基于电磁-结构力场耦合的铁芯电抗器振动特性分析及优化方法  

Vibration Characteristic Analysis and Optimization Method of Iron Core Reactor Based on Electromagnetic-structural Force Field Coupling

作　　者：袁发庭 陈步康 陈炜 唐波[1,2] 姬睿氢 YUAN Fating;CHEN Bukang;CHEN Wei;TANG Bo;JI Ruiqing(Hubei Transmission Line Engineering Technology Research Center(Three Gorges University),Yichang 443002,China;College of Electrical and New Energy,Three Gorges University,Yichang 443002,China;Research Institute of Electric Power Science,State Grid Hunan Electric Power Company Limited,Changsha 410007,China)

机构地区：[1]湖北省输电线路工程技术研究中心(三峡大学),宜昌443002 [2]三峡大学电气与新能源学院,宜昌443002 [3]国网湖南省电力有限公司电力科学研究院,长沙410007

出　　处：《高电压技术》2023年第6期2374-2384,共11页High Voltage Engineering

基　　金：湖北省教育厅科学技术研究项目(Q20211212);宜昌市科技计划项目(A21-3-010)。

摘　　要：建立准确的材料磁致伸缩模型是分析铁芯电抗器振动特性的关键。为准确建立硅钢片磁致伸缩模型,基于经典Jiles-Atherton(J-A)磁滞模型和二次畴转模型建立了铁芯材料磁致伸缩模型,提出了基于改进粒子群算法(particle swarm optimization,PSO)与归一化的阻尼最小二乘算法(Levenberg-Marquardt,LM)的混合优化算法,结合实验测量结果,该算法能够准确和快速辨识模型中的5个特征参数。根据软磁材料模型特征参数,构建了考虑磁致伸缩特性的三相干式铁芯电抗器几何模型,分析了铁芯电抗器铁芯振动位移分布。利用中心组合试验设计与有限元仿真相结合的方法,获得了不同气隙结构参数下电抗器的振动位移仿真结果,并建立了能够准确预测铁芯振动位移的正交多项式模型。以电抗器铁芯振动位移最小作为目标函数,在保证电感值基本不变的情况下获得了铁芯最佳气隙长度。优化结果表明,在最佳气隙结构参数下电抗器振动位移减少了10%,电感值变化仅为0.051%,优化方法对于降低铁芯电抗器的振动具有重要的参考意义。Establishing an accurate material magnetostriction model is the key to analyzing the vibration characteristics of iron core reactors.In order to accurately model the magnetostriction of silicon steel sheet,the magnetostriction model of core material is established based on the classical Jiles-Atherton(J-A)hysteresis model and the quadratic domain rotation model,and a hybrid optimization algorithm is proposed based on the combination of improved particle swarm optimization(PSO)and the normalized damped least squares algorithm(Levenberg-Marquardt,LM).Combined with experimental measurement results,the algorithm can accurately and quickly identify the five characteristic parameters in the model.According to the characteristic parameters of soft magnetic material model,the geometric model of three-phase dry core reactor considering magnetostrictive characteristics is constructed,and the core vibration displacement distribution of core reactor is analyzed.The simulation results of the vibration displacement of the reactor with different air gap structure parameters are obtained by combining the central combined experimental design with finite element simulation,and the orthogonal polynomial model that can accurately predict the core vibration displacement is established.The minimum vibration displacement of the reactor core is taken as the objective function,and the optimal air gap length of the core is obtained with the inductance value basically unchanged.The optimization results show that,under the optimal air gap structure parameters,the reactor vibration displacement is reduced by 10%and the inductance value changes by only 0.051%.The optimization method has an important reference significance for reducing the vibration of core reactor.

关 键 词：铁芯电抗器 电磁-结构力场耦合 气隙结构 铁芯振动 正交多项式模型 振动位移 

分 类 号：TM47[电气工程—电器]