IV. APPLICATIONS OF PHASOR MEASUREMENT UNITS
Classical protective relays perform the protection of single
elements of a power system, as generators, transformers, lines
or busbars. For the protection of such objects, locally
measured values are sufficient in most cases. The response
times of such devices are typically in the range of several
milliseconds.
SCADA systems however, have system wide view on the
power system, but due to limited data rates this view is
relatively static.
The data from the PMUs enable the SCADA applications
to obtain a dynamic view of the network [9].
The abbreviation WAMPC stands for the following main
applications:
• Network monitoring and fault analysis (Wide Area
Monitoring)
• Network/System protection (Wide Area Protection)
• Network operation and control (Wide Area Control)
Furthermore, certain system protection functions like load
shedding at under frequency, overload protection or power
swing detection can be integrated into the PMUs.