摘要
对一起电磁式电压互感器故障进行检测分析,发现是因为过电压造成电压互感器一次绕组匝间绝缘损坏。结合电磁式电压互感器结构及使用情况,提出选用优质励磁特性的电压互感器、增加消谐装置、改变互感器接线方式等措施可有效预防该类故障的发生。
A failure of an electromagnetic vohage transformer is analyzed.Inspection test indicates that the failure is due to damaged interturn insulation which is caused by overvohage.Combined with the structure and usage of the transformer, measures to prevent these failures are put forward, such as choosing high quality characteristic excitation voltage transformer, addition of harmonic elimination device, and pattern shifting of the transformer wiring.
出处
《山东电力技术》
2015年第6期66-68,共3页
Shandong Electric Power
关键词
电磁式电压互感器
过电压
匝间绝缘
electromagnetic voltage transformer
overvohage
interturn insulation
