Under the data acquiring and the event sequence recording of power system, if circuit breaker auxiliary contacts have been used as the basis of events, the event sequence recording may be not realistic in some cases. 本文论述了在电力系统信息采集与事件顺序记录系统中,若以断路器的辅助接点动作信息作为事件记录的依据,在某些情况下所得到的事件顺序记录可能是不真实的。