H₂-norm transmission switching to improve synchronism of low-inertia power grids

2020/01/03 by Han, Tong, Hill, David J.
#FOS: Electrical engineering #Systems and Control (eess.SY) #electronic engineering #information engineering

paper · doi:10.48550/arxiv.2001.00787

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 H₂ norm of linearized power systems. Laplacian-based bounds and a close-form formulation of the H₂-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 H₂-norm metric to perturbation of network susceptance. Effectiveness of the proposed approach to improve synchronization performance is demonstrated using the SciGRID network for Germany.

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