70基于负超磁致伸缩效应电抗器减振新方法的研究  

A new vibration reduction method for reactors using NGMM

作　　者：闫荣格 赵路娜 贲彤 周杰 YAN Rongge;ZHAO Luna;BEN Tong;ZHOU Jie(State Key Lab of Reliability and Intelligence of Electrical Equipment,School of Electrical Engineering,Hebei University of Technology,Tianjin 300130,China;State Grid Shandong Heze Power Supply Company,Heze 274000,China)

机构地区：[1]省部共建电工装备可靠性与智能化国家重点实验室河北工业大学电气工程学院,天津300130 [2]国网山东菏泽供电公司,山东菏泽274000

出　　处：《振动与冲击》2018年第19期254-258,共5页Journal of Vibration and Shock

基　　金：国家自然科学基金项目(51777054);省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学)自主研究课题重点项目资助(ERIZZ2018002)

摘　　要：噪声抑制是电抗器制作和应用过程中必须考虑的关键因素,尤其是在高压输电网络。针对电抗器振动噪声的问题,提出了一种利用负超磁致伸缩材料的减振方法。以一台单相铁心电抗器为例,建立电抗器铁心的电磁-机械耦合模型,基于有限元法对磁致伸缩和麦克斯韦力及两者共同作用下的电抗器铁心振动进行定量分析,研究两种力对电抗器振动的影响,得出磁致伸缩和麦克斯韦力对电抗器振动是相互抵消作用的结论。在电抗器气隙处填充负超磁致伸缩材料,利用负超磁致伸缩材料在磁场作用下产生负形变的特性来抵消电抗器原有的机械变形。对比两种不同填充材料电抗器的振动位移,分析结果表明,电抗器的振动位移减小了13%,为以后低噪声电抗器的设计提供理论支持。Noise suppression is one of key factors which must be considered in manufacture and application of reactors,especially,in high voltage transmission networks.In order to solve problems of reactors’vibration and noise,a vibration reduction method using negative giant magnetostrictive material(NGMM)was proposed.A single-phase iron-core reactor was taken as an example,and the reactor iron-core’s electromagnetic-mechanical coupled model was established.Based on the finite element method,the quantitative analysis was conducted to study vibrations of the reactor iron-core under magnetostrictive effect,Maxwell force and their combined action,respectively.The result showed that influence of magnetostrictive effect on the reactor vibration counteracts that of Maxwell force on the reactor vibration.Then NGMM was filled into air gaps of the reactor.The negative deformation produced by the material under the action of magnetic field was used to eliminate the original mechanical deformation of the reactor.The vibration displacements of the reactor with two different filled materials were compared,the results showed that the reactor’s vibration displacement is reduced by 13%;this study provides a theoretical support for the later design of low noise reactors.

关 键 词：铁心电抗器 电磁-机械耦合模型 负超磁致伸缩材料 电磁振动 

分 类 号：TM4[电气工程—电器]