The first exploratory study undertaken by the project team assesses the impact of obtaining essential reliability services from existing IBRs to supplement services required from new IBRs with advanced capabilities.
The present paper summarizes the results of the study assessing the advantages of leveraging the full capability of existing IBRs using a simulation exercise. This study focused on leveraging inverter-level frequency response and voltage control to assess how using this additional capability can benefit the network in an extremely high-IBR case. It focused on performance-based specification for system needs and services rather than a particular inverter technology, and it highlights the value in considering particular services from generators rather than using a single general term like “voltage source behavior” to explain the behavior that is needed or wanted from advanced or future IBRs.