DSA for IBR penetrated power systems: challenges and mitigation measures

More and more inverter-based resources (IBRs) such as wind and solar generation, are integrated into power grids. IBRs pose many operation challenges including intermittence and low inertia resulting in large frequency variations, and low fault currents causing protection malfunction. In addition, unprecedent dynamic phenomena were observed in the real-world, e.g., large-scale solar PV tripping in California after transmission outage, low-frequency oscillations observed in both Texas and Australia after transmission outages due to IBRs with weak grid interconnections, to name a few. Accurate and computationally efficient dynamic stability assessment (DSA) for IBR-dominated power systems is an urgent need, and IBRs being “black-boxes” to grid operators seems to be the biggest hurdle. This panel session brings a group of government leaders, industry experts, inverter manufacturers, and academia researchers together to discuss the challenges for DSA, propose mitigation strategies, and reshape DSA for the changing grid. Specifically, industry experts will describe success stories, along with limitations of the current DSA practices, and the desired outcomes of DSA. New DSA strategies and tools to address those challenges, e.g., dynamic assessment relying on black-box models, model validation using measurement data, will be explored.