[1]张施令.钢芯铝绞线表面电场分布及其电晕起始场强分析[J].高压电器,2018,54(04):107-112.[doi:10.13296/j.1001-1609.hva.2018.04.016]
 ZHANG Shiling.Analysis on Surface Electric Field Distribution and Corona Inception Electric Field Strength of Stranded Conductor[J].High Voltage Apparatus,2018,54(04):107-112.[doi:10.13296/j.1001-1609.hva.2018.04.016]
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钢芯铝绞线表面电场分布及其电晕起始场强分析()
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《高压电器》[ISSN:1001-1609/CN:61-11271/TM]

卷:
第54卷
期数:
2018年04期
页码:
107-112
栏目:
研究与分析
出版日期:
2018-04-30

文章信息/Info

Title:
Analysis on Surface Electric Field Distribution and Corona Inception Electric Field Strength of Stranded Conductor
作者:
张施令
国网重庆市电力公司电力科学研究院, 重庆 401123
Author(s):
ZHANG Shiling
State Grid Chongqing Electric Power Company Chongqing Electric Power Research Institute, Chongqing 401123, China
关键词:
钢芯铝绞线 电场分布 电晕起始场强 有限元法
Keywords:
stranded conductor electric field distribution corona inception electric field strength FEM
DOI:
10.13296/j.1001-1609.hva.2018.04.016
文献标志码:
A
摘要:
钢芯铝绞线广泛应用于交流输电线路中,绞线表面电晕是输电线路运行中需考虑的重要问题之一,因此有必要对钢芯铝绞线表面电场分布及其电晕起始场强进行分析。文中运用有限元法提出了钢芯铝绞线表面电场分布及其电晕起始场强的计算方法,计算结果表明:运用有限元法能较准确计算绞线周围的精细电场分布,等半径的光滑导线和绞线表面最大场强相差约28%;绞线电晕起始电压决定于绞线周围电场分布,且随绞线半径的增大和最外层股数的增加,电晕起始电压逐渐升高并呈现饱和趋势。提出的计算方法和所得结论可为交流输电线路的设计提供理论依据。
Abstract:
Stranded conductor is widely used in the AC transmission line, and corona of stranded conductor is one of the key problems in the operation of transmission line, so it is necessary to analyze the surface electric field distribution and corona inception voltage of stranded conductors. In this paper, the calculation method of surface electric field distribution and corona inception voltage of stranded conductors using finite element method(FEM)is proposed. The calculation results show that: the FEM can accurately calculate the fine electric field distribution, the maximum field strength difference between the smooth conductor and stranded conductor with the same radius is about 28%. Moreover, the corona inception voltage increases with the increase of the overall conductor radius and the number of external strands, and tends to be saturated. The calculation method and conclusions presented in this paper provide the theoretical basis for the design of the AC transmission lines.

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备注/Memo

备注/Memo:
张施令(1986—),男,博士,高级工程师,研究方向为超/特高压电力设备绝缘结构优化设计及SF6气体绝缘电力设备运行状态监测与寿命评估。
更新日期/Last Update: 2018-04-25