4.6 Article

Optimization of production scheduling with time-dependent and machine-dependent electricity cost for industrial energy efficiency

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SPRINGER LONDON LTD
DOI: 10.1007/s00170-013-4749-8

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Production scheduling; Unrelated parallel machine; Genetic algorithm; Smart grid; Demand response; Energy efficiency

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In many industrialized countries, manufacturing industries pay stratified electricity charges depending on the time of day (i.e., peak-load, mid-load, and off-peak-load). In contrast, the emerging smart grid concept may demand that industries pay real-time hourly electricity costs so as to use energy most efficiently. This paper deals with the production and energy efficiency of the unrelated parallel machine scheduling problem. This method allows the decision maker to seek a compromise solution using the weighted sum objective of production scheduling and electricity usage. Reliability models are used to consider the energy cost aspect of the problem. This paper aims to optimize the weighted sum of two criteria: the minimization of the makespan of production and the minimization of time-dependent electricity costs. We suggest a hybrid genetic algorithm with our blank job insertion algorithm and demonstrate its performance in simulation experiments.

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