真空断路器开断高压电动机的操作过电压及限制措施

The Operating Over-voltage during Opening and Closing High-voltage Motor with Vacuum Breaker and the Control Method

介绍了真空断路器在开断高压电动机的操作时产生的过电压及其限制方法。对三种过电压(截流过电压、多次重燃过电压、三相同时截流过电压)和三种限制方法(相对地加装RC阻容吸收装置、相对地加装并联电容器、相对地加装氧化锌避雷器)进行了概括叙述。

The paper describes the over-voltage during open-ing and closing high voltage motor with vacuum breaker and the control methods.The over-voltage is resulted from current cutting off,multiply burning and simultaneously cutting-off of the three phase currents respectively.And three control meth-ods i.e.relatively adding installation of RC absorption units,parallel capacitor and zinc oxide arrestor are summed up re-spectively.