Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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测量用电流互感器铁芯材料对剩磁的影响

来源:电工电气发布时间:2016-03-15 15:15 浏览次数:699

测量用电流互感器铁芯材料对剩磁的影响 

于泳,汪良坤,连涛,樊世伟


东南大学 电气工程学院,江苏 南京 210096 
 

摘 要:针对剩磁问题分析了电流互感器产生剩磁的原因和剩磁所造成的影响,分别采用不同材料(硅钢片、坡莫合金、超微晶合金)做铁芯在EMTP-ATP中建模仿真,得出电流波形图。将有无剩磁情况下的二次侧电流波形分别导入MATLAB/SIMULINK软件的RMS模块进行计算,比较三种材料的相差和比差。仿真结果表明,坡莫合金误差最小,硅钢片误差最大。

关键词:测量;电流互感器;剩磁;铁芯材料

中图分类号:TM452 文献标识码:A 文章编号:1007-3175(2013)06-0011-04


Impacts of Iron Core Materials of Measuring Current Transformers on Residual Magnetism 

YU Yong, WANG Liang-kun, LIAN Tao, FAN Shi-wei 
School of Electrical Engineering, Southeast University, Nanjing 210096, China 
 

Abstract: Aiming at residual magnetism problem, this paper analyzed the residual magnetism and its influence caused by transformers. Different materials (silicon steel plate, permalloy, super micro crystal alloy) were taken to make iron core for simulation moulding in EMTP-ATP software, so as to get current waveform diagram. Current waveform at secondary side was guided into RMS module in Simulation of Matlab to carry out calculation and to make comparison of difference for the three materials. Simulation results show that permalloy is the minimum in error and silicon steel plate is the maximum in error.
Key words: measurement; current transformer; residual magnetism; iron core material


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