摘要
铁芯是变压器主磁通的传输路径,在变压器磁场相关仿真建模中铁芯模型是不可缺少的部分。本文采用有限元法建立片状仿实型、矩形均匀化、圆柱型三种不同铁芯模型,通过施加短路电流激励获得了不同模型下漏磁通密度、电磁力密度变化规律和分布,并加以对比。最后以实际片状仿实型铁芯模型作参考,对绕组累积效应变形量进行仿真对比,仿真结果为矩形和圆柱型铁芯的误差均在10%以内,表明在提高变压器相关仿真效率问题时,矩形和圆柱型铁芯可提供建模方法参考。
The iron core is the transmission path of the main magnetic flux of a transformer,and the iron core model is an indispensable part in the simulation modeling of transformer magnetic field.The finite element method was used to establish three types of iron core models,namely,sheet shaped,rectangular homogenized,and cylindrical.By applying short circuit current excitation,the variation rules and distribution comparisons of leakage magnetic flux density and electromagnetic force density under different models were obtained.Finally,a simulation comparison of the cumulative effect deformation of windings is conducted using the actual sheet shaped simulated iron core model as a reference.The simulation results show that the error of both rectangular and cylindrical iron cores is within 10%,indicating that rectangular and cylindrical iron cores can provide a reference for modeling methods when improving the efficiency of transformer related simulation.
作者
李堃
罗竣匀
刘君
吕黔苏
曾华荣
陈沛龙
徐舒蓉
LI Kun;LUO Junyun;LIU Jun;LYU Qiansu;ZENG Huarong;C HEN Peilong;XU Shurong(Electric Power Research Institute of Guizhou Power Grid Co.,Ltd.,Guiyang 550002,Guizhou,China;Joint Laboratory of Ice Prevention&Disaster Reducing of China Southern Power Grid Co.,Ltd.,Guiyang 550002,Guizhou,China;The Electrical Engineering College,Guizhou University,Guiyang 550025,Guizhou,China)
出处
《电力大数据》
2023年第1期51-59,共9页
Power Systems and Big Data
关键词
变压器
铁芯
漏磁场
累积效应
有限元仿真
transformer
core
leakage field
cumulative effect
finite element simulation
