Modeling large offshore wind farms under different atmospheric stability regimes with the Park wake model

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Abstract

Here, we evaluate a modified version of the Park wake model against power data from a west-east row in the middle of the Horns Rev I offshore wind farm. The evaluation is performed on data classified in four different atmospheric stability conditions, for a narrow wind speed range, and a wide range of westerly wind directions observed at the wind farm. Simulations (post-processed to partly account for the wind direction uncertainty) and observations show good agreement for all stability classes, being the simulations using a stability-dependent wake decay coefficient closer to the data for the last turbines and those using the WAsP recommended value closer to the data for the first turbines. It is generally seen that under stable and unstable atmospheric conditions the power deficits are the highest and lowest, respectively, but the wind conditions under both stability regimes are different. The simulations do not approach the limits of the infinite wind farm under any stability condition as winds are not parallel to the row.
Original languageEnglish
Title of host publicationProceedings of the 2013 International Conference on aerodynamics of Offshore Wind Energy Systems and wakes (ICOWES2013)
EditorsWenZhong Shen
Number of pages11
PublisherTechnical University of Denmark
Publication date2013
Publication statusPublished - 2013
EventInternational Conference on aerodynamics of Offshore Wind Energy Systems and wakes (ICOWES 2013) - Lyngby, Denmark
Duration: 17 Jun 201319 Jun 2013

Conference

ConferenceInternational Conference on aerodynamics of Offshore Wind Energy Systems and wakes (ICOWES 2013)
CountryDenmark
CityLyngby
Period17/06/201319/06/2013

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