电流互感器铁心剩磁影响因素仿真分析  

Simulation analysis of factors affecting remanence of current transformer core

作　　者：邓成林 蔡新景 付丁丁 DENG Chenglin;CAI Xinjing;FU Dingding(School of Electrical Engineering,Shenyang University of Technology,Shenyang 110870)

机构地区：[1]沈阳工业大学电气工程学院,沈阳110870

出　　处：《电气技术》2021年第9期22-26,共5页Electrical Engineering

摘　　要：本文通过Matlab中的Simulink仿真软件对不同影响因素下的电流互感器铁心剩磁进行仿真分析,验证电流互感器铁心剩磁在不同影响因素下的变化规律。研究表明,电流互感器铁心剩磁在暂态非周期分量、故障电流的开断时间、一次回路时间常数、故障短路电流大小及二次负载阻抗值的影响下都有明显的变化;影响因素的作用越强,其产生的剩磁就越大。In this paper,Simulink software in Matlab is used to simulate and analyze the remanence of current transformer core under different influence factors and verify that the remanence of current transformer core has its changing law under different influence factors.The results show that the remanence in the current transformer core changes obviously under the influence of the transient aperiodic component,the breaking time of the fault current,the time constant of the primary circuit,the amplitude of the fault short circuit current and the impedance of the secondary load.The stronger the influence factors,the greater the remanence will be.

关 键 词：电流互感器 剩磁 变化规律 暂态非周期分量 仿真 

分 类 号：TM452[电气工程—电器]