DolWin1 - 800 MW HVDC Light transmission Grid connection of several offshore wind farms

Oslo

Copenhagen

DolWin Alpha Hamburg

Dörpen West

The DolWin1 platform will be similar to the existing BorWin alpha

The 800 MW DolWin1 HVDC Light® transmission system will Data connect offshore wind farms located in the cluster DolWin1 Connection point shore: Dörpen West substation (Borkum West II wind farm, 400 MW, plus future unnamed Connection point offshore: DolWin alpha platform wind farms) to the German grid. Full Grid Code compliance Operator: TenneT Offshore GmbH, of the 165 km long HVDC (high-voltage direct current) Start of project: July, 2010 transmission ensures a robust network connection. Commercial operation: Early 2013 Transmission technology: HVDC Light® by ABB With this transmission link, the range of extruded polymer Transmission capacity: 800 MW HVDC Light cables is extended to 320 kV DC. DC voltage: ± 320 kV AC voltage Dörpen West: 380 kV The system features the latest generation of ABB power semi- Cable route length: 165 km conductors. The increased performance ensures a higher - 75 km with submarine cables availability and lower losses of the entire system. - 90 km with land cables Featured submarine cable Independent control of active and reactive power flow, with - Extruded polymer insulated cable total control of power from zero to full power without filter - Conductor 1000 mm2 copper switching, enables smooth and reliable operation of the off- - Steel armoring shore wind farm. - Diameter 115 mm - Weight 34 kg/m This is the second DC grid connection of offshore wind farms Featured land cable delivered by ABB. - Extruded polymer insulated cable - Conductor 2000 mm2 aluminum - Diameter 118 mm - Weight 14 kg/m HVDC Light® converter stations: Convert alternate current (AC) to direct current (DC) and on the other side DC to AC. www.abb.com/hvdc Fax: +462406111 59 Tel: SE-771 80Ludvika,Sweden Systems -HVDC Grid ABB AB Tjæreborg Project close to60,000MWinover70projects allovertheworld. schemes tothebenefitofitscustomers. Today ABBhasinstalled and hasanunparalleledhistoryofsupplyingHVDCtransmission ABB hasbeenintheforefront ofHVDCtechnology since1954 impact onseaandland. cable jointing.Theoil-free cablesminimizetheenvironmental installation onlandandseaallowingveryshorttimefor The proven HVDCLightextrudedcabletechnologysimplifies Germany DolWin2 Denmark Norway Skagerrak 4 Lithuania Sweden NordBalt Germany DolWin1 Irland-UK Interconnector East-West Namibia Caprivi Link Germany BorWin1 Norway Valhall Estonia-Finland Estlink Norway Troll A Australia Murraylink USA Cross Sound USA Eagle Pass Australia Directlink Sweden Gotland Sweden Hällsjön +46 240782000

In service 2015 2014 2015 2013 2012 2010 2009 2011 2006 2005 2002 2002 2000 2000 2000 1999 1997 Power MW 2 x41 3 x60 900 700 700 800 500 300 400 350 220 330 7,2 78 36 50 3 DC voltagekV ±15,9 ± 300 ± 320 ± 200 ±320 ±150 ±150 ±150 ±150 ± 60 ± 80 ± 80 ± 10 500 350 150 ± 9 oWn ea 5 kV 155 beta DolWin Dörpen-West 380kV kV 400 Tjele, Kristiansand and Nybro, 400kV Klaipeda, 330kV alpha,155kV DolWin Dörpen West, 380kV Deeside, 400kV Woodland, 400kV Gerus, 400kV Zambezi, 330kV BorWin Alpha,170kV BorWin Diele, 380kV Valhall, 11kV Lista, 300kV Harku, 330kV Espoo, 400kV Kollsnes, 132kV Troll A,56kV Red Cliffs, 220kV Berri, 132kV Shoreham, 138kV New Haven,345kV (both sides) Eagle Pass,138kV Tjaereborg, 10,5kV Enge, 10,5kV Mullumbimby, 132kV Terranora, 110kV Bäcks, 77kV Näs, 77kV Grängesberg, 10kV Hällsjön, 10kV Station location supplied withoverheadlines. meric DCcableshavebeeninstalled.HVDCLightcanalsobe 23 converterstations.More than2,000kmofextrudedpoly- extruded polymericDCcable),havenowbeenimplementedin HVDC Light

135 km 244 km 450 km 165 km 256 km (overhead) 950 km 200 km 292 km 105 km 67 km 180 km 40 km (back-to-back) NA 4,4 km 65 km 70 km (overhead) 10 km Transmission ® systems(Voltage Source Convertersandthe Grid interconnection Grid interconnection Grid interconnection Offshore wind Grid interconnection Grid reliability Offshore wind Offshore Undergrounding Grid reliability, Offshore Undergrounding Grid reliability Grid reliability Undergrounding Wind, Undergrounding Undergrounding Wind, Pilot system Application www.abb.com/hvdc Germany TenneT Offshore GmbH, Denmark .dk, , Norway Lithuania turtas, SvK, Sweden Germany TenneT Offshore GmbH Ireland EirGrid, Namibia NamPower, Germany TenneT Offshore GmbH BP, Norway Estonia Nordic EnergyLinkAS, Statoil, Norway USA TransEnergie US, USA TransEnergie US, AEP, USA Eltra, Denmark North Power, Australia TransEnergy, USA Sweden GEAB, VB Elnät,Sweden Customer

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