Lightning Risk Assessment Algorithm for Overhead Transmission Lines Based on Combined Weighting-Cloud Model

With new power systems rapid development, lightning threats to power systems' safe operation are increasing. This paper presents a lightning risk assessment method for overhead transmission lines via a combined weighting-cloud model approach. It collects data on environmental and ontology characteristic factors, uses the combined analytic hierarchy process and entropy weight method to calculate factor weights, employs the cloud model's uncertainty to address data randomness, and develops a cloud model membership selector to derive assessment results. Experiments show this method accurately evaluates transmission line lightning risks, informing lightning protection strategies.