3 ms·

Can someone break down some numbers here for me? What kind of voltage do you need to move that distance? Will this create huge magnetic fields along the cable u

Can someone break down some numbers here for me? What kind of voltage do you need to move that distance? Will this create huge magnetic fields along the cable under the ocean? (Yes I know almost nothing about electricity :)

bob1029 6y ago
They're using HVDC technology. https://en.wikipedia.org/wiki/High-voltage_direct_current https://en.wikipedia.org/wiki/High-voltage_direct_current
- rjsw 6y ago
  And Australia already has experience [1] of building that type of link. [1] https://en.wikipedia.org/wiki/Basslink https://en.wikipedia.org/wiki/Basslink
  - reaperducer 6y ago
    And Australia already has experience [1] of building that type of link. And according to your link, Australia's Basslink is owned by the government of Singapore. So that helps explain why they aren't afraid to do this. They've done it before.
  - ggm 6y ago
    Which had extended breakage: they ran it "hot" and remediation was expensive.
  - Reason077 6y ago
    Basslink is a fairly run-of-the-mill HVDC interconnector by world standards at 500 MW and 370 km. The longest undersea interconnector currently under construction is the North Sea Link between the UK and Norway (700 km, 1400 MW): https://en.wikipedia.org/wiki/North_Sea_Link https://en.wikipedia.org/wiki/North_Sea_Link At 3700 km, Australia-ASEAN would be far beyond the length of anything that has been built or considered to date!
- andi999 6y ago
  I remember a lot of these hig voltage technology needs as insulator sulfurhexaflorid. Unfortunately the most potent greenhouse gas, so lets hope leackage is not too high. https://en.m.wikipedia.org/wiki/Sulfur_hexafluoride https://en.m.wikipedia.org/wiki/Sulfur_hexafluoride
threatripper 6y ago
I assume the use high voltage direct current (HVDC) power transmission using coaxial cables. Then the electric and magnetic fields are confined between the inner and outer conductors. The outer conductor basically acts as a shield that prevents electrical fields to escape. The magnetic fields also cancel out each other.

bob1029 6y ago

They're using HVDC technology. https://en.wikipedia.org/wiki/High-voltage_direct_current https://en.wikipedia.org/wiki/High-voltage_direct_current

rjsw 6y ago
And Australia already has experience [1] of building that type of link. [1] https://en.wikipedia.org/wiki/Basslink https://en.wikipedia.org/wiki/Basslink
- reaperducer 6y ago
  And Australia already has experience [1] of building that type of link. And according to your link, Australia's Basslink is owned by the government of Singapore. So that helps explain why they aren't afraid to do this. They've done it before.
- ggm 6y ago
  Which had extended breakage: they ran it "hot" and remediation was expensive.
- Reason077 6y ago
  Basslink is a fairly run-of-the-mill HVDC interconnector by world standards at 500 MW and 370 km. The longest undersea interconnector currently under construction is the North Sea Link between the UK and Norway (700 km, 1400 MW): https://en.wikipedia.org/wiki/North_Sea_Link https://en.wikipedia.org/wiki/North_Sea_Link At 3700 km, Australia-ASEAN would be far beyond the length of anything that has been built or considered to date!
andi999 6y ago
I remember a lot of these hig voltage technology needs as insulator sulfurhexaflorid. Unfortunately the most potent greenhouse gas, so lets hope leackage is not too high. https://en.m.wikipedia.org/wiki/Sulfur_hexafluoride https://en.m.wikipedia.org/wiki/Sulfur_hexafluoride

threatripper 6y ago

I assume the use high voltage direct current (HVDC) power transmission using coaxial cables. Then the electric and magnetic fields are confined between the inner and outer conductors. The outer conductor basically acts as a shield that prevents electrical fields to escape. The magnetic fields also cancel out each other.