高压输电铁塔及塔-线体系的耦合振动特性分析  

Analysis of coupled vibration characteristics between tower and tower-line system on high voltage transmission

作　　者：向玲[1] 郭曦煜 唐亮 卢明 XIANG Ling;GUO Xiyu;TANG Liang;LU Ming(Department of Mechanical Engineering,North China Electric Power University,Baoding 071003,Hebei,China;Electric Power Research Institute,State Grid Henan Electric Power Company,Zhengzhou 450052,China)

机构地区：[1]华北电力大学机械工程系,河北保定071003 [2]国网河南省电力公司电力科学研究院,郑州450052

出　　处：《中国工程机械学报》2018年第6期513-519,共7页Chinese Journal of Construction Machinery

基　　金：国家自然科学基金资助项目(51675178)

摘　　要：输电线路的振动特性分析对杆塔设计及线路舞动分析有着重要意义.以典型的500kV交流双回路输电线路为研究对象,使用悬链线法对导线和地线进行几何找形,利用有限元软件ABAQUS建立了耐张塔及三塔四档塔-线体系的有限元模型,分析了铁塔及塔-线体系的耦合振动特性.结果表明:建立的耐张塔横向和纵向的刚度相近,但纵向刚度略高于横向;在塔-线体系导地线和杆塔发生耦合振动时,会出现不同的共振振型,塔-线体系中单塔发生共振的频率比单塔单独分析时的共振频率值小.The vibration characteristics analysis of transmission line has an important meaning for the design of tower and conductor galloping.Taking the typical 500 kV transmission line as the object of study,and calculating wire geometric shape use the method of catenary.The finite element model of the strain tower and tower-line system with three-tower tower and four gaps were established by finite element software ABAQUS,and the coupled vibration characteristics were analysis respectively.The analysis results show that the lateral stiffness and longitudinal stiffness of the strain tower is similar,but the longitudinal stiffness is slightly higher than the lateral stiffness.When the coupled vibration occurs,there will be different resonance mode.The tower’s resonant frequency of tower-line system is smaller than the tower’s resonant frequency of single tower.

关 键 词：输电线路 铁塔 有限元法 振动特性 

分 类 号：TM75[电气工程—电力系统及自动化]