Technical Features
The 240-kilometre (150 mi) Cross-Skagerrak 1–3 scheme consists of a 113-kilometre (70 mi) overhead line and a 127-kilometre (79 mi) underwater cable. It has a capacity of 1,050 megawatts (MW). Both land parts in Denmark and in Norway uses overhead lines from the cable landing point to the converter stations. The towers were originally constructed for four poles, but were rebuilt for three conductors (three poles) when Skagerrak 3 was established. Near Aggesund HVDC Cross-Skagerrak crosses Aggesund strait overhead on 70-metre-tall (230 ft) towers with a 470-metre-long (1,540 ft) span.
For such a long submarine cable, an AC transmission scheme would not be feasible since too much of the cable's capacity would be consumed by the capacitance of the cable itself.
Read more about this topic: Cross-Skagerrak
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