The old time (stone age) method of setting the phase of a power generator was easy: Get an ordinary light bulb and connect it between the grid and your generator, Adjust the phase of your generator until the bulb goes dim. When the bulb is 100% dead out then flip the switch and connect the load. They had it a lot easier before there were computers and good instruments.
On Sat, Jul 27, 2013 at 2:52 PM, Bob Camp <[email protected]> wrote: > Hi > > The guys who put up the original papers were from Quebec Hydro. Their > issue was trying to set things up independent of the grid and dispatch > power to where ever it was needed. Once they demonstrated it was possible a > lot of other people became interested. Oddly enough at dinner I brought up > the possibility of using Loran-C to them. Their commit was "have you ever > tried to get 100 KHz past the field of a hydro station --- no way!!!". > Actually the last part of it was in French, but that's as close as I an get > …. > > Bob > > On Jul 27, 2013, at 4:10 PM, Bob Stewart <[email protected]> wrote: > > > But wouldn't it be easier to set phase if they had a known, good > frequency? Oh. Frequency isn't the issue, is it? If you have to supply > to the west coast for a few hours and then plug into the east coast to > purchase power, you might have to do a large phase shift between the two. > And after some arbitrary timeframe doing still more bouncing around you > could be off in frequency as measured locally in the long term. > > > > This idea just hit me because the Tymeter uses a synchronous clock > drive. And giving it some thought, I guess it's not that big a deal if you > start with a cheap UPS and a good clock. > > > > Bob > > > > > > > > > > > >> ________________________________ > >> From: Bob Camp <[email protected]> > >> To: Discussion of precise time and frequency measurement < > [email protected]> > >> Sent: Saturday, July 27, 2013 2:42 PM > >> Subject: Re: [time-nuts] GPS locked 60Hz? > >> > >> > >> Hi > >> > >> If you go back into the Frequency Control Symposium papers from the > 1980's there are several of them from the power line people on using GPS to > track 60 Hz. They have kept at it ever since. Their main interest is in > tracking phase across a large network, rather than locking up generators > (for accurate time). Knowing phase lets them better balance power flow(s) > and thus save money. > >> > >> Bob > >> > >> On Jul 27, 2013, at 3:11 PM, Tim Shoppa <[email protected]> wrote: > >> > >>> http://leapsecond.com/pages/atomic-nixie/ shows a KVARZ CH1-75 Active > >>> Hydrogen Maser (5 MHz) through a HP 3325B synthesizer (60 Hz) through > a HP > >>> 6827A bipolar power supply (100 VAC) to generate a 60 Hz mains. > >>> > >>> At http://leapsecond.com/pages/mains/ he also shows the 60Hz grid > >>> meandering forward and back plus or minus 5 or 10 seconds over a month > in > >>> 2004. > >>> > >>> > >>> On Sat, Jul 27, 2013 at 1:54 PM, Bob Stewart <[email protected]> wrote: > >>> > >>>> My Tymeter just clacked over to 50 minutes after, and I had a sudden > >>>> vision of GPS locking its input to 60 Hz, like in the good old days > when > >>>> the power companies cared about frequency. =) Has anyone actually > gone > >>>> that far in their time-madness? > >>>> > >>>> Bob - AE6RV > >>>> _______________________________________________ > >>>> time-nuts mailing list -- [email protected] > >>>> To unsubscribe, go to > >>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >>>> and follow the instructions there. > >>>> > >>> _______________________________________________ > >>> time-nuts mailing list -- [email protected] > >>> To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >>> and follow the instructions there. > >> > >> _______________________________________________ > >> time-nuts mailing list -- [email protected] > >> To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >> and follow the instructions there. > >> > >> > >> > > _______________________________________________ > > time-nuts mailing list -- [email protected] > > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > -- Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
