Pricing for shared energy storage strategy on the demand side of power grid based on Nash equilibrium theory

doi:10.3969/j.issn.2097-0706.2023.11.007

Abstract

Abstract:

With the advancement of the construction of new power systems， small energy storage devices on the user side have become increasingly important. However， their disorder charging and discharging behaviors not only pose safety hazards to the power grid， but also cause resource waste. Based on this， a joint scheduling mode for small energy storage devices on the user side is proposes，which are integrated on an energy storage aggregator cloud service platform. The optimal operation models for energy storage operators， energy storage device investors， and the power grid are established. Based on Nash equilibrium theory， a cooperative game model for all participating entities under their constraints is established. In a numerical simulation analysis，the optimal pricing scheme for shared energy storage devices is obtained by model solving. The results indicate that the optimal pricing scheme can not only achieve the goals of peak load regulation and resources saving， but also lead to a win-win situation among the three participating entities. The feasibility and scientificity of the proposed pricing mechanism have been proven.

Key words: new power system, user-side small energy storage device, shared energy storage, energy storage aggregator, joint scheduling, dual carbon target, peak load shifting, Nash equilibrium, demand side management

CLC Number:

TK01

CUI Jindong, ZHU Zengchen, LI Ruotong. Pricing for shared energy storage strategy on the demand side of power grid based on Nash equilibrium theory[J]. Integrated Intelligent Energy, 2023, 45(11): 55-61.

Figures/Tables 9

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参数	数值
额定容量/kW	265.0
充电电压/V	420
充电电流/A	300
充电机功率/kW	126.0
输出功率/kW	58.2

类别	时段	电价
峰时	09:00—12:00, 14:00—18:00, 20:00—22:00	1.308
平时	07:00—09:00, 12:00—14:00, 18:00—20:00, 22:00—24:00	0.872
谷时	0:00—07:00	0.436

方案	峰时电价	平时电价	谷时电价
1	1.279	0.859	0.423
2	1.235	0.843	0.418
3	1.174	0.826	0.401

项目	利润
项目	储能聚合商	储能装置投资者	供电公司
合作前	0	0	14.57
合作后	3.78	5.44	16.63