阻尼线的耗能计算及其在输电线防振中的应用

李黎;叶志雄;江宜城;方秦汉;

振动与冲击 ›› 2009, Vol. 28 ›› Issue (8) : 16-19.

PDF(898 KB)
PDF(898 KB)
振动与冲击 ›› 2009, Vol. 28 ›› Issue (8) : 16-19.
论文

阻尼线的耗能计算及其在输电线防振中的应用

  • 李黎1,2, 叶志雄1,2, 江宜城1,2, 方秦汉1,2
作者信息 +

Energy Dissipation Calculation of Wire Dampers and Its Application to Suppress Aeolian Vibration of Transmission Lines

  • LI Li1,2, YE Zhi-xiong1,2, JIANG Yi-cheng1,2, FANG Qin-han1,2
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文章历史 +

摘要

摘要: 阻尼线是保护架空输电线路免受微风振动危害的理想措施之一,在我国大跨越输电线路中得到广泛应用。通过建立阻尼线理论力学模型,研究其复杂的静力形态,对振动方程用摄动法进行了求解,得到了阻尼线谐振频率和耗能的计算方法。并基于能量平衡法用Matlab编制了计算程序,以特高压长江大跨越地线为对象,设计了β阻尼线加防振锤的组合防振方案。数值计算结果表明,设计的防振方案具有较好的防振效果,能满足特高压输电线的防振要求,可供特高压输电线设计及施工建设时参考。

Abstract

Abstract: Wire damper (bretelles) is an ideal device to protect overhead conductors from damage by aeolian vibration, which is widely used on long span transmission lines in China. After the theoretical mechanical model of wire damper is built, the complex static deformation of wire damper is solved and established, energy dissipation calculation formulae are derived, so the vibration energy dissipated by β wire dampers can be considered in energy balance method. Then the computer program based on energy balance method is developed by applying Matlab, and Ultra high Voltage (UHV) Yangtze River large crossing ground wires are analyzed. One β wire dampers plus stockbridge dampers combination anti-vibration measure is designed to suppress its aeolian vibration. The calculation results show that this damping device can satisfy with UHV long span transmission lines vibration prevention requirement. So this method can provide reference for the research and construction of UHV engineering projects.

关键词

阻尼线 / 微风振动 / 能量平衡法 / FR防振锤 / 特高压输电线

Key words

wire dampers / aeolian vibration / energy balance method / FR dampers / ultra high voltage transmission lines

引用本文

导出引用
李黎;叶志雄;江宜城;方秦汉;. 阻尼线的耗能计算及其在输电线防振中的应用[J]. 振动与冲击, 2009, 28(8): 16-19
LI Li;YE Zhi-xiong;JIANG Yi-cheng;FANG Qin-han;. Energy Dissipation Calculation of Wire Dampers and Its Application to Suppress Aeolian Vibration of Transmission Lines[J]. Journal of Vibration and Shock, 2009, 28(8): 16-19

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