141
submitted 1 year ago by [email protected] to c/[email protected]

World’s largest electric cable close to power, could light 1.4 million homes | A high voltage direct current cable will connect UK homes with fresh green energy from the wind farms of Denmark.::undefined

top 7 comments
sorted by: hot top new old
[-] [email protected] 23 points 1 year ago

Fresh green energy, straight from the orchard

[-] [email protected] 4 points 1 year ago

It makes me want it more. That really should be the marketing for renewable energy. Everyone likes “fresh”

… especially republican men.

[-] [email protected] 4 points 1 year ago

but will it kill a great white shark that keeps pestering the local kids? i need to know

[-] [email protected] 2 points 1 year ago

It's gonna push DC from DK to UK? Seems ineffective?

[-] [email protected] 24 points 1 year ago* (last edited 1 year ago)

Why do you think so? HVDC cables are not unusual nowadays, and in fact excel both in economic and technical terms over long distance.

https://www.electricaldeck.com/2021/08/comparison-between-hvdc-and-hvac-transmission-system.html

This cable length is 765km, but in the Canadian province of Manitoba we have a 900 km transmission line built 50 years ago and still running strong for the most part.

[-] [email protected] 11 points 1 year ago

Huh. I've just always heard that AC is the better way for long distances. TIL

[-] [email protected] 16 points 1 year ago

AC is typically used for power grids because it's very easy to change voltage with a transformer. You can have 100-200V in households, and use a cheap transformer to step up the voltage to 100+kV to reduce resistive losses for long distances.

AC works well, but there are technically some downsides with AC, like the skin effect and parasitic capacitance. With modern technology, it's pretty easy to step up/down DC voltage, and by using it for the biggest, longest power lines, you see some nice power savings for the effort. It's called "HVDC".

this post was submitted on 20 Dec 2023
141 points (97.3% liked)

Technology

71143 readers
2916 users here now

This is a most excellent place for technology news and articles.


Our Rules


  1. Follow the lemmy.world rules.
  2. Only tech related news or articles.
  3. Be excellent to each other!
  4. Mod approved content bots can post up to 10 articles per day.
  5. Threads asking for personal tech support may be deleted.
  6. Politics threads may be removed.
  7. No memes allowed as posts, OK to post as comments.
  8. Only approved bots from the list below, this includes using AI responses and summaries. To ask if your bot can be added please contact a mod.
  9. Check for duplicates before posting, duplicates may be removed
  10. Accounts 7 days and younger will have their posts automatically removed.

Approved Bots


founded 2 years ago
MODERATORS