Optimized Control Method for Flexible Energy Storage in Active Distribution Networks Oriented to Edge-Terminal Coordination

doi:10.3969/j.issn.1008-0198.2025.05.002

Abstract

Abstract: Aiming at the problems commonly existing in distribution networks with high-proportion new energy integration, such as low voltage, over-voltage, unbalanced voltage, line overload and excessive line loss, a flexible energy storage optimized control method for active distribution networks oriented to edge-terminal coordination is proposed. Firstly, based on the terminal-edge-cloud concept technology of the distribution internet of things, a coordinated operation architecture of the terminal equipment layer and the edge computing service layer relying on communication services is constructed, and the scheduling information interaction mechanism between the multi-source devices at the distribution network terminal and the intelligent integrated terminal platform is clarified. Secondly, considering that battery energy storage can adaptively adjust the battery grid-connected capacity according to the grid demand, a mathematical model of modular series battery energy storage is established. On this basis, taking into account the charging and discharging costs, operation and maintenance costs and voltage regulation costs of battery energy storage, a coordinated optimized control method for active and reactive power of flexible energy storage in active distribution networks is proposed. Finally, case studies on the IEEE 33-node system verify the effectiveness of the proposed method in enhancing the operational economy and voltage quality of distribution networks.

Key words: active distribution network, flexible energy storage, edge-terminal coordination, voltage quality, optimized control

CLC Number:

TM731

HU Jinhao, ZHU Guangming, WAN Dai. Optimized Control Method for Flexible Energy Storage in Active Distribution Networks Oriented to Edge-Terminal Coordination[J]. Hunan Electric Power, 2025, 45(5): 8-16.

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