电流互感器饱和特性分析与仿真研究

he studies of current transformer impact on relay protection have been many, but current transformer for electric energy metering are few from the theoretical analysis and simulation impact. At frist,this paper discusses the current transformer works, analysis of current transformer error and find out that saturation effect on the energy measurement can not be ignored. Secondly, it uses MATLAB simulation software to build the simulation model and detailed analysis and simulation is made on steady-state and transient current transformer saturation characteristics, consistent with the theory. Finally, the paper proposes a number of recommendations on how to avoid the impact of current transformer on the energy measurement. there is some reference value.