Large-Scale EMT Model Examples for High-Share IBR Systems: Using Large-Scale EMT Models for Operations and Planning Power Systems With a High Share of IBRs [Feature]

The use of electromagnetic-transient (EMT) models to study the behavior of power systems with high share of inverter-based resource (IBR) systems has become increasingly vital to ensure power system security over the last decade. Multiple system operators (SO) around the world have developed large scale EMT models to capture the interactions between the grid and IBR systems and between multiple IBR systems themselves. Four different SO, from Australia, Denmark, Finland, and Texas, USA, present learnings and examples of their methodologies for creating, maintaining and using large scale EMT models to ensure ongoing system security across their respective networks.