Modeling of Inverter-Based Resources for Large System Stability Studies

Inverter control systems are highly proprietary in nature and typically are protected by vendors. As a result, carrying out transmission system planning studies can be cumbersome wherein the exact type of inverter control is unknown. Generic models can help play a role in this space, among other use cases. This tutorial will provide an overview of the state of the art of generic modeling of IBRs for grid studies both in strong and weak grids. Additionally, the tutorial will also cover the state of art in aggregate modeling of distributed energy resources (DERs) and load, whose representation is crucial for informed power system planning.