IEC 61850 Communication Assisted Synchronization Strategy for Microgrids

In this paper, out of phase re-closing of islanded microgrid with utility grid is considered. Active synchronization of microgrid with the help of synchrophasors through Phasor Measurement Units (PMUs) is considered. Synchronization is achieved by satisfying the microgrid reconnection requirements specified by IEEE 1547 std. The voltages and phase angles are measured by IEC 61850-90-5 PMUs. The 61850-90-5 PMU, MGCC and DER controller communication are modeled according to IEC 61850 and implemented with UDP/IP. The phase angle differences at PCC, if any before synchronization, are eliminated by MGCC. MGCC coordinates the DERs, as per constraints, to produce the required active power in microgrid to eliminate the phase angle difference. The synchronization process is demonstrated through simulations.