U. /Regina U. /Regina U. /Rutherford /NIKHEF, Amsterdam /Kirchhoff Inst. Phys. /DESY /DESY, Zeuthen /City Coll., N.Y. /University Coll. London /Humboldt U., Berlin /Queen Mary, U. of London /Argonne /LPSC, Grenoble /Arizona U. /Kirchhoff Inst. Phys. /Birmingham U. /Antonio Narino U. /Hamburg U. /DESY /DESY, Zeuthen /Kirchhoff Inst. Phys. /Birmingham U. /Chile U., Catolica /Indiana U. /Manchester U. /Kirchhoff Inst. Phys. /Rutherford /City Coll., N.Y. /Stockholm U. /La Plata U. /Antonio Narino U. /Queen Mary, U. of London /Kirchhoff Inst. Phys. /Antonio Narino U. /Pavia U. /City Coll., N.Y. /Mainz U., Inst. Phys. /Mainz U., Inst. Phys. /Pennsylvania U. /Barcelona, IFAE /Barcelona, IFAE /Chile U., Catolica /Genoa U. /INFN, Genoa /Rutherford /Barcelona, IFAE /Nevis Labs, Columbia U. /CERN /Antonio Narino U. /McGill U. /Rutherford /Santa Maria U., Valparaiso /Rutherford /Chile U., Catolica /Brookhaven /Oregon U. /Mainz U., Inst. Phys. /Barcelona, IFAE /McGill U. /Antonio Narino U. /Antonio Narino U. /Kirchhoff Inst. Phys. /Sydney U. /Rutherford /McGill U. /McGill U. /Pavia U. /Genoa U. /INFN, Genoa /Kirchhoff Inst. Phys. /Kirchhoff Inst. Phys. /Mainz U., Inst. Phys. /Barcelona, IFAE /SLAC /Stockholm U. /Moscow State U. /Stockholm U. /Birmingham U. /Kirchhoff Inst. Phys. /DESY /DESY, Zeuthen /Birmingham U. /Geneva U. /Oregon U. /Barcelona, IFAE /University Coll. London /Royal Holloway, U. of London /Birmingham U. /Mainz U., Inst. Phys. /Birmingham U. /Birmingham U. /Oregon U. /La Plata U. /Geneva U. /Chile U., Catolica /McGill U. /Pavia U. /Barcelona, IFAE /Regina U. /Birmingham U. /Birmingham U. /Kirchhoff Inst. Phys. /Oxford U. /CERN /Kirchhoff Inst. Phys. /UC, Irvine /UC, Irvine /Wisconsin U., Madison /Rutherford /Mainz U., Inst. Phys. /CERN /Geneva U. /Copenhagen U. /City Coll., N.Y. /Wisconsin U., Madison /Rio de Janeiro Federal U. /Wisconsin U., Madison /Stockholm U. /University Coll. London

2011-12-08T23:59:59.000Z

267

Research results for the Tornado Wind-Energy system: analysis and conclusions  

DOE Green Energy (OSTI)

The Tornado Wind Energy System (TWES) concept utilizes a wind driven vortex confined by a hollow tower to create a low pressure core intended to serve as a turbine exhaust reservoir. The turbine inlet flow is provided by a separate ram air supply. Numerous experimental and analytical research efforts have investigated the potential of the TWES as a wind energy conversion system (WECS). The present paper summarizes and analyzes much of theresearch to date on the TWES. A simplified cost analysis incorporating these research results is also included. Based on these analyses, the TWES does not show significant promise of improving on either the performance or the cost of energy attainable by conventional WECS. The prospects for achieving either a system power coefficient above 0.20 or a cost of energy less than $0.50/kWh (1979 dollars) appear to be poor.

Jacobs, E.

1983-01-01T23:59:59.000Z

268

Simulation-Length Requirements in the Loads Analysis of Offshore Floating Wind Turbines: Preprint  

DOE Green Energy (OSTI)

The goal of this paper is to examine the appropriate length of a floating offshore wind turbine (FOWT) simulation - a fundamental question that needs to be answered to develop design requirements. To examine this issue, a loads analysis of an example FOWT was performed in FAST with varying simulation lengths. The offshore wind system used was the OC3-Hywind spar buoy, which was developed for use in the International Energy Agency Code Comparison Collaborative Project and supports NREL's offshore 5-megawatt baseline turbine. Realistic metocean data from the National Oceanic and Atmospheric Administration and repeated periodic wind files were used to excite the structure. The results of the analysis clearly show that loads do not increase for longer simulations. In regards to fatigue, a sensitivity analysis shows that the procedure used for counting half cycles is more important than the simulation length itself. Based on these results, neither the simulation length nor the periodic wind files affect response statistics and loads for FOWTs (at least for the spar studied here); a result in contrast to the offshore oil and gas industry, where running simulations of at least 3 hours in length is common practice.

Haid, L.; Stewart, G.; Jonkman, J.; Robertson, A.; Lackner, M.; Matha, D.

2013-06-01T23:59:59.000Z

269

Simulation-Length Requirements in the Loads Analysis of Offshore Floating Wind Turbines: Preprint  

SciTech Connect

The goal of this paper is to examine the appropriate length of a floating offshore wind turbine (FOWT) simulation - a fundamental question that needs to be answered to develop design requirements. To examine this issue, a loads analysis of an example FOWT was performed in FAST with varying simulation lengths. The offshore wind system used was the OC3-Hywind spar buoy, which was developed for use in the International Energy Agency Code Comparison Collaborative Project and supports NREL's offshore 5-megawatt baseline turbine. Realistic metocean data from the National Oceanic and Atmospheric Administration and repeated periodic wind files were used to excite the structure. The results of the analysis clearly show that loads do not increase for longer simulations. In regards to fatigue, a sensitivity analysis shows that the procedure used for counting half cycles is more important than the simulation length itself. Based on these results, neither the simulation length nor the periodic wind files affect response statistics and loads for FOWTs (at least for the spar studied here); a result in contrast to the offshore oil and gas industry, where running simulations of at least 3 hours in length is common practice.

Haid, L.; Stewart, G.; Jonkman, J.; Robertson, A.; Lackner, M.; Matha, D.

2013-06-01T23:59:59.000Z

270

Atmospheric Stability Impacts on Power Curves of Tall Wind Turbines - An Analysis of a West Coast North American Wind Farm  

SciTech Connect

Tall wind turbines, with hub heights at 80 m or above, can extract large amounts of energy from the atmosphere because they are likely to encounter higher wind speeds, but they face challenges given the complex nature of wind flow and turbulence at these heights in the boundary layer. Depending on whether the boundary layer is stable, neutral, or convective, the mean wind speed, direction, and turbulence properties may vary greatly across the tall turbine swept area (40 to 120 m AGL). This variability can cause tall turbines to produce difference amounts of power during time periods with identical hub height wind speeds. Using meteorological and power generation data from a West Coast North American wind farm over a one-year period, our study synthesizes standard wind park observations, such as wind speed from turbine nacelles and sparse meteorological tower observations, with high-resolution profiles of wind speed and turbulence from a remote sensing platform, to quantify the impact of atmospheric stability on power output. We first compare approaches to defining atmospheric stability. The standard, limited, wind farm operations enable the calculation only of a wind shear exponent ({alpha}) or turbulence intensity (I{sub U}) from cup anemometers, while the presence at this wind farm of a SODAR enables the direct observation of turbulent kinetic energy (TKE) throughout the turbine rotor disk. Additionally, a nearby research meteorological station provided observations of the Obukhov length, L, a direct measure of atmospheric stability. In general, the stability parameters {alpha}, I{sub U}, and TKE are in high agreement with the more physically-robust L, with TKE exhibiting the best agreement with L. Using these metrics, data periods are segregated by stability class to investigate power performance dependencies. Power output at this wind farm is highly correlated with atmospheric stability during the spring and summer months, while atmospheric stability exerts little impact on power output during the winter and autumn periods. During the spring and summer seasons, power output for a given wind speed was significantly higher during stable conditions and significantly lower during strongly convective conditions: power output differences approached 20% between stable and convective regimes. The dependency of stability on power output was apparent only when both turbulence and the shape of the wind speed profile were considered. Turbulence is one of the mechanisms by which atmospheric stability affects a turbine's power curve at this particular site, and measurements of turbulence can yield actionable insights into wind turbine behavior.

Wharton, S; Lundquist, J K

2010-02-22T23:59:59.000Z

271

Atmospheric Stability Impacts on Power Curves of Tall Wind Turbines - An Analysis of a West Coast North American Wind Farm  

SciTech Connect

Tall wind turbines, with hub heights at 80 m or above, can extract large amounts of energy from the atmosphere because they are likely to encounter higher wind speeds, but they face challenges given the complex nature of wind flow and turbulence at these heights in the boundary layer. Depending on whether the boundary layer is stable, neutral, or convective, the mean wind speed, direction, and turbulence properties may vary greatly across the tall turbine swept area (40 to 120 m AGL). This variability can cause tall turbines to produce difference amounts of power during time periods with identical hub height wind speeds. Using meteorological and power generation data from a West Coast North American wind farm over a one-year period, our study synthesizes standard wind park observations, such as wind speed from turbine nacelles and sparse meteorological tower observations, with high-resolution profiles of wind speed and turbulence from a remote sensing platform, to quantify the impact of atmospheric stability on power output. We first compare approaches to defining atmospheric stability. The standard, limited, wind farm operations enable the calculation only of a wind shear exponent ({alpha}) or turbulence intensity (I{sub U}) from cup anemometers, while the presence at this wind farm of a SODAR enables the direct observation of turbulent kinetic energy (TKE) throughout the turbine rotor disk. Additionally, a nearby research meteorological station provided observations of the Obukhov length, L, a direct measure of atmospheric stability. In general, the stability parameters {alpha}, I{sub U}, and TKE are in high agreement with the more physically-robust L, with TKE exhibiting the best agreement with L. Using these metrics, data periods are segregated by stability class to investigate power performance dependencies. Power output at this wind farm is highly correlated with atmospheric stability during the spring and summer months, while atmospheric stability exerts little impact on power output during the winter and autumn periods. During the spring and summer seasons, power output for a given wind speed was significantly higher during stable conditions and significantly lower during strongly convective conditions: power output differences approached 20% between stable and convective regimes. The dependency of stability on power output was apparent only when both turbulence and the shape of the wind speed profile were considered. Turbulence is one of the mechanisms by which atmospheric stability affects a turbine's power curve at this particular site, and measurements of turbulence can yield actionable insights into wind turbine behavior.

Wharton, S; Lundquist, J K

2010-02-22T23:59:59.000Z

272

The ATLAS Simulation Infrastructure  

E-Print Network (OSTI)

The simulation software for the ATLAS Experiment at the Large Hadron Collider is being used for large-scale production of events on the LHC Computing Grid. This simulation requires many components, from the generators that simulate particle collisions, through packages simulating the response of the various detectors and triggers. All of these components come together under the ATLAS simulation infrastructure. In this paper, that infrastructure is discussed, including that supporting the detector description, interfacing the event generation, and combining the GEANT4 simulation of the response of the individual detectors. Also described are the tools allowing the software validation, performance testing, and the validation of the simulated output against known physics processes.

The ATLAS Collaboration

2010-05-25T23:59:59.000Z

273

A Global Climatology of Surface Wind and Wind Stress Fields from Eight Years of QuikSCAT Scatterometer Data  

Science Conference Proceedings (OSTI)

Global seasonal cycles of the wind and wind stress fields estimated from the 8-yr record (September 1999August 2007) of wind measurements by the NASA Quick Scatterometer (QuikSCAT) are presented. While this atlas, referred to here as the ...

Craig M. Risien; Dudley B. Chelton

2008-11-01T23:59:59.000Z

274

Dependence of Wind Turbine Curves on Atmospheric Stability Regimes - An Analysis of a West Coast North American Tall Wind Farm  

DOE Green Energy (OSTI)

Tall wind turbines, with hub heights at 80 m or above, can extract large amounts of energy from the atmosphere because they are likely to encounter higher wind speeds, but they face challenges given the complex nature of wind flow in the boundary layer. Depending on whether the boundary layer is stable, convective or neutral, mean wind speed (U) and turbulence ({sigma}{sub U}) may vary greatly across the tall turbine swept area (40 m to 120 m). This variation can cause a single turbine to produce difference amounts of power during time periods of identical hub height wind speeds. The study examines the influence that atmospheric mixing or stability has on power output at a West Coast North American wind farm. They first examine the accuracy and applicability of two, relatively simple stability parameters, the wind shear-exponent, {alpha}, and the turbulence intensity, I{sub u}, against the physically-based, Obukhov length, L, to describe the wind speed and turbulence profiles in the rotor area. In general, the on-site stability parameters {alpha} and I{sub u} are in high agreement with the off-site, L stability scale parameter. Next, they divide the measurement period into five stability classes (strongly stable, stable, neutral, convective, and strongly convective) to discern stability-effects on power output. When only the mean wind speed profile is taken into account, the dependency of power output on boundary layer stability is only subtly apparent. When turbulence intensity I{sub u} is considered, the power generated for a given wind speed is twenty percent higher during strongly stable conditions than during strongly convective conditions as observed in the spring and summer seasons at this North American wind farm.

Wharton, S; Lundquist, J K; Sharp, J; Zulauf, M

2009-08-24T23:59:59.000Z

275

The ATLAS PanDA Pilot in Operation  

E-Print Network (OSTI)

The ATLAS Production and Distributed Analysis system (PanDA) was designed to meet ATLAS requirements for a data-driven workload management system capable of operating at LHC data processing scale. Submitted jobs are executed on worker nodes by pilot jobs sent to the grid sites by pilot factories. This poster provides an overview of the PanDA pilot system and presents major features added in light of recent operational experience, including multi-job processing, advanced job recovery for jobs with output storage failures, gLExec based identity switching from the generic pilot to the actual user, and other security measures. The PanDA system serves all ATLAS distributed processing and is the primary system for distributed analysis; it is currently used at over 100 sites world-wide. We analyze the performance of the pilot system in processing real LHC data on the OSG, EGI and Nordugrid infrastructures used by ATLAS, and describe plans for its evolution.

Nilsson, P; The ATLAS collaboration

2010-01-01T23:59:59.000Z

276

Analysis of the Technical and Economic Potential for Mid-Scale Distributed Wind  

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

Analysis of the Technical and Analysis of the Technical and Economic Potential for Mid-Scale Distributed Wind December 2007 - October 31, 2008 R. Kwartin, A. Wolfrum, K. Granfield, A. Kagel, and A. Appleton ICF International Fairfax, Virginia Subcontract Report NREL/SR-500-44280 December 2008 An Analysis of the Technical and Economic Potential for Mid-Scale Distributed Wind December 2007 - October 31, 2008 R. Kwartin, A. Wolfrum, K. Granfield, A. Kagel, and A. Appleton ICF International Fairfax, Virginia NREL Technical Monitor: T. Forsyth Prepared under Subcontract No. AAM-8-89001-01 Subcontract Report NREL/SR-500-44280 December 2008 National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, Colorado 80401-3393 303-275-3000 * www.nrel.gov NREL is a national laboratory of the U.S. Department of Energy

277

Analysis of Cycling Costs in Western Wind and Solar Integration Study  

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

Analysis of Cycling Costs in Analysis of Cycling Costs in Western Wind and Solar Integration Study Gary Jordan and Sundar Venkataraman GE Energy Schenectady, New York NREL Technical Monitor: Debra Lew Subcontract Report NREL/SR-5500-54864 June 2012 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. National Renewable Energy Laboratory 15013 Denver West Parkway Golden, Colorado 80401 303-275-3000 * www.nrel.gov Contract No. DE-AC36-08GO28308 Analysis of Cycling Costs in Western Wind and Solar Integration Study Gary Jordan and Sundar Venkataraman GE Energy Schenectady, New York NREL Technical Monitor: Debra Lew Prepared under Subcontract No. KLFT-1-11349-01

278

Analysis: Economic Impacts of Wind Applications in Rural Communities; June 18, 2004 -- January 31, 2005  

Wind Powering America (EERE)

Analysis: Economic Impacts Analysis: Economic Impacts of Wind Applications in Rural Communities June 18, 2004 - January 31, 2005 M. Pedden Eugene, Oregon Subcontract Report NREL/SR-500-39099 January 2006 Analysis: Economic Impacts of Wind Applications in Rural Communities June 18, 2004 - January 31, 2005 M. Pedden Eugene, Oregon NREL Technical Monitor: L. Flowers Prepared under Subcontract No(s). LEE-4-44834-01 Subcontract Report NREL/SR-500-39099 January 2006 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 NOTICE This report was prepared as an account of work sponsored by an agency of the United States government.

279

Variance Analysis of Wind and Natural Gas Generation under Different Market Structures: Some Observations  

DOE Green Energy (OSTI)

Does large scale penetration of renewable generation such as wind and solar power pose economic and operational burdens on the electricity system? A number of studies have pointed to the potential benefits of renewable generation as a hedge against the volatility and potential escalation of fossil fuel prices. Research also suggests that the lack of correlation of renewable energy costs with fossil fuel prices means that adding large amounts of wind or solar generation may also reduce the volatility of system-wide electricity costs. Such variance reduction of system costs may be of significant value to consumers due to risk aversion. The analysis in this report recognizes that the potential value of risk mitigation associated with wind generation and natural gas generation may depend on whether one considers the consumer's perspective or the investor's perspective and whether the market is regulated or deregulated. We analyze the risk and return trade-offs for wind and natural gas generation for deregulated markets based on hourly prices and load over a 10-year period using historical data in the PJM Interconnection (PJM) from 1999 to 2008. Similar analysis is then simulated and evaluated for regulated markets under certain assumptions.

Bush, B.; Jenkin, T.; Lipowicz, D.; Arent, D. J.; Cooke, R.

2012-01-01T23:59:59.000Z

280

WESTCARB Carbon Atlas  

DOE Data Explorer (OSTI)

WESTCARB is characterizing the extent and capacity of geologic formations capable of storing CO2, known as sinks. Results are entered into a geographic information system (GIS) database, along with the location of major CO2-emitting point sources in each of the six WESTCARB states, enabling researchers and the public to gauge the proximity of candidate CO2 storage sites to emission sources and the feasibility of linking them via pipelines. Specifically, the WESTCARB GIS database (also known as the carbon atlas) stores layers of geologic information about potential underground storage sites, such as porosity and nearby fault-lines and aquifers. Researchers use these data, along with interpreted geophysical data and available oil and gas well logs to estimate the region's potential geologic storage capacity. The database also depicts existing pipeline routes and rights-of-way and lands that could be off-limits, which can aid the development of a regional carbon management strategy. The WESTCARB Carbon Atlas, which is accessible to the public, provides a resource for public discourse on practical solutions for regional CO2 management. A key WESTCARB partner, the Utah Automated Geographic Reference Center, has developed data serving procedures to enable the WESTCARB Carbon Atlas to be integrated with those from other regional partnerships, thereby supporting the U.S. Department of Energy's national carbon atlas (NATCARB). (Acknowledgement to the WESTCARB web site at http://www.westcarb.org/index.htm)

Note: This page contains sample records for the topic "wind atlas analysis" 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

Atlas Brasileiro de Energia Solar (Brazilian Atlas of Solar Energy) |  

Open Energy Info (EERE)

Atlas Brasileiro de Energia Solar (Brazilian Atlas of Solar Energy) Atlas Brasileiro de Energia Solar (Brazilian Atlas of Solar Energy) Dataset Summary Description (Abstract): The Brazilian Atlas of Solar Energy is divided into five distinct sections. The first section describes the methodology used to obtain the solar radiation data and to produce the solar maps. The second section contains information on the confidence levels of the methodology employed, obtained by comparing solar estimates provided by BRASIL- SR model with estimates provided by other models and ground data. The third section presents the maps of various solar radiation components (global, direct, diffuse, tilted plane, and PAR). The fourth section analyzes the temporal and spatial variations and trends of solar energy resources and, (Purpose): The Brazilian Atlas of Solar Energy is designed to supply for a portion of the demand for information

282

Wind: wind speed and wind power density GIS data at 50m above ground and  

Open Energy Info (EERE)

Kenya from RisoeDTU Kenya from RisoeDTU Dataset Summary Description (Abstract): These data are results from the KAMM/WASP studies for Kenya. The KAMM/WAsP methodology uses a set of wind classes to represent wind conditions for the mapped region. A mesoscale simulation for each wind class, using KAMM (Karlsruhe Mesoscale Model), is performed and statistics performed on the model output. The results are a summary of the simulated wind climate, and ii. a wind atlas, a summary of the wind climate standardized to flat, uniform roughness terrain. (Purpose): The product is intended to be used to estimate the wind resource potential in the country including the the spatial variability. This map covers regions where long term measurements are not available. In a sense this is the point of the

283

Wind energy manual  

E-Print Network (OSTI)

Objectives: The course introduces principles of wind power production, design of wind turbines, location and design of wind farms, control of turbines and wind farms, predictive modeling, diagnostics, operations and maintenance, condition monitoring, health monitoring and of turbine components and systems, wind farm performance optimization, and integration of wind power with a grid. The modeling and analysis aspect of the topics discussed in the class will be illustrated with examples and case studies. Textbook: References:

A. Vieira; Da Rosa; Fundamentals Renewable; Energy Processes; San Diego; Jacob Kirpes; Small Wind

2013-01-01T23:59:59.000Z

284

ATLAS = == Description == This spkg builds ATLAS for Sage. It is ...  

E-Print Network (OSTI)

Re-download sources to fix timestamps. * Remove backup files (ending with ~). * Uncompress lapack tarball, yielding a smaller spkg. === atlas-3.10.0...

285

ATLAS Muon Spectrometer | Brookhaven and the LHC  

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

ATLAS Muon Spectrometer small wheels Brookhaven National Laboratory led the development of the 32 muon detectors in the inner ring of the ATLAS detector's "small wheels." (A small...

286

The Higgs discovery potential of ATLAS  

E-Print Network (OSTI)

Higgs boson production and decay at the LHC is described, together with related ATLAS search channels, in order to provide an overview of the ATLAS Higgs discovery potential.

Christopher Collins-Tooth

2007-12-10T23:59:59.000Z

287

A Nonstationary Extreme Value Analysis for the Assessment of Changes in Extreme Annual Wind Speed over the Gulf of St. Lawrence, Canada  

Science Conference Proceedings (OSTI)

Changes in the extreme annual wind speed in and around the Gulf of St. Lawrence (Canada) were investigated through a nonstationary extreme value analysis of the annual maximum 10-m wind speed obtained from the North American Regional Reanalysis (...

Y. Hundecha; A. St-Hilaire; T. B. M. J. Ouarda; S. El Adlouni; P. Gachon

2008-11-01T23:59:59.000Z

288

Mechanical Design, Analysis, and Testing of a Two-Bladed Wind Turbine Hub  

DOE Green Energy (OSTI)

Researchers at the National Wind Technology Center (NWTC) in Golden, Colorado, began performing the Unsteady Aerodynamics Experiment in 1993 to better understand the unsteady aerodynamics and structural responses of horizontal-axis wind turbines. The experiment consists of an extensively instrumented, downwind, three-bladed, 20-kilowatt wind turbine. In May 1995, I received a request from the NWTC to design a two-bladed hub for the experiment. For my thesis, I present the results of the mechanical design, analysis, and testing of the hub. The hub I designed is unique because it runs in rigid, teetering, or independent blade-flapping modes. In addition, the design is unusual because it uses two servomotors to pitch the blades independently. These features are used to investigate new load reduction, noise reduction, blade pitch optimization, and yaw control techniques for two-bladed turbines. I used a methodology by G. Phal and W. Bietz to design the hub. The hub meets all the performance specifications except that it achieves only 90% of the specified teeter range. In my thesis, I focus on the analysis and testing of the hub body. I performed solid-mechanics calculations, ran a finite-element analysis simulation, and experimentally investigated the structural integrity of the hub body.

Cotrell, J.

2002-06-01T23:59:59.000Z

289

An Analysis of Wind Fluctuation Statistics Collected under Stable Atmospheric Conditions at Three Sites in Alberta, Canada  

Science Conference Proceedings (OSTI)

Wind fluctuation data collected under stable atmospheric conditions at two prairie sites and a site located near the Rocky Mountain foothills have been analyzed. Results of the analysis show a marked tendency for horizontal fluctuation angles to ...

D. M. Leahey; M. C. Hansen; M. B. Schroeder

1988-06-01T23:59:59.000Z

290

Higgs boson search at ATLAS  

E-Print Network (OSTI)

The status of the ATLAS Higgs boson search using about 5 fb^-1 of data recorded in 2011 is summarized. Proceedings from Physics at the LHC 2012 (Vancouver).

Scott Snyder; for the ATLAS Collaboration

2012-09-04T23:59:59.000Z

291

Higgs boson search at ATLAS  

E-Print Network (OSTI)

The status of the ATLAS Higgs boson search using about 5 fb^-1 of data recorded in 2011 is summarized. Proceedings from Physics at the LHC 2012 (Vancouver).

Snyder, Scott

2012-01-01T23:59:59.000Z

292

Argonne Physics Division - ATLAS  

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

April 22-23, 2011 April 22-23, 2011 ATLAS PAC Meeting Please note: Because of the pressure on ATLAS beam time, the PAC ranked the approved experiments in two categories. Priority I experiments are those that must be run at all costs. Priority II experiments are those that should be granted beam time (indicated in parenthesis) if at all possible. Priority I experiments are approved for the present cycle of experiments, but can be run during the next PAC cycle as well if scheduling conflicts occur. Priority II experiments that cannot be scheduled during the present cycle will have to be resubmitted at the next PAC meeting. It is our intention to try as hard as possible to schedule a full experimental program and to accommodate as many, if not all, of the priority II experiments.

293

Argonne Physics Division - ATLAS  

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

Safety Safety General Radiation Electrical Experiment Safety at ATLAS The Management and Staff at ATLAS and Argonne National Laboratory are fully dedicated to integrating safety into all aspects of work at our facilities. We believe that it is completely possible, and absolutely essenital, to carry out effective research programs without compromising safety. Indeed, the process of incorporating safety into accelerator operations and experimental research begins at the earliest stages. All experiments, equipment, and procedures are reviewed extensively for safety issues prior to their approval. For onsite emergencies, call 911 on the internal phones (or 252-1911 on cell phones) Safety Tom Mullen, Physics Division Safety Engineer. Please Note: If you have any comments or concerns regarding safety at

294

NREL: Wind Research - Offshore Wind Research  

NLE Websites -- All DOE Office Websites (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

295

Model Development and Loads Analysis of a Wind Turbine on a Floating Offshore Tension Leg Platform  

SciTech Connect

This report presents results of the analysis of a 5-MW wind turbine located on a floating offshore tension leg platform (TLP) that was conducted using the fully coupled time-domain aero-hydro-servo-elastic design code FAST with AeroDyn and HydroDyn. Models in this code are of greater fidelity than most of the models that have been used to analyze floating turbines in the past--which have neglected important hydrodynamic and mooring system effects. The report provides a description of the development process of a TLP model, which is a modified version of a Massachusetts Institute of Technology design derived from a parametric linear frequency-domain optimization process. An extensive loads and stability analysis for ultimate and fatigue loads according to the procedure of the International Electrotechnical Commission offshore wind turbine design standard was performed with the verified TLP model. Response statistics, extreme event tables, fatigue lifetimes, and selected time histories of design-driving extreme events are analyzed and presented. Loads for the wind turbine on the TLP are compared to those of an equivalent land-based turbine in terms of load ratios. Major instabilities for the TLP are identified and described.

Matha, D.; Fischer, T.; Kuhn, M.; Jonkman, J.

2010-02-01T23:59:59.000Z

296

Highlights from ATLAS  

E-Print Network (OSTI)

The ATLAS experiment has been taking data efficiently since LHC collisions started, first at the injection energy of 450 GeV/beam and at 1.18 TeV/beam in 2009, then at 3.5 TeV/beam in 2010. Many results have already been obtained based on this data demonstrating the performance of the detector, as well as first physics measurements. Only a selection of highlights will be presented here.

Thorsten Wengler for the ATLAS Collaboration

2010-08-13T23:59:59.000Z

297

Highlights from ATLAS  

E-Print Network (OSTI)

The ATLAS experiment has been taking data efficiently since LHC collisions started, first at the injection energy of 450 GeV/beam and at 1.18 TeV/beam in 2009, then at 3.5 TeV/beam in 2010. Many results have already been obtained based on this data demonstrating the performance of the detector, as well as first physics measurements. Only a selection of highlights will be presented here.

Wengler, Thorsten

2010-01-01T23:59:59.000Z

298

Analysis of Wind Power and Load Data at Multiple Time Scales  

E-Print Network (OSTI)

Minnesota statewide wind integration study. November 2006.of net load vs. load Wind integration studies are generallyIt would be very useful to wind integration studies if this

Coughlin, Katie

2011-01-01T23:59:59.000Z

299

Evaluating state markets for residential wind systems: Results from an economic and policy analysis tool  

E-Print Network (OSTI)

For Residential Wind Systems USDA Farm Bill Grant TheA-20. Taxable USDA Farm Grant (BTC & SP, Wind Classes 2-A-21. Tax-Exempt USDA Farm Grant (BTC & SP, Wind Classes 2-

Edwards, Jennifer L.; Wiser, Ryan; Bolinger, Mark; Forsyth, Trudy

2004-01-01T23:59:59.000Z

300

Analysis of Wind Power and Load Data at Multiple Time Scales  

E-Print Network (OSTI)

by a set of integrated wind farms increases, the behavior ofto the spatial distribution of wind farms and the total MW.line dates for the various wind farms were not provided, so

Coughlin, Katie

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "wind atlas analysis" 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

Feasibility analysis of coordinated offshore wind project development in the U.S.  

E-Print Network (OSTI)

Wind energy is one of the cleanest and most available resources in the world, and advancements in wind technology are making it more cost effective. Though wind power is rapidly developing in many regions, its variable ...

Zhang, Mimi Q

2008-01-01T23:59:59.000Z

302

Analysis of Wind Power and Load Data at Multiple Time Scales  

E-Print Network (OSTI)

Huei. 2005. Primer on Wind Power for Utility Applications.Wan, Yih-Huei. 2004. Wind Power Plant Behaviors: Analysesof Long-Term Wind Power Data. National Renewable Energy Lab

Coughlin, Katie

2011-01-01T23:59:59.000Z

303

Analysis of Cycling Costs in Western Wind and Solar Integration Study  

DOE Green Energy (OSTI)

The Western Wind and Solar Integration Study (WWSIS) examined the impact of up to 30% penetration of variable renewable generation on the Western Electricity Coordinating Council system. Although start-up costs and higher operating costs because of part-load operation of thermal generators were included in the analysis, further investigation of additional costs associated with thermal unit cycling was deemed worthwhile. These additional cycling costs can be attributed to increases in capital as well as operations and maintenance costs because of wear and tear associated with increased unit cycling. This analysis examines the additional cycling costs of the thermal fleet by leveraging the results of WWSIS Phase 1 study.

Jordan, G.; Venkataraman, S.

2012-06-01T23:59:59.000Z

304

Processing of turbulence-layer wind speed with Generalized SCIDAR through wavelet analysis  

E-Print Network (OSTI)

We describe a new method involving wavelet transforms for deriving the wind velocity associated with atmospheric turbulence layers from Generalized SCIDAR measurements. The algorithm analyses the cross-correlation of a series of scintillation patterns separated by lapses of Dt, 2Dt, 3Dt, 4Dt and 5Dt using wavelet transforms. Wavelet analysis provides the position, direction and altitude of the different turbulence layers detected in each cross-correlation. The comparison and consistency of the turbulent layer displacements in consecutive cross-correlations allow the determination of their velocities and avoid misidentifications associated with noise and/or overlapping layers. To validate the algorithm, we have compared the velocity of turbulence layers derived on four nights with the wind vertical profile provided by balloon measurements. The software is fully automated and is able to analyse huge amounts of Generalized SCIDAR measurements.

B. Garcia-Lorenzo; J. J. Fuensalida

2006-08-28T23:59:59.000Z

305

Fault Analysis at a Wind Power Plant for One Year of Observation: Preprint  

DOE Green Energy (OSTI)

This paper analyzes the fault characteristics observed at a wind power plant, and the behavior of the wind power plant under fault events.

Muljadi, E.; Mills, Z.; Foster, R.; Conto, J.; Ellis, A.

2008-07-01T23:59:59.000Z

306

Analysis and Comparison of Low Voltage Ride Through Capability of Wind Power Generators.  

E-Print Network (OSTI)

??When the wind power accounted for a total generating capacity reaches a certain percentage, wind turbine's ability to maintain operation during a fault will affect (more)

Wu, Tung-Sheng

2013-01-01T23:59:59.000Z

307

influence of met-ocean conditions on the loads analysis of a Floating wind turbine.  

E-Print Network (OSTI)

??Better wind resources far from the shore and in deeper seas have encouraged the offshore wind industry to look into floating platforms. The International Electrotechnical (more)

Barj, Lucie

2013-01-01T23:59:59.000Z

308

Applications: Operational wind turbines  

E-Print Network (OSTI)

Capability Applications: Operational wind turbines Benefits: Optimize wind turbine performance Summary: Researchers at the Los Alamos National Laboratory (LANL) Intelligent Wind Turbine Program are developing a multi-physics modeling approach for the analysis of wind turbines in the presence of realistic

309

Tools for Trigger Aware Analyses in ATLAS  

E-Print Network (OSTI)

In order to search for rare processes, all four LHC experiments have to use advanced triggering methods for selecting and recording the events of interest. At the expected nominal LHC operating conditions only about 0.0005% of the collision events can be kept for physics analysis in ATLAS. Therefore the understanding and evaluation of the trigger performance is one of the most crucial parts of any physics analysis. ATLASs first level trigger is composed of custom-built hardware, while the second and third levels are implemented using regular PCs running reconstruction and selection algorithms. Because of this split, accessing the results of the trigger execution for the two stages is different. The complexity of the software trigger presents further difficulties in accessing the trigger data. To make the job of the physicists easier when evaluating the trigger performance, multiple general-use tools are provided by the ATLAS Trigger Analysis Tools group. The TrigDecisionTool, a general tool, is provided to...

Krasznahorkay, A; The ATLAS collaboration; Stelzer, J

2010-01-01T23:59:59.000Z

310

Philippine Wind Farm Analysis and Site Selection Analysis, 1 January 2000 - 31 December 2000  

DOE Green Energy (OSTI)

The U.S. Department of Energy (DOE), through the National Renewable Energy Laboratory (NREL), has been working in partnership with the U.S. Agency for International Development (USAID) in an ongoing process to quantify the Philippine wind energy potential and foster wind farm development. As part of that process, NREL retained Global Energy Concepts, LLC (GEC) to review and update the policy needs as well as develop a site-screening process applicable for the Philippines. GEC worked closely with the Philippines National Power Corporation (NPC) in completing this work. This report provides the results of the policy needs and site selection analyses conducted by GEC.

Conover, K.

2001-12-01T23:59:59.000Z

311

Using digital filtering techniques as an aid in wind turbine data analysis  

DOE Green Energy (OSTI)

Research involving very large sets of digital data is often difficult due to the enormity of the database. In the case of a wind turbine operating under varying environmental conditions, determining which data are representative of the blade aerodynamics and which are due to transient flow ingestion effects or errors in instrumentation, operation, and data collection is of primary concern to researchers. The National Renewable Energy Laboratory in Golden, Colorado collected extensive data on a downwind horizontal axis wind turbine (HAWT) during a turbine test project called the Combined Experiment. A principal objective of this experiment was to provide a means to predict HAWT aerodynamic, mechanical, and electrical operational loads based upon analytical models of aerodynamic performance related to blade design and inflow conditions. In a collaborative effort with the Aerospace Engineering Department at the University of Colorado at Boulder, a team of researchers has evolved and utilized various digital filtering techniques in analyzing the data from the Combined Experiment. A preliminary analysis of the data set was performed to determine how to best approach the data. The reduced data set emphasized selection of inflow conditions such that the aerodynamic data could be compared directly to wind tunnel data obtained for the same airfoil design as used for the HAWT`s blades. It will be shown that this reduced data set has yielded valid, reproducible results that a simple averaging technique or a random selection approach cannot achieve. These findings provide a stable baseline against which operational HAWT data can be compared.

Young, T. [Univ. of Colorado, Boulder, CO (United States). BioServe Space Technologies

1994-11-01T23:59:59.000Z

312

Wind-electric icemaking project: Analysis and dynamometer testing. Volume 1  

DOE Green Energy (OSTI)

The wind/hybrid systems group at the National Renewable Energy Laboratory has been researching the most practical and cost-effective methods for producing ice from off-grid wind-electric power systems. The first phase of the project, conducted in 1993--1994, included full-scale dynamometer and field testing of two different electric ice makers directly connected to a permanent magnet alternator. The results of that phase were encouraging and the second phase of the project was launched in which steady-state and dynamic numerical models of these systems were developed and experimentally validated. The third phase of the project was the dynamometer testing of the North Star ice maker, which is powered by a 12-kilowatt Bergey Windpower Company, Inc., alternator. This report describes both the second and third project phases. Also included are detailed economic analyses and a discussion of the future prospects of wind-electric ice-making systems. The main report is contained in Volume 1. Volume 2 consists of the report appendices, which include the actual computer programs used in the analysis and the detailed test results.

Holz, R.; Gervorgian, V.; Drouilhet, S.; Muljadi, E.

1998-07-01T23:59:59.000Z

313

SEACC: the systems engineering and analysis computer code for small wind systems  

DOE Green Energy (OSTI)

The systems engineering and analysis (SEA) computer program (code) evaluates complete horizontal-axis SWECS performance. Rotor power output as a function of wind speed and energy production at various wind regions are predicted by the code. Efficiencies of components such as gearbox, electric generators, rectifiers, electronic inverters, and batteries can be included in the evaluation process to reflect the complete system performance. Parametric studies can be carried out for blade design characteristics such as airfoil series, taper rate, twist degrees and pitch setting; and for geometry such as rotor radius, hub radius, number of blades, coning angle, rotor rpm, etc. Design tradeoffs can also be performed to optimize system configurations for constant rpm, constant tip speed ratio and rpm-specific rotors. SWECS energy supply as compared to the load demand for each hour of the day and during each session of the year can be assessed by the code if the diurnal wind and load distributions are known. Also available during each run of the code is blade aerodynamic loading information.

Tu, P.K.C.; Kertesz, V.

1983-03-01T23:59:59.000Z

314

Wind-electric icemaking project: Analysis and dynamometer testing. Volume 2  

DOE Green Energy (OSTI)

The wind/hybrid systems group at the National Renewable Energy Laboratory has been researching the most practical and cost-effective methods for producing ice from off-grid wind-electric power systems. The first phase of the project, conducted in 1993--1994, included full-scale dynamometer and field testing of two different electric ice makers directly connected to a permanent magnet alternator. The results of that phase were encouraging and the second phase of the project was launched in which steady-state and dynamic numerical models of these systems were developed and experimentally validated. The third phase of the project was the dynamometer testing of the North Star ice maker, which is powered by a 12-kilowatt Bergey Windpower Company, Inc., alternator. This report describes both the second and third project phases. Also included are detailed economic analyses and a discussion of the future prospects of wind-electric ice-making systems. The main report is contained in Volume 1. Volume 2 consists of the report appendices, which include the actual computer programs used in the analysis and the detailed test results.

Holz, R.; Gervorgian, V.; Drouilhet, S.; Muljadi, E.

1998-07-01T23:59:59.000Z

315

Overview of ATLAS PanDA Workload Management  

E-Print Network (OSTI)

The Production and Distributed Analysis System (PanDA) plays a key role in the ATLAS distributed computing infrastructure. All ATLAS Monte-Carlo simulation and data reprocessing jobs pass through the PanDA system. We will describe how PanDA manages job execution on the grid using dynamic resource estimation and data replication together with intelligent brokerage in order to meet the scaling and automation requirements of ATLAS distributed computing. PanDA is also the primary ATLAS system for processing user and group analysis jobs, bringing further requirements for quick, flexible adaptation to the rapidly evolving analysis use cases of the early datataking phase, in addition to the high reliability, robustness and usability needed to provide efficient and transparent utilization of the grid for analysis users. We will describe how Panda meets ATLAS requirements, the evolution of the system in light of operational experience, how the system has performed during the first LHC data-taking phase, and plans for ...

Maeno, T; The ATLAS collaboration; Wenaus, T; Nilsson, P; Stewart, G; Walker, R; Stradling, A; Caballero, J; Potekhin, M; Smith, D

2010-01-01T23:59:59.000Z

316

Overview of ATLAS PanDA Workload Management  

Science Conference Proceedings (OSTI)

The Production and Distributed Analysis System (PanDA) plays a key role in the ATLAS distributed computing infrastructure. All ATLAS Monte-Carlo simulation and data reprocessing jobs pass through the PanDA system. We will describe how PanDA manages job execution on the grid using dynamic resource estimation and data replication together with intelligent brokerage in order to meet the scaling and automation requirements of ATLAS distributed computing. PanDA is also the primary ATLAS system for processing user and group analysis jobs, bringing further requirements for quick, flexible adaptation to the rapidly evolving analysis use cases of the early datataking phase, in addition to the high reliability, robustness and usability needed to provide efficient and transparent utilization of the grid for analysis users. We will describe how PanDA meets ATLAS requirements, the evolution of the system in light of operational experience, how the system has performed during the first LHC data-taking phase and plans for the future.

Maeno T.; De K.; Wenaus T.; Nilsson P.; Stewart G. A.; Walker R.; Stradling A.; Caballero J.; Potekhin M.; Smith D.

2011-01-01T23:59:59.000Z

317

Overview of ATLAS PanDA Workload Management  

E-Print Network (OSTI)

The Production and Distributed Analysis System (PanDA) plays a key role in the ATLAS distributed computing infrastructure. All ATLAS Monte-Carlo simulation and data reprocessing jobs pass through the PanDA system. We will describe how PanDA manages job execution on the grid using dynamic resource estimation and data replication together with intelligent brokerage in order to meet the scaling and automation requirements of ATLAS distributed computing. PanDA is also the primary ATLAS system for processing user and group analysis jobs, bringing further requirements for quick, flexible adaptation to the rapidly evolving analysis use cases of the early datataking phase, in addition to the high reliability, robustness and usability needed to provide efficient and transparent utilization of the grid for analysis users. We will describe how PanDA meets ATLAS requirements, the evolution of the system in light of operational experience, how the system has performed during the first LHC data-taking phase, and plans for ...

Maeno, T; The ATLAS collaboration; Wenaus, T; Nilsson, P; Stewart, G A; Walker, R; Stradling, A; Caballero, J; Potekhin, M; Smith, D

2011-01-01T23:59:59.000Z

318

A configuration system for the ATLAS trigger  

E-Print Network (OSTI)

will be exposed to proton-proton collisions from beams crossing at 40 MHz that have to be reduced to the few 100 Hz allowed by the storage systems. A three-level trigger system has been designed to achieve this goal. We describe the configuration system under construction for the ATLAS trigger chain. It provides the trigger system with all the parameters required for decision taking and to record its history. The same system configures the event reconstruction, Monte Carlo simulation and data analysis, and provides tools for accessing and manipulating the configuration data in all contexts. THE ATLAS TRIGGER The LHC proton bunches will cross at a frequency of approximately 40 MHz. The rate of events that can be committed to permanent storage in normal data taking is only

unknown authors

2006-01-01T23:59:59.000Z

319

Application of Ensemble Sensitivity Analysis to Observation Targeting for Short-term Wind Speed Forecasting  

Science Conference Proceedings (OSTI)

The operators of electrical grids, sometimes referred to as Balancing Authorities (BA), typically make critical decisions on how to most reliably and economically balance electrical load and generation in time frames ranging from a few minutes to six hours ahead. At higher levels of wind power generation, there is an increasing need to improve the accuracy of 0- to 6-hour ahead wind power forecasts. Forecasts on this time scale have typically been strongly dependent on short-term trends indicated by the time series of power production and meteorological data from a wind farm. Additional input information is often available from the output of Numerical Weather Prediction (NWP) models and occasionally from off-site meteorological towers in the region surrounding the wind generation facility. A widely proposed approach to improve short-term forecasts is the deployment of off-site meteorological towers at locations upstream from the wind generation facility in order to sense approaching wind perturbations. While conceptually appealing, it turns out that, in practice, it is often very difficult to derive significant benefit in forecast performance from this approach. The difficulty is rooted in the fact that the type, scale, and amplitude of the processes controlling wind variability at a site change from day to day if not from hour to hour. Thus, a location that provides some useful forecast information for one time may not be a useful predictor a few hours later. Indeed, some processes that cause significant changes in wind power production operate predominantly in the vertical direction and thus cannot be monitored by employing a network of sensors at off-site locations. Hence, it is very challenging to determine the type of sensors and deployment locations to get the most benefit for a specific short-term forecast application. Two tools recently developed in the meteorological research community have the potential to help determine the locations and parameters to measure in order to get the maximum positive impact on forecast performance for a particular site and short-term look-ahead period. Both tools rely on the use of NWP models to assess the sensitivity of a forecast for a particular location to measurements made at a prior time (i.e. the look-ahead period) at points surrounding the target location. The fundamental hypothesis is that points and variables with high sensitivity are good candidates for measurements since information at those points are likely to have the most impact on the forecast for the desired parameter, location and look-ahead period. One approach is called the adjoint method (Errico and Vukicevic, 1992; Errico, 1997) and the other newer approach is known as Ensemble Sensitivity Analysis (ESA; Ancell and Hakim 2007; Torn and Hakim 2008). Both approaches have been tested on large-scale atmospheric prediction problems (e.g. forecasting pressure or precipitation over a relatively large region 24 hours ahead) but neither has been applied to mesoscale space-time scales of winds or any other variables near the surface of the earth. A number of factors suggest that ESA is better suited for short-term wind forecasting applications. One of the most significant advantages of this approach is that it is not necessary to linearize the mathematical representation of the processes in the underlying atmospheric model as required by the adjoint approach. Such a linearization may be especially problematic for the application of short-term forecasting of boundary layer winds in complex terrain since non-linear shifts in the structure of boundary layer due to atmospheric stability changes are a critical part of the wind power production forecast problem. The specific objective of work described in this paper is to test the ESA as a tool to identify measurement locations and variables that have the greatest positive impact on the accuracy of wind forecasts in the 0- to 6-hour look-ahead periods for the wind generation area of California's Tehachapi Pass during the warm (high generation) season. The paper is organized

Zack, J; Natenberg, E; Young, S; Manobianco, J; Kamath, C

2010-02-21T23:59:59.000Z

320

Application of Ensemble Sensitivity Analysis to Observation Targeting for Short-term Wind Speed Forecasting  

DOE Green Energy (OSTI)

The operators of electrical grids, sometimes referred to as Balancing Authorities (BA), typically make critical decisions on how to most reliably and economically balance electrical load and generation in time frames ranging from a few minutes to six hours ahead. At higher levels of wind power generation, there is an increasing need to improve the accuracy of 0- to 6-hour ahead wind power forecasts. Forecasts on this time scale have typically been strongly dependent on short-term trends indicated by the time series of power production and meteorological data from a wind farm. Additional input information is often available from the output of Numerical Weather Prediction (NWP) models and occasionally from off-site meteorological towers in the region surrounding the wind generation facility. A widely proposed approach to improve short-term forecasts is the deployment of off-site meteorological towers at locations upstream from the wind generation facility in order to sense approaching wind perturbations. While conceptually appealing, it turns out that, in practice, it is often very difficult to derive significant benefit in forecast performance from this approach. The difficulty is rooted in the fact that the type, scale, and amplitude of the processes controlling wind variability at a site change from day to day if not from hour to hour. Thus, a location that provides some useful forecast information for one time may not be a useful predictor a few hours later. Indeed, some processes that cause significant changes in wind power production operate predominantly in the vertical direction and thus cannot be monitored by employing a network of sensors at off-site locations. Hence, it is very challenging to determine the type of sensors and deployment locations to get the most benefit for a specific short-term forecast application. Two tools recently developed in the meteorological research community have the potential to help determine the locations and parameters to measure in order to get the maximum positive impact on forecast performance for a particular site and short-term look-ahead period. Both tools rely on the use of NWP models to assess the sensitivity of a forecast for a particular location to measurements made at a prior time (i.e. the look-ahead period) at points surrounding the target location. The fundamental hypothesis is that points and variables with high sensitivity are good candidates for measurements since information at those points are likely to have the most impact on the forecast for the desired parameter, location and look-ahead period. One approach is called the adjoint method (Errico and Vukicevic, 1992; Errico, 1997) and the other newer approach is known as Ensemble Sensitivity Analysis (ESA; Ancell and Hakim 2007; Torn and Hakim 2008). Both approaches have been tested on large-scale atmospheric prediction problems (e.g. forecasting pressure or precipitation over a relatively large region 24 hours ahead) but neither has been applied to mesoscale space-time scales of winds or any other variables near the surface of the earth. A number of factors suggest that ESA is better suited for short-term wind forecasting applications. One of the most significant advantages of this approach is that it is not necessary to linearize the mathematical representation of the processes in the underlying atmospheric model as required by the adjoint approach. Such a linearization may be especially problematic for the application of short-term forecasting of boundary layer winds in complex terrain since non-linear shifts in the structure of boundary layer due to atmospheric stability changes are a critical part of the wind power production forecast problem. The specific objective of work described in this paper is to test the ESA as a tool to identify measurement locations and variables that have the greatest positive impact on the accuracy of wind forecasts in the 0- to 6-hour look-ahead periods for the wind generation area of California's Tehachapi Pass during the warm (high generation) season. The paper is organized

Zack, J; Natenberg, E; Young, S; Manobianco, J; Kamath, C

2010-02-21T23:59:59.000Z

Note: This page contains sample records for the topic "wind atlas analysis" 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

NREL-International Wind Resource Maps | Open Energy Information  

Open Energy Info (EERE)

International Wind Resource Maps International Wind Resource Maps Jump to: navigation, search Tool Summary Name: NREL-International Wind Resource Maps Agency/Company /Organization: National Renewable Energy Laboratory Sector: Energy Focus Area: Wind Topics: Resource assessment Website: www.nrel.gov/wind/international_wind_resources.html NREL-International Wind Resource Maps Screenshot References: International Wind Resource Maps [1] Logo: NREL-International Wind Resource Maps This resource provides access to NREL-developed wind resource maps and atlases for several countries. NREL's wind mapping projects have been supported by the U.S. Department of Energy, U.S. Agency for International Development, and United Nations International Programme. "NREL is helping to develop high-resolution projections of wind resources

322

United States areal wind resource assessment  

SciTech Connect

Estimates of the electricity that could potentially be generated by wind power and of the land area available for wind energy development have been calculated for the contiguous United States, in support of the US Department of Energy`s National Energy Strategy. These estimates were based on the wind resource data published in a national resource atlas. Estimates of the wind resource in this atlas are expressed in wind power classes ranging from class 1 to class 7, with each class representing a range of mean wind power density or equivalent mean speed at specified heights above the ground (Table 1) . Areas designatedclass 4 or greater are suitable for most wind turbine applications. Power class 3 areas are suitable for wind energy development using tall (50-m hub height) turbines. Class 2 areas are marginal and class 1 areas unsuitable for wind energy development. A map of the areal (percentage of land area) distribution of the wind resource digitized in grid cells (1/4{degrees} latitude by 1/3{degrees} longitude) shows that exposed areas with moderate to high wind resource (class 3 and greater) are dispersed throughout much of the contiguous United States.

Schwartz, M.N.; Elliott, D.L.

1993-03-01T23:59:59.000Z

323

United States areal wind resource assessment  

SciTech Connect

Estimates of the electricity that could potentially be generated by wind power and of the land area available for wind energy development have been calculated for the contiguous United States, in support of the US Department of Energy's National Energy Strategy. These estimates were based on the wind resource data published in a national resource atlas. Estimates of the wind resource in this atlas are expressed in wind power classes ranging from class 1 to class 7, with each class representing a range of mean wind power density or equivalent mean speed at specified heights above the ground (Table 1) . Areas designatedclass 4 or greater are suitable for most wind turbine applications. Power class 3 areas are suitable for wind energy development using tall (50-m hub height) turbines. Class 2 areas are marginal and class 1 areas unsuitable for wind energy development. A map of the areal (percentage of land area) distribution of the wind resource digitized in grid cells (1/4[degrees] latitude by 1/3[degrees] longitude) shows that exposed areas with moderate to high wind resource (class 3 and greater) are dispersed throughout much of the contiguous United States.

Schwartz, M.N.; Elliott, D.L.

1993-03-01T23:59:59.000Z

324

An Analysis of the Structure of Local Wind Systems in a Broad Mountain Basin  

Science Conference Proceedings (OSTI)

In the traditional model of ridge-valley winds, there are typically two wind regimes on a dry day: a downslope, drainage wind at night due to cooling at the surface along the slopes, and an upslope wind during the day due to solar heating of the ...

R. Banta; W. R. Cotton

1981-11-01T23:59:59.000Z

325

Wind power resource assessment in complex urban environments: MIT campus case-study using CFD Analysis  

E-Print Network (OSTI)

Wind power resource assessment in complex urban environments: MIT campus case-study using CFD of Technology, 2Meteodyn Objectives Conclusions References [1] TopoWind software, User Manual [2] Wind Resource Assessment Handbook: Fundamentals for Conducting a Successful Wind Monitoring Program, AWS Scientific, Inc

326

Dynamic Analysis of a Grid-Connected Wind Electric Generator with Embedded Static VAR Compensator  

Science Conference Proceedings (OSTI)

This paper describes modeling and simulation of Wind Electric Generator (WEG) comprising a pitch controlled Horizontal Axis Wind Turbine (HAWT) coupled to squirrel cage induction generator through a gear. The generic issue of VAR drain from the grid ... Keywords: Wind turbine, induction generator, two mass model - drive train, SVC, wind electric generator dynamics

Vishnuvardhanan V.; Sasi K. Kottayil

2009-12-01T23:59:59.000Z

327

Wave- and Anemometer-Based Sea Surface Wind (WASWind) for Climate Change Analysis  

Science Conference Proceedings (OSTI)

Ship-based measurements of sea surface wind speed display a spurious upward trend due to increases in anemometer height. To correct this bias, the authors constructed a new sea surface wind dataset from ship observations of wind speed and wind ...

Hiroki Tokinaga; Shang-Ping Xie

2011-01-01T23:59:59.000Z

328

ATLAS Muon Detector Commissioning  

E-Print Network (OSTI)

The ATLAS muon spectrometer consists of several major components: Monitored Drift Tubes (MDTs) for precision measurements in the bending plane of the muons, supplemented by Cathode Strip Chambers (CSC) in the high eta region; Resistive Plate Chambers (RPCs) and Thin Gap Chambers (TGCs) for trigger and second coordinate measurement in the barrel and endcap regions, respectively; an optical alignment system to track the relative positions of all chambers; and, finally, the world's largest air-core magnetic toroid system. We will describe the status and commissioning of the muon system with cosmic rays and plans for commissioning with early beams.

E. Diehl; for the ATLAS muon collaboration

2009-10-15T23:59:59.000Z

329

The ATLAS jet trigger  

E-Print Network (OSTI)

The ATLAS jet trigger system has a 3-level structure, and was designed based on the concept of Regions Of Interest, where only regions of the detector around interesting Level-1 objects are reconstructed at the higher levels. This philosophy has changed during 2011, and there now exists the possibility to unpacking the full calorimeter at Event Filter. In 2012, full calorimeter unpacking is also available at Level-2, in addition jet energies are now calibrated to jet energy scale, and cleaning cuts are applied to reduce rate spikes. This paper presents the performance of the jet trigger in 2011 and an overview of the new features available for 2012.

Tamsett, M; The ATLAS collaboration

2012-01-01T23:59:59.000Z

330

Eastern Wind Integration and Transmission Study -- Preliminary Findings: Preprint  

Science Conference Proceedings (OSTI)

This paper reviews the Eastern Wind Integration and Transmission Study, the development of wind datasets, the transmission analysis, and the results of wind integration analysis for four scenarios.

Corbus, D.; Milligan, M.; Ela, E.; Schuerger, M.; Zavadil, B.

2009-09-01T23:59:59.000Z

331

Controls and data acquisition on Atlas  

DOE Green Energy (OSTI)

The control and data acquisition systems for Atlas will use a large degree of decentralization. By distributing control points close to the systems being controlled, the authors expect to simplify the task of isolating electronic systems from the large expected EMI pulses, allow connection of the various parts of the system by high-level fiber-optic networks, allow a simple configuration of the control and data acquisition screen rooms, and simplify the software efforts through the resulting modularization. The Atlas control system must control capacitor charging, machine and diagnostic timing and triggering, marx module diagnostics, vacuum systems, gas handling for railgaps, safety interlocks, and oil handling. Many of these tasks will be performed by industrial-style programmable logic controllers (PLCs). Each of 38 Marx bank maintenance units will have a control and diagnostic package which will monitor both charging and discharging current and railgap trigger timing. An unusual feature of digitizers to record each Marx module`s output waveform, plus nanosecond resolution time interval meters to record the firing time of each railgap. The machine data acquisition system for Atlas will be built around an SQL database, use National Instruments LabVIEW software to control data acquisition instruments and provide links for a variety of experimentalists` data analysis packages. World Wide Web access will provide an interface through which users can monitor experimental data and machine status.

Scudder, D.W.; Hosack, K.W.; Parsons, W.M.; Reass, W.A.; Thompson, M.C.; Wysocki, F.J. [Los Alamos National Lab., NM (United States); Creager, J. [Allied Signal, Albuquerque, NM (United States)

1997-09-01T23:59:59.000Z

332

Variables Affecting Economic Development of Wind Energy  

DOE Green Energy (OSTI)

NREL's JEDI Wind model performed an analysis of wind-power-related economic development drivers. Economic development benefits for wind and coal were estimated using NREL's JEDI Wind and JEDI Coal models.

Lantz, E.; Tegen, S.

2008-07-01T23:59:59.000Z

333

Variables Affecting Economic Development of Wind Energy  

SciTech Connect

NREL's JEDI Wind model performed an analysis of wind-power-related economic development drivers. Economic development benefits for wind and coal were estimated using NREL's JEDI Wind and JEDI Coal models.

Lantz, E.; Tegen, S.

2008-07-01T23:59:59.000Z

334

The ATLAS Experiment on YouTube  

DOE Data Explorer (OSTI)

ATLAS is a particle physics experiment at the Large Hadron Collider at CERN. The ATLAS detector is searching for new discoveries in the head-on collisions of protons of extraordinarily high energy. ATLAS will learn about the basic forces that have shaped our Universe since the beginning of time and that will determine its fate. Among the possible unknowns are the origin of mass, extra dimensions of space, unification of fundamental forces, and evidence for dark matter candidates in the Universe [copied from http://atlas.ch/]. Approximately 700 physicists, engineers and graduate students from 44 U.S. institutions, including four DOE laboratories, participate in the ATLAS collaboration. In addition to the Collaboration's home page and numerous ATLAS-related pages at the various research organizations involved, there are two primary ATLAS websites that provide the full range of information about this experiment at the Large Hadron Collider in at CERN, Switzerland. The main ATLAS Experiment page hosted by CERN is found at http://atlas.ch/, while the home page specifically for the U.S. contribution to ATLAS is at http://www.uslhc.us/The_US_and_the_LHC/Experiments/ATLAS. Likewise, videos and multimedia from the inception and construction of ATLAS and continuing on through current operations and scientific discoveries are found everywhere from Brookhaven Lab to YouTube to an official collection at the ATLAS Experiment page at CERN. This DDE record guides you to the ATLAS Experiment Channel on YouTube.

335

The integration of climatic data sets for wind resource assessment  

DOE Green Energy (OSTI)

One barrier to wind energy development, in many regions of the world, is the lack of reliable information about the spacial distribution of the wind energy resource. The goal of the U.S. Department of Energy (DOE) Wind Energy Program`s wind resource assessment group is to improve the characterization of the wind resource in many of these regions in support of U.S. wind energy industry. NREL provides wind resource assessments for our clients in the form of reports, atlases, and wind resource maps. The assessments estimate the level of the wind resource, at wind turbine hub heights (typically 30m to 50m above ground level), for locations exposed to the prevailing winds.

Schwartz, M.N.; Elliott, D.L.

1997-09-01T23:59:59.000Z

336

Wind Power Opportunities in St. Thomas, USVI: A Site-Specific Evaluation and Analysis  

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

Power Opportunities in Power Opportunities in St. Thomas, USVI: A Site-Specific Evaluation and Analysis E. Lantz, A. Warren, J.O. Roberts, and V. Gevorgian Technical Report NREL/TP-7A20-55415 September 2012 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. National Renewable Energy Laboratory 15013 Denver West Parkway Golden, Colorado 80401 303-275-3000 * www.nrel.gov Contract No. DE-AC36-08GO28308 Wind Power Opportunities in St. Thomas, USVI: A Site-Specific Evaluation and Analysis E. Lantz, A. Warren, J.O. Roberts, and V. Gevorgian Prepared under Task No. IDVI.1020 Technical Report NREL/TP-7A20-55415 September 2012 NOTICE This report was prepared as an account of work sponsored by an agency of the United States government.

337

BioFuels Atlas (Presentation)  

DOE Green Energy (OSTI)

Presentation for biennial merit review of Biofuels Atlas, a first-pass visualization tool that allows users to explore the potential of biomass-to-biofuels conversions at various locations and scales.

Moriarty, K.

2011-02-01T23:59:59.000Z

338

Analysis of wind penetration and network reliability through Monte Carlo simulation  

Science Conference Proceedings (OSTI)

Generating electricity from wind resources has many environmental and economic advantages over traditional fossil-fueled generation. As a result, there is little doubt that energy from wind will be a significant contribution to the electricity portfolio ...

C. L. Anderson; J. B. Cardell

2009-12-01T23:59:59.000Z

339

A Multispacecraft Analysis of a Small-Scale Transient Entrained by Solar Wind Streams  

E-Print Network (OSTI)

solar wind and solar transients between the Sun and 1 AU bythe solar wind can be tracked continuously from the Sun tothe Suns corona, known as coronal holes, where solar plasma

2009-01-01T23:59:59.000Z

340

The Effects of Marine Winds from Scatterometer Data on Weather Analysis and Forecasting  

Science Conference Proceedings (OSTI)

Satellite scatterometer observations of the ocean surface wind speed and direction improve the depiction of storms at sea. Over the ocean, scatterometer surface winds are deduced from multiple measurements of reflected radar power made from ...

R. Atlas; R. N. Hoffman; S. M. Leidner; J. Sienkiewicz; T-W. Yu; S. C. Bloom; E. Brin; J. Ardizzone; J. Terry; D. Bungato; J. C. Jusem

2001-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "wind atlas analysis" 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

Voltage Stability Analysis of a Distributed Network Incorporating Wind Power Resource  

Science Conference Proceedings (OSTI)

This paper investigates the impacts of a wind farm connected at Harterbeespoort substation in South Africa on voltage stability of the power network. The site wind speed was determined and analyzed for viability. A comparison is made between the use ...

Denis Juma; Bessie Monchusi; Josiah Munda; Adisa Jimoh

2011-01-01T23:59:59.000Z

342

An Automated, Objective, Multiple-Satellite-Platform Tropical Cyclone Surface Wind Analysis  

Science Conference Proceedings (OSTI)

A method to estimate objectively the surface wind fields associated with tropical cyclones using only data from multiple satellite platforms and satellite-based wind retrieval techniques is described. The analyses are computed on a polar grid ...

John A. Knaff; Mark DeMaria; Debra A. Molenar; Charles R. Sampson; Matthew G. Seybold

2011-10-01T23:59:59.000Z

343

Wind Farm Power Fluctuations, Ancillary Services, and System Operating Impact Analysis Activities in the United States: Preprint  

SciTech Connect

With ever increasing penetration of wind capacity and growing interest in wind power by electric utilities and other power providers, questions about the impacts and costs associated with maintaining a stable grid is receiving lots of attention. These issues are important, both in competitive and regulated monopoly markets.To evaluate the range of ancillary service impact of wind power plants, wind power plant output fluctuations on the order of seconds to minutes must be known. However, the data required for a credible analysis has not been widely available. The National Renewable Energy Laboratory (NREL), through its own efforts, and in conjunction with a wide group of stakeholders including other national labs, consultants, developers, utilities, and the non-profit Utility Wind Interest Group, has initiated measurement and analysis activities. The efforts are ongoing. While final system-cost results are not available, this paper will describe the progress to date and present typical results and statistical analysis. In addition, methods will be explained with the aim of soliciting feedback from others looking at similar issues worldwide.

Parsons, B. K. (National Renewable Energy Laboratory); Wan, Y. (National Renewable Energy Laboratory); Kirby, B. (Oak Ridge National Laboratory)

2001-07-01T23:59:59.000Z

344

GIS-based Multi-Criteria Analysis of Wind Farm Development Henning Sten Hansen  

E-Print Network (OSTI)

of today's huge wind turbines have to be considered. An obvious answer on these challenges could that the noise from a wind turbine of 60 dB or more is unquestionably annoying, whereas a noise of 20 dB or less national and regional legislation related to wind turbine development. Second, the criteria should

Hansen, René Rydhof

345

Evaluating state markets for residential wind systems: Results from an economic and policy analysis tool  

E-Print Network (OSTI)

of the wind energy system is 0 percent of cost for year oneWind Energy Association Lawrence Berkeley National Laboratory break-even turnkey costLCOE for Wind Classes 2-4 Levelized Cost of Energy ($/kWh)

Edwards, Jennifer L.; Wiser, Ryan; Bolinger, Mark; Forsyth, Trudy

2004-01-01T23:59:59.000Z

346

A sensitivity analysis of the treatment of wind energy in the AEO99 version of NEMS  

E-Print Network (OSTI)

cost to further test the effects of the assumptions about wind energyEnergy Outlook 1999, December 1998. Although the cost of windcost of wind in the input file by half (before learning-by-doing and other factors are assessed) is tested, wind energy

Osborn, Julie G.; Wood, Frances; Richey, Cooper; Sanders, Sandy; Short, Walter; Koomey, Jonathan

2001-01-01T23:59:59.000Z

347

Analysis of Variability and Uncertainty in Wind Power Forecasting: An International Comparison (Presentation)  

Science Conference Proceedings (OSTI)

This presentation summarizes the work to investigate the uncertainty in wind forecasting at different times of year and compare wind forecast errors in different power systems using large-scale wind power prediction data from six countries: the United States, Finland, Spain, Denmark, Norway, and Germany.

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

2013-10-01T23:59:59.000Z

348

Homogenization and Trend Analysis of Canadian Near-Surface Wind Speeds  

Science Conference Proceedings (OSTI)

Near-surface wind speeds recorded at 117 stations in Canada for the period from 1953 to 2006 were analyzed in this study. First, metadata and a logarithmic wind profile were used to adjust hourly wind speeds measured at nonstandard anemometer ...

Hui Wan; Xiaolan L. Wang; Val R. Swail

2010-03-01T23:59:59.000Z

349

Angular frequency analysis of wind turbines by means of digital image processing  

Science Conference Proceedings (OSTI)

This paper proposes a method to calculate the angular frequency of a wind turbine by using Artificial Vision techniques. For a given video in which several wind turbines appear, the set of frames that compose it are taken out. Then, a certain frame is ... Keywords: angular frequency, image processing, wind turbine

R. Gonzlez Lpez; L. Snchez; Eduardo Calvo

2010-02-01T23:59:59.000Z

350

NETL: Carbon Sequestration Atlas of the U.S. and Canada  

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

the first and second editions of the United States Carbon Utilization and Storage Atlas (Atlas I and Atlas II, respectively) have been removed from the NETL website. Atlas...

351

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

Science Conference Proceedings (OSTI)

With wind energy expanding rapidly in the U.S. and abroad, and with an increasing number of communities considering wind power development nearby, there is an urgent need to empirically investigate common community concerns about wind project development. The concern that property values will be adversely affected by wind energy facilities is commonly put forth by stakeholders. Although this concern is not unreasonable, given property value impacts that have been found near high voltage transmission lines and other electric generation facilities, the impacts of wind energy facilities on residential property values had not previously been investigated thoroughly. The present research collected data on almost 7,500 sales of singlefamily homes situated within 10 miles of 24 existing wind facilities in nine different U.S. states. The conclusions of the study are drawn from eight different hedonic pricing models, as well as both repeat sales and sales volume models. The various analyses are strongly consistent in that none of the models uncovers conclusive evidence of the existence of any widespread property value impacts that might be present in communities surrounding wind energy facilities. Specifically, neither the view of the wind facilities nor the distance of the home to those facilities is found to have any consistent, measurable, and statistically significant effect on home sales prices. Although the analysis cannot dismiss the possibility that individual homes or small numbers of homes have been or could be negatively impacted, it finds that if these impacts do exist, they are either too small and/or too infrequent to result in any widespread, statistically observable impact.

Hoen, Ben; Wiser, Ryan; Cappers, Peter; Thayer, Mark; Sethi, Gautam

2009-12-02T23:59:59.000Z

352

Commissioning ATLAS Trigger  

E-Print Network (OSTI)

The ATLAS experiment at the Large Hadron Collider (LHC) will face the challenge of efficiently selecting interesting candidate events in $pp$ collisions at 14 TeV centre-of-mass energy, whilst rejecting the enormous number of background events. Therefore it is equipped with a three level trigger system. The first level is is hardware based and uses coarse granularity calorimeter information and fast readout muon chambers. The second and third level triggers, which are software based, will need to reduce the first level trigger output rate of ~ 75 kHz to ~ 200 Hz written out to mass storage. The progress in commissioning of this system will be reviewed in this paper.

Tomasz Bold; for Atlas Tdaq

2008-10-20T23:59:59.000Z

353

Consumer Energy Atlas  

Science Conference Proceedings (OSTI)

This first edition of the Atlas provides, in reference form, a central source of information to consumers on key contacts concerned with energy in the US. Energy consumers need information appropriate to local climates and characteristics - best provided by state and local governments. The Department of Energy recognizes the authority of state and local governments to manage energy programs on their own. Therefore, emphasis has been given to government organizations on both the national and state level that influence, formulate, or administer policies affecting energy production, distribution, and use, or that provide information of interest to consumers and non-specialists. In addition, hundreds of non-government energy-related membership organizations, industry trade associations, and energy publications are included.

Not Available

1980-06-01T23:59:59.000Z

354

Analysis of the value of battery storage with wind and photovoltaic generation to the Sacramento Municipal Utility District  

DOE Green Energy (OSTI)

This report describes the results of an analysis to determine the economic and operational value of battery storage to wind and photovoltaic (PV) generation technologies to the Sacramento Municipal Utility District (SMUD) system. The analysis approach consisted of performing a benefit-cost economic assessment using established SMUD financial parameters, system expansion plans, and current system operating procedures. This report presents the results of the analysis. Section 2 describes expected wind and PV plant performance. Section 3 describes expected benefits to SMUD associated with employing battery storage. Section 4 presents preliminary benefit-cost results for battery storage added at the Solano wind plant and the Hedge PV plant. Section 5 presents conclusions and recommendations resulting from this analysis. The results of this analysis should be reviewed subject to the following caveat. The assumptions and data used in developing these results were based on reports available from and interaction with appropriate SMUD operating, planning, and design personnel in 1994 and early 1995 and are compatible with financial assumptions and system expansion plans as of that time. Assumptions and SMUD expansion plans have changed since then. In particular, SMUD did not install the additional 45 MW of wind that was planned for 1996. Current SMUD expansion plans and assumptions should be obtained from appropriate SMUD personnel.

Zaininger, H.W. [Zaininger Engineering Co., Inc., Roseville, CA (United States)

1998-08-01T23:59:59.000Z

355

Opportunities for Use and Development of Collaborative Tools in ATLAS  

E-Print Network (OSTI)

This document presents an assessment of the current and expected needs of the ATLAS Collaboration in the development, deployment, usage, and maintenance of collaborative tools to facilitate its internal and external communications, member training, education, and public outreach. It is prepared in response to a request by the ATLAS management to investigate these needs, to survey the current status, and to propose solutions where needed. We conclude the document with a set of recommendations designed to address selected immediate needs and to position the Collaboration for the anticipated growing demands for collaborative tools in a Grid-enabled analysis environment.

Goldfarb, S; McKee, S P; Neal, H A; Finholt, T A; Olson, G M; Birnholtz, J P; Hofer, E; Storr, M; Vitaglione, G; Hardin, J B; Severance, C

2003-01-01T23:59:59.000Z

356

Analysis of Wind Power and Load Data at Multiple Time Scales  

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

47E 47E ERNEST ORLANDO LAWRENCE BERKELEY NATIONAL LABORATORY Analysis of Wind Power and Load Data at Multiple Time Scales Katie Coughlin and Joseph H. Eto Environmental Energy Technologies Division December 2010 The work described in this report was funded by the Federal Energy Regulatory Commission, Office of Electric Reliability. The Lawrence Berkeley National Laboratory is operated by the University of California for the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. Disclaimer This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor The Regents of the

357

Incorporation of Multi-Member Substructure Capabilities in FAST for Analysis of Offshore Wind Turbines: Preprint  

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

Incorporation of Multi-Member Incorporation of Multi-Member Substructure Capabilities in FAST for Analysis of Offshore Wind Turbines Preprint H. Song, A. Robertson, and J. Jonkman National Renewable Energy Laboratory D. Sewell University of Delaware Presented at the Offshore Technology Conference Houston, Texas April 30-May 3, 2012 Conference Paper NREL/CP-5000-53676 May 2012 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (Alliance), a contractor of the US Government under Contract No. DE-AC36-08GO28308. Accordingly, the US Government and Alliance retain a nonexclusive royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for US Government purposes. This report was prepared as an account of work sponsored by an agency of the United States government.

358

Ex Post Analysis of Economic Impacts from Wind Power Development in U.S. Counties  

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

LBNL# 5793E LBNL# 5793E Ex Post Analysis of Economic Impacts from Wind Power Development in U.S. Counties Jason P. Brown 1 USDA, Economic Research Service 355 E St. SW, Washington, D.C. 20024 jbrown@ers.usda.gov John Pender USDA, Economic Research Service 355 E St. SW, Washington, D.C. 20024 jpender@ers.usda.gov Ryan Wiser Lawrence Berkeley National Laboratory 1 Cyclotron Road, Berkeley, CA 94720 RHWiser@lbl.gov Eric Lantz National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, CO 80401 eric.lantz@nrel.gov Ben Hoen Lawrence Berkeley National Laboratory 20 Sawmill Road, Milan, NY 1257 BHoen@lbl.gov Pre-print of article submitted for publication to Energy Economics. Download from: http://www.sciencedirect.com/science/article/pii/S0140988312001466

359

Economic analysis of wind-powered farmhouse and farm building heating systems. Final report  

DOE Green Energy (OSTI)

The study evaluated the break-even values of wind energy for selected farmhouses and farm buildings focusing on the effects of thermal storage on the use of WECS production and value. Farmhouse structural models include three types derived from a national survey - an older, a more modern, and a passive solar structure. The eight farm building applications that were analyzed include: poultry-layers, poultry-brooding/layers, poultry-broilers, poultry-turkeys, swine-farrowing, swine-growing/finishing, dairy, and lambing. These farm buildings represent the spectrum of animal types, heating energy use, and major contributions to national agricultural economic values. All energy analyses were based on hour-by-hour computations which allowed for growth of animals, sensible and latent heat production, and ventilation requirements. Hourly or three-hourly weather data obtained from the National Climatic Center was used for the nine chosen analysis sites, located throughout the United States and corresponding to regional agricultural production centers.

Stafford, R.W.; Greeb, F.J.; Smith, M.F.; Des Chenes, C.; Weaver, N.L.

1981-01-01T23:59:59.000Z

360

NREL: Wind Research - Projects  

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

Projects Projects NREL's wind energy research and development projects focus on reducing the cost of wind technology and expanding access to wind energy sites. Our specialized technical expertise, comprehensive design and analysis tools, and unique testing facilities help industry overcome challenges to bringing new wind technology to the marketplace. Some of these success stories are described in NREL's Wind R&D Success Stories. We also work closely with universities and other national laboratories supporting fundamental research in wind technologies, including aerodynamics, aeroacoustics, and material sciences essential in the development of new blade technologies and advanced controls, power electronics, and testing to further refine drivetrain topology.

Note: This page contains sample records for the topic "wind atlas analysis" 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

Encoding Probabilistic Brain Atlases Using Bayesian Inference  

E-Print Network (OSTI)

This paper addresses the problem of creating probabilistic brain atlases from manually labeled training data. Probabilistic atlases are typically constructed by counting the relative frequency of occurrence of labels in ...

Van Leemput, Koen

362

Commissioning of the ATLAS Liquid Argon Calorimeter  

E-Print Network (OSTI)

The in-situ commissioning of the ATLAS liquid argon calorimeter is taking place since three years. During this period, it has been fully tested by means of frequent calibration runs, and the analysis of the large cosmic muon data samples and of the few beam splash events that occurred on September 10th, 2008. This has allowed to obtain a stable set of calibration constants for the first collisions, and to measure the in-situ calorimeter performances that were found to be at the expected level.

S. Laplace

2010-05-17T23:59:59.000Z

363

Analysis of SWADE Discus N Wind Speed and Wave Height Time Series. Part II: Quantitative Growth Rates during a Storm  

Science Conference Proceedings (OSTI)

In Part I, wind speed and wave height time series obtained from the Discus N buoy during two storm events recorded in the SWADE experiment were analyzed using discrete wavelet packet transforms. One result of the analysis is that distinct tightly ...

Jorge F. Willemsen

1997-06-01T23:59:59.000Z

364

Analysis of Loads and Wind Energy Potential for Remote Power Stations in Alaska University of Massachusetts Amherst  

E-Print Network (OSTI)

Analysis of Loads and Wind Energy Potential for Remote Power Stations in Alaska Mia Devine Electric Use (kWh/year) 2,173,400 1,032,800 2,520,500 Average Load 300 kW 140 kW 280 kW Peak Load 600 k load profile. Villages usuall

Massachusetts at Amherst, University of

365

A comparative analysis of business structures suitable for farmer-owned wind power projects in the United States  

E-Print Network (OSTI)

ability to profitably farm the wind through ownership ofability to profitably farm the wind. Second, in recentportion of their farm to a commercial wind developer. An

Bolinger, Mark; Wiser, Ryan

2004-01-01T23:59:59.000Z

366

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

E-Print Network (OSTI)

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

Hoen, Ben

2010-01-01T23:59:59.000Z

367

Ertek, G., Tun, M.M., Kurtaraner, E., Kebude, D., 2012, 'Insights into the Efficiencies of On-Shore Wind Turbines: A Data-Centric Analysis', INISTA 2012 Conference. July 2-4, 2012, Trabzon,  

E-Print Network (OSTI)

as benchmark by inefficient ones. Keywords- wind turbines; wind energy; data envelopment analysis (DEA fossil fuel derived electricity. Wind turbines are mechatronic devices that convert wind energy into electrical energy via mechanical energy (Figure 1). Due to the fact that the potential commercially viable

Yanikoglu, Berrin

368

Development of a 2-kilowatt high-reliability wind machine. Phase I. Design and analysis. Volume II. Technical report  

Science Conference Proceedings (OSTI)

A high reliability wind machine rated for 2 kW at 9 m/s has been designed to be cost-effective for remote site use. To meet or exceed environmental conditions as specified in Contract PF64410F, the resulting design defines a rugged, relatively simple wind machine. Rigorous fatigue analysis for structural components and development of redundant systems for electrical components led to an expected mean time between failures of 12.35 years. Approximately one year into the research and development program a completed design meeting contract stipulations is being submitted to the contract buyer. The design is for a horizontal axis, down-wind machine with two wooden blades spanning 5 meters diameter. Positive rotor speed control is accomplished through a centrifugally governed variable pitch stalling rotor. Design merits have been confirmed through dynamic truck testing.

Drake, W.; Clews, H.; Cordes, J.; Johnson, B.; Murphy, P.

1980-01-01T23:59:59.000Z

369

Development of a 2-kilowatt high-reliability wind machine. Phase I. Design and analysis. Volume I. Executive summary  

Science Conference Proceedings (OSTI)

A high reliability wind machine rated for 2 kW at 9 m/s has been designed to be cost-effective for remote site use. To meet or exceed environmental conditions as specified in Contract PF64410F, the resulting design defines a rugged, relatively simple wind machine. Rigorous fatigue analysis for structural components and development of redundant systems for electrical components led to an expected mean time between failures of 12.35 years. Approximately one year into the research and development program, a completed design meeting contract stipulations is being submitted to the contract buyer. The design is for a horizontal axis, down-wind machine with two wooden blades spanning 5 meters diameter. Positive rotor speed control is accomplished through a centrifugally governed variable pitch, stalling rotor. Design merits have been confirmed through dynamic truck testing.

Drake, W.; Clews, H.; Cordes, J.; Johnson, B.; Murphy, P.

1980-01-01T23:59:59.000Z

370

A comparative analysis of business structures suitable forfarmer-owned wind power projects in the United States  

DOE Green Energy (OSTI)

For years, farmers in the United States have looked with envy on their European counterparts' ability to profitably farm the wind through ownership of distributed, utility-scale wind projects. Only within the past few years, however, has farmer- or community-owned wind power development become a reality in the United States. The primary hurdle to this type of development in the United States has been devising and implementing suitable business and legal structures that enable such projects to take advantage of tax-based federal incentives for wind power. This article discusses the limitations of such incentives in supporting farmer- or community-owned wind projects, describes four ownership structures that potentially overcome such limitations, and finally conducts comparative financial analysis on those four structures, using as an example a hypothetical 1.5 MW farmer-owned project located in the state of Oregon. We find that material differences in the competitiveness of each structure do exist, but that choosing the best structure for a given project will largely depend on the conditions at hand; e.g., the ability of the farmer(s) to utilize tax credits, preference for individual versus ''cooperative'' ownership, and the state and utility service territory in which the project will be located.

Bolinger, Mark; Wiser, Ryan

2004-11-11T23:59:59.000Z

371

Stakeholder Engagement and Outreach: Wind Farms  

Wind Powering America (EERE)

Wind Farms Wind Farms When establishing wind farms, wind energy developers generally approach landowners where they want to build. Interest in wind farms is frequently spurred by external pressures such as tax and other financial incentives and legislative mandates. Since each situation is influenced by local policies and permitting, we can only provide general guidance to help you learn about the process of installing wind turbines. Publications Wind Project Development Process Permitting of Wind Energy Facilities: A Handbook. (August 2002). National Wind Coordinating Collaborative. Landowner Frequently Asked Questions and Answers. (August 2003). "State Wind Working Group Handbook." pp. 130-133. Software Wind Energy Finance Calculator Tool for financial analysis of

372

SASS Wind Ambiguity Removal by Direct Minimization  

Science Conference Proceedings (OSTI)

A gridded surface wind analysis is obtained by minimizing an objective function, the magnitude of which measures the error made by the gridded analysis in fitting the SASS wind data, the conventional surface wind observations and the forecast ...

Ross N. Hoffman

1982-05-01T23:59:59.000Z

373

Evaluating state markets for residential wind systems: Results from an economic and policy analysis tool  

E-Print Network (OSTI)

wind system. The incentive amount proposed as part of the 2004 Energy Policywind system. The incentive amount proposed as part of the 2004 Energy Policy

Edwards, Jennifer L.; Wiser, Ryan; Bolinger, Mark; Forsyth, Trudy

2004-01-01T23:59:59.000Z

374

Evaluating state markets for residential wind systems: Results from an economic and policy analysis tool  

E-Print Network (OSTI)

state retail electricity rates, state sales and property taxWind Systems state electricity rates, which increase thethe average state retail electricity rate, meaning that

Edwards, Jennifer L.; Wiser, Ryan; Bolinger, Mark; Forsyth, Trudy

2004-01-01T23:59:59.000Z

375

Evaluating state markets for residential wind systems: Results from an economic and policy analysis tool  

E-Print Network (OSTI)

and statewide average residential electricity rates below $Average statewide residential electricity rates were takenFor Residential Wind Systems state electricity rates, which

Edwards, Jennifer L.; Wiser, Ryan; Bolinger, Mark; Forsyth, Trudy

2004-01-01T23:59:59.000Z

376

An Analysis of Wind Power Development in the Town of Hull, MA  

DOE Green Energy (OSTI)

Over the past three decades the Town of Hull, MA has solidified its place in U.S. wind energy history through its leadership in community-based generation. This is illustrated by its commissioning of the first commercial-scale wind turbine on the Atlantic coastline, the first suburban-sited turbine in the continental United States, pursuit of community-based offshore wind, and its push toward creating an energy independent community. The town's history and demographics are briefly outlined, followed by experience in projects to provide wind power, including pre-construction and feasibility efforts, financial aspects, and market/industry factors.

Adams, Christopher

2013-06-30T23:59:59.000Z

377

Analysis of Wind Power and Load Data at Multiple Time Scales  

E-Print Network (OSTI)

29 Appendix A. PJM Windat Multiple Time Scales Appendix A. PJM Wind Data The windpower data for the PJM control area cover the period January

Coughlin, Katie

2011-01-01T23:59:59.000Z

378

Dynamics Modeling and Loads Analysis of an Offshore Floating Wind Turbine  

SciTech Connect

This report describes the development, verification, and application of a comprehensive simulation tool for modeling coupled dynamic responses of offshore floating wind turbines.

Jonkman, J. M.

2007-12-01T23:59:59.000Z

379

Multiblade Coordinate Transformation and Its Application to Wind Turbine Analysis: Preprint  

SciTech Connect

This paper describes the mulitblade coordinate transformation (MBC) modeling process that integrates the dynamics of individual wind turbine blades and expresses them as fixed frames.

Bir, G.

2008-01-01T23:59:59.000Z

380

Analysis of Sub-Hourly Ramping Impacts of Wind Energy and Balancing Area Size: Preprint  

DOE Green Energy (OSTI)

In this paper, we analyze sub-hourly ramping requirements and the benefit of combining Balancing Authority operations with significant wind penetrations.

Milligan, M.; Kirby, B.

2008-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "wind atlas analysis" 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

Design and Analysis of a Wind Energy Harvesting Circuit Using Piezoelectric Polymers.  

E-Print Network (OSTI)

?? This thesis investigates a relatively new method for harvesting wind energy by using flexible piezoelectric polymers with additional sails to increase their ability to (more)

Thornton, Jameson J

2011-01-01T23:59:59.000Z

382

Promoting wind power in China : welfare analysis of Mandated Market Share (MMS).  

E-Print Network (OSTI)

??Along with peoples profound recognition of the importance of wind power, countries are seeking for feasible and effective policy regimes or mechanisms to explore and (more)

Fang, Fang

2007-01-01T23:59:59.000Z

383

Screening Analysis for the Environmental Risk Evaluation System Fiscal Year 2011 Report Environmental Effects of Offshore Wind Energy  

SciTech Connect

Potential environmental effects of offshore wind (OSW) energy development are not well understood, and yet regulatory agencies are required to make decisions in spite of substantial uncertainty about environmental impacts and their long-term consequences. An understanding of risks associated with interactions between OSW installations and avian and aquatic receptors, including animals, habitats, and ecosystems, can help define key uncertainties and focus regulatory actions and scientific studies on interactions of most concern. During FY 2011, Pacific Northwest National Laboratory (PNNL) scientists adapted and applied the Environmental Risk Evaluation System (ERES), first developed to examine the effects of marine and hydrokinetic energy devices on aquatic environments, to offshore wind development. PNNL scientists conducted a risk screening analysis on two initial OSW cases: a wind project in Lake Erie and a wind project off the Atlantic coast of the United States near Atlantic City, New Jersey. The screening analysis revealed that top-tier stressors in the two OSW cases were the dynamic effects of the device (e.g., strike), accidents/disasters, and effects of the static physical presence of the device, such as alterations in bottom habitats. Receptor interactions with these stressors at the highest tiers of risk were dominated by threatened and endangered animals. Risk to the physical environment from changes in flow regime also ranked high. Peer review of this process and results will be conducted during FY 2012. The ERES screening analysis provides an assessment of the vulnerability of environmental receptors to stressors associated with OSW installations; a probability analysis is needed to determine specific risk levels to receptors. As more data become available that document effects of offshore wind farms on specific receptors in U.S. coastal and Great Lakes waters, probability analyses will be performed.

Copping, Andrea E.; Hanna, Luke A.

2011-11-01T23:59:59.000Z

384

ATLAS APPROVED EXPERIMENTS  

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

8MAY98 8MAY98 Exp # Spokesperson Experiment Title Days 433-9 Miller Ion Irradiations of Anisotropic High-Tc Superconductors: Probing Dynamics of Magnetic Vortices 2 651-2 Paul Accelerator-Mass-Spectrometry Measurements of Natural 236U Concentrations with the ECR-ATLAS System 4 667-2 Janssens Unsafe Coulex of the 238,239Pu Nuclei 4 669-2 Carpenter Excited States Associated with Different Shapes in 178Hg and Neighboring Odd-A Nuclei 4 673-2 Lister A Study of Radiative Decay from High Lying States in 24Mg 5 689-2 Freeman Spectroscopy of Odd Tin Isotopes Approaching 100Sn 5 693-2 Reiter Structure and Formation Mechanism of Heavy Elements - Request for additional beam time for Experiment 693 - 6 706 Kwok Heavy-Ion Lithography on High Temperature Superconductors 2 708 Yu In-Beam Spectroscopy Study of the Proton Emitter 109I with Recoil-Decay Tagging Technique

385

ATLAS Maintenance and Operation management system  

E-Print Network (OSTI)

The maintenance and operation of the ATLAS detector will involve thousands of contributors from 170 physics institutes. Planning and coordinating the action of ATLAS members, ensuring their expertise is properly leveraged and that no parts of the detector are understaffed or overstaffed will be a challenging task. The ATLAS Maintenance and Operation application (referred to as Operation Task Planner inside the ATLAS experiment) offers a fluent web based interface that combines the flexibility and comfort of a desktop application, intuitive data visualization and navigation techniques, with a lightweight service oriented architecture. We will review the application, its usage within the ATLAS experiment, its underlying design and implementation.

Copy, B

2007-01-01T23:59:59.000Z

386

Analysis of the effects of integrating wind turbines into a conventional utility: a case study. Final report  

DOE Green Energy (OSTI)

The impact on a utility incorporating wind turbine generation due to wind speed sampling frequency, wind turbine performance model, and wind speed forecasting accuracy is examined. The utility analyzed in the study was the Los Angeles Department of Water and Power and the wind turbine assumed was the MOD-2. The sensitivity of the economic value of wind turbine generation to wind speed sampling frequency and wind turbine modeling technique is examined as well as the impact of wind forecasting accuracy on utility operation and production costs. Wind speed data from San Gorgonio Pass, California during 1979 are used to estimate wind turbine performance using four different simulation methods. (LEW)

Goldenblatt, M.K.; Wegley, H.L.; Miller, A.H.

1982-08-01T23:59:59.000Z

387

Analysis of the effects of integrating wind turbines into a conventional utility: a case study. Revised final report  

DOE Green Energy (OSTI)

The impact on a utility incorporating wind turbine generation due to wind speed sampling frequency, wind turbine performance model, and wind speed forecasting accuracy is examined. The utility analyzed in this study was the Los Angeles Department of Water and Power, and the wind turbine assumed was the MOD-2. The sensitivity of the economic value of wind turbine generation to wind speed sampling frequency and wind turbine modeling technique is examined as well as the impact of wind forecasting accuracy on utility operation and production costs. Wind speed data from San Gorgonio Pass, California during 1979 are used to estimate wind turbine performance using four different simulation methods. (LEW)

Goldenblatt, M.K.; Wegley, H.L.; Miller, A.H.

1983-03-01T23:59:59.000Z

388

ATLAS Equipment 1 June09  

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

Initiatives at ATLAS Initiatives at ATLAS Birger B. Back June 10, 2009. HELIOS Description: The Helical Orbit Spectrometer (HELIOS) is a novel spectrometer that will enable us to carry out detailed nuclear structure studies via inverse kinematics reactions using re-accelerated, neutron-rich beams from the new CARIBU injector as well as radioactive beams produced by the in-flight method at ATLAS. The spectrometer design has several advantages over conventional techniques using large-area Si detectors. These are: 1) avoidance of kinematical compression of states, 2) simple particle identification without ∆E measurements and the associated detection thresholds, 3) large acceptance achieved with relatively few Si detector channels. The superior performance of HELIOS

389

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

E-Print Network (OSTI)

Offshore Wind Power: Underlying Factors. Energy Policy. 35(Wind Development on Local Property Values. Renewable Energy Policy

Hoen, Ben

2010-01-01T23:59:59.000Z

390

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

E-Print Network (OSTI)

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

Hoen, Ben

2010-01-01T23:59:59.000Z

391

7th International Workshop on Large-Scale Integration of Wind Power and on Transmission Networks for Offshore Wind Farms Models for HLI analysis of power systems with  

E-Print Network (OSTI)

export? BACKGROUND The last decade has seen a remarkable increase in the number of wind installations. In Europe, Denmark is amongst the leading countries in wind generation in terms of installed capacity the consequences and challenges of high rates of wind generation from both a technical and economic perspective

Bak-Jensen, Birgitte

392

Stress and Fracture Analysis of a Class of Bonded Joints in Wind Turbine Blades  

E-Print Network (OSTI)

A simplified model is proposed to investigate the stress fields and the strain energy release rate (SERR) associated with cracks in bonded joints in wind turbine blades. The proposed two-dimensional model consists of nonparallel upper and lower shells with adhesive between the shells at the tapered end. Nonlinear finite element analysis (FEA) is performed in a systematic parametric study of material and geo- metric properties. Two failure modes and their locations are predicted at different combinations of parameters: yielding at the outside end of the adhesive and interface cracking at the inside end of the bondline. Effect of the shell curvature on the stress fields is also considered. Based on the classic beam theory and the beam-on-elastic-foundation (BOEF) assumption, stress and displacement fields of the adhesively-bonded joint were determined by a new theoretical model to support the results from the numerical computation. The failure analysis is continued by studying the effects of manufacturing defects in the adhesive bond. Single and multiple voids are embedded to simulate air bubble trapped in the interface. The numerical and analytical studies are conducted to investigate SERR associated with the voids and results are provided to illustrate the effects of void position and void size.

Chen, Chang

2013-05-01T23:59:59.000Z

393

ATLAS Videos and Multimedia Collection at CERN  

DOE Data Explorer (OSTI)

ATLAS is a particle physics experiment at the Large Hadron Collider at CERN; its detector searches for new discoveries in the head-on collisions of protons of extraordinarily high energy. Approximately 700 physicists, engineers and graduate students from 44 US institutions participate in the ATLAS collaboration, including four Department of Energy National Laboratories. In addition to the ATLAS Collaboration's home page and numerous ATLAS-related pages at the various research organizations involved, there are two primary ATLAS websites that provide the full range of information about this experiment at the Large Hadron Collider in at CERN, Switzerland. Videos and multimedia from the inception and construction of ATLAS and continuing on through current operations and scientific discoveries are found everywhere from Brookhaven Lab to YouTube to an official collection at the ATLAS Experiment page at CERN. This DDE citation guides you to the ATLAS Experiment page where multimedia offerings are organized into eight categories. They include documentary features and clips, animations of actual events and of simulated events, short video clips of the ATLAS Experiment, construction videos, educational videos, and public talks or presentations. Be sure to view also the ATLAS control room webcams and the live Event displays on the homepage when they are available. Note that the ATLAS Experiment also has a Blog and a Twitter presence.

None

394

Allegany County Wind Ordinance  

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

This ordinance sets requirements for industrial wind energy conversion systems. These requirements include minimum separation distances, setback requirements, electromagnetic interference analysis ...

395

Fact Sheet: Multilateral Solar and Wind Working Group | Department of  

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

Multilateral Solar and Wind Working Group Multilateral Solar and Wind Working Group Fact Sheet: Multilateral Solar and Wind Working Group A fact sheet detailling the development of a Multilateral Solar and Wind Working Group to promote accelerated deployment of solar and wind technologies by implementing recommendations from the MEF Technology Action Plan on Solar and Wind Technologies that was released by the Major Economies Forum Global Partnership in December 2009. The Multilateral Solar and Wind Working Group will focus its initial work on developing a Global Atlas for Solar and Wind Energy and a corresponding Long-Term Strategy on Joint Capacity Building. Fact Sheet: Multilateral Solar and Wind Working Group More Documents & Publications Renewables-Fact-Sheet.pdf Clean Energy Ministerial Press Fact Sheer

396

Analysis of Wind and Turbulence Fields in a Region with Complex Orography  

Science Conference Proceedings (OSTI)

In a region of about 1000 km2 with complex orography, 1-h averages of wind and turbulence fields were analyzed over a period of 1 yr. It was shown that spatial homogeneity and temporal stationarity of the wind fields as well as the degree of ...

Waldemar Feller; Fritz Gassmann

1997-09-01T23:59:59.000Z

397

Analysis of superconducting magnetic energy storage applications at a proposed wind farm site near Browning, Montana  

DOE Green Energy (OSTI)

A computer program was developed to analyze the viability of integrating superconducting magnetic energy storage (SMES) with proposed wind farm scenarios at a site near Browning, Montana. The program simulated an hour-by-hour account of the charge/discharge history of a SMES unit for a representative wind-speed year. Effects of power output, storage capacity, and power conditioning capability on SMES performance characteristics were analyzed on a seasonal, diurnal, and hourly basis. The SMES unit was assumed to be charged during periods when power output of the wind resource exceeded its average value. Energy was discharged from the SMES unit into the grid during periods of low wind speed to compensate for below-average output of the wind resource. The option of using SMES to provide power continuity for a wind farm supplemented by combustion turbines was also investigated. Levelizing the annual output of large wind energy systems operating in the Blackfeet area of Montana was found to require a storage capacity too large to be economically viable. However, it appears that intermediate-sized SMES economically levelize the wind energy output on a seasonal basis.

Gaustad, K.L.; De Steese, J.G.

1993-07-01T23:59:59.000Z

398

Diagnosing Santa Ana Winds in Southern California with Synoptic-Scale Analysis  

Science Conference Proceedings (OSTI)

Santa Ana winds (SAW) are among the most notorious fire-weather conditions in the United States and are implicated in wildfire and wind hazards in Southern California. This study employs large-scale reanalysis data to diagnose SAW through synoptic-...

John T. Abatzoglou; Renaud Barbero; Nicholas J. Nauslar

2013-06-01T23:59:59.000Z

399

Statistical Analysis of the Spatial Evolution of the Stationary Wind Wave Field  

Science Conference Proceedings (OSTI)

Detailed investigation of wind-generated water waves in a 5-m-long wind wave flume facility is reported. Careful measurements were carried out at a large number of locations along the test section and at numerous airflow rates. The evolution of ...

A. Zavadsky; D. Liberzon; L. Shemer

2013-01-01T23:59:59.000Z

400

Recent results from data analysis of dynamic stall on wind turbine blades  

DOE Green Energy (OSTI)

Wind turbines are subjected to dynamic loading from a variety of different sources. Wind shear and turbulence cause time-varying inflow that results in unsteady airloads. Tower shadow, upwind turbine wakes, and yaw angles also introduce unsteady inflow to wind turbine rotors. Wind turbine designers must predict these loads accurately in order to adequately design blades, hubs, and the remaining support structure to achieve a 30-year life. Structural analysts have not been able to predict mean or dynamic loads accurately enough to predict the fatigue life of major wind turbine components with confidence. Part of the problem is due to uncertainty in the stochastic wind environments as mentioned earlier. Another important part of the problem is the lack of basic knowledge of rotary wing airfoil stall performance. There is mounting evidence that dynamic stall may be related to dynamic loads that are greater than predictions. This paper describes some results of investigations of unsteady aerodynamic loads measured on a wind turbine blade. The objective of the investigation is to understand the steady and unsteady stall behavior of wind turbine blades. 13 refs.

Butterfield, C.P.; Simms, D. [National Renewable Energy Lab., Golden, CO (United States); Huyer, S. [Colorado Univ., Boulder, CO (United States)

1992-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "wind atlas analysis" 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

Wind Electrolysis: Hydrogen Cost Optimization  

DOE Green Energy (OSTI)

This report describes a hydrogen production cost analysis of a collection of optimized central wind based water electrolysis production facilities. The basic modeled wind electrolysis facility includes a number of low temperature electrolyzers and a co-located wind farm encompassing a number of 3MW wind turbines that provide electricity for the electrolyzer units.

Saur, G.; Ramsden, T.

2011-05-01T23:59:59.000Z

402

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

DOE Green Energy (OSTI)

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

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

1978-06-01T23:59:59.000Z

403

Transient Analysis of Cold Winds on Exposed Skin: Reflections on the Assessment of Wind Chill Equivalent Temperatures  

Science Conference Proceedings (OSTI)

A transient analysis of the humanenvironment thermal interaction in cold and windy environments is presented. The site selected to represent this interaction is the headface, which is depicted as a hollow cylinder wherein heat is conducted in ...

Avraham Shitzer

2008-03-01T23:59:59.000Z

404

Extreme Winds and Wind Effects on Structures  

Science Conference Proceedings (OSTI)

Extreme Winds and Wind Effects on Structures. The Engineering ... section. I. Extreme Winds: ... II. Wind Effects on Buildings. Database ...

2013-01-17T23:59:59.000Z

405

Preliminary Analysis and Case Study of Transmission Constraints and Wind Energy in the West: Preprint  

DOE Green Energy (OSTI)

Wind developers typically need long-term transmission service to finance their projects; however, most of the capacity on several key paths is reserved by existing firm contracts. Because non-firm contracts are only offered for periods up to 1 year, obtaining financing for the wind project is generally not possible when firm capacity is unavailable. However, sufficient capacity may exist on the constrained paths for new wind projects that can risk curtailment for a small number of hours of the year. This paper presents the results of a study sponsored by the National Renewable Energy Laboratory (NREL), a work group participant in the Rocky Mountain Area Transmission Study (RMATS). Using recent historical power flow data, case studies were conducted on the constrained paths between Wyoming-Colorado (TOT3) and Montana-Northwest, coinciding with areas of exceptional wind resources. The potential curtailment frequency for hypothetical 100-MW and 500-MW wind plants was calculated using hourly wind data. The results from the study indicate that sufficient potential exists for innovative transmission products that can help bring more wind to load centers and increase the efficiency of the existing transmission network.

Milligan, M.; Berger, D. P.

2005-05-01T23:59:59.000Z

406

MHK Atlas | Open Energy Information  

Open Energy Info (EERE)

MHK Atlas MHK Atlas Jump to: navigation, search Tool Summary LAUNCH TOOL Name: MHK Atlas Agency/Company /Organization: NREL Sector: Energy Focus Area: Water Power Topics: Resource assessment, Technology characterizations Resource Type: Dataset, Maps, Software/modeling tools User Interface: Website Website: maps.nrel.gov/node/65 Web Application Link: maps.nrel.gov/mhk_atlas Cost: Free OpenEI Keyword(s): Featured Coordinates: 39.7412019515°, -105.172290802° 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":39.7412019515,"lon":-105.172290802,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

407

Theory manual for FAROW version 1.1: A numerical analysis of the Fatigue And Reliability Of Wind turbine components  

DOE Green Energy (OSTI)

Because the fatigue lifetime of wind turbine components depends on several factors that are highly variable, a numerical analysis tool called FAROW has been created to cast the problem of component fatigue life in a probabilistic framework. The probabilistic analysis is accomplished using methods of structural reliability (FORM/SORM). While the workings of the FAROW software package are defined in the user's manual, this theory manual outlines the mathematical basis. A deterministic solution for the time to failure is made possible by assuming analytical forms for the basic inputs of wind speed, stress response, and material resistance. Each parameter of the assumed forms for the inputs can be defined to be a random variable. The analytical framework is described and the solution for time to failure is derived.

WUBTERSTEUBMSTEVEB R.; VEERS,PAUL S.

2000-01-01T23:59:59.000Z

408

The GALEX Ultraviolet Atlas of Nearby Galaxies  

E-Print Network (OSTI)

We present images, integrated photometry, surface-brightness and color profiles for a total of 1034 nearby galaxies recently observed by the GALEX satellite in its far-ultraviolet (FUV; 1516A) and near-ultraviolet (NUV; 2267A) bands. (...) This data set has been complemented with archival optical, near-infrared, and far-infrared fluxes and colors. We find that the integrated (FUV-K) color provides robust discrimination between elliptical and spiral/irregular galaxies and also among spiral galaxies of different sub-types. Elliptical galaxies with brighter K-band luminosities (i.e. more massive) are redder in (NUV-K) color but bluer in (FUV-NUV) than less massive ellipticals. In the case of the spiral/irregular galaxies our analysis shows the presence of a relatively tight correlation between the (FUV-NUV) color and the total infrared-to-UV ratio. The correlation found between (FUV-NUV) color and K-band luminosity (with lower luminosity objects being bluer than more luminous ones) can be explained as due to an increase in the dust content with galaxy luminosity. The images in this Atlas along with the profiles and integrated properties are publicly available through a dedicated web page at http://nedwww.ipac.caltech.edu/level5/GALEX_Atlas/

A. Gil de Paz; S. Boissier; B. F. Madore; M. Seibert; Y. H. Joe; A. Boselli; T. K. Wyder; D. Thilker; L. Bianchi; S. -C. Rey; R. M. Rich; T. A. Barlow; T. Conrow; K. Forster; P. G. Friedman; D. C. Martin; P. Morrissey; S. G. Neff; D. Schiminovich; T. Small; J. Donas; T. M. Heckman; Y. -W. Lee; B. Milliard; A. S. Szalay; S. Yi

2006-06-19T23:59:59.000Z

409

Event Reconstruction Algorithms for the ATLAS Trigger  

Science Conference Proceedings (OSTI)

The ATLAS experiment under construction at CERN is due to begin operation at the end of 2007. The detector will record the results of proton-proton collisions at a center-of-mass energy of 14 TeV. The trigger is a three-tier system designed to identify in real-time potentially interesting events that are then saved for detailed offline analysis. The trigger system will select approximately 200 Hz of potentially interesting events out of the 40 MHz bunch-crossing rate (with 10{sup 9} interactions per second at the nominal luminosity). Algorithms used in the trigger system to identify different event features of interest will be described, as well as their expected performance in terms of selection efficiency, background rejection and computation time per event. The talk will concentrate on recent improvements and on performance studies, using a very detailed simulation of the ATLAS detector and electronics chain that emulates the raw data as it will appear at the input to the trigger system.

Fonseca-Martin, T.; /CERN; Abolins, M.; /Michigan State U.; Adragna, P.; /Queen Mary, U. of London; Aleksandrov, E.; /Dubna, JINR; Aleksandrov, I.; /Dubna, JINR; Amorim, A.; /Lisbon, LIFEP; Anderson, K.; /Chicago U., EFI; Anduaga, X.; /La Plata U.; Aracena, I.; /SLAC; Asquith, L.; /University Coll. London; Avolio, G.; /CERN; Backlund, S.; /CERN; Badescu, E.; /Bucharest, IFIN-HH; Baines, J.; /Rutherford; Barria, P.; /Rome U. /INFN, Rome; Bartoldus, R.; /SLAC; Batreanu, S.; /Bucharest, IFIN-HH /CERN; Beck, H.P.; /Bern U.; Bee, C.; /Marseille, CPPM; Bell, P.; /Manchester U.; Bell, W.H.; /Glasgow U. /Pavia U. /INFN, Pavia /Regina U. /CERN /Annecy, LAPP /Paris, IN2P3 /Royal Holloway, U. of London /Napoli Seconda U. /INFN, Naples /Argonne /CERN /UC, Irvine /Barcelona, IFAE /Barcelona, Autonoma U. /CERN /Montreal U. /CERN /Glasgow U. /Michigan State U. /Bucharest, IFIN-HH /Napoli Seconda U. /INFN, Naples /New York U. /Barcelona, IFAE /Barcelona, Autonoma U. /Salento U. /INFN, Lecce /Pisa U. /INFN, Pisa /Bucharest, IFIN-HH /UC, Irvine /CERN /Glasgow U. /INFN, Genoa /Genoa U. /Lisbon, LIFEP /Napoli Seconda U. /INFN, Naples /UC, Irvine /Valencia U. /Rio de Janeiro Federal U. /University Coll. London /New York U.; /more authors..

2011-11-09T23:59:59.000Z

410

ATLAS Tracking Event Data Model -- 12.0.0  

E-Print Network (OSTI)

offline/? cvsroot=atlas : Tracking/TrkEvent/TrkSegment [14]offline/? cvsroot=atlas : Tracking/TrkEvent/TrkSpacePoint [offline/? cvsroot=atlas : Tracking/TrkDetDescr/TrkSurface

Akesson, F.; ATLAS

2009-01-01T23:59:59.000Z

411

NREL: Wind Research - Systems Engineering Home Page  

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

Search More Search Options Site Map The National Wind Technology Center (NWTC) wind energy systems engineering initiative has developed an analysis platform to leverage its...

412

An approach to the development and analysis of wind turbine control algorithms  

DOE Green Energy (OSTI)

The objective of this project is to develop the capability of symbolically generating an analytical model of a wind turbine for studies of control systems. This report focuses on a theoretical formulation of the symbolic equations of motion (EOMs) modeler for horizontal axis wind turbines. In addition to the power train dynamics, a generic 7-axis rotor assembly is used as the base model from which the EOMs of various turbine configurations can be derived. A systematic approach to generate the EOMs is presented using d`Alembert`s principle and Lagrangian dynamics. A Matlab M file was implemented to generate the EOMs of a two-bladed, free yaw wind turbine. The EOMs will be compared in the future to those of a similar wind turbine modeled with the YawDyn code for verification. This project was sponsored by Sandia National Laboratories as part of the Adaptive Structures and Control Task. This is the final report of Sandia Contract AS-0985.

Wu, K.C.

1998-03-01T23:59:59.000Z

413

An Analysis of Strong Wind Events Simulated in a GCM near Casey in the Antarctic  

Science Conference Proceedings (OSTI)

Strong wind events occurring near Casey (Antarctica) in a long July GCM simulation have been studied to determine the relative roles played by the synoptic situation and the katabatic flow in producing these episodes. It has been found that the ...

Bradley F. Murphy; Ian Simmonds

1993-02-01T23:59:59.000Z

414

Evaluating state markets for residential wind systems: Results from an economic and policy analysis tool  

E-Print Network (OSTI)

a total annual cost (National Renewable Energy Laboratory,credit levelized cost of energy National Renewable EnergyRenewable Energy Resources Program Grants. g The valuation of the wind energy system is 0 percent of cost

Edwards, Jennifer L.; Wiser, Ryan; Bolinger, Mark; Forsyth, Trudy

2004-01-01T23:59:59.000Z

415

Wind-driven sea level variability on the California coast: an adjoint sensitivity analysis  

Science Conference Proceedings (OSTI)

Effects of atmospheric forcing on coastal sea surface height near Port San Luis, central California, are investigated using a regional state estimate and its adjoint. The physical pathways for the propagation of non-local ((100) km) wind stress ...

Ariane Verdy; Matthew R. Mazloff; Bruce D. Cornuelle; Sung Yong Kim

416

Scopes and Challenges of Dual-Doppler Lidar Wind MeasurementsAn Error Analysis  

Science Conference Proceedings (OSTI)

Pulsed Doppler lidars are powerful tools for long-range high-resolution measurements of radial wind velocities. With the development of commercial Doppler lidars and the reduction of acquisition costs, dual-Doppler lidar systems will be become ...

Christina Stawiarski; Katja Trumner; Christoph Knigge; Ronald Calhoun

417

Variational Analysis for Airborne Conically Scanned Doppler Lidar to Retrieve Mesoscale Wind Fields  

Science Conference Proceedings (OSTI)

An airborne pulsed Doppler lidar implementing a downlooking conical scan rotating around the vertical axis is under development. The information contained in the measured radial velocities is studied to assess the capacity to retrieve the 3D wind ...

Alain Dabas; Julie Prin; Pierre H. Flamant

1997-10-01T23:59:59.000Z

418

Jovian Winds from Voyager 2. Part II: Analysis of Eddy Transports  

Science Conference Proceedings (OSTI)

Previous Voyager 1 and 2 Jovian circulation measurements exhibit a large positive correlation between eddy momentum transports and the meridional shear of the zonal wind component, implying a very large rate of conversion of eddy kinetic energy ...

L. A. Sromovsky; H. E. Revercomb; V. E. Suomi; S. S. Limaye; R. J. Krauss

1982-07-01T23:59:59.000Z

419

Analysis of Spatiotemporal Balancing between Wind and Solar Energy Resources in the Southern Iberian Peninsula  

Science Conference Proceedings (OSTI)

Electricity from wind and, to a lesser extent, solar energy is intermittent and not controllable. Unlike conventional power generation, therefore, this electricity is not suitable to supply base-load electric power. In the future, with greater ...

F. J. Santos-Alamillos; D. Pozo-Vzquez; J. A. Ruiz-Arias; V. Lara-Fanego; J. Tovar-Pescador

2012-11-01T23:59:59.000Z

420

Analysis of In-Flight Winds for Shuttle Mission STS 51-L  

Science Conference Proceedings (OSTI)

Television photos of smoke plumes an analyzed to estimate meridional wind shear on the space shuttle Challenger associated with the accident of Mission 51-L. Gust velocities were obtained by detailed examination of the debris trails. The shuttle ...

George H. Fichtl; Nathaniel D. Reynolds; Alan E. Johnston; Stanley I. Adelfang; Wade Batts; Larry Lott; Paul J. Meyer; Orvel E. Smith; Marion S. Swint; Otha H. Vaughan Jr.

1988-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "wind atlas analysis" 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

Sea Ice and Current Response to the Wind: A Vector Regressional Analysis Approach  

Science Conference Proceedings (OSTI)

The authors describe a two-dimensional (vector) regressional model for examining the anisotropic response of ice drift and ocean current velocity (drift velocity) to surface wind forcing. Illustration of the method is limited to sea ice ...

Alexander B. Rabinovich; Georgy V. Shevchenko; Richard E. Thomson

2007-06-01T23:59:59.000Z

422

Cluster Analysis of Hourly Wind Measurements to Reveal Synoptic Regimes Affecting Air Quality  

Science Conference Proceedings (OSTI)

A clustering algorithm is developed to study hourly, ground-level wind measurements obtained from a network of monitoring stations positioned throughout the San Francisco Bay Area of California. A statistical model based on principal components ...

Scott Beaver; Ahmet Palazoglu

2006-12-01T23:59:59.000Z

423

Analysis of the Wind Field Evolution Associated with the Extratropical Transition of Bonnie (1998)  

Science Conference Proceedings (OSTI)

Extratropical transition brings about a number of environmentally induced structural changes within a transitioning tropical cyclone. Of particular interest among these changes is the acceleration of the wind field away from the cyclones center ...

Clark Evans; Robert E. Hart

2008-06-01T23:59:59.000Z

424

Surface Wind Regionalization over Complex Terrain: Evaluation and Analysis of a High-Resolution WRF Simulation  

Science Conference Proceedings (OSTI)

This study analyzes the daily-mean surface wind variability over an area characterized by complex topography through comparing observations and a 2-km-spatial-resolution simulation performed with the Weather Research and Forecasting (WRF) model ...

Pedro A. Jimnez; J. Fidel Gonzlez-Rouco; Elena Garca-Bustamante; Jorge Navarro; Juan P. Montvez; Jordi Vil-Guerau de Arellano; Jimy Dudhia; Antonio Muoz-Roldan

2010-02-01T23:59:59.000Z

425

A sensitivity analysis of the treatment of wind energy in the AEO99 version of NEMS  

E-Print Network (OSTI)

presents forecasts of energy supply, demand and pricesa reference case forecast with fossil fuel prices close toforecast for wind technologies. The AEOs annual report of energy supply, demand, and prices

Osborn, Julie G.; Wood, Frances; Richey, Cooper; Sanders, Sandy; Short, Walter; Koomey, Jonathan

2001-01-01T23:59:59.000Z

426

Scopes and Challenges of Dual-Doppler Lidar Wind MeasurementsAn Error Analysis  

Science Conference Proceedings (OSTI)

Pulsed Doppler lidars are powerful tools for long-range, high-resolution measurements of radial wind velocities. With the development of commercial Doppler lidars and the reduction of acquisition costs, dual-Doppler lidar systems will be become ...

Christina Stawiarski; Katja Trumner; Christoph Knigge; Ronald Calhoun

2013-09-01T23:59:59.000Z

427

Dual-Doppler Analysis of Winds and Vorticity Budget Terms near a Tornado  

Science Conference Proceedings (OSTI)

Three-dimensional dual-Doppler observations with unprecedented finescale spatial and temporal resolution are used to characterize the vector wind field and vorticity generation terms in and near a weak, short-lived tornado. The beam widths of the ...

Joshua Wurman; Yvette Richardson; Curtis Alexander; Stephen Weygandt; Peng Fei Zhang

2007-06-01T23:59:59.000Z

428

Theoretical analysis of acceleration measurements in a model of an operating wind turbine.  

Science Conference Proceedings (OSTI)

Wind loading from turbulence and gusts can cause damage in horizontal axis wind turbines. These unsteady loads and the resulting damage initiation and propagation are difficult to predict. Unsteady loads enter at the rotor and are transmitted to the drivetrain. The current generation of wind turbine has drivetrain-mounted vibration and bearing temperature sensors, a nacelle-mounted inertial measurement unit, and a nacelle-mounted anemometer and wind vane. Some advanced wind turbines are also equipped with strain measurements at the root of the rotor. This paper analyzes additional measurements in a rotor blade to investigate the complexity of these unsteady loads. By identifying the spatial distribution, amplitude, and frequency bandwidth of these loads, design improvements could be facilitated to reduce uncertainties in reliability predictions. In addition, dynamic load estimates could be used in the future to control high-bandwidth aerodynamic actuators distributed along the rotor blade to reduce the saturation of slower pitch actuators currently used for wind turbine blades. Local acceleration measurements are made along a rotor blade to infer operational rotor states including deflection and dynamic modal contributions. Previous work has demonstrated that acceleration measurements can be experimentally acquired on an operating wind turbine. Simulations on simplified rotor blades have also been used to demonstrate that mean blade loading can be estimated based on deflection estimates. To successfully apply accelerometers in wind turbine applications for load identification, the spectral and spatial characteristics of each excitation source must be understood so that the total acceleration measurement can be decomposed into contributions from each source. To demonstrate the decomposition of acceleration measurements in conjunction with load estimation methods, a flexible body model has been created with MSC.ADAMS{copyright} The benefit of using a simulation model as opposed to a physical experiment to examine the merits of acceleration-based load identification methods is that models of the structural dynamics and aerodynamics enable one to compare estimates of the deflection and loading with actual values. Realistic wind conditions are applied to the wind turbine and used to estimate the operational displacement and acceleration of the rotor. The per-revolution harmonics dominate the displacement and acceleration response. Turbulent wind produces broadband excitation that includes both the harmonics and modal vibrations, such as the tower modes. Power Spectral Density estimates of the acceleration along the span of the rotor blades indicate that the edge modes may be coupled to the second harmonic.

Adams, Douglas E. (Purdue University, Lafayette, IN); Rumsey, Mark Allen; White, Jonathan Randall

2010-04-01T23:59:59.000Z

429

Analysis of the Impact of Balancing Area Cooperation on the Operation of the Western Interconnection with Wind and Solar Generation (Presentation)  

DOE Green Energy (OSTI)

This presentation describes the analysis of the impact of balancing area cooperation on the operation of the Western Interconnection with wind and solar generation, including a discussion of operating reserves, ramping, production simulation, and conclusions.

Milligan, M.; Lew, D.; Jordan, G.; Piwko, R.; Kirby, B.; King, J.; Beuning, S.

2011-05-01T23:59:59.000Z

430

Wind: wind speed and wind power density GIS data at 50m above ground and  

Open Energy Info (EERE)

Ethiopia from RisoeDTU Ethiopia from RisoeDTU Dataset Summary Description (Abstract): These data are results from the KAMM/WASP studies for Ethiopia. The KAMM/WAsP methodology uses a set of wind classes to represent wind conditions for the mapped region. A mesoscale simulation for each wind class, using KAMM (Karlsruhe Mesoscale Model), is performed and statistics performed on the model output. The results are a summary of the simulated wind climate, and ii.a wind atlas, a summary of the wind climate standardized to flat, uniform roughness terrain. (Purpose): The product is intended to be used to estimate the wind resource potential in the country including the spatial variability. This map covers regions where long term measurements are not available. In a sense this is the point of the mapping exercise, but it also means that verification of results has not been as complete would be ideal. There is some concern that the results may underestimate the resource. However, new measurement data is coming and revisions to the map may be made if necessary as verification is carried out.

431

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

DOE Green Energy (OSTI)

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

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

2013-10-01T23:59:59.000Z

432

Analysis of the Use of Wind Energy to Supplement the Power Needs at McMurdo Station and Amundsen-Scott South Pole Station, Antarctica (Poster)  

DOE Green Energy (OSTI)

This poster summarizes the analysis of the inclusion of wind-driven power generation technology into the existing diesel power plants at two U.S. Antarctic research stations, McMurdo and Amundsen-Scott South Pole Station. Staff at the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) conducted the analysis. Available data were obtained on the wind resources, power plant conditions, load, and component cost. We then used NREL's Hybrid2 power system modeling software to analyze the potential and cost of using wind turbine generators at the two aforementioned facilities.

Baring-Gould, E. I.; Robichaud, R.; McLain, K.

2005-05-01T23:59:59.000Z

433

Siting guidelines for utility application of wind turbines. Final report  

DOE Green Energy (OSTI)

Utility-oriented guidelines are described for identifying viable sites for wind turbines. Topics and procedures are also discussed that are important in carrying out a wind turbine siting program. These topics include: a description of the Department of Energy wind resource atlases; procedures for predicting wind turbine performance at potential sites; methods for analyzing wind turbine economics; procedures for estimating installation and maintenance costs; methods for anlayzing the distribution of wind resources over an area; and instrumentation for documenting wind behavior at potential sites. The procedure described is applicable to small and large utilities. Although the procedure was developed as a site-selection tool, it can also be used by a utility who wishes to estimate the potential for wind turbine penetration into its future generation mix.

Pennell, W.T.

1983-01-01T23:59:59.000Z

434

2010 Carbon Sequestration Atlas of the United States and Canada...  

Open Energy Info (EERE)

2010 Carbon Sequestration Atlas of the United States and Canada: Third Edition Jump to: navigation, search Tool Summary LAUNCH TOOL Name: 2010 Carbon Sequestration Atlas of the...

435

Analysis of Unit-Level Changes in Operations with Increased SPP Wind from EPRI/LCG Balancing Study  

DOE Green Energy (OSTI)

Wind power development in the United States is outpacing previous estimates for many regions, particularly those with good wind resources. The pace of wind power deployment may soon outstrip regional capabilities to provide transmission and integration services to achieve the most economic power system operation. Conversely, regions such as the Southeastern United States do not have good wind resources and will have difficulty meeting proposed federal Renewable Portfolio Standards with local supply. There is a growing need to explore innovative solutions for collaborating between regions to achieve the least cost solution for meeting such a renewable energy mandate. The Department of Energy funded the project 'Integrating Midwest Wind Energy into Southeast Electricity Markets' to be led by EPRI in coordination with the main authorities for the regions: SPP, Entergy, TVA, Southern Company and OPC. EPRI utilized several subcontractors for the project including LCG, the developers of the model UPLAN. The study aims to evaluate the operating cost benefits of coordination of scheduling and balancing for Southwest Power Pool (SPP) wind transfers to Southeastern Electric Reliability Council (SERC) Balancing Authorities (BAs). The primary objective of this project is to analyze the benefits of regional cooperation for integrating mid-western wind energy into southeast electricity markets. Scenarios were defined, modeled and investigated to address production variability and uncertainty and the associated balancing of large quantities of wind power in SPP and delivery to energy markets in the southern regions of the SERC. DOE funded Oak Ridge National Laboratory to provide additional support to the project, including a review of results and any side analysis that may provide additional insight. This report is a unit-by-unit analysis of changes in operations due to the different scenarios used in the overall study. It focuses on the change in capacity factors and the number of start-ups required for each unit since those criteria summarize key aspects of plant operations, how often are they called upon and how much do they operate. The primary analysis of the overall project is based on security-constrained unit commitment (SCUC) and economic dispatch (SCED) simulations of the SPP-SERC regions as modeled for the year 2022. The SCUC/SCED models utilized for the project were developed through extensive consultation with the project utility partners, to ensure the various regions and operational practices are represented as best as possible in the model. SPP, Entergy, Oglethorpe Power Company (OPC), Southern Company, and the Tennessee Valley Authority (TVA) actively participated in the project providing input data for the models and review of simulation results and conclusions. While other SERC utility systems are modeled, the listed SERC utilities were explicitly included as active participants in the project due to the size of their load and relative proximity to SPP for importing wind energy.

Hadley, Stanton W [ORNL

2012-01-01T23:59:59.000Z

436

WindLogics Inc | Open Energy Information  

Open Energy Info (EERE)

Product WindLogics provides wind resource analysis and long-period variability forecasting services. References WindLogics Inc1 LinkedIn Connections CrunchBase Profile No...

437

ATLAS Inner Detector Event Data Model  

Science Conference Proceedings (OSTI)

The data model for event reconstruction (EDM) in the Inner Detector of the ATLAS experiment is presented. Different data classes represent evolving stages in the reconstruction data flow, and specific derived classes exist for the sub-detectors. The Inner Detector EDM also extends the data model for common tracking in ATLAS and is integrated into the modular design of the ATLAS high-level trigger and off-line software.

ATLAS; Akesson, F.; Costa, M.J.; Dobos, D.; Elsing, M.; Fleischmann, S.; Gaponenko, A.; Gnanvo, K.; Keener, P.T.; Liebig, W.; Moyse, E.; Salzburger, A.; Siebel, M.; Wildauer, A.

2007-12-12T23:59:59.000Z

438

An Analysis of Wind Power Development in the Town of Hull, MA, Appendix 2: LaCapra Financial Study  

SciTech Connect

The financial analysis and summary results presented in this document represent a first cut at an economic assessment of the proposed Hull Offshore Wind Project. Wind turbine price increases have outpaced the materials and labor price pressures faced by nonrenewable power plant developers due to increased demands on a limited pool of turbine manufacturers and offshore installation companies. Moreover, given the size of the proposed offshore facility, it may be difficult to contract with turbine manufacturers and/or foundation companies given the size and scope of competing worldwide demand. The results described in this report assume that such conditions will not significantly impact the prices that will have to be received from the output of the project; rather, the project size may require as a prerequisite that Hull be able to piggyback on other offshore efforts. The financial estimates provided here necessarily feature a range due to uncertainty in a number of project assumptions as well as overall uncertainty in offshore wind costs. Nevertheless, taken together, the analysis provides a ballpark revenue requirement of approximately $157/MWh for the municipal financing option, with higher estimates possible assuming escalation in costs to levels higher than assumed here.

Adams, Christopher

2013-06-30T23:59:59.000Z

439

Assessing the Impacts of Reduced Noise Operations of Wind Turbines on Neighbor Annoyance: A Preliminary Analysis in Vinalhaven, Maine  

E-Print Network (OSTI)

only self-reported wind and turbine sound levels were used.Noise Operations of Wind Turbines on Neighbor Annoyance: ANoise Operations of Wind Turbines on Neighbor Annoyance: A

Hoen, Ben

2010-01-01T23:59:59.000Z

440

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

E-Print Network (OSTI)

2002) Economic Impacts of Wind Power in Kittitas County, WA.Beck, D. (2004) How Hull Wind "I" Impacted Property Valuesof Visual Impact: The Case of Wind Turbines. Environment and

Hoen, Ben

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "wind atlas analysis" 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

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

E-Print Network (OSTI)

Price Facility Statistics Facility Name Weatherford Wind Energyprices of homes situated inside of one mile of the nearest wind energyprices. For this reason, the hedonic model is wind energy

Hoen, Ben

2010-01-01T23:59:59.000Z

442

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

E-Print Network (OSTI)

for Understanding Public Perceptions of Wind Energy.Wind Energy. 8(2): 125 - 139. Dubin, R. A. (1998) Spatial2008. 60 pages. Global Wind Energy Council (GWEC) (2009)

Hoen, Ben

2010-01-01T23:59:59.000Z

443

Commissioning of the ATLAS Pixel Detector  

E-Print Network (OSTI)

The ATLAS pixel detector is a high precision silicon tracking device located closest to the LHC interaction point. It belongs to the first generation of its kind in a hadron collider experiment. It will provide crucial pattern recognition information and will largely determine the ability of ATLAS to precisely track particle trajectories and find secondary vertices. It was the last detector to be installed in ATLAS in June 2007, has been fully connected and tested in-situ during spring and summer 2008. It is currently in a commissioning phase using cosmic-ray events. We present the highlights of the past and future commissioning activities of the ATLAS pixel system.

J. -F. Arguin; for the ATLAS Pixel Collaboration

2008-10-16T23:59:59.000Z

444

Commissioning of the ATLAS pixel detector  

SciTech Connect

The ATLAS pixel detector is a high precision silicon tracking device located closest to the LHC interaction point. It belongs to the first generation of its kind in a hadron collider experiment. It will provide crucial pattern recognition information and will largely determine the ability of ATLAS to precisely track particle trajectories and find secondary vertices. It was the last detector to be installed in ATLAS in June 2007, has been fully connected and tested in-situ during spring and summer 2008, and is ready for the imminent LHC turn-on. The highlights of the past and future commissioning activities of the ATLAS pixel system are presented.

ATLAS Collaboration; Golling, Tobias

2008-09-01T23:59:59.000Z

445

Microsoft Word - Hoen et al (2013) A Spatial Hedonic Analysis of the Effects of Wind Energy Facilities on Surrounding Property  

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

362E 362E A Spatial Hedonic Analysis of the Effects of Wind Energy Facilities on Surrounding Property Values in the United States Ben Hoen, Jason P. Brown, Thomas Jackson, Ryan Wiser, Mark Thayer and Peter Cappers Environmental Energy Technologies Division August 2013 Download from http://emp.lbl.gov/sites/all/files/lbnl-6362e.pdf This work was supported by the Office of Energy Efficiency and Renewable Energy (Wind and Water Power Technologies Office) of the U.S. Department of Energy under Contract No. DE-AC02-05CH1123. ERNEST ORLANDO LAWRENCE BERKELEY NATIONAL LABORATORY Disclaimer This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States

446

Kalaupapa, Molokai, Hawaii wind-turbine and battery-storage analysis using the SOLSTOR II computer code  

Science Conference Proceedings (OSTI)

The feasibility of a wind-turbine collector and battery-storage system on the island of Molokai, Hawaii, was investigasted using the SOLSTOR II optimizing computer code. Three system configurations were evaluated: utility-connected, stand-alone with generator backup, and stand-alone without generator backup. The utility-connected version considered both sell-back of energy to the utility and no sell-back. Major analysis conclusions are: the wind regime used in the simulation is extremely good, the annualized specific energy costs for all simulation cases are considerably lower than the current utility electric rate, and moderate battery storage capacity is economically attractive on the island of Mokokai.

Murphy, K.D.

1983-01-01T23:59:59.000Z

447

Commonwealth Wind Incentive Program - Micro Wind Initiative...  

Open Energy Info (EERE)

Clean Energy Analysis Low Emission Development Strategies Oil & Gas Smart Grid Solar U.S. OpenLabs Utilities Water Wind Page Actions View form View source History View...

448

Application of measured loads to wind turbine fatigue and reliability analysis  

DOE Green Energy (OSTI)

Cyclic loadings produce progressive damage that can ultimately result in wind turbine structural failure. There are many issues that must be dealt with in turning load measurements into estimates of component fatigue life. This paper deals with how the measured loads can be analyzed and processed to meet the needs of both fatigue life calculations and reliability estimates. It is recommended that moments of the distribution of rainflow-range load amplitudes be calculated and used to characterize the fatigue loading. These moments reflect successively more detailed physical characteristics of the loading (mean, spread, tail behavior). Moments can be calculated from data samples and functional forms can be fitted to wind conditions, such as wind speed and turbulence intensity, with standard recession techniques. Distributions of load amplitudes that accurately reflect the damaging potential of the loadings can be estimated from the moments at any, wind condition of interest. Fatigue life can then be calculated from the estimated load distributions, and the overall, long-term, or design spectrum can be generated for any particular wind-speed distribution. Characterizing the uncertainty in the distribution of cyclic loads is facilitated by using a small set of descriptive statistics for which uncertainties can be estimated. The effects of loading parameter uncertainty can then be transferred to the fatigue life estimate and compared with other uncertainties, such as material durability.

Veers, P.S. [Sandia National Labs., Albuquerque, NM (United States); Winterstein, S.R. [Stanford Univ., CA (United States)

1997-01-01T23:59:59.000Z

449

Wind Power Opportunities in St. Thomas, USVI: A Site-Specific Evaluation and Analysis  

DOE Green Energy (OSTI)

This NREL technical report utilizes a development framework originated by NREL and known by the acronym SROPTTC to assist the U.S. Virgin Islands in identifying and understanding concrete opportunities for wind power development in the territory. The report covers each of the seven components of the SROPTTC framework: Site, Resource, Off-take, Permitting, Technology, Team, and Capital as they apply to wind power in the USVI and specifically to a site in Bovoni, St. Thomas. The report concludes that Bovoni peninsula is a strong candidate for utility-scale wind generation in the territory. It represents a reasonable compromise in terms of wind resource, distance from residences, and developable terrain. Hurricane risk and variable terrain on the peninsula and on potential equipment transport routes add technical and logistical challenges but do not appear to represent insurmountable barriers. In addition, integration of wind power into the St. Thomas power system will present operational challenges, but based on experience in other islanded power systems, there are reasonable solutions for addressing these challenges.

Lantz, E.; Warren, A.; Roberts, J. O.; Gevorgian, V.

2012-09-01T23:59:59.000Z

450

20% Wind Energy by 2030  

DOE Green Energy (OSTI)

This analysis explores one clearly defined scenario for providing 20% of our nations electricity demand with wind energy by 2030 and contrasts it to a scenario of no new wind power capacity.

Not Available

2008-07-01T23:59:59.000Z

451

ATLAS Status and latest results  

E-Print Network (OSTI)

The ATLAS experiment is a general-purpose detector located in one of the four interaction points of the Large Hadron Collider at CERN, Switzerland. In 2010 LHC has been colliding proton beams at the unprecedented centre-of-mass energy of 7 TeV. The last month of operation was dedicated to Pb-ion collisions at centre-of-mass energy of 2.76 TeV per nucleon. In this talk, a survey of the status of the ATLAS detector in both runs will be presented. The main results in pp collisions, including the study of minimum bias events, jets, W/Z, top and first searches for new physics will be reviewed. First results from heavy Ion collisions will be focussed on charged particle multiplicity, transverse energy, and elliptic flow as a function of collision geometry.

Sbarra, C; The ATLAS collaboration

2011-01-01T23:59:59.000Z

452

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

DOE Green Energy (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

453

EERE: Wind  

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

EERE: Buildings The U.S. Department of Energy funds R&D to develop wind energy. Learn about the DOE Wind Program, how to use wind energy and get financial incentives, and access...

454

WIND ENERGY Wind Energ. (2012)  

E-Print Network (OSTI)

WIND ENERGY Wind Energ. (2012) Published online in Wiley Online Library (wileyonlinelibrary since energy production depends non-linearly on wind speed (U ), and wind speed observa- tions for the assessment of future long-term wind supply A. M. R. Bakker1 , B. J. J. M. Van den Hurk1 and J. P. Coelingh2 1

Haak, Hein

455

LIDAR Wind Speed Measurement Analysis and Feed-Forward Blade Pitch Control for Load Mitigation in Wind Turbines: January 2010--January 2011  

SciTech Connect

This report examines the accuracy of measurements that rely on Doppler LIDAR systems to determine their applicability to wind turbine feed-forward control systems and discusses feed-forward control system designs that use preview wind measurements. Light Detection and Ranging (LIDAR) systems are able to measure the speed of incoming wind before it interacts with a wind turbine rotor. These preview wind measurements can be used in feed-forward control systems designed to reduce turbine loads. However, the degree to which such preview-based control techniques can reduce loads by reacting to turbulence depends on how accurately the incoming wind field can be measured. The first half of this report examines the accuracy of different measurement scenarios that rely on coherent continuous-wave or pulsed Doppler LIDAR systems to determine their applicability to feed-forward control. In particular, the impacts of measurement range and angular offset from the wind direction are studied for various wind conditions. A realistic case involving a scanning LIDAR unit mounted in the spinner of a wind turbine is studied in depth with emphasis on choices for scan radius and preview distance. The effects of turbulence parameters on measurement accuracy are studied as well. Continuous-wave and pulsed LIDAR models based on typical commercially available units were used in the studies present in this report. The second half of this report discusses feed-forward control system designs that use preview wind measurements. Combined feedback/feed-forward blade pitch control is compared to industry standard feedback control when simulated in realistic turbulent above-rated winds. The feed-forward controllers are designed to reduce fatigue loads, increasing turbine lifetime and therefore reducing the cost of energy. Three feed-forward designs are studied: non-causal series expansion, Preview Control, and optimized FIR filter. The input to the feed-forward controller is a measurement of incoming wind speeds that could be provided by LIDAR. Non-causal series expansion and Preview Control methods reduce blade root loads but increase tower bending in simulation results. The optimized FIR filter reduces loads overall, keeps pitch rates low, and maintains rotor speed regulation and power capture, while using imperfect wind measurements provided by the spinning continuous-wave LIDAR model.

Dunne, F.; Simley, E.; Pao, L.Y.

2011-10-01T23:59:59.000Z

456

The ATLAS Missing ET trigger  

E-Print Network (OSTI)

Over the last few months, the ATLAS detector collected 900 GeV LHC collision events which allowed for the study the performance of the ATLAS Trigger and Data Acquisition system (TDAQ). With the 7 TeV collision data collected recently, the performance studies of the trigger system are critical for a successful physics program. In particular a large spectrum of physics results will rely on the capacity of the ATLAS TDAQ system to collect events based on the estimate of the missing transverse energy (MET) contained in each event. The MET trigger would be, for example, the primary trigger to be used in new physics searches for processes involving new weakly interacting particles, which could account for the astronomically observed dark matter. In addition to discovery perspectives, the MET trigger can also be used in combination with other triggers to control the rate of signatures involving low energy objects. For example, the MET trigger is necessary in order to measure non-boosted W in the tau channel. Finally...

Beauchemin, P; The ATLAS collaboration

2010-01-01T23:59:59.000Z

457

Monthly Mean Wind Stress and Sverdrup Transports in the North Atlantic: A Comparison of the HellermanRosenstein and IsemerHasse Climatologies  

Science Conference Proceedings (OSTI)

The monthly mean wind stress climatology of Hellerman and Rosenstein (HR) is compared with the climatology of Isemer and Hasse (IH), which represents a version of the Bunker atlas (BU) for the North Atlantic based on revised parameterizations. ...

Claus W. Bning; Ralf Dscher; Hans-Jrg Isemer

1991-02-01T23:59:59.000Z

458

Wind power: executive summary on research on network wind power over the Pacific Northwest. Progress report, October 1979-September 1980  

DOE Green Energy (OSTI)

This research in FY80 is composed of six primary tasks. These tasks include data collection and analysis, wind flow studies around an operational wind turbine generator (WTG), kite anemometer calibration, wind flow analysis and prediction, the Klickitat County small wind energy conversion system (SWECS) program, and network wind power analysis. The data collection and analysis task consists of four sections, three of which deal with wind flow site surveys and the fourth with collecting and analyzing wind data from existing data stations.

Baker, R.W.; Hewson, E.W.

1980-10-01T23:59:59.000Z

459

Wind Energy Facilities and Residential Properties: The Effect of Proximity and View on Sales Prices  

E-Print Network (OSTI)

about Wind Turbines and Wind Farms. Wind Engineering. 13(4):Towards the Development of Wind Farms in Australia. JournalEconomic Analysis of a Wind Farm in Nantucket Sound. Beacon

Hoen, Ben

2010-01-01T23:59:59.000Z

460

Wind: wind speed and wind power density GIS data at 50m above ground and  

Open Energy Info (EERE)

Nepal from RisoeDTU Nepal from RisoeDTU Dataset Summary Description (Abstract): These data are results from the KAMM/WASP studies for Nepal. The KAMM/WAsP methodology uses a set of windclasses to represent wind conditions for the mapped region. A mesoscale simulation for each wind class, using KAMM (Karlsruhe Mesoscale Model), is performed and statistics performed on the model output. The results are a summary of the simulated wind climate, and a wind atlas, a summary of the wind climate standardized to flat, uniform roughness terrain. (Purpose): The product is intended to be used to estimate the wind resource potential in the country including the the spatial variability. This map covers regions where long term measurements are not available. In a sense this is the point of the mapping exercise, but it also means that verification of results has not been as complete would be ideal. There is some concern that the results may underestimate the resource. However, new measurement data is coming and revisions to the map may be made if necessary as verification is carried out.

Note: This page contains sample records for the topic "wind atlas analysis" 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

Analysis and test results for a two-bladed, passive cycle pitch, horizontal-axis wind turbine in free and controlled yaw  

SciTech Connect

This report surveys the analysis and tests performed at Washington University in St. Louis, Missouri, on a horizontal-axis, two-laded wind turbine with teeter hub. The introduction is a brief account of results obtained during the 5-year period ending December 1985. The wind tunnel model and the test turbine (7.6 m [25 ft.] in diameter) at Washington University`s Tyson Research Center had a 67{degree} delta-three angle of the teeter axis. The introduction explains why this configuration was selected and named the passive cycle pitch (PCP) wind turbine. Through the analysis was not limited to the PCP rotor, all tests, including those done from 1986 to 1994, wee conducted with the same teetered wind rotor. The blades are rather stiff and have only a small elastic coning angle and no precone.

Holenemser, K.H. [Washington Univ., St. Louis, MO (United States)

1995-10-01T23:59:59.000Z

462

Analysis and Forecasting of the Low-Level Wind during the Sydney 2000 Forecast Demonstration Project  

Science Conference Proceedings (OSTI)

During the Sydney 2000 Forecast Demonstration Project (FDP) a four-dimensional variational assimilation (4DVAR) scheme was run to analyze the low-level wind field with high spatial and temporal resolution. The 4DVAR scheme finds an optimal fit to ...

N. Andrew Crook; Juanzhen Sun

2004-02-01T23:59:59.000Z

463

Statistical Analysis of Sodium Doppler WindTemperature Lidar Measurements of Vertical Heat Flux  

Science Conference Proceedings (OSTI)

A statistical study is presented of the errors in sodium Doppler lidar measurements of wind and temperature in the mesosphere that arise from the statistics of the photon-counting process that is inherent in the technique. The authors use data ...

Liguo Su; Richard L. Collins; David A. Krueger; Chiao-Yao She

2008-03-01T23:59:59.000Z

464

ENVIRONMENTAL LAW IN BRAZIL- ANALYSIS OF ENVIRONMENTAL LICENSING OF WIND POWER PLANTS IN PERMANENT PRESERVATION AREAS  

E-Print Network (OSTI)

The Brazilian electric energy matrix is mostly renewable. According to the Generation Information Base (BIG) of the Brazilian Electricity Regulatory Agency (ANEEL), hydroelectricity is responsible for 67.31 % of the country's energy. The additional generation comes mostly from fossil fuels, whichs use is questioned when it comes to environmental quality and climate change. Despite its abundance, hydroelectric power generation has physical, socioeconomic and environmental limitations. Thus, it is essential to develop alternative technologies, providing security in the supply of electric energy and the maintenance of a clean matrix. Among the alternative technologies available, wind power is the one that has been gaining prominence, domestically and internationally speaking. In the last auction of renewable sources held in August 2010 in Brazil, the energy produced by the plants of sugarcane bagasse (biomass) was traded at an average of R $ 144.20 MWh; wind energy, which was the cheapest, was traded at R $ 130.86, and the energy from small hydropower plants (PCH), at R $ 141.93 MWh. The wind power plants accounted for 70 % of the auction, which resulted in a plan for increasing its installed capacity by fivefold, by the year 2013. Brazil has great potential to be explored (estimated 143,000 MW), yet despite being appealing, wind energy still

Cristiano Abijaode Amaral; Adriana Coli Pedreira

2010-01-01T23:59:59.000Z

465

Short-term wind power forecast based on cluster analysis and artificial neural networks  

Science Conference Proceedings (OSTI)

In this paper an architecture for an estimator of short-term wind farm power is proposed. The estimator is made up of a Linear Machine classifier and a set of k Multilayer Perceptrons, training each one for a specific subspace of the input space. ...

Javier Lorenzo; Juan Mndez; Modesto Castrilln; Daniel Hernndez

2011-06-01T23:59:59.000Z

466

Simple Adjoint Methods for Single-Doppler Wind Analysis with a Strong Constraint of Mass Conservation  

Science Conference Proceedings (OSTI)

Three schemes are developed to incorporate a strong constraint of (incompressible) mass conservation into the basic scheme (scheme B) of the simple adjoint method of Qiu and Xu for retrieving the time-mean wind field from a sequence of single-...

Qin Xu; Chong-Jian Qiu

1994-04-01T23:59:59.000Z

467

Diffraction and central exclusive production at ATLAS  

Science Conference Proceedings (OSTI)

The diffractive physics program for the ATLAS experiment with an emphasis on the central exclusive production is discussed. The key point in this discussion is the need for an unambiguous experimental definition of diffractive signature which would be acceptable and reproducible by theorists. Recent ATLAS results from samples enhanced in diffraction contribution underline this need.

Marek Taevsk; The ATLAS collaboration

2011-01-01T23:59:59.000Z

468

The New England solar energy atlas  

SciTech Connect

This book offers a convenient source of historical solar radiation data excerpted from the Solar Radiation Energy Resource Atlas of the United States. The collection of regional maps and the graphic summaries of the resource data pertinent to the New England area accomplish the author's goal of providing design data in a more compact format than that of the national atlas.

Cook, D.L.

1986-01-01T23:59:59.000Z

469

NREL North American Solar Radiation Atlas (Presentation)  

DOE Green Energy (OSTI)

This presentation is about NREL's North American Solar Radiation Atlas, which currently includes 48 states (Alaska and Hawaii to be added in the future). It discusses the goals of the Atlas which are to: deliver basic solar performance estimates to general users, deliver a wide variety of additional information to more advanced users, be easy to use, full featured, and extensible.

George, R; Gray-Hann, P.

2001-04-01T23:59:59.000Z

470

Analysis of SNL/MSU/DOE fatigue database trends for wind turbine blade materials.  

DOE Green Energy (OSTI)

This report presents an analysis of trends in fatigue results from the Montana State University program on the fatigue of composite materials for wind turbine blades for the period 2005-2009. Test data can be found in the SNL/MSU/DOE Fatigue of Composite Materials Database which is updated annually. This is the fifth report in this series, which summarizes progress of the overall program since its inception in 1989. The primary thrust of this program has been research and testing of a broad range of structural laminate materials of interest to blade structures. The report is focused on current types of infused and prepreg blade materials, either processed in-house or by industry partners. Trends in static and fatigue performance are analyzed for a range of materials, geometries and loading conditions. Materials include: sixteen resins of three general types, five epoxy based paste adhesives, fifteen reinforcing fabrics including three fiber types, three prepregs, many laminate lay-ups and process variations. Significant differences in static and fatigue performance and delamination resistance are quantified for particular materials and process conditions. When blades do fail, the likely cause is fatigue in the structural detail areas or at major flaws. The program is focused strongly on these issues in addition to standard laminates. Structural detail tests allow evaluation of various blade materials options in the context of more realistic representations of blade structure than do the standard test methods. Types of structural details addressed in this report include ply drops used in thickness tapering, and adhesive joints, each tested over a range of fatigue loading conditions. Ply drop studies were in two areas: (1) a combined experimental and finite element study of basic ply drop delamination parameters for glass and carbon prepreg laminates, and (2) the development of a complex structured resin-infused coupon including ply drops, for comparison studies of various resins, fabrics and pry drop thicknesses. Adhesive joint tests using typical blade adhesives included both generic testing of materials parameters using a notched-lap-shear test geometry developed in this study, and also a series of simulated blade web joint geometries fabricated by an industry partner.

Mandell, John F. (Montana State University, Bozeman, MT); Ashwill, Thomas D.; Wilson, Timothy J. (Montana State University, Bozeman, MT); Sears, Aaron T. (Montana State University, Bozeman, MT); Agastra, Pancasatya (Montana State University, Bozeman, MT); Laird, Daniel L.; Samborsky, Daniel D. (Montana State University, Bozeman, MT)

2010-12-01T23:59:59.000Z

471

Biofuels Atlas (United States) | Open Energy Information  

Open Energy Info (EERE)

Biofuels Atlas (United States) Biofuels Atlas (United States) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Biofuels Atlas (United States) Focus Area: Clean Transportation Topics: Potentials & Scenarios Website: maps.nrel.gov/biomass Equivalent URI: cleanenergysolutions.org/content/biofuels-atlas-united-states,http://c Language: English Policies: Deployment Programs DeploymentPrograms: Technical Assistance Biofuels Atlas is an interactive map that allows users to compare biomass feedstocks and biofuels by location. Users may select from and apply biomass data layers to a map as well as query and download biofuels and feedstock data. The state zoom function summarizes state energy use and infrastructure for traditional and bioenergy power, fuels, and resources. The tool also calculates the biofuels potential for a given area.

472

Lower Sioux Wind Feasibility & Development  

SciTech Connect

This report describes the process and findings of a Wind Energy Feasibility Study (Study) conducted by the Lower Sioux Indian Community (Community). The Community is evaluating the development of a wind energy project located on tribal land. The project scope was to analyze the critical issues in determining advantages and disadvantages of wind development within the Community. This analysis addresses both of the Community's wind energy development objectives: the single turbine project and the Commerical-scale multiple turbine project. The main tasks of the feasibility study are: land use and contraint analysis; wind resource evaluation; utility interconnection analysis; and project structure and economics.

Minkel, Darin

2012-04-01T23:59:59.000Z

473

ATLAS reach for Quarkonium cross section and polarization measurement  

E-Print Network (OSTI)

The ATLAS detector at CERN's LHC is preparing to take data from the first proton-proton collisions expected in the next few months. We report on the analysis of simulated data samples for production of heavy Quarkonium states J/psi and Upsilon, corresponding to an integrated luminosity of 10 pb^-1 with center of mass energy of 14 TeV expected at the early ATLAS data. We review various aspects of prompt Quarkonium production at LHC: the accessible ranges in transverse momentum and pseudorapidity, spin alignment of vector states, separation of color octet and color singlet production mechanism and feasibility of observing radiative decays Xi_c and Xi_b decays. Strategies of various measurements are outlined and methods of separating promptly produced J/psi and Upsilon mesons from various backgrounds are discussed.

Etzion, Erez

2009-01-01T23:59:59.000Z

474

Quarkonium production and polarization with early data at ATLAS  

E-Print Network (OSTI)

The ATLAS detector at CERN's LHC is preparing to take data from the first proton-proton collisions expected in the next few months. We report on the analysis of simulated data samples for production of heavy Quarqonium states J/?->μμ and Υ->μμ, corresponding to an integrated luminosity of 10 pb-1 with center of mass energy of 14 TeV expected at the early ATLAS data. The report will review various aspects of prompt Quarqonium production at LHC: the accessible ranges in transverse momentum and pseudorapidity, spin alignment of vector states, separation of color octet and color singlet production mechanism and feasibility of observing radiative decays of ? c and ? b decays. Strategies of various measurements are outlined and methods of separating promptly produced J/? and Υ mesons from various backgrounds are discussed.

Etzion, Erez

2008-01-01T23:59:59.000Z

475

ATLAS reach for Quarkonium production and polarization measurements  

E-Print Network (OSTI)

The ATLAS detector at CERN's LHC is preparing to take data from the first proton-proton collisions expected in the next few months. We report on the analysis of simulated data samples for production of heavy Quarkonium states J/psi and Upsilon, corresponding to an integrated luminosity of 10 pb^-1 with center of mass energy of 14 TeV expected at the early ATLAS data. We review various aspects of prompt Quarkonium production at LHC: the accessible ranges in transverse momentum and pseudorapidity, spin alignment of vector states, separation of color octet and color singlet production mechanism and feasibility of observing radiative decays Xi_c and Xi_b decays. Strategies of various measurements are outlined and methods of separating promptly produced J/psi and Upsilon mesons from various backgrounds are discussed.

Etzion, Erez; 8th International Conference on Hyperons, Charm and Beauty Hadrons

2009-01-01T23:59:59.000Z

476

The ATLAS PanDA Pilot in Operation  

E-Print Network (OSTI)

The Production and Distributed Analysis system (PanDA) [1-2] was designed to meet ATLAS [3] requirements for a data-driven workload management system capable of operating at LHC data processing scale. Submitted jobs are executed on worker nodes by pilot jobs sent to the grid sites by pilot factories. This paper provides an overview of the PanDA pilot [4] system and presents major features added in light of recent operational experience, including multi-job processing, advanced job recovery for jobs with output storage failures, gLExec [5-6] based identity switching from the generic pilot to the actual user, and other security measures. The PanDA system serves all ATLAS distributed processing and is the primary system for distributed analysis; it is currently used at over 100 sites world-wide. We analyze the performance of the pilot system in processing real LHC data on the OSG [7], EGI [8] and Nordugrid [9-10] infrastructures used by ATLAS, and describe plans for its evolution.

Nilsson, P; The ATLAS collaboration; De, K; Maeno, T; Stradling, A; Wenaus, T

2011-01-01T23:59:59.000Z

477

Analysis of State-Level Economic Impacts from the Development of Wind Power Plants in Summit County, Utah  

Wind Powering America (EERE)

An Analysis of State-Level Economic Impacts from the An Analysis of State-Level Economic Impacts from the Development of Wind Power Plants in Summit County, Utah David J. Ratliff, Captain United States Air Force Cathy L. Hartman, Ph.D. Edwin R. Stafford, Ph.D. Center for the Market Diffusion of Renewable Energy and Clean Technology Jon M. Huntsman School of Business Utah State University 3560 Old Main Hill Logan, Utah 84322-3560 DOE/GO-102009-2918 October 2009 The views expressed in this article are those of the author and do not reflect the official policy or position of the United States Air Force, Department of Defense, or the U.S. Government. The authors thank Marshall Goldberg and Elise Brown for assistance with data collection and analysis and Sandra Reategui and Sara Baldwin for the helpful comments on an earlier draft of

478

Analysis of State-Level Economic Impacts from the Development of Wind Power Plants in San Juan County, Utah  

Wind Powering America (EERE)

An Analysis of State-Level Economic Impacts from the Development An Analysis of State-Level Economic Impacts from the Development of Wind Power Plants in San Juan County, Utah David J. Ratliff, Captain United States Air Force Cathy L. Hartman, Ph.D. Edwin R. Stafford, Ph.D. Center for the Market Diffusion of Renewable Energy and Clean Technology Jon M. Huntsman School of Business Utah State University 3560 Old Main Hill Logan, Utah 84322-3560 DOE/GO-102010-3005 March 2010 The views expressed in this article are those of the author and do not reflect the official policy or position of the United States Air Force, Department of Defense, or the U.S. Government. The authors thank Marshall Goldberg and Elise Brown for assistance with data collection and analysis and Sandra Reategui, Suzanne Tegen, and Sara Baldwin for the helpful comments on

479

CFD analysis of rotating two-bladed flatback wind turbine rotor.  

DOE Green Energy (OSTI)

The effects of modifying the inboard portion of the NREL Phase VI rotor using a thickened, flatback version of the S809 design airfoil are studied using a three-dimensional Reynolds-averaged Navier-Stokes method. A motivation for using such a thicker airfoil design coupled with a blunt trailing edge is to alleviate structural constraints while reducing blade weight and maintaining the power performance of the rotor. The calculated results for the baseline Phase VI rotor are benchmarked against wind tunnel results obtained at 10, 7, and 5 meters per second. The calculated results for the modified rotor are compared against those of the baseline rotor. The results of this study demonstrate that a thick, flatback blade profile is viable as a bridge to connect structural requirements with aerodynamic performance in designing future wind turbine rotors.

van Dam, C.P. (University of California, David, CA); Chao, David D.; Berg, Dale E. (University of California, David, CA)

2008-04-01T23:59:59.000Z

480

Dynamic Analysis of Wind Turbine Planetary Gears Using an Extended Harmonic Balance Approach: Preprint  

DOE Green Energy (OSTI)

The dynamics of wind turbine planetary gears with gravity effects are investigated using an extended harmonic balance method that extends established harmonic balance formulations to include simultaneous internal and external excitations. The extended harmonic balance method with arc-length continuation and Floquet theory is applied to a lumped-parameter planetary gear model including gravity, fluctuating mesh stiffness, bearing clearance, and nonlinear tooth contact to obtain the planetary gear dynamic response. The calculated responses compare well with time domain integrated mathematical models and experimental results. Gravity is a fundamental vibration source in wind turbine planetary gears and plays an important role in system dynamics, causing hardening effects induced by tooth wedging and bearing-raceway contacts. Bearing clearance significantly reduces the lowest resonant frequencies of translational modes. Gravity and bearing clearance together lowers the speed at which tooth wedging occurs lower than the resonant frequency.

Guo, Y.; Keller, J.; Parker, R. G.

2012-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "wind atlas analysis" 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.


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