Improving Power Frequency Electric Field Distribution of Transmission Lines by Shielding Lines

YANG Tao1; ZHAO Ke-jiang2; LIU Yu-gen3; TIAN Jin-hu2

doi:10.13296/j.1001-1609.hva.2013.03.016

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Improving Power Frequency Electric Field Distribution of Transmission Lines by Shielding Lines

更新时间：2025-04-26

- Improving Power Frequency Electric Field Distribution of Transmission Lines by Shielding Lines
- High VoltageApparatus Vol. 49, Issue 3, Pages: 91-98(2013)
- 作者机构：
  
  1. 重庆市电力公司
  2. 重庆市电力公司检修分公司
  3. 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.2013.03.016
  CLC： TM751
- Published：2013
- 稿件说明：
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[1]杨滔,赵克江,刘渝根,田金虎.屏蔽线改善架空输电线路工频电场分布研究[J].高压电器,2013,49(03):91-98.

YANG Tao1, ZHAO Ke-jiang2, LIU Yu-gen3, et al. Improving Power Frequency Electric Field Distribution of Transmission Lines by Shielding Lines[J]. High voltageapparatus, 2013, 49(3): 91-98.
[1]杨滔,赵克江,刘渝根,田金虎.屏蔽线改善架空输电线路工频电场分布研究[J].高压电器,2013,49(03):91-98. DOI： 10.13296/j.1001-1609.hva.2013.03.016.

YANG Tao1, ZHAO Ke-jiang2, LIU Yu-gen3, et al. Improving Power Frequency Electric Field Distribution of Transmission Lines by Shielding Lines[J]. High voltageapparatus, 2013, 49(3): 91-98. DOI： 10.13296/j.1001-1609.hva.2013.03.016.

摘要

为改善架空输电线路下方工频电场分布

在线路下方架设屏蔽线。考虑线路档距、弧垂等因素的影响

建立高压架空输电线路工频电场三维仿真计算模型

研究架设屏蔽线改善高压输电线路下方工频电场的效果

分析讨论了屏蔽线架设高度、横向位置、间距、根数等对线路下方及表面工频电场影响的规律和特征。结果表明:架设屏蔽线能够有效改善导线下方空间工频电场;屏蔽线架设高度、横向位置对屏蔽效果影响明显

存在最佳布置位置;屏蔽线间距对其屏蔽效果有一定影响;屏蔽线根数越多

效果越好

但逐渐趋于平缓;架设屏蔽线会增大分裂导线表面电场强度。

Abstract

Installing shielding lines under transmission lines can improve the power frequency electric field intensity under the transmission lines.According to the actual situation of the transmission lines

a three-dimensional electric field calculation model is established based on the formula of overhead catenary with sag to calculate the electric field intensity under the transmission lines with shielding lines.Some influencing factors

such as shielding lines’ height

transverse position

distance among the shielding lines

number and so on

on the power frequency electric field intensity under the transmission lines are analyzed.The results show that shielding lines can significantly improve the power frequency electric field distribution under the transmission lines.The shielding lines’ height and transverse position influence the shielding effect significantly.The distance among shielding lines has certain influence on the power frequency electric field distribution under the transmission lines.The more the shielding lines are

the better the shielding effect is

but the improvement becomes weaker.The shielding lines can enhance the surface electric field intensity of bundle conductors.

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