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Natural gas system operation: lagrangean optimization techniques

dc.contributor.authorNogueira, Teresa
dc.contributor.authorVale, Zita
dc.date.accessioned2013-04-16T15:37:52Z
dc.date.available2013-04-16T15:37:52Z
dc.date.issued2008
dc.date.updated2013-04-12T14:52:07Z
dc.description.abstractTo comply with natural gas demand growth patterns and Europe´s import dependency, the gas industry needs to organize an efficient upstream infrastructure. The best location of Gas Supply Units – GSUs and the alternative transportation mode – by phisical or virtual pipelines, are the key of a successful industry. In this work we study the optimal location of GSUs, as well as determining the most efficient allocation from gas loads to sources, selecting the best transportation mode, observing specific technical restrictions and minimizing system total costs. For the location of GSUs on system we use the P-median problem, for assigning gas demands nodes to source facilities we use the classical transportation problem. The developed model is an optimisation-based approach, based on a Lagrangean heuristic, using Lagrangean relaxation for P-median problems – Simple Lagrangean Heuristic. The solution of this heuristic can be improved by adding a local search procedure - the Lagrangean Reallocation Heuristic. These two heuristics, Simple Lagrangean and Lagrangean Reallocation, were tested on a realistic network - the primary Iberian natural gas network, organized with 65 nodes, connected by physical and virtual pipelines. Computational results are presented for both approaches, showing the location gas sources and allocation loads arrangement, system total costs and gas transportation mode.por
dc.identifier.isbn9781615678709
dc.identifier.urihttp://hdl.handle.net/10400.22/1363
dc.language.isoengpor
dc.publisherCurran Associates, Inc.por
dc.relation.ispartofseriesInternational Gas Union Research Conference; Vol. 2
dc.subjectLagrangean optimization techniquespor
dc.subjectNatural gaspor
dc.titleNatural gas system operation: lagrangean optimization techniquespor
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceParis, Francepor
oaire.citation.titleInternational Gas Union Research Conference, 2008 (IGRC 2008)por
oaire.citation.volumeVol. 2por
person.familyNameVale
person.givenNameZita
person.identifier632184
person.identifier.ciencia-id721B-B0EB-7141
person.identifier.orcid0000-0002-4560-9544
person.identifier.ridA-5824-2012
person.identifier.scopus-author-id7004115775
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
relation.isAuthorOfPublicationff1df02d-0c0f-4db1-bf7d-78863a99420b
relation.isAuthorOfPublication.latestForDiscoveryff1df02d-0c0f-4db1-bf7d-78863a99420b

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