Research on reserve auxiliary service clearance models based on elastic price curves

Abstract

When there is a large forecast error or a sudden change in the power system load, there will be a significant power generation gap, which needs to be supported by reserve auxiliary services to ensure power balance. Meanwhile, with the gradual increase of renewable energy penetration rate, reserve auxiliary services can also be used to cope with the variability and intermittency of renewable generation. Therefore, the significance of reserve auxiliary services for the security and stability of the grid operation is increasingly prominent. For reserve ancillary services, this study aims to propose three clearance models based on the elastic price curves, compare their clearance mechanisms, and analyze their advantages and disadvantages by using an example simulation with Matlab. Simultaneously, applicability analysis is conducted to assess the applicability of these models to different power market development scenarios. The results of this study contribute to the understanding of the clearance mechanisms of reserve auxiliary services and provide a reference for the construction and decision-making of power markets.