粗糙集理论在高压断路器状态监测中的应用

Application of Rough Set Theory in High Voltage Circuit Breaker Condition Monitoring

本文基于现代电力系统设备检修体制,论述了对高压断路器实行状态监测的必要性和可能性.由于断路器故障机理复杂,故障类型与故障征兆间联系具有不确定性,不能单靠某一种或几种试验来确定其故障类型和故障位置的特点,提出利用振动信号监测和诊断高压断路器的机械状态,引入粗糙集理论,可以简化进行故障诊断时所需的信息,从而提高故障诊断的准确率.

Based on modern power system equipment maintenance system, this article expounds it is necessary and possible to implement condition monitoring on high-voltage circuit breaker. Because breaker failure mechanism is complex, the relationship of fault type and fault symptom is uncertain, it cannot make sure the fault type and fault place by one or several experiments. It suggests using vibration signal to monitor and＇diagnose the machinery condition of high voltage circuit breaker. Usingrough set theory can simplify the required information of fault diagnosis, and improve the accuracy of fault diagnosis.