Apart from the hydroelectric station possibility there's another one
involving water: much of the country has been experiencing heavy
rainfall for several days - the sort of stuff that makes Lincolnshire
look like April showers. Commonly heavy rainfall used to get into the
underground systems and disable power distribution on a block-by-block
basis or if very unlucky a whole barrio might go down but there has been
massive investment in the electricity infrastructure over the past few
years - paid for by removing the subsidies on customer bills - and
that's resulted in far fewer events of that type. My guess is that the
huge amount of rainfall and subterranean flooding has picked out a
hitherto undiscovered weakness. We should know the answer in a week or two.
I'm going back there for a while in July: I could give you live updates
if you liked.
Oh well: please yourselves :)
Heheheh: (most) hospitals have back-up emergency systems and I think the
internet went down, not because the ISPs couldn't P the I S but because
the powered bits near the customers lost power. I know first hand that
the 3G and wired telephone systems still kept going. The railway system,
street lighting and signaling, all domestic and industrial supplies went
More worrying perhaps are those people who live at home despite being
seriously ill and who are electrically dependent on life-sustaining
machinery. The electricity supply company keep mini-generators for them
and whilst they have sufficient in the case that a block or a barrio is
knocked out, there are nowhere near enough for the whole capital city,
let alone the rest of the country. Fortunately, as of last night, only
one or two districts within the capital were still without power and
most places got their electricity restored within six to seven hours.
I've not (yet) heard of any fatalities resulting from the outage.
On Mon, 17 Jun 2019 21:36:32 +0100, Harry Bloomfield wrote:
Only 3.1 GW.
Maybe but as there are 20 x 155 MW turbines one dropping off line
only adds 8 MW (5%) to all the others. Not a great overload per
Much more likely is a domino effect in the distribution. For some
reason the Yacyreta hydro station drops off the grid. The in balance
of generation and demand causes the frequency to fall and the
automatics start tripping things off to load shed. But get a bit
Something similar happened in Ontario and the NE & Mid Western US in
And closer to home in 2008 when the grid lost 1.5 GW when Longannet
and Sizewell B went off line within minutes of each other. Quite
large areas of the country lost power.
On Monday, 17 June 2019 21:07:41 UTC+1, ARW wrote:
Most ofargentina/Brasil/Paraguay electricity comes from here:-
Plus another I can't remember the name of.
Probably some issue here.
ISTR there is the world's longest DC power links to them. Might be something to do with it
This sort of catastrophic failure happened in the US some years ago when a
lot of the Eastern Seaboard was load shed as sub station after substation
got overloaded due to not very smart software in control.
I'm sure this problem can happen anywhere there is a grid.
This newsgroup posting comes to you directly from...
We lived near Detroit at the time, and it happened one afternoon.
Suddenly everything went silent, for four days. And being in
summer, it was hot and humid. But we got through it. They said it was
caused by a squirrel.
It is an enormous country: our popular mapping systems don't really do
that justice and when the country became established its founders
realised it was going to be very hard to defend it (mainly from the
indigenous people who lived there before the Spanish came, and later,
the neighbours in Chile, Bolivia and Paraguay) The notorious presidency
of General Roca at the end of the nineteenth century is testament to
that. So they encouraged immigration from Europe to boost the population
to make the country more resilient. The Germans mainly went west, the
Welsh to the mid-south and a surprising number of English and Scottish
to the deep south. Spanish and particularly Italians landed in Buenos
Aires in huge numbers and either settled there or radiated outwards.
Apart from a few oddities and historical accidents such as the town
called Villa General Belgrano which is almost entirely populated by
decedents of the crew of the Graf Spee, that's the way it is. And,
underpopulated as it is, without immigration the whole place would
probably be called Chile today.
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