考虑电弧炉出钢延迟废钢铁再制造重调度研究

Research on Rescheduling Model and Algorithm in the Iron and Steel Scrap Remanufacturing Taking the EAF's Steel Delay into Considerations

针对废钢铁再制造中电弧炉出钢延迟的生产扰动问题,以断浇最小化、重调度前后加权差异最小化为目标,建立冲突消除规则和断浇修复规则,在工艺动态约束满足下设计了右移受影响炉次和炉次重分配两类重调度方案。仿真实验验证了算法的有效性,并得出:延迟时间越长,断浇可能性越大,重调度前后差异也越明显,并更倾向于选择炉次重分配;生产环境需求决定着权重系数大小设置;冶炼、精炼工序双炉次重分配在极端条件下可成为最优方案。

For the problem of steel delay with the electric arc furnace in the iron and steel scrap remanufacturing process, to minimized the total broken time and the weighted difference before and after rescheduling, conflict resolution and broken repair rules are established. Moreover,also design the Right- shift Affected Charges and the Redistribution of Charges with dynamic constraint satisfaction. Simulation results show the effectiveness of the algorithm, and obtain that： the longer the delay, the bigger possibility of casting broken, also the more obvious difference before and after rescheduling, and more likely to choose the Redistribution of Charges; Production demand of environment determines the weight coefficient size settings; Double Redistribution of Charges in Smelting and Refining Process may be the optimal solution in extreme conditions.