考虑冬季供暖的风电—CSP电站联合参与现货市场运行策略

Joint Operation Strategy of CSP Plants with Wind Farms in the Spot Market Regarding Winter Heating

随着“双碳”目标的提出,以风电为代表的可再生能源参与电力现货市场已是大势所趋。但由于具有不确定性和波动性,风电在市场中常处于不利地位。风电与具有灵活调节能力的光热电站(Concentrated Solar Power,CSP)联合能够减少实时出力偏差,进而降低不平衡成本。基于此,本文针对风电—CSP电站联合参与现货市场的运行策略开展研究。首先,对风电—CSP电站联合参与现货市场的机理进行分析,在此基础上,以经济性最优为目标,综合考虑供电收益、冬季供暖收益和不平衡惩罚等因素,提出了考虑冬季供暖的风电—CSP电站联合参与电力现货市场运行策略,并基于Shapley值法对联盟收益进行分配,最后分析了储热容量对联盟收益的影响。算例表明所提联合运行策略能够充分利用CSP电站灵活性,显著提高双方收益,减少弃风损失。

In order to achieve carbon peaking and carbon neutrality goals,it is a general trend for renewable energy represented by wind power to participate in the power spot market.However,wind power is often at a disadvantage in the market due to its inherent variability and unpredictability.The coalition of wind farm and CSP(Concentrated Solar Power)power station can reduce real-time output deviations,which in turn reduces unbalanced costs.This paper focuses on offering a bidding strategy of coalition of wind farm and CSP power station in spot market.Firstly,we analyzed the mechanism of wind power-CSP power station joint participation in the spot market.On this basis,we proposed an optimization model which comprehensively considers electricity supply income,heating supply income and real-time balance cost.In addition,we proposed a profit-sharing mechanism based on cooperative game theory using Shapley value and we also analyzed the impact of heat storage capacity on the revenue of the coalition.The results of the case study shows that the proposed strategy can make full use of the flexibility of the CSP power station and significantly improve the profitability and reduce the loss of wind curtailment.