Techniques and Methods for Validation of Inverter-Based Resource Unit and Plant Simulation Models Across Multiple Simulation Domains: An Engineering Judgment-Based Approach

Recent disturbances involving inverter-based resources (IBRs) in power systems around the world have brought the topics of IBR model validation, accuracy, and appropriateness of various simulation domains to the forefront. The development and subsequent use of any mathematical model comes with an associated query of the accuracy and, more importantly, the sufficiency of the model's representation of actual equipment. As one model cannot span multiple simulation domains, a hierarchy of models with varying levels of complexity and fidelity is commonly used across many disciplines. It is important to identify both the most appropriate IBR model and the simulation domain to be used for each study to be conducted.