Systematic approach for the analysis of the electromagnetic environment inside a building during lightning strike

This paper defines a systematic approach considering the lightning current at the base of the channel as input function, the spatial distribution of t he electromagnetic (EM) field inside the building, or the overvoltages indu ced at the open ends of loops as output functions. A parametric analysis of the influence of the lightning protection system on the output functions i s carried out in frequency domain. The systematic approach allows one to ta ke into account the probabilistic nature of the input Function, which trans forms the values of the outputs from deterministic to a distribution of pro bability, This is extremely useful for all electromagnetic compatibility (E MC) engineers dealing with realistic systems' designs or maintenance proble ms.