Konti-Skan 2
Cross BorderOperational357.5 MW300 kV150 km1988
Also known as:Kontiskan 2, KS2
Status:Operational
Capacity:357.5 MW
Type:cross border
Expected Life:47 years
Website:www.svk.se
Konti‑Skan 2 (KS2) is the second pole of the Konti‑Skan HVDC interconnection between Western Denmark (DK1) and south‑west Sweden (SE3), commissioned in 1988. KS2 is a line‑commutated (thyristor) HVDC pole with a nominal capacity of 300 MW and an operating DC voltage in the c. 285–300 kV range. The link...
Supply Chain (7)
Project Timeline (11)
19 Apr 2022Cable Repair
Following the January 2022 fault, NKT executed a subsea repair campaign on the 285 kV Konti-Skan 2 mass-impregnated HVDC cable, locating the damage about 33 km offshore from the Swedish converter station, cutting out the damaged section using a third-party repair vessel, jointing in a replacement length, and reburying the cable at a safer water depth to reduce future external impact risks.
19 Apr 2022System Restoration
After completion of repair works on the damaged section, the Konti-Skan 2 interconnector was re-energized and returned to full operational service, restoring HVDC power transmission between Sweden and Denmark that had been lost due to the January 2022 external-impact cable fault.
20 Jan 2022Major Outage
On 20 January 2022, the Konti-Skan 2 HVDC cable between Lindome in Sweden and Vester Hassing in Denmark suffered a fault due to external impact, believed to be related to an anchor-drag incident, causing the decades-old 285 kV interconnector pole to go out of service and interrupt power transmission on Konti-Skan 2.
2019Major Maintenance
In 2019, Hitachi Energy (then ABB Power Grids) completed a major upgrade of the control and protection system for the Konti-Skan HVDC link, including Konti-Skan 2, installing the latest MACH-based Modular Advanced Control for HVDC technology to modernize the converters and extend the link’s lifespan and reliability for cross-border power exchange between Energinet and Svenska kraftnät.
Q2 2017Procurement Other
In the second quarter of 2017, ABB won an order worth about $30 million from Svenska Kraftnät and Energinet to upgrade the control and protection system of the Konti‑Skan HVDC transmission link, including Konti‑Skan 2, using its ABB Ability MACH technology, with the new digital control system intended to extend the link’s lifespan and enhance power availability, reliability and efficiency.
31 Aug 2016Procurement Other
On 31 August 2016, Clinton Marine Survey was reported to have been awarded a cable tracking project on the Konti‑Skan HVDC interconnector between Sweden and Denmark, covering cable tracking, ROV video, multibeam and sidescan sonar along the link’s route between Lindome south of Gothenburg and Læsø, where Svenska kraftnät owns and operates the Konti‑Skan 1 and 2 cables.
31 Aug 2016Inspection Survey
Clinton Marine Survey carried out an operational inspection campaign on the Konti-Skan HVDC link between Sweden and Denmark, which includes the Konti-Skan 2 cable system, performing cable tracking, ROV video, multibeam and sidescan sonar surveys along the route between Lindome and Læsø using the survey vessels MV Lode and MV Stenkoll.
2004Procurement Other
In 2004, Energinet.dk selected Newcon Data AB to deliver a TessEm 7000-based protocol converter to interface the existing ABB Central Alarm System for Konti‑Skan 2 at Vester Hassing with a new Areva SCADA system, converting around 1,000 digital and 80 analogue signals using the IEC 60870‑5‑101 protocol as part of a broader refurbishment of the Denmark–Sweden HVDC interconnection converter stations.
1993System Testing
In 1993, the Lindome converter station on Konti-Skan 2 received the world’s first electronically controlled AC filter, ConTune, implemented by ABB/Hitachi Energy as a prototype HVDC 2000 unit on the Konti-Skan link to demonstrate and trial advanced AC harmonic filtering technology in live operation.
1991Operations Other
In 1991, an active DC filter described as the world’s first of its kind was installed at the Lindome converter station on Pole 2 (Konti-Skan 2), providing advanced harmonic filtering functionality as part of Hitachi Energy’s (then ABB’s) technology development on the Konti-Skan HVDC link.