基于冶炼设备故障的炼钢-连铸重调度  

Steelmaking-continuous casting rescheduling based on smelting equipment failure

作　　者：周涛 邵鑫 高山 李少帅 刘青 ZHOU Tao;SHAO Xin;GAO Shan;LI Shaoshuai;LIU Qing(State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China;Yinshan Section Steel Co.,Ltd.,Laiwu Iron and Steel Group,Laiwu 271104,China)

机构地区：[1]北京科技大学钢铁冶金新技术国家重点实验室,北京100083 [2]莱芜钢铁集团银山型钢有限公司,山东莱芜271104

出　　处：《冶金自动化》2023年第6期45-56,共12页Metallurgical Industry Automation

基　　金：中央高校基本科研业务费资助项目(FRF-BR-17-029A);钢铁冶金新技术国家重点实验室自主课题(41620007)。

摘　　要：针对炼钢-连铸生产过程中某一冶炼设备发生故障之后的重调度问题,为保证生产的稳定性,减少重调度方案相对于初始调度方案的变化程度,以开始作业时间、作业周期和设备指派的加权差异度最小化为目标,采用数学规划方法建立了重调度模型。通过分析炼钢厂生产运行模式和生产工艺过程,提出了由基于“炉-机对应”调度策略的设备指派算法和基于工序柔性缓冲调控策略的时间调整算法两部分组成的重调度算法。以国内某中大型炼钢厂炼钢-连铸实际生产中经常发生的转炉设备故障或精炼炉设备故障问题为仿真案例进行研究,结果表明,调度前/后开始作业时间、作业周期与设备指派的总加权差异度分别为0.29、1.43和1.21,可有效保持重调度方案与初始调度方案的一致性,保证生产的稳定性,且求解时间均小于0.6 s,能够针对冶炼设备发生故障后的重调度问题快速给出较优的解决方案,在冶炼设备故障频发的实际生产过程中能够保证炼钢-连铸有序、稳定、高效运行。Aiming at the rescheduling problem after the failure of a smelting equipment in the steel-making-continuous casting production process,in order to ensure the stability of production and re-duce the variation of the rescheduling scheme compared with the initial scheduling scheme,a re-scheduling model was proposed with the objective of minimizing the weighted variance of the start time,operation cycle and equipment assignment,which was established by mathematical planning method.By analyzing the production operation mode and production process of a steel plant,a re-scheduling algorithm was proposed,which consists of an equipment assignment algorithm based on the"furnace-caster coordinating"scheduling strategy rule and a time adjustment algorithm based on the process flexible buffer control strategy rule.Taking the converter equipment failures or refining furnace equipment failures that often occur during the actual production of steelmaking and continuous casting in a large domestic steel plant as simulation samples,the experimental results indicate that the total weighted differences between the start time,operation cycle and equipment assignment before and after scheduling were 0.29,1.43,and 1.21,respectively,which can effectively maintain the consistency between the rescheduling plan and the initial scheduling scheme,and ensure the stability of production.And the solution time was less than 0.6 s,which can quickly provide better solutions to the rescheduling problem after smelting equipment failures.In the actual production process with fre-quent failures of smelting equipment,the orderly,stable,and efficient operation of steelmaking-contin-uous casting can be ensured.

关 键 词：炼钢-连铸 重调度 冶炼设备故障 炉-机对应模式 启发式算法 柔性缓冲 

分 类 号：TF777[冶金工程—钢铁冶金]