电力系统保护与控制2017，Vol.45Issue(4)：33-39,7.DOI:10.7667/PSPC160361
定子Crowbar电路模式切换的双馈风力发电机组低电压穿越控制策略
Control strategy of low voltage ride-through for double-fed wind generator with the stator Crowbar circuit mode switch
周士琼 1王倩 1吕潇 1倪亚玲 2徐明雨1
作者信息
- 1. 西南交通大学电气工程学院,四川成都610031
- 2. 电子科技大学机械电子工程学院,四川成都611731
- 折叠
摘要
Abstract
Rotor low-voltage ride through of doubly-fed wind turbine with Crowbar circuit needs to lock the converter control pulses,and DC bus voltage fluctuations can not be effectively reduced.Against the above,this paper proposes a control strategy of doubly-fed wind turbine low-voltage ride through with stator Crowbar circuit mode switching.When the power grid fails,the stator Crowbar circuit is connected to system,double-fed wind turbine is switched to induction generators mode,the rotor-side converter adopts rotor power outer-loop control,grid-side converter uses power coordinated control scheme,the generator side power is taken as feedforward quantity to be introduced grid-side converter control strategy and reactive power is injected into power grid.The simulation shows that the proposed control scheme can ensure the realization of low-voltage ride through of double-fed wind turbine generator,at the same time it can reduce rotor transient current,stabilize DC bus voltage and provide reactive power to the grid.关键词
双馈风电机组/定子Crowbar/模式切换/无功支撑/低电压穿越Key words
double-fed wind generator/stator Crowbar/mode switching/reactive power support/low voltage ride-through引用本文复制引用
周士琼,王倩,吕潇,倪亚玲,徐明雨..定子Crowbar电路模式切换的双馈风力发电机组低电压穿越控制策略[J].电力系统保护与控制,2017,45(4):33-39,7.
