Analysis on Wind-induced Swing of Conductor Under Thunderstorm Downburst

LYU Zhongbin; WU Dengguo; WANG Jiawei

doi:10.13296/j.1001-1609.hva.2019.03.030

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Analysis on Wind-induced Swing of Conductor Under Thunderstorm Downburst

更新时间：2025-04-26

- Analysis on Wind-induced Swing of Conductor Under Thunderstorm Downburst
- High VoltageApparatus Vol. 55, Issue 3, Pages: 193-198(2019)
- 作者机构：
  
  1. 国网河南省电力公司电力科学研究院
  2. 浙江大学结构工程研究所
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2019.03.030
  CLC： TM75
- Published：2019
- 稿件说明：
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[1]吕中宾,吴登国,王嘉伟.雷暴冲击风下导线风偏响应分析[J].高压电器,2019,55(03):193-198.

LYU Zhongbin, WU Dengguo, WANG Jiawei. Analysis on Wind-induced Swing of Conductor Under Thunderstorm Downburst[J]. High voltageapparatus, 2019, 55(3): 193-198.
[1]吕中宾,吴登国,王嘉伟.雷暴冲击风下导线风偏响应分析[J].高压电器,2019,55(03):193-198. DOI： 10.13296/j.1001-1609.hva.2019.03.030.

LYU Zhongbin, WU Dengguo, WANG Jiawei. Analysis on Wind-induced Swing of Conductor Under Thunderstorm Downburst[J]. High voltageapparatus, 2019, 55(3): 193-198. DOI： 10.13296/j.1001-1609.hva.2019.03.030.

摘要

部分输电线路风偏闪络和倒塔事故的现场勘察资料和气象报告显示

雷暴强风是事故的主要诱因之一。为降低此类风场下的安全事故发生率

文中遴选出合适的模型函数（Li模型）

采用数值方法进行雷暴风风场模拟。以某超高压多跨输电线路为例

采用非线性有限元静力分析法

对雷暴冲击风作用下的导线风偏进行求解

并就风暴中心与线路的相对位置和风暴结构参数（风暴尺度、风暴强度）对计算结果的影响进行讨论。结果表明:①相对位置的变化对结果的影响显著

整个线路风偏最不利的位置为非跨中的3、6号绝缘子;②总体而言

风暴尺度和强度的增大

均会导致风偏响应的迅速增加及其在空间内高危区域的扩大。

Abstract

Thunderstorm downburst may cause flashover of transmission lines and collapse of towers. In order to decrease the accident rate of transmission lines under such wind field

this paper chooses the Li’s model to nu-merically simulate the thunderstorm downburst. Taking an ultra-high voltage transmission line for example

the downburst-induced swing of conductor is calculated with the non-linear finite element static analysis. Moreover

the effects of both the relative location between line and storm center and the storm parameters（storm size and storm intensity）on the calculation results are analyzed. It is revealed that: ① the relative location has remark-able effect on the calculation

and for downburst-induced conductor swing

the worst locations along the whole line are at No.3 and No.6 suspension insulators; ② in general

the rise of either storm size or storm intensity would enhance the swing response of the line

and enlarge high risk regions.

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