覆冰导线舞动的动态张力研究

刘操兰;朱宽军;刘 彬;邸玉贤

振动与冲击 ›› 2012, Vol. 31 ›› Issue (5) : 82-86.

PDF(1857 KB)
PDF(1857 KB)
振动与冲击 ›› 2012, Vol. 31 ›› Issue (5) : 82-86.
论文

覆冰导线舞动的动态张力研究

  • 刘操兰,朱宽军,刘 彬,邸玉贤
作者信息 +

Study on dynamic tension of iced conductor galloping

  • LIU Cao-lan,ZHU Kuan-jun,LIU Bin,DI Yu-xian
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文章历史 +

摘要

导线舞动严重威胁输电线路安全稳定运行,确定舞动引起的动态张力是研究舞动问题的重要内容之一。首先从能量平衡和导线长度变化的角度,推导动态张力的理论公式。然后建立导线舞动张力变化数值模拟模型。以实际高压输电线路为例,将理论结果与数值计算进行比较,判断理论公式是否有效及其适用范围。分析理论和数值结果,得到舞动幅值、阶数、档距、高差角等参数对动态张力的影响规律。对导线舞动分析有参考价值

Abstract

Transmission line galloping intimidates the reliability and the stability of transmission lines. Computing the dynamic tension of ice accreted conductor induced by wind is one of the most important parts of galloping studies of transmission line. First of all, the theoretical formula of Galloping Conductor dynamic tension could be derived from the perspectives of energy balance and variation of conductor’s length. Then the numerical simulation model for the computation of tension variety provoked by galloping could be established. Taking the actual high-tension transmission line as an example, the outcome deduced by the theoretical results proved to be effective on comparing with the numerical results. Judge the application scope of the theoretical formula. The influence law of amplitude, half-wave number, span, elevation angle to dynamic tension was achieved by analyzing the results of theoretical and of numerical formula. This indicates that the proposal method in this paper is reasonable and has some reference value in analyzing the galloping.

关键词

舞动 / 导线 / 动态张力 / 线路参数 / 理论公式 / 数值计算

Key words

galloping / conductor / dynamic tension / transmission line parameter / theoretical formula / numerical assessment

引用本文

导出引用
刘操兰;朱宽军;刘 彬;邸玉贤. 覆冰导线舞动的动态张力研究[J]. 振动与冲击, 2012, 31(5): 82-86
LIU Cao-lan;ZHU Kuan-jun;LIU Bin;DI Yu-xian. Study on dynamic tension of iced conductor galloping[J]. Journal of Vibration and Shock, 2012, 31(5): 82-86

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