回击电流对雷电远区电磁场多重分形特征的影响
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- 英文论文题名：Influence of Return Stroke Current on Multifractal Characteristics of Lightning Electromagnetic Field in Far-Zone
- 论文作者：万浩江 ; 陈亚洲 ; 王晓嘉
- 英文论文作者：WAN Haojiang ; CHEN Yazhou ; WANG Xiaojia ; National Key Laboratory on Electromagnetic Environment Effects ; Mechanical Engineering College
- 年：2015
- 作者机构：军械工程学院电磁环境效应国家级重点实验室;
- 论文关键词：雷电电磁场 ; 回击电流 ; 多重分形 ; 上升时间 ; 半峰值时间
- 英文论文关键词：lightning electromagnetic field ; return stroke current ; multifractal ; rise time ; half-value time
- 会议召开时间：2015-08-12
- 会议录名称：静电放电：从地面新技术应用到空间卫星安全防护—中国物理学会第二十届全国静电学术会议论文集
- 语种：中文
- 分类号：O441
- 学会代码：WLJD
- 会议名称：静电放电 ; 从地面新技术应用到空间卫星安全防护—中国物理学会第二十届全国静电学术会议
- 会议地点：中国河北石家庄
- 主办单位：中国物理学会静电专业委员会
- 学会名称：中国物理学会静电专业委员会
- 页数：7
- 文件大小：986k
- 原文格式：D
- 会议级别：全国
摘要
针对弯曲通道下回击电流对雷电电磁场波形特征的影响和表征问题,基于偶极子法建立了云地闪随机弯曲通道回击电磁场的计算模型,对不同回击电流波形激发的远区电磁场进行了计算和多重分形分析,获得了观测点方位角和回击电流波形特征对远区电磁场多重分形特征的影响规律。结果表明:雷电远区电磁场的多重分形谱宽度Δa和不对称度B受方位角和回击电流波形的影响要比峰值奇异指数a_0明显;回击电流波形的上升时间越大,远区电磁场波形越平滑,对应多重分形谱的峰值奇异指数a_0和谱宽度Δa越小,不对称度B越大;回击电流波形的半峰值时间越大,远区电磁场多重分形谱的峰值奇异指数a0和谱宽度Δa越小,而不对称度B则呈现先减小后增大的趋势。
In order to evaluate the influence of return stroke current on lightning electromagnetic field associated with tortuous lightning channel,a model of lightning electromagnetic field for a tortuous lightning channel is proposed based on the dipole method.Lightning electromagnetic fields in far-zone generated by different channel currents are calculated.Then the influence of azimuth angle,rise time and half-value time of return stroke current on the multifractal characteristics of lightning electromagnetic field are obtained by using multifractal analysis.The results show that the width Δa and asymmetry factor B of multifractal spectrum for lightning electromagnetic field in far-zone are more susceptible to the azimuth angle and return stroke current waveform than the exponent a_0.The bigger of the rise time of return stroke current,the more smooth-looking of lightning electromagnetic field waveform in far-zone.Correspondingly,the exponent a_0 and width Δa of multifractal spectrum decreases with the increasing of rise time,and the asymmetry factor B increases with the increasing of rise time.The bigger of the half-value time of return stroke current,the smaller of the exponent a_0 and width Δa of multifractal spectrum for lightning electromagnetic field in far-zone.Moreover,the asymmetry factor B decreases subsequently increases with the increasing of the half-value time.
In order to evaluate the influence of return stroke current on lightning electromagnetic field associated with tortuous lightning channel,a model of lightning electromagnetic field for a tortuous lightning channel is proposed based on the dipole method.Lightning electromagnetic fields in far-zone generated by different channel currents are calculated.Then the influence of azimuth angle,rise time and half-value time of return stroke current on the multifractal characteristics of lightning electromagnetic field are obtained by using multifractal analysis.The results show that the width Δa and asymmetry factor B of multifractal spectrum for lightning electromagnetic field in far-zone are more susceptible to the azimuth angle and return stroke current waveform than the exponent a_0.The bigger of the rise time of return stroke current,the more smooth-looking of lightning electromagnetic field waveform in far-zone.Correspondingly,the exponent a_0 and width Δa of multifractal spectrum decreases with the increasing of rise time,and the asymmetry factor B increases with the increasing of rise time.The bigger of the half-value time of return stroke current,the smaller of the exponent a_0 and width Δa of multifractal spectrum for lightning electromagnetic field in far-zone.Moreover,the asymmetry factor B decreases subsequently increases with the increasing of the half-value time.
引文
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[8]陈伟根,夏青,罗兵,等.用于绝缘子污秽度预测的泄漏电流分形特征[J].高电压技术,2011,37(5):1136-1141.CHEN Wei-gen,XIA Qing,LUO Bing,et al.Fractal characteristic of leakage current for insulators contamination degree prediction[J].High Voltage Engineering,2011,37(5):1136-1141.
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[11]Yazhou Chen,Haojiang Wan,Xiaojia Wang.On the relationship between the lightning electromagnetic field and the channel-base current based on the TL model[J].Journal of Electrostatics,2013,71(6):1020-1028.
[12]Vecchi G,Labate D,Canavero F.Fractal approach to lightning radiation on a tortuous channel[J].Radio Sci.,1994,29(4):691-704.
[13]LupòG,Petrarca C,Tucci V,et al.EM fields associated with lightning channels:On the effect of tortuosity and branching[J].IEEE Transactions on Electromagnetic Compatibility,2000,42(4):394-404.
[14]苟学强,张义军,董万胜,等.基于小波的地闪首次回击辐射场的多重分形分析[J].地球物理学报,2007,50(1):101-105.GOU Xue-qiang,ZHANG Yi-jun,DONG Wan-sheng,et al.Wavelet-based multifractal analysis of the radiation field of first return stroke in cloud-to-ground discharge[J].Chinese J.Geophys.(in Chinese),2007,50(1):10l-105.
[15]祁树锋,李夕海,韩绍卿,等.基于多重分形分析的核爆与雷电电磁脉冲识别[J].振动与冲击,2013,32(7):8-10,16.QI Shu-feng,LI Xi-hai,HAN Shao-qing,et al.Discrimination of nuclear explosion and lightning electromagnetic pulses using multi-fractal analysis[J].Journal of Vibration and Shock,2013,32(7):8-10,16.
[16]Richman C I.Fractal geometry of lightning strokes[C]//IEEE Military Communications Conference.Monterey:IEEE Press,1990:1085-1090.
[17]Rakov V A,Dulzon A A.Calculated electromagnetic fields of lightning return stroke[J].Tekh.Elektrodinam.,1:87-89,1987.
[18]Zhang Feizhou,Liu Shanghe.A new function to represent the lightning return-stroke currents[J].IEEE Transactions on Electromagnetic Compatibility,2002,44(4):595-597.
[19]Shimizu Y,Thurner S,Ehrenberger K.Multifractal spectra as a measure of complexity in human posture[J].Fractals,2002,10:103-116.
[20]Telesca L,Balasco M,Colangelo G,et al.Investigating the multifractal properties of geoelectrical signals measured in southern Italy[J].Physics and Chemistry of the Earth,2004,29:295-303.
[21]孙永奎,余志斌,金炜东,等.高速列车监测数据的奇异性特征研究[J].电子科技大学学报,2014,43(3):388-392.SUN Yong-kui,YU Zhi-bin,JIN Wei-dong,et al.On the singularity characteristics of high-speed trains[J].Journal of University of Electronic Science and Technology of China,2014,43(3):388-392.
[22]苟学强,张义军,董万胜.基于小波的雷暴强放电前地面电场的多重分形分析[J].物理学报,2006,55(2):957-961.Gou Xue-qiang,Zhang Yi-jun,Dong Wan-sheng.Wavelet-based multifractal analysis of ground electric field before occurrence of strong discharge in thunderstorm[J].Acta Physica Sinica(in Chinese),2006,55(2):957-961.
[23]Rakov V A,Uman M A.Lightning:Physics and effects[M].Cambridge:Cambridge University Press,2003.
[2]Kawasaki Z,Matsuura K.Does a lightning channel show a fractal?[J].Applied Energy,2000,67(1):147-158.
[3]Tren’kin A A.Fractal spatial structure of lightning discharge and its relation to the structures of high-voltage discharges of other types[J].Technical Physics Letters,2010,36(4):299-301.
[4]万浩江,魏光辉,陈强,等.雷电先导放电的三维数值模拟与应用[J].高电压技术,2013,39(2):430-436.WAN Haojiang,WEI Guanghui,CHEN Qiang,et al.Three-dimensional numerical simulation of lightning discharge and its application[J].High Voltage Engineering,2013,39(2):430-436.
[5]Lopes R,Betrouni N.Fractal and multifractal analysis:Areview[J].Medical Image Analysis,2009,13:634-649.
[6]Figueirêdo P H,Nogueira Jr E,Moret M A,et al.Multifractal analysis of polyalanines time series[J].Physica A,2010,389:2090-2095.
[7]唐炬,曾福平,范庆涛,等.基于荧光光纤检测GIS局部放电的多重分形谱识别[J].高电压技术,2014,40(2):465-473.TANG Ju,ZENG Fuping,FAN Qingtao,et al.Multifractal spectrum identification of partial discharge in GIS based on fluorescence optical fiber detection[J].High Voltage Engineering,2014,40(2):465-473.
[8]陈伟根,夏青,罗兵,等.用于绝缘子污秽度预测的泄漏电流分形特征[J].高电压技术,2011,37(5):1136-1141.CHEN Wei-gen,XIA Qing,LUO Bing,et al.Fractal characteristic of leakage current for insulators contamination degree prediction[J].High Voltage Engineering,2011,37(5):1136-1141.
[9]LupòG,Petrarca C,Tucci V,et al.EM fields generated by lightning channels with arbitrary location and slope[J].IEEE Transactions on Electromagnetic Compatibility,2000,42(1):39-53.
[10]陈亚洲,刘尚合,魏明,等.回击参数对闪电电磁场的影响[J].高电压技术,2002,28(10):28-29,34.CHEN Yazhou,LIU Shanghe,WEI Ming,et al.The effect of parameters of lightning return stroke on electromagnetic field[J].High Voltage Engineering,2002,28(10):28-29,34.
[11]Yazhou Chen,Haojiang Wan,Xiaojia Wang.On the relationship between the lightning electromagnetic field and the channel-base current based on the TL model[J].Journal of Electrostatics,2013,71(6):1020-1028.
[12]Vecchi G,Labate D,Canavero F.Fractal approach to lightning radiation on a tortuous channel[J].Radio Sci.,1994,29(4):691-704.
[13]LupòG,Petrarca C,Tucci V,et al.EM fields associated with lightning channels:On the effect of tortuosity and branching[J].IEEE Transactions on Electromagnetic Compatibility,2000,42(4):394-404.
[14]苟学强,张义军,董万胜,等.基于小波的地闪首次回击辐射场的多重分形分析[J].地球物理学报,2007,50(1):101-105.GOU Xue-qiang,ZHANG Yi-jun,DONG Wan-sheng,et al.Wavelet-based multifractal analysis of the radiation field of first return stroke in cloud-to-ground discharge[J].Chinese J.Geophys.(in Chinese),2007,50(1):10l-105.
[15]祁树锋,李夕海,韩绍卿,等.基于多重分形分析的核爆与雷电电磁脉冲识别[J].振动与冲击,2013,32(7):8-10,16.QI Shu-feng,LI Xi-hai,HAN Shao-qing,et al.Discrimination of nuclear explosion and lightning electromagnetic pulses using multi-fractal analysis[J].Journal of Vibration and Shock,2013,32(7):8-10,16.
[16]Richman C I.Fractal geometry of lightning strokes[C]//IEEE Military Communications Conference.Monterey:IEEE Press,1990:1085-1090.
[17]Rakov V A,Dulzon A A.Calculated electromagnetic fields of lightning return stroke[J].Tekh.Elektrodinam.,1:87-89,1987.
[18]Zhang Feizhou,Liu Shanghe.A new function to represent the lightning return-stroke currents[J].IEEE Transactions on Electromagnetic Compatibility,2002,44(4):595-597.
[19]Shimizu Y,Thurner S,Ehrenberger K.Multifractal spectra as a measure of complexity in human posture[J].Fractals,2002,10:103-116.
[20]Telesca L,Balasco M,Colangelo G,et al.Investigating the multifractal properties of geoelectrical signals measured in southern Italy[J].Physics and Chemistry of the Earth,2004,29:295-303.
[21]孙永奎,余志斌,金炜东,等.高速列车监测数据的奇异性特征研究[J].电子科技大学学报,2014,43(3):388-392.SUN Yong-kui,YU Zhi-bin,JIN Wei-dong,et al.On the singularity characteristics of high-speed trains[J].Journal of University of Electronic Science and Technology of China,2014,43(3):388-392.
[22]苟学强,张义军,董万胜.基于小波的雷暴强放电前地面电场的多重分形分析[J].物理学报,2006,55(2):957-961.Gou Xue-qiang,Zhang Yi-jun,Dong Wan-sheng.Wavelet-based multifractal analysis of ground electric field before occurrence of strong discharge in thunderstorm[J].Acta Physica Sinica(in Chinese),2006,55(2):957-961.
[23]Rakov V A,Uman M A.Lightning:Physics and effects[M].Cambridge:Cambridge University Press,2003.