低电流外推法检定大电流互感器技术的应用  

Application of Low Current Extrapolation Technique on Calibrating High Current Transformer

作　　者：耿建坡[1] 史轮[1] 岳国义[1] 郑光明[1] 陶鹏[1] 

机构地区：[1]河北省电力研究院,河北石家庄050021

出　　处：《河北电力技术》2007年第2期1-4,共4页Hebei Electric Power

摘　　要：介绍了一种简便易行的现场检定大电流互感器的新方法———低电流外推法。该法采用低电流比例标准,用比较法测出无非线性补偿的被检互感器在低电流下的空载误差,通过测量互感器内部参数,计算外推出无非线性补偿的互感器在大电流下的误差,其检定结果与传统比较法相符。A new method for field engineering calibration high current transformer:low current extrapolation is introduced.Low current proportion standard is used in the method.First,the no-load error of the detected current transformer without nonlinear compensation under low current is determined by relative method.Then after measuring inner para-meter of the current transformer,the high current error of current transformer without nonlinear compensation is got by extrapolation.Calibration results show that the method is coincidence with traditional way.

关 键 词：电流互感器 低电流外推法 检定 

分 类 号：TM452[电气工程—电器]