Real-Time Microgrid Synchronization using Phasor Measurement Units

Microgrids are localized group of electric power generating resources and loads employed for increasing grid resiliency and reliability during emergency and severe weather conditions. The microgrids can operate in grid connected as well as islanded mode. Once islanded, the microgrid needs resynchronization for connecting back to the utility grid for operating in grid-connected mode. This resynchronization process of microgrid is carried out by synchrophasors through Phasor Measurement Units (PMU) in this paper. The resynchronization conditions are as per the IEEE 1547 Std. Although resynchronization of microgrid using PMU has been explored, but the demonstration of resynchronization process in real time has not been reported yet. Thus, in this paper, real time simulation of the microgrid is carried out in a Real Time Digital Simulator (RTDS) environment and resynchronization is achieved by PMU. The real time demonstration of the proposed approach helps in validating the technique and developing industry ready technique that can be deployed in real time.