摘要
微地形是影响雷击跳闸的一个重要且复杂的因素。为此,基于地理信息系统(GIS)及Excel软件对微地形因素影响雷击输电线路的规律进行了探索。在介绍了基于GIS输电线路及雷击信息文件形成的基础上,根据电力公司积累的输电线路实际雷击基础数据,将输电线路雷击点与GIS中的地形地貌相结合进行分析,得出了110、220、500kV电压等级输电线路雷击故障相位与输电线路暴露面的相关性规律,并探索发现了包括杆塔位于高山山顶、输电线路大跨越河流或山谷、沿山脊走向、处于迎风坡上、经过水域边等微地形因素影响雷击选择性的特点。研究结果表明,该统计分析方法具有直观、形象的特点,研究结论可为输电线路路径的设计及防雷措施的选择提供参考。
Microtopography is an important and complicated factor of affecting lightning strike trip-out. The rule of how microtopography affects lightning strike to the transmission line is explored based on geographic information systems（GIS） and Excel. How to form the files of transmission line and lightning strike information by using GIS is introduced. Combined with the microtopography of GIS, lightning strike data collected from the electric power company are analyzed. The correlation rules between exposed surface and fault phases of 110, 220 and 500 kV transmission lines caused by lightning strike are obtained. And some characteristics of lightning selectivity affected by micro-topography factors including peak, river, valley, mountain ridge, windward slope and so on are explored. The resuits show that this statistic analysis method is very intuitive and imaginal. And the results can provide references for the path design of transmission line and the selection of lightning protection measures.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2009年第6期1362-1369,共8页
High Voltage Engineering
基金
国家电网公司重大科技创新项目(科2006-92
科2007-45)~~
关键词
GIS
输电线路
雷击
微地形
雷击选择性
KML
统计分析
GIS
transmission line
lightning
microtopography
lightning selectivity
keyhole markup language
statistic analysis
