摘要
通过对频繁发生的 35kV电容式电压互感器故障的分析 ,发现此类型互感器沿用 110kV以上电容式电压互感器的部分元件和某些设计概念 ,不适用于中性点非有效接地系统 ,易在间歇性弧光接地时发生过电压造成互感器热击穿 。
According to analysis of the frequent faults of capacitive voltage transformer(CVT), the writer finds the type of CVT continue to use some CVT's elements in 110kV and some desegn concepts. It isrit fit to neutral uneffective earthing system. Overvoltage is easy to make CVT thermal puncture when intermittent arc earthing happens. At the same time, the writer raises valuable suggestions.
出处
《电力学报》
2003年第1期51-52,共2页
Journal of Electric Power
关键词
35KV电容式电压互感器
空载特性
绕组
故障分析
技术改进
热击穿
capacitive voltage transformer
neutral uneffective earthing system
magnetic saturation
thermal puncture
partial pressure ratio
