Synchronous Generator Governor Response: Performance Implications Under High Share of Inverter-Based Renewable Energy Sources

Inverter-based generation sources' significant uptake has seen most power system operators place a strong focus on unlocking their capability to respond frequency excursions. Consequently, the effective utilization of conventional assets improve regulation in systems received less focus. This letter highlights two crucial aspects (governor deadbands and governor inactivity) pertinent assets, which must be considered by operator when operating with high share inverter-based sources. Poor control is shown significantly impact regulation, thus undermining operation performance, an Australian case study. Furthermore, inactivity causes instability owing degradation response. For sources, implementation properly chosen mandatory response recommended regulation.