交流高压电动机的保护配置方案与整定计算方法探讨

论述了交流高压电动机的电气故障和异常运行方式 ,分析了电流纵差、复合电压闭锁过电流、反时限过负荷等几种主要的电动机保护继电器的原理特点、使用条件和整定计算方法 ,介绍了实际工程中的处理方法 ,推荐了更为实用的交流高压电动机保护配置方案。

We presented in this paper methods of HV AC motors,electrical faults and abnormal operational conditions for HV AC motors.The principle feature,applied conditions and setting calculation methods of the current differential relay,over current relay with compound-voltage blocking and IDMT overload protection are analised.In addition we introduced the solvement in pratice.The ideal protective arrangement scheme is also suggested.