A network-based structure-preserving dynamical model for the study of cascading failures in power grids

In this work we show that simple classic models of power grids, albeit frequently utilized in many applications, may not be reliable for investigating cascading failures problems. For purpose, develop a novel model, based on structure-preserving approach, to obtain network-based description grid, where nodes correspond generators and buses, while the links physical lines connecting them. addition, also consider voltage frequency protection mechanisms buses. Considering Italian grid as case study interest, then investigate propagation an initial failure any line system, compare predicted impact according different assumptions model such presence or absence simplified system dynamics. particular, it can observed more realistic are crucial determine size failure, well sequence involved cascade.