摘要
电容式电压互感器(CVT)近年来在电力系统中得到大量应用,对两个电压互感器二次电压异常故障实例分析发现,按常规现场试验方法无法对故障设备的故障原因进行准确判断。针对这一问题,本文提出了一种高压电容式压变变比故障的准确测试法,可在现场预试时对电磁单元的特性和绝缘状态准确分析,并提出了电容式电压互感器的设计制造要求。
Capacitor voltage transformer (CVT) is widely used in power system in recent years. Two CVT secondary voltage fault cases have been analyzed in this paper and the results show that common field test method cannot accurately cover these failure causes. To solve this problem, a new accurate method of fault diagnosis on CVT has been given. Furthermore, design and manufacture re-quirement of CVT has been proposed.
