电磁式电压互感器空载励磁电流异常的原因分析Analysis of Abnormal No-load Excitation Current of Electromagnetic Voltage Transformer
吴尊东,朱旭,王晓明
WU Zun-dong,ZHU Xu,WANG Xiao-ming (Jinhua Electric Power Bureau
摘要(Abstract):
介绍了电磁式电压互感器空载励磁电流测试的原理和方法,分析了110kV国贸变GIS中大国1505线路A相压变空载励磁电流异常的原因,与出厂试验数据进行比较,并经过准确计算查找出了高压侧对地电容的影响因素,为GIS线路压变空载励磁电流的测量提供了借鉴。
This paper introduces testing principles and methods of no-load excitation current of electromagnetic voltage transformer.The paper analyzes reason of abnormal no-load excitation current of electromagnetic voltage transformer of Daguo 1505 line A phase in 110 kV Guomao substation GIS,compares with factory test data,calculates accurately and finds out influencing factors of a high-voltage side-to-ground capacitance.The paper provides a reference for no-load excitation current measurement of GIS line electromagnetic voltage transformer.
关键词(KeyWords):
电磁式TV;励磁电流;对地电容;激磁电流
electromagnetic voltage transformer;exciting current;ground capacitance;magnetizing current
基金项目(Foundation):
作者(Author):
吴尊东,朱旭,王晓明
WU Zun-dong,ZHU Xu,WANG Xiao-ming (Jinhua Electric Power Bureau
DOI: 10.19585/j.zjdl.2010.01.005
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- 电磁式TV
- 励磁电流
- 对地电容
- 激磁电流
electromagnetic voltage transformer - exciting current
- ground capacitance
- magnetizing current