摘要
高压输电线风雨激振严重威胁着输电线路的寿命和安全运行，其激振机理及防治措施成为电力系统急待研究的难题之一。在降雨、风载和电场作用下，在输电导线表面形成极化水线, 水线的运动诱发气动力变化导致输电线线路振动。本文建立了水线运动与输电导线振动耦合的风雨激振理论模型。采用龙格-库塔法对输电导线和水线运动方程进行数值求解，得到了输电导线和水线的响应，讨论了风速、导线结构阻尼和电场力等参数对输电导线振幅的影响
Abstract
Ionic wind generated by corona discharging of transmission line, and which generated vortex-induced vibration of the transmission line. In order to study the characteristics of the vibration, studied the field strength of corona and mechanism of ionic, and established the vibration equation of corona vortex-induced vibration. Using Runge-Kutta method to calculate the vibration response of the 220KV cable, researched the impact on amplitude of cable by the air humidity and density, conductor surface conditions, cable structure factors and tensions. Analysis and conclusions in this paper, can be used as references for designing UHV transmission liens, upgrading the existing lines and controlling vibration.
关键词
风雨激振 /
输电线路 /
水线 /
振动
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Key words
Rain-induced vibration /
Transmission line /
waterline /
vibration
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周 超;芮晓明.
高压输电线风雨激振特性研究及数值分析[J]. 振动与冲击, 2013, 32(6): 173-175
Zhou Chao Rui Xiao-ming .
Study on rain-induced vibration model of transmission line and numerical analysis[J]. Journal of Vibration and Shock, 2013, 32(6): 173-175
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