输电塔-线体系的舞动及风振控制
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摘要
输电塔-线体系具有高柔特点,风振作用显著,为了研究输电塔-线体系的舞动机理和优化输电塔风振控制方案,基于ANSYS建立了输电塔-导地线-绝缘串的塔线耦合体系非线性有限元模型,提出了采用重启动技术进行覆冰导线的水平、竖向、扭转3方向舞动和输电塔风振分析的方法;编制了风速场模拟程序,进行了输电塔-线耦合体系的舞动及风振仿真;同时进行了4种铅芯橡胶阻尼器布置方案对输电塔振动控制计算。通过计算分析得到了输电塔-线体系的3方向舞动的振幅和输电塔的内力响应,对输电塔的铅芯橡胶阻尼器布置方案进行了优化。结果表明,输电塔-线体系在风振作用下塔线耦合作用显著,塔-线耦合体系优于简化模型以及铅芯橡胶阻尼器对输电塔-线体系风振有良好的控制效果并且安装在塔身上半部分效果显著。
The transmission tower-line coupling system has the properties of high flexibility,and significant vibration of transmission tower system under wind loads may cause many inverted tower accidents,so it is important to research the wind-induced vibration control for transmission tower-line system.To study the galloping behavior of the transmission tower-line and to optimize tower wind-induced vibration control scheme,the finite element analysis program ANSYS was used to model the nonlinear behavior of transmission tower-line coupling system including transmission tower-cable-insulator,and the restarting technology was proposed to solve the vertical,horizontal and torsion galloping of transmission conductors and wind-induced vibration of transmission towers.Meanwhile,a program of wind velocity fields was compiled,and galloping of a transmission tower line coupling system was simulated to obtain the amplitude of the conductors and the internal forces of the transmission towers.Moreover,four proposals of lead viscoelastic dampers(LVDs) layout were described.The displacement and inter force of the transmission tower with LVDs were compared to those without LVDs.Finally,the optimum scheme of the wind-induced vibration effect under the four proposals of LVDs layout was reached.The conclusions can be drawn that the transmission tower-line system,superior to the tower model,has the properties of high tower line coupling clearly,so it is necessary to consider the transmission lines and the tower-line coupling model;the effect of the wind-induced vibration control under the LVDs layout is significant and the best layout location of the LVDs is the upper part of the tower.
The transmission tower-line coupling system has the properties of high flexibility,and significant vibration of transmission tower system under wind loads may cause many inverted tower accidents,so it is important to research the wind-induced vibration control for transmission tower-line system.To study the galloping behavior of the transmission tower-line and to optimize tower wind-induced vibration control scheme,the finite element analysis program ANSYS was used to model the nonlinear behavior of transmission tower-line coupling system including transmission tower-cable-insulator,and the restarting technology was proposed to solve the vertical,horizontal and torsion galloping of transmission conductors and wind-induced vibration of transmission towers.Meanwhile,a program of wind velocity fields was compiled,and galloping of a transmission tower line coupling system was simulated to obtain the amplitude of the conductors and the internal forces of the transmission towers.Moreover,four proposals of lead viscoelastic dampers(LVDs) layout were described.The displacement and inter force of the transmission tower with LVDs were compared to those without LVDs.Finally,the optimum scheme of the wind-induced vibration effect under the four proposals of LVDs layout was reached.The conclusions can be drawn that the transmission tower-line system,superior to the tower model,has the properties of high tower line coupling clearly,so it is necessary to consider the transmission lines and the tower-line coupling model;the effect of the wind-induced vibration control under the LVDs layout is significant and the best layout location of the LVDs is the upper part of the tower.
引文
[1]Wang Jeff.Overhead transmission line vibration and galloping[C]∥2008 International Conference on High Voltage Engineering and Ap-plication.Chongqing,China:Chongqing University,2008:120-123.
[2]蒋兴良,孙才新,王少华.输电线路导线舞动的国内外研究现状[J].高电压技术,2005,31(10):11-14.JIANG Xing-liang,SUN Cai-xin,WANG Shao-hua.Study sta-tus of conductor galloping on transmission line[J].High Volt-age Engineering,2005,31(10):11-14.
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[11]楼文娟,孙珍茂,吕翼.扰流防舞器与气动力阻尼片的防舞效果[J].电网技术,2010,34(2):200-204.LOU Wen-juan,SUN Zhen-mao,L Yi.Anti-gallopingeffects of air flow spoiler and aerodynamic damping board[J].Power System Technology,2010,34(2):200-204.
[12]孙珍茂,楼文娟.覆冰输电导线舞动及防舞效果分析[J].振动与冲击,2010,29(5):141-146.SUN Zhen-mao,LOU Wen-juan.Analysis of iced transmissionline galloping and effect of anti-galloping[J].Journal of Vibra-tion and Shock,2010,29(5):141-146.
[13]邓洪洲,朱松晔,陈亦,等.大跨越输电塔线体系风振控制研究[J].建筑结构学报,2003,24(4):60-64.DENG Hong-zhou,ZHU Song-ye,CHEN Yi,et al.Study onwind-induced vibration control of long span transmission linesystem[J].Journal of Building Structures,2003,24(4):60-64.
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[16]李黎,尹鹏.大跨越输电塔-线体系风振控制研究[J].工程力学,2008,25(2):213-229.LI Li,YIN Peng.The research on wind-induced vibration con-trol for big-span electrical transmission tower-line system[J].Engineering mechanics,2008,25(2):213-229.
[17]Jayaraman H B,Knudson W C A.A Curved element for the a-nalysis of cable structures[J].Computers and Structures,1981,14(3/4):325-333.
[18]Cao Huajin,Li Li,Chen Yuankun,et.al.Research on initialform-finding and galloping of ice-coated transmission conduc-tors[C]∥IEEE Computer Society,2010 International Confer-ence on Computer and Communication Technologies in Agricul-ture Engineering.Chengdu,China:IEEE,2010:113-116.
[19]尹鹏,李黎,梁政平.粘弹铅芯阻尼器在控制输电塔风振反应中的应用[J].振动与冲击,2007,26(8):1-4.YIN Peng,LI li,LIANG Zheng-ping.Wind-induced vibrationcontrol for electrical transmission towers by using lead viscoe-lastic dampers[J].Journal of Vibration and Shock,2007,26(8):1-4.
[20]Matsumoto N,Shiraishi M,Kitazawa,et al.Aerodynamic be-havior of inclined circular cylinders-cable aerodynamics[J].Journal of Wind Engineering and Industrial Aerodynamics,1990,33(1/2):63-72.
[21]李万平.覆冰导线群的动态气动力特性[J].空气动力学学报,2000,18(4):413-420.LI Wan-ping.Dynamic aerodynamic characteristics of the gal-loping of bundled iced power transmission lines[J].Acta Aero-dynamica Sinica,2000,18(4):413-420.
[22]李黎,陈元坤,叶志雄,等.架空输电线微风振动的室内模拟试验[J].华中科技大学学报(自然科学版),2010,38(8):99-102.LI Li,CHEN Yuan-kun,YE Zhi-xiong,et al.Indoor simula-tion tests for the aeolian vibration of overhead transmissionlines[J].Journal of Huazhong University of Science and Tech-nology(Natural Science Edition),2010,38(8):99-102.
[23]陈勇.风荷载模拟及风振时程分析[D].杭州:浙江大学,1997.CHEN Yong.Simulated wind loads and wind-time analysis[D].Hangzhou,China:Zhejiang University,1997.
[2]蒋兴良,孙才新,王少华.输电线路导线舞动的国内外研究现状[J].高电压技术,2005,31(10):11-14.JIANG Xing-liang,SUN Cai-xin,WANG Shao-hua.Study sta-tus of conductor galloping on transmission line[J].High Volt-age Engineering,2005,31(10):11-14.
[3]Den Hartog J P.Transmission line vibration due to sleet[J].Transactions of the American Institute of Electrical Engineers,1932,51(4):1074-1076.
[4]Nigol O,Buchan P G.Conductor galloping part I den hartogmechanism[J].IEEE Transmission on Power Apparatus andSystems,1981,100(2):699-707.
[5]Yu P,Shah A H,Popplewell N.Inertially coupled galloping oficed conductors[J].Journal of Applied Mechanics,1992,59(1):140-145.
[6]Yu P,Popplewell N,Shah A H.Instability trends of inertiallycoupled galloping:Part II:Periodic vibrations[J].Journal ofSound and Vibration,1995,183(4):679-691.
[7]Desai Y M,Yu P,Popplewell N,et al.Finite element model-ling of transmission line galloping[J].Computer&Structure,1995,57(3):407-420.
[8]Yu P,Desai Y M,Shah A H,et al.Three degrees-of-freedommodel for galloping,part I:formulation[J].Journal of Engi-neering Mechanics,1993,119(12):2404-2425.
[9]郭应龙,李国兴,尤传永.输电线路舞动[M].北京:中国电力出版社,2002.GUO Ying-long,LI Guo-xing,YOU Chuan-yong.Galloping oftransmission conductor[M].Beijing,China:China ElectricPower Press,2002.
[10]何锃,赵高煜.分裂导线扭转舞动分析的动力学建模[J].工程力学,2001,18(2):126-134.HE Zeng,ZHAO Gao-yu.On galloping of bundled conductorsin an overhead transmission line with large torsional motion[J].Engineering Mechanics,2001,18(2):126-134.
[11]楼文娟,孙珍茂,吕翼.扰流防舞器与气动力阻尼片的防舞效果[J].电网技术,2010,34(2):200-204.LOU Wen-juan,SUN Zhen-mao,L Yi.Anti-gallopingeffects of air flow spoiler and aerodynamic damping board[J].Power System Technology,2010,34(2):200-204.
[12]孙珍茂,楼文娟.覆冰输电导线舞动及防舞效果分析[J].振动与冲击,2010,29(5):141-146.SUN Zhen-mao,LOU Wen-juan.Analysis of iced transmissionline galloping and effect of anti-galloping[J].Journal of Vibra-tion and Shock,2010,29(5):141-146.
[13]邓洪洲,朱松晔,陈亦,等.大跨越输电塔线体系风振控制研究[J].建筑结构学报,2003,24(4):60-64.DENG Hong-zhou,ZHU Song-ye,CHEN Yi,et al.Study onwind-induced vibration control of long span transmission linesystem[J].Journal of Building Structures,2003,24(4):60-64.
[14]徐静,李宏男,李刚,等.考虑桩-土-结构动力相互作用的输电塔地震反应分析[J].工程力学,2009,26(9):24-29.XU Jing,LI Hong-nan,LI Gang,et al.Seismic response anal-ysis of transmission tower in consideration of the pile-soil dy-namic interaction[J].Engineering mechanics,2009,26(9):24-29.
[15]郭勇,孙炳楠.大跨越输电塔线体系风振响应频域分析及风振控制[J].空气动力学报,2009,27(3):287-294.GUO Yong,SUN Bing-nan.Frequency-domain analysis onwind-induced dynamic response and vibration control of longspan transmission line system[J].Acta Aerodynamica Sinica,2009,27(3):287-294.
[16]李黎,尹鹏.大跨越输电塔-线体系风振控制研究[J].工程力学,2008,25(2):213-229.LI Li,YIN Peng.The research on wind-induced vibration con-trol for big-span electrical transmission tower-line system[J].Engineering mechanics,2008,25(2):213-229.
[17]Jayaraman H B,Knudson W C A.A Curved element for the a-nalysis of cable structures[J].Computers and Structures,1981,14(3/4):325-333.
[18]Cao Huajin,Li Li,Chen Yuankun,et.al.Research on initialform-finding and galloping of ice-coated transmission conduc-tors[C]∥IEEE Computer Society,2010 International Confer-ence on Computer and Communication Technologies in Agricul-ture Engineering.Chengdu,China:IEEE,2010:113-116.
[19]尹鹏,李黎,梁政平.粘弹铅芯阻尼器在控制输电塔风振反应中的应用[J].振动与冲击,2007,26(8):1-4.YIN Peng,LI li,LIANG Zheng-ping.Wind-induced vibrationcontrol for electrical transmission towers by using lead viscoe-lastic dampers[J].Journal of Vibration and Shock,2007,26(8):1-4.
[20]Matsumoto N,Shiraishi M,Kitazawa,et al.Aerodynamic be-havior of inclined circular cylinders-cable aerodynamics[J].Journal of Wind Engineering and Industrial Aerodynamics,1990,33(1/2):63-72.
[21]李万平.覆冰导线群的动态气动力特性[J].空气动力学学报,2000,18(4):413-420.LI Wan-ping.Dynamic aerodynamic characteristics of the gal-loping of bundled iced power transmission lines[J].Acta Aero-dynamica Sinica,2000,18(4):413-420.
[22]李黎,陈元坤,叶志雄,等.架空输电线微风振动的室内模拟试验[J].华中科技大学学报(自然科学版),2010,38(8):99-102.LI Li,CHEN Yuan-kun,YE Zhi-xiong,et al.Indoor simula-tion tests for the aeolian vibration of overhead transmissionlines[J].Journal of Huazhong University of Science and Tech-nology(Natural Science Edition),2010,38(8):99-102.
[23]陈勇.风荷载模拟及风振时程分析[D].杭州:浙江大学,1997.CHEN Yong.Simulated wind loads and wind-time analysis[D].Hangzhou,China:Zhejiang University,1997.
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