Home

research

printable page

Large scale nonlinear network optimization with linear side constraints

Sun, 10/28/2007 - 20:44 — admin
Publication TypeConference Paper
Year of Publication1991
AuthorsHeredia, F. J.; Nabona, N.
Conference Name11th European Congress on Operations Research
Conference Date1991
Conference LocationAachen, Germany
Type of WorkContributed oral presentation
Key Wordsnonlinear network flows; linear side constraints; research
ExportTagged XML BibTex

Numerical implementation and computational results of nonlinear network optimization with linear side constraints

Sun, 10/28/2007 - 20:42 — admin
Publication TypeConference Paper
Year of Publication1991
AuthorsHeredia, F. J.; Nabona, N.
Conference Name15th IFIP Conference on System Modelling and Optimization
Conference Date1991
Conference LocationZurich, Switzerland
Type of WorkContributed oral presentation
Key Wordsnonlinear network flows; linear side constraints; research
ExportTagged XML BibTex

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

Sun, 10/28/2007 - 19:47 — admin
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
ExportTagged XML BibTex

Planificación Hidrotérmica a Corto Plazo. Optimización de un modelo acoplado de flujos no lineales en red

Sun, 10/28/2007 - 19:03 — admin
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.
ExportTagged XML BibTex

Nonlinear network flows with side constraints applied to short term hydrothermal coordination of electricity generation

Sun, 10/28/2007 - 18:50 — admin
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
ExportTagged XML BibTex

Nonlinear network flow problems with side constraints through projected Lagrangian methods

Sun, 10/28/2007 - 18:32 — admin
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.
ExportTagged XML BibTex

Short-Term Hydrothermal Coordination by Augmented Lagrangean Relaxation: a new Multiplier Updating

Sun, 10/28/2007 - 18:21 — admin
Publication TypeConference Paper
Year of Publication1998
AuthorsBeltran, C.; Heredia, F. J.
Conference NameIX Congreso Latino-Iberoamericano de Investigación Operativa
Conference Date31-4/08/98
Conference LocationBuenos Aires, Argentina
Type of WorkContributed oral presentation
Key Wordsaugmented lagrangian relaxation; radar subgradient method; generalized unit commitment; research
AbstractAugmented Lagrangean Relaxation Method (ALRM) is one of the most powerfull technique to solve the Short­Term Hydrothermal Coordination Problem (STHC Problem ). A crucial step when using the ALR Method is the multipliers updating. In this paper we present an efficient new multiplier updating procedure: the Gradient Method with Radar Step. The method has been successfully tested solving large ­scale exemples of the STHC Problem
ExportTagged XML BibTex

Computational study of NOXCB: an optimization code for the nonlinear network flow problem with linear side constraints

Sun, 10/28/2007 - 18:11 — admin
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.
URLClick Here
ExportTagged XML BibTex

Constrained nonlinear network flow problems through projected Lagrangian methods

Sun, 10/28/2007 - 17:28 — admin
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.
ExportTagged XML BibTex

SLOEGAT Project. Short and Long term Optimization of Energy Generation And Trading (Esprit 22695).

Thu, 10/25/2007 - 00:30 — admin
Publication TypeFunded research projects
Year of Publication1996
AuthorsF.-Javier Heredia
Type of participationFull time researcher
Duration12/1996-05/1999
Funding organizationEuropean Union, ESPRIT Programme
PartnersUniversidad Politécnica de Catalunya, Iberdrola, Universidad de Aachen, VEW Alemania, SIEMENS Austria
Full time researchers4 (DEIO/UPC)
Budget180.238€
Project codeEsprit 22695
Key Wordsresearch; nonlinear network flows; side constraints; power systems; transmission network; short-term hydrothermal coordination; long-term hydrothermal coordination project; public; competitive; EU; energy
AbstractThe project aims to develop, implement and test, on a high performance computing platform, a software system to simulate and optimise the energy generation and trading coordination planning process in large electricity generating systems, both in the short (1 day-1 week) and medium to long term (one-two years). Special consideration will be given to this process to the growing importance of the energy trading problem in a deregulated market.
URLClick Here
ExportTagged XML BibTex
« first‹ previous…111213141516171819next ›last »
Syndicate content