LI Shun-yao. A Test Method for 220kV Capacitive Voltage Transformer[J]. High voltageapparatus, 2008, (3): 280-282.DOI：
220kV电容式电压互感器试验方法探讨
摘要
在不拆线的条件下
为了准确测量CVT的电容量和介损
笔者结合现场测试实例
采用AI6000C型变频介损电桥
对整体测量一次无中间抽头高分压比电容式电压互感器的试验方法进行分析
得出了用整体测试CVTC1、C2串联后的总电容和介损的方法来判断CVT的好坏是不科学的
并提出了采用自激法分别测量220kVCVT的C1、C2电容及介损的具体方法。
Abstract
In order to accurately measure capacitance and dielectric loss of a capacitive voltage transformer without disconnection
the author adopted a AI6000C dielectric loss bridge to analyze the testing methods for whole measurement without intermediate tap of a high voltage ratio CVT. It is concluded that taking the whole measure of CVT’s total capacitance and dielectric loss of C1
C2 in series to judge CVT is unscientific. Some specific methods are put forward to measure the C1
C2 capacitance and dielectric loss of 220 kV CVT respectively by using the method of self-excitation .
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