[time-nuts] 60hz disciplined watch

Jim Lux jimlux at earthlink.net
Wed Apr 20 17:02:33 UTC 2011


On 4/20/11 9:44 AM, Kasper Pedersen wrote:
>
> The mainland Europe grid (which you are not on, I know..) looks like this:
>
> http://n1.taur.dk/grid/plt.png
> http://n1.taur.dk/grid/pltw.png (very large with grid)
>
> y axis is phase in seconds, x axis is time
>
> The plot is 130 days long, 60sec/130d= 5ppm
> but
> in that plot is also 5 days in a row where the frequency is 230ppm high.

What's that huge excursion between Christmas and New Years?  Is that a 
reflection of a big load or generation change during the week?




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