3 ms·
China has recent laid a bunch of very long high-voltage DC cables to transport power west to east. None of them are underwater, but it sure seems possible. htt
by wumpus 5y ago
China has recent laid a bunch of very long high-voltage DC cables to transport power west to east. None of them are underwater, but it sure seems possible.
https://en.wikipedia.org/wiki/List_of_HVDC_projects#Asia https://en.wikipedia.org/wiki/List_of_HVDC_projects#Asia -- and sort by length.
- akvadrako 5y agoIt's certainly interesting, especially their 1100 kV lines. But what matters is cost; China is building a lot of new coal capacity so it's not like renewables + HVDC is a slam dunk.
- vitus 5y agoYeah. China has one comparable line (Xinjiang-Anhui / Zhundong–Wannan) which is 3300km running at 1100kV. I can't find any concrete numbers on line loss there, but I would expect if the voltage is 40-50% higher, keeping all else equal, you'd see a 2x reduction in line loss, so close to 5%. (Of course, this doesn't account for last-mile delivery, or AC/DC conversion losses. But the limiting factor isn't the technology, at this point.)