Coal-fired power plant inventory management system and method based on supply-demand relation

The invention discloses a coal-fired power plant inventory management method based on supply-demand relation, which comprises the following steps of: acquiring the current coal-fired storage amount and coal quality characteristics of a power plant, and acquiring coal quality information of to-be-purchased coal and coal quality characteristic representation vectors of the to-be-purchased coal; determining the fuel coal purchase quantity and the fuel coal consumption; determining a coal blending boundary condition and/or a coal inventory condition in the current fire coal planning time of the power plant; and establishing a fire coal purchasing objective function, and obtaining an optimal solution of the objective function according to the coal blending boundary information and/or purchasinginventory information of the power plant within the current fire coal planning time so as to obtain an inventory fire coal purchasing plan. The invention further discloses a coal-fired power plant inventory management system