Research on Coalitional Strategy and Mechanism of Demand-Side Entities by Virtual Power Plant

doi:10.12204/j.issn.1000-7229.2020.09.001

Abstract

Abstract:

As the subsidies of distributed resources decrease, to bid in day-ahead market by forming virtual power plant becomes a new income channel for demand-side entities. This paper designs a complete transaction mechanism from three parts to realize this mode such as bidding strategy, profit distribution and the formation of virtual power plant competing by demand-side entities. The bidding strategy model of price-maker virtual power plant is proposed, and the uncertainty is modeled on the basis of interval optimization. In addition, a generation quantity and uncertainty contribution based allocation mechanism is designed to distribute the profit. Then, this paper analyzes the stability of each coalition status to study the formation of virtual power plant. Finally, an example is given to verify the effectiveness of the proposed method. The results show that the proposed transaction mechanism conforms to the characteristics of the user-side stakeholders, and its allocation mechanism takes into account the stabilizing effect of participants on uncertainty, which can provide auxiliary decision-making for the user side stakeholders.

Key words: demand-side entities, virtual power plant, price maker, coalition game

CLC Number:

TM712

HU Jiakai, JIANG Chuanwen, LI Lei. Research on Coalitional Strategy and Mechanism of Demand-Side Entities by Virtual Power Plant[J]. ELECTRIC POWER CONSTRUCTION, 2020, 41(9): 1-9.

Figures/Tables 9

Fig.1 Market structure of generation-side and demand-side with virtual power plant

Fig.2 The process of the trading mechanism among the demand-side entities by game

Fig.3 Diagram of the power system topology

Table 1 The bidding strategy of VPP and day-ahead market clearing

Table 2 The profit of VPP under various coalition statuses

Table 3 The income of the demand-side entities under various coalition statuses

Table 4 The effective relationship among the coalition statuses

Table 5 The preference relationship of demand-side entities among the coalition statuses

Fig.4 The direct dominant relationships among the coalition statuses

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