|本期目录/Table of Contents|

[1]汪金刚,等. 直流偏磁下的变压器振动仿真与试验[J].电机与控制学报,2015,19(01):58-67.[doi:10. 15938/j. emc.2015.01.009]
 WANG Jin-gang MAO Kai DUAN Xu YANG Yong-ming LI Ke. Simulation and test of transformer vibration under DC bias[J].,2015,19(01):58-67.[doi:10. 15938/j. emc.2015.01.009]
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
19
期数:
2015年01
页码:
58-67
栏目:
出版日期:
2015-01-15

文章信息/Info

Title:
 Simulation and test of transformer vibration under DC bias
作者:
 汪金刚 1毛凯1段旭2杨永明 1李坷 1
 1.重庆大学 输配电装备及系统安全与新技术国家重点实验室,重庆400044 ;
2.国网山东省电力公司济南供电公司,山东济南250012
Author(s):
 WANG Jin-gang 1MAO Kai 1DUAN Xu 2YANG Yong-ming 1LI Ke 1
 1. State Key Laboratory of Power Transmission Equipment&System Security and New Technology,Chongqing University,
Chongqing 400044 , China; 2. State Grid Shandong Electric Power Co. Jinan Power Supply Company , Jinan 250012,China
关键词:
 电磁场一结构力场耦合:直流偏磁:变压器振动:铁心:绕组
Keywords:
 Keywords:electromagnetic一structure coupling fieldDC biastransformer vibrationcorethe winding
分类号:
TM 743
DOI:
10. 15938/j. emc.2015.01.009
文献标志码:
A
摘要:
 摘要:针对变压器实际运行中经常会出现振动异常现象的问题,结合变压器铁心和绕组的振动机
理,给出了变压器铁心和绕组所受电磁力方程和位移方程。利用COMSOL电磁场模块中的瞬态电
流源建立电场模型,然后选择感应电流单元以电场模型计算结果作为激励源建立磁场模型,实现第
一次电磁场的耦合建模。利用结构力学模块中实体应力应变部分建立结构力场模型,将电磁场耦
合计算出的电磁力结果作为载荷加到力场模型中,实现第二次耦合,并最终得到发生直流偏磁时变
压器内部磁通密度、机械应力分布、张力分布以及位移场分布的变化规律。通过搭建变压器振动试
验平台,验证了铁心振动仿真模型、绕组振动仿真模型的正确性。
Abstract:
 Abstract:Aiming at the abnormal vibration problem when a transformer actually operates and combining
the transformer core with winding vibration mechanism, the electromagnetic force equations and displace-
ment equations of transformer core and winding were provided. An electric field model was established by
transient current source in COMSOL electromagnetic modules. A magnetic field model was established by
the induced current unit where computation of field module was excitation source. Based on this,first
coupled modeling of electromagnetic fields was established. The second coupled modeling of electromag-
netic fields was set up when structure field module was established through the physical stress and strain
section of structural mechanics module and the electromagnetic coupling electromagnetic force calculated
as a result of the load applied to the force field model. At last, inside magnetic flux density of transform-
er, mechanical stress distribution,tension distribution and displacement distribution change rule under
the DC bias influence were investigated. The vibration simulation models of core and winding are verified
by huildin} test platform.

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备注/Memo

备注/Memo:
 基金项目:国家自然科学基金(51207175,51247008)
更新日期/Last Update: 2015-07-21