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From: "Michael F. Stemper" <michael.stemper@gmail.com>
Newsgroups: rec.arts.sf.written
Subject: Re: The insane progress nobody is talking about
Date: Tue, 25 Jun 2024 08:56:17 -0500
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On 20/06/2024 11.21, Paul S Person wrote:
> On Thu, 20 Jun 2024 02:59:25 GMT, Random <random@who.cares> wrote:

>> A conventional bulb's filament is not sensitive to AC voltage fluctionations,
>> where the conversion electronics is. My guess is that your wiring to that
>> light is causing voltage dips and is stressing the electronics in the LED bulb
>> base.
> 
> I've seen a similar claim about timers that actually count
> cycles-per-second: if those vary then the timer misperforms.

This isn't really an issue in North America. According to NERC[1], frequency in
the Eastern Interconnection (EI) is above 59.972 Hz 95% of the time. This is
99.95% of nominal frequency, or an error of 28 mHz.

If frequency sat that low for a 24 hour period (which it doesn't; frequency error
regularly crosses zero), it would be a loss of 40 seconds in a day.

As a matter of fact, a few years back, the EI had an ongoing problem with frequency
being high: 3 mHz fast as a sustained average over several years. This was considered
a significant enough issue to require an investigation[2].

If uncorrected, it would have caused clocks to gain over 4 seconds per day. This
led to regularly implementing Time Error Correction. In this case, that meant a
coordinated (across the EI) reduction in generation to reduce frequency until the
time error crossed zero again.

Four seconds error per day is considered a problem. If you live in North America,
you can count[3] on your analog clock.


[1] <https://www.nerc.com/comm/OC/RS%20Landing%20Page%20DL/Frequency%20Response%20Standard%20Resources/2020_FRAA_Draft_Report_Final_.pdf>, Table 1.1.
[2] <https://www.nerc.com/comm/OC/RS_Related_Resources/Persistent_High_Frequency_in_the_Eastern_Interconnection_-_FINAL_020921.pdf>
[3] Sorry!

-- 
Michael F. Stemper
This sentence no verb.