炼钢‒连铸生产调度的研究进展

Progress of research on steelmaking‒continuous casting production scheduling

  • 摘要: 针对炼钢‒连铸过程的生产调度问题,首先,对生产调度问题的研究方法进行了总结和评述,梳理了各类方法的特点及适用范围;其次,介绍了当前国内外钢厂典型计算机辅助调度系统的一些案例,并讨论分析其特点;最后,在以往研究的基础上,对未来炼钢‒连铸过程生产调度问题的研究思路和方法提出了建议,针对静态调度提出了“规则+算法”的研究思路,以国内某特钢厂为例,提出了基于钢厂生产模式优化的调度模型构建方法;针对动态调度提出“多工序协同”的研究思路,提出了基于多智能体的炼钢‒连铸过程多工序工艺、质量与调度的协同控制的研究方法。优化高效的建模及求解方法是解决生产调度问题的重要手段之一,旨在改善当前钢厂生产计划编制水平、提高生产计划的可执行性、加强现场实时调控,对实现炼钢‒连铸过程稳定化、有序化、连续化运行具有重要意义。

     

    Abstract: Production scheduling is one of the key technologies in steel manufacturing process. It plays a significant role in reducing the production cost and improving the production efficiency of iron and steel enterprises. In recent years, with the rapid development of intelligent steel-manufacturing technology, production scheduling has attracted increasing attention and become a research hotspot in the field of iron and steel metallurgy. The process of production scheduling in the process of steelmaking‒continuous casting was summarized and discussed through reviews of previous researches, and the characteristics and application scopes of various methods were compared and classified. Typical cases of the computer-aided scheduling system in domestic and overseas steelmaking plants were discussed, and the characteristics of each system were studied and analyzed comparatively. On the basis of the previous studies, forward-looking strategies and a methodology of production scheduling were proposed for the future study of steelmaking‒continuous casting process. For static scheduling, a new concept “rules + algorithm” was proposed, and a scheduling model construction method based on the production mode optimization of a steel mill was developed for a domestic special-steelmaking plant as a case study. For dynamic scheduling, multi-process collaboration was suggested, and a collaborative control method based on multi-agent was proposed. This method was developed for multi-process control, quality control, and scheduling control of the steelmaking-continuous casting process. An optimized and effective method for modeling and solving is one of the important means to solve the production-scheduling problem, aiming at improving the levels of setting up production plan and the feasibility of production planning. Meanwhile proposed method for modeling and solving can strengthen the on-site real-time control in steel mills and is of great significance to realize stable, orderly, and continuous operation in steelmaking-continuous casting process.

     

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