Re: 1GW (sic) Battery Energy Storage Systems

Martin Brown <'''newspam'''@nonad.co.uk> wrote:

[..]

 
It will have ~900 container modules of batteries as close together as
they dare (half the US regulation spacing) and in double lines of 50.
 
SO that makes me wonder how big is a 1GW transformer operating at 400kV?
And how much does one cost?
 
I'm guessing the secondary to handle 2500A will have to be (30A = 2mm^2
so 3000A ~ 200mm^2 = 16mm diameter) and at a 40:1 stepdown the low side
will have to be 40x bigger cross section 6x linear size hollow core?).
Are these guesses approximately right? How many turns on each?
 
How much soft iron core does it require (approximately)?

[...]

Have we got the industry that could make such a thing - or shall we be
buying it from China?


--
~ Liz Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk