华能上安电厂电动机投切试验及烧毁原因分析

Analysis on the Cause of Motor Burnt-out and Cut-in and Cut-out Test in HUANENG Shang'an Power Plant

针对上安电厂 6kV真空断路器操作高压电动机频繁启动并多次烧毁的现象展开试验研究 ,通过试验收集了真空断路器的操作过电压倍数与截流大小 ,并根据真空断路器的特点分析了造成电动机烧毁的原因 。

This paper studies the phenomenon that the motor is frequently burnt out,which is interupted by 6 kV vacuum circuit breaker which undertakes frequently start-up.Through the test,many data of operational overvoltage of the vacuum circuit breakers and interrupting current are collected.The cause of motor burnt-out is analysed according to the characteristics of the vacuum circuit breaker,some improving suggestions are accordingly puts forward .