Modeling and Analysis of Large Power Systems with Increased Inverter Based Resources

Event Description:

The increasing penetration of inverter-based resources (IBRs) such as solar, wind, and battery energy storage is fundamentally changing power system dynamics and challenging traditional modeling and stability assessment approaches. As synchronous generation is displaced, control interactions, grid strength sensitivity, and operating-point dependence become dominant stability drivers. This seminar provides an overview of modeling and stability analysis methods for power systems with high IBR penetration. It covers grid-following and grid-forming inverter models across RMS and EMT domains and introduces frequency-domain techniques for assessing small-signal and control-interaction stability. Practical issues such as model aggregation, uncertainty, and stability-driven operating limits are discussed, with emphasis on application to interconnection studies and planning workflows for inverter-dominated grids.