Power Electric
Posted June 5, 2008
By admin
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How phases of electric voltages coming from different power plants is synchronized?
Before distributing electric power to consumers?
"Then when the phases match they throw the switch"
I doubt that this approach can work.
Before generatior is disonnected the phase in the circuit is that of open-end standing wave. When they throw the switch, the phase becomes that of a wave propagating from generaotor to consumer. At 60Hz 1radian of phase is about 1000km of transimission line.
A very astute question. Not many people realize that this could cause some real problems.
All they have to do is watch the phase of the power as they're bringing a generator (or plant) on line. They can adjust the generator speed slightly to get the phase right. Then when the phases match they throw the switch.
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