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Type: Artigo de periódico
Title: Unit Commitment Of Hydro Dominated Systems
Author: Arce Encina A.S.
Filho S.S.
Ohishi T.
Cicogna M.A.
Abstract: This paper is concerned with the unit commitment of hydro generating units on an hourly basis throughout a single day. A performance criterion that takes into consideration variations in tailrace elevation, penstock head loss and turbine-generator efficiency is suggested as the objective function for the optimization model. A heuristic procedure based on Lagrangian Relaxation was implemented to solve the problem. The approach was then tested on a system composed of sixteen hydro plants, one hundred generating units, and an installed capacity of 21,933 MW, in the Brazilian power system. The scheduling of generation verified for a typical day was used for comparison with the solution proposed by this procedure. The results show a significant improvement in terms of hydro conversion efficiency. © 2008 The Berkeley Electronic Press. All rights reserved.
Rights: fechado
Identifier DOI: 
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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