On wind turbine down-regulation control strategies and rotor speed set-point

Wai Hou Lio*, Mahmood Mirzaei, Gunner Chr. Larsen

*Corresponding author for this work

Research output: Contribution to journalConference articleResearchpeer-review

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The use of down-regulation or curtailment control strategies for wind turbines offers means of supporting the stability of the power grid and also improving the efficiency of a wind farm. Typically, wind turbine derating is performed by modifying the power set-point and subsequently, the turbine control input, namely generator torque and blade pitch, are acted on to such changes in the power reference. Nonetheless, in addition to changes in the power reference, derating can be also performed by modifying the rotor speed set-point. Thus, in this work, we investigate the performance of derating strategies with different rotor speed set-point, and in particular, their effect on the turbine structural fatigue and thrust coefficient were evaluated. The numerical results obtained from the high-fidelity turbine simulations showed that compared to the typical derating strategy, the derated turbines might perform better with lower rotor speed set-point but it is crucial to ensure such a set-point does not drive the turbine into stalled operations.
Original languageEnglish
Article number032040
Book seriesJournal of Physics: Conference Series
Issue number3
Number of pages10
Publication statusPublished - 2018
EventThe Science of Making Torque from Wind 2018 - Politecnico di Milano (POLIMI), Milan, Italy
Duration: 20 Jun 201822 Jun 2018
Conference number: 7


ConferenceThe Science of Making Torque from Wind 2018
LocationPolitecnico di Milano (POLIMI)
Internet address

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