Analysis of Potential Shift Characteristics of Live Working on ±800 kV UHVDC Transmission Line

LI Zhiqi; LUO Richeng; LI Wen; ZHOU Chenmeng; SHI Zhiqiang; ZHENG Yunlong

doi:10.13296/j.1001-1609.hva.2020.03.024

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Analysis of Potential Shift Characteristics of Live Working on ±800 kV UHVDC Transmission Line

更新时间：2025-04-26

- Analysis of Potential Shift Characteristics of Live Working on ±800 kV UHVDC Transmission Line
- High VoltageApparatus Vol. 56, Issue 3, Pages: 164-168+175(2020)
- 作者机构：
  
  1. 长沙理工大学电气与信息工程学院
  2. 国网湖南省电力有限公司检修公司
  3. 国网山东省电力公司检修公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2020.03.024
  CLC： TM75;TM84
- Published：2020
- 稿件说明：
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[1]李智琦,罗日成,李稳,周晨梦,史志强,郑云龙.±800 kV特高压直流输电线路带电作业电位转移特性分析[J].高压电器,2020,56(03):164-168+175.

LI Zhiqi, LUO Richeng, LI Wen, et al. Analysis of Potential Shift Characteristics of Live Working on ±800 kV UHVDC Transmission Line[J]. High voltageapparatus, 2020, 56(3): 164-168+175.
[1]李智琦,罗日成,李稳,周晨梦,史志强,郑云龙.±800 kV特高压直流输电线路带电作业电位转移特性分析[J].高压电器,2020,56(03):164-168+175. DOI： 10.13296/j.1001-1609.hva.2020.03.024.

LI Zhiqi, LUO Richeng, LI Wen, et al. Analysis of Potential Shift Characteristics of Live Working on ±800 kV UHVDC Transmission Line[J]. High voltageapparatus, 2020, 56(3): 164-168+175. DOI： 10.13296/j.1001-1609.hva.2020.03.024.

摘要

为保障进行±800 kV输电线路带电作业人员的人身安全

对带电作业人员电位转移特性的研究有助于制定合适的安全防护措施。通过建立作业人员进行电位转移过程中基于流体动力学的棒—板间隙放电模型

仿真得到了人与导线间的空气间隙电场强度变化特性

计算了转移过程中的暂态能量

分析了转移距离为0.3～0.6 m时电位转移能量数值的分布特点。结果表明

不同转移距离下的转移能量均在1.0 J附近

随着转移距离的增大

转移能量有所增加

而转移能量高于1.0 J时

导电手套存在被烧蚀的风险

因此作业人员进行±800 kV输电线路带电作业电位转移宜使用电位转移棒进行电位转移

确保作业人员的人身安全。

Abstract

In order to ensure the safety of workers while live working on±800 kV transmission line

the analysis of the potential transfer characteristics is helpful to take appropriate safety protection for operating personnel.By establishing the model of the rod-plate gap discharge based on hydrodynamics theory during the process of potential transfer

the electric field intensity of the air gap between the worker and the transmission lines is acquired

the transient energy during potential shift is calculated

and the value of potential transfer energy distribution characteristics is analyzed while the transfer distance changed from 0.3 m to 0.6 m.The results show that the transfer energy under different transfer distances is around 1.0 J

and the transfer energy increases with the increase of transfer distance.When the transfer energy is higher than 1.0 J the conductive gloves have the risk of being ablated.Thus

to protect the operating personnel

a potential

transfer rod is required when transferring to the live conductor of the±800 kV transmission line.

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