摘要
2011年超高压输电公司南宁局发生了1起500 kV线路两相导线接地短路故障。通过对故障情况下导线和架空地线雷击情况进行分析,找到造成两相导线接地故障的主要原因是由于两相导线遭受多重雷击,雷击情况下两相绝缘子串同时闪络引起接地短路。提出了防止此类事故发生的措施和建议。
A two phase short circuit and ground fault of 500 kV transmission line happened in Nanning Bureau of EHV Power Transmission Company in 2011. By analyzing the lightning strike on conductors and overhead ground wires,reasons were found which is that the two phase conductors were struck by multiple lightning and the flashover of insulator strings of the two phase conductors caused the ground short circuit fault. Measures and suggestions on how to prevent such accidents are proposed.
出处
《广西电力》
2012年第2期66-68,共3页
Guangxi Electric Power
关键词
线路
多重雷击
防雷
500 kV transmission line, multiple lightning strike,lightning protection
