摘要
针对宁夏电网发生的一起罕见的因短路电流换路产生直流分量导致开关分闸失败的事故案例,对目前电网继电保护配置和重合闸方式进行深入分析,提出了调整线路重合闸方式的解决方案,并在宁夏电网中进行应用。应用结果表明:该方法有效解决了因短路电流换路产生的直流分量问题。
A rare accident happened in Ningxia power grid due to the failure of the switching ofDC component caused by short-circuit current switching,combined with the current configuration of relay protection and reclosing mode,puts forward solutions through adjusting reclosing mode,and application in Ningxia power system,the results show that this method can effectively solve the DC component problems caused by short circuit current change.
作者
吴建云
Wu Jian yun(Dispatching & Control Center of State Grid Ningxia Power Co., Yinchuan Ningxia 750001, China)
出处
《宁夏电力》
2017年第5期55-59,63,共6页
Ningxia Electric Power
关键词
短路电流
直流分量
分闸失败
重合闸
short-circuit current
DC component
Gate failure
Reclosing
