Time passed more slowly over the Easter holiday
Homeowners left scratching their heads over lost time during the Easter weekend shouldn’t be alarmed – you’re not losing it.
Homeowners left scratching their heads over lost time during the Easter weekend shouldn’t be alarmed – you’re not losing it.
It was not the household electric clock, but rather the main control clock Yukon Energy uses to ensure power generation at the Whitehorse Rapids Dam isn’t too much or two little, Guy Morgan, lead hand for the system control centre, explained this morning.
Morgan said staff at the control centre synchronize the time between a sophisticated but regular electric wall clock fed by a dead-accurate satellite signal as a means of keeping power generation in check.
When the time on the two clocks drifts apart by more than five seconds or 10 either way, staff know there is either more power being generated than consumed, or not enough, he explained.
Morgan said if the electric clock gets ahead of the satellite clock, there’s too much power and generation is turned down, and if it falls behind, generation is turned up.
The control centre’s wall clock was running faster than the satellite clock over the last few days, so staff simply turned down generation as they normally do, without knowing there was an internal problem with their electric clock, he explained.
Morgan said when the generation was turned down, electric clocks that were plugged into the wall – alarm clocks, stove clocks, microwave clocks – all slowed down. The change was quite slow and unnoticeable until several minutes had been lost over a few days, he said.
Morgan said staff of the control centre finally figured out over the weekend there was an issue with their wall clock.
This particular management system, he said, has been in place since 1998 without any issues.
They’ve ordered a new wall clock, and are using an older one in its place in the meantime.

Seriously?
Apr 6, 2010 at 3:42 pm
I don’t understand how the amount being generated has anything to do with what happens to household electronics.
It would make more sense if the plant was generating at 55Hz versus 60Hz as some electronics will use the line frequency rather than integrated oscillators to set clocks.
Regardless, it shows YEC continues to be a bunch of bumbling oafs.