Re: The Spanish Grid Drop-out - recently released information.

On 5/15/25 12:43, Carlos E.R. wrote:

On 2025-05-15 12:37, Carlos E.R. wrote:

On 2025-05-15 08:18, Bill Sloman wrote:

On 15/05/2025 5:14 am, Carlos E.R. wrote:

On 2025-05-14 16:16, Glen Walpert wrote:

On Tue, 13 May 2025 07:50:36 -0700, Don Y wrote:

 ...
 

Wouldn't it be easier to have the entire distribution network using DC?
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just saying with a glass of wine in my hand :-)

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That's probably correct, but it wouldn't be cheaper. It's probably true that taking DC down to the sub-station level could be cheaper, with today's technology, if you were starting from scratch, but since that kit is already there you would be throwing away a lot of big expensive transformers from the next level up, and replacing them with a lot of big, expensive - if less expensive - inverters. It would take a lot of capital investment to make the switch, and the people who operate the grid are adminstrators rather than entrepreneurs.

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I'm just thinking that adding sources to a DC distribution network is easier: the voltage just rises or drops. Possibly it autoregulates.
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But of course, we have a huge installed system, replacing it would be terribly expensive.

 Thinking again. Would it be possible to have even the rotating mass generators connect via inverters? I mean, the inverters would inject power always at the exact frequency no matter what. The voltage could vary, but the frequency would be stuck.
 Of course, I know basically nothing of power generation/distribution, so don't take me too seriously :-)
 

The frequency is the signal that tells generators how to adjust
their power! You *don't* want to interfere with that.
Individual generators and inverters can't force the frequency.
They *must* sync to the grid. The frequency is the same all over
Europe. (Barring small excursions to dynamically adjust the phase
from place to place. f=dphi/dt.)
Jeroen Belleman