大型变压器螺旋式绕组扭转变形的仿真研究  

vSimulation Study on Torsional Deformation of Large Transformer Helical Winding

作　　者：许俞彬 景崇友[1,2] 王建民[2] 赵峰 张栋[2] Yubin Xu;Chongyou Jing;Jianmin Wang;Feng Zhao;Dong Zhang(School of Electrical Engineering,Hebei University of Technology,Tianjin 300130,China;Baoding Tianwei Group Tebian Electric Co.,Ltd,Baoding 071056,China ？Email： [e-mail])

机构地区：[1]河北工业大学电气工程学院,天津300130 [2]保定天威保变电气股份有限公司,河北保定071056

出　　处：《电气工程与自动化（中英文版）》2017年第1期1-8,共8页Electrical Engineering and Automation

摘　　要：变压器发生短路时,螺旋式绕组所受的短路电动力将包含很大的切向力.轴向电流分量与辐向漏磁场共同作用会产生较大的扭矩.文章中建立了螺旋式绕组的二维和三维磁场-结构力场耦合模型,对变压器的漏磁场、螺旋式绕组的切向力进行了仿真计算.得到了变压器短路时低压螺旋式绕组的切向力大小、分布规律.通过两种建模结果的对比分析,检验了计算方法的可靠性.在此基础上,研究了螺旋角和轴向预压紧力对螺旋式绕组切向位移的影响,得到了产品设计中减小绕组切向位移的-些应用结论.The short-circuit force of the helical winding will contain a large tangential force when the transformer shorted. The combined action of axial current component and radial leakage magnetic field will produce great torque. This paper established the coupling model of two dimensional and three dimensional magnetic field-structural force field of helical winding and calculated the leakage magnetic field of transformer and the tangential force of helical winding .The tangential force size and distribution law of the low voltage helical winding are obtained. It tested the reliability of the calculation method through the comparison and analysis of two kinds of modeling. On the basis of this, we studied the influence of helical Angle and axial compression force on the tangential displacement of helical winding .The results show the method is efficient for reducing winding tangential displacement in product design.

关 键 词：螺旋式绕组 切向力 扭矩 螺旋角 轴向预压紧力 切向位移 

分 类 号：TM41[电气工程—电器]