Journal
2021 IEEE POWER & ENERGY SOCIETY INNOVATIVE SMART GRID TECHNOLOGIES CONFERENCE (ISGT)
Volume -, Issue -, Pages -Publisher
IEEE
DOI: 10.1109/ISGT49243.2021.9372242
Keywords
feeder; gi id-lw wing; inverter; microgt; simulafion; stability
Categories
Funding
- U.S. Department of Energy [DE-AC05-76RL01830]
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Comparative study was conducted to examine the stability of grid-forming inverter-based microgrids using different simulation methods, revealing that phasor-based simulation provides consistent results with EMT simulation under normal controller parameter ranges, but may yield overly optimistic stability results under extremely high droop gains.
The increasing interest in studs tog inverter-based mica ogrids requites appiwpriate simulation methods that can effectively simulate the dynamics of distribution feeders that typically have thousands of nodes. To examine the accuracy of phasor-based simulation for the stability of mid-forming invertessbased microgrids, a comparatisT study between electromagnetic transient (EMT) and phasor-based simulation was conducted. Case studies of a two-inverter small microgrid and a modified version of the IEEE 34-Node Test System that has seven grid-forining inverters show that phasor based simulation agrees well with EMT simulation when the P di 0013 gains of mid-forming inverter controllers are within normal ranges. However, under extremely high 1-k-f droop gains, phasorvbased simulation can result in over-optimistic stability results. This study provides insight into the applicability of phasor-based simulation for the stability of grid-forming-inverteta-based microgrids,
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