The worldwide motivation to use renewable energy sources and power electronics
interfaced electric drive loads has not only reduced the power system inertia constant but …

The emerging smart-grid and microgrid concept implementation into the conventional power
system brings complexity due to the incorporation of various renewable energy sources and …

System inertia plays a vital role in controlling the angular stability of the system during a
disturbance. Due to increased penetration of power electronic interfaced sources, such as …

In modern power systems, the Rate-of-Change-of-Frequency (ROCOF) may be largely
employed in Wide Area Monitoring, Protection, and Control (WAMPAC) applications …

The time-dependent inertia can trigger rapid frequency variations, which have become main
concerns in power system stability. Prior understanding of the system inertia will help …

Future plans for integration of large non‐synchronous generation and the expansion of the
power system in the Nordic countries are a concern to transmission system operators due to …

Synchrophasor estimation is typically performed by means of spectral analysis based on the
discrete Fourier transform (DFT). Traditional DFT approaches, though, suffer from several …

This paper investigates the impact of synchrophasor estimation algorithms in Under-
Frequency Load-Shedding (UFLS) and Load-Restoration (LR) schemes, relying on …

A description of the importance of rate of change of frequency (ROCOF) measurements to
the operation of electricity networks is given. The susceptibility of ROCOF measurements to …

Low and time‐changing inertia values due to the high percentage of renewable energy
sources (RESs) can cause stability problems in power systems due to rapid frequency …