Catalão, João Paulo da SilvaPousinho, Hugo Miguel InácioMendes, Victor2013-02-152013-02-152011-01CATALÃO, J. P. S.; POUSINHO, H. M. I.; MENDES, V. M. F. - Hydro energy systems management in Portugal: Profit-based evaluation of a mixed-integer nonlinear approach. Energy. ISSN 0360-5442. Vol. 36, n.º 1 (2011) p. 500-507.0360-5442http://hdl.handle.net/10400.21/2204In this paper, a novel mixed-integer nonlinear approach is proposed to solve the short-term hydro scheduling problem in the day-ahead electricity market, considering not only head-dependency, but also start/stop of units, discontinuous operating regions and discharge ramping constraints. Results from a case study based on one of the main Portuguese cascaded hydro energy systems are presented, showing that the proposedmixed-integer nonlinear approach is proficient. Conclusions are duly drawn. (C) 2010 Elsevier Ltd. All rights reserved.engShort-Term Hydro SchedulingMixed-Integer Nonlinear ProgrammingCascaded ReservoirsHead-DependencyElectricity PricesUnit CommitmentNeural-NetworkArima ModelsHeadMarketGenerationOptimizationStrategiesDispatchjournal article