电子式电流互感器高压端信号处理电路  

Design of High Voltage Signal Processing Circuit of Electronic Current Transformer

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

机构地区：[1]河北理工大学,河北唐山063009

出　　处：《仪表技术与传感器》2008年第7期17-18,21,共3页Instrument Technique and Sensor

基　　金：河北省科技攻关计划项目(062035161D-1);河北省教育厅自然科学基金项目(2006427);唐山市科技局研究基金(07160202d-7)

摘　　要：电子式电流互感器被广泛应用于电力系统中进行电流测量。为了提高测量精度,降低高压端的功耗,采用专用高精度Rogowski线圈作传感元件,设计一种新型模拟信号处理系统,即采用一条回路来完成测量和过载保护两种功能,并采用高精度低功耗元器件设计电路,从而提高了测量精度,降低了功耗。由试验结果可知此系统方便可行,精度可达到国标0.2级要求。Electronic current transformer has been used to measure current widely in power system. In order to improve meas- urement precise and reduce power consumption,this paper adopted new high precise Rogowski coil as sensor components,and de- signed a new analog signal processing system, namely adopted one circuit to fulfill measuring current and over load protection, and designed the circuit with high precise low consumed power components. So the measurement precise could be improved and power consumption could be reduced. The experiment result shows that the system is convenient and feasible ; the precision of this system can reach 0. 2 level requirement.

关 键 词：小电流测量 ROGOWSKI线圈 信号处理 

分 类 号：TM452.92[电气工程—电器]