Bilayer planning method for intelligent scheduling for steelmaking-continuous welding production

Abstract

The invention provides a bilayer planning method for intelligent scheduling for steelmaking-continuous welding production. The method comprises the following specific steps: describing a problem of solving a production lot plan and a production time plan as a system optimizing problem with a bilayer hierarchical structure by combining with the hierarchy characteristics of steelmaking-continuous welding production scheduling; simultaneously researching two classes of plans in the same model; and carrying out global consideration on two classes of plans while an optimization target is set and an optimization variable is selected. In the built bilayer planning model for the intelligent scheduling for steelmaking-continuous welding production, an upper-layer scheduling is a problem of combining, sorting and distributing cast; and low-layer scheduling is a problem of searching optimized production time on the premise of known cast plan. By utilizing the bilayer planning method, the defect existing in the traditional compilation mode of the steelmaking-continuous welding production plan can be avoided, and the plan enforceability as well as the authenticity and the practicality of a plan optimization result can be improved. A sulphur removal station and an LF (Ladle furance) furnace serve as a buffer link in the whole-factory production scheduling, and the flexibility of the plan is enhanced.

Description

technical field [0001] The invention belongs to the field of information technology, relates to mathematical programming and intelligent optimization algorithms, in particular to a two-level planning method for intelligent scheduling of steelmaking-continuous casting production. Background technique [0002] The steelmaking-continuous casting production process is the core link in the production process of modern iron and steel complexes. In this production process, the molten iron from the blast furnace is first smelted into high-temperature molten steel by converter or electric furnace, and then refined by a refining furnace to meet the requirements of molten steel. The chemical composition and temperature requirements are finally sent to the continuous casting machine to be cast into slabs or billets of different specifications. The improvement of production efficiency in the steelmaking-continuous casting production process has an important impact on the entire iron and ...

AI Technical Summary

Problems solved by technology

[0009] (2) When obtaining the production plan, there is a lack of overall consideration in the setting of optimization goals and selection of optimization variables;

[0010] (3) Obtaining one of the two types of plans, the production batch plan and the production time plan, is not enough to implement the specific production process and must be used in combination with other planning results

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