Nikos D. Hatziargyriou

Frequency Measurement Practices for Inertia Assessment in Inverter Based Resources Dominated Power Systems

Transmission system operators and protective relays compute the rate of change of frequency (RoCoF) from frequency averaged over tens to hundreds of milliseconds, as standards and grid codes specify. Any response delivered inside that window lowers the measured RoCoF, so the inferred inertia depends on the window and t...