Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/1313
Título: An heuristic approach for optimal location of gas supply units in transportation system
Autor: Nogueira, Teresa
Mendes, Rui
Vale, Zita
Cardoso, José
Palavras-chave: Facility location
Gas supply units – GSUs
Physical pipeline
Virtual pipeline
p-median problem
Lagrangean relaxation
Subgradient optimization
Data: 2007
Editora: Croatian Gas Centre and Croatian Gas Association
Resumo: The best places to locate the Gas Supply Units (GSUs) on a natural gas systems and their optimal allocation to loads are the key factors to organize an efficient upstream gas infrastructure. The number of GSUs and their optimal location in a gas network is a decision problem that can be formulated as a linear programming problem. Our emphasis is on the formulation and use of a suitable location model, reflecting real-world operations and constraints of a natural gas system. This paper presents a heuristic model, based on lagrangean approach, developed for finding the optimal GSUs location on a natural gas network, minimizing expenses and maximizing throughput and security of supply.The location model is applied to the Iberian high pressure natural gas network, a system modelised with 65 demand nodes. These nodes are linked by physical and virtual pipelines – road trucks with gas in liquefied form. The location model result shows the best places to locate, with the optimal demand allocation and the most economical gas transport mode: by pipeline or by road truck.
URI: http://hdl.handle.net/10400.22/1313
Aparece nas colecções:ISEP – GECAD – Comunicações em eventos científicos

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