To address the risk of overspeed and disconnection in traditional high voltage ride through control strategies for permanent magnet wind turbines,a high voltage ride through control strategy based on pitch angle control was proposed.During the high voltage ride through period,firstly,the reactive power support was provided to the grid according to grid connection requirements;secondly,considering the limitation of rotor speed,when the rotor speed reached the reference value,the pitch angle control was started up to suppress the increase of rotor speed;finally,the effectiveness of the proposed control strategy was verified through simulation experiments.Adopting a high voltage ride through control strategy based on pitch angle control for permanent magnet wind turbines,it can not only provide reactive power support to the power grid,but also avoid overspeed disconnection.
关键词
永磁风电机组/高电压穿越/转速越限/桨距角控制/无功支撑
Key words
permanent magnet synchronous generator/high voltage ride through/rotor speed over limit/pitch angle control/reactive power support to the grid
维普
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