基于有限元的GIS水平母线外壳振动仿真研究
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摘要
气体绝缘金属封闭开关设备(GIS)在运行中因电磁力导致的异常机械振动时有发生。为研究三相共体水平GIS母线外壳的受力与振动特性,使用有限元分析软件,建立三相工频电流源激励下的水平GIS母线模型,进行稳态电磁场分析,得到外壳所受电磁力,再建立金属外壳的结构动力学模型,求解电磁力激励下的外壳振动加速度响应。结果表明,金属外壳受到周期性变化的电磁力作用,频率为激励源频率的两倍。在该电磁力的作用下,外壳产生机械振动,外壳两侧中线节点的振动加速度显著大于其他位置,其变化频率与电动力频率一致。在三相共体GIS试验平台进行工频电流激励下的外壳振动加速度信号检测,通过分析外壳不同位置的信号强度与加速度频率,验证了仿真模型的准确性。
Abnormal mechanical vibration of gas-insulated metal-enclosure switchgear(GIS)is caused occasionally by electromagnetic force. In this study, a finite element method(FEM)software was used to investigate the electromagnetic force and vibration characteristics of the three-phase-enclosed horizontal GIS bus shell. Firstly,a horizontal GIS bus model under three-phase power-frequency current excitation was established, steady electromagnetic analysis was conducted,and the electromagnetic force the shell suffered was obtained. Secondly,a structural dynamic model of the metal shell was also established to obtain the shell's vibration acceleration response under the electromagnetic force. Results show that the shell suffers periodical electromagnetic force with the frequency twice of the excitation frequency. Under the electromagnetic force,mechanical vibration of the shell starts,and the vibration acceleration of the nodes on the mid-line of both sides of the shell is more remarkable compared with that at other locations. The vibration acceleration's frequency is the same with that of the electromagnetic force. Experiment was conducted on a three-phase enclosed GIS platform to detect the metal shell's vibration acceleration signal under power frequency current excitation. Analyses on the signals intensity at different locations and the vibration acceleration frequency verified the accuracy of the structural dynamic model.
Abnormal mechanical vibration of gas-insulated metal-enclosure switchgear(GIS)is caused occasionally by electromagnetic force. In this study, a finite element method(FEM)software was used to investigate the electromagnetic force and vibration characteristics of the three-phase-enclosed horizontal GIS bus shell. Firstly,a horizontal GIS bus model under three-phase power-frequency current excitation was established, steady electromagnetic analysis was conducted,and the electromagnetic force the shell suffered was obtained. Secondly,a structural dynamic model of the metal shell was also established to obtain the shell's vibration acceleration response under the electromagnetic force. Results show that the shell suffers periodical electromagnetic force with the frequency twice of the excitation frequency. Under the electromagnetic force,mechanical vibration of the shell starts,and the vibration acceleration of the nodes on the mid-line of both sides of the shell is more remarkable compared with that at other locations. The vibration acceleration's frequency is the same with that of the electromagnetic force. Experiment was conducted on a three-phase enclosed GIS platform to detect the metal shell's vibration acceleration signal under power frequency current excitation. Analyses on the signals intensity at different locations and the vibration acceleration frequency verified the accuracy of the structural dynamic model.
引文
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[9]尹新芳.诊断接触不良的新设备[J].高压电器,1990,33(3):61.YIN Xinfang.New equipment for poor contact diagnosis[J].High Voltage Apparatus,1990,33(3):61.
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[13]杨哲,邢敬,高阳,等.GIS设备异响振动信号特性及检测系统研究[J].山东工业技术,2015(21):216-217.YANG Zhe,XING Jing,GAO Yang,et al.Research5220186on characteristic and detection system of abnormal sound vibration signal of GIS equipment[J].Shandong Industrial Technology,2015(21):216-217.
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[15]孙建宁,吴衍伟.GIS外壳异常振动危害和解决方法探讨[J].科技资讯,2011(18):43-43.SUN Jianning,WU Yanwei.Discussion on the method of solving the abnormal vibration of shell[J].Science&Technology Information,2011(18):43-43.
[16]李凯,许洪华,陈冰冰,等.GIS振动机理及固有频率研究[J].电测与仪表,2017,54(3):14-18.LI Kai,XU Honghua,CHEN Bingbing,et al.Research on vibration mechanism and natural frequency in GIS[J].Electrical Measurement&Instrumentation,2017,54(3):14-18.
[17]郝金鹏.外壳振动信号在GIS故障诊断中的应用研究[D].北京:华北电力大学,2016.HAO Jinpeng.The applied research of shell vibration signal in GIS fault diagnosis[D].Beijing:North China Electric Power University,2016.
[18]杨瑞棠.GIS振动的分析[J].华通技术,2001(2):11-14.YANG Ruitang.Analysis on the vibration of GIS[J].Huatong Technology,2001(2):11-14.
[19]陆启宇,田昊洋,高凯.GIS电压互感器振动异常的检测与诊断[J].上海电力,2015(6):15-18.LU Qiyu,TIAN Haoyang,GAO Kai.Detection and diagnosis of abnormal vibration of GIS voltage transformer[J].Shanghai Electric Power,2015(6):15-18.
[20]柳菲,王国亮,孙璐.GIS异响的振动信号特性[J].电子技术与软件工程,2015(12):137-137.LIU Fei,WANG Guoliang,SUN Lu.Vibration signal characteristics of GIS abnormal sound[J].Electronic Technology and Software Engineering,2015(12):137-137.
[21]YANG J,LIU Y,HU D,et al.Transient vibration study of GIS bus based on FEM[C]//Power and Energy Engineering Conference.[S.l]:IEEE,2016:1092-1095.
[22]舒乃秋,关向雨,康兵,等.基于场路耦合有限元的三相共箱气体绝缘母线暂态电动力分析[J].电网技术,2015,39(5):1456-1462.SHU Naiqiu,GUAN Xiangyu,KANG Bing,et al.Dynamic electromagnetic force analysis of three phase enclosure type GIB based on Field-Circuit coupling theory[J].Power System Technology,2015,39(5):1456-1462.
[23]OHSHITA Y,HASHIMOTO A,KUROSAWA Y.A diagnostic-technique to detect abnormal conditions of(下转第59页)546contacts measuring vibrations in metal enclosures of gas insulated switchgear[J].IEEE Transactions on Power Delivery,1989,4(4):2090-2094.
[24]CHARBKCAW N,SUWANASRI T,BUNYAGUL T.Mechanical defect detection of SF6high voltage circuit breaker using wavelet based vibration signal analysis[C]//5th International Conference on Electrical Engineering/Electronics,Computer,Telecommunications and Information Technology.[S.l.]:IEEE,2008:901-904.(上接第52页)
[25]RUNDE M,LILLEVIK O,LARSEN V,et al.Condition assessment of contacts in gas-insulated substations[J].IEEE Transactions on Power Delivery,2004,19(2):609-617.
[2]李军浩,车斌,林敏,等.振荡型雷电冲击电压下SF6气体中悬浮电位缺陷的局部放电特性研究[J].绝缘材料,2014(4):62-65.LI Junhao,CHE Bin,LIN Min,et al.Partial discharge characteristics of floating potential defect in SF6gas under oscillating lightning impulse voltage[J].Insulating Materials,2014(4):62-65.
[3]舒印彪,张文亮.特高压输电若干关键技术研究[J].中国电机工程学报,2007,31(27):1-6.SHU Yinbiao,ZHANG Wenliang.Research of key technologies for UHV transmission[J].Proceedings of the CSEE,2007,31(27):1-6
[4]张乔根,汪沨,邱毓昌.六氮化硫混合气体绝缘的发展动向[J].绝缘材料,2002,35(5):31-34.ZHANG Qiaogen,WANG Feng,QIU Yuchang.Development trend of SF6mixed gas insulation[J].Insulating Materials,2002,35(5):31-34.
[5]LI J H,ZHANG L,HU D G,et al.Breakdown characteristics of SF6in quasi-uniform field under oscillating lightning impulse voltages[J].IEEE Transactions on Dielectrics and Electrical Insulation,2017,24(2):915-922.
[6]KUSUMOTO S,ITOH S,TSUCHIYA Y,et al.Diagnostic technique of gas insulated substation by partial discharge detection[J].IEEE Transactions on Power Apparatus and Systems,1980,PAS-99(4):1456-1465.
[7]王思华.GIS结构分析及其存在问题的探讨[J].制造经验,2006(2):26-28.WANG Sihua.Analysis of the structure of GIS and its existing problems[J].Manufacturing Experience,2006(2):26-28.
[8]高林蔚,李东.220 kV GIS结构特点、安装及调试[J].上海电力,1996(6):10-14.GAO Linyu,LI Dong.Structural characteristics,installation and commissioning of 220 kV GIS[J].Shanghai Electric Power,1996(6):10-14.
[9]尹新芳.诊断接触不良的新设备[J].高压电器,1990,33(3):61.YIN Xinfang.New equipment for poor contact diagnosis[J].High Voltage Apparatus,1990,33(3):61.
[10]DING P,YAN Z H,MA F Y,et al.The study of vibration diagnosis method for GIS[J].Applied Mechanics&Materials,2013(295-298):2429-2432.
[11]程林.特高压GIS/HGIS设备振动诊断方法研究[J].电力建设,2009,30(7):17-19.CHENG Lin.Research on vibration diagnosis method of ultra high voltage GIS/HGIS equipment[J].Power Construction,2009,30(7):17-19.
[12]MA Qixiao,DING Dengwei,XUE Zhihang,et al.Abnormal vibration analysis of GIS based on time frequency detection[C]//International Conference on Condition Monitoring and Diagnosis(CMD).[S.l.]:IEEE,2016:566-569.
[13]杨哲,邢敬,高阳,等.GIS设备异响振动信号特性及检测系统研究[J].山东工业技术,2015(21):216-217.YANG Zhe,XING Jing,GAO Yang,et al.Research5220186on characteristic and detection system of abnormal sound vibration signal of GIS equipment[J].Shandong Industrial Technology,2015(21):216-217.
[14]高阳,于杰承,吴伟晴.GIS异响的振动信号检测方法研究综述[J].山东工业技术,2017(3):251-251.GAO Yang,YU Jiecheng,WU Weiqing.Survey of vibration signal detection methods for GIS abnormal sound[J].Shandong Industrial Technology,2017(3):251-251.
[15]孙建宁,吴衍伟.GIS外壳异常振动危害和解决方法探讨[J].科技资讯,2011(18):43-43.SUN Jianning,WU Yanwei.Discussion on the method of solving the abnormal vibration of shell[J].Science&Technology Information,2011(18):43-43.
[16]李凯,许洪华,陈冰冰,等.GIS振动机理及固有频率研究[J].电测与仪表,2017,54(3):14-18.LI Kai,XU Honghua,CHEN Bingbing,et al.Research on vibration mechanism and natural frequency in GIS[J].Electrical Measurement&Instrumentation,2017,54(3):14-18.
[17]郝金鹏.外壳振动信号在GIS故障诊断中的应用研究[D].北京:华北电力大学,2016.HAO Jinpeng.The applied research of shell vibration signal in GIS fault diagnosis[D].Beijing:North China Electric Power University,2016.
[18]杨瑞棠.GIS振动的分析[J].华通技术,2001(2):11-14.YANG Ruitang.Analysis on the vibration of GIS[J].Huatong Technology,2001(2):11-14.
[19]陆启宇,田昊洋,高凯.GIS电压互感器振动异常的检测与诊断[J].上海电力,2015(6):15-18.LU Qiyu,TIAN Haoyang,GAO Kai.Detection and diagnosis of abnormal vibration of GIS voltage transformer[J].Shanghai Electric Power,2015(6):15-18.
[20]柳菲,王国亮,孙璐.GIS异响的振动信号特性[J].电子技术与软件工程,2015(12):137-137.LIU Fei,WANG Guoliang,SUN Lu.Vibration signal characteristics of GIS abnormal sound[J].Electronic Technology and Software Engineering,2015(12):137-137.
[21]YANG J,LIU Y,HU D,et al.Transient vibration study of GIS bus based on FEM[C]//Power and Energy Engineering Conference.[S.l]:IEEE,2016:1092-1095.
[22]舒乃秋,关向雨,康兵,等.基于场路耦合有限元的三相共箱气体绝缘母线暂态电动力分析[J].电网技术,2015,39(5):1456-1462.SHU Naiqiu,GUAN Xiangyu,KANG Bing,et al.Dynamic electromagnetic force analysis of three phase enclosure type GIB based on Field-Circuit coupling theory[J].Power System Technology,2015,39(5):1456-1462.
[23]OHSHITA Y,HASHIMOTO A,KUROSAWA Y.A diagnostic-technique to detect abnormal conditions of(下转第59页)546contacts measuring vibrations in metal enclosures of gas insulated switchgear[J].IEEE Transactions on Power Delivery,1989,4(4):2090-2094.
[24]CHARBKCAW N,SUWANASRI T,BUNYAGUL T.Mechanical defect detection of SF6high voltage circuit breaker using wavelet based vibration signal analysis[C]//5th International Conference on Electrical Engineering/Electronics,Computer,Telecommunications and Information Technology.[S.l.]:IEEE,2008:901-904.(上接第52页)
[25]RUNDE M,LILLEVIK O,LARSEN V,et al.Condition assessment of contacts in gas-insulated substations[J].IEEE Transactions on Power Delivery,2004,19(2):609-617.