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大型电力排灌站中的大型同步电动机的频繁启动和停机引起的实功和虚功冲击会影响电力系统的稳定性。起动过程中主要故障是直流励磁部分故障(同步牵入故障,起动“堵转”故障)、异步起动故障和阻尼环“打火”。同步牵入故障通常出现在励磁装
The real power and virtual impact caused by frequent starting and stopping of large synchronous motors in large-scale power station can affect the stability of power system. The main faults in starting process are DC excitation partial fault (synchronous pull-in fault, start-up “stalling” fault), asynchronous start fault and damping ring “sparking”. Synchronous pull-in fault usually appears in the excitation device