Research on Dynamic Aggregation Model and Equivalent Method for Distributed Resources

Abstract

In order to realize the coordinated operation between distributed resources and the grid, the village can be equivalent to an energy supply system, to give full play to the flexibility of distributed resources and improve energy utilization. Establish a resource aggregation model based on the scenario where the energy supply and consumption system participate in grid regulation and control, this paper proposes a dynamic aggregation equivalence method. Firstly, cluster the power generation resources in the countryside, and conduct unified control of the scattered and single-point power generating units with small capacity; secondly, establish the day-ahead equivalent model of the multi-type energy supply and use the system formed by the cluster, construct an optimized model to obtain the power range and climbing range of the energy supply and use system, and obtain the cost curve of the energy supply and use system; then, according to the parameters of the day-ahead equivalent model, real-time operation information and prediction information of distributed generator set, the diurnal equivalent parameters of energy supply system are modified; finally, an example is given to verify the effectiveness of the proposed method.