兰新高铁大风区段接触网正馈线斜拉绝缘子防舞有效性分析  

Anti-galloping Effectiveness Analysis of Positive Feeder Cable-stayed Insulator of Catenary in Strong Wind Area of Lanzhou-Urumqi High-speed Railway

作　　者：张友鹏[1] 张宸瑞 赵珊鹏 王思华[1] 王玉环[3] ZHANG Youpeng;ZHANG Chenrui;ZHAO Shanpeng;WANG Sihua;WANG Yuhuan(School of Automatic&Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Rail Transit Electrical Automation Engineering Laboratory of Gansu Province,Lanzhou 730070,China;China Railway First Survey and Design Institute Group Co.,Ltd.,Xi’an 710043,China)

机构地区：[1]兰州交通大学自动化与电气工程学院,兰州730070 [2]甘肃省轨道交通电气自动化工程实验室,兰州730070 [3]中铁第一勘察设计院集团有限公司,西安710043

出　　处：《高电压技术》2020年第11期3905-3913,共9页High Voltage Engineering

基　　金：国家自然科学基金(51867013,51767014)。

摘　　要：为解决兰新高铁大风区段接触网正馈线舞动问题,保障牵引供电系统安全运行,开展了接触网正馈线斜拉绝缘子防舞有效性研究。以正馈线为研究对象,基于结构力学建立正馈线有限元模型,施加导线自重负载对其进行找形计算,并对找形后的模型添加相应的气动载荷,分析对比安装斜拉绝缘子前后正馈线的舞动响应。研究结果表明:以来风速度15 m/s为例,未安装斜拉绝缘子之前,正馈线舞动剧烈,垂向位移和横向位移峰峰值分别为1.82 m和1.81 m;安装斜拉绝缘子之后,正馈线舞动峰峰值明显减小,最大张力减小到导线安全运行范围内,张力波动减小,证明安装斜拉绝缘子能够有效地抑制正馈线舞动现象。In order to suppress the galloping of catenary positive feeder in the strong wind areas of the Lanzhou-Urumqi high-speed railway, and to ensure the operation safety of the traction power supply system, we studied the anti-galloping effectiveness of the catenary positive feeder cable-stayed insulator. Taking the positive feeder as the research object, we established a finite element model of positive feeder based on structural mechanics. Then, the self-weight load of the wire was used to calculate the shape of the model. Thereafter, the corresponding aerodynamic load was added to the model to compare the galloping response of the positive feeder before and after installing the cable-stayed insulator. The research results show that, assuming the wind velocity is 15 m/s, the positive feeder gallops violently when the cable-stayed insulator is not installed, and the peak-to-peak values of vertical and horizontal displacement are 1.82 m and 1.81 m, respectively. However, after the installation of the cable-stayed insulator, the peak-to-peak value of the positive feeder galloping is significantly decreased, the maximum tension is reduced within the safe operation range of the wire, and the tension fluctuation is reduced, which proves that the installation of the cable-stayed insulator can effectively suppress the galloping of catenary positive feeder.

关 键 词：兰新高铁 接触网正馈线 斜拉绝缘子 找形计算 气动载荷 舞动响应 

分 类 号：U225[交通运输工程—道路与铁道工程]