A Projection-Based Approach for Distributed Energy Resources Aggregation

TL;DR

This paper presents a novel projection-based multi-slot aggregation model for distributed energy resources that considers network, operational, and economic constraints, enhancing efficiency and data privacy in smart grids.

Contribution

It introduces a feasible region projection approach combined with an extended PVE algorithm for high-dimensional DER aggregation considering multiple constraints.

Findings

The model effectively protects DER data information.

The two-step economic dispatch matches centralized results.

Simulation on IEEE 39-bus network verifies model effectiveness.

Abstract

Aggregating distributed energy resources (DERs) is of great significance to improve the overall operational efficiency of smart grid. The aggregation model needs to consider various factors such as network constraints, operational constraints, and economic characteristics of the DERs. This paper constructs a multi-slot DER aggregation model that considers the above factors using feasible region projection approach, which achieved the protection of DERs data information and the elimination of internal variables. A system economic dispatch (ED) model is established for the operators to make full use of the DER clusters. We calculate the feasible regions with temporal coupling by extending the Progressive Vertex Enumeration (PVE) algorithm to high dimension by the Quickhull algorithm. Finally, an IEEE 39-bus distribution network is simulated with DERs to verify the effectiveness of the proposed model. Results show that the two-step ED derives the same results as the centralized ED.