广东电力2025，Vol.38Issue(12)：95-103,9.DOI:10.3969/j.issn.1007-290X.2025.12.009
植被火条件下导线-板长空气间隙放电电弧特性的多因素影响规律
Multi-factor Influence Laws of Conductor-plane Long Air Gap Discharge Arc Characteristic Under Vegetation Fire Conditions
摘要
Abstract
Overhead transmission lines are prone to trip and outages due to wildfire,seriously threatening the secure and stable operation of power grids.To proactively prevent wildfire-induced tripping faults,it is essential to investigate the discharge arc characteristics of conductor-plane long air gap under vegetation fire conditions.Therefore,this study establishes an experimental platform simulating gap discharge under real wildfire conditions and analyzes the discharge process with focused investigation on five key factors affecting the discharge arc characteristics of conductor-plane long air gaps including gap distance,semi-bridging flames,fully-bridging flames,large-size smoke particles,and pure smoke.The results show that air gap discharge arc development can be divided into four stages including the pre-discharge stage,the gap penetration stage,the continuous discharge stage and the arc extinction stage.Flames significantly degrade gap insulation strength,exhibiting mutual attraction between flames and arcs,with distinct color differences between flame-zone and air-zone arcs.At the same flame bridging ratio,as the gap distance increases,the discharge arc becomes thicker,energy is higher,and discharge development becomes more difficult.For arc discharge path development priority,flame over hot air flow,hot air flow over smoke particles.关键词
输电线路/植被火/长空气间隙/放电电弧/放电特性Key words
transmission line/vegetation fire/long air gap/discharge arc/discharge characteristic分类
信息技术与安全科学引用本文复制引用
周恩泽,王磊,魏瑞增..植被火条件下导线-板长空气间隙放电电弧特性的多因素影响规律[J].广东电力,2025,38(12):95-103,9.基金项目
中国南方电网有限责任公司科技项目(GDKJXM20222564) （GDKJXM20222564）
