摘要
随电压等级升高,大型电力变压器的体积也不断增大,为此需要对变压器铁心进行解体来达到运输的目的;但铁心结构的改变可能会引起漏磁分布不均、局部过热等问题。本文基于有限元法对一台三相五柱解体变压器短路性能进行了三维电磁场仿真研究,计算了变压器漏磁场和绕组短路阻抗,仿真结果与实验结果误差较小,验证了仿真方法的正确性。
As the voltage increases, the volume of large power transformer enlarges continuously. So people have to disintegrate the transformer core for transportation. However, the change of structure may cause leakage field distribution of maldistribution and local overheating. The 3D electromagnetic field in power transformer simulation of three-phase five-column transformer short-circuit performance and the calculation of the leakage magnetic field is based finite element method. The difference between simulation results and the experimental results is rather small which verifies the accuracy of the simulation.
出处
《电气工程学报》
2016年第5期46-50,共5页
Journal of Electrical Engineering
基金
湖南省科技计划项目经费资助项目(2015GK3033)
湖南省科技计划项目经费资助项目(2015GK2033)
湖南省2009年教育厅科学研究项目(09C884)
邵阳市2015年科技计划重点项目
关键词
解体变压器
漏磁场
短路阻抗
有限元法
Disintegration transformer
leakage magnetic field
short circuit impedance
finite element method
