Electric transmission line three-dimensional lightning calculating method based on electric transmission line structure and terrain

The invention relates to an electric transmission line three-dimensional lightning calculating method based on an electric transmission line structure and a terrain, which belongs to the field of electric transmission line lightning protection. The method comprises the following steps of: modeling a lightning process by using the current relatively mature parameters; comprehensively considering the influences of factors such as an electric transmission line structure, an electric transmission line running voltage, a terrain, thundercloud charge and the like on a thunder developing process; and simulating the development of downward leading and upward leading of lightning to obtain a lightning striking position. The lightning striking process calculated by using the method is more accordant with the practical lightning situation, so that the accuracy of lightning trip-out analysis in practical engineering is increased when the method is used for calculating the lightning trip-out rate of practical engineering; and the method disclosed can be used for calculating the lightning process of the electric transmission line on various terrains, and the calculation application range is wide.