[Laser] Re: Lunar Eclipse

[Chuck Hast]

On 9/11/07, Charles Pooley <ckpooley at sbcglobal.net> wrote:
>   F1AVYopto aol.com wrote:
>
> All the alternators are mandatory synchronic because their electrical
> properties.
> They work like adjustable power generators (E>U) or synchronic motors (E<U) but their rotation speed defines strictetly their produced frequency and a
> shift in frequency a one to the others is impossible.
>   ------------------------------------------------------------------------------------
>   All the alternators are mandatory synchronic because their electrical
> properties.
> They work like adjustable power generators (E>U) or synchronic motors
>  (E<U) but their rotation speed defines strictetly their produced
>  frequency and a shift in frequency a one to the others is impossible.
>   ------------------------------------------------
>   This syncronicity business is interesting.  Synchronous relative to
>  what point in space?  Colorado USA, source of WWV?  Given that light
>  travels 833 km in 1/360 sec, it would not be suncronous from a different
>  viewpoint.
>
>   This would not be a problem if all power were geographically
>  concentrated and not spread over distances over 1000 km.
>
>       Charles Pooley
>     ckpooley at sbcglobal.net
>      microlaunchers(dot)com
The North American Power Grid consist of four grid interconnects:
Eastern
Western
Texas
Quebec
Each grid is composed of 10  Regional Reliability Councils, they all
report to the North American Electric Reliability Council or NERC.

All are interconnected and indeed ship power back and forth as
needed across the whole grid. I believe we even have interconnects
with Mexico now, though I am not sure on this one.

I did work with utilities back a few years ago and those that I worked
with were disciplined by NBS time, and indeed they were moving to
time disciplining using GPS as the common time source. Some had
WWVB receivers for time discipline, but I believe that most if not all
have moved to GPS as the time base, just like the telecomms
people. Every cell site has a GPS receiver for time discipline, as do
most if not all major data switching centers.

-- 
Chuck Hast  -- KP4DJT --
To paraphrase my flight instructor;
"the only dumb question is the one you DID NOT ask resulting in my going
out and having to identify your bits and pieces in the midst of torn
and twisted metal."