覆冰导线舞动的动态张力研究  

Dynamic tension of iced conductor galloping

作　　者：刘操兰[1] 朱宽军[1] 刘彬[1] 邸玉贤[1] 

机构地区：[1]中国电力科学研究院,北京100055

出　　处：《振动与冲击》2012年第5期82-86,共5页Journal of Vibration and Shock

基　　金：国家自然科学基金(51008288)

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。Transmission line galloping intimidates the reliability and the stability of transmission lines. Computing the dynamic tension of ice aecreted conductor induced by wind is one of the most important parts of galloping research of transmission line. First of all, the theoretical formula of galloping conductor dynamic tension was derived from the perspectives of energy balance and variation of conductor＇s length. Then, the numerical simulation model for the galloping tension was established. Taking an actual high-voltage transmission line as an example, the theoretical formula was proved to be effective by comparing the theoretical results with the numerical ones, its applicable range was judged. The influence law of amplitude, half-wave number, span, elevation angle on the dynamic tension was achieved by analyzing the theoretical results and the numerical ones. It was shown that the proposed method is reasonable and provides a reference for analyzing galloping.

关 键 词：舞动 导线 动态张力 线路参数 理论公式 数值计算 

分 类 号：TM726.3[电气工程—电力系统及自动化]