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Smart city article details
| Title | A Hierarchical Structure For Harnessing The Flexibility Of Residential Microgrids Within Active Distribution Networks: Advancing Toward Smart Cities |
|---|---|
| ID_Doc | 2064 |
| Authors | Zhu J.; Alharthi Y.Z.; Wang Y.; Fatemi S.; Ahmarinejad A. |
| Year | 2024 |
| Published | Sustainable Cities and Society, 106 |
| DOI | http://dx.doi.org/10.1016/j.scs.2024.105398 |
| Abstract | The increasing integration of Renewable Energy Sources (RESs) and the replacement of fossil fuel vehicles with electric types in distribution systems, while enhancing economic and environmental aspects, have introduced new challenges to network production-consumption balance due to the inherent randomness of these resources. This factor has magnified the significance of balancing markets in renewable-based distribution networks, as these markets address uncertainties and are vital for operational stability. Consequently, this paper introduces a two-stage multi-layer methodology for organizing local energy and balancing markets among Residential Microgrids (RMGs) within an Active Distribution Network (ADN). The AND operator organizes both energy and balancing markets. In the first stage, the intra-day energy market operates, engaging non-profit-seeking aggregators, RMGs, and ADN. Moving to the second stage, the intra-hour balancing market is conducted involving profit-seeking Flexible Load (FL) and Electric Vehicle (EV) aggregators, RMGs, and ADN. The ADN operator organizes both markets and can alter the network topology online within the energy market. The planning of profit-seeking aggregators is formulated using Karush-Kuhn-Tucker (KKT) conditions and Strong Duality Theory (SDT) in the form of Mathematical Programming with Equilibrium Constraints (MPEC), considering the correlation of aggregators' profit with the satisfaction index of end-users. The simulation results of the proposed methodology on a modified 118-bus IEEE distribution test system using GAMS indicate that this approach not only provides a significant share of balancing capacities through FLs and EVs but also ensures system stability against intra-hour fluctuations across various scenarios. The results also validate that the proposed methodology achieves a reduction of 24.8 % in power losses and 5.06 % in market costs, while simultaneously ensuring profitability for both aggregators and RMGs. © 2024 Elsevier Ltd |
| Author Keywords | Active distribution networks; Electric vehicle fleets; Electricity markets; Microgrids; Renewable energy sources; Smart prosumers |
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