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Energies 2017, 10(9), 1443; https://doi.org/10.3390/en10091443

Control Strategies for Improving Energy Efficiency and Reliability in Autonomous Microgrids with Communication Constraints

1
Radiocommunications Reference Center (CRR) - National Institute of Telecomunications (INATEL), Av. João de Camargo, 510, Santa Rita do Sapucaí 37540-000, Brazil
2
Federal University of Itajubá, Av. BPS, 1903, Pinheirinho, Itajubá 37540-000, Brazil
3
Technical University of Catalunya, 08800 Vilanova i la Geltrù, Spain
4
Federal University of Maranhão, Av. Portugueses 1966, São Luis 65080-805, Brazil
*
Author to whom correspondence should be addressed.
Received: 4 September 2017 / Revised: 15 September 2017 / Accepted: 15 September 2017 / Published: 19 September 2017
(This article belongs to the Special Issue Control and Communication in Distributed Generation Systems)
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Abstract

Microgrids are a feasible path to deploy smart grids, an intelligent and highly automated power system. Their operation demands a dedicated communication infrastructure to manage, control and monitor the intermittent sources of energy and loads. Therefore, smart devices will be connected to support the growth of grid smartness increasing the dependency on communication networks, which consumes a high amount of power. In an energy-limited scenario, one of the main issues is to enhance the power supply time. Therefore, this paper proposes a hybrid methodology for microgrid energy management, integrated with a communication infrastructure to improve and to optimize islanded microgrid operation at maximum energy efficiency. The hybrid methodology applies some control management rules, such as intentional load shedding, priority load management, and communication energy saving. These energy saving rules establish a trade-off between increasing microgrid energy availability and communication system reliability. To achieve a compromised solution, a continuous time Markov chain model describes the impact of energy saving policies into system reliability. The proposed methodology is simulated and tested with the help of the modified IEEE 34 node test-system. View Full-Text
Keywords: smart grids, distributed resources, microgrids, communication networks smart grids, distributed resources, microgrids, communication networks
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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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Portelinha Júnior, F.M.; Carlos Zambroni de Souza, A.; Castilla, M.; Queiroz Oliveira, D.; Ribeiro, P.F. Control Strategies for Improving Energy Efficiency and Reliability in Autonomous Microgrids with Communication Constraints. Energies 2017, 10, 1443.

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