摘要
电容式电压互感器(CVT),具备电磁式电压互感器的一切功能,与电磁式电压互感器相比,多了载波、绝缘强度高等优点。本文对110 kV电容式电压互感器的结构原理进行了简要介绍,主要对其试验中电容和介损、极性测量等测试的方法进行了探讨,并指出与现行测试方法的差异处,然后进行分析比较,为CVT的试验特别是中压端子无引出抽头的CVT试验提供了更多符合现场试验安全要求的方法。
Capacitor voltage transformer possesses all functions of electromagnetic type voltage trans- former and, compared to the later, has such advantages as carrier and high dielectric strength. In this paper, the structural principle of 110 kV capacitor voltage transformer is introduced, the test method for medium loss and capacitance test and polarity etc. are discussed. The difference with ex- isting test method are pointed out, then analyzed and compared, which provides more methods com- plying with safety requirement of field test to the test of CVT, especially to the test of CVT with me- dium voltage terminal without lead out tap.
出处
《电力电容器与无功补偿》
2012年第6期42-46,共5页
Power Capacitor & Reactive Power Compensation
关键词
电容式电压互感器(CVT)
介损测量
自激法
极性
capacitor voltage transformer（ CVT）
dielectric loss measurement
self-excitation meth-od
polarity
