TRANSIENT INDUCED VOLTAGE COMPUTATION IN A HIGH BUILDING STRUCK BY LIGHTNING

The effects resulting from direct lightning strikes to buildings may a ffect the reliable operation of electric and electronic systems instal led inside. The influence of such phenomena on equipment and systems d epends on the immunity levels, and on the magnetic field intensity due to the lightning current. In this paper, a time-domain simulation of the lightning induced voltage on electric circuits (open metal loops) located inside a high building, a steel structure, is presented. In or der to make an extensive analysis, the simulation is carried out consi dering different regions within the building, The results related to m agnetic flux density and induced effects, helpful in determining the c ritical positions of equipment, are presented, and some of them are co mpared with those obtained from other methodologies proposed in the li terature.