On Sunday, 19 July 2015 21:54:11 UTC+1, tony sayer wrote:
It's a pole transformer, 25Kva ISTR
The issue is not the transprmers' capacity, it's the rise in local voltage caused when the panels are at full output and nobody locally is using any electricity.
Made worse by other people nearby having PV as well (not on same transformer)
On Wed, 15 Jul 2015 06:27:49 -0700 (PDT), David Paste
Returning to the original post, I took another look at the numbers the
OP put up, based on the results from Chris Dixon and Harry.
50,000 panels and 40 MW output. Assume the latter to be peak output,
then each panel has a Wp of 800 (40,000,000 /50,000)! That's some
output, bearing in mind that even CD's panels, at 1.8m^2, only have a
Wp of 260. I suppose it depends on how big their panels are; probably
bigger than those for domestic roof installations. To get a panel with
a Wp of 800 would need a panel size of something like 2m x 3m, at
Wp/m^2 values of say 133 (a not untypical value).
But assuming that's OK, that the 40MW is peak power and they use
super-sized panels, how much power might they be expected to supply
*on average*? Harry's panels give peak power per m^2 of ~134Wp/m^2
(185/1.383), while CD's give 144Wp/m^2 (260/1.8). *Actual* average
powers are 15.7 and 15.9W/m^2 *(see end of this thread for discussion
between Harry and myself), i.e. 11.7% and 11.0% of Wp, respectively,
say a mean of ~11.5%.
So realistically, that 40MWp becomes something around 4.5-5MW average,
perhaps a little more depending on the type of silicon used on the
panels (poly- vs. mono-crystalline).
The renewable lobby does like to present it's case in deceptively
optimistic terms, hoping that the sheeple will take it at face value,
which they almost always do :-(
I don't know where one draws the line between being optimistic with
the truth and bare-faced lying, but I reckon they get pretty close at
(E&O? Blame Bacchus!)
Worse, we cant cope with 40GW of midday summer sun power without
switching off all our reactors and fossil power stations, running every
interconnector backwards to export the surplus, and throwing 10GW away.
Lets stop at the unholy mess 40MW causes us before adding a single new
New Socialism consists essentially in being seen to have your heart in
the right place whilst your head is in the clouds and your hand is in
Christ!, are you expecting serious responses to statements like that
So shut them down and where is the power lost coming from?.
Answer do like the Germans are doing, import some from Nuclear powered
France and so are others.
What's the cost of another 2 G/Watt interconnector cable to France I
A virtual nuke that is;)..
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