Inverter-based Resources Subsynchronous Oscillations: Events and Mechanism Analysis (Slides)

This webinar presents a survey of real-world subsynchronous oscillation events associated with inverter-based resources (IBR) over the past decade. The focus is on those oscillations in the subsynchronous frequency range known to be influenced by power grid characteristics, e.g., series compensation or low system strength. A brief overview of the historical events is presented followed by detailed descriptions of a series of events. This webinar also examines causation mechanisms and proposes future research directions to meet grid needs worldwide.