Rolling energy-saving method based on optimal matching of slabs and contracts

The invention discloses a rolling energy-saving method based on optimal matching of slabs and contracts. The method includes the steps of reading slab and contract data from a manufacture execution system, carrying out grouping processing, obtaining a set of contract matching alternative scheme lists of the slabs based on variable neighbor regions and a local searching algorithm of a backtracking strategy, predicting slab rolling energy consumption based on rolling schedule setting calculation and BP neural network calculation, searching the minimum rolling energy consumption contract matching scheme of the slabs according to comprehensive evaluation of design yields and rolling energy consumption prediction values, sending the minimum rolling energy consumption contract matching scheme of the slabs and corresponding rolling schedules to the manufacture execution system, and carrying out rolling production according to the minimum rolling energy consumption contract matching scheme of the slabs and the corresponding rolling schedules. The method is suitable for production management optimization of a medium-thick slab steel enterprise, production is carried out based on the slab and contract matching relationship determined in the method, energy consumption of the slab rolling process can be reduced, the yield rate of steel product machining is improved, and meanwhile, automatic cutting efficiency of steel plates is guaranteed.