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Abstract:
The large-scale integration of electric vehicles and distributed power sources will further exacerbate the peak valley load difference in power systems, which has posed a serious challenge to the stability and economic operation of the hybrid AC/DC distribution network. A hierarchical decentralized coordinated scheduling framework for the hybrid AC/DC distribution network coupled with the photovoltaic-storage-charging integrated stations considering multiple uncertainties is firstly proposed. In this framework, a multi-objective optimization model with the pursuit of the minimum day-ahead operation cost and peak valley difference of net load is presented for the distribution network, which is solved by the normalized normal constraint method. On the other hand, a two-stage robust optimization model considering a virtual battery model and source-load uncertainty set is established for the integrated station, which is solved by the column-and-constraint generation algorithm. Furthermore, an improved alternating direction method of multipliers is developed to solve the above decentralized optimization problem. Finally, the proposed model and solving method are validated via a modified 33-bus hybrid AC/DC distribution network coupled with 3 integrated stations. Simulation results demonstrate that the multi-objective scheduling strategy can achieve prominent effects of peak shaving and valley filling compared with the single-objective strategy. Specifically, the peak valley difference of net load has reduced by 70.1 %. Moreover, the coordination operation of various controllable devices can improve the operation flexibility of power systems and alleviate the influence of the multiple uncertainties. In addition, the solving time of the proposed method has shortened by 39.9 % compared with the traditional algorithm.
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JOURNAL OF ENERGY STORAGE
ISSN: 2352-152X
Year: 2025
Volume: 121
8 . 9 0 0
JCR@2023
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 1
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