摘要
2014年6月500 k V崇左变电站发生了一起35 k V站用电源线电缆终端端子熔解断落故障,通过对故障点情况的分析,得出故障的主要原因是由于雷击35 k V桃崇线2号杆C相造成线路三相短路,较大的工频短路电流较长时间地流过接触不良的电缆终端端子导致电缆锥头过热后烧坏熔断。笔者通过对电缆头熔解断落情况进行分析,提出了防止此类故障发生的措施和建议。
There are broken-off and melting-off faults occurring at cable terminals of 35 kV station-service power line of 500 kV Chongzuo Substation in June, 2014. Based on the analysis of fault point, three-phase short circuit on Phase-C 2# Pole of 35 kV Tao-Chong Line is caused by lightning. Large power-frequency short-circuit current flows through poor-contact cable terminal in a long time, which results in failed cable cone head by overheating. This paper analyzes the above mentioned problem and presents measures and suggestions against such faults.
出处
《红水河》
2016年第5期107-110,共4页
Hongshui River
