An engineering method for determining the lightning resistance of high-voltage transmission lines allowing for the impulse characteristics of the grounding electrodes

摘要

A mathematical model for analysing the impulse characteristics of a complex grounding electrode in uniform or two-layer ground is presented. The model is based on an equivalent circuit with constant parameters, described by a system ofdifferential equations. It enables the impulse characteristics of the grounding electrode in uniform and two-layer ground to be calculated taking account of the interaction between the elements of the electrode.