Statistical study on response of overhead line to electromagnetic pulse
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摘要: 为考察电磁脉冲在系统端口产生的电磁应力，采用场线耦合模型，计算了电磁脉冲环境、架空线缆结构和大地等参数对线缆负载响应的影响。结果表明：入射角、方位角、极化角和入射脉冲峰值是影响负载响应电流的主要因素。由于入射脉冲峰值与负载响应电流呈严格的正比例关系，可不作为随机变量考虑。最后以电磁脉冲的入射角、方位角和极化角为随机变量，分别计算180种状态的线缆终端负载的响应电流峰值，电流峰值的统计结果符合正态分布。Abstract: The induced current excited by electromagnetic pulse (EMP) would threat electronic equipments connected by the line. The transmission line and electromagnetic scattering models for assessing the electromagnetic stress generated by EMP in system port are discussed, and the detailed study about the impact by the EMP environment, the construction of overhead line and the earth parameters is presented, and a statistical regularity of the line terminal response is given.
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Key words:
- electromagnetic pulse /
- overhead line /
- field-line coupling
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