control link =⇒ nearly centralized performance 15 5 12 11 10 7 8 9 4 3 1 2 17 18 14 16 19 20 21 24 26 27 28 31 32 34 33 36 38 39 22 35 6 13 30 37 25 29 23 1 10 8 2 3 6 9 4 7 5 F Fig. 9. The New England test system [10], [11]. The system includes 10 synchronous generators and 39 buses. Most of the buses have constant active and reactive power loads. Coupled swing dynamics of 10 generators are studied in the case that a line-to-ground fault occurs at point F near bus 16. 0 -5 0 5 10 15 δ i / rad 0 -5 0 5 10 15 δ i / rad Fig. 10. Couple The fault duration by numerical inte !"#$%&'''%()(*%(+,-.,*%/012-3*%)0-4%5677*%899: 1 10 Ongoing work & next steps: cyber-physical security: corruption of wide-area signals data-driven & learning: what if we don’t have a model? 20 / 22