R&D NESTER's work on inertia in the electrical system
Within
the scope of one of the R&D Nester projects with REN (the Portuguese TSO),
the themes "Phenomena of low inertia in the electrical system",
"Use of WAMS (Wide Area Monitoring System) to assess low frequency
oscillations in the electrical system" and "Definition of WAMS
alarms" have been studied and analysed.
Regarding
the "Phenomena of low inertia in the electrical system", the last 10
years were analyzed and the moments of "low inertia" were quantified
based on criteria of quantity of MW of inertia and percentage of inertia in
relation to the quantity of generation. The results showed that 2019 was the
year where the occurrence of such situations was highest. It is also possible
to check the trend over these 10 years.
Regarding
"Use of WAMS (Wide Area Monitoring System) to assess low frequency
oscillations in the electrical system", 8 events in Iberia and the rest of
Europe were analyzed, which allow a better understanding of these phenomena and
how to detect them.
Finally,
regarding the "Definition of WAMS alarms", the previous work
described above, allowed to identify a set of suggestions for the definition of
alarms for the national electrical system.
Further work is still being pursued.
For any questions, contact R&D Nester (www.rdnester.com).