Coordinated Scheduling of Frequency Regulation Resources Based on the Coordination Coefficient

With the development of renewable energy, the proportion of electricity generation capacity from conventional power generation units is steadily decreasing, resulting in insufficient frequency regulation resources which are usually provided by conventional power units. Therefore, there is a growing need for coordinating multiple types of frequency regulation resources to fulfill the frequency regulation tasks. However, the reliability of load side frequency regulation resources is limited, so it is necessary to coordinate the proportion of load side resources and traditional resources. Firstly, the concept of coordination coefficients is proposed in this paper, which is used to limit the proportion of resources on load side to the whole frequency regulation resources. Secondly, a two-layer optimization model of day-ahead market clearing based on coordination coefficients is established. The upper layer takes the balance of resource unit income between the generation side and the load side as the optimization objective, and the lower layer takes the lowest market clearing cost as the optimization objective, to optimize the coordination coefficients of long-term operation income balance. Finally, through the simulation of the IEEE system example in Matlab, it is verified that when the coordination coefficient is 0.13, the resource of the generation side and load side can achieve the unit income balance while ensuring the minimum cost of resource scheduling.