Measuring AC supply frequency

You're just making that up.

generators are inherently high impedance, you can't make any more current with one than your field current and the turns ratio from rotor to stator allow. think of them as being like current transformers.

(I'm assuming wound field instead of PM - but you get the same sort of effect either way)

On a sunny day (Wed, 10 Mar 2021 10:45:19 +0200) it happened snipped-for-privacy@downunder.com wrote in snipped-for-privacy@4ax.com:

The problem is the storage And the solar green crowd will screem when they get cold feet or have to walk. One vulcano eruption of decent size and nothing goes And there is geopolitical risk, in your example Spain could cut the wires in revenge for us supporting independence of what was it? Catalans or something That risk is even greater when putting solar panels in Africa Solar panels fine, I have one. But for world power solution? Diversity in power sources is one thing you need Nuclear solves the storage problems, most problems.

Thank you for your nice words.

Every day 1 kW x 24 h = 24 kWh would be available to charge the car battery..

While some Teslas might have battery capacity up to 100 kWh, most EVs have battery capacity of 20 - 50 kWh and in many cases a typical commuter doesn't have to fully charge the car every day.

A 24 kWh daily charge would be sufficient in most cases, so 1 kW average power / car is OK.

You may think so. Taking John Larkin's propaganda seriously is a whole lot funnier, but you don't get that particular joke.

snipped-for-privacy@downunder.com wrote: ==========================

Pure insanity

F*****ts like YOU need to be locked up.

In a mental facility - with a straight jacket too.

...... Phil

And just how would that electricity find its way to Germany? Just how big would the 3000 km long interconnectors have to be? What voltage and current would they have to carry? Where is the power going to come from at night? Germany's power generation capacity is about 200GW at present (it generates about 600TWh).

"Some political tidying up". That's a bit of an understatement, don't you think? Or did you forget the smiley at the end?

If it focussed the need for anything, it would be the need for room temperature superconductors, or at least those which would be practical in a 3000km cable at somewhat higher than liquid helium temperatures.

Jeff Layman wrote: _____________________

On board ships, big ones, filled instead with Elon Musk Lithium battery packs !!!

Hundred of the buggers, arriving every half hour to plug into the national grid via a massive connector. Might need a few squadrons of ME109s to provide top cover !!.

Damn the torpedoes.....................

...... Phil

On a sunny day (Wed, 10 Mar 2021 11:39:56 +0000) it happened Jeff Layman snipped-for-privacy@invalid.invalid wrote in <s2ab6c$38e$ snipped-for-privacy@dont-email.me:

Germany, during Merkel's rule, has deteriorate to a bunch of idiots. That scared women has destroyed all nuclear power plants, got millions of clueless refugees into the country lowering average IQ and is now listening in on the AfD political party, the opposition, out of fear for the right. Merkel a leftist undercover agent for chaos. No I am no AfD member, not even in Germany, but I sure can understand some of the AfD points. Flipping scared women as leader never worked in history did it?

See all the mistakes Kramp Karrenbauer makes in the EU (vaccins related) making the IRA come alive.

That will be prohibitively expensive.

Just use nuclear, problem solved.

verwarde terrorist dreigend met toetsenbord wrote: =========================================

Or is it something worse ?

...... Phil

Well, there are lots of cruise ships doing nothing as a result of Covid. Just think how comfortable all those batteries could be!

On a sunny day (Wed, 10 Mar 2021 04:28:41 -0800 (PST)) it happened Phil Allison snipped-for-privacy@gmail.com wrote in snipped-for-privacy@googlegroups.com:

Yea I wrote that

Well she does not want an other term I have heard, but the party does.

Who knows...

engineers should design and build things, putting someone in control just because it is a women and there is a quota for minimum women is pre-programmed disaster.

It IS that simple, France, UK, China, Russia, are examples. Again it is that fear from a green bunch of idiots that now are becoming a majority helped by fear for uncle Sam eeeh Tom for proliferation that does a brainwash to this generation some idiot women sailing across some ocean as symbol / pawn in the game of the ever selling more crap industry now selling CO2 remedy against climate change while CO2 has zero effect on climate and never had,

--------------------------------

..... Phil

And pigs might fly.

Angela Merkel as "scared" is decidedly improbable. Getting rid of nuclear plants played well with the German population. All of them were downwind of Chernobyl.

Angela Merkel got to the top because she was clever, and she has stayed there by being clever. She's certainly not any kind of token woman.

One problem might be solved, but you open up a whole range of potential problems. Nuclear advocates are very glib about getting rid of nuclear waste, but we've been accumulating it for more than half a century now and there isn't one long term nuclear repository anywhere, and since long term means about 100,000 years, fudging the issue is irresponsible idiocy.

None of them has a long term repository for nuclear waste.

Not what the ice core data says. Nor what Fourier had worked out in 1822. The "greenhouse effect" keeps the earth surface a lot warmer than the -18C you'd get without the insulating effect of the atmosphere.

Water vapour is the most important greenhouse gas, but it equilibrates with the oceans within about three weeks. Carbon dioxide takes about 800 years to equilibrate, so we can screw up the planetary temperature for quite a while. if we burn enough fossil carbon.

That was the DESERTEC plan for more than a decade ago. At that time CSP plants were cheaper than PV panels.

An HVDC cable with up to 1000 kV and a few thousand Amperes can carry a few GW of power each. If the energy is "free" and the dissipated heat losses will be handled by the sea water,so you can overload the cables quite significantly. Quite a few cables would be required, but not a huge number.

In a CSP plant a fluid is heated by concentrated sun beams and the fluid then turns a turbine and a generator. Some hot fluid can be stored during the evening into tanks and then run it through the turbine at night.

It should be also noted that the electric consumption is lower at night. It makes perfectly sense to build solar production capabilities corresponding to the day/night consumption difference. Building more solar power will require special tricks e.g. with battery or other storage for the night.

This was before the Arab Spring :-). After that, it would be quite risky to make large investments in North Africa.

Some 'high temperature' superconductors work at liquid nitrogen temperatures.

Superconducting cables require a quite a lot cooling power to run in order to remove the heat entering from the environment into the conductor itself. Multiple stage cooling is needed, consuming a lot of electricity.

My estimate is that at least 10 GW of electricity should be transferred in the cable, so that the percentage of cooling power is insignificant.

That would be true if you charge it with 1 kW, but since you have no time driving around that day, there would not be much point in charging it in the first place :-)

However with a 2 kW (10 A @ 230 V) the charging time would be 12 hours and you can drive around the remaining 12 hours, if the 24 kWh charge is sufficient.

At 24 kW (3x32 A mains connection), the charging time would be one hour and you would have 23 hours to drive around.

The insanity is all Phil's. Cars typically spend 95% of their time parked, and when electric cars get more popular you are going to be able to charge then pretty much anywhere where you'd want to park them. 5% of 24 hours is a bit under and hour and quarter. Electric cars typically use about 15kWh to cover 100km, and it is hard to get that far in an hour if you aren't on a motorway. One kilowatt is plenty to charge up a a parked car

Funny, Phil hasn't called him autistic yet.

He'll probably get around to it. Phil is being as silly as ever, but he doesn't seem to be violent in real life, so care in the community is all he needs.

On a sunny day (Wed, 10 Mar 2021 05:37:19 -0800 (PST)) it happened Bill Sloman snipped-for-privacy@ieee.org wrote in snipped-for-privacy@googlegroups.com:

Sure with some help those fly all the time in what is called airplanes FYI.

So was I, and the filters in the aircos where I worked had to be properly disposed of due to contamination and you were not recommended to eat vegetables from your garden.

As I worked in nuclear before that, I was not much impressed or scared that time. And guess what, here I am still alive ! So is (at least AFAIK) Merkel. Politicians like taxing and scaring people to get control.

Wildlife is flourishing in Tjernobyl now.

And none have died from the current ones (it is so small compared to earth). In fact work is going on for Thorium and fusion based reactors and all that.

I buy ice cream in plastic containers, nice.

Try reading this:

You may find that the CO2 thing was a consequence of the Milankovich cycles.

Eventually we will HAVE to use nuclear when we want to persist through the next glacial period. Also as propulsion to find a planet were we as species could live by the time the sun expands and engulfs earth..

This was fun to read, but could not get the paper:

It appears that losses are in area of 1.6% per 1000km. I underestimated the cable length - it's more like 4000km. That would account for over 6% loss, which is appreciable. Less than 1000km would be under water; the rest would be above ground, half of which would be in a very hot climate. Supergrids of 765kV+ are already in use, so it's not new tech, but are in usually considerably cooler climates. Interestingly, according to this 2005 paper

According to the interconnector wiki "The longest interconnection as of

It's not impossible, but would require a sustained technical effort.

Controlling terrorism threats to a supergrid over 2000km long would be a very difficult challenge. It would be very expensive at the start, but perhaps cheaper in the long run, to bury the cable at least 10m underground. That would make damage caused by terrorism much more unlikely.

I came across am interesting idea, which used liquid hydrogen to cool the cables to superconducting temperatures. The cable is laid in pipes containing the liquid hydrogen which would be used as a movable liquid fuel for use in hydrogen-powered cars, etc, so sort of killing two birds with one stone. But it might kill more than two birds if the pipe ruptured...