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flywheel to keep the Hz up to prevent blackouts

jcm
I suppose it had to happen these ugly blights on the tops of mountains can now cause blackouts ,  yesterday as I look around mountains (not much breeze) one or two turbines try to turn a little then fall back exausted. Not sure how this flywheel works ? , although it must take a lot of power to get it rotating. Glad to hear that they are now keeping Kilroot power station open (it was running  coal / oil and owned by the AES Corporation). In 2019 it was sold to a subsidiary of Energetický a průmyslový holding. They are going to converting it to gas.    


www.theguardian.com/.../giant-flywheel-project-in-scotland-could-prevent-uk-blackouts-energy



EXCLUSIVE. £1MILLION was paid out to wind farm owners to turn off their turbines and stop generating electricity for Northern Ireland's power grid for 20 months.7 hours ago


And in january:-

Wind farms paid up to £3 million per day to switch off turbineswww.telegraph.co.uk › News › Politics

19 Jan 2020 - Wind farms were paid up to £3 million per day to switch off their turbines and not produce electricity last week, The Telegraph can disclose. ... the additional expense of a £1 billion interconnector that is itself proving unreliable.

No further comment needed. Regards

jcm
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    This is all assuming that the flywheel is connected to a synchronous generator but the reality is that most flywheel energy storage uses the stored energy to generate DC which then uses inverters to get the desired frequency. Flywheel storage sits alongside Batteries and Supercapacitors as the storage of choice for small to medium sized installations. The US Navy have tested flywheel storage as a source for energy weapons and aircraft carrier catapults, though I don't know how successful the experiments were (and am unlikely to find out....)

    The "giant flywheel project" tag is misleading as it is inconceivable that a single flywheel would be used. Even ignoring the mass, stresses, etc. that would create so many problems there is the issue that the whole system needs to be shut down if any maintenance is required. So much simpler to have a string of flywheels and take one out for maintenance as and when required.
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    This is all assuming that the flywheel is connected to a synchronous generator but the reality is that most flywheel energy storage uses the stored energy to generate DC which then uses inverters to get the desired frequency. Flywheel storage sits alongside Batteries and Supercapacitors as the storage of choice for small to medium sized installations. The US Navy have tested flywheel storage as a source for energy weapons and aircraft carrier catapults, though I don't know how successful the experiments were (and am unlikely to find out....)

    The "giant flywheel project" tag is misleading as it is inconceivable that a single flywheel would be used. Even ignoring the mass, stresses, etc. that would create so many problems there is the issue that the whole system needs to be shut down if any maintenance is required. So much simpler to have a string of flywheels and take one out for maintenance as and when required.
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