电容式电压互感器状态监测技术研究现状与发展

Current Status and Development of Condition Monitoring Technology for Capacitor Voltage Transformer

作为电力系统中重要的测量、保护、通信设备,电容式电压互感器(CVT)的稳定运行对电网安全至关重要,然而其运行故障时有发生,检修工作需耗费大量的人力和物力,根据CVT的现场运行经验来看,对其进行实时、精确、高效的状态监测仍是一大难点。介绍了CVT各组成部件的常见故障类型及故障产生机理,并对其状态监测方法进行详细论述与分析,展望了CVT状态监测方法的发展趋势和方向。

Capacitor voltage transformer（CVT） is the main equipment with functions of measurement, protection, and communications in power system. The stable operation of CVT is very important to the security of grid. However the CVT＇s failure occurs sometimes and it needs much manpower and many resources to maintain. According to the field operation experience of CVT, it is still difficult to give the real-time, accurate and effective condition monitoring to the CVT. So the paper introduces the common failure type and mechanism of CVT＇s components firstly, and then describes and analyzes its existing condition monitoring methods in detail. At last, the paper gives the prospection to the development trend and direction of the condition monitoring of CVT.