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DY: Fachverband Dynamik und Statistische Physik
DY 45: The Physics of Power grids (joint session DY/SOE)
DY 45.2: Vortrag
Donnerstag, 4. April 2019, 10:45–11:00, H6
Enhancing power grid synchronization and stability through time delayed feedback control — •Halgurd Taher1,2, Simona Olmi2,3, and Eckehard Schöll1 — 1Institut für Theoretische Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany — 2Inria Sophia Antipolis Méditerranée Research Centre, 2004 Route des Lucioles, 06902 Valbonne, France — 3CNR - Consiglio Nazionale delle Ricerche - Istituto dei Sistemi Complessi, 50019, Sesto Fiorentino, Italy
The increasing inclusion of renewable energy sources into the power grid brings new challenges for its stable operation, due to the presence of various forms of perturbations which may possibly harm stability and synchronization. In this talk asynchrony of single nodes in power grids is investigated using real data of the sparsely connected German high-voltage transmission grid. Based on time-delayed feedback control, diffferent control strategies are proposed and compared. The strategies not only take into account solitary states, but also the Lyapunov vector corresponding to the largest (positive) Lyapunov exponent. Starting from an unstable state out of synchrony, we are able to frequency-synchronize and stabilize power grids by just controlling a small set of nodes. The numerical calculation of the Lyapunov spectrum allows us to explore the mechanism behind the control-induced resynchronization transition.