直击雷引起的建筑物内部磁场仿真研究

Simulation Study of the Magnetic Field Inside the Building Caused by Direct Lightning Stroke

直击雷引起的建筑物内部电磁干扰问题一直是雷电防护方面的研究重点。采用基于矩量法(Mo M)开发的三维电磁场仿真软件FEKO,在CADFEKO模块中对某建筑物进行雷击电磁仿真,用场理论对模型进行扫频求解,并将得到的频域结果在POSTFEKO模块中进行傅里叶逆变换(IFFT)得到时域结果,然后对计算结果进行分析和讨论。结果表明,基于FEKO的电磁场仿真对建筑物内部雷电防护工程具有重要的参考价值。

The research of EMI problems inside the buildings caused by direct lightning stroke is important in lightning protection. FEKO which is a three-dimensional electromagnetic simulation software and based on the method of moments is used. The lightning electromagnetic simulation of the building is set up in CADFEKO. Then, the model is solved through electromagnetic theory and the frequency-domain results is transformed into the time-domain results through IFFT in POSTFEKO. Finally, the results are analyzed and discussed. The conclusion shows that, electromagnetic simulation based on FEKO has important reference value to the lightning protection engineering inside the buildings.