The term "giant" is not any official terminology, but that particular outage would be considered an "Extensive Incident" (red) due to it being in the T2 category, ON2 category, and possibly in the L2 category (maybe L1, I don't know the Latvian grid well enough).
A lot of people in the industry would say that a 'red' incident is 'giant', as they tend to have high standards for reliability and security.
[0] - https://eepublicdownloads.blob.core.windows.net/public-cdn-c...
> Russia is an enormous threat to Western civilization, haven't you heard? /s
Merely yet more anti-russian neocon propaganda, who are nostalgic for the cold war. It's the $insert_one_of: Chinese, Russian, North Korean, Iranian hackers who took down the electric grid, hacked hospitals etc.
Oh, wait, yes - that's exactly what they've done.
"Giant" per what definition? It happened because of damaged isolation for 330kV line and automatics just shut it off. It also brought overflow within 110kV line affecting 160k people in capital and around it.
Communications was affected (apparantly they didnt test their energy backup systems), traffic, homes. Diesel generators were put to work where needed. Our datacenter was up and running, being backed up by other electricity lines and diesel.
Yeah, a MAJOR outage, but in LESS than 2 hours everything was restored.
Nothing to do with frequency. Why even mention it and try to associate with Russia?