NANOG Digest, Vol 41, Issue 153

Mickey Fox mike at cmkconsulting.com
Sat Jun 25 09:05:19 CDT 2011


Failure to sync = dirty power and a horribly corrupted sine wave. A bit more
than watching an old microwave.

On Sat, Jun 25, 2011 at 7:00 AM, <nanog-request at nanog.org> wrote:

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> Today's Topics:
>
>   1. Wacky Weekend: NERC to relax power grid frequency strictures
>      (Jay Ashworth)
>   2. Re: Wacky Weekend: NERC to relax power grid frequency
>      strictures (Jussi Peltola)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 24 Jun 2011 18:29:14 -0400 (EDT)
> From: Jay Ashworth <jra at baylink.com>
> Subject: Wacky Weekend: NERC to relax power grid frequency strictures
> To: NANOG <nanog at nanog.org>
> Message-ID:
>        <23981692.56.1308954554440.JavaMail.root at benjamin.baylink.com>
> Content-Type: text/plain; charset=utf-8
>
> The North American Electric Reliability Council is planning to relax
> the standards for how closely power utilities must hold to 60.00Hz.
>
> Here's my absolute favorite quote of all time:
>
>  Tweaking the power grid's frequency is expensive and takes a lot of
> effort,
>  said Joe McClelland, head of electric reliability for the Federal Energy
>  Regulatory Commission.
>
>  "Is anyone using the grid to keep track of time?" McClelland said. "Let's
> see
>  if anyone complains if we eliminate it."
>
>
> http://hosted.ap.org/dynamic/stories/U/US_SCI_POWER_CLOCKS?SITE=AP&SECTION=HOME&TEMPLATE=DEFAULT
>
> I believe the answer to that question is contained here:
>
>  http://yarchive.net/car/rv/generator_synchronization.html [1]
>
> This is gonna be fun, no?
>
> Cheers,
> -- jra
> [1]Please, let's not start in on the source.[2]
> [2]No, really: *please*.  :-)
> --
> Jay R. Ashworth                  Baylink
> jra at baylink.com
> Designer                     The Things I Think                       RFC
> 2100
> Ashworth & Associates     http://baylink.pitas.com         2000 Land Rover
> DII
> St Petersburg FL USA      http://photo.imageinc.us             +1 727 647
> 1274
>
>
>
> ------------------------------
>
> Message: 2
> Date: Sat, 25 Jun 2011 07:32:41 +0300
> From: Jussi Peltola <pelzi at pelzi.net>
> Subject: Re: Wacky Weekend: NERC to relax power grid frequency
>        strictures
> To: nanog at nanog.org
> Message-ID: <20110625043241.GF25848 at pokute.pelzi.net>
> Content-Type: text/plain; charset=us-ascii
>
> On Fri, Jun 24, 2011 at 06:29:14PM -0400, Jay Ashworth wrote:
> > This is gonna be fun, no?
>
> If your definition of fun is spending a year watching an old microwave
> clock lose or gain a few minutes.
>
> I don't see how this has anything to do with syncing two generators. The
> grid is in sync, and if the frequency of the grid changes (as it does
> all the time) it will stay in sync. It has nothing to do with the
> absolute frequency.
>
>
>
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> End of NANOG Digest, Vol 41, Issue 153
> **************************************
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