基于IEC标准雷电后续回击电磁场的计算  

The Electromagnetic Fields Calculation of Lightning Subsequent Return-Stroke Based on IEC Standards

作　　者：田明宏[1] 魏光辉[1] 刘尚合[1] 毕增军[1] 

机构地区：[1]军械工程学院静电与电磁防护研究所,河北石家庄050003

出　　处：《电子学报》2003年第6期951-954,共4页Acta Electronica Sinica

基　　金：国家自然科学基金资助项目 (No 50 0 770 2 4 ) ;国家自然科学基金重点资助项目 (No 50 2 370 4 0 )

摘　　要：基于IEC标准雷电回击电流 ,用击穿电流和电晕电流两种成分对雷电后续回击标准电流进行拆分拟合 .用一种新型脉冲函数表示回击中击穿电流 ,电晕电流用双指数函数表达 .然后基于DU模型 ,合理地选取了两种电流成分的放电时间常数 ,并对雷电标准后续回击电磁场分布进行了计算 ,计算结果比较符合雷电回击电磁场测量波形的四个特征 .In this paper,the standard current of lightning subsequent return-stroke is splited into a breakdown current and a corona current based on IEC1312-1.The breakdown current and the corona current are represented by a new pulse function and a double exponential function respectively.The subsequent return stroke standard current is fitted and some parameters are obtained.We assume for the electromagnetic fields calculating of lightning subsequent return-stroke a breakdown discharge time constant and a corona discharge time constant based on DU model.The characteristic features of calculated field waveforms are similar to those of the typical field waveforms.

关 键 词：DU模型 脉冲函数 电磁脉冲 雷电 

分 类 号：TM863[电气工程—高电压与绝缘技术]