North Sea Link Interconnecting Grids ABB Id No: POW0105

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North Sea Link Interconnecting grids ABB Id No: POW0105 The North Sea Link (NSL) interconnector links the Nordic and British markets, thus providing increased security of power supply and social-economic benefits for both regions. The 1,400 megawatt (MW) capacity NSL (North Sea Link) several advanced capabilities to stabilize adjacent AC grids. A interconnector being built for Statnett and National Grid, will converter station will be located at each end of the 730-kilo- be the longest subsea link in the world. It will also be the first meter long interconnector - one in Blyth, UK, and the other in interconnection between the UK and Norway. Using state-of- Kvilldal, Norway. the-art HVDC Light® technology to connect energy markets in Norway and Britain, it brings several benefits such as: ▪ Increased reliability and security of electricity supply in both Main data: countries Commissioning year: 2021 ▪ Enhanced opportunities to meet domestic/international Power rating: 1,400 MW renewable energy and climate change targets ▪ Added transmission capacity facilitating power trading and No of circuits: 2 economic growth 420 kV (Kvilldal, Norway) AC voltage: 400 kV (Blyth, UK) The North Sea Link will help evacuate power from the UK, DC voltage: ±525 kV when for instance, wind power generation is high there and electricity demand low, conserving water in Norway’s hydro- Length DC cables: 7 30 km power reservoirs. When demand is high in the UK and wind Main reason for choosing HVDC Long submarine cable distance, power generation is low, low-carbon energy can flow from Light: stabilizing features. Norway, helping to secure the UK’s electricity supply. The link Application: Interconnecting grids will also facilitate power trading and electricity price arbitrage between the countries. As part of its project scope, ABB will design, engineer and supply two 525-kilovolt (kV), 1,400-MW converter stations using HVDC Light or voltage sourced converter (VSC) technology, utilizing transistors for power conversion and featuring .

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