Optimal bidding strategy and profit allocation method for shared energy storage-assisted VPP in joint energy and regulation markets

Tianhan Zhang, Weiqiang Qiu, Zhi Zhang, Zhenzhi Lin, Yi Ding, Yiting Wang, Lianfang Wang and Li Yang

Applied Energy, 2023, vol. 329, issue C, No S0306261922014155

Abstract: Renewable energy sources (RES) generating units such as wind power and photovoltaic (PV) units can be aggregated with controllable loads as virtual power plants (VPPs) to jointly participate in energy and regulation markets for extra market revenue. However, the uncertainty of RES limits the market performance of the VPP, which can be solved by energy storage. Due to the flexibility of the energy storage sharing mode, a two-part price-based leasing mechanism of shared energy storage (SES) considering market prices and battery degradation is proposed to provide the short-term use rights of energy storage for the VPP in a new pattern. Then, an SES-assisted real-time output cooperation scheme for the VPP in joint energy and regulation markets is designed to improve the VPP market performance and a joint optimal market bidding model of the VPP with the assistance of the SES is developed to maximize the expected daily profit. Moreover, a profit allocation approach for the SES-assisted VPP based on the improved Shapley value method and the minimizing deviation algorithm (ISV-MDA) is proposed to reflect the real contributions and balance the interests of its participants. Simulations based on data from PJM and NREL Dataset illustrate that RES can significantly improve their profits by participating in the VPP to jointly lease the use rights of SES and participate in joint energy and regulation markets through the cooperation and bidding strategies. In addition, the proposed profit allocation method is more reasonable and more targeted for allocating the cooperation profit than the cooperative game-based methods.

Keywords: Virtual power plant (VPP); Shared energy storage (SES); Output cooperation scheme; Bidding model; Improved Shapley value method; Frequency regulation (search for similar items in EconPapers)
Date: 2023
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Citations: View citations in EconPapers (28)

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DOI: 10.1016/j.apenergy.2022.120158

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