电工技术学报  2018, Vol. 33 Issue (1): 195-201    DOI: 10.19595/j.cnki.1000-6753.tces.160912
高电压与绝缘 |
模拟山火条件下导线-板间隙击穿特性影响因素分析
黎鹏, 阮江军, 黄道春, 魏晗, 秦知航, 龙明洋
武汉大学电气工程学院 武汉 430072
Influence Factors Analysis of the Conductor-Plane Gap Breakdown Characteristic under Simulation Forest Fire Condition
Li Peng, Ruan Jiangjun, Huang Daochun, Wei Han, Qin Zhihang, Long Mingyang
School of Electrical Engineering Wuhan University Wuhan 430072 China
全文: PDF (572 KB)  
输出: BibTeX | EndNote (RIS)      
摘要 利用模拟山火试验平台,开展导线-板间隙在不同燃烧条件下的工频击穿特性,分析植被类型、燃烧强度、风速和坡度等因素对间隙击穿特性的影响机制。结果表明:不同类型植被火焰下,间隙的击穿特性差异较大,杉树枝叶和杉树干火焰下,间隙的工频击穿电压分别约下降为纯空气间隙的10%和20%;当火焰桥接全部间隙时,植被燃烧强度对间隙击穿特性的影响较小;随着坡度的增加,火焰间隙的绝缘强度出现大幅度下降。因此,对实际输电线路,需重点关注坡度较大的地方,特别是“V”形山谷位置,更易出现山火引发线路跳闸事故。
服务
把本文推荐给朋友
加入我的书架
加入引用管理器
E-mail Alert
RSS
作者相关文章
黎鹏
阮江军
黄道春
魏晗
秦知航
龙明洋
关键词 山火输电线路击穿特性风速坡度    
Abstract:The AC breakdown characteristics of conductor-plane gap under different combustion conditions were carried by the simulation forest fire test platform in this paper, and the influence mechanisms of vegetation types, combustion intensity, wind speed and slope gradient on the breakdown characteristic of gap have been analyzed. Results show that, the breakdown characteristics of gap have big differences under different vegetation types flame. Under the conditions of fir branches and fir wood crib flames, the AC breakdown voltage of gap can decline to about 10% and 20% of that in the pure air gap, respectively. When the gap is full bridged by the flame, the combustion intensity has little influence on the breakdown characteristics of gap. The dielectric strength of gap is remarkably decreased with the increase of slope gradient. Hence, to the actual transmission lines, it is need to focus on the place with bigger slope gradient. Especially the location of "V" shape valley, which is more likely to appear the tripping accidents due to the forest fire.
Key wordsForest fire    transmission line    breakdown characteristic    wind speed    slope gradient   
收稿日期: 2016-08-20      出版日期: 2018-01-16
PACS: TM85  
基金资助:国家自然科学基金面上项目资助(51677138)
作者简介: 黎 鹏 男,1989年生,博士研究生,研究方向为高压电器和外绝缘。E-mail:lipeng19891102@126.com(通信作者)阮江军 男,1968年生,博士,教授,研究方向为电磁场数值计算、高电压与绝缘技术。E-mail:ruan308@126.com
引用本文:   
黎鹏, 阮江军, 黄道春, 魏晗, 秦知航, 龙明洋. 模拟山火条件下导线-板间隙击穿特性影响因素分析[J]. 电工技术学报, 2018, 33(1): 195-201. Li Peng, Ruan Jiangjun, Huang Daochun, Wei Han, Qin Zhihang, Long Mingyang. Influence Factors Analysis of the Conductor-Plane Gap Breakdown Characteristic under Simulation Forest Fire Condition. Transactions of China Electrotechnical Society, 2018, 33(1): 195-201.
链接本文:  
https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.160912          https://dgjsxb.ces-transaction.com/CN/Y2018/V33/I1/195