Power fault accurate positioning method and system based on comprehensive distance measurement algorithm

The invention discloses a power fault accurate positioning method and system based on a comprehensive distance measurement algorithm, and relates to the technical field of power system fault determination analysis, and the method comprises the steps: building an electromagnetic-circuit framework model based on a field theory and an electromagnetic theory; based on an electromagnetic-circuit framework model, constructing a comprehensive distance measurement model combining traveling wave distance measurement and wave recording distance measurement, and constructing a target function of the comprehensive distance measurement model based on the first influence factor; the first influence factors comprise a line parameter, a topological structure, a distribution parameter and a fractionation branch; solving a target function of the comprehensive distance measurement model through an optimization algorithm, and obtaining a preliminary fault point coordinate estimation value; and correcting the initial coordinate e