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Energies 2017, 10(12), 2029; doi:10.3390/en10122029

A Metaheuristic Approach to the Multi-Objective Unit Commitment Problem Combining Economic and Environmental Criteria

1
Departamento de Matemática, Instituto Superior de Engenharia do Porto, 4200-072 Porto, Portugal
2
LIAAD-INESC-TEC, Instituto de Engenharia de Sistemas e Computadores, Tecnologia e Ciência, 4200-465 Porto, Portugal
3
Faculdade de Economia, Universidade do Porto, 4200-464 Porto, Portugal
4
SYSTEC-ISR-Porto, Faculdade de Engenharia, Universidade do Porto, 4200-465 Porto, Portugal
This paper is an extended version of our paper published in Energy Procedia: A multi-objective unit commitment problem combining economic and environmental criteria in a metaheuristic approach. Energy Procedia 2017, 136, 362–368.
*
Author to whom correspondence should be addressed.
Received: 31 October 2017 / Revised: 24 November 2017 / Accepted: 29 November 2017 / Published: 1 December 2017
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Abstract

We consider a Unit Commitment Problem (UCP) addressing not only the economic objective of minimizing the total production costs—as is done in the standard UCP—but also addressing environmental concerns. Our approach utilizes a multi-objective formulation and includes in the objective function a criterion to minimize the emission of pollutants. Environmental concerns are having a significant impact on the operation of power systems related to the emissions from fossil-fuelled power plants. However, the standard UCP, which minimizes just the total production costs, is inadequate to address environmental concerns. We propose to address the UCP with environmental concerns as a multi-objective problem and use a metaheuristic approach combined with a non-dominated sorting procedure to solve it. The metaheuristic developed is a variant of an evolutionary algorithm, known as Biased Random Key Genetic Algorithm. Computational experiments have been carried out on benchmark problems with up to 100 generation units for a 24 h scheduling horizon. The performance of the method, as well as the quality, diversity and the distribution characteristics of the solutions obtained are analysed. It is shown that the method proposed compares favourably against alternative approaches in most cases analysed. View Full-Text
Keywords: pollutant emissions; genetic algorithm; multi-objective optimization; unit commitment pollutant emissions; genetic algorithm; multi-objective optimization; unit commitment
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Roque, L.A.C.; Fontes, D.B.M.M.; Fontes, F.A.C.C. A Metaheuristic Approach to the Multi-Objective Unit Commitment Problem Combining Economic and Environmental Criteria. Energies 2017, 10, 2029.

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