Emergence of Scale-Free Blackout Sizes in Power Grids
Physical Review Letters , Volume 125 - Issue 5 p. 058301
We model power grids as graphs with heavy-tailed sinks, which represent demand from cities, and study cascading failures on such graphs. Our analysis links the scale-free nature of blackout sizes to the scale-free nature of city sizes, contrasting previous studies suggesting that this nature is governed by self-organized criticality. Our results are based on a new mathematical framework combining the physics of power flow with rare event analysis for heavy-tailed distributions, and are validated using various synthetic networks and the German transmission grid.
|Physical Review Letters|
|Organisation||Centrum Wiskunde & Informatica, Amsterdam (CWI), The Netherlands|
Nesti, T, Sloothaak, F, & Zwart, A.P. (2020). Emergence of Scale-Free Blackout Sizes in Power Grids. Physical Review Letters, 125(5). doi:10.1103/PhysRevLett.125.058301