Comparative Analysis of Grid Forming Inverters based Power Systems in Phasor Domain and Electromagnetic Transient Domain

As the number of inverter-based resources (IBRs) increases and the number of synchronous generators decreases in the power systems, new challenges have emerged in terms of power system stability and reliability. To assess this stability, phasor-based time-domain simulation is one of the classic methods, however, with more IBRs; their fast dynamics can affect the system. Thus more detailed simulations, such as Electromagnetic Transients (EMT), may be required. In this paper, the phasor simulation will be compared to EMT simulations, in the case of a Grid Forming inverter based microgrid. A brief discussion of the simulation tools is provided and the results of the comparative analysis results are discussed.