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1.媒體來源:

http://reneweconomy.com.au

2.完整新聞標題:

Tesla big battery outsmarts lumbering coal units after Loy Yang trips

3.完整新聞內文:

The Tesla big battery is having a big impact on Australia’s electricity
market, far beyond the South Australia grid where it was expected to time
shift a small amount of wind energy and provide network services and
emergency back-up in case of a major problem.

Last Thursday, one of the biggest coal units in Australia, Loy Yang A 3,
tripped without warning at 1.59am, with the sudden loss of 560MW and causing
a slump in frequency on the network.

What happened next has stunned electricity industry insiders and given food
for thought over the near to medium term future of the grid, such was the
rapid response of the Tesla big battery to an event that happened nearly
1,000km away.

Even before the Loy Yang A unit had finished tripping, the 100MW/129MWh had
responded, injecting 7.3MW into the network to help arrest a slump in
frequency that had fallen below 49.80Hertz.

Data from AEMO (and gathered above by Dylan McConnell from the Climate and
Energy College) shows that the Tesla big battery responded four seconds ahead
of the generator contracted at that time to provide FCAS (frequency control
and ancillary services), the Gladstone coal generator in Queensland.

HPR frequeny fig 2 copy

But in reality, the response from the Tesla big battery was even quicker than
that – in milliseconds – but too fast for the AEMO data to record.

Importantly, by the time that the contracted Gladstone coal unit had gotten
out of bed and put its socks on so it can inject more into the grid – it is
paid to respond in six seconds – the fall in frequency had already been
arrested and was being reversed.

Gladstone injected more than Tesla did back into the grid, and took the
frequency back up to its normal levels of 50Hz, but by then Tesla had already
put its gun back in its holster and had wandered into the bar for a glass of
milk.

So why did the Tesla big battery respond when not contracted?

One reason is because it can, and so it did.

The other reason is less clear, but more intriguing. It is contracted to
provide such grid services by the South Australia government.

The details of that contract are not released, but it wouldn’t surprise if
that contract allowed, or even encouraged, such intervention – just to rub
in the message about a cleaner, faster, smarter grid to the technology
dinosaurs in the eastern states.

Marvellous stuff.

This is just the latest in a series of interventions since the Tesla big
battery was officially opened in early December.

hornsdale power reserve copy

It has provided, at the request of AEMO, 70MW of back-up to help meet a
critical peak in the day before its opening, entered into the FCAS market, as
we highlight here, and discharged at full capacity.

Over the weekend was again illustrating its rapid fire charging and
discharging. (See graph above). The rapid re-bidding is likely to change the
market forever, particularly when the 5-minute settlement rule finally comes
into effect in 2021.

It should be an interesting 2018.

Note: The Tesla big battery is known to the grid as the Hornsdale Power
Reserve, as it is located near the Hornsdale wind farm in South Australia,
also owned and operated by Neoen. Hence the acronym HPR in such tables.

4.完整新聞連結 (或短網址):

https://goo.gl/pvGZmp


簡單的說，澳洲上周四在1:59有個燃煤火力發電機組無預警掛掉

讓電網一下子就損失了560MW的功率

一般來說，這會使得整個電網的頻率驟降，不處理的話會使整個電網崩潰

台灣剛遇到的8/15大停電就是如此

台灣當時為了不讓整個電網崩潰於是採取直接關閉某些地區的電力供應

澳洲這次的情況很類似

而澳洲火力機組跳掉的同時



這個100MW的電池，原本是用來當作風力發電的儲能設施

如果沒有Tesla這個100MW的電池組，澳洲會不會跟台灣一樣大停電不曉得

但這已經說明了有這種儲能系統除了可用來當作風力跟太陽能的儲能外

對於整個電網的穩定也是很有幫助的

台灣要發展綠能，也應該同時考慮建置類似的儲能系統才是



詳細的數字跟資料就請看原文連結

註：下列圖表中的HPR是Tesla 電池組的代號
https://i.imgur.com/CZP3lU7.jpg

https://i.imgur.com/aI4OU8p.jpg

https://i.imgur.com/RhSFCPR.jpg

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