| A novel two-stage Lagrangian decomposition approach for refinery production scheduling with operational transitions in mode switching☆ |
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| 作者姓名： | Lei Shi Yongheng Jiang Ling Wang Dexian Huang |
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| 作者单位： | 1.Institute of Process Control Engineering, Department of Automation, Tsinghua University, Beijing 100084, China;2.Tsinghua National Laboratory for Information Science and Technology, Tsinghua University, Beijing 100084, China |
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| 基金项目： | Supported by the National Natural Science Foundation of China (61273039, 21276137) and the National Science Fund for Distinguished Young Scholars of China (61525304). |
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| 摘 要： | 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 hori-zons and different numbers of orders show that the proposed Lagrangian scheme is effective and efficient.
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| 关 键 词： | Refinery scheduling Operational transitions Lagrangian decomposition |
| 收稿时间： | 2014-12-17 |
A novel two-stage Lagrangian decomposition approach for refinery production scheduling with operational transitions in mode switching |
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| Lei Shi,Yongheng Jiang,Ling Wang,Dexian Huang.A novel two-stage Lagrangian decomposition approach for refinery production scheduling with operational transitions in mode switching[J].Chinese Journal of Chemical Engineering,2015,23(11):1793-1800. |
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| Authors: | Lei Shi Yongheng Jiang Ling Wang Dexian Huang |
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| Affiliation: | 1.Institute of Process Control Engineering, Department of Automation, Tsinghua University, Beijing 100084, China;2.Tsinghua National Laboratory for Information Science and Technology, Tsinghua University, Beijing 100084, China |
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| Abstract: | 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 hori-zons and different numbers of orders show that the proposed Lagrangian scheme is effective and efficient. |
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| Keywords: | Refinery scheduling Operational transitions Lagrangian decomposition |
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