G-PST/ESIG Webinar: IBR driven Sub synchronous Oscillations

Featured Speaker: Balarko Chaudhuri, Reader in Power Systems, Imperial College London About the Webinar: Increasing shares of inverter-based resources (IBRs) present unprecedented grid stability challenges. One particular concern is sub-synchronous oscillation (SSO) caused by multiple IBRs interacting across the power grid especially, under high IBR scenarios. The opaqueness of IBR controls and lack of an established framework for analyzing SSO makes it difficult for the system operators to foresee SSO as exemplified by recent SSO events such as poorly damped 8 Hz oscillations in Scotland. System operators often respond by limiting the fraction of IBRs i.e., by constraining off renewables in an overly conservative way. This webinar will focus on the IBR-driven SSO problem, analysis and mitigation based on our ongoing research with the National Energy System Operator (NESO) in Great Britain and as part of the Global Centre on ‘Electric Power Innovation for a Carbon-free Society (EPICS)’.