A Strategy for the Integration of Production Planning and Scheduling in Refineries under Uncertainty

A strategy for the integration of production planning and scheduling in refineries is proposed. This strategy relies on rolling horizon strategy and a two-level decomposition strategy. This strategy involves an upper level multiperiod mixed integer linear programming （MILP） model and a lower level simulation system, which is extended from our previous framework for short-term scheduling problems [Luo, C.E, Rong, G, ＂Hierarchical apthis extended framework is to reduce the number of variables and the size of the optimization model and, to quickly find the optimal solution for the integrated planning/scheduling problem in refineries. Uncertainties are also considered in this article. An integrated robust optimization approach is introduced to cope with uncertain parameters with both continuous and discrete probability distribution.

为生产在精炼厂计划并且安排的集成的策略被建议。这策略依靠卷地平线策略和二水平的分解策略。这策略多包含上面的水平时期混合了整数线性编程(MILP ) 模型和一个低级模拟系统，为短期的安排问题从我们的以前的框架被扩大，罗， C.P， Rong， G. ， &#x201c；为在 refineries&#x201d 的短期的安排的层次途径；， Ind。Eng。Chem。物件， 46， 3656-3668 (2007 )] 。这个扩大框架的主要目的是减少变量的数字和优化模型的尺寸并且，快速在精炼厂为综合计划 / 安排问题发现最佳的溶液。不确定性也在这篇文章被考虑。一条综合柔韧的优化途径被介绍与连续、分离的概率分发应付不明确的参数。