Big storm and no power in SA

**Eevo** · 18th November 2017, 02:03 AM

Originally Posted by bee utey

Why? Reliability comes first, cost spread over the whole summer won't amount to much.

sorry, i didnt mean it like that.
they will only turn on when we're close to running out which puts the sstem stability at risk whihc i would avoid.

**Eevo** · 18th November 2017, 02:04 AM

Originally Posted by bee utey

SA has been consistently exporting power to Victoria since the big gas generators negotiated a new contract for gas prices, back in about July. No idea how long this will last once the wind drops. Daily and weekly interconnector flows available here:

NEM: V-SA Interconnector Report

thats a cool report.

**bee utey** · 18th November 2017, 09:46 AM

Originally Posted by Eevo

sorry, i didnt mean it like that.
they will only turn on when we're close to running out which puts the sstem stability at risk whihc i would avoid.

I'm not sure why they would add to instability, they're not 50 year old piston engine units mounted on a 4WD Bedford chassis. They'd be switched on well before the forecast peak load hits.

**Homestar** · 18th November 2017, 09:54 AM

Originally Posted by bee utey

SA has been consistently exporting power to Victoria since the big gas generators negotiated a new contract for gas prices, back in about July. No idea how long this will last once the wind drops. Daily and weekly interconnector flows available here:

NEM: V-SA Interconnector Report

Yes, but we were talking peak periods during the Summer, not just recently. I don't think anyone really knows what's going to happen yet - even those that control these things, I hope it pans out for everyone to be honest, in a country like this energy security shouldn't be this hard.

**Gordie** · 18th November 2017, 10:23 AM

Originally Posted by Tote

So it should only take a couple of days to get the Bedford into town then

( having driven a TK bedford)
Regards,
tote

Speaking of power packs on the back of bedfords...just saw the ACDC video for 'long way to the top' on rage...band on back of TK Bedford driven around Melbourne CBD...very cool...go TK.

**bee utey** · 18th November 2017, 10:24 AM

Originally Posted by Homestar

Yes, but we were talking peak periods during the Summer, not just recently. I don't think anyone really knows what's going to happen yet - even those that control these things, I hope it pans out for everyone to be honest, in a country like this energy security shouldn't be this hard.

All true but some of SA's gas generators were being left switched off last summer due to a lack of contracted gas supplies. If the gas supply is guaranteed this summer at sensible prices then there is unlikely to be a shortage of supply, even if Victoria is running short and can't supply via the interconnectors. And that doesn't include "negawatts", aka demand management, paying selected customers to reduce consumption in peak times, instead of being unceremoniously load shed without notice.

**Eevo** · 18th November 2017, 11:27 AM

Originally Posted by bee utey

I'm not sure why they would add to instability, they're not 50 year old piston engine units mounted on a 4WD Bedford chassis. They'd be switched on well before the forecast peak load hits.

wrong wording. they dont add to the instability.
they only run when the system is maxed out and zero reserve available.

**bee utey** · 18th November 2017, 11:46 AM

Originally Posted by Eevo

wrong wording. they dont add to the instability.
they only run when the system is maxed out and zero reserve available.

So you think the managers of these generators will only turn them on when its already too late? They won't heed consumption forecasts? Hint: these are part of the reserve at around 275MW.

**Homestar** · 18th November 2017, 01:56 PM

Originally Posted by Eevo

sorry, i didnt mean it like that.
they will only turn on when we're close to running out which puts the sstem stability at risk whihc i would avoid.

It's a very quick process to bring these on line, and even if they did bring them in late (which they won't need to as if there's a sudden hole in the generation, that shiny new battery will be doing its job and give them time to bring them in while the frequency is still stable) then they can still parallel them to an unstable grid which would recover as soon as the output breaker closes and they wind in a few MW from it. They'll work well.

**Eevo** · 28th November 2017, 06:53 AM

more lies from the powers that be?

behind paywall

SOUTH Australia remains on high alert for summer blackouts, as authorities reveal they have slashed the amount of power that can be relied on from the emergency diesel generators.

An independent review of the national grid operator’s plan for summer warns the risk of rolling blackouts will be higher in the coming months than it has been in recent years. But it found the power outages would have been even more likely without the initiatives put in place, including the State Government’s energy plan.
The Australian Energy Market Operator will today release its summer readiness report, which outlines how the grid is prepared to cope with high demand.
AEMO chief executive Audrey Zibelman said she was “confident that we have taken all the necessary actions — and then some — to make sure we are ready”.

“We now have a range of dispatchable resources that can be used to strategically support the market as required, including battery storage, diesel generation and demand resources,” she said.
AEMO was working closely with the Bureau of Meteorology to improve forecasts and data in the report shows there was a higher likelihood of heatwaves during summer than in most years. It also showed Victoria and SA had the highest likelihood of a greater-than-normal number of hot days, and a risk of longer (at least five days) heatwaves.
Above-average maximum temperatures were also considered likely with the highest chances of warm days in Darwin, Hobart, Melbourne and Adelaide.

The report confirms there would be 444MW of extra capacity in addition to the Tesla battery.
But while the State Government claimed that the diesel generators would provide SA with an additional 276MW of electricity generation, AEMO was only banking on 170MW.
The report considers 170MW to be the firm minimum, allowing for one or two units to be unavailable with a likely maximum of around 225 MW if all units were operational on a heatwave day.

“All generation is ‘derated’ to some degree from its nameplate capacity, to allow for loss of generating capacity when it operates in very hot weather,” the report states.
The Advertiser revealed in August the temporary generators were not able to run at full power when the temperature was over 40C.
The AEMO’s summer readiness plan, released as part of the full report today, found the risk of not having enough power remained high in SA and Victoria.
“The supply/demand situation is finely balanced and failure of a single component will increase the risk that AEMO will need to shed load to maintain the power system within the requirements of the security standard,” the review found.
It stated that “even if all the summer ready initiatives were completed successfully and on time” — which was on track — AEMO would probably have insufficient resources to cover both demand and reserves if a single component of the system failed during peak demand.

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