Early warning method and system for power grid transmission tower damage fault caused by rainstorm

The invention relates to the technical field of power grid meteorological disaster prevention and reduction, in particular to a power grid transmission tower damage fault early warning method and system caused by rainstorm, and the method comprises the steps: firstly carrying out the processing according to a precipitation sequence and a factor sequence through employing a grey relational degree method, and obtaining the precipitation impact factors of a plurality of rainstorm events; inputting the data into a precipitation forecasting model for forecasting to obtain a precipitation grid forecasting result; secondly, adopting a bilinear interpolation method to interpolate the precipitation grid forecast result to the position corresponding to the longitude and latitude of the power transmission tower in the precipitation area, and obtaining the precipitation forecast value of each power transmission tower point location; then calculating the damage probability of each transmission tower according to the preci