气隙铁心的磁特性及对电流互感器的影响分析

Analysis of Magnetic Properties about the Air-Gapped Core and Its Influence on Current Transformer

摘要: 本文用拟合曲线函数的方法构建了气隙铁芯的动态磁化模型，分析了气隙对铁芯磁特性的影响，在此基础上对不同气隙比的电流互感器进行了对比仿真，得到了气隙铁芯电流互感器相对于闭合铁芯电流互感器差别，并从理论上量化分析了气隙对电流互感器误差的影响。

Abstract: This paper constructs the dynamic magnetization model of air-gapped core by fitting curve func-tion, and analyzes the influence of air gap on core magnetic properties. On this basis, the current transformer of different air gap ratio is simulated. The difference between the air-gapped core current transformer and the closed core current transformer is obtained, and the influence of air gap on current transformer error is analyzed theoretically.