风振响应下塔-线体系的动力特性分析  

Dynamic Response Analysis of Tower-line System under Wind-Induced Vibration

作　　者：路焕军 LU Huanjun(State Grid Xi’an Power Supply Company,Xi’an 710032,Shaanxi,China)

机构地区：[1]国网西安供电公司,陕西西安710032

出　　处：《电网与清洁能源》2020年第11期39-44,共6页Power System and Clean Energy

摘　　要：为研究输电塔结构在风振响应下的影响,利用Kaimal风速谱通过谐波叠加法进行脉动风模拟,对3种不同风速下输电塔及塔-线体系进行动力特性分析。研究表明,单塔和塔-线体系的动力响应均随风速和高度的增加而愈加强烈,且X向大于Y向,考虑导线的体系较普通单塔的响应大,表现出导线和杆塔具有耦合性,使得塔-线体系的动力响应明显增强,所以在结构设计中应对导线予以考虑。In order to study the influence of the transmission tower structure under the wind-induced response,this paper uses the Kaimal wind speed spectrum to simulate the fluctuating wind by the harmonic superposition method,and then analyzes the dynamic characteristics of the transmission tower and the tower-line system under three different wind speeds. Studies have shown that the dynamic response of the single tower and the tower-line system becomes stronger with the increase of wind speed and height,and it is greater in the Xdirection than in the Y-direction. The system considering the conductor has a larger response than the ordinary single tower,showing that the conductor and the tower can be coupled to enhance the dynamic response of the tower-line system significantly,therefore conductors should be duly considered in the structural design.

关 键 词：脉动风 谐波叠加 风振响应 塔-线体系 

分 类 号：TM753[电气工程—电力系统及自动化]