高压电器2025，Vol.61Issue(7)：16-26,11.DOI:10.13296/j.1001-1609.hva.2025.07.003
基于风速—风向联合分布的UHVDC线路合成场及评估技术研究
Study on Total Electric Field and Assessment Technology of UHVDC Lines Based on Joint Distribution of Wind Speed and Direction
秦子翌 1陈炯 1任茂鑫 2尹凡 2方圆圻2
作者信息
- 1. 上海电力大学,上海 200090
- 2. 国家电网有限公司华东分部,上海 200120
- 折叠
摘要
Abstract
The ion flow formed by UHVDC lines migrates under the influence of wind force,which makes the quan-titative assessment of the the ion flow density ρj and the total electric field E difficult due to the territoriality and sto-chasticity.Presently,the assessment of E considering wind force doesn't take into account the correlation between wind speed and direction,and lacks the simulation of the ion flow under different wind directions.Therefore,in this paper the±800 kV line is taken as an example,the total field finite element model of the traditional 2D line is ex-panded to 3D,the variation of E and ρj under the influence is obtained.Moreover,the probability model is construct-ed by the Copula function to propose a kind of safety assessment technology.The results show that the wind speed determines diffusion degree of space charge and the wind direction determines its diffusion trajectory.The increase of wind speed makes ρj and E increase firstly and then decrease,and the reduction of the included angle between the wind direction and the line orientation causes the wind force to weaken.The wind speed-wind direction distribu-tion shall be fully considered to control the design margin of the line.The set up height of the±800 kV line can be reduced down to 22 m and,at this time,95.08%of the E statistical values are still within the E95 limit.关键词
特高压直流/合成电场/离子流场/Copula函数/风速—风向联合分布/概率统计/安全评估Key words
UHVDC/total electric field/ion flow/finite element/Copula/joint wind speed-direction distribu-tion/statistics/safety assessment引用本文复制引用
秦子翌,陈炯,任茂鑫,尹凡,方圆圻..基于风速—风向联合分布的UHVDC线路合成场及评估技术研究[J].高压电器,2025,61(7):16-26,11.
