I work in the distribution grid protection equipment business, and our products include measurement capability up to the 16th harmonic for both the voltage and current measurements made on the line. For classic grid protection primarily the fundamental and second harmonic are used, but the higher harmonics are being used more now for high impedance arc fault detection (think California wildfires) and understanding the operating behavior of distributed generation resources.
The frequency response characteristics of all the related transformers certainly aren't linear, but most of these algorithms are looking for the presence of higher harmonic content rather than trying to measure specific magnitude values for them. So yes, higher frequency content can certainly be on the grid at least at the distribution level, but in a residential setting much of the harmonic content present will be caused by the conducted emissions from local devices through their power supplies. Chris On Mon, Jan 24, 2022 at 12:04 AM Hal Murray <[email protected]> wrote: > > [email protected] said: > > If the transformer works well up to 600Hz, isn???t that high enough to > capture > > anything that actually is grid related (as opposed to local to your home > / > > neighborhood )? > > What's the frequency response of the transformer > on the pole outside my house > at the nearby substation > at a big substation > > I remember that back in the days of tubes where audio amplifiers had a > transformer to drive a speaker, there was a lot of iron in the > transformer. I > think that was for the low frequency. I don't remember anything about > high > frequencies. Was that because there wasn't a problem or I wasn't paying > attention? > > What is the frequency response of a wall wart size transformer? > > --------- > > Is the frequency response of transmission lines interesting? > > -- > These are my opinions. I hate spam. > > > _______________________________________________ > time-nuts mailing list -- [email protected] -- To unsubscribe send > an email to [email protected] > To unsubscribe, go to and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] -- To unsubscribe send an email to [email protected] To unsubscribe, go to and follow the instructions there.
