Detecting wind turbine wakes with nacelle lidars: Paper

D. P. Held, A. Larvol, Jakob Mann

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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Because the horizontal homogeneity assumption is violated in wakes flows, lidars face difficulties when reconstructing wind fields. Further, small-scale turbulence which is prevalent in wake flows causes Doppler spectrum widths to be broader than in the free stream. In this study the Doppler peak variance is used as a detection parameter for wakes. A one month long measurement campaign, where a continuous-wave lidar on a turbine has been exposed to multiple wake situations, is used to test the detection capabilities. The results show that it is possible to identify situation where a downstream turbine is in wake by comparing the peak widths. The used lidar is inexpensive and brings instalments on every turbine within economical reach. Thus, the information gathered by the lidars can be used for improved control at wind farm level.
Original languageEnglish
Title of host publicationWake Conference 2017
Number of pages5
Publication date2017
Article number012020
Publication statusPublished - 2017
EventWake Conference 2017 - Visby, Sweden
Duration: 30 May 20171 Jun 2017


ConferenceWake Conference 2017
Internet address
SeriesJournal of Physics: Conference Series

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