变电站穿墙套管板的电磁仿真及优化方法
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摘要
针对现有变电站穿墙套管板存在的涡流损耗大、温升明显的问题,提出优化穿墙套管支撑板磁感应强度大小和均匀性的思路。在ANSYS软件中建立穿墙套管及其周围固定金具的电磁场仿真模型,分别研究穿墙套管板开槽及槽口尺寸、设置永磁体阵列等结构因素对其内部磁感应强度的影响,并结合仿真结果分析涡流损耗分布情况。研究结果表明:在穿墙套管板上开槽、设置永磁体阵列对其内部的磁感应强度具有较强的抑制性能;对于所建模型,槽体数量为4,槽口大小为5 mm,并设置永磁体阵列时,抑制效果最佳。
Aiming at problems of current substation wall bushing plates such as large eddy loss and apparent temperature rise, this paper propose ideas of optimizing magnetic induction intensity and uniformity of the wall bushing support plate. In ANSYS software, it establishes the electromagnetic field simulation model for the wall bushing and its surrounding fixed fittings and respectively studies effects of structural factors including slotting and slotting size and arrangement of permanent magnet array on internal magnetic induction intensity in the wall bushing. Combining simulation results, it analyzes distribution of eddy loss. The research result indicates that slotting on the wall bushing and arrangement of permanent magnetic array has stronger inhibition effect on internal magnetic induction intensity, and for the built model, inhibition effect is the best as there are four slot bodies with 5 mm slotting size and the permanent magnetic array is arranged.
Aiming at problems of current substation wall bushing plates such as large eddy loss and apparent temperature rise, this paper propose ideas of optimizing magnetic induction intensity and uniformity of the wall bushing support plate. In ANSYS software, it establishes the electromagnetic field simulation model for the wall bushing and its surrounding fixed fittings and respectively studies effects of structural factors including slotting and slotting size and arrangement of permanent magnet array on internal magnetic induction intensity in the wall bushing. Combining simulation results, it analyzes distribution of eddy loss. The research result indicates that slotting on the wall bushing and arrangement of permanent magnetic array has stronger inhibition effect on internal magnetic induction intensity, and for the built model, inhibition effect is the best as there are four slot bodies with 5 mm slotting size and the permanent magnetic array is arranged.
引文
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[18]DENG Song,HAN Xinghui,QIN Xunpeng,et al.Subsurface crack propagation under rolling contact fatigue in bearing ring[J].Science China(Technological Sciences),2013,56(10):2422-2432.
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[20]BURAIS N,FOGGIA A,NICOLAS A,et al.Numerical solution of eddy currents problems including moving conducting parts[J].IEEE Transactions on Magnetics,1984,20(5):1995-1997.
[2]赵水忠,徐重力,单俊.运行变电站高层软母线更换施工技术研究[J].浙江电力,2016,35(11):7-9.ZHAO Shuizhong,XU Zhongli,SHAN Jun.Research on construction technology of high-level flexible conductor replacement at operating substation[J].Zhejiang Electric Pow er,2016,35(11):7-9.
[3]褚双伟,华奎,卢明,等.特高压线路大吨位绝缘子挂网运行情况分析[J].广东电力,2018,31(4):27-33.CHU Shuangw ei,HUA Kui,LU M ing,et al.Analysis on operation of large tonnage insulators on UHV transmission lines[J].Guangdong Electric Pow er,2018,31(4):27-33.
[4]周刚,车江嵘,徐伟,等.变电所主变低压侧穿墙套管新型底板的研制[J].电气开关,2017(6):43-52.ZHOU Gang,CHE Jiangrong,XU Wei,et al.Development of new floor of substation transformer low voltage side w all bushing[J].Electric Switchgear,2017(6):43-52.
[5]MOHAMMED E,HUSSEIN A.Risk assessment of desert pollution on composite high voltage insulators[J].Journal of Advanced Research,2014(5):569-576.
[6]SUN Shumn,CHENG Yan,SU Xin.Electric field analysis with space charge effects of±1 000 k V DC w all bushing[J].Advanced M aterials Research,2014,3383(1008):598-602.
[7]LI Hongwei,PAN Zhiyuan,WANG Jing,et al.Insulation optimization of±1 000 k V DC w all bushing[J].Advanced M aterials Research,2015,3701(1070):1016-1020.
[8]苏超,刘振声,李黎,等.220 k V架空输电线路下工频电场的电磁感应仿真分析[J].广东电力,2018,31(1):106-112.SU Chao,LIU Zhensheng,LI Li,et al.Simulation analysis on electromagnetic induction of pow er frequency electric field under220 k V overhead transmission lines[J].Guangdong Electric Power,2018,31(1):106-112.
[9]DAI Liming,LUO Longfu.Analysis of nonlinear electric field of HVDC w all bushing w ith a finite element approach[J].Open Physics,2005,3(4):581-590.
[10]李克.220 k V穿墙套管末屏烧损的原因分析及故障处理[J].电力设备,2005(7):67-69.LI Ke.Cause analysis and troubleshooting of 220 k V w all bushing terminal screen burning[J].Electric Sw itchgear,2005(7):67-69.
[11]AYMAN A,HUSSEIN A.Probabilistically based risk of exposure to pow er line magnetic fields[J].Electric Pow er Components and Systems,2009(11):1241-1259.
[12]刘兴旺.主变10(6)k V穿墙套管发热原因分析及改进[J].上海电力,1999(5):33-34.
[13]崔翔,唐和香,焦重庆,等.高压直流换流站阀厅穿墙套管封堵材料的涡流损耗和屏蔽效能分析[J].华北电力大学学报,2008,35(6):13-16.CUI Xiang,TANG Hexiang,JIAO Chongqing,et al.Analysis of eddy current losses and shielding effectiveness in the valve hall blocking material of HVDC converter station[J].Journal of North China Electric Pow er University(Natural Science Edition),2008,35(6):13-16.
[14]鄢来君,张颖.大电流封闭母线温升计算[J].高电压技术,2008,34(1):201-203.YAN Laijun,ZHANG Yin.Calculation of temperature rise of large current closed busbar[J].High Voltage Engineering,2008,34(1):201-203.
[15]肖逸锋,贺跃辉,丰平,等.碳含量对缺碳硬质合金组织和性能的影响[J].中国有色金属学报,2007,17(1):39-44.XIAO Yifeng,HE Yuehui,FENG Ping,et al.Effects of carbon content on microstructure and properties of carbon-deficient cemented carbides[J].The Chinese Journal of Nonferrous M etals,2007,17(1):39-44.
[16]CHEN Lei,WEN Weidong,CUI Haitao.Generalization of Hill's yield criterion to tension-compression asymmetry materials[J].Science China(Technological Sciences),2013,56(1):89-97.
[17]LIU Wentao,ZHANG Yun,FENG Zhijing,et al.Effects of stick-slip on stress intensity factors for subsurface short cracks in rolling contact[J].Science China(Technological Sciences),2013,56(10):2413-2421.
[18]DENG Song,HAN Xinghui,QIN Xunpeng,et al.Subsurface crack propagation under rolling contact fatigue in bearing ring[J].Science China(Technological Sciences),2013,56(10):2422-2432.
[19]SERGIO B,ROBERT R.Skin and proximity effect in nonmagnetic conductors[J].IEEE Transaction on Education,2003,46(3):368-372.
[20]BURAIS N,FOGGIA A,NICOLAS A,et al.Numerical solution of eddy currents problems including moving conducting parts[J].IEEE Transactions on Magnetics,1984,20(5):1995-1997.
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