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Distributed robust operational optimization of networked microgrids embedded interconnected energy hubs
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DOI：10.1016/j.energy.2020.117440.png)
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Abstract
En 中文
An interconnected energy hubs (EHs) framework aims to enhance the efficiency of the multicarrier energy system through realizing optimal coordination among existing players. In this paper, EH concept is studied in networked microgrids (MGs) structure to exploit the potential capabilities of microgrids in satisfying various types of energy demands. In the proposed model, MGs and distribution network are independent entities which have their local scheduling problem. To coordinate the operation of entities, a distributed algorithm based on the alternating direction method of multipliers (ADMM) is exploited to resolve the conflict of exchanged power between multi-MGs and distribution network. Considering the uncertainties, a distributed robust model is employed to precisely analyze the performance of multicarrier energy networked MGs in different robustness levels. The efficiency of the ADMM model on integrated energy systems is tested on a networked MGs. The achieved results can ensure the light computational burden and convergence of proposed distributed algorithm. The proposed EH optimization problem is solved via Gurobi optimizer packages. According to the results, the ADMM converges to the final solution after 5 iterations, and with increasing the robustness level, the operation costs of EHs increases. The obtained results by Gurobi is more optimal than heuristic algorithms. (C) 2020 Elsevier Ltd. All rights reserved.
Keywords:
Networked microgrids
Energy hub
Distributed algorithm
Alternating direction method of multipliers (ADMM)
Robust optimization
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