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Power grid change may disrupt clocks
#1
Power grid change may disrupt clocks

June 25, 2011 12:29 AM
  • (AP) WASHINGTON (AP) — Our power supply has been so precise that we've set our clocks by it. But time may be running out on that idea.

    A yearlong experiment with the electric grid may make plug-in clocks and devices like coffeemakers with programmable timers run up to 20 minutes fast.

    The group that oversees the U.S. power grid is proposing a change that has the potential to disrupt electric clocks in schools, hospitals and other institutions, according to a company presentation obtained by The Associated Press. It may also mess with the timing of traffic lights, security systems, sprinklers and some personal computer software and hardware.

    ~snip~

    In the future, more use of renewable energy from the sun and wind will mean more variations in frequency on the grid, McClelland said. Solar and wind power can drop off the grid with momentary changes in weather. Correcting those deviations is expensive and requires instant back-up power to be always at the ready, he said.

    ~snip~

http://www.cbsnews.com/stories/2011/06/2...4275.shtml

“We do not believe any group of men adequate enough or wise enough to operate without scrutiny or without criticism. We know that the only way to avoid error is to detect it, that the only way to detect it is to be free to inquire. We know that in secrecy error undetected will flourish and subvert”.J Robert Oppenheimer.
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#2
WUWT article:

It hertz when you do that – power grid to stop regulating 60 Hz frequency

Posted on June 25, 2011 by Anthony Watts

Story submitted by Joe Ryan
  • The AP has released an “exclusive” story concerning the nationwide “experiment” that will be conducted on the US power grid. The experiment will relieve the power providers from the duty of regulating the frequency of power on the line.

    Normally the power stations condition their power to a frequency of 60 cycles a second, a frequency that many old clocks use to maintain their time. With the new standard, or lack of standard, these clocks will stop keeping time properly.

    But the problem is more than that.

    ~snip~

article link
“We do not believe any group of men adequate enough or wise enough to operate without scrutiny or without criticism. We know that the only way to avoid error is to detect it, that the only way to detect it is to be free to inquire. We know that in secrecy error undetected will flourish and subvert”.J Robert Oppenheimer.
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