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

• Tipo: Artigo em Revista Científica Internacional
• Data: 2006

Autores

Catalao, JPS (Autor) Outra; Mariano, SJPS (Autor) Outra; Mendes, VMF (Autor) Outra; Ferreira, LAFM (Autor) Outra

Revista

Título: Electric Power Systems Research

Vol. 76 Nº 5

Páginas: 404-412

ISSN: 0378-7796

Editora: Elsevier

Indexação

ISI Web of Knowledge - 52 Citações

Scopus - 63 Citações

Outras Informações

ID Authenticus: P-004-MD0

DOI: 10.1016/j.epsr.2005.09.002

Abstract (EN): 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9