Abstract
Inverter-based resources (IBRs) are gradually replacing conventional fossil energy in modern power systems, which could make the system susceptible due to insufficient inertia, especially when moving towards a 100% inverter-based power grid. Grid-forming (GFM) and grid-following (GFL) controls are two common inverter control algorithms. However, the corresponding stability issues along with a comparative study on low-inertia power systems should still be investigated. This paper focuses on small-signal stability and conducts a comprehensive analysis of GFM and GFL controls, with emphases on the interactions between synchronous generators and IBRs. The detailed modeling of GFM and GFL inverters, and synchronous generators (SGs) are established. The coupling mechanism of IBRs and SGs is then conducted through participation factor analysis. The impacts of critical parameters on system stability are finally identified. The theoretical analyses are validated through time-domain simulation in MATLAB/Simulink.
| Original language | American English |
|---|---|
| Number of pages | 9 |
| State | Published - 2022 |
| Event | 47th Annual Conference of the IEEE Industrial Electronics Society (IECON) - Duration: 13 Oct 2021 → 16 Oct 2021 |
Conference
| Conference | 47th Annual Conference of the IEEE Industrial Electronics Society (IECON) |
|---|---|
| Period | 13/10/21 → 16/10/21 |
NREL Publication Number
- NREL/CP-5C00-80335
Keywords
- grid-following
- grid-forming
- modal analysis
- participation factor
- small-signal stability
- synchronous generator