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129MWhr Battery Doing its Job Down Under.

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Impressive so far,

https://www.dailymail.co.uk/sciencetech/article-8082841/Elon-Musks-Tesla-battery-farm-saved-South-Australia-116-MILLION.html


Z.
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    davezawadi:

    No Z  it is nothing like that simple. Let us look at this properly, using your car as an example. You are happily driving along a flat road at a constant speed and you come to a hill. More power is now needed from the engine to keep up the speed. Your engine however cannot speed up instantly because it's fuel supply is limited. To instantly change RPM takes infinite power, so it takes several seconds, as you do when you push the accelerator, to speed up. This is exactly the same as the grid, which has limited transient power available. It is true that a battery system could pretty much instantly add this power but it needs to know when to do it and how much which it gets from the frequency  change. If the frequency didn't change the battery would not supply extra power..... That is how control systems work, they need an error signal to respond.




    The Tesla Australian battery system can respond in a cycle or two as it is virtually instantaneous in operation when required to act. It has electronic controls so is very fast to detect and respond. No accelerators or mechanical regulators involved at all. The solution is not to load the generating system fully, allow some reserve power for short duration high demand. Or, have a very accurate independent master clock system that all generators synchronise to. 


    What type of system is used nowadays to synchronise generators? A monitor and respond type of system that can go wobbly if the frequency varies rapidly and never stabilises, trying to play catch up?


    Z.

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  • 0

    davezawadi:

    No Z  it is nothing like that simple. Let us look at this properly, using your car as an example. You are happily driving along a flat road at a constant speed and you come to a hill. More power is now needed from the engine to keep up the speed. Your engine however cannot speed up instantly because it's fuel supply is limited. To instantly change RPM takes infinite power, so it takes several seconds, as you do when you push the accelerator, to speed up. This is exactly the same as the grid, which has limited transient power available. It is true that a battery system could pretty much instantly add this power but it needs to know when to do it and how much which it gets from the frequency  change. If the frequency didn't change the battery would not supply extra power..... That is how control systems work, they need an error signal to respond.




    The Tesla Australian battery system can respond in a cycle or two as it is virtually instantaneous in operation when required to act. It has electronic controls so is very fast to detect and respond. No accelerators or mechanical regulators involved at all. The solution is not to load the generating system fully, allow some reserve power for short duration high demand. Or, have a very accurate independent master clock system that all generators synchronise to. 


    What type of system is used nowadays to synchronise generators? A monitor and respond type of system that can go wobbly if the frequency varies rapidly and never stabilises, trying to play catch up?


    Z.

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