Operation and Control of the Crown Hall Nanogrid Communication Infrastructure of the Crown Hall Nanogrid The Crown Hall Nanogrid, demonstrated as an islandable entity, possesses its own specific frequency and voltage requirements, and thus efficient and reliable communication is indispensable to its operation. Figure 13 presents the communication infrastructure embedded in the Crown Hall nanogrid, whose controller, serving as the nanogrid communication hub, communicates with the nanogrid field devices via Figure 23. A one-line diagram of the IIT microgrid SCADA system, based on PI OSIsoft Coresight. Figure 24. The renewable energy sites and nanogrids at the IIT. IEEE Elec trific ation Magazine / D EC EM BE R 2 0 2 0 31