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Date of Publication:2022-10-10

Journal:Dianwang Jishu/Power System Technology

Volume:45

Issue:9

Page Number:3379-3388

ISSN No.:1000-3673

Abstract:The combined bidding strategy of the power generation stakeholders can promote renewable energy to participate in the spot market by alleviating the penalty of the bidding deviation caused by the uncertainty of renewable energy output. However, faced with the uncertainty of renewable energy output and spot market prices, the risk propensities of power generation stakeholders will directly affect the implementation of the combined bidding strategy. In this paper, a combined bidding strategy for a wind farm and a combined heat and power unit with heat storage is established considering the uncertainties of both wind power output and clearing prices in the day ahead spot market. The uncertain variables are described by the information gap decision theory and the robust model and the opportunity model are used to reflect different risk propensities of the power generation stakeholders. The revenue sensitivity analysis of different combined bidding modes is studied to reflect the feasibility and the advantages of the combined bidding strategy, providing the strategic reference for the power stakeholders to select their combined bidding partners. The Shapley value method is utilized for the revenue allocation. The results of the case study show that the combined bidding strategy has its feasibility and strategy advantages when the generation stakeholders are both robust or opportunistic. Under other combined bidding modes, the feasibility of the strategy must be analyzed according to the specific scenario. © 2021, Power System Technology Press. All right reserved.

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