自然闪电多脉冲雷电流等效模型的研究  

Research on the Equivalent Model of Natural Lightning Multi-Pulse Lightning Current

作　　者：杨仲江[1,2] 王梧熠 于忠江 

机构地区：[1]南京信息工程大学中国气象局气溶胶-云-降水重点开放实验室,南京210044 [2]南京信息工程大学大气物理学院,南京210044

出　　处：《电瓷避雷器》2018年第1期46-50,共5页Insulators and Surge Arresters

基　　金：国家重点基础研究发展计划(973计划)资助项目(编号:2014CB441405);国家自然科学基金资助项目(编号:41075025);江苏高校优势学科建设工程资助项目(PADA)

摘　　要：目前对于雷电流波形的研究大都是单脉冲模型,架空线路的感应雷过电压研究、建筑物防雷、光伏、电子信息以及通讯等系统的防雷也是基于单脉冲的研究,而自然闪电中多脉冲比例高达70%。从多脉冲雷电流峰值I_(max),雷电流最大陡度(di/dt)_(max),上升到峰值的时间t_p,转移电荷量Q四个角度建立了多脉冲等效模型,并提出了计算模型参数的图解法与数值分析方法,对指导今后的多脉冲下建筑物雷电过电压保护,自然闪电电磁脉冲保护以及雷电电磁场的计算等研究有重要意义。Now the research of lightning current waveform is mostly single pulse model, lightning in- duction lightning overvoltage on overhead transmission line, lightning protection, building photovohaic, electronic information and communication system is based on the study of single pulse, however the multi pulse ratio is as high as 70% in natural lightning. The multi pulse equivalent model is established from the four aspects of multi pulse peak lightning current is IMAX, the maximum lightning steepness is （di/ dt） max, the time for rising to the peak is TP, charge transfer of Q, and the graphic method and numerical analysis method of calculating model parameters are proposed, has important significance to guide the future lightning over-voltage protection of buildings under the multi pulse, natural lightning electro- magnetic pulse protection and lightning electromagnetic field calculation.

关 键 词：雷电流波形 闪电能量 脉冲函数 数值模拟 

分 类 号：TM86[电气工程—高电压与绝缘技术]