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#poweroutage

6 post6 partecipanti1 post oggi
Pubblico
Heather Evans

Good morning tooters. Bit of a different morning today, I have no power! No one in my area has power & hasn’t since just after 1am, what fun. Stayed in bed until 7.30am keeping warm & waiting for full light & deciding what to do. It’s around 4c now, so pretty chilly, but only my feet are cold & it will be a lovely day by the time it gets to the max of 23c this afternoon. According to ausnet the power could be out all day. I must admit it has thrown me a bit, it’s been a long time since any real outage here but I can work around it for now. I removed my little portable induction cooking plates & the cover I have over the gas cooktop. Found some matches as the little gun thingy (tech term) has died. I now have a cup of tea & have boiled a couple of eggs. I’ve got the mocha pot out that I use when house sitting & can make coffee. So I’m good for food & cooking - yay! My daughter & the grandkids were going to be coming round later, miss 7 wants to give me something from the schools Mothers Day stall. I’m not sure if I’ll end up down there instead, just waiting for her to get back to me. I would like to be able to fully charge my devices, so may well go down there. I think I might drop into the supermarket too & get another gas lighter gun thing & matches - can you still buy matches 🤷🏼‍♀️. I have candles if necessary for tonight.
Have a great #Sunday everyone. Stay warm & have a lovely day.
#Weather #PowerOutage #MothersDay #Autumn

Pubblico *
Farooq | فاروق

Unfortunately, my horse power computer is now offline. And I am in another city so no access to it. It's likely that there has been a #poweroutage which is now very common in my country #iran

I am doing experiments with #wakegp to see if my simple method for parsimony pressure is effective. Till now, it seems that its effect is very little. I'm thinking of other methods for parsimony pressure such as bucketing and tournament selection(for size instead of fitness).

I am expecting to deliver results in summer, God willing.

#Geneticprogramming#evolutionarycomputation#EvolutionaryComputing
Pubblico
Wouter Tebbens

Last week's #PowerOutage in Spain was a wake-up call for many people. I personally found out at 12:35 that my printer wasn't responding, and seeing that our house was without electricity, I went out on the street, like several neighbours. Through them, I got fragments of news, some had still mobile data connection, while most had no network coverage whatsoever.

1/X

Pubblico
bjb :devuannew: :emacs:

The headline here said:
"Spain, Portugal turn power back on, seek answers after one of Europe's worst outages"
(CBC news, "world" section)
They had a sub-7 hour outage.
I guess their electric grid is a lot better than the North American ones, that occasionally suffer multi-day outages.
Eg, ice storms, electromagnetic storms, excessive demand events (those last in Texas).
So kudos to Spain for quick recovery.
#PowerOutage

Pubblico
Carlos Mogas da Silva

So... Let's do a mental exercise here (just speculation at this point).
What would happen if some solar inverter cloud was hacked and the hackers gained access to thousands (or millions) of grid connected inverters that were all producing something along the lines of 10 to 20 GW and they simply send a command to turned them all off? 🤔

#portugal#spain#poweroutage
Pubblico
Adam Bishop

So, how did we, as a family, cope with the #blackout in Granada?

We bought fresh tomatoes and bread with some spare cash, and fished some canned tuna out from the back of the cupboard.

We played board games, and, with the little one, made an old cathode-ray TV out of a cardboard Bauli colomba box, so we could hear some (unicorn!) news. Then we went to bed and read in the dying light until our eyes flickered shut.

Two kids playing the board game Ticket to Ride, as the dying sun streams in from the window.
A brightly rainbow coloured cardboard cathode-ray TV, with buttons added to the cardboard, a bulb attached to the top as an antenna, and a wire hanging out the back.
Kids painting a brightly rainbow coloured cardboard cathode-ray TV, with buttons added to the cardboard, a bulb attached to the top as an antenna, and a wire hanging out the back.
#apagón#powerOutage#Spain
Pubblico
el Celio 🇪🇺 🇺🇦

💡 🇪🇸 🇵🇹
LESSON FROM THE POWER OUTAGE

What we learned from the power outage of yesterday in Spain and Portugal is that without hydroelectric and fossil-fuel power stations you can't restart the grid, while nuclear power stations take a long time to restart.

#poweroutage#spain#portugal
Discussione continua
Pubblico
Marty Cormack

#PowerOutage
But a couple decades ago, I lived outside the city limits on a rural power cooperative with above ground infrastructure and we encountered multiple hour outages every few years. Being also on well water and having a disabled child, our contingencies were: 5 gallon filled water container and a small generator (for some lights, gas furnace fan and ignition and refrigerator).
With our climate crisis and possible deathly heat waves, air conditioning contingency may prove critical. 2/2

Pubblico
Marty Cormack

#PowerOutage
Reading about the Spain/Portugal widespread and lengthy power outage got me thinking again about contingencies. I live in a city with a large medical center and multiple tech industries, and robust electric power infrastructure. I cannot recall a power outage lasting more than a few minutes in multiple decades. So our contingencies are just battery backups for computer, Wi-Fi, and TV so a 5 minute outage does not even disrupt anything we're doing. 1/x

Discussione continua
Pubblico
Mark Burton

This very interesting article basically says it was likely to be either human error or a system fault that caused the Iberian apagón or grid shutdown.
Not an excess of wind or solar, not a cyber attack, not a weather abnormality.
However, because of the uneven and rapid expansion of solar and wind, the system relies on quick corrections to rebalance frequency & voltage. Seems likely there was a system fault to do with the rebalancing mechanism.

#Spain#PowerOutage#GridCollapse
Pubblico
ℒӱḏɩę :blahaj:

The Spain/Portugal power outage is fascinating to me, as an energy storage professional.

Lots of theories flying around about the cause. Atmosphere, cyberattack, renewables.

Power grids keep balance via their AC frequency. In the US, it's 60Hz. If the frequency is a little above 60, then there is a surplus of generation. If the frequency is below 60, there is a surplus of demand. Generators and loads respond to this - it's called frequency response.

Last year in Virginia, in data center alley, there was a frequency disturbance that caused a large number of data centers to drop off the grid onto backup power, leaving a huge surplus of generation. It almost collapsed PJM. (I'm actually working on a project to mitigate this using very large batteries).

Spain lost 15GW of generation in seconds. My speculation is frequency went out of spec, for whatever reason, which caused a ton of solar and wind generators to island themselves, and the situation amplified itself. #theory #spain #poweroutage

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