Dresden 2017 – scientific programme
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DY: Fachverband Dynamik und Statistische Physik
DY 38: The Physics of Power-Grids – Fluctuations, Synchronization and Network Structures (Focus session, joint DY/SOE)
DY 38.9: Talk
Wednesday, March 22, 2017, 17:45–18:00, ZEU 160
Collective Network Dynamics of Electric Power Grids — Xiaozhu Zhang1,2, Dirk Witthaut3, and •Marc Timme1,2 — 1Network Dynamics, Max Planck Institute for Dynamics and Self-Organization and Technical University of Darmstadt — 2http://networkdynamics.info — 3FZ Julich
Networks dominate our daily life -- and most of them are dynamic. For instance, almost all of the infrastructure we use today, from simple lights to hospital treatment, from communication to transport systems, crucially depend on electric energy reliably supplied via power grids. The ongoing integration of renewable energy sources, being smaller, more heterogeneous, decentralized and more fluctuating, implies more strongly networked systems with more distributed operation states. In our research group we aim to understand fundamental principles underlying the collective nonlinear dynamics of networked systems in general. This talk highlights recent developments and provide two examples of collective phenomena in decentrally organized power grids. First, we offer a theory of non-local rerouting of electricity upon line failure, providing an accurate prediction of flow redistribution that goes beyond local predictors. Second, we analyze patterns of dynamic responses to distributed fluctations across time scales and demonstrate under which conditions the notion of a "variation in the grid frequency" breaks down.
This is work with various other colleagues. see also: Phys. Rev. Lett. 109:064101 (2012); Phys. Rev. Lett. 116:138701 (2016); New J. Phys. 14:083036 (2012); Nature Comm. 7:11061 (2016).