电网变化对零序电流影响定性分析

Qualitative analysis zero sequence overcurrent affected by change network component

分别讨论了电力系统主要元件如发电机,变压器,线路的投、停对零序电流的影响并给出普遍适用的结论。通过对三序网络的分析,使我们加深了对零序电流实质的理解,对故障时产生的零序电流和零序电压有了更加清楚的认识。在继电保护整定计算和运行管理中做到概念清晰,心中有数,少走弯路,主动而不是被动地适应不断变化的电网要求。

This paper respectively discuss power system major component such as generator、transformer、line cut or not influence zero sequence overcurrent and get out general conclusion.Through analysis three sequence network,we are best understand the substance of zero sequence current and zero sequence voltage.In Relay Protection setting calculate and function manege,it is very helpful.