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Modeling a nonlinear water transfer between two reservoirs in a midterm hydroelectric scheduling tool

R. Moraga, J. García-González, E. Parrilla, S. Nogales

In a competitive environment, operation and planning decisions of generating units are decentralized. Therefore the management of hydroelectric generation resources requires the development of advanced planning and scheduling tools adapted to the particular needs of each company. This paper presents a method for considering natural water transfers through a pipeline in the context of a midterm hydro scheduling model. The main complexity of gravitational transfer modeling resides in considering the nonlinear relation between the water levels in the connected reservoirs and the transfer flow. The methodology proposed consists first in simplifying the problem by means of a change of variables, subsequently using a piecewise linear approximation of the transfer flow equation in order to consider it within a mixed integer linear programming tool, and ultimately adjusting the final solution. The proposed methodology is currently being used to manage the Sil River hydro basin in the northwest of Spain, with satisfactory results, as shown in the case study.


Palabras clave: midterm hydroscheduling; optimization; reservoir management


Water Resources Research. Volumen: 43 Número: 4-W04499 Páginas: 1-11

Índice de impacto JCR y cuartil WoS: 2.154 - Q1 (2007); 4.142 - Q1 (2018)

Referencia DOI: DOI icon 10.1029/2006WR005078    

Publicado en papel: Abril 2007.



Cita:
R. Moraga, J. García-González, E. Parrilla, S. Nogales. Modeling a nonlinear water transfer between two reservoirs in a midterm hydroelectric scheduling tool. Water Resources Research. vol. 43, no. 4-W04499, pp. 1-11, Abril 2007.


    Líneas de investigación:
  • *Planificación táctica a medio plazo

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