Corona onset voltage gradient of bundle conductors for EHV/UHV AC power lines in corona cages considering altitude correction

Shilong Huang; Yunpeng Liu; Shaoshuai Chen; Daran Liu; Wangling He; Baoquan Wan

doi:10.17775/CSEEJPES.2018.00810

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Corona onset voltage gradient of bundle conductors for EHV/UHV AC power lines in corona cages considering altitude correction

Regular Papers | 更新时间：2026-10-15

- Corona onset voltage gradient of bundle conductors for EHV/UHV AC power lines in corona cages considering altitude correction
- Corona onset voltage gradient of bundle conductors for EHV/UHV AC power lines in corona cages considering altitude correction
- 中国电机工程学会电力与能源系统学报(英文) 2020年6卷第3期页码：693-703
- 作者机构：
  
  1. School of Electrical Engineering, North China Electric Power University,Beijing,China
  2. School of Electrical Engineering, Wuhan University,Wuhan,China
  3. China Electric Power Research Institute,Beijing,China
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2018.00810
  中图分类号：
- 纸质出版：2020-09-01
- 稿件说明：
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Shilong Huang, Yunpeng Liu, Shaoshuai Chen, 等. Corona onset voltage gradient of bundle conductors for EHV/UHV AC power lines in corona cages considering altitude correction[J]. 中国电机工程学会电力与能源系统学报(英文), 2020,6(3):693-703.

Shilong Huang, Yunpeng Liu, Shaoshuai Chen, et al. Corona onset voltage gradient of bundle conductors for EHV/UHV AC power lines in corona cages considering altitude correction[J]. CSEE Journal of Power and Energy Systems, 2020, 6(3): 693-703.
Shilong Huang, Yunpeng Liu, Shaoshuai Chen, 等. Corona onset voltage gradient of bundle conductors for EHV/UHV AC power lines in corona cages considering altitude correction[J]. 中国电机工程学会电力与能源系统学报(英文), 2020,6(3):693-703. DOI： 10.17775/CSEEJPES.2018.00810.

Shilong Huang, Yunpeng Liu, Shaoshuai Chen, et al. Corona onset voltage gradient of bundle conductors for EHV/UHV AC power lines in corona cages considering altitude correction[J]. CSEE Journal of Power and Energy Systems, 2020, 6(3): 693-703. DOI： 10.17775/CSEEJPES.2018.00810.

摘要

Abstract

The corona onset voltage gradient (COG) of conductors is a key parameter in the design of overhead transmission lines. The commonly used semi-empirical calculation formula proposed by Peek (1910s) at present can roughly estimate the COG of single conductors and is not applicable to large cross-section bundle conductors. In this paper

experiments are conducted to investigate the corona characteristics of a whole series of bundle conductors at different altitudes

and a prediction formula is proposed for the COG of large cross-section bundle conductors on AC transmission lines considering the altitude correction. The calculated values using the proposed prediction formula are compared with the experimental values of the COG in two cases: UHV eight-bundle conductors at an altitude of 19 m; 500 kV UHV four-bundle conductors in Wuhan

Xining

Geermu

and Nachitai at four different altitudes. The results show that the use of the formula can predict the COG of bundle conductors with the radius of 1.34 cm to 1.995 cm and the number of sub-conductors of 4 to 12 at altitudes of 19 m to 4000 m above the mean sea level. The research findings can provide a reference for the design of EHV and UHV overhead transmission lines and even those in higher voltage levels.

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