高电压技术2011，Vol.37Issue(4)：848-853,6.
不同地形条件下架空配电线路的防雷分析
Comprehensive Analysis of Lightning Performance of Overhead Power Distribution Line with Varied Ground Obliquity
摘要
Abstract
In order to take lightning problem into consideration comprehensively, we introduced a new model for calculating the lightning outage rate of overhead power distribution line due to direct and indirect lightning strokes. By establishing an improved EGM model of overhead distribution line based on striking distance theory, combining with probability density function of lightning current, we solved the attract range of overhead line, which possesses a nonlinear relationship with line height for different district. Taking the Rusck's formula into consideration, basing on Generalized Integral method, we put forward a new arithmetic for calculating the lightning outage rate which includes indirect lightning. By calculation of two real 10 kV power distribution line, the new method is practical and accurate. The results show that indirect strokes are the main cause of lightning trip out, and for analyzing the lightning performance of overhead power distribution lines, the indirect lightning must be taken into consideration.关键词
架空配电线路/雷击跳闸率/电气几何模型/雷击距/引雷范围/感应雷击Key words
overhead distribution line/ lightning outage rate/ electro-geometric model (EGM)/ striking distance/ at-tract range/ indirect lightning分类
信息技术与安全科学引用本文复制引用
刘靖,刘明光,屈志坚,刘铁..不同地形条件下架空配电线路的防雷分析[J].高电压技术,2011,37(4):848-853,6.基金项目
国家自然科学基金(51007023). （51007023）
