A Portrait-Based Method for Constructing Multi-Time Scale Demand Response Resource Pools

Demand response (DR) resources play a crucial role in enhancing the power system's flexibility and maintaining the real-time balance between supply and demand side. In order to unlock the potential of underutilized DR resources and achieve a “real-time, rapid, and accurate” regulation effect, it is imperative to study and construct DR resource pools. This paper introduces a multi-time scale DR resource pool construction method based on resource portrait, which takes into account the multi-time scale characteristics of DR resources. First, we categorize the basic indicators that characterize the load regulation capability. Then, the DR resource portrait tags are obtained under the day-ahead, intra-day, and real-time time scales. Finally, using the hierarchical weight decision-making analysis method, we calculate the comprehensive index of load regulation capability for a reliable evaluation of resource response capability. The load aggregator (LA) conducts orderly scheduling of resources in the pool and accurately responds to the system scheduling requirements based on the resource pool call process. The proposed resource pool construction method has been verified from two aspects of response deviation rate and scheduling cost, and its technical and economic advantages have been proven.