Rogowski结构电子式电流互感器复合误差的检测方法  

The Method of Rogowski Structure of Electronic Current Transformer Composite Errors Calibration

作　　者：毛安澜[1] 叶国雄[1] 吴士普[1] 陈晓明[1] 费烨[1] 刘彬[1] 

机构地区：[1]国网电力科学研究院,武汉430074

出　　处：《电测与仪表》2011年第4期30-35,44,共7页Electrical Measurement & Instrumentation

摘　　要：随着电子式电流互感器(ECT)的广泛应用,探求精确、便于现场实现的电子式电流互感器误差检测方法十分必要。本文提出了一种Rogowski结构电子式电流互感器的复合误差检测新方法。通过对Rogowski线圈输出信号的积分还原的深入分析,利用传递函数对比了硬件积分和软件积分两种方案的优缺点,提出采用希尔伯特变换的数字积分,并用插值法来修正误差的方案。试验结果表明,该方法满足现场检测的需要。Research on the precision and convenient method of ECT error calibration on locale is necessary with wide application of ECT.The paper proposes a novel method of rogowski structure of ECT composite errors calibration.Through analysis of rogowski coil output signal which reverted by integral,the paper compares advantages and disadvantages of the hardware integrator and software integrator by transfer function,and proposes a method which adopted digital integration of hilbert transform and fix errors by interpolation method.The results show that the method to meet the needs of locale calibration.

关 键 词：电子式电流互感器互感器 复合误差 数字积分 插值法 现场检测 

分 类 号：TM935[电气工程—电力电子与电力传动]