January 7, 2019
Regions such as Hawaii, South Australia, Ireland and Texas have recently experienced significant growth of inverter-based renewable generation, mainly wind and solar, and are now operating with very high instantaneous penetration in excess of 50-60%. As this penetration increases globally, several regions have identified limitations and challenges which indicate that it may not be feasible to maintain the desired level of system reliability with extremely high penetration of inverter-based generation using current technology. Among many identified limitations and challenges such as system inertia and ramping, system strength is one major challenge that needs to be addressed to maintain reliable operations with inverter-based generation. System strength refers to the ability to maintain…
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