nonlinear network flows

Optimum Short-Term Hydrothermal Scheduling with Spinning Reserve through Network Flows

Publication TypeConference Paper
Year of Publication1995
AuthorsHeredia, F. J.; Nabona, N.
Conference NameIEEE/Power Engineering Society Winter Meeting
Conference Date02/1995
Conference LocationNew York, EEUU
Type of WorkContributed oral presentation
Key Wordsnonlinear network flows; side constraints; power systems; short-term hydrothermal OPF; spinning reserve; research
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Network Model of Short-Term Optimal Hydrothermal Power Flow with Security Constraints

Publication TypeConference Paper
Year of Publication1995
AuthorsChiva, A.; Heredia, F.J.; Nabona, N.
Conference NameIEEE '95 Stockholm Power Tech
Series TitleInternational Symposium on Electric Power Engineering
Volume6, PS
Pagination67-73
Conference Date18-22/06/1995
PublisherRoyal Institute of Technology and IEEE Power Engineering Society
Conference LocationStockholm, Sweden
Type of WorkContributed oral presentation
Key Wordsresearch; nonlinear network flows; side constraints; power systems; short-term hydrothermal OPF; spinning reserve; transmission security contraints; research
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Planificación Hidrotérmica a Corto Plazo. Optimización de un modelo acoplado de flujos no lineales en red

Publication TypeConference Paper
Year of Publication1997
AuthorsHeredia, F. J.; Nabona, N.
Conference NameXVIII Congreso Nacional de Estadística e Investigación Operativa
Conference Date11-14/03/1997
Conference LocationValència, Spain
Type of WorkContributed oral presentation
Key Wordsnonlinear network flows; side constraints; power systems; short-term hydrothermal OPF; research
AbstractEl Modelo Acoplado del problema de Planificación Hidrotérmica a Corto Plazo permite optimizar conjuntamente el sistema hidráulico, térmico y la red de transmisión mediante la resolución de un único problema de flujos no lineales en red con restricciones laterales. Este trabajo describe el modelo matemático, los resultados computacionales y las posibles extensiones del método.
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Nonlinear network flows with side constraints applied to short term hydrothermal coordination of electricity generation

Publication TypeConference Paper
Year of Publication1992
AuthorsHeredia, F. J.; Nabona, N.
Conference NameEuropean Conference on Numerical Methods in Engineering '92
Conference Date1992
Conference LocationBrussels, Belgium
Type of WorkContributed oral presentation
Key Wordsnonlinear network flows; side constraints; power systems; short-term hydrothermal OPF; research
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Nonlinear network flow problems with side constraints through projected Lagrangian methods

Publication TypeConference Paper
Year of Publication1997
AuthorsHeredia, F. J.
Conference NameEURO XV / INFORMS XXXIV Joint International Conference
Conference Date14-17/06/97
Conference LocationBarcelona, Spain
Type of WorkContributed oral presentation
Key Wordsnonlinear network flows; nonlinear side constraints; projected lagrangian methods; research
AbstractRecents numerical experiments show that the resolution of the Nonlinear network Flow problem with side Constraints (NFC) can be significantly sped up, when the side constraints are linear, by specialised codes based on a conjunction of primal partitioning techniques and active set methods. A natural extension of these methods one is to be used into a Projected Lagrangian Algorithm (PLA). A specialised (PLA) will solve the general (NFC) problem through the optimization of a sequence of (NFC) with linear side constraints, taking benefit of the efficiency of the linear side constraints codes. The description of this methodology will be presented together with the preliminary numerical results.
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Computational study of NOXCB: an optimization code for the nonlinear network flow problem with linear side constraints

Publication TypeConference Paper
Year of Publication1999
AuthorsHeredia, F. J.
Conference Name19th IFIP TC7 Conference on System Modelling and Optimization
Conference Date12-16/07/99
Conference LocationCambridge, U.K.
Type of WorkContributed oral presentation
Key Wordsnonlinear network flows; linear side constraints; research
AbstractThe NOXCB package is an optimization code for the Nonlinear Network flow problem with Linear side Constraints (NNLC). It is based on an active set method which exploits the network structure through primal partitionning techniques. This paper presents the results arising from the solution of a set of about 100 (NNLC) problems, ranging from medium to large scale.
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Constrained nonlinear network flow problems through projected Lagrangian methods

Publication TypeConference Paper
Year of Publication2000
AuthorsHeredia, F. J.
Conference Name4th world conference on Circuits, Systems, Communications and Computers CSCC2000
Conference Date9-16/07/2000
Conference LocationGreece, Athens
Type of WorkContributed oral presentation
Key Wordsnonlinear network flows; nonlinear side constraints; research
AbstractRecents numerical experiments show that the resolution of the Nonlinear network Flow problem with side constraints (NFC) can be significantly sped up, when the side constraints are linear, by specialised codes based on a conjunction of primal partitioning techniques and active set methods. A natural extension of these methods one is to be used into a Projected Lagrangian Algorithm (PLA). A specialised (PLA) will solve the general (NFC) problem through the optimization of a sequence of (NFC) with linear side constraints, taking benefit of the efficiency of the linear side constraints codes. The description of this methodology will be presented together with the preliminary numerical results.
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Planificación Óptima de Gran Dimensión de la Producción Hidrotérmica de Energía Eléctrica a Corto Plazo (TAP96-1044).

Publication TypeFunded research projects
Year of Publication1996
AuthorsF.-Javier Heredia
Type of participationFull time researcher
Duration07/1996-06/1999
Funding organizationMinisterio de Educación y Ciencia / Comisión Interministerial de Ciencia y Tecnologia
PartnersDepartament d'Estadística i Investigació Operativa / Universitat Politècnica de Catalunya
Full time researchers9
Budget56.428€
Project codeTAP96-1044
Key Wordsresearch; nonlinear network flows; side constraints; power systems; transmission network; short-term hydrothermal coordination; project; public; competitive; cicyt; energy
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Planificación óptima de gran dimensión de la produción hidrotérmica de energia eléctrica (TAP99-1075-C02-01).

Publication TypeFunded research projects
Year of Publication2000
AuthorsF.-Javier Heredia
Type of participationFull researcher
Duration01/2000-12/2002
Funding organizationMinisterio de Educación y Ciencia / Comisión Interministerial de Ciencia y Tecnologia
PartnersDepartament d'Estadística i Investigació Operativa, Univ. Politècnica de Catalunya
Full time researchers5
Budget76.785€
Project codeTAP99-1075-C02-01
Key Wordsresearch; nonlinear network flows; side constraints; power systems; transmission network; short-term hydrothermal coordination; long-term hydrothermal coordination; project; public; competitive; cicyt; energy
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PLANNC: a projected Lagrangian based implementation for constrained nonlinear network flow problems

Publication TypeConference Paper
Year of Publication2001
AuthorsHeredia, F. J.
Conference Name20h IFIP TC7 Conference on System Modelling and Optimization
Conference Date23-27/07/2001
Conference LocationTrier, Germany.
Type of WorkContributed oral presentation
Key Wordsnonlinear network flows; nonlinear side constraints; research
AbstractRecents numerical experiments show that the resolution of the Nonlinear network Flow problem with side Constraints (NFC) can be significantly sped up, when the side constraints are linear, by specialised codes based on a conjunction of primal partitioning techniques and active set methods. A natural extension of these methods one is to be used into a Projected Lagrangian Algorithm (PLA). A specialised (PLA) will solve the general (NFC) problem through the optimization of a sequence of (NFC) with linear side constraints, taking benefit of the efficiency of the linear side constraints codes. The description of this methodology will be presented together with the preliminary numerical results.
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