3-D Simulation of Ion Flow Fields Across the Span of UHVDC Transmission Lines

LI Yongming; LI Wen; ZHANG Huaiqing

doi:10.13296/j.1001-1609.hva.2014.04.004

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3-D Simulation of Ion Flow Fields Across the Span of UHVDC Transmission Lines

更新时间：2025-04-26

- 3-D Simulation of Ion Flow Fields Across the Span of UHVDC Transmission Lines
- High VoltageApparatus Vol. 50, Issue 4, Pages: 17-22(2014)
- 作者机构：
  
  重庆大学输配电装备及系统安全与新技术国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2014.04.004
  CLC： TM721.1
- Published：2014
- 稿件说明：
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[1]李永明,李稳,张淮清.特高压直流输电线路档距内离子流场的三维计算[J].高压电器,2014,50(04):17-22.

LI Yongming, LI Wen, ZHANG Huaiqing. 3-D Simulation of Ion Flow Fields Across the Span of UHVDC Transmission Lines[J]. High voltageapparatus, 2014, 50(4): 17-22.
[1]李永明,李稳,张淮清.特高压直流输电线路档距内离子流场的三维计算[J].高压电器,2014,50(04):17-22. DOI： 10.13296/j.1001-1609.hva.2014.04.004.

LI Yongming, LI Wen, ZHANG Huaiqing. 3-D Simulation of Ion Flow Fields Across the Span of UHVDC Transmission Lines[J]. High voltageapparatus, 2014, 50(4): 17-22. DOI： 10.13296/j.1001-1609.hva.2014.04.004.

摘要

传统的特高压直流输电线路离子流场的计算采用二维模型

不能正确反映档距内考虑弧垂时的电场分布。笔者采用模拟电荷法计算标称电场

结合输电线满足的悬链线方程

考虑极导线表面电场的变化

对特高压直流输电线路档距内的离子流场进行了三维仿真计算

将结果与实测值进行了比较并做了分析。考虑弧垂时的地面合成电场值比不考虑弧垂时小

合成电场在垂直输电线方向和沿着输电线方向均呈对称分布

最大场强出现在在最大弧垂点边导线外侧2 m左右

随着远离弧垂最大处

合成电场在垂直和沿着输电线方向逐渐衰减。

Abstract

The two-dimensional model for calculating UHVDC transmission lines’ ion flow field is unable to correctly reflect the distribution of electric field when the sag in a span is considered. In this paper

we use the charge simulation method for calculation of nominal field

and conduct a 3-D simulation of the UHVDC transmission lines’ ion flow field by adopting the catenary equation that fits transmission line and considering the change of the electric field on conductor surface. The simulation results are compared with the measured values

and the results indicate that: ① the composite electric field on the ground gets weaker if the sag is considered; ② the distribution of the composite electric field is symmetrical in the directions along and vertical to the line with a maximum field strength at outside of the line two meters away from the maximum sag point; ③the composite electric field gets decaying gradually in the directions along and vertical to the transmission lines with the increasing distance to the maximum sag point.

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