一起断路器误动作的原因分析

Analysis of a maloperation accident in the breaker

重合闸是保障电网安全稳定的重要手段之一,但是当重合闸与断路器配合不好时就可能会发生事故。通过对一起重合闸缺陷引起断路器误动作的过程详细描述,分析了误动原因,对有缺陷的保护回路提出了改进方法,较好地解决了重合闸误动作问题,提高了设备运行稳定性。

The auto-reclosure is one of the important means for the reliability and stability of the power network . When the auto-reclosure cannot cooperate with the circuit breaker, accidents will happen. Through detailing the maloperation process of the circuit breaker because of the defect in the auto-reclosure, this paper analyses the course of the accident and improves the defective protections circuit .The proposed method effectively solves the problem of the auto-reclosure maloperation and improve the stability of device operation.