کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
167957 | 1423394 | 2015 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A novel two-stage Lagrangian decomposition approach for refinery production scheduling with operational transitions in mode switching A novel two-stage Lagrangian decomposition approach for refinery production scheduling with operational transitions in mode switching](/preview/png/167957.png)
To address large scale industrial processes, a novel Lagrangian scheme is proposed to decompose a refinery scheduling problem with operational transitions in mode switching into a production subproblem and a blending and delivery subproblem. To accelerate the convergence of Lagrange multipliers, some auxiliary constraints are added in the blending and delivery subproblem. A speed-up scheme is presented to increase the efficiency for solving the production subproblem. An initialization scheme of Lagrange multipliers and a heuristic algorithm to find feasible solutions are designed. Computational results on three cases with different lengths of time horizons and different numbers of orders show that the proposed Lagrangian scheme is effective and efficient.
To address large scale industrial processes, a novel Lagrangian scheme is proposed to decompose a refinery scheduling problem into a production subproblem and a blending and delivery subproblem. To accelerate the convergence of Lagrange multipliers, some auxiliary constraints are added in the blending and delivery subproblem. A speed-up algorithm is presented to increase the efficiency for solving the production subproblem approximately. As the iteration goes on, the dual objective value will be close to the accurate one. An initialization scheme of Lagrange multipliers and a heuristic algorithm to find feasible solutions are also designed. Computational results on three cases with different lengths of time horizons and different numbers of orders show that the proposed Lagrangian scheme is effective and efficient.Figure optionsDownload as PowerPoint slide
Journal: Chinese Journal of Chemical Engineering - Volume 23, Issue 11, November 2015, Pages 1793–1800