Research on Optimal Operation of Shared Energy-Storage Power Station Applying Nash Negotiation

doi:10.12204/j.issn.1000-7229.2022.02.001

Abstract

Abstract:

The consumption of renewable energy promotes the development of energy storage technology. Shared energy storage has attracted extensive attention because of its decentralized characteristics. In the optimal scheduling of shared energy storage, there is a problem of benefit distribution among multiple subjects. Therefore, this paper proposes an operation optimization method for shared energy-storage power station applying Nash negotiation theory. In this paper, the joint model of shared energy-storage power station and industrial users is constructed, and the cooperative operation model of various operators is established according to Nash negotiation theory. According to the mean inequality, the non-convex nonlinear problem is equivalent to two sub-problems: system revenue maximization and power transaction payment negotiation, which are solved by alternating direction method of multipliers (ADMM). Through the comparative analysis before and after the cooperative negotiation, it is concluded that the optimization method used in this paper can effectively improve the benefits of each subject and promote the consumption of new energy.

Key words: shared energy-storage power station, Nash negotiations, operation optimization, alternating direction method of multiplier(ADMM)

CLC Number:

TM73

HUANG Cheng, LIU Haitao, MA Bingtai, LU Heng. Research on Optimal Operation of Shared Energy-Storage Power Station Applying Nash Negotiation[J]. ELECTRIC POWER CONSTRUCTION, 2022, 43(2): 1-9.

Figures/Tables 14

Fig.1 Virtual schematic diagram of shared energy-storage power station

Fig.2 Flow chart of ADMM algorithm solving

Fig.3 Curves of user electric load and photovoltaic output

Table 1 Electricity price

Fig.4 Interactive electricity between shared energy-storage power station and users

Fig.5 Electricity transaction results of user 1

Fig.6 Electricity transaction results of user 2

Fig.7 Electricity transaction results of user 3

Fig.8 Charging/discharging power and electricity state of shared energy-storage power station

Fig.9 Electricity transaction price

Table 2 Comparison of operation income before and after cooperation of shared energy-storage power station元

Table 3 Comparison of operation cost before and after user 1 cooperation元

Table 4 Comparison of operation cost before and after user 2 cooperation元

Table 5 Comparison of operation cost before and after user 3 cooperation 元

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