Submarine Cable Link the Norned HVDC Connection, Norway

Submarine Cable Link The NorNed HVDC Connection, Norway – Netherlands

One of the longest and most powerful Scope of supply HVDC submarine systems in the world −− HVDC cable and accessories for 420 km −− HVDC converter stations Enables reliable power trading between Norway and the Netherlands Cable data Voltage +450 kV DC Power 700 MW Length 580 km

Conductor 270 km 2 x 790 mm2 Cu (flat cable) 2 x 150 km 700 mm2 Cu (single core cable) Insulation MI Weight 84 kg/m flat cable 37 kg/m single core cable Customer Statnett, Norway and TenneT, Netherlands Year 2008 A layerofsemi-conductingcarbon paperonthesurfaceof construction. strands, optimizingasmoothsurfacewithverycompact ductors consistingofconcentriclayerskeystone-shaped and asingle-core cable.Bothcabletypeshavecoppercon were usedfortheshallowpartofroute: atwin-core cable draining, paper-insulated HVDCcable.Two different designs The NorNedcableisaMIcable:mass-impregnated, non- The ABBsolution many, andthe SwePolcable,betweenSwedenandPoland. solutions suchastheBalticcable,betweenSwedenandGer completion oftheproject. Earlier, ABBhavedelivered similar Group wasvitalfortherapid andsuccessfuldevelopment at bothends.Thewiderangeofknow-howwithintheABB Providing 420kmcables aswelltheconverterstations were pioneered byABB. technology systemforbothconverterstationsandcables confidence forABB’s deliveryoftheNorNedproject. The SwePol betweenSwedenandPolandgavethecustomers as theBalticcablebetweenSwedenandGermany knowledge andproven solutions forsimilarprojects such for therapidandsuccessfulcompletionofproject. ABB’s The widerangeofexpertisewithintheABBGroup wasvital Why ABB? − − increasing thereliability ofelectricitysupply. enable powertradingbetweenthetwocountriesaswell connect thepowergridofNorwayandNetherlands Netherlands. ThegoalofthisHVDCtransmissionlinkisto power gridcompanies,StatnettinNorwayandTenneT inthe The NorNedproject wasundertakenbythetwostate-owned Customer needs − − HVDC cablesincommercial operation. At 700MW, thecableisoneofmostpowerful HVDC cableseverconstructed. Stretching over580km, itbecamethelongestsubmarine Eemshaven Netherlands Feda Netherlands Norway

- - Copyright ©2013ABB.Allrights reserved. – isforbiddenwithoutpriorwrittenconsentofABBAB. third partiesorutilizationofitscontents–inwholeparts illustrations containedtherein. Anyreproduction, disclosure to serve allrightsinthisdocumentandthesubjectmatter and errors orpossiblelackofinformationinthisdocument.We re does notacceptanyresponsibility whatsoeverforpotential purchase orders, theagreed particularsshallprevail. ABBAB regardcontents ofthisdocumentwithoutpriornotice.With to We reserve therighttomaketechnicalchangesormodify Note: www.abb.com/cables E-Mail: [email protected] Fax: Phone: High Voltage Cables ABB AB For more informationplease contact: was utilizedonthecablelayingvessel. the twin-core cablespecially designedhandlingequipment was laidinsections,joinedwithonlyfivefieldsplices.For The submarinecableweighsnearly35,000metrictonsand Dutch coastandsplitsintoconventionalsinglecore cables. A twin-core cablerunsforadistanceof270kmfrom the shore from EemshavenconverterstationintheNetherlands. The cableroute beginswithalandsectionof1.5kmtothe long cableinterconnections. the needforjointingoperationsover minimizes which cable, MI up to154kmofsingle-core and75kmoftwin-core flat cables. Thecablewasproduced insixcontinuouslengthsof signed tocaterfortheproduction ofsubmarinehighvoltage in ABBsfactoryKarlskrona, Sweden,whichisspeciallyde The shallowsectionoftheNorNedcablewasmanufactured polypropylene protects yarn thecablefrom corrosion. any torsionalstress. Anouterservingofbitumen-bonded opposite directions toformacounter-helix, whicheliminates two layersofsteel-wire armour. Thesteelwires are appliedin mechanical strength ofthecableisprovided bysteel tapeand tects theinsulationfrom moisture orwaterpenetration. The paper. AhermeticallysealedleadsheathwithaPEjacketpro paperinsulation isaconductivelayerofcarbonandmetallized otherwise increase thefield-strength locally. Outsidethe conductor eliminatesanypossibleunevenness,whichwould and isasuccessfullinkbetweenNorwaytheNetherlands. The NorNedHVDCproject hasbeenoperatingsince2008 +46 45555655 +46 45555600

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