磁控电抗器铁心的磁力耦合有限元仿真与分析  

Finite Element Simulation and Analysis of Magnetic-force Coupling of Core of Magnetically Controlled Reactor

作　　者：郑一鸣 钱平 李晨 杨圣利 蔺家骏 ZHENG Yiming;QIAN Ping;LI Chen;YANG Shengli;LIN Jiajun(State Grid Zhejiang Electric Power Co.,Ltd.,Zhejiang Electric Power Research Institute,Hangzhou 311400,China;Hangzhou Yinhu Electric Equipment Co.,Ltd.,Hangzhou 311400,China)

机构地区：[1]国网浙江省电力有限公司浙江省电力科学研究院,杭州311400 [2]杭州银湖电气设备有限公司,杭州311400

出　　处：《电力电容器与无功补偿》2022年第5期50-56,共7页Power Capacitor & Reactive Power Compensation

摘　　要：磁控电抗器是一种具有优良工作特性的无功补偿设备,能够平滑而连续地调节电抗值改变其容量,在电力系统中得到了广泛的应用。由于磁控电抗器的工作方式是交直流共同激励和铁心磁阀结构的特殊性,铁心的振动噪声问题较为严重,这也成为了制约磁控电抗器发展的主要因素。本文基于有限元软件分布建立二维和三维铁心磁场-机械耦合模型,考虑磁致伸缩影响,针对集中式磁阀结构,完成铁心不同饱和程度下磁场和振动位移的数值计算,得到并比较二维和三维铁心的磁通密度和振动位移分布情况,为磁控电抗器铁心振动噪声的分析提供理论依据和计算方法。Magnetically controlled reactor is a kind of reactive power compensation equipment with excellent working characteristics,which can smoothly and continuously adjust the reactance and change its capacity,and has been widely used in power systems.As the working mode of the magnetically control reactor is AC and DC co-excitation and the core magnetic valve structure is special,the vibration and noise problem of the core is more serious,which has also become the main factor constraining the development of the magnetically controlled reactor.In this paper,the two-dimensional and three-dimensional core magnetic field-mechanical coupling models based on the distribution of finite element software is set up.With consideration of magnetostriction influence and as for the centralized magnetic valve structure,the numerical calculation of the magnetic field and vibration displacement of the iron core under different saturation degrees is completed,and the magnetic flux density and vibration displacement distribution of the two-dimensional and three-dimensional iron cores are obtained and compared,which provide a theoretical basis and calculation method for the analysis of the vibration and noise of the magnetically controlled reactor core.

关 键 词：磁控电抗器 直流偏磁 磁致伸缩 振动 有限元仿真 

分 类 号：TM47[电气工程—电器]