[GTALUG] NTP's Fate Hinges On 'Father Time' - InformationWeek

R. Russell Reiter rreiter91 at gmail.com
Wed Mar 25 12:09:42 UTC 2015


On March 24, 2015 4:24:31 PM EDT, Lennart Sorensen <lsorense at csclub.uwaterloo.ca> wrote:
>On Sun, Mar 15, 2015 at 10:36:10AM -0400, Stewart C. Russell wrote:
>> Absolutely. At the solar plant I audited the other week, I was amused
>to
>> see that the great big huge expensive grid protection and control box
>> was controlled via GPS sync. It's the cheapest way to maintain grid
>> frequency at the far end of the grid. And I mean /far/; 5 hours west
>of
>> Thunder Bay

Sort of timing related; here's a neat desktop demonstration video of time honored lightbulb syncing of a polyphase AC grid.

https://m.youtube.com/watch?v=RGPCIypib5Q

>> 
>> > My finance client's use ptp not ntp.
>> 
>> Is PTP particularly hard to use? It looks like an ISO standard, so
>will
>> likely be fiddly but complete.
>
>IEEE 1588 I believe.  No idea if there is an ISO standard for it.
>
>-- 
>Len Sorensen
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