A centralized microgrid power management and control system is developed and tested with a Hardware-In-the-Loop (HIL) Real-Time Digital Simulator (RTDS) model of an existing microgrid that communicates in real-time with the controller over the Internet. The controller leverages Phasor Measurement Units (PMUs) for measuring power flow and adjusting inverter power references in real-time. The control objectives are power and State-of-Charge (SoC) control, subject to inverter power amplitude and rate limits and communication constraints. The controller incorporates units of power control, SoC control, and adaptive reference scheduling to achieve seamless microgrid operation. Real-time, over the internet, hardware-in-the-loop tests between the controller and the simulator are realized and indicate stability and performance of the microgrid control system.
Amir Valibeygi, Raymond de Callafon, Mark Stanovich, Michael Sloderbeck, Karl Schoder, James Langston, Isaac Leonard, Sourindu Chatterjee, Rick Meeker, In Proc. 2018 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT), 19-22 Feb. 2018
KEYWORDS: Microgrids, Inverters, Phasor measurement units, Load modeling, Real-time systems, Control systems, Batteries