[time-nuts] Line Frequeny Stablity

[Hal Murray]

preilley_454 at comcast.net said:
> When I installed power plants in the 1970's they has a special "clock"  that
> showed the cumulative error in terms of clock time.

How big were the grids back then?

What was the typical range of error over a day or month?


> If the generator ran a little too fast the clock would move forward.    As
> the operator observed the clock moving away from zero he would reduce the
> plant's  power and the clock would move backward toward zero.  ...

Does that operator control a single generator or a whole grid?

Does having a human in the loop help the control loop stability?



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