Wacky Weekend: NERC to relax power grid frequency strictures

Paul Graydon paul at paulgraydon.co.uk
Sat Jun 25 18:43:53 CDT 2011


On 6/25/2011 12:32 PM, Seth Mattinen wrote:
> On 6/25/2011 15:12, Leo Bicknell wrote:
>> I have never seen a generator that syncs to the utility for live, no
>> break transfer.  I'm sure such a thing exists, but that sounds crazy
>> dangerous to me.  Generators sync to each other, not the utility.
>>
> Most of these come in open, delayed, or closed transition models:
> http://www.gedigitalenergy.com/powerquality/ATSHome.htm
>
> For open and closed transitions you'll most certainly want to sync to
> utility to transition between the two. For the delayed transition model
> it'll stop at the intermediate "open" point for a configurable amount of
> time during which the load is disconnected from everything (i.e. let all
> the motors spin down first).
>
> ~Seth
>
Take a guess what the datacenter our equipment is currently hosted in 
uses.  Yet another reason to be glad of a datacenter move that's coming up.




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