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Nevelyn Black's picture
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Nevelyn Black is an independent writer with a background in broadcast and a keen interest in renewable energy.  In the last few years, she transitioned from celebrity interviews and film shoots...

  • Member since 2017
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  • Aug 13, 2019

Could energy storage have prevented Friday’s major blackout in the UK?  UK leader in energy storage, Anesco, certainly believes so.  “It would be easy for National Grid to write this incident off as a fluke event, but they have actually been aware of this potential issue for many years” said Anesco Executive Chairman Steve Shine.  Is the solution storage?  Is it that simple?

Christian Payerl's picture
Christian Payerl on Aug 15, 2019

I am sure National Grid will do an investigation what was the main cause, but as it was reported, it was a typical loss of power generation caused by a fault event, which of course caused a frequency drop. Most likely this Rate of Change of Frequency (RoCoF) was to big, which resulted in additional loss of power generation. Even so battery storage solutions may be a good support to get the frequency back (with fast frequency respons FFR and or primary frequency control), battery storage solutions are today NOT able to provide the inertia respons needed to limit the nadir of the frequency. The reason for that is NOT the possible response time of the converters, BUT simple the need for measuring the frequency quick  and precise enough. During a fault you may loose one phase and/or you will get a lot of harmonics as well as phase angle jumps, which makes a measurement below 150 ms impossible. The really best solution is providing synchronous inertia response from synchronous generation OR synchronous condensers.

Thats the reason why we will see a development were synchronouse condensers will be linked with different converter technologies such as battery storage, HVDC links, STATCOM´s and eventually wind/solar converters. Were the rotating machine will provide the inertia and short circuit contribution and the power electronics the quick MVArs and MW´s, which are helpful to regulate the frequency and the voltage back to usual.  

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Thank Nevelyn for the Post!
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