铁芯剩磁对电流互感器性能的影响研究  

Research on the Effect of Core Residual Magnetism on the Performance of Current Transformers

作　　者：林凯 李燕芳 潘慧 LIN Kai;LI Yanfang;PAN Hui

机构地区：[1]国网宁德供电公司,福建宁德352100

出　　处：《电力系统装备》2023年第8期67-69,共3页Electric Power System Equipment

摘　　要：文章通过Simulink仿真软件,分析在不同条件下铁芯剩磁对电流互感器性能造成的影响,检验电流互感器铁芯剩磁在不同影响因素下的变化规律。经过研究数据证明,影响电流互感器铁芯剩磁的因素趋于多样化,如故障电流开断时间、一次回路时间常数、二次负载阻抗值及故障短路电流大小等,且影响程度和剩磁大小呈正比。This article uses Simulink simulation software to analyze the impact of iron core remanence on the performance of current transformers under different conditions,and to test the changes in iron core remanence of current transformers under different influencing factors.After research data,it has been proven that the factors affecting the residual magnetism of the current transformer core tend to be diversified,such as the fault current breaking time,primary circuit time constant,secondary load impedance value,fault short-circuit current size,etc.,and the influence of these factors is proportional to the residual magnetism size.

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：TM41[电气工程—电器]