Fig. 2From: Engineering structural robustness in power grid networks susceptible to community desynchronizationNPCC System Map. The NPCC 140-Bus system is a reduced model for the power grid of the northeastern United States and Canada, plotted here overlaid on a map of the region. In this figure only, bus types are distinguished by the nodes’ symbols (circles are load buses, squares are generator buses, and triangles are swing buses)Back to article page