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From: "Carlos E.R." <robin_listas@es.invalid>
Newsgroups: sci.electronics.design
Subject: Re: The Spanish Grid Drop-out - recently released information.
Date: Mon, 12 May 2025 23:33:30 +0200
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On 2025-05-12 16:36, Martin Brown wrote:
> On 10/05/2025 17:58, John Robertson wrote:
>> On 2025-05-10 9:46 a.m., Bill Sloman wrote:

....

>> Perhaps for systems that have large solar or wind arrays they could 
>> use a number of large rotating masses to smooth over these burps? 
>> Vacuum and magnetic bearings...
> 
> They are intrinsically dangerous if they store enough energy to really 
> matter. We had such a steel reinforced lead flywheel and motor generator 
> configuration on big radio telescopes storing just enough energy to stow 
> them in the event of a storm taking out 3 phase mains power. The dishes 
> can only reliably survive storms if they are pointed at the zenith.
> (sometimes not even then)
> 
> Working out how far it would travel if it ever broke free from its very 
> substantial bearings was used as an exam question. It was installed 
> pointing so that it would not hit any property if it did.

It would affect earth rotation, too. Some huge water reservoir in China 
is affecting it already.


....

-- 
Cheers, Carlos.