Study on Finite Element Analysis of Breeze Vibration of Transmission Lines Based on Three-Node Cable Elements

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

You, Yi^1 ; Zhang, Longqin^1 ; Zhang, Ling^1 ; Ma, Qinyong^1 ; Yan, Zhitao^2 ; Liu, Xinpeng^2

State Grid Xinjiang Electric Power Co. Ltd., Electric Power Research Institute, Urumqi

830063, China^1

School of Civil Engineering and Architecture, Chongqing University of Science and Technology, Shapingba District, Chongqing

401331, China^2

关键词: Bending stiffness;    Cable element;    Dynamic solutions;    Energy balance method;    Non-linear model;    Vortex force;    Vortex induced vibration;    Wind speed;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/4/042103/pdf
DOI  :  10.1088/1755-1315/170/4/042103

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In order to study the mechanism of the breeze vibration of transmission lines, based on the non-linear model of Scanlan's experience, the finite element motion equation of the transmission line's breeze vibration is derived, and the dynamic solution is carried out. The results show that the parameters of Scanlan vortex force have a significant influence on the stable amplitude of the breeze vibration of transmission lines. Due to the neglect of the bending stiffness of the cable elements, the finite element calculation results of the cable breeze vibration are slightly less than the energy balance method, and as the wind speed increases, the error increases gradually; when the wind speed is 3m/s, the frequency of the wire vortex-induced vibration is 30Hz, which is consistent with the calculation of the Stokehal number.