Power distribution network important load voltage model prediction control method

A power distribution network important load voltage model prediction control method is characterized by comprising the steps of performing fast state estimation on a power grid based on a weighted least square method, obtaining a power grid state and extracting voltage control sensitivity on line; a linearized power grid voltage prediction model is established based on voltage control sensitivity, the power grid voltage at multiple moments in the future is predicted in combination with new energy prediction information, and a rolling optimization model is established with the control deviation of important load voltage and reference voltage and the minimum equipment adjustment cost as targets. The power grid voltage state is obtained in real time through state estimation, the precision requirement of voltage control is effectively guaranteed, and closed-loop feedback of voltage control is achieved; voltage sensitivity is extracted to serve as a basis for multi-control main body coordination control, so that c