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双馈风力发电系统在电网三相短路故障下的响应与保护

Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control(2010)

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Abstract
为了研究双馈感应风力发电机组的低电压穿越以及故障保护技术,根据双馈风力发电系统的数学模型采用数学解析的方法详细地分析了双馈感应发电机和变换器在三相电网短路故障时的动态响应特性;推导出了三相电网短路故障时双馈发电机的故障电流最大值及其发生时刻;并在此基础上,研究了双馈风力发电机的转子保护电路的具体设计方法及计算依据。
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Key words
DFIG,Low voltage ride through,Rotor protection,Three-phase short circuit,Wind power
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