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什么叫发电机的零序过压保护
更新时间: 2020-10-12 00:00:00  

零序电压保护指在大电流接地系统发生接地故障后,利用零序电压构成保护接地短路的继电保护装置。正常情况UA+UB+UC的向量和为0,当系统发生单相接地后,UA+UB+UC的向量和不再为0,这个不为0的值变是零序电压,通过检测该电压能够反映系统是否发生单相接地故障,这就是零序过电压保护。

关键词: 什么 发电机 保护

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