励磁系统的事故跳闸是非正常状态下的停机过程,对主要设备起到快速灭磁、降低事故扩大化的作用,但另一方面对励磁设备本身也有一定的影响,如有异常很可能造成对设备的烧损,所以应该尽量避免此类事故的发生。文中分析了引起事故跳闸的诸种原因,希望对励磁维护人员的日常维护起到一定的帮助作用。 Excitation system trip accident is an abnormal state of the shutdown process, the main equipment to quickly demagnetization, reducing the magnification of the accident, but on the other hand the excitation device itself has a certain impact, if any abnormality is likely to cause the device Of burning, so should try to avoid such accidents. In this paper, the causes of accident tripping are analyzed, hoping to play a helping role in the routine maintenance of the excitation maintenance personnel.