架空输电线非同期脱冰跳跃动张力实验研究

王璋奇1 齐立忠1 王剑1 王得文2 陈原2 卢毅2

振动与冲击 ›› 2016, Vol. 35 ›› Issue (22) : 61-65.

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (22) : 61-65.
论文

架空输电线非同期脱冰跳跃动张力实验研究

  • 王璋奇1 齐立忠1 王剑1 王得文2 陈原2 卢毅2
作者信息 +

Experiments on the dynamic tension of overhead conductor under the asynchronous ice shedding

  • WANG Zhangqi1, QI Lizhong1, WANG Jian1, WANG Dewen2, CHEN Yuan2, LU Yi2
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摘要

利用架空输电线脱冰跳跃实验系统,通过模型实验来研究架空线非同期脱冰跳跃的动张力特性。实验设计了从一端往另一端、从两端往档中以及从档中往两端等三种“开拉链”式非同期脱冰方式,研究3种“开拉链”式的非同期脱冰形式对导线动张力的影响,结果表明:在相同的脱冰速度下,从档中往两端的非同期脱冰方式将在导线中产生较大的动张力波动。针对从一端往另一端的“开拉链”式非同期脱冰,研究了脱冰速度对导线动张力的影响,结果表明:脱冰时间间隔为数十毫秒量级时,脱冰速度越快导线动张力的波动越剧烈;脱冰时间间隔为数百毫秒量级时,架空输电线脱冰跳跃动张力以近似斜直线的形式衰减,并相对平缓地过渡到该导线的静态张力水平。

Abstract

Using the transmission line ice shedding experiment system, the dynamic tension characteristics of conductors under asynchronous ice shedding are studied. For the effects of “unzipping” sequential ice shedding model on the dynamic tension of the conductor, three different ice shedding models are designed in the tests, which are from terminal to terminal, from two ends to the middle span and from the middle span to two ends. The results show that the dynamic tension fluctuates more intense when the ice shedding method is from middle span to both of the ends. The results show that the dynamic tension fluctuates more intense for ice shedding from middle to both ends of the span. The influence of ice shedding velocity to the dynamic tension of the conductor is studied by the use of terminal to terminal ice shedding model. The results show, (1) for time intervals are in the order of magnitude of 10 milliseconds, the shorter time interval will produces more severe tension fluctuation in conductor, and (2) for time intervals are in the order of magnitude of 100 milliseconds, the dynamic tensions of conductor are attenuated in a line style and approach to the static tensions of conductor.
 

关键词

架空输电线 / 非同期脱冰跳跃 / 动张力

Key words

 Overhead conductor
/ asynchronous ice shedding / dynamic tension

引用本文

导出引用
王璋奇1 齐立忠1 王剑1 王得文2 陈原2 卢毅2. 架空输电线非同期脱冰跳跃动张力实验研究[J]. 振动与冲击, 2016, 35(22): 61-65
WANG Zhangqi1, QI Lizhong1, WANG Jian1, WANG Dewen2, CHEN Yuan2, LU Yi2. Experiments on the dynamic tension of overhead conductor under the asynchronous ice shedding[J]. Journal of Vibration and Shock, 2016, 35(22): 61-65

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