判断电容式电压互感器二次电压异常后故障的新试验方法

New Test Method to Determine the Fault of Capacitor Voltage Transformer After Abnormal Secondary Voltage

介绍电容式电压互感器(capacitor voltage transformer,CVT)的特点,针对目前运行中电容式电压互感器二次电压异常后常见故障,分析常规现场试验的局限性,推荐对故障的定位分析、综合判断的新试验方法,提出故障处理方案和对结构和制造工艺提出了减少此类故障的改进方案。

The characteristics of capacitor voltage transformer （CVT） are introduced. In view of the common fault of CVT in current operation after abnormal secondary voltage, analysis on the limitations of conventional field test is presented, fault location analysis and new test method of comprehensive judgment are recommended, and fault processing scheme is proposed, and improvement scheme on structure and manufacturing process for reducing such failure is also given.