Parametric resonance mechanism of conductor galloping without icing on overhead line

被引：0
|
作者：
Liu L. [1 ]
Hao Z. [1 ]
Cui Y. [2 ]
Xing Y.-F. [2 ]
Cai W. [1 ]
Deng C. [1 ]
机构：
[1] Electric Power Research Institute of State Grid JIBEI Electric Power Company, Beijing
[2] School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing
来源：
Cui, Yun (kyalex@sina.com) | 2018年 / Nanjing University of Aeronautics an Astronautics卷 / 31期
关键词：
Galloping; Parametric resonance; Single conductor; Vibration experiment; Wind-induced vibration;
D O I：
10.16385/j.cnki.issn.1004-4523.2018.02.014
中图分类号：
学科分类号：
摘要：
In order to explain the causes of the overhead line conductor galloping phenomenon better, the galloping on overhead line with a single conductor is studied by equating the wind load to axial periodic displacement excitation. It is concluded that the galloping of a single conductor without icing is parametric resonance. According to this mechanism, the main influence factors of the galloping are the periodic variation of transmission line system's parameters. The parametric resonance of system will occur, i.e. galloping, when the excitation frequency and eigenfrequency of system satisfy a certain relationship. The mechanism established is verified to be able to explain the transmission line conductor galloping through simulated operational line vibration experiments. © 2018, Nanjing Univ. of Aeronautics an Astronautics. All right reserved.
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页码：308 / 313
页数：5
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