Berlin 2018 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
DY: Fachverband Dynamik und Statistische Physik
DY 79: The Physics of Power-Grids – Fluctuations, Synchronization and Network Structures (joint session DY/SOE)
DY 79.4: Vortrag
Freitag, 16. März 2018, 10:45–11:00, EB 107
Load Dependence of Power Outage Statistics — •Soumyajyoti Biswas1 and Lucas Goehring1,2 — 1Max Planck Institute for Dynamics and Self-Organisation, Göttingen, Germany — 2Nottingham Trent University, Nottingham, UK
The size distributions of power outages are shown to depend on the stress, or the proximity of the load of an electrical grid to complete breakdown. Using the data for the US and Canada between 2002-2017, we show that the outage statistics are dependent on the usage levels during different parts of the day. At higher load, not only are more failures likely, but the distribution of failure sizes shifts, to favor larger events. At a finer spatial scale, different regions within the US can be shown to respond differently in terms of the outage statistics to variations in the usage (load). The response, in turn, corresponds to the respective bias towards larger or smaller failures in those regions. We provide a simple model, using realistic grid topologies, which can nonetheless demonstrate such biases as a function of the applied load, as in the data. Given sufficient data, the method can be used to identify vulnerable regions in power grids prior to major blackouts.