强弱系统联络线短路电流换路产生直流分量问题分析

Analysis on the DC Component caused by Path Change of the Short-circuit Current in the Link Line between Strong and Weak System

基于PSASP和EMTPE仿真软件,分析750 kV变电站A-变电站B输电线路发生单相永久接地后两侧开关重合闸时间不一致导致的短路电流直流分量问题,提出了解决方案。

By means of PSASP and EMTPE software,the DC component of the short-circuit current result by the disaccord reclosing timing of the switchs at the both sides of the line B after single phase permanent grounding of the line B in the 750 kv substation A is simulated and analyzed,and solutions are also put forward in this paper.