"Renewable" Electricity Champion Denmark Now Looking Into Nuclear

Manhattan Contrarian ^ | 19 May, 2025 | Francis Menton

[GenXPolymath]

HVDC links can and do function as virtual inertia. The newer links are VSC based those can be driven to not follow the grid like a PLL converter station they can push both active power, reactive power and virtual inertia. Google scholar has a number of paper’s confirming this and how it’s implemented in places that have large HVDC links especially under sea cables since you cannot send HVAC under the ocean the mag fields and seawater do not play nice.

Any VSC power converter can be driven to produce active,reactive and frequency/phase control it’s all in the driver electronics. It’s much cheaper to just phase lock loop an power converter to the grid and let it grid follow. It’s not a technical issue its a mandate that all new power electronics must be VSC based, with active,reactive and frequency control this would solve the inertia issue as well given that VSC can team up to produce gigawatts worth of inertia ancillary services.

[hecticskeptic]

… the advantage of being a small country that is next door to a big country where the neighbors can’t act as a big battery.
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That line should have read “... where the neighbors CAN act as a big battery.”