一起柱上真空断路器拒动故障分析

Failure Analysis of a Column Vacuum Circuit Breaker with Refusing Action

柱上断路器是提升配网可靠性的关键设备,随着环境的变化及使用年限的增加,柱上断路器不可避免地会发生故障,严重影响供电可靠性。对一起柱上真空断路器拒动故障进行分析,发现该柱上断路器的控制器安装工艺方面的缺陷,通过采取改进措施及时避免了同类故障的再次发生,提升柱上断路器的入网质量,从而保障配网的安全稳定运行。

Column circuit breaker is the key equipment to improve the reliability of distribution network. With the change of environment and the increase of service life, the faults of column circuit breakers becomel inevitable, which will seriously affect the reliability of power supply. The failure of a column vacuum circuit breaker with refusing action was analyzed in this paper. The defects in the installation process of a manufacturer’s controller were founded, and the recurrence of similar failures was avoided timely so as to provide reference for the failure analysis of similar equipment. The corresponding improvement measures were put forward to improve the network access quality of the column circuit breaker and ensure the safe and stable operation of the distribution network.