Regional induction lightning damage risk assessment method and system for 10kV power distribution network

The invention discloses a regional induction lightning damage risk assessment method and system for a 10kV power distribution network. The method comprises the following steps: collecting lightning ground lightning activity information, ground surface object distribution information and 10kV overhead line parameter information of a target area, and dividing the target area into n grids; according to the lightning-to-ground lightning activity information, determining lightning-to-ground lightning density and current amplitude probability distribution of the ith grid; determining an inductive thunder flashover rate index Ri of the ith grid according to thunder and ground lightning density and the current amplitude probability distribution; calculating the inductive thunder flashover rate indexes of the first-class region area and the second-class region area of the n grids of the target region, and obtaining an inductive thunder flashover rate grid set of the target region; performing normalization processing o