${\mathcal{H}}_2$-norm transmission switching to improve synchronism of low-inertia power grids

Abstract

This paper investigates the utilization of transmission switching to improve synchronization performance of low-inertia grids. The synchronization performance of power girds is first measured by the ${\mathcal{H}}_2$ norm of linearized power systems. Laplacian-based bounds and a close-form formulation of the ${\mathcal{H}}_2$-norm synchronization performance metric are derived to reveal the influence of network structure on synchronization performance. Furthermore, a transmission switching approach is developed by analyzing the sensitivity of the ${\mathcal{H}}_2$-norm metric to perturbation of network susceptance. Effectiveness of the proposed approach to improve synchronization performance is demonstrated using the SciGRID network for Germany.

Submitted to 21st IFAC World Congress

References in corpus (1)

• Spectrum of Laplacians for Graphs with Self-Loops