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Mains frequency

Kelly Marie Angel
Just checked the dynamic demand site and the frequency was down to around49.7 cycles almost down to the lower legal limit never seen that before
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    Denis McMahon:





    Posted by Simon Barker on Feb 14, 2020 8:13 am



    Or build big battery banks around the country.  Spare power from renewables can be stored.  Then when the generations drops too low, the batteries can top the grid up for long enough to bring backup generators on line.




    On a grid system powered by solar power we would certainly lose the stability provided by inertia. However, this is hypothetical, since I cannot envisage such systems. Solar panels are not very clever at night. Also bear in mind that nuclear power, though not strictly renewable, is virtually carbon free and is going to be with us for a good while yet. It is going to be some time before we worry about losing the stability of inertia.

     



     

    Not hypothetical at all.  South Australia already has a huge battery bank, and it appears to be doing a good job. https://reneweconomy.com.au/how-the-tesla-big-battery-kept-the-lights-on-in-south-australia-20393/ 


    It isn't intended to run the whole grid for hours on end.  It is there to store enough power to handle any short-term peak load, or sudden losses of supply.
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  • 0

    Denis McMahon:





    Posted by Simon Barker on Feb 14, 2020 8:13 am



    Or build big battery banks around the country.  Spare power from renewables can be stored.  Then when the generations drops too low, the batteries can top the grid up for long enough to bring backup generators on line.




    On a grid system powered by solar power we would certainly lose the stability provided by inertia. However, this is hypothetical, since I cannot envisage such systems. Solar panels are not very clever at night. Also bear in mind that nuclear power, though not strictly renewable, is virtually carbon free and is going to be with us for a good while yet. It is going to be some time before we worry about losing the stability of inertia.

     



     

    Not hypothetical at all.  South Australia already has a huge battery bank, and it appears to be doing a good job. https://reneweconomy.com.au/how-the-tesla-big-battery-kept-the-lights-on-in-south-australia-20393/ 


    It isn't intended to run the whole grid for hours on end.  It is there to store enough power to handle any short-term peak load, or sudden losses of supply.
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