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建筑物高度对地闪回击电磁场影响的模拟

宿志国 吕伟涛 陈绿文 马颖 武斌 齐奇 吴姗姗

宿志国, 吕伟涛, 陈绿文, 等. 建筑物高度对地闪回击电磁场影响的模拟. 应用气象学报, 2018, 29(4): 487-495. DOI: 10.11898/1001-7313.20180409..
引用本文: 宿志国, 吕伟涛, 陈绿文, 等. 建筑物高度对地闪回击电磁场影响的模拟. 应用气象学报, 2018, 29(4): 487-495. DOI: 10.11898/1001-7313.20180409.
Su Zhiguo, Lü Weitao, Chen Lüwen, et al. Simulation of structure height influences on electromagnetic field of lightning return stroke. J Appl Meteor Sci, 2018, 29(4): 487-495. DOI:  10.11898/1001-7313.20180409.
Citation: Su Zhiguo, Lü Weitao, Chen Lüwen, et al. Simulation of structure height influences on electromagnetic field of lightning return stroke. J Appl Meteor Sci, 2018, 29(4): 487-495. DOI:  10.11898/1001-7313.20180409.

建筑物高度对地闪回击电磁场影响的模拟

DOI: 10.11898/1001-7313.20180409
资助项目: 

国家自然科学基金项目 41475003

国家重点研究发展计划 2017YFC1501504

国家自然科学基金项目 51420105011

详细信息
    通信作者:

    吕伟涛, 邮箱:wtlyu@cma.gov.cn

Simulation of Structure Height Influences on Electromagnetic Field of Lightning Return Stroke

  • 摘要: 基于三维时域有限差分数值算法(3D-FDTD)建立了雷击高建筑物电磁场传播模型,研究了负地闪击中不同高度建筑物时回击垂直电场、角向磁场以及水平电场沿地表的传播规律。模拟结果表明:建筑物的高度对雷电电场峰值的影响显著,如当建筑物高度从100 m增加至600 m时,在距离d=100 m位置的垂直电场峰值减小了63%,水平电场正极性峰值的增加比例为84%、负极性峰值的绝对值增加比例高达130%;观测位置不变时,角向磁场峰值和水平电场正极性峰值均会随着建筑物高度的增加而增大;对于距离d=100 m,300 m时,垂直电场的峰值随着建筑物高度的增加而减小,而d=500 m时,垂直电场峰值随着建筑物高度的增加呈现出先增大后减小的趋势;此外,建筑物高度会影响垂直电场峰值对距离的敏感程度,建筑物越低(高),相应的垂直电场峰值随着观测距离增大衰减越快(慢)。该文研究结果能够为现代化城市中高建筑物附近线缆、室外设备等的雷电防护方案设计提供参考。
  • 图  1  模型示意图

    Fig. 1  Geometry model

    图  2  本文算法有效性检验

    Fig. 2  Validation of the method used in this paper

    图  3  垂直电场波形

    Fig. 3  Waveforms of vertical electric field

    图  4  角向磁场波形

    Fig. 4  Waveforms of azimuthal magnetic field

    图  5  水平电场波形

    Fig. 5  Waveforms of horizontal electric field

    表  1  垂直电场峰值(单位:kV·m-1)

    Table  1  Peak value of vertical electric field(unit:kV·m-1)

    距离 h=100 m h=300 m h=500 m h=600 m
    d=100 m 8.59 4.86 3.70 3.41
    d=300 m 3.26 2.83 2.20 1.99
    d=500 m 1.84 1.88 1.62 1.51
    下载: 导出CSV

    表  2  角向磁场峰值(单位:A·m-1)

    Table  2  Peak value of azimuthal magnetic field(unit:A·m-1)

    距离 h=100 m h=300 m h=500 m h=600 m
    d=100 m 27.01 28.12 28.29 28.37
    d=300 m 8.31 9.10 9.22 9.27
    d=500 m 4.68 5.21 5.37 5.40
    下载: 导出CSV

    表  3  水平电场正极性峰值(单位:kV·m-1)

    Table  3  Positive peak value of horizontal electric field(unit:kV·m-1)

    距离 h=100 m h=300 m h=500 m h=600 m
    d=100 m 0.70 1.08 1.25 1.29
    d=300 m 0.14 0.25 0.35 0.38
    d=500 m 0.07 0.13 0.16 0.18
    下载: 导出CSV

    表  4  水平电场负极性峰值(单位:kV·m-1)

    Table  4  Negative peak value of horizontal electric field(unit:kV·m-1)

    距离 h=100 m h=300 m h=500 m h=600 m
    d=100 m -1.27 -2.57 -2.87 -2.92
    d=300 m -0.29 -0.49 -0.71 -0.78
    d=500 m -0.17 -0.24 -0.30 -0.35
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-03-05
  • 修回日期:  2018-05-21
  • 刊出日期:  2018-07-31

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