摘要
避雷器作为一种保护电气设备免受高瞬态过电压危害并限制续流时间的电器,能否可靠运行关系到整个电网的安全稳定,如何有效地预防避雷器故障事故的发生是一个常提常新的问题。文章分析了海城变10k V线路单相接地造成线路避雷器频繁故障,是因为系统的容性电流过大而未采取合理的补偿措施造成。为了避免类似事故的再次发生,采用加装消弧线圈来解决这个问题。
Lightning arrester can protect the electrical equipment from high transient over voltage,whose reliable operation affects the security and stability of the whole power grid. How to prevent the occurrence of lightning arrester failure accident is an important issue. In this article, we try to analyze the accident happened in Haicheng substation which causes a surge arrester frequent fault, in order to find a solution to solve the occurrence of similar accidents.
出处
《自动化与仪器仪表》
2015年第2期185-186,共2页
Automation & Instrumentation
关键词
避雷器
单相接地
电容电流
消弧线圈
Arrester
Single-phase grounding
Capacitive current
Arc suppression coil
