Wacky Weekend: NERC to relax power grid frequency strictures

Owen DeLong owen at delong.com
Sat Jun 25 14:04:02 CDT 2011


On Jun 25, 2011, at 11:03 AM, Jason Roysdon wrote:

> 
> On 06/25/2011 07:49 AM, Jay Ashworth wrote:
>> ----- Original Message -----
>>> From: "Jussi Peltola" <pelzi at pelzi.net>
>> 
>>> 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.
>> 
>> Perhaps I read the piece incorrectly, but it certainly sounded to *me* like
>> the part that was hard was not hitting 60.00, but *staying in sync with
>> others*...
>> 
>> Cheers,
>> -- jra
> 
> Generators all stay in sync.  Generator owners have expensive devices
> that sync the phase before the generator is connected to the grid.  Once
> a generator is connected to the gird, it will stay in sync - in fact
> that is why they have the expensive devices to make sure that they are
> in sync before they connect them, as if they are not, it will instantly
> jump to being in sync, which may destroy the generator.
> 
As a matter of fact, it may destroy the generator, the housing, the building,
the damn, and more. An out-of-sync generator becomes a motor until it is
in sync. lt can be a graphic and dramatic event.

Owen





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