无人值守电站一起线路事故跳闸的分析和处理

Analysis and processing of a line trip fault in an unmanned substation

介绍了某水电站220kV线路发生单相接地故障而线路保护重合闸拒动的经过,从重合闸原理和回路上详细分析了事故发生的原因,并对重合闸回路提出了实用的修改方案。对进一步完善水电站的设备运行有一定借鉴作用。

This paper introduces a line protection reclosure misstrip resulted from 220 kV single-phase line grounded fault in Suofengying Hydropower station. The reasons are analyzed from reclosure principle and its operation circuit.The modification scheme of reclosure circuit is proposed.It is a reference to improve hydropower equipment operation.