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Europe: close to power grid blackout (49,74Hz power line frequency)

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Re: Europe: close to power grid blackout (49,74Hz power line frequency)

#71
post #52

There's no single "Europe" grid.

There isn't a single grid, but there is a large synchronous grid covering most of continental Europe: https://en.wikipedia.org/wiki/Synchronous_grid_of_Continenta...

Maybe. Some of the "continental" grid is in Africa, the above second map doesn't color in Russian bits of Europe, and then there are the other European grids. But the high bit is that there are significant parts on not this grid, there are 6-ish grids.

Re: Europe: close to power grid blackout (49,74Hz power line frequency)

#72
post #29

Am I naive in assuming that many grid stability issues could be fixed by mandating all electric heaters automatically cut off at, say below 49.9Hz? It is my understanding that modern home EV chargers have the capability to do this to some extent, but I'm not sure if it's actually utilised?

It seems like a better solution would be batteries and/or the allowance of dirtier power generation (in emergencies). I can't even wrap my head around the regulatory nightmare of shutting off everyone's heat at night in January.

Dirtier power generation doesn't work because physics. Frequency gets too high (a few Hz or so), turbogenerators/turbines blow up. Frequency gets too low, resonances destroy them. Frequency shifts quickly, massive torque and current spikes ensue. Load is dumped, frequency ramps up quickly and voltage rises very quickly. There are a number of control and monitoring systems in a power plant which ought to prevent these from happening, but in the bigger picture this means that grid power needs to be balanced continuously in order to keep nominal frequency. This becomes challenging when an interconnect fails, because this leads to very fast load changes.

The reason for 50 Hz +- 0.2 Hz isn't so much about consumers; it's about being able to run the grid. In Europe there is a long-term control loop that makes it a quite accurate 50 Hz, so synchronous motor clocks work, but that has essentially nothing to do with the normal frequency control.

Re: Europe: close to power grid blackout (49,74Hz power line frequency)

#73

I like these stories because they make me remember that things like electricity and water are not free. Water and electricity should be a lot more expensive, then people would start to understand that having an Electric car, 10+ devices in the household, a washer, a drier, lights, tvs and all that shit is expensive for the lot. But people don't really care, as long as our things work and we are not bothered by anyone…

Infrastructure is infrastructure

Re: Europe: close to power grid blackout (49,74Hz power line frequency)

#75

I like these stories because they make me remember that things like electricity and water are not free. Water and electricity should be a lot more expensive, then people would start to understand that having an Electric car, 10+ devices in the household, a washer, a drier, lights, tvs and all that shit is expensive for the lot. But people don't really care, as long as our things work and we are not bothered by anyone…

So you want people to use gas cars and gas-powered boilers to heat their home? Or should we make that more expensive as well so we can make sure more people spend more time with heating off in the winter?

Isn't a gas-powered heater more efficient than an electric heater powered by an LNG plant? Electric heating is pretty ineffective, although heat pumps can work well.

Re: Europe: close to power grid blackout (49,74Hz power line frequency)

#77
post #28

Earlier quoted context omitted.

At least 3 large power stations. But is that necessarily a loss of supply or could it be a spike in demand? The UK was famous for demand spikes when people turned on kettles during the break in popular soap opras or football games. Maybe a cold day tripped a bunch of houses to turn on their electric heating?

related: Water usage (toilet flushes) in the city of Berlin during the Germany - Portugal soccer match https://www.reddit.com/r/soccer/comments/28mmsn/water_usage_...

Fun fact: your water company probably has TVs in the control room specifically so the operators can now when those flush breaks are coming up and ensure the water towers have enough water at those times.

(I interned at a water treatment plant a while ago. Watching the 30 million gallon cleartanks drain when the plant lost power really hit home (at ~6-7 million gallon/hr) how much water an entire city uses.)

Re: Europe: close to power grid blackout (49,74Hz power line frequency)

#78
post #54

Yet governments insist newbuilds to be on electric heating... I was saying this won't be nice for a long time. Example: my house, a 1954 built semi-detached - the official average unit in England - has a single phase 100A main cutout. Hob 32A, 2x sockets circuits 2x16A, 2x light circuits 2x6A, oven 16A. That's already 92A at total theoretical capacity. If I was to add FIR panels, that's bare minimum +32A, plus water…

If some people have to freeze to death to keep the planet from warming so be it.

Re: Europe: close to power grid blackout (49,74Hz power line frequency)

#79
post #29

Am I naive in assuming that many grid stability issues could be fixed by mandating all electric heaters automatically cut off at, say below 49.9Hz? It is my understanding that modern home EV chargers have the capability to do this to some extent, but I'm not sure if it's actually utilised?

That would be such a gross government overreach.

Re: Europe: close to power grid blackout (49,74Hz power line frequency)

#80
post #54

Yet governments insist newbuilds to be on electric heating... I was saying this won't be nice for a long time. Example: my house, a 1954 built semi-detached - the official average unit in England - has a single phase 100A main cutout. Hob 32A, 2x sockets circuits 2x16A, 2x light circuits 2x6A, oven 16A. That's already 92A at total theoretical capacity. If I was to add FIR panels, that's bare minimum +32A, plus water…

> Yet governments insist newbuilds to be on electric heating

Which governments are those?

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