铁芯开气隙电流互感器暂态特性仿真

Simulation of Transient Characteristics for Air Gapped Core Current Transformer

开气隙电流互感器在继电保护系统中越来越广泛的运用,但对其暂态特性的研究却很少涉及。利用J-A模型对开气隙互感器铁心的动态磁滞回环进行模拟,并对其磁化特性进行研究。建立了铁心开气隙互感器的仿真模型,并结合一个互感器实物进行了仿真,根据仿真结果得了气隙互感器的特性,以及不同气隙对互感器特性的影响。

The air gapped core current transformer is widely used in the relay protection system,but the study on its transient characteristics has rarely been involved.The simulation of hysteresis loop based on J-A theory for the core of the transformer was proposed,and its magnetic properties were studied.The simulation model for air gapped core transformer was established,and the model was simulated through a real transformer.According to the simulation results,the characteristics of air-gapped transformer were obtained and the influence of different air gap on transformer performance was known.