Optimization of Wind Turbine Pitch Strategy With Pitch Bearing Life Extension as Objective

Yu WANG; Shuang HAN; Qile WANG; Yongqian LIU

doi:10.16513/j.2096-2185.DE.2106025

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Distributed Energy ›› 2021, Vol. 6 ›› Issue (2) : 32-39. DOI: 10.16513/j.2096-2185.DE.2106025

Basic Research

Optimization of Wind Turbine Pitch Strategy With Pitch Bearing Life Extension as Objective

Yu WANG ¹^,² ,
Shuang HAN ¹^,² ,
Qile WANG ³ ,
Yongqian LIU ¹^,²

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Abstract

The traditional variable speed variable pitch wind turbine adopts the optimal pitch angle pitch strategy of proportional integral differential (PID) control. The pitch is frequent, and the pitch bearing is easy to damage and difficult to repair. Therefore, this paper proposes an optimization strategy of pitch system to reduce the pitch action and prolong the life of the pitch bearing. Based on the optimal pitch angle strategy, the threshold index of wind speed fluctuation is proposed to establish the optimization model. Finally, taking the threshold index of wind speed fluctuation as the input condition, the optimization model is solved based on sparrow search algorithm. The proposed optimization model is applied to a wind farm, and the results show that compared with the traditional model, the life of pitch bearing is increased, the overall income is improved, and it is practical.

Key words

wind turbine / pitch bearing / pitch optimize / sparrow search algorithm

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Yu WANG , Shuang HAN , Qile WANG , et al. Optimization of Wind Turbine Pitch Strategy With Pitch Bearing Life Extension as Objective[J]. Distributed Energy Resources. 2021, 6(2): 32-39 https://doi.org/10.16513/j.2096-2185.DE.2106025

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