[time-nuts] Re: Mains frequency in Europe last night

[dschuecker]

Hi,

it is probably a data collection issue imho.

I downloaded the data from gridwatch and compared the frequency with my 
own collection. Be aware that the UK frequency is not the same as the 
ENTSO-E frequency. My data is from ENTSO-E.

See enclosed graphics. Upper part is the demand in the UK, Mo 8pm to Tue 
8am in blue, Tue 8pm to Wed 8am in orange. You see the high demand 
changes in the relevant time interval.

This is albeit not reflected in the frequency in the UK, see lower part.

But: The frequency changes in the UKÂ  in the first half of the night 
Tue-Wed are a lot higher (std 0.0851 Hz)  than in the second half  ( std 
0.0633 ) or in the entire night Mo-Tue (0.0601 Hz). Maybe this is an 
indication that they where fighting  something last night that they did 
not fight the night before and this resulted in the demand peaks. Maybe 
there was a production peak due to a North-Sea storm.  They had to get 
rid of the power and started all their pumped storage power stations, 
which led to the peak. But this is only my guess. I have no idea about 
the number of UK pumped storage power stations or how to get North-Sea 
wind data.

Another interesting detail: During nighttime the ENTSO-E frequency seems 
to follow a plan. The frequency is similar during the two nights.  That 
is not true for the UK freq. .

Cheers

Detlef

Am 13.12.2022 um 14:28 schrieb Poul-Henning Kamp via time-nuts:
> --------
> Dr. David Kirkby via time-nuts writes:
>
>> Some thought it might be a data collection issue with the site. I wonder if
>> anyone who monitors the mains frequency saw any significant changes, as one
>> would expect if there were suddenly large jumps in demand.
> The "pumped storage" curve seems to correlate ?
>
> (I'm on the Nordic side of the divide and my frequency logging does not look
> out of the ordinary.)
>
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