电子式电流互感器相位差研究  

Research on phase error of electric current transducer

作　　者：张庆凌[1] 邸志刚[1] 侯国强[1] 贾春荣[1] 金建国[1] 

机构地区：[1]河北理工大学,河北唐山063009

出　　处：《传感器与微系统》2007年第11期28-30,33,共4页Transducer and Microsystem Technologies

基　　金：河北省科技攻关计划资助项目(062035161D-1);河北省教育厅自然科学基金资助项目(2006427)

摘　　要：为了提高用于小电流测量的电子式电流互感器的精度,必须对传感头进行优化,主要解决传感头的相位补偿问题。针对用于小电流测量的电子式电流互感器的特点,对传感头部分所产生相位差进行研究,根据研究结果设计了一种以全通滤波器为基础的相位补偿电路,并给出仿真结果和试验结果。结果表明其精度能达到0.2级。In order to improve the precision of electric current transducer used to measure small current, the sensing head must be optimized, mainly to resolve difficulty of phase compensation for sensing head. Aiming at the characteristic of electric current transducer used to measure small current, the phase error produced by sensing head is researched, according to result, an applied circuit based on all-pass filter to compensate phase error is designed,and emulation and examination results are given. The result indacates that its precision can meet 0.2 level.

关 键 词：电流互感器 传感头 相位差 

分 类 号：TM452.92[电气工程—电器]