光学电流互感器对提高电流动态测量品质的研究

Applying optical current transducer to improve the dynamic measuring characteristic of the current

介绍了光学电流互感器的基本原理,与传统的电磁型电流互感器相比,基于Faraday磁旋光效应原理的光学电流互感器在测量原理上不存在测量频带问题,无磁饱和问题。通过比较两种串联运行的电流互感器的现场运行数据,分析其直流分量、基波和谐波含量,得出光学电流互感器具有优良的动态测量特性的结论。

Fundamental of Optical current transducer （OCT） is presented. Compared with the conventional electromagnetic CT, the OCT based on Faraday magneto-optic effect has no measuring frequency band in measuring theory, and has no saturation. After comparing the actual sampling datas of the two kinds of current transducer, and analysing their direct current components, base wave and harmonic wave components, it proves that the OCT has good dynamic measuring characteristic.