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From: Bill Sloman <bill.sloman@ieee.org>
Newsgroups: sci.electronics.design
Subject: Re: The Spanish Grid Drop-out - recently released information.
Date: Sun, 11 May 2025 15:48:16 +1000
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On 11/05/2025 4:22 am, Don Y wrote:
> On 5/10/2025 9:58 AM, John Robertson 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...
>>
>> I imagine a series of rotating masses so if any single or several fail 
>> (earthquake, etc.) the system wouldn't collapse.
>>
>> As you say, there is little inertia in these solar systems unlike 
>> water or fuel generated power.
> 
> The sun is *still* shining.  Why can't *it* supply the power
> to all of the distributed inverters around the country at the
> appropriate phase angle?  You only need storage if your
> actual source of power disappears, relative to the load.
> 
> I.e., turn excess generation capacity to "braking mass"

The sun disappears every night, and less sunlight gets through when the 
sky clouds over. Extra solar panel area and grid scale storage makes 
this easier to deal with.

-- 
Bill Sloman, Sydney