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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    Abstract

    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
    Volume854
    Publication date2017
    Article number012020
    DOIs
    Publication statusPublished - 2017
    EventWake Conference 2017 - Visby, Sweden
    Duration: 30 May 20171 Jun 2017
    http://standupforwind.se/wake-conference-2017/

    Conference

    ConferenceWake Conference 2017
    Country/TerritorySweden
    CityVisby
    Period30/05/201701/06/2017
    Internet address
    SeriesJournal of Physics: Conference Series
    ISSN1742-6596

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