Timeline for Why do power grids tend to operate at low frequencies like 60 Hz and 50 Hz?
Current License: CC BY-SA 4.0
9 events
| when toggle format | what | by | license | comment | |
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| Dec 17, 2020 at 13:35 | comment | added | TooTea | @PeterMortensen Not really. Even at 50-60 Hz, the skin depth of copper or aluminum is about a centimeter, which already has a very noticeable effect for high-current transmission lines (to the point that it allows using aluminium-clad steel cables because the poor conductivity of the steel doesn't matter, everything flows in the aluminium skin). It just gets worse with increasing frequency: Skin depth vs. frequency | |
| S Dec 17, 2020 at 5:06 | history | suggested | Peter Mortensen | CC BY-SA 4.0 |
Copy edited (e.g. ref. <https://english.stackexchange.com/questions/15953>).
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| Dec 16, 2020 at 21:53 | comment | added | Peter Mortensen | @SomeoneSomewhereSupportsMonica: But only in the MHz (and above) range(?) | |
| Dec 16, 2020 at 21:52 | review | Suggested edits | |||
| S Dec 17, 2020 at 5:06 | |||||
| Dec 16, 2020 at 17:45 | vote | accept | ZekeC | ||
| Dec 16, 2020 at 12:59 | comment | added | SomeoneSomewhereSupportsMonica | Skin effect also becomes an issue at higher frequencies and power levels. | |
| Dec 16, 2020 at 0:53 | vote | accept | ZekeC | ||
| Dec 16, 2020 at 15:21 | |||||
| Dec 16, 2020 at 0:47 | comment | added | ZekeC | That's a great point! If the frequency was too high there would be significant reactive losses for lines since they are inductive by nature: XL = 2pifL | |
| Dec 16, 2020 at 0:36 | history | answered | Frog | CC BY-SA 4.0 |
