[time-nuts] Re: Power grid logging during the eclipse?

[Azelio Boriani]

PV generators?

On Wed, Apr 10, 2024 at 8:56 AM willl will via time-nuts <
time-nuts at lists.febo.com> wrote:

> I do see the same here in CA:
>
> https://github.com/will127534/RaspberryPiAtomicNixieClock/assets/6110733/988c5938-0da5-4e77-88c8-934de2390b42
> The time scale is in UTC
>
> What might be the cause?
>
> Jeremy Nichols via time-nuts <time-nuts at lists.febo.com> 於 2024年4月9日 週二
> 上午4:49寫道：
>
> > I have a monitor at my home in California. It is monitored by a
> university
> > in Kentucky. They watch the frequency nationwide. I can ask them if they
> > saw anything strange during the eclipse.
> >
> > I also have a Ting monitor that reports to me weekly. It looks for
> voltage
> > spikes, dropouts, etc.  I’ll see what the next report looks like.
> >
> > Jeremy
> >
> >
> > On Mon, Apr 8, 2024 at 8:47 PM Scott Newell via time-nuts <
> > time-nuts at lists.febo.com> wrote:
> >
> > > Was anyone logging the eastern US power grid today during the
> > > eclipse? I've got some pretty simple hardware at home and about 50
> > > miles away at work. Both are showing a bit of weirdness today around
> > > 19:00 UTC. I'd be curious to see if anyone else sees the same. (I'll
> > > email and ask the UTK power grid group tomorrow.)
> > >
> > > These are simple low resolution graphs plotted by munin on 5 minute
> > > intervals. The logs have far more sample points, but I'll have to
> > > find time to run gnuplot over them for more details.
> > >
> > > Accumulated error in cycles (note dip around 19:00 UTC):
> > > https://www.n5tnl.com/time/eclipse_2024/line_cycles-day.png
> > >
> > > Frequency averaged over 1 hour:
> > > https://www.n5tnl.com/time/eclipse_2024/line_freq_1h-day.png
> > >
> > >
> > > --
> > > newell  N5TNL
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