双级电流互感器在一次导体偏心情况下的误差分析

Analysis of Two-stage Current Transformer Error Measurement in Under Primary Conductor Eccentricity

本文中作者理论分析了一次导体偏心对双级电流互感器的误差影响,并借助仿真软件进行电磁场分析,对比研究了普通电流互感器和双级电流互感器在偏心情况下输出的二次电流波形,验证了双级结构对电流互感器在一次导体偏心下缓解误差影响的作用。最后搭建误差测试平台对一次导体偏心开展试验,测试数据与仿真结果趋势一致。

The influence of the eccentricity of the primary conductor on the error of the two-stage current transformer is theoretically analyzed,and the electromagnetic field analysis is carried out with the help of simulation software.The secondary current waveforms output by common current transformer and two-stage current transformer under eccentric condition are comparatively studied,and the effect of two-stage structure on reducing the error of current transformer under the eccentricity of primary conductor is verified.Finally,an error test plaform is built to test the eccentricity of the primary conductor,and the test data is consistent with the simulation results.