Method and system for correcting lightning stroke distance formula of rotating fan

The invention relates to a fan lightning protection technology, in particular to a rotating fan lightning stroke distance formula correction method and system, the method comprises the following steps: calculating lightning stroke distances under different lightning current amplitudes based on a leading development method, fitting the lightning stroke distances to obtain a relation formula of lightning current and the lightning stroke distances, and then calculating the lightning stroke distance of the rotating fan based on a long-gap discharge test result of the rotating fan. By fitting test results of long-gap discharge voltage of the wind turbine under different gap distances and different working conditions, a correction coefficient of blade rotation to the strike distance of the wind turbine is proposed, and the lightning current amplitude and the blade tip linear velocity are introduced as variables to evaluate the influence of the blade rotation to the lightning strike distance. The method can reflect