Distributed Cooperative Clearing Model of Peak Regulation Ancillary Service Market Under Ubiquitous Power Internet of Things

Abstract

As distributed energy resources (DERs) rapidly integrate into current power systems, new methods to effectively manage them need to be developed. Toward this end, a large number of geographically dispersed DERs are generally aggregated into a virtual power plant (VPP). Aiming at the problem of peak regulation mechanism integrating the traditional thermal power units and newly VPPs, the two-layer market clearing model for peak regulation ancillary service is proposed under the ubiquitous power internet of things in a cooperative scheme. According to the capacity of available peak regulation and the limitations, which is more in line with the actual peak regulation characteristics of thermal power units and VPPs, the upper-level clearing model is presented. Also, in order to avoid unfair power dispatching among DERs in VPP, the lower-level clearing model is designed in a distributed method, which regulates the VPP at a specific dispatched clearing command from the upper-level model while maintaining the utilization ratios of DERs at a consensus. The effectiveness of the proposed model is illustrated through simulations on the IEEE 123-bus test system.