Statistical Method of CG Lightning Density by Circling Tower

LIU Huan; RUAN Jiangjun; LI Zhenzhu; GAN Yan; DU Zhiye; ZHANG Sihan; WU Zhuojun

doi:10.13296/j.1001-1609.hva.2014.06.013

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Statistical Method of CG Lightning Density by Circling Tower

更新时间：2025-04-26

- Statistical Method of CG Lightning Density by Circling Tower
- High VoltageApparatus Vol. 50, Issue 6, Pages: 75-80(2014)
- 作者机构：
  
  1. 武汉大学电气工程学院
  2. 国网娄底供电公司
  3. 华中电网有限公司
  4. 佛山供电局
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2014.06.013
  CLC： TM75
- Published：2014
- 稿件说明：
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[1]刘欢,阮江军,李振柱,甘艳,杜志叶,张思寒,吴焯军.地闪密度按杆塔画圆差异化统计分析[J].高压电器,2014,50(06):75-80.

LIU Huan, RUAN Jiangjun, LI Zhenzhu, et al. Statistical Method of CG Lightning Density by Circling Tower[J]. High voltageapparatus, 2014, 50(6): 75-80.
[1]刘欢,阮江军,李振柱,甘艳,杜志叶,张思寒,吴焯军.地闪密度按杆塔画圆差异化统计分析[J].高压电器,2014,50(06):75-80. DOI： 10.13296/j.1001-1609.hva.2014.06.013.

LIU Huan, RUAN Jiangjun, LI Zhenzhu, et al. Statistical Method of CG Lightning Density by Circling Tower[J]. High voltageapparatus, 2014, 50(6): 75-80. DOI： 10.13296/j.1001-1609.hva.2014.06.013.

摘要

国网武汉高压研究院在2007年提出用网格法对地闪密度进行统计

这种方法可形成直观的、高精度的密度空间分布图。但是在进行防雷计算的过程中

当某一杆塔处于地闪密度变化剧烈的网格分界处时

不易于确定地闪密度的值。笔者提出地闪密度按每基杆塔为中心画圆的方法进行统计

可以更直观和精确的反映出杆塔所处地的综合地闪密度值。并以500 kV葛岗线为例

用按杆塔画圆方法得到的地闪密度值对线路耐雷水平进行计算

并进行了风险评估

计算结果显示

文中方法能够较好地反映线路地闪密度变化对耐雷水平的影响。

Abstract

Wuhan High Voltage Research Institute of SGCC proposed a statistical method of CG lightning density

named grid method

which can form a intuitive and high-precision spatial distribution map of CG lightning density. However

the lightning protection calculation becomes in difficulty because the CG lightning density around a tower is not easy to be determined when the tower is located at the boundary of grid with sharp variation of CG lightning density. The authors propose a statistical method of CG lightning density by circling the tower to intuitively and precisely reflect the comprehensive value of CG lightning density around the tower. Taking Ge-Gang 500 kV transmission line for example

its lightning withstand level is calculated and the risk assessment is performed by using the proposed method

and the results illustrate the relation between lightning withstand level of the line and CG lightning density.

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