电力系统事件顺序记录的分辨率与元件动作实时信号的检测

The Time-Resolution of Event Sequence Recordings and the Measurement of Power System Element Movement Real-Time Signals

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。在此基础上,文中提出了电力系统元件动作的依据为元件电流,并确定了元件电流的检测模型,采用很简单的电路得到了元件动作的实时信息。由此得到的事件顺序记录是可信的,其分辨率是确实的。

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. In this paper, it is presented that the movement of power system element is based on its current. The measurement model of the element current is given. The real-time signal of the element movement is obtained with a simple circuit. The result shows that the event recording is reliable and its resolution is good.