等电位平移法测量500kV大型变压器直流电阻

Disscussion on Equal Potential Translation Method of 500 kV Large Transformer DC Resistance

分析了等电位平移与助磁法结合方式测量500 kV大型变压器直流电阻的试验方法,并通过现场测量实例与单纯的助磁法测量结果进行比较,得出较满意结果。证明该方法是可行的并具有很好的实用价值,减轻了劳动强度,减小了高空作业的不安全因素,工作效率得到明显提高,可供现场测试工作者参考。

This paper analyzes the test combined with the equal potential method and saturable magnetic method to measure 500KV large-scale transformer DC resistance,and through on-site measurements with a simple example to compare with the results of saturable magnetic measurements, it obtained satisfactory results. It has proved that the method is feasi- ble and has good practical value,thereby reducing the labor intensity,reducing the insecurity of the high-altitude opera- tions,working efficiency has been enhanced,and making reference to field-testing workers.