Kommerciel arbejde med WAsP

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1 Downloaded from orbit.dtu.dk on: Dec 19, 2017 Kommerciel arbejde med WAsP Mortensen, Niels Gylling Publication date: 2002 Document Version Peer reviewed version Link back to DTU Orbit Citation (APA): Mortensen, N. G. (2002). Kommerciel arbejde med WAsP. Abstract from 23rd Nordic Meteorologists' meeting, Copenhagen, Denmark. General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. Users may download and print one copy of any publication from the public portal for the purpose of private study or research. You may not further distribute the material or use it for any profit-making activity or commercial gain You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.

2 Commercial (Wind Power) Meteorology Niels G. Mortensen Wind Energy Department Risø National Laboratory Roskilde, Denmark 23. Nordiske Meteorologmøde May 2002, Denmark

3 Introduction and outline Commercial (wind power) meteorology an introduction focus on Risø s Wind Power Meteorology Program focus on commercial and semi-commercial projects for information about other activities, please visit or Outline Wind power development Size and type of projects Second Opinion example Wind farm project example Wind atlas project example Concluding remarks

4 Wind power development Denmark MW sold (> 8 AV) 13 billion DKK turnover jobs in industry Danish market share ~ 50% world-wide penetration ~ 15% in DK wind turbine now ~ 2MW produces about 100 times as much energy/turbine Risø 2002 More than 125 persons in Wind Energy Department 15 in Wind Power Met.

5 Size and type of typical commercial projects Small-size projects (~10 5 DKK) Second Opinion / Due Diligence studies Met. input to Feasibility Studies General consultancy services WAsP course or training Medium-size projects (~10 6 DKK) Wind measurement program (on- and offshore) Software development and distribution Wind atlas and wind resource mapping Wind farm projects Large-size projects (~10 7 DKK) Regional and national wind atlas studies Global wind atlas studies

6 Power production basics Wind speed distribution total wind speed distribution wind direction distribution (rose) sector-wise wind speed distributions represented by Weibull parameters Wind turbine power curve production as function of wind speed cut-in and cut-out speeds rated power Annual Energy Production (AEP) production integrated to 1 mean year

7 Small: Second Opinion study Activities Site inspection Map analysis and QA Wind data analysis and QA Wind climate modeling Wind farm modeling Wind index correlation Output report and data Long-term wind climate Wind farm production Wind farm losses Uncertainty analysis Northing [m] Easting [m]

8 Large: Wind Atlas for Egypt Wind Atlas for the Gulf of Suez 13 Risø met. stations WAsP modeling Meso-scale modeling Satellite imagery Env. impact assessment Wind Atlas for Egypt 20 Risø met. stations 25 EMA met. stations WAsP modeling Meso-scale modeling Satellite imagery to map the wind resource over 1 million square kilometers...

9 Medium: Wind Farm project in Cape Verde Islands Wind measurement program (four 30-m masts) design and specification of met. equipment procurement, supply, installation and operation Wind resource assessment (5 sites on 3 islands) topographical data for flow modeling wind statistics and flow modeling (WAsP) Flow separation and turbulence Terrain modeling and WAsP Engineering Interim report as input to tendering Design wind conditions for tender documents Final wind resource assessment report Verification of long-term wind resource predictions Meteorological and topographical databases

10 Wind measurement program

11 Observed wind climate Observed wind climate: Wind rose Sector-wise wind speed distributions Also observations of: Turbulence intensity Gust and lull data Other information: Latitude, longitude of anemometer site Anemometer height Measurement period

12 Wind farm site: terrain description Northing [m] Terrain descriptions: Terrain elevation Terrain roughness Sheltering obstacles Other information: Mast coordinates Wind farm layout: WTG coordinates Easting [m]

13 Wind farm site: terrain analyses Northing [m] Terrain analyses: Elevation Max. slope Ruggedness (RIX) Easting [m]

14 Wind farm site: flow modeling (WAsP)

15 Wind farm site: flow modeling (WAsP Engineering)

16 Wind farm site: wind resource estimates Northing [m] Easting [m] Wind resource map: Annual Energy Production for WTG Wind farm results: AEP for each WTG Wind farm losses AEP for wind farm Turbulence intensity Extreme winds Design wind conditions Uncertainties...

17 Concluding remarks Background to successful commercial activity is strong R&D model development supported by theoretical knowledge and measurement programs and experiments Risø s expertise is recognized worldwide typically called to problem solve or for resource assessment at difficult sites in complex terrain and/or offshore Relating one-years-worth of measurements to the long-term wind climate is crucial for economic success of wind projects Data and information are needed from the Met. Services: Reliable wind index information for long periods of time Surface and upper-air wind statistics in standard formats Wind atlas analysis of selected stations Siting considerations for new met. Stations?

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