Economic Sizing of Grid for The Efficient Operation Of A Microgrid System

Misra, Srikant; Panigrahi, Pratap Kumar; Dey, Bishwajit; Ghosh, Sandip

doi:10.1109/isssc56467.2022.10051349

Cited by 1 publication

(1 citation statement)

References 29 publications

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“…However, the DC distribution system also faces several challenges and limitations: Due to the possible inclusion of various types of energy resources, such as solar, wind, and battery energy storage (BES), and diverse load demands and operational states, there is a need for effective coordination and management of energy flow and power balance among them. The system may consist of multiple levels of energy interaction, including microgrid‐level, cluster‐level, and main grid‐level, which adds complexity to control and management. Energy management requires consideration of factors such as electricity markets and pricing to achieve economic efficiency and sustainability [9]. The system's faults may include internal failures within microgrids, connectivity issues between microgrids, and connection problems with the main grid.…”

Section: Introductionmentioning

confidence: 99%

Coordinated Control of DC Distribution System Based on Three‐Level Energy Interaction

Tian,

Chen,

Wang

2023

IEEJ Transactions Elec Engng

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When compared to the AC distribution system, the DC distribution system can better adapt to the integration of large‐scale distributed generations (DGs), but it also has some challenges and limitations due to its complex control. This paper investigates the coordinated control of a DC distribution system containing multiple DC microgrids and proposes a coordinated control strategy for energy interaction at the microgrid, cluster, and main grid‐levels to address this problem. To begin, the interaction at the microgrid‐level employs a decentralized control strategy that only requires local voltage information and adjusts the operation modes of each unit within the microgrid based on the bus voltage information. Second, a new power equalization optimization control is added to the cluster‐level interaction based on the decentralized control strategy to achieve power equalization among microgrids with different line impedances. Furthermore, at the main grid‐level, the interaction uses one‐way communication of time‐of‐use (TOU) price to optimize system economy, ensuring that even if communication fails, the system's operation reliability is not compromised. Finally, simulation results demonstrate that the proposed three‐level energy interaction and switching meet the system's reliability requirements. Furthermore, the proposed coordinated control strategy reduces the system's reliance on communication while maintaining economic efficiency. © 2023 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.

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