中国电机工程学报2012，Vol.32Issue(31)：191-199,前插25,10.
架空配电线路雷电感应过电压计算研究
Calculation of Lightning Induced Overvoltage on Overhead Distribution Lines
摘要
Abstract
In order to study the characteristics of the lightning induced overvoltage, the deficiencies of available lightning induced overvoltage algorithms were analyzed and an improved algorithm was proposed. In the improved algorithm, lightning induced overvolatge calculation was performed in two steps: lightning electromagnetic pulse calculation and transient response of multi-conductor transmission lines excited by lightning electromagnetic pulse calculation. The improved algorithm considered the impacts of earth loss on lightning electromagnetic pulse and transient processes on multi-conductors, and also considered the line has branches and lumped parameter elements. As a validation, simulation of rocket triggered lightning induced overvoltage experiment was conducted and showed good correspondence with simulation results. In addition, the lightning induced overvoltage characteristics were analyzed. The results show that: the lightning induced overvoltage is short-tail impulse; the maximum value appears on the line where closest to lightning striking point, and attenuate gradually along the line, the larger earth loss, the larger maximum value, but in faster attenuation. The maximum amplitude of lightning induced overvoltage is affected obviously by branches, but affected hardly by return stroke velocity. There are non-linear relationships between the maximum amplitude of lightning induced overvoltage and line height, as well as the distance line to striking point.关键词
架空配电线路/雷电电磁脉冲/雷电感应过电压/传输线模型/特性分析Key words
overhead distribution lines/ lightning electromagnetic pulse/ lightning induced overvoltage/transmission line model/ characteristic analysis分类
信息技术与安全科学引用本文复制引用
边凯,陈维江,李成榕,沈海滨..架空配电线路雷电感应过电压计算研究[J].中国电机工程学报,2012,32(31):191-199,前插25,10.基金项目
国家自然科学基金重点项目(50737003) （50737003）
"十一五"国家科技支撑计划项目(2009BAG12A09). （2009BAG12A09）
