Dresden 2020 – wissenschaftliches Programm

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SOE: Fachverband Physik sozio-ökonomischer Systeme

SOE 4: Physics of Power Grids (joint session DY/SOE)

SOE 4.4: Vortrag

Montag, 16. März 2020, 12:15–12:30, ZEU 147

Enhancing power grid synchronization and stability through time delayed feedback controlHalgurd Taher1, •Simona Olmi1, and Eckehard Schöll21Inria Sophia Antipolis Mediterranee Research Centre, 2004 Route des Lucioles, 06902 Valbonne, France — 2Institut fuer Theoretische Physik, Technische Universitaet Berlin, Hardenbergstraße 36, 10623 Berlin, Germany

We study the synchronization and stability of power grids within the Kuramoto phase oscillator model with inertia with a bimodal natural frequency distribution representing the generators and the loads. We identify critical nodes through solitary frequency deviations and Lyapunov vectors corresponding to unstable Lyapunov exponents. To cure dangerous deviations from synchronization we propose time-delayed feedback control, which is an efficient control concept in nonlinear dynamic systems. Different control strategies are tested and compared with respect to the minimum number of controlled nodes required to achieve synchronization and Lyapunov stability. As a proof of principle, this fast-acting control method is demonstrated for different networks (the German and the Italian power transmission grid), operating points, configurations, and models.

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