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磁光式电流互感器模型与测量性能分析
引用本文:何照胜,李晓明,徐志超.磁光式电流互感器模型与测量性能分析[J].电测与仪表,2015,52(7).
作者姓名:何照胜  李晓明  徐志超
作者单位:1. 武汉大学电气工程学院,武汉,430072
2. 南水北调中线干线工程建设管理局,北京,100083
摘    要:对应用于智能变电站电能质量电流数据测量的磁光式电流互感器进行研究。实际情况下,工作波长波动、起偏器与检偏器透光轴交角误差对磁光式电流互感器测量造成影响,详细地论述了磁光式电流互感器数学模型构建的过程,建立了磁光式电流互感器传感头的琼斯矩阵,基于改进型双光路检测法建立了实际情况和理想条件下的磁光式电流互感器的整体模型。基于理想条件和实际情况,讨论了互感器对谐波电流扰动信号的测量性能。

关 键 词:磁光式电流互感器  改进型双光路检测法  琼斯矩阵  扰动信号
收稿时间:2014/5/19 0:00:00
修稿时间:2014/5/19 0:00:00

Analysis on error and measuring performance of MOCT
HE Zhaosheng,LI Xiaoming and XUZhi-chao.Analysis on error and measuring performance of MOCT[J].Electrical Measurement & Instrumentation,2015,52(7).
Authors:HE Zhaosheng  LI Xiaoming and XUZhi-chao
Affiliation:School of Electrical Engineering,Wuhan University,School of Electrical Engineering,Wuhan University,Construction and Adminstration Bureau of Middle Route Project in South-to-North Water Transfer
Abstract:The MOCT(magneto-optical current transformer) is analyzed ,which is used in smart substation for power quality current data measurements. 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. The process of a mathematical model of magneto-optical current transformer is discussed in detail, first magneto-optical current transformer sensor head Jones matrix is established, An overall model is established under ideal conditions and the actual conditions based on an improved dual optical paths detection method. The measurement performance of harmonic current transformer signal disturbance is discussed based on ideal conditions and the actual situation.
Keywords:MOCT  improved dual optical paths detection method  Jones matrix  disturbance signal
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