雷电流信号的频谱与陡度性能分析  

Spectrum and steepness performance analysis of lightning current signals

作　　者：李顺 行鸿彦[1,2,3] 易秀成 Li Shun;Xing Hongyan;Yi Xiucheng(Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,Nanjing University of Information Science&Technology,Nanjing 210044,China;E-lord Lightning Protection Technology Research Institute,Nanjing University of Information Science&Technology,Nanjing 210044,China;Hangzhou E-lord Lightning Protection Technology Co.,Ltd,Hangzhou 310051,China)

机构地区：[1]南京信息工程大学气象灾害预报预警与评估协同创新中心,南京210044 [2]南京信息工程大学易龙防雷技术研究院,南京210044 [3]杭州易龙防雷科技有限公司,杭州310051

出　　处：《电子测量技术》2019年第18期106-111,共6页Electronic Measurement Technology

基　　金：国家自然科学基金(61671248,41605121);江苏省重点研发计划(BE2018719);江苏省“信息与通信工程”优势学科计划资助

摘　　要：全面系统地分析了双指数函数、Heidler函数、脉冲函数、斜角波函数和半余弦函数5种常见的雷电流模型,指出了各个函数模型之间的关系、各自的优缺点和各个模型的适用范围。选用首次雷击10/350μs波形为标准雷电波,利用傅里叶变换和帕斯瓦尔定理对雷电流波形的频谱、能量和各个雷电流模型的陡度进行了研究,得出90%以上雷电流能量集中在20kHz以内,给出各模型的参数,并进行了对比分析,研究结果可为雷电防护和电子设备的冲击试验提供技术参考。This paper comprehensively and systematically analyzes five common lightning current models of double exponential function, Heidler function, pulse function, oblique wave function and semi-cosine function, and points out the relationship between each function model, their respective advantages and disadvantages and the scope of application. The first lightning 10/350 μs waveform is selected as the standard lightning wave. The spectrum of the lightning current waveform, the energy and the steepness of each lightning current model are studied by Fourier transform and Parseval theorem. It is concluded that more than 90% of the lightning current energy is concentrated within 20 kHz. The parameters of each model are given. A comparative analysis and research results provide technical references for lightning protection and impact testing of electronic equipment.

关 键 词：雷电流模型 标准雷电波 帕斯瓦尔定理 陡度 

分 类 号：TN781[电子电信—电路与系统]