大型变压器直流电阻测量方法的研究  

Study on the Measuring Method of Large Transformer DC Resistance

作　　者：李新星[1] 王颖[1] 

机构地区：[1]国网山西省电力公司临汾供电公司,山西临汾041000

出　　处：《山西电力》2015年第1期33-36,共4页Shanxi Electric Power

摘　　要：分析了大型变压器,特别是三相五柱式变压器直流电阻测量中存在的问题,提出了全压恒流电源法与消磁法相结合的改进方法。经实例测试,改进方法测量结果准确、测量时间短,同时解决了剩磁问题。This paper analyzes the problems existing in the measurement of DC resistance of large transformer especially the three-phase five-column transformer.A new method is proposed based on the full-voltage constant-current power supply method and degaussing method.By practical test,the improved method can get accurate result and shot measurement time without residual magnetism.

关 键 词：变压器 直流电阻 消磁法 快速测量 

分 类 号：TM934.12[电气工程—电力电子与电力传动]