Experimental and Numerical Analysis of Overhead Transmission Lines Vibration due to Atmospheric Icing

被引：0
|
作者：
Liu, Bin [1 ]
Ji, Kunpeng [1 ]
Zhan, Xueping [1 ]
Fei, Xiangze [1 ]
Li, Peng [1 ]
Zhao, Bin [1 ]
Deng, Chun [2 ]
Liu, Liang [2 ]
Dong, Yongxing
Wang, Zhili [4 ]
Luo, Yongqin [3 ,4 ]
Bai, Yang [5 ]
机构：
[1] China Elect Power Res Inst, Dept Transmiss & Distribut Engn, Beijing, Peoples R China
[2] Jibei Elect Power Res Inst, Beijing, Peoples R China
[3] North China Elect Power Univ, Sch Energy Power & Mech Engn, Beijing, Peoples R China
[4] State Grid Shanxi Elect Power Co, Taiyuan, Shanxi, Peoples R China
[5] State Grid Shanxi Elect Power Res Inst, Taiyuan, Shanxi, Peoples R China
来源：
2017 PROGNOSTICS AND SYSTEM HEALTH MANAGEMENT CONFERENCE (PHM-HARBIN) | 2017年
基金：
北京市自然科学基金;
关键词：
transmission line; dynamic characteristics; finite element method; ice shedding; ICE; SIMULATION; CONDUCTORS;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Atmospheric icing is one of the main threats to overhead transmission lines in cold regions. The ice related loads may cause mechanical incidents, such as wire breakage, cable rupture, clamp slipping, cross-arm deformation and even tower collapse. Ice shedding may lead to dramatic vibration of lines and cause flashover or short circuit among ground wires, conductors and the earth. Therefore, to obtain the static and dynamic load characteristics of the overhead electric transmission lines is essential for transmission line design and operation. Also, it provides important information for health evaluation of transmission line components, and prediction of their remaining service life. In present study, a three-span full scale physical model of transmission line was established, with the span length of 50m-150m-50m. Ice shedding was simulated by sudden release of lumped mass. The mid-span jump heights were measured during different ice shedding scenarios, to quantizing the dynamic characteristics of lines. Then, finite element method (FEM) was employed for numerical simulation of ice shedding phenomenon. The comparison of numerical and experimental results confirms the feasibility and efficiency of the numerical simulation method in this paper. This study provides essential experimental data about ice shedding of full scale transmission lines, and is of great help for transmission line design and icing disaster alleviation.
引用
收藏
页码：1117 / 1120
页数：4
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