A number of requirements for GFM capabilities have been defined with some requirements at a very high level e.g., HECO and UNIFI, while others are providing more detailed technical specifications e.g., NGESO in Great Britain in their grid code change GC0137. This project team will examine the question of how to test for such requirements and demonstrate expected performance.
This project will demonstrate how to verify the expected performance from inverters with advanced controls for various high-level requirements that are being defined by the industry (using both frequency scans and time-domain characterization). The purpose of this project team is to provide more clarity to the industry on meaning of these requirements and behavior sought as well as provide some guidance on possible testing and verification procedures. It may also inform development of the future interconnection requirements for advanced inverter controls.
Completed Work:
Testing the Performance of Grid-Forming Resources: Test Methods and Performance Metrics for Evaluating the Voltage Source Behavior of Grid-Forming Resources
This report presents test methods and performance metrics to rigorously quantify the system-strength benefits of grid-forming (GFM) resources