摘要
简述了电力变压器绕组直流电阻测量的基本原理,对某水电厂500k V主变预防性试验过程出现的低压绕组直流电阻测量时间过长的现象,进行了理论分析,并通过高压侧绕组短路接地法、高压侧绕组开路法以及助磁法三种试验方法进行了验证,提出了快速测量的有效方法。
This paper Introduced the basic principle of measurement on dc resistance of power transformer winding. Low voltage winding DC resistance measuring test is time consuming in the processing of 500 k V main Transformer preventive test. This phenomenon is analyzed in theory, and verified by three methods, there are high voltage winding short circuit and grounding method, high voltage winding open circuit method, and saturable magnetic circuit method. This thesis concluded the most effective method to reduce the time consuming in this test.
出处
《电气技术》
2015年第11期12-15,共4页
Electrical Engineering
关键词
变压器
低压绕组直流电阻
快速测量
power transformer
low voltage winding resistance
quick measurement
