IBR and DER driven T&D Interactions in Dynamic Security Assessment

The power grid is evolving fast with increased penetration of renewables at all voltage levels of the power grid in the form of DERs and IBRs. The DERs and IBRs are leading to increased T&D interactions in the grid that are challenging the dynamic security assessment (DSA) of the grid. The panel session will address the role of increased T&D interactions in DSA and methods and tools used to capture these T&D interactions. T&D co-simulation is an effective method to capture the T&D interactions; similarly the tuned aggregated models are another way to capture the T&D interactions that are important for DSA. Utilizing these T&D interactions to improve the dynamic security of the system is also important and this can be achieved by controlling active distribution networks and the DERs and IBRs in the system. Short-term and long-term grid stability and the role of T&D interactions in them is key. Grid Following and Grid forming IBRs have varied impact on the T&D interactions and in turn have an impact on the gridís performance. The panel will cover the various methods of capturing T&D interactions for DSA and utilizing the T&D interactions to enhance the dynamic security of the system. Presentations in this panel session: - Role of T&D interactions in short-term and long-term grid performance through multi-timescale T&D co-simulation (23PESGM2824) - Impact of local loads on the stability of DERs and bulk grid connected IBR and its importance in dynamic security assessment (23PESGM2826) - Aggregation of active distribution networks to capture accurate T&D interactions under large disturbances (23PESGM2827) - Role of EMTP simulations to capture accurate T&D interactions driven by power electronic components (23PESGM2829)