摘要
电容式电压互感器(CVT)的电容量和介质损耗角的测量是检验设备绝缘性能的一项重要试验,特高压1 000 kV CVT因其具有自身独有的特性,其试验方法也具有特殊性。比较系统地介绍了特高压变电站中2种不同结构的500 kV CVT电容量和介损的测量方法。主要针对1 000 kV电容式电压互感器结构特殊性采用了一种新的试验方法,通过现场试验,测试结果符合特高压交流试验示范工程电气设备交接试验标准要求,证明采用外高压、内标准、正接法测量CVT中压臂电容C2是可行的。
The measuring of dielectric loss and capacitance of capacitive voltage transformer is important for equipment insulation level. The test on uhra-high voltage 1 000 kV capacitive voltage transformer is different than other transformers. The method to measure two different structural 500 kV CVT is systematically introduced. Furthermore, a new test method of 1 000 kV CVT is proposed according to particular feature of 1 000 kV CVT. The method use external standard capacitor, internal high voltage and positive connection to measure C2 capacitor of CYT. The test results meet standards of UHV AC pilot project hand-over regulations according to the on-site test, which proves the validity of proposed method.
出处
《中国电力》
CSCD
北大核心
2012年第4期38-41,共4页
Electric Power
关键词
电容式电压互感器
介损
电容
自激法
capacitor voltage transformer
dielectric loss
capacitance
self-excitation method
