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火焰高度对输电线路间隙击穿特性的影响
引用本文:陈孝明,魏晗,阮羚,黄道春,黄俊杰,黎鹏,熊宇,阮江军,张亚飞.火焰高度对输电线路间隙击穿特性的影响[J].中国电力,2015,48(7):134-138.
作者姓名:陈孝明  魏晗  阮羚  黄道春  黄俊杰  黎鹏  熊宇  阮江军  张亚飞
作者单位:1. 国网湖北省电力公司电力科学研究院,湖北 武汉 430077;
2. 武汉大学 电气工程学院,湖北 武汉 430072
摘    要:山火可使架空输电线路间隙的绝缘强度显著下降,可能引发线路跳闸,导致线路出现停运的严重事故。近年来,山火频发给电网的安全稳定运行带来了巨大威胁。利用木垛火模拟山火,开展了火焰高度对模拟输电线路间隙击穿特性的影响研究。研究表明,火焰高度对间隙的击穿特性影响较大,火焰高度与击穿电压之间具有二次函数关系。研究成果可为输电线路防山火跳闸提供一定的指导。

关 键 词:输电线路  山火  击穿特性  火焰高度  线路跳闸  
收稿时间:2015-03-19

Study on the Influence of Flame Height on Gap Breakdown Characteristics of Transmission Lines
CHEN Xiaoming,WEI Han,RUAN Ling,HUANG Daochun,HUANG Junjie,LI Peng,XIONG Yu,RUAN Jiangjun,ZHANG Yafei,QIN Zhihang.Study on the Influence of Flame Height on Gap Breakdown Characteristics of Transmission Lines[J].Electric Power,2015,48(7):134-138.
Authors:CHEN Xiaoming  WEI Han  RUAN Ling  HUANG Daochun  HUANG Junjie  LI Peng  XIONG Yu  RUAN Jiangjun  ZHANG Yafei  QIN Zhihang
Affiliation:1. Electric Power Research Institute of Hubei Electric Power Company, Wuhan 430077, China;2. School of Electrical Engineering, Wuhan University, Wuhan 430072, China
Abstract:Forest fires can make the gap insulation strength of overhead transmission lines decrease significantly, which may cause transmission-line tripping and lead to serious power outage accidents. In recent years, frequent forest fires have brought a great threat to the safety of the power grid. In this paper, wood-chock fire is used to study the influence of flame height on the gap breakdown characteristics of transmission lines. The simulated results show that the flame height has a significant effect on the gap breakdown characteristics and the flame height and breakdown voltage have a relationship of quadratic function, which can provide an useful guidance for tripping prevention of transmission lines in case of forest fires.
Keywords:transmission line  forest fire  breakdown characteristics  flame height  line tripping
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