Research on Value Evaluation Model of Mid-and-Long-Term Contract Curve Adapting to Power System with High New Energy Penetration

Electricity contract curve shapes and prices would affect stakeholders’ profits. However, as past contracts are traded merely in quantity, there lacks an evaluation method for curve contracts at the current market stage. This research establishes a mid-and-long-term contract curve pricing system that reflects electric energy value, green value, and regulation value for each period. The homologous pricing evaluation model can measure the contributions of power plants of various types, and corresponding results could serve as the basis for formulating contract guidance prices for certain curve shapes. This article takes the Ningxia region as an example to verify the scientific nature and effectiveness of the model in an area with high new energy penetration. Results show that the model can promote the distribution of contract values, guarantee the effective linkage between the mid-and-long-term market trading and spot market trading, and provide a reference for the design of power trading supporting mechanisms.