并联电抗器铁心振动的模型实验与仿真研究
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摘要
并联电抗器作为无功补偿设备,补偿电力系统的无功容量。为了保持并联电抗器的电抗值具有良好的线性度,其铁心通常采用多气隙结构,这使得并联电抗器在正常工况下振动幅度较大。为了研究并联电抗器铁心振动的影响因素,本文设计制作了一台并联电抗器试验模型,建立了并联电抗器铁心振动分析的电磁-机械耦合模型。计算得到了不同工况下并联电抗器铁心磁场、麦克斯韦力、振动位移和加速度的空间分布,并将计算结果与实验数据进行了对比。分析了麦克斯韦力和铁心磁致伸缩效应对并联电抗器铁心振动的影响。
As a reactive power compensator,shunt reactor supplies reactive power for the power system. In order to keep the reactance a favorable linearity,the iron core of shunt reactor usually adopts the multi-air gap structure,which gives rise to a larger vibration in normal working condition. To study the influence factors of the iron core vibration for shunt reactor,an experimental model shunt reactor has been fabricated in this paper,also the magnetomechanical model of the iron core vibration for shunt reactor is established. The space distribution of magnetic field,Maxwell force and vibration displacement and acceleration are calculated for the iron core of shunt reactor,after which the data of experiment and simulation are compared. The influence of Maxwell force and magnetostriction on iron core vibration of shunt reactor is analyzed. The result shows that the influence of Maxwell force and magnetostriction on iron core vibration is dependent on the working condition of shunt reactor.
As a reactive power compensator,shunt reactor supplies reactive power for the power system. In order to keep the reactance a favorable linearity,the iron core of shunt reactor usually adopts the multi-air gap structure,which gives rise to a larger vibration in normal working condition. To study the influence factors of the iron core vibration for shunt reactor,an experimental model shunt reactor has been fabricated in this paper,also the magnetomechanical model of the iron core vibration for shunt reactor is established. The space distribution of magnetic field,Maxwell force and vibration displacement and acceleration are calculated for the iron core of shunt reactor,after which the data of experiment and simulation are compared. The influence of Maxwell force and magnetostriction on iron core vibration of shunt reactor is analyzed. The result shows that the influence of Maxwell force and magnetostriction on iron core vibration is dependent on the working condition of shunt reactor.
引文
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[2]郑涛,赵彦杰(Zheng Tao,Zhao Yanjie).超/特高压可控并联电抗器关键技术综述(Overview of key techniques of EHV/UHV controllable shunt reactor)[J].电力系统自动化(Automation of Electric Power Systems),2014,38(7):127-135.
[3]Rossi M,Besnerais J.Vibration reduction of inductors under magnetostrictive and Maxwell forces excitation[J].IEEE Transactions on Magnetics,2015,51(12):1-6.
[4]Shuai P,Biela J.Investigation of acoustic noise sources in medium frequency,medium voltage transformers[A].2014 16th European Conference on Power Electronics and Applications[C].Lappeenranta,Finland,2014.1-11.
[5]Gao Y,Muramatsu K,Fujiwara K,et al.Vibration analysis of a reactor driven by an inverter power supply considering electromagnetism and magnetostriction[J].IEEE Transactions on Magnetics,2009,45(10):4789-4792.
[6]Gao Y,Muramatsu K,Hatim M,et al.Design of a reactor driven by inverter power supply to reduce the noise considering electromagnetism and magnetostriction[J].IEEE Transactions on Magnetics,2010,46(6):2179-2182.
[7]Gao Y,Muramatsu K,Hatim M,et al.The effect of laminated structure on coupled magnetic field and mechanical analyses of iron core and its homogenization technique[J].IEEE Transactions on Magnetics,2011,47(5):1358-1361.
[8]Kameari A.Local force calculation in 3D FEM with edge elements[J].International Journal of Applied Electromagnetics in Materials,1993,3:231-240.
[9]Yan Rongge,Gao Xu,Zhu Lihua,et al.Research on three-dimensional stress distribution of reactor core[J].IEEE Transactions on Applied Superconductivity,2016,26(4):1-4.
[10]杨意妹,祝丽花,王斌,等(Yang Yimei,Zhu Lihua,Wang Bin,et al.).考虑磁致伸缩效应的可控饱和并联电抗器电磁振动分析(Analysis on electromagnetic vibration of controllable saturable reactor considering magnetostrictive effects)[J].电工电能新技术(Advanced Technology of Electrical Engineering and Energy),2016,35(8):40-45.
[11]颜威利,杨庆新,汪友华(Yan Weili,Yang Qingxin,Wang Youhua).电气工程电磁场数值分析(Numerical analysis of electrical engineering electromagnetic field)[M].北京:机械工业出版社(Beijing:China Machine Press),2005.
[12]郭贻诚(Guo Yicheng).铁磁学(Ferromagnetics)[M].北京:北京大学出版社(Beijing:Peking University Press),2014.
[13]张艳丽,王佳音,白保东,等(Zhang Yanli,Wang Jiayin,Bai Baodong,et al.).直流偏磁磁场对硅钢片磁致伸缩特性的影响分析(Influence analysis of DC biased magnetic field on magnetostrictive characteristics of silicon steel sheet)[J].中国电机工程学报(Proceedings of the CSEE),2016,36(15):4299-4307.
[14]Jang P,Choi G.Acoustic noise characteristics and magnetostriction of Fe-Si powder cores[J].IEEE Transactions on Magnetics,2012,48(4):1549-1552.
[15]Belahcen A,Singh D,Rasilo D,et al.Anisotrpopic and strain-dependent model of magnetostriction in electrical steel sheets[J].IEEE Transactions on Magnetics,2015,51(3):1-4.
[16]Li Q,Wang X,Zhang L,et al.Modelling methodology for transformer core vibrations based on the magnetostrictive properties[J].IET Electric Power Applications,2012,6(9):604-610.
[17]Ebrahimi H,Gao Y A.Kameari A,et al.Coupled magneto-mechanical analysis considering permeability variation by stress due to both magnetostriction and electromagnetism[J].IEEE Transactions on Magnetics,2013,49(5):1621-1624.
[18]祝丽花,杨庆新,闫荣格,等(Zhu Lihua,Yang Qingxin,Yan Rongge,et al.).电力变压器铁心磁致伸缩力的数值计算(Numerical calculation of magnetostrictive stress of core in power transformer)[J].变压器(Transformer),2012,(6):9-13.