Analysis of Phasor Measurement Strategies for application in synthetic inertia response

The increasing integration of renewable energy sources into electrical grids, replacing conventional synchronous generators with inverter-based alternatives, poses challenges to grid stability due to diminishing effective rotational inertia. This paper focuses on the critical role of synthetic inertia in addressing stability issues during fault events. Specifically, it investigates the transient behavior of two phasor measurement units based on frequency lock loop and phase locked loop architectures The analysis compares the transient performance of the SOGI-FLL and DDSRF-PLL in terms of start-up behavior, total vector error and frequency estimation capability during disturbance events.