Towards grid-aware multi-period flexibility aggregation — a constrained zonotope approach

Aggregation schemes provide a means to reduce the computational complexity of power system operation by reducing the number of devices that are considered individually. This can be achieved with tools of computational geometry, where the feasible set is projected onto the decision variables of the point of interconnection. Set projection is computationally expensive, especially in the context of multi-period power system operation. This calls for efficiency improvements via structure exploitation of set representations. This paper proposes efficient flexibility aggregation via constrained zonotopes. We evaluate the performance of the proposed method on a 15-bus distribution grid with time-dependent elements for up to 96 timesteps. The results suggest that the presented method significantly improves computation times compared to classic polytope projection approaches.

Subjects

Feasible operation region

Flexibility aggregation

Hierarchical optimization

TSO-DSO coordination

DDC Class

621.38: Electronics, Communications Engineering

681: Precision Instruments and Other Devices

Lizenz

https://creativecommons.org/licenses/by/4.0/

Publication version

publishedVersion

Name

1-s2.0-S0378779626010461-main.pdf

Type

Main Article

Size

8.46 MB

Format

Adobe PDF

Options

Towards grid-aware multi-period flexibility aggregation — a constrained zonotope approach