Evaluation of two mesoscale wind farm parametrisations with offshore tall masts

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Abstract

We use offshore tall mast measurements in the North and Baltic Sea to evaluate wind farm parametrisations in the Weather Research and Forecasting (WRF) model. We identify periods before and after the construction of neighbouring wind farms around the tall mast for evaluation purposes. We test multiple WRF model set-ups for the pre-construction period to obtain the best configuration representing the region’s wind climate. Our best set-up is then used with the wind farm parametrisations to investigate wind farm wake effects in the post-construction phase. We use two wind farm parametrisation schemes implemented in the WRF model: the Fitch scheme and the Explicit Wake Parametrisation. We select and prioritise cases of low variability in wind speed and direction to isolate the wake effects. Our results indicate an improvement in the wind speed, as a function of height, using both schemes, with the Fitch scheme creating deeper wakes than EWP. Both parametrisations perform well in cases when the mast is aligned far-downwind of the turbines, with mean wind speed differences of less than 0.2 ms−1. In near-wind cases, the performance of the scheme varies with the site. Finally, our research provides a possible baseline for testing the improvements in the wind farms parametrisations schemes in these offshore regions.
Original languageEnglish
Title of host publicationWind and Wind Farms; Measurement and Testing
Number of pages11
PublisherIOP Publishing
Publication date2022
Article number022038
DOIs
Publication statusPublished - 2022
EventThe Science of Making Torque from Wind 2022 - Delft, Netherlands
Duration: 1 Jun 20223 Jun 2022
Conference number: 9
https://www.torque2022.eu/

Conference

ConferenceThe Science of Making Torque from Wind 2022
Number9
Country/TerritoryNetherlands
CityDelft
Period01/06/202203/06/2022
Internet address
SeriesJournal of Physics: Conference Series
Number2
Volume2265
ISSN1742-6596

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