Comparison of Two Energy Management System Strategies for Real-Time Operation of Isolated Hybrid Microgrids

Luis Santiago Azuara-Grande, Santiago Arnaltes, Jaime Alonso-Martinez and Jose Luis Rodriguez-Amenedo
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Luis Santiago Azuara-Grande: Department of Electrical Engineering, Universidad Carlos III de Madrid, 28911 Leganes, Spain
Santiago Arnaltes: Department of Electrical Engineering, Universidad Carlos III de Madrid, 28911 Leganes, Spain
Jaime Alonso-Martinez: Department of Electrical Engineering, Universidad Carlos III de Madrid, 28911 Leganes, Spain
Jose Luis Rodriguez-Amenedo: Department of Electrical Engineering, Universidad Carlos III de Madrid, 28911 Leganes, Spain

Energies, 2021, vol. 14, issue 20, 1-15

Abstract: The propagation of hybrid power systems (solar–diesel–battery) has led to the development of new energy management system (EMS) strategies for the effective management of all power generation technologies related to hybrid microgrids. This paper proposes two novel EMS strategies for isolated hybrid microgrids, highlighting their strengths and weaknesses using simulations. The proposed strategies are different from the EMS strategies reported thus far in the literature because the former enable the real-time operation of the hybrid microgrid, which always guarantees the correct operation of a microgrid. The priority EMS strategy works by assigning a priority order, while the optimal EMS strategy is based on an optimization criterion, which is set as the minimum marginal cost in this case. The results have been obtained using MATLAB/Simulink to verify and compare the effectiveness of the proposed strategies, through a dynamic microgrid model to simulate the conditions of a real-time operation. The differences in the EMS strategies as well as their individual strengths and weaknesses, are presented and discussed. The results show that the proposed EMS strategies can manage the system operation under different scenarios and help power system operator obtain the optimal operation schemes of the microgrid.

Keywords: energy management system; battery energy storage system; hybrid systems; optimization; microgrid; renewable energy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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