南方电网技术2017，Vol.11Issue(6)：15-21,7.DOI:10.13648/j.cnki.issn1674-0629.2017.06.003
山火对±800 kV输电线路下电场影响的仿真分析
Simulation Analysis on Influence of Forest Fire on Electric Field Under ±800 kV Transmission Line
祝贺 1刘程1
作者信息
- 1. 东北电力大学建筑工程学院,吉林 吉林 132012
- 折叠
摘要
Abstract
Under the influence of flames with high temperature, high conductivity, solid particles and other factors, the electric field around UHVDC transmission lines increases significantly, which may cause trip of the transmission line.In this paper, taking Yun-Guang UHVDC transmission lines as the example, simulation studies are conducted to analyze the influence of charge density and particulates in forest fire on electric field under ±800 kV transmission line through Comsol software.Research shows that the maximum electric field strength increases significantly, up to 47 times higher than that under normal operating conditions when the flame charge density reaches 1014 m-3 under stable combustion condition, the particles may cause distortion of the electric field, when the flame charge density reaches 1014 m-3,the distortion value can reach 7.5 times of which under normal operating conditions, the distortion of the electric field caused by solid particles increases with the increase of the long axis and the decrease of the short axis.关键词
山火/特高压直流/输电线路/电场/仿真研究Key words
forest fire/UHVDC/transmission lines/electric field/simulation research分类
信息技术与安全科学引用本文复制引用
祝贺,刘程..山火对±800 kV输电线路下电场影响的仿真分析[J].南方电网技术,2017,11(6):15-21,7.
