一起110kV电容式电压互感器缺陷分析

A defect analysis of 110 kV capacitior voltage transformer

电容式电压互感器(capacitor voltage transformer,CVT),是变电站的重要设备,主要用来测量线路电压,为二次设备提供电源等。通过对一起某变电站110 kV电容式电压互感器异常发热缺陷分析,结合电气试验、油色谱检测等,对缺陷部位和原因进行诊断,并提出了相应的防范措施。

Capacitor voltage transformer(CVT)is mainly used to measure line voltage and provide power to the secondary equipment.By analysing an abnormal heating defect of a 110 kV CVT in a substation,the defect location was diagnosed through electrical test,oil chromatographic detection,and the defect causes were found out.Finally,the corresponding preventive measures were proposed.