Parameterisation effect on the behaviour of a head-dependent hydro chain using a nonlinear model

Detalhes bibliográficos
Autor(a) principal: Catalão, João Paulo da Silva
Data de Publicação: 2006
Outros Autores: Mariano, S., Mendes, V. M. F., Ferreira, L. A. F. M.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.6/616
Resumo: This paper is on the problem of short-term hydro scheduling (STHS), particularly concerning a head-dependent hydro chain. We use a method based on nonlinear programming (NLP), namely quadratic programming, to consider hydroelectric power generation a function of water discharge and of the head. The method has been applied successfully to solve a test case based on a realistic cascaded hydro system with a negligible computational time requirement and is also applied to show that the role played by reservoirs in the hydro chain do not depend only on their relative position. As a new contribution to earlier studies, which presented reservoir operation rules mainly for medium and long-term planning procedures, we show that the physical data defining hydro chain parameters used in the nonlinear model have an effect on the STHS, implying different optimal storage trajectories for the reservoirs accordingly not only with their position in the hydro chain but also with the new parameterisation defining the data for the hydro system. Moreover, considering head dependency in the hydroelectric power generation, usually neglected for hydro plants with a large storage capacity, provides a better short-term management of the conversion of the potential energy available in the reservoirs into electric energy, which represents a major advantage for the hydroelectric utilities in a competitive electricity market.
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spelling Parameterisation effect on the behaviour of a head-dependent hydro chain using a nonlinear modelShort-term hydro scheduling (STHS)Nonlinear programming (NLP)Cascaded reservoirsVariable headThis paper is on the problem of short-term hydro scheduling (STHS), particularly concerning a head-dependent hydro chain. We use a method based on nonlinear programming (NLP), namely quadratic programming, to consider hydroelectric power generation a function of water discharge and of the head. The method has been applied successfully to solve a test case based on a realistic cascaded hydro system with a negligible computational time requirement and is also applied to show that the role played by reservoirs in the hydro chain do not depend only on their relative position. As a new contribution to earlier studies, which presented reservoir operation rules mainly for medium and long-term planning procedures, we show that the physical data defining hydro chain parameters used in the nonlinear model have an effect on the STHS, implying different optimal storage trajectories for the reservoirs accordingly not only with their position in the hydro chain but also with the new parameterisation defining the data for the hydro system. Moreover, considering head dependency in the hydroelectric power generation, usually neglected for hydro plants with a large storage capacity, provides a better short-term management of the conversion of the potential energy available in the reservoirs into electric energy, which represents a major advantage for the hydroelectric utilities in a competitive electricity market.uBibliorumCatalão, João Paulo da SilvaMariano, S.Mendes, V. M. F.Ferreira, L. A. F. M.2010-04-28T10:07:26Z20062006-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.6/616enginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-12-15T09:35:54Zoai:ubibliorum.ubi.pt:10400.6/616Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:42:38.776898Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Parameterisation effect on the behaviour of a head-dependent hydro chain using a nonlinear model
title Parameterisation effect on the behaviour of a head-dependent hydro chain using a nonlinear model
spellingShingle Parameterisation effect on the behaviour of a head-dependent hydro chain using a nonlinear model
Catalão, João Paulo da Silva
Short-term hydro scheduling (STHS)
Nonlinear programming (NLP)
Cascaded reservoirs
Variable head
title_short Parameterisation effect on the behaviour of a head-dependent hydro chain using a nonlinear model
title_full Parameterisation effect on the behaviour of a head-dependent hydro chain using a nonlinear model
title_fullStr Parameterisation effect on the behaviour of a head-dependent hydro chain using a nonlinear model
title_full_unstemmed Parameterisation effect on the behaviour of a head-dependent hydro chain using a nonlinear model
title_sort Parameterisation effect on the behaviour of a head-dependent hydro chain using a nonlinear model
author Catalão, João Paulo da Silva
author_facet Catalão, João Paulo da Silva
Mariano, S.
Mendes, V. M. F.
Ferreira, L. A. F. M.
author_role author
author2 Mariano, S.
Mendes, V. M. F.
Ferreira, L. A. F. M.
author2_role author
author
author
dc.contributor.none.fl_str_mv uBibliorum
dc.contributor.author.fl_str_mv Catalão, João Paulo da Silva
Mariano, S.
Mendes, V. M. F.
Ferreira, L. A. F. M.
dc.subject.por.fl_str_mv Short-term hydro scheduling (STHS)
Nonlinear programming (NLP)
Cascaded reservoirs
Variable head
topic Short-term hydro scheduling (STHS)
Nonlinear programming (NLP)
Cascaded reservoirs
Variable head
description This paper is on the problem of short-term hydro scheduling (STHS), particularly concerning a head-dependent hydro chain. We use a method based on nonlinear programming (NLP), namely quadratic programming, to consider hydroelectric power generation a function of water discharge and of the head. The method has been applied successfully to solve a test case based on a realistic cascaded hydro system with a negligible computational time requirement and is also applied to show that the role played by reservoirs in the hydro chain do not depend only on their relative position. As a new contribution to earlier studies, which presented reservoir operation rules mainly for medium and long-term planning procedures, we show that the physical data defining hydro chain parameters used in the nonlinear model have an effect on the STHS, implying different optimal storage trajectories for the reservoirs accordingly not only with their position in the hydro chain but also with the new parameterisation defining the data for the hydro system. Moreover, considering head dependency in the hydroelectric power generation, usually neglected for hydro plants with a large storage capacity, provides a better short-term management of the conversion of the potential energy available in the reservoirs into electric energy, which represents a major advantage for the hydroelectric utilities in a competitive electricity market.
publishDate 2006
dc.date.none.fl_str_mv 2006
2006-01-01T00:00:00Z
2010-04-28T10:07:26Z
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.6/616
url http://hdl.handle.net/10400.6/616
dc.language.iso.fl_str_mv eng
language eng
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instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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