Analysis of Body Surface Electric Field Distribution for Live Working on UHV Jumper Insulator String

SUN Wenxiu; DING Yujian; YAO Xiuyuan; MAO Yan; LYU Fangcheng

doi:10.13296/j.1001-1609.hva.2020.02.022

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Analysis of Body Surface Electric Field Distribution for Live Working on UHV Jumper Insulator String

更新时间：2025-04-26

- Analysis of Body Surface Electric Field Distribution for Live Working on UHV Jumper Insulator String
- High VoltageApparatus Vol. 56, Issue 2, Pages: 150-157(2020)
- 作者机构：
  
  1. 华北电力大学电气与电子工程学院
  2. 中国电力科学研究院有限公司
  3. 华北电力大学河北省输变电设备安全防御重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2020.02.022
  CLC： TM721.1
- Published：2020
- 稿件说明：
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[1]孙文秀,丁玉剑,姚修远,毛艳,律方成.特高压跳线串带电作业人体电场分布特性分析[J].高压电器,2020,56(02):150-157.

SUN Wenxiu, DING Yujian, YAO Xiuyuan, et al. Analysis of Body Surface Electric Field Distribution for Live Working on UHV Jumper Insulator String[J]. High voltageapparatus, 2020, 56(2): 150-157.
[1]孙文秀,丁玉剑,姚修远,毛艳,律方成.特高压跳线串带电作业人体电场分布特性分析[J].高压电器,2020,56(02):150-157. DOI： 10.13296/j.1001-1609.hva.2020.02.022.

SUN Wenxiu, DING Yujian, YAO Xiuyuan, et al. Analysis of Body Surface Electric Field Distribution for Live Working on UHV Jumper Insulator String[J]. High voltageapparatus, 2020, 56(2): 150-157. DOI： 10.13296/j.1001-1609.hva.2020.02.022.

摘要

特高压直流跳线通常采用双V型悬垂串

结构复杂

增加了带电作业进出等电位的难度。为研究跳线处进出等电位的最佳路径

文中对作业人员进出等电位过程中的体表电场分布特性进行了仿真计算。研究中选取了进出等电位的8条路径

计算作业人员采用不同路径进入等电位时

体表场强值的动态变化。根据静电场仿真结果

人员偏开高压端大环1 m

从塔身水平进入等电位时体表场强平均值最低且畸变最小

安全系数最高;从横担垂直进入有发生电晕放电的危险

应尽量避免。综合考虑跳线处结构特点和实际作业情况

推荐偏开高压端大环1 m从塔身水平进入为最佳等电位进入路径。

Abstract

Double V-type suspension strings are usually adopted in the UHV DC transmission jumper

which has a complicated structure and increases the difficulty of entering equipotential position in live working.In order to study the best path of entering equipotential position at jumper

the electric field distribution characteristics of body surface when entering the equipotential position is calculated.Eight different paths are selected to calculate the dynamic change of electric field strength on body surface when entering in each path.According to the simulation results

the electric field strength of b ody surface is the lowest and changes most smoothly when entering horizontally from the tower body and keeping 1 meter off the large equalizing ring

of which the safety factor is the highest.Besides entering vertically from the crossarm is the most dangerous way

which may lead to corona discharge.Taking the structural characters of the jumper and actual live working operation into consideration

entering horizontally from the tower body when 1 meter off the large equalizing ring is recommended as the safest way to the equipotential position.

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