Wonder what happened, 50.5 Hz Frequency and a blip in power around the same time (wider than just local to me too).
-
And there's the EXN notice from Transpower
Excursion: Frequency
Time: 13-feb-2026 18:11
Location: North Island
Affected Plant: Maraetai Whakamaru 1 Tripped
NI Hz Level: 50.55That frequency is a bit low!
About that time I heard a beep from the UPS in the other room and a light flickered.
-
And there's the EXN notice from Transpower
Excursion: Frequency
Time: 13-feb-2026 18:11
Location: North Island
Affected Plant: Maraetai Whakamaru 1 Tripped
NI Hz Level: 50.55That's about here on the transmission network
-
That frequency is a bit low!
About that time I heard a beep from the UPS in the other room and a light flickered.
other direction but high enough for them to send a notice out
We noticed it here in Taranaki and a friend in Welly asked me if I was doing something on the NAS that I have at theirs because something beeped. So definitely across the island it seems.
The HVDC would have protected the South Island from it (which is handy I guess).
-
Guess there will be an over frequency event thing now, to go with the under frequency one from the other week (when the HVDC decided to sulk).
-
Guess there will be an over frequency event thing now, to go with the under frequency one from the other week (when the HVDC decided to sulk).
My power data from the inverter is updated often enough to catch that 50.5 Hz spike too
-
R ActivityRelay shared this topic
-
@alex aren't spinning machines silly?
-
other direction but high enough for them to send a notice out
We noticed it here in Taranaki and a friend in Welly asked me if I was doing something on the NAS that I have at theirs because something beeped. So definitely across the island it seems.
The HVDC would have protected the South Island from it (which is handy I guess).
There’s quite a substantial band of thunderstorms.
-
other direction but high enough for them to send a notice out
We noticed it here in Taranaki and a friend in Welly asked me if I was doing something on the NAS that I have at theirs because something beeped. So definitely across the island it seems.
The HVDC would have protected the South Island from it (which is handy I guess).
-
There’s quite a substantial band of thunderstorms.
@futuresprog yeah I suspect that’s why I’m getting lots of reclose voltage notifications
Arapuni Hangatiki Ongarue 1 Auto-reclosed
Arapuni Hangatiki Auto-reclosed, Arapuni Hangatiki Ongarue 1 Auto-reclosed -
@futuresprog yup 50. Limits are 49.5 and 50.5 for notifications.
-
Wonder what happened, 50.5 Hz Frequency and a blip in power around the same time (wider than just local to me too).
@alex my ups did not like that
-
Yeahhhh the transmission network is getting peppered with lightning. Multiple notifications about voltage excursions and now a transmission circuit risk due to losses of some circuits.
