A method for calculating atmospheric overvoltages on a power line

摘要

The calculation procedure uses the method of determining the lightning-induced current when the lightning directly hits a horizontal wire. When a lightning hits a wire of a multi-wire power line, charges are induced in the neighbouring phases and in the ground wires, which affect the potential of the wire exposed to the lightning discharge and the ionization processes around this wire. The procedure proposed enables the parameters of the voltage surge applied to the power insulation at the location where the wire of a multi-wire system is hit by the lightning stroke, and at any distance from it.