发电机定子绕组的匝间保护分析

Research on Generator Stator Winding Inter-turn Protection

以某水电站发电机定子绕组匝间击穿故障为例,分析了发电机的差动拒动问题。综述了发电机定子绕组匝间短路的横差保护方法、不完全纵差保护方法、二次谐波保护方法、零序电压保护方法的原理和适用性。

The inter-turn breakdown failure of a hydropower station generator stator winding was taken as an example for analyzing the generator differential refusal movement problem. The principles and applicability of transverse differential protection method, incomplete longitudinal differential protection method, secondary harmonic protection method and zero- sequence voltage protection method of inter-turn short circuit of generator stator winding were described.