Power grid automatic scheduling method and system

The invention discloses a power grid automatic scheduling method and system. The method comprises the steps: obtaining operation data of a current secondary power grid and first weather data of each secondary power grid in the future n time periods from a database; inputting the current secondary power grid operation data and the first weather data of each secondary power grid into a pre-constructed electrical load prediction model, and calculating first electrical load data of each secondary power grid in the future n time periods; and inputting the first electrical load data of each secondary power grid into a pre-built power grid scheduling model, obtaining a power grid control action instruction, and performing corresponding power grid scheduling control on a main power grid accordingto the power grid control action instruction. According to the invention, meteorological factors are used as data required to be input by an artificial neural network algorithm so that the influence of meteorological factor c