Konti-Skan
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Kontiskan (also Konti-Skan) is the name of high-voltage direct-current transmission line between Denmark and Sweden. The 1965-built Kontiskan 1, which was able to transmit a up to 250 megawatts of power with an operating voltage of 250 kV, was taken out of operation and was disconnected on 15 August 2006. The 1988-built Kontiskan 2 can transmit 300 megawatts with a voltage of 285 kV. While Kontiskan 1 used mercury vapor rectifiers in the static inverter plants, Kontiskan 2 uses thyristors.
On the Danish side the static inverter plant of Kontiskan 2 is close to Vester Hassing near Aalborg. From Vester Hassing a 34 km long, two-pole overhead line with the high voltage poles of Konti-Skan 2 to the cable beginning at the Danish coast near Staesnaes, while two 27 km long underground cables transfer the current of the other poles of Konti-Skan 2 to the grounding electrode at Soera. The 23 km long submarine cable to the Danish island of Laeso begins at Stensnaes. This cable consists of 3 parallel cables, each of two partial conductors with a copper cross section of 310 square millimeters. One of these cables was used by Kontiskan 1 and one is used by Kontiskan 2. Of the third set of cables, one conductor was used for Kontiskan 1 and the other is used for Kontiskan 2. Laeso island is crossed by the Konti-Skan on a 17 km long two-pole overhead line. Between Laeso and Sweden a monopolar copper cable was laid for Kontiskan 1 and 2 with a cross section of 1200 square millimetres.
From the Swedish coast a 38 km long overhead power line runs to the converter station of Konti-Skan 1 near Stenkullen. On the first 9 km of this line the pylons also carry the high-voltage conductor of Kontiskan 2 and the conductor to the common grounding of Kontiskan 1 and 2 near Risø on the Baltic Sea. In opposite to Kontiskan 1 the static inverter station of Kontiskan 2 is situated South of Göteborg in near Lindome, and the route of the Kontiskan 1 line. The last 30 km of Konti-Skan 1 are installed on guyed aluminum framework pylons with an unusually low weight of only 800 kilograms.
