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Optimal maintenance scheduling of a gas engine power plant using generalized disjunctive programming
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Orientador(es)
Resumo(s)
A new continuous-time model for long-term scheduling of a gas engine power plant with parallel units is presented. Gas engines are shut down according to a regular maintenance plan that limits the
number of hours spent online. To minimize salary expenditure with skilled labor, a single maintenance team is considered which is unavailable during certain periods of time. Other challenging constraints involve constant minimum and variable maximum power demands. The objective is to maximize the revenue from electricity sales assuming seasonal variations in electricity pricing by reducing idle times and shutdowns in
high-tariff periods. By first developing a generalized disjunctive programming model and then applying both big-M and hull reformulation techniques, we reduce the burden of finding the appropriate set of
mixed-integer linear constraints. Through the solution of a real-life problem, we show that the proposed formulations are very efficient computationally, while gaining valuable insights about the system.
Descrição
Palavras-chave
Mathematical modelling Optimization Mixed-integer linear programming Planning
Contexto Educativo
Citação
Castro, P.M.; Grossmann, I.E.; Veldhuizen, P.; Esplin, D. - Optimal maintenance scheduling of a gas engine power plant using generalized disjunctive programming. In: Aiche Journal, 2014, Vol. 60, nº 6, p. 2083-2097