一起500kV西门子断路器合闸故障分析

Analysis of Closing Fault of a 500kV Siemens Circuit Breaker

本文主要针对一起因电子元件损坏导致的500kV西门子3AT3EI型高压断路器合闸故障进行分析研究。根据现场故障现象,本文通过对该断路器的合闸控制回路和相应的闭锁控制回路进行仔细分析推导,寻找出故障发生真正原因,并根据故障原因提出相应的防范措施,为避免同类断路器设备此类故障再次发生提供借鉴,切实提高超高压电网设备的运行可靠性。

This paper mainly a nalyzes a closing fault of 500kV Siemens 3AT3EI high voltage circuit breaker caused by electronic component damage.According to the on-site fault phenomenon,this paper analyzes and deduces the closing control circuit and the corresponding locking control circuit of the circuit breaker,finds out the real cause of the fault,and puts forward corresponding preventive measures according to the fault causes,so as to provide reference for avoiding similar circuit breaker equipment from happening again,and effectively improve the operation reliability of ultra-high voltage power grid equipment.