In order to solve the deviation between the actual discharge and the calculated discharge of hydropower plant by mixed integer linear programming (MILP) model with design head

an optimal head selection method for MILP model of hydropower plant based on operation data is proposed. Firstly

the MILP model of hydropower plant is used to obtain the optimal head which has the minimum deviation between the actual discharge and the calculated discharge. Then

the daily average reservoir inflow and the daily average output are taken as the optimal head eigenvectors. In the actual scheduling process

the optimal head can be selected according to the predicted reservoir inflow and the daily planned energy. The example shows that the proposed method can better reflect the actual discharge of hydropower plant

and is conducive to improving the matching accuracy of upstream and downstream water volume of cascaded hydropower plants in the formulation of power grid dispatching plan.