磁光式电流互感器性能分析与比较  

Analysis and Comparison of Performances of MOCTs

作　　者：陈豪[1] 李晓明[1] 徐志超[1] 杨玲君[1] 

机构地区：[1]武汉大学电气工程学院,武汉430072

出　　处：《高压电器》2012年第5期43-48,共6页High Voltage Apparatus

基　　金：中央高校基本科研业务费专项资金资助(20102070101000073)~~

摘　　要：通过对基于单光路、双光路以及改进型双光路检测法的磁光式电流互感器(MOCT)工作原理的研究和详细介绍,指出工作波长波动、起偏器与检偏器透光轴交角误差等因素都会对MOCT的输出信号产生影响,分析了当输出信号满足国标中0.2级和0.5级准确度要求时,不同工作中心波长情况下3种光路磁光式电流互感器可承受的工作波长和透光轴交角误差的变化范围及变化趋势,并对3种互感器的性能进行比较。该研究可为磁光式电流互感器设计人员提供有用的参考。The operating principles of three kinds of magneto-optical current transducers （MOCTs） based on single optical path detection method, dual optical paths detection method, and improved dual optical paths detection method, respectively, are analyzed. It is found that the output signals of the MOCTs are influenced by both the fluctuation of operating wavelength and the intersecting angle error of optical axes of polarizer and analyzer. Variation scope and variation trend of the operating wavelength and the intersecting angle error finder different central operating wavelengths are analyzed when the output signals of the MOCTs can satisfy the accuracy requirement of 0.2 class or 0.5 class, and the performances of three kinds of MOCTs are compared. This study may offer a reference for the MOCT designers.

关 键 词：磁光式电流互感器 单光路检测法 双光路检测法 工作波长 透光轴交角 

分 类 号：TM452[电气工程—电器]