Research on Step Size Distribution in Lightning Path Simulation

Lightning path simulation is of great significance for lightning protection design and lightning warning of transmission lines or buildings. Lightning step size is one of the most important parameters in lightning path simulation research. The research of this paper has important theoretical significance. In this paper, the lightning video shot by a high-speed camera is divided into frames, and the lightening and shading changes of each frame are observed to obtain the statistical distribution rule of step size. On the basis of statistical analysis, the lightning step size is further studied theoretically. Firstly, the lightning strike path is divided into several segments, and the corresponding relationship between the step change of each segment and the number of boxes is obtained based on the box dimension method, so as to determine the step size of each segment, and obtain the corresponding theoretical distribution law of step size. On this basis, the statistical distribution law of the step size is used to modify it. The research of this paper lays a foundation for the simulation of lightning strike path.