RMS/EMT Simulation of Maesariang Microgrid System when Change Operation Mode
Keywords:
RMS, EMT, Simulation, Microgrid, Changing operation mode, Security, Stability, DigSILENT Power FactoryAbstract
This study cation demonstrates the performance of Maesariang Microgrid System (MMGS) during changing operation mode from grid connection to island in 2 cases and from island to grid connection in 2 cases. Stability Analysis (RMS) and Electromagnetic Transient (EMT) simulation by using DigSILENT Power Factory software is used to evaluate MMGS performance during switching the operation mode between grid connection mode and island mode that is the critical period of MMGS for controlling the network security, stability, reliability, and power quality of its service area. The behavior of active power generation from the PV system, the active and reactive power generation, voltage, and frequency from Battery Energy Storage System (BESS) at Maesariang substation in 50 s of the changing mode periods with and without communication time delay is studied for indicating MMGS performance in each simulation case. The simulation result presents that MMGS has impressive performance to manage all studied electrical parameter during changing mode from island to grid connection in all case and grid connection to island in the case that the spare generation power of BESS is higher than the lose incoming power and communication time delay has the unimportant effect to MMGS performance. In the contrary, MMGS performance during changing mode from grid connection to island in the case that the spare generation power of BESS is equal or lower than the lose incoming power is quite terrible and communication time delay are the precious factor to arbitrate the continuously operation or blackout in MMGS.
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