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> Norway could add some diodes to the cables so that it only imports and does not export. Does norway really transfer power via DC? that can't be true can it?
by grayhatter 2y ago
> Norway could add some diodes to the cables so that it only imports and does not export.
Does norway really transfer power via DC? that can't be true can it?
- ryao 2y agoThe map on Wikipedia shows several HVDC links exiting Norway: https://en.wikipedia.org/wiki/High-voltage_direct_current https://en.wikipedia.org/wiki/High-voltage_direct_current HVDC for long distance power sharing makes sense since it is generally more efficient than HVAC. On land, HVDC is more efficient beyond ~500km, but underwater, HVDC is more efficient beyond ~50km: https://www.electricaldeck.com/2021/08/comparison-between-hvdc-and-hvac-transmission-system.html https://www.electricaldeck.com/2021/08/comparison-between-hv... Beyond the efficiency benefit, HVDC easily handles transfer of power between grids operating at different frequencies. There are also several other benefits documented at that second link.