Real-time operation of multi-micro-grids using a multi-agent system. (1st May 2019)

• Record Type: Journal Article
• Authors: Keshta, H.E.; Ali, A.A.; Saied, E.M.; Bendary, F.M.
• Is Part Of: Energy. Volume 174(2019)
• Page Start: 576
• Page End: 590
• Publication Date: 2019-05-01
• Subjects: Multi-micro-grids -- Multi-agent system (MAS) -- Distributed generation and energy management; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Energy consumption -- Periodicals; 333.7905
• DOI: 10.1016/j.energy.2019.02.145
• Languages: English
• ISSNs: 0360-5442

Abstract

Abstract: The inaccurate prediction of solar irradiance, wind speed and demand load may significantly influence the operation of micro-grids. This condition causes unbalances between generation and load that lead to variations in DC and AC bus voltages, and may affect system stability. A multi-agent system (MAS) is proposed in this study to achieve optimal energy management for voltage regulation and to enhance the stability of a system under different weather conditions and load perturbations for two connected micro-grids. Optimum operation is achieved through two stages. The first stage is the optimum day-ahead energy from each source based on historical data. The second stage is implemented to maintain the balance between generation and load by considering economic operation during real-time operation. This stage can be realized by controlling converters related to each source in both micro-grids. Different scenarios are presented to evaluate the effectiveness of the proposed MAS. The simulation results demonstrate that the performance of the proposed energy management system is efficient. Highlights: Two stage optimization approach for efficient energy management system. Long term optimal scheduling for energy generated from different sources. Dynamic performance of the two connected micro-grids. Economically maintain system balance during real-time operation. Efficient real-time energy management system under different operating conditions.