DUAL-LAYER OPTIMIZATION CONFIGURATION OF SHARED ENERGY STORAGE SYSTEM CONSIDERING UNCERTAINTY OF CHARGING TIME SEQUENCE OF ELECTRIC VEHICLES

Deng Tianxiang; Dou Yinke; Gao Liang; Zhao Yuning; Hao Wenhui

doi:10.19912/j.0254-0096.tynxb.2024-1360

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (12) : 52-59. DOI: 10.19912/j.0254-0096.tynxb.2024-1360

DUAL-LAYER OPTIMIZATION CONFIGURATION OF SHARED ENERGY STORAGE SYSTEM CONSIDERING UNCERTAINTY OF CHARGING TIME SEQUENCE OF ELECTRIC VEHICLES

Deng Tianxiang^1,2, Dou Yinke^1,2, Gao Liang³, Zhao Yuning^1,2, Hao Wenhui^1,2

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Abstract

Shared energy storage is a new type of energy storage business model, which can freely and flexibly choose energy storage capacity according to different scenarios. In this paper, based on shared energy storage power station, considering the uncertainty of electric rehicles（EV） charging timing, a two-layer optimization model of capacity optimization configuration and system optimization operation of energy storage power station is established. Firstly, a prediction of the spatiotemporal distribution of EV charging is proposed and its power is calculated, and then a two-layer optimization model is established considering the optimal configuration of operation and capacity. The two-layer optimization model is transformed into a single-layer nonlinear optimization problem by using Karush-Kuhn-Tucher（KKT） condition, and finally the nonlinear problem is transformed into a linear problem by using large M method. The calculation examples show that, considering the charging load of electric vehicles, the shared energy storage mode can take advantage of the complementarity of different micro-grids, reduce the system operation cost, improve the profitability of shared energy storage power stations, and achieve a win-win situation between users and power stations.

Key words

electric vehicles / microgrids / electric loads / shared energy storage / dual-layer optimization / electric vehicle charging timing uncertainty

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Deng Tianxiang, Dou Yinke, Gao Liang, Zhao Yuning, Hao Wenhui. DUAL-LAYER OPTIMIZATION CONFIGURATION OF SHARED ENERGY STORAGE SYSTEM CONSIDERING UNCERTAINTY OF CHARGING TIME SEQUENCE OF ELECTRIC VEHICLES[J]. Acta Energiae Solaris Sinica. 2025, 46(12): 52-59 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1360

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