Analysis and Research on the Influencing Factors of Ground Induced Synthetic Electric Field of±800 kV DC Transmission Line

LI Zhenhua; WEI Yinkong; HUANG Yuehua; YAO Weifang; XU Peng; XIE Huichun

doi:10.13296/j.1001-1609.hva.2026.02.022

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Analysis and Research on the Influencing Factors of Ground Induced Synthetic Electric Field of±800 kV DC Transmission Line

Research & Analysis | 更新时间：2026-03-16

- Analysis and Research on the Influencing Factors of Ground Induced Synthetic Electric Field of±800 kV DC Transmission Line
- High Voltage Apparatus Vol. 62, Issue 2, Pages: 176-182(2026)
- 作者机构：
  
  三峡大学电气与新能源学院，湖北宜昌 443002
  国网安徽省电力有限公司电力科学研究院，合肥 230601
  中国电力科学研究院有限公司武汉分院，武汉 430074
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2026.02.022
  CLC：
- Received：02 July 2025，
  
  Revised：2025-10-21，
  
  Published：16 February 2026
- 稿件说明：
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LI Zhenhua, WEI Yinkong, HUANG Yuehua, et al. Analysis and Research on the Influencing Factors of Ground Induced Synthetic Electric Field of±800 kV DC Transmission Line[J]. High Voltage Apparatus, 2026, 62(2): 176-182.
DOI：

LI Zhenhua, WEI Yinkong, HUANG Yuehua, et al. Analysis and Research on the Influencing Factors of Ground Induced Synthetic Electric Field of±800 kV DC Transmission Line[J]. High Voltage Apparatus, 2026, 62(2): 176-182. DOI： 10.13296/j.1001-1609.hva.2026.02.022.

摘要

高压直流线路下方地面合成电场易受到线路本身结构和环境风速的影响，且下方房屋对地面合成电场有畸变作用。基于上述问题，提出一种合成电场数值仿真模型，以探究上述变量对地面合成电场的影响规律，采用Comsol仿真分析了线路结构和风速对地面合成电场的影响规律以及线路下方房屋结构对电场的畸变作用。分析表明：在线路结构中，导线对地高度对地面合成场强影响最大，其他线路结构对地面合成场强的影响不大；当风速小于3 m/s时，顺风侧的地面场强增大，但风速大于3 m/s之后地面场强会减小；对于线路下方房屋参数中，房屋高度对地面电场的畸变作用最大，房屋净高相同时，平面屋顶内部利用空间大，屋顶对电场的畸变最小。

Abstract

The ground-induced synthetic electric field beneath the high voltage DC line is susceptible to the influence of the structure of the line itself and the ambient wind speed，and the house beeanth the line has a distortion effect on the ground-induced synthetic electric field. Based on the above problems，a synthetic electric field numerical simulation model is proposed to explore the influence of above variables on the ground-induced synthetic electric field. The Comsol simulation is used to simulate and analyze the influence of line structure and wind speed on the ground-induced synthetic electric field and the distortion effect of the house structure beneath the line on the electric field. The analysis shows that in the line structure，the influence of the height from the condutor to the ground on the ground-induced synthetic field strength is maximum

and the influence of other line structures on the ground synthetic field strength is insignificant.In case of the wind speed less than 3 m/s，the ground field strength of the upwind side increases，however the ground field strength will decrease after the wind speed is greater than 3 m/s. Regarding the parameters of the houses beneath the line，the distortion effect of the height of the houses on the ground electric field distortion effect is maximum.In case identical net height of houses，the internal utilization space of the flat roof is large and the distortion of the top roof on the electric field is minimum.

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