Abstract
The growth of inverter-based resources (IBRs) in modern power systems can challenge system stability since they do not natively provide inertia, prompting a need to develop new methods to address the potential instabilities. In this paper, a dynamically configurable grid-forming (GFM) and grid-following (GFL) control is proposed, which enables inverters to flexibly transition to support system needs. The operation mode transition between GFM and GFL controls is adopted as an additional degree of control flexibility to adjust the small-signal stability margin. In addition, a holistic and detailed small-signal model for a distribution feeder that captures the dynamics from both synchronous generators (SGs) and IBRs is also derived and used to evaluate the effectiveness of the proposed GFM/GFL controls to augment the system small-signal stability margin. Case studies with varying levels of IBRs were implemented in MATLAB/Simulink to demonstrate the effectiveness of the proposed approach.
| Original language | American English |
|---|---|
| Number of pages | 10 |
| State | Published - 2022 |
| Event | IEEE Energy Conversion Congress and Exposition - Detroit, Michigan Duration: 9 Oct 2022 → 13 Oct 2022 |
Conference
| Conference | IEEE Energy Conversion Congress and Exposition |
|---|---|
| City | Detroit, Michigan |
| Period | 9/10/22 → 13/10/22 |
Bibliographical note
See NREL/CP-6A40-85108 for paper as published in proceedingsNREL Publication Number
- NREL/CP-6A40-83340
Keywords
- grid-following control
- grid-forming control
- operation mode transition
- small-signal stability analysis