±800 kV UHVDC Transmission Line Using Asymmetric Division to Reduce Corona Loss

XIAO Ying-tao1; CHAI Xian-dong2; LI Yong-ming2; ZHANG Huai-qing2; CHEN Xiao-xin3

doi:10.13296/j.1001-1609.hva.2013.04.005

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±800 kV UHVDC Transmission Line Using Asymmetric Division to Reduce Corona Loss

更新时间：2025-04-26

- ±800 kV UHVDC Transmission Line Using Asymmetric Division to Reduce Corona Loss
- High VoltageApparatus Vol. 49, Issue 4, Pages: 14-19(2013)
- 作者机构：
  
  1. 阜阳供电公司经研所
  2. 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
  3. 黄冈电力公司变电检修中心
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2013.04.005
  CLC： TM75
- Published：2013
- 稿件说明：
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[1]肖颍涛,柴贤东,李永明,张淮清,陈晓鑫.±800kV特高压直流线路采用不均匀分裂降低电晕损耗[J].高压电器,2013,49(04):14-19.

XIAO Ying-tao1, CHAI Xian-dong2, LI Yong-ming2, et al. ±800 kV UHVDC Transmission Line Using Asymmetric Division to Reduce Corona Loss[J]. High voltageapparatus, 2013, 49(4): 14-19.
[1]肖颍涛,柴贤东,李永明,张淮清,陈晓鑫.±800kV特高压直流线路采用不均匀分裂降低电晕损耗[J].高压电器,2013,49(04):14-19. DOI： 10.13296/j.1001-1609.hva.2013.04.005.

XIAO Ying-tao1, CHAI Xian-dong2, LI Yong-ming2, et al. ±800 kV UHVDC Transmission Line Using Asymmetric Division to Reduce Corona Loss[J]. High voltageapparatus, 2013, 49(4): 14-19. DOI： 10.13296/j.1001-1609.hva.2013.04.005.

摘要

为了提高特高压直流输电线路的输送容量、优化线路周围的电磁环境、压缩输电线路走廊宽度

一般采用分裂导线。笔者考虑分裂导线表面电场分布不均的条件下

采用模拟电荷法较准确计算特高压直流分裂传输线的电晕损耗

地面合成电场和离子流密度。定量地分析不同子导线电晕损耗的差异

提出一种不均匀分裂结构线路。算例分析对比表明

采用不均匀分裂结构线路

地面合成电场和离子流密度略有增加

但其总的电晕损耗有较明显的下降

在不增加线路建设成本的情况下能产生很大的经济效益。

Abstract

Bundle conductors are widely used in the high voltage direct current（HVDC）power transmission in order to possess a higher line capacity

to optimize the electromagnetic environment

and to narrow down the width of transmission line corridor.In this paper

under the condition of considering the bundle conductor surface electric field distribution

the charge simulation method is used to calculate the UHV DC bundle transmission line corona loss

total ground electric field strength and ion current density.Quantitative analysis of different sub conductor corona loss difference is made and a kind of asymmetric division structure line is suggested.The example analysis shows that

by using asymmetric division structure line

total ground electric field strength and ion current density increased slightly

but its total corona loss has decreased significantly.It can produce great economic benefits without increasing the lines construction cost.

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