OVERVOLTAGES AND IMPULSE ELECTROMAGNETIC FIELDS IN BROADCASTING STATIONS DURING DIRECT LIGHTNING STROKE

摘要

This paper presents the numerical simulations of direct lightning strike to the tower of large broadcasting station. Lightning currents flowing through the conducted parts of the tower and building generates impulse electromagnetic fields inside this building as well as surge currents and voltages in the external and internal cabling. In calculations the different ways of grounding and equipotential bonding of the antenna cables' shields have been taken into account.