[HN Gopher] Cuts and jumpers (on a different scale) (1989)
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Cuts and jumpers (on a different scale) (1989)
Author : emilio2601
Score : 18 points
Date : 2024-02-21 13:32 UTC (9 hours ago)
(HTM) web link (stuff.mit.edu)
(TXT) w3m dump (stuff.mit.edu)
| avidiax wrote:
| It is surprising that all the esoteric high pressure dielectric
| oil and pumping stations and monthly tests is apparently more
| practical than just a very large conductor that stays cool enough
| for plastic insulation.
| Animats wrote:
| The UK's National Grid has a useful document on underground
| cables.[1] There's a newer insulation technology that's
| replacing oil-cooled cables. Cross-linked extruded polyethylene
| ("XLPE") is used as the insulator. NKT (Germany) and Sumitomo
| (Japan) sell underground cables good for up to 500KV. The
| technology is about 25 years old now.
|
| So the Scattergood-Olympic line mentioned in the article has
| been replaced with a more modern cable. The project was
| completed in 2018.[2] The old oil-filled line is being kept as
| a backup.
|
| [1] https://www.nationalgrid.com/electricity-
| transmission//sites...
|
| [2] https://www.ladwpnews.com/ladwp-completes-construction-of-
| th...
| AdamH12113 wrote:
| Does anyone know how the story ends?
| Animats wrote:
| With a cable replacement in 2018.[1]
|
| [1] https://www.ladwpnews.com/ladwp-completes-construction-of-
| th...
| stritafarm wrote:
| Practical Engineering did a video based on this write-up:
| https://www.youtube.com/watch?v=z-wQnWUhX5Y
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(page generated 2024-02-21 23:01 UTC)