变化的气动力和电磁力对覆冰双分裂导线舞动的影响
|
摘要
基于FLUENT流体动力学软件对新月形覆冰双分裂导线绕流场进行了数值模拟,获得了各子导线阻力、升力及扭矩系数随子导线之间间距和风攻角的变化规律。进而利用ABAQUS用户自定义单元实现了随两子导线相对位置及风攻角变化的气动力、随子导线间间距变化的电磁力的施加,研究了随子导线间距变化的气动载荷以及电磁力对覆冰双分裂导线舞动的影响。分析了不同电流强度下双分裂导线的位移时程、运动轨迹、频率和子导线间间距时程等振动特征。结果表明,覆冰子导线相对位置变化对背风侧子导线的气动特性影响明显,电磁力及变化的气动力对分裂导线舞动特征的影响不可忽略。
The air flow of a twin bundle conductor with crescent-shaped ice is simulated by fluid dynamics software FLUENT, obtaining the variation of lift, drag and moment coefficients with wind attack angle and relative position between two sub-conductors. The aerodynamic force and electromagnetic force, varying with distance between two sub-conductors, are applied based on ABAQUS user defined element to study the influence of electromagnetic force on galloping motion of iced twin bundle conductor. Vibration characteristics of displacement, moving traces, frequency and relative distance of twin bundle conductor under different current intensity are analyzed. It can be concluded that the change of relative position between two sub-conductors impact significantly on aerodynamic characteristic of leeward sub-conductor, and the influence of varying electromagnetic and aerodynamic forces on galloping characteristics of twin bundle conductor cannot be ignored.
The air flow of a twin bundle conductor with crescent-shaped ice is simulated by fluid dynamics software FLUENT, obtaining the variation of lift, drag and moment coefficients with wind attack angle and relative position between two sub-conductors. The aerodynamic force and electromagnetic force, varying with distance between two sub-conductors, are applied based on ABAQUS user defined element to study the influence of electromagnetic force on galloping motion of iced twin bundle conductor. Vibration characteristics of displacement, moving traces, frequency and relative distance of twin bundle conductor under different current intensity are analyzed. It can be concluded that the change of relative position between two sub-conductors impact significantly on aerodynamic characteristic of leeward sub-conductor, and the influence of varying electromagnetic and aerodynamic forces on galloping characteristics of twin bundle conductor cannot be ignored.
引文
[1]DMITRI S.Wake-induced oscillations in cable structures:finite element approach[D].Moscow:University of Liege,2010.
[2]ZHANG Q,POPPLEWELL N,SHAH A H.Galloping of bundle conductor[J].Sound and vibration,2000,234(1):115-134.
[3]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 Gaoyu.On galloping of bundled conductors in an overhead transmission line with large torsional motion[J].Engineering mechanics,2001,18(2):126-134(in Chinese)).
[4]李黎,曹化锦,罗先国,等.输电塔-线体系的舞动及风振控制[J].高电压技术,2011,37(5):1253-1260.(LI Li,CAO Huajin,LUOXianguo,et al.Galloping and wind-induced vibration control on transmission tower-line system[J].High voltage engineering,2011,37(5):1253-1260(in Chinese)).
[5]刘小会,陈世民,韩勇,等.考虑邻档影响的覆冰输电线舞动数值模拟及参数分析[J].应用力学学报,2014,31(4):545-550.(LIUXiaohui,CHEN Shimin,HAN Yong,et al.Numerical simulation and parameter analysis of galloping for iced transmission lines consisting adjacent spans[J].Chinese journal of applied mechanics,2014,31(4):545-550(in Chinese)).
[6]刘小会,秦昌,张路飞,等.输电线面外模态及频率研究[J].应用力学学报,2017,34(3):431-437.(LIU Xiaohui,QIN Chang,ZHANG Lufei,et al.Out-plane mode and natural frequency of transmission line[J].Chinese journal of applied mechanics,2017,34(3):431-437(in Chinese)).
[7]HU J,YAN B,ZHOU S,et al.Numerical investigation on galloping of iced quad bundle conductors[J].IEEE transactions on power delivery,2012,27(2):784-792.
[8]YAN B,LIU X H,LüX,et al.Investigation into galloping characteristics of iced quad bundle conductors[J].Journal of vibration and control,2016,22(4):965-987.
[9]周林抒,严波,杨晓辉,等.真型试验线路六分裂导线舞动模拟[J].振动与冲击,2014,33(9):6-11.(ZHOU Linshu,YAN Bo,YANGXiaohui,et al.Galloping simulation of six-bundle conductors in a transmission test line[J].Journal of vibration and shock,2014,33(9):6-11(in Chinese)).
[10]马丽君.覆冰分裂导线气动特性及舞动研究[D].天津:天津理工大学,2014.(MA Lijun.The research on aerodynamic characteristics of iced bundle conductors galloping[D].Tianjin:Tianjin University of Technology,2014(in Chinese)).
[11]陈元坤.分裂导线的微风振动与次档距振动研究[D].武汉:华中科技大学,2011.(CHEN Yuankun.Study on aeolian vibration and subspan oscillation of bundle conductor[D].Wuhan:Huazhong University of Science&Technology,2011(in Chinese)).
[12]PRICE S J.Wake induced flutter of power transmission conductors[J].Journal of sound and vibration,1975,38(1):125-147.
[13]BELLOLI M,MELZI S,NEGRINI S,et al.Numerical analysis of the dynamic response of a 5-conductor expanded bundle subjected to turbulent wind[J].IEEE transactions on power delivery,2010,25(4):3105-3112.
[14]RAWLINS C B.Fundamental concepts in the analysis of wake-induced oscillation of bundled conductors[J].IEEE transactions on power apparatus and systems,1976,95(4):1377-1393.
[15]何小宝,严波,伍川,等.双分裂导线尾流诱发振荡数值模拟研究[J].振动与冲击,2017,36(4):59-65.(HE Xiaobao,YAN Bo,WU Chuan,et al.Numerical simulation study on wake-induced oscillation of twin bundle conductor lines[J].Journal of vibration and shock,2017,36(4):59-65(in Chinese)).
[16]MEHTA P R,SWART R L.Generalized formulation for electromagnetic forces on current-carrying conductors[J].IEEEtransactions on power apparatus and systems,1967,86(2):155-166.
[17]周林抒,严波,赵洋,等.电磁力对双分裂导线舞动的影响[J].振动与冲击,2016,35(4):141-147.(ZHOU Linshu,YAN Bo,ZHAOYang,et al.Effect of electromagnetic force on galloping of twin bundle conductor lines[J].Journal of vibration and shock,2016,35(4):141-147(in Chinese)).
[18]张殿生.电力工程高压送电线路设计手册[M].北京:中国电力出版社,2003.(ZHANG Diansheng.Design manual of high voltage transmission lines for electric engineering[M].Beijing:China Electric Power Press,2003(in Chinese)).
[19]DOOCY E S,HARD A R,RAWLINS C B,et al.Transmission line reference book:wind-induced conductor motion:EPRI-EL-100-4[R].United States:N.P.,1979.
[20]WARDLAW R L,COOPER K R,KO R G,et al.Wind tunnel and analytical investigation into the aeroelastic behaviour of bundled conductors[J].IEEE transactions on power apparatus and systems,1975,94(2):642-651.
[2]ZHANG Q,POPPLEWELL N,SHAH A H.Galloping of bundle conductor[J].Sound and vibration,2000,234(1):115-134.
[3]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 Gaoyu.On galloping of bundled conductors in an overhead transmission line with large torsional motion[J].Engineering mechanics,2001,18(2):126-134(in Chinese)).
[4]李黎,曹化锦,罗先国,等.输电塔-线体系的舞动及风振控制[J].高电压技术,2011,37(5):1253-1260.(LI Li,CAO Huajin,LUOXianguo,et al.Galloping and wind-induced vibration control on transmission tower-line system[J].High voltage engineering,2011,37(5):1253-1260(in Chinese)).
[5]刘小会,陈世民,韩勇,等.考虑邻档影响的覆冰输电线舞动数值模拟及参数分析[J].应用力学学报,2014,31(4):545-550.(LIUXiaohui,CHEN Shimin,HAN Yong,et al.Numerical simulation and parameter analysis of galloping for iced transmission lines consisting adjacent spans[J].Chinese journal of applied mechanics,2014,31(4):545-550(in Chinese)).
[6]刘小会,秦昌,张路飞,等.输电线面外模态及频率研究[J].应用力学学报,2017,34(3):431-437.(LIU Xiaohui,QIN Chang,ZHANG Lufei,et al.Out-plane mode and natural frequency of transmission line[J].Chinese journal of applied mechanics,2017,34(3):431-437(in Chinese)).
[7]HU J,YAN B,ZHOU S,et al.Numerical investigation on galloping of iced quad bundle conductors[J].IEEE transactions on power delivery,2012,27(2):784-792.
[8]YAN B,LIU X H,LüX,et al.Investigation into galloping characteristics of iced quad bundle conductors[J].Journal of vibration and control,2016,22(4):965-987.
[9]周林抒,严波,杨晓辉,等.真型试验线路六分裂导线舞动模拟[J].振动与冲击,2014,33(9):6-11.(ZHOU Linshu,YAN Bo,YANGXiaohui,et al.Galloping simulation of six-bundle conductors in a transmission test line[J].Journal of vibration and shock,2014,33(9):6-11(in Chinese)).
[10]马丽君.覆冰分裂导线气动特性及舞动研究[D].天津:天津理工大学,2014.(MA Lijun.The research on aerodynamic characteristics of iced bundle conductors galloping[D].Tianjin:Tianjin University of Technology,2014(in Chinese)).
[11]陈元坤.分裂导线的微风振动与次档距振动研究[D].武汉:华中科技大学,2011.(CHEN Yuankun.Study on aeolian vibration and subspan oscillation of bundle conductor[D].Wuhan:Huazhong University of Science&Technology,2011(in Chinese)).
[12]PRICE S J.Wake induced flutter of power transmission conductors[J].Journal of sound and vibration,1975,38(1):125-147.
[13]BELLOLI M,MELZI S,NEGRINI S,et al.Numerical analysis of the dynamic response of a 5-conductor expanded bundle subjected to turbulent wind[J].IEEE transactions on power delivery,2010,25(4):3105-3112.
[14]RAWLINS C B.Fundamental concepts in the analysis of wake-induced oscillation of bundled conductors[J].IEEE transactions on power apparatus and systems,1976,95(4):1377-1393.
[15]何小宝,严波,伍川,等.双分裂导线尾流诱发振荡数值模拟研究[J].振动与冲击,2017,36(4):59-65.(HE Xiaobao,YAN Bo,WU Chuan,et al.Numerical simulation study on wake-induced oscillation of twin bundle conductor lines[J].Journal of vibration and shock,2017,36(4):59-65(in Chinese)).
[16]MEHTA P R,SWART R L.Generalized formulation for electromagnetic forces on current-carrying conductors[J].IEEEtransactions on power apparatus and systems,1967,86(2):155-166.
[17]周林抒,严波,赵洋,等.电磁力对双分裂导线舞动的影响[J].振动与冲击,2016,35(4):141-147.(ZHOU Linshu,YAN Bo,ZHAOYang,et al.Effect of electromagnetic force on galloping of twin bundle conductor lines[J].Journal of vibration and shock,2016,35(4):141-147(in Chinese)).
[18]张殿生.电力工程高压送电线路设计手册[M].北京:中国电力出版社,2003.(ZHANG Diansheng.Design manual of high voltage transmission lines for electric engineering[M].Beijing:China Electric Power Press,2003(in Chinese)).
[19]DOOCY E S,HARD A R,RAWLINS C B,et al.Transmission line reference book:wind-induced conductor motion:EPRI-EL-100-4[R].United States:N.P.,1979.
[20]WARDLAW R L,COOPER K R,KO R G,et al.Wind tunnel and analytical investigation into the aeroelastic behaviour of bundled conductors[J].IEEE transactions on power apparatus and systems,1975,94(2):642-651.