Quote:
Originally Posted by Alex KL-1
... in the reality, the mean frequency in practice is slight > 60Hz (or 50 for the 50Hz countries) in the long run, even with national operators dictating near 60Hz for entire interconnected system (for example, here in Brazil)
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What is the source of this claim? Power systems (in the U.S., at least) have historically been regulated to produce correct time of day with motor driven clocks, as far as I know. I cannot think of a reason to run fast on average.
Here are some actual measurements from a place in the Netherlands:
https://wwwhome.ewi.utwente.nl/~ptde...20using%20them.
However, the freedom from transients, dropped cycles, etc., has not necessarily improved over time.