Efficient decomposition-based algorithm to solve long-term pipeline scheduling problem

Abstract This paper addresses the scheduling and inventory management of a straight pipeline system connecting a single refinery to multiple distribution centers. By increasing the number of batches and time periods, maintaining the model resolution by using linear programming-based methods and comm...

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Autores principales: S. Moradi, S. A. MirHassani, F. Hooshmand
Formato: article
Lenguaje:EN
Publicado: KeAi Communications Co., Ltd. 2019
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Acceso en línea:https://doaj.org/article/951e8f69de714c2f8e2b97da5ac5c008
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Sumario:Abstract This paper addresses the scheduling and inventory management of a straight pipeline system connecting a single refinery to multiple distribution centers. By increasing the number of batches and time periods, maintaining the model resolution by using linear programming-based methods and commercial solvers would be very time-consuming. In this paper, we make an attempt to utilize the problem structure and develop a decomposition-based algorithm capable of finding near-optimal solutions for large instances in a reasonable time. The algorithm starts with a relaxed version of the model and adds a family of cuts on the fly, so that a near-optimal solution is obtained within a few iterations. The idea behind the cut generation is based on the knowledge of the underlying problem structure. Computational experiments on a real-world data case and some randomly generated instances confirm the efficiency of the proposed algorithm in terms of the solution quality and time.