CIEMADeS 4th INTERNATIONAL CONFERENCE Submarine Cable Connections - from concept to commissioning Puerto Rico, May 5th 2011 Vegar Syrtveit Larsen Nexans Norway AS
Agenda Early phase What can typically be done at an early stage? State of the art (limitations/possibilities) and next generation technical solutions Project phase Survey (onshore and offshore) Detailed engineering Type testing (if required) Manufacturing ac u Testing (in factory, on site) Transport, installation and protection Operation & Maintenance Nexans reference list Examples of feasible Caribbean connections
At the core of performance : a worldwide presence Industrial presence in 39 countries and commercial activities worldwide 22,400 local experts Mastery of national and international standards
Nexans Norway AS 1915 -
Nexans Norway AS Rognan Oslo (HQ) Namsos Langhus Karmøy Halden Telecom and Building Energy Networks Energy
Turn-key Supplier 1 Engineering/Design 3 Cable Manufacturing 2 Type Testing 4 Land Operations 5 Marine Operations
A submarine history as long as applied electricity 1500 submarine power cables in 100 years Challenging coastline, deep Offshore exploration in water (500 m) 35 years, water depth >2000 m Submarine Cables ranging g from 12 to 550 kv Power cables and umbilicals for the offshore industry for 35 years
Halden, Norway Specialised in submarine projects - Cable and Umbilical systems for Offshore applications
Early phase Concept/Feasibility/FEED study to: Provide preliminary cable and accessories design Identify and evaluate technology gaps (if any) Provide preliminary installation and protection method Provide budgetary price and schedule
Early phase The following parameters will have an impact of cable design and installation/protection method: Route length Transmitting requirements Temperature (in air and in soil) Soil conditions Water depth Landing points Crossings Coss Existing (parallel) cables Environmental concerns (corals, spawn seasons, archeology etc.) Human activities (ship lanes, trawling activity etc.) AC or DC (choice may depend on some of the parameters above)
State of the art and latest technology developments in HVAC transmission Outer corrosion protection Armour wires Fibre optic cable Conductor XLPE insulation system 2002 Horns Rev 1 and 2 Offshore Wind Farm, 170kV 3x1x630 mm 2 2003 Smola Wind Farm, 132kV 3x1x500 mm 2 2005 Barrow Offs Wind Farm, 132kV 3x1x300 mm 2 2006 Lynn and Inner Dowsing 36kV 3x1x185-240-630-1000 mm 2 Lead sheath 2008 Wolfe Island Wind Farm, 245kV 3x1x500 mm 2 2012 Malta Sicily, 245kV 3x1x630 mm 2
State of the art and latest technology developments in HVDC transmission Three in one cable. Mass Impregnated (MI) DC cable with Integrated Return Conductor => eliminates the use of Sea return electrodes. Fibre Optic element integrated 500 kv 800 MW Mass Impregnated Next step : p 500 kv extruded polymer alloy => lighter in weight and reduced cost
State of the art and latest technology developments Reliability of Nexans Cable System Technology: HVAC XLPE insulated cables up to 245kV (300MVA) are fully qualified, 132kV to 1000m water depth. Up to 150km lenghts. Excellent in service record HVDC Paper insulated cables up to 500kV (800MW) are fully qualified at Nexans, 250kV to 1500m water depth. Up to 1000km lengths. Excellent e in service record HVDC XLPE insulated cables up to 320kV (500MW) are under development
Project phase Onshore survey Topography, soil samples, environment Offshore Bathymetry, thermal conditions (temperature and thermal resistivity of the soil), obstacles detection, nature of the soils, human activities, meteo/oceanographic data a
Nature of soil Project phase
Nature of soil Project phase
Meteo/oceanographic data Project phase
Project phase Detailed engineering Route length Transmitting requirements Temperature (in air and in soil) Soil conditions Water depth Landing points Crossings Existing g(paa (parallel) e)cabes cables Environmental concerns (corals, spawn seasons, archeology etc.) Human activities (ship lanes, trawling activity etc.) Protection philosophy AC or DC (choice may depend on some of the parameters above) Cable and accessories design + installation method
Project phase Example 950 Ampacity [A] vs. burial depth [m] 900 850 800 Ampacity 750 900 Ampacity [A] vs. temperature t [degc] 700 0 2 4 6 8 10 850 800 750 Ampacity 700 650 0 10 20 30 40 50
Project phase Tests in the factory Routing testing during manufacturing FAT prior to load-out Type test Performed on new designs (new voltage levels, new materials, new water depths etc.) Electrical, mechanical, material Time consuming and costly
Transport and installation
Transport and installation
Transport and installation C/S Nexans Skagerrak is the most experienced DP II cable laying vessel in the world with 7000 tonnes of loading capacity
Protection shallow water
Protection deep water
External protection shallow water
External protection deep water
Nexans reference list Latest XLPE HVAC projects 2001 Reliant Energy - Galveston Island 145 3x1x630 Cu + FO 2x4600 Halden 2001 BPA - Fidalgo Is.to Decatur Is. to Lopez 72 3x1x500 Cu + FO 12500 Halden Island 2001 PREPA Punta Lima/ Vieques/Cuelebra 46 3x1x107 Cu + FO 2x18500 Halden 2002 Eltra Horns Rev wind park 170 3x1x630 Cu + FO 21000 Halden 2003 Bergenshalvøens K.K. Sture to 145 3x1x400 Cu 11700 Halden Merkesvik 2003 Troms Kraftforsyning Lyngenfjorden 145 1x630 Cu 14600 Halden 2003 Tyssefaldene 72 3x1x630 Cu + FO 2600 Halden 2004 Statkraft Smola 145 3x1x500 Cu + FO 4820 Halden 2004 Shanghai Municipal El. Power Co. 123 3x1x400 Cu + FO 2x9050 Halden Chong Ming Isl. to Chand Xing Isl. 2004 CNOOC Lu Da 72 3x1x185 Cu + FO 15000 Halden 2005 N. Douglas Youngs Bay (Al Alaska) 72 3x1x240 Cu + FO 16000 Halden 2005 Barrow wind farm (UK) 145 3x1x300 Cu + FO 27000 Halden 2005-6 Ormen Lange 420 1x1200 Cu 4x2600 Halden 2006 2007-8 Koh Samui ( Thailand) Long Island Replacement Cables - USA 115 138 3x1x300 Cu + FO 3x1x800 Cu + FO 27000 3x18500 Halden Halden 2007-8 Delma Island (in progress) UAE 132 3x1x300 Cu + FO 2x45000 Halden 2008 2008 Wolfe Island Canada Inner Oslo Fiord - Norway 245 420 3x1x500 Cu + FO 1x1200 Cu 76 00 2x3 000 Halden Halden 2008 2009-10 Horns Rev II Denmark Pemba Tanga (Zanzibar) 170 36 3x1x630 Cu + FO 3x630 Cu 4000 0 78 000 Halden Halden 2009-10 Lincs windfarm (UK) in progress 132 3x1x630 Cu + FO 2x50000 Halden 2009-10 Koh Chang in progress 115 3x1x185sqmm 185 9500 Halden 2009-10 2009-12 Cork Bay ( Ireland) in progress London Array wind farm (UK) in progress 220 170 1x1600 Cu 3x 1x500sqmm 4x3800 4x50000 Halden Halden 20 10 Belwind wind farm (Belgium) in progress 170 3x1x 500/630sqmm 54000 Halden
Nexans reference list Latest HVDC projects PROJECT Voltage km Year/s Vancouver, pole I 300 DC 3x33 1969 Skagerrak I & II 250 DC 2x127 1976/77 Vancouver Island 525 AC (9+30)x6 1982-84 Cross Channel 270 DC 4x47 1984/85 Fenno Skan I 400 DC 200 1989 Cook Strait 350 DC 3x40 1991 Skagerrak III 350 DC 127 1992/93 Korea-Cheju Island 180 DC 102 1993 Gulf of Aqaba 400 AC/DC 4x13 1997 Leyte-Cebu 230 AC 4x33 1996 Spain-Morocco 400 AC/DC 4x27 1997 Scotland N Ireland 250 DC IRC 2x65 2001 Spain-Morocco 400 AC/DC 3x27 2005 Norned (deep part) 450 DC 2x158 2008 KSA - Bahrain 400 AC 3x47 2007-2010 Sardinia-Italy 500 DC 330 2008-2010 Valhall Electrification 150kV 300 2007-2010 FennoSkan II 500 DC 200 2009-2011 Kontek (DK-D) 400 DC 50 2009-2010 Hainan-Guandong (China) 525kV AC 3x30 2008-2009 Spain-Mallorca 250 DC 242 2008-2010
Examples of feasible Caribbean connections Nevis St Kitts Route depth max 15m Route length: 5 km Cable connection: 90kV HVAC Insulation type : XLPE MVA: 50 Estimated cost (*) for cable system: 15M US$ (*) Cable manufacturing, transport, lay on seabed and protected to 100m from the shore. Based on 9300 USD/tonne for Cu and 2500 USD/tonne for Pb and 1 USD = 5,3 NOK, 1 USD = 0,67 Euro
Examples of feasible Caribbean connections Nevis USVI Route depth max 1000m Route length: 320 km Cable connection: 150kV HVDC Insulation type : Mass impregnated paper MVA: 80 Eti Estimated tdcost (*) for cable system Incl. converter stations: 320M US$ (*) Cable manufacturing, transport, lay on seabed and protected to 100m from the shore. Based on 9300 USD/tonne for Cu and 2500 USD/tonne for Pb and 1 USD = 5,3 NOK, 1 USD = 0,67 Euro
Examples of feasible Caribbean connections Nevis Puerto Rico Route depth max 1000m Route length: 400 km Cable connection: 350kV HVDC IRC MW: 400 Insulation type: Mass Impregnated Paper Estimated cost (*) for cable system incl.conventional converter stations: 720M US$ Puerto Rico St Croix Route depth max 1650m (to be verified) Route length:170 km Cable connection: 150kV HVDC IRC MW: 60 Insulation type: Mass Impregnated Paper Estimated cost (*) for cable system incl. VS converter stations: 245M US$ (*) Cable manufacturing, transport, lay on seabed and protected to 100m from the shore. Based on 9300 USD/tonne for Cu and 2500 USD/tonne for Pb and 1 USD = 5,3 NOK, 1 USD = 0,67 Euro
Examples of feasible Caribbean connections Martinique Dominica Route depth max 1000m Route length: 75 km Cable connection: 132kV HVAC Insulation type : XLPE MVA: 100 Estimated cost (*) for cable system: 65M US$ (*) Cable manufacturing, transport, lay on seabed and protected to 100m from the shore. Based on 9300 USD/tonne for Cu and 2500 USD/tonne for Pb and 1 USD = 5,3 NOK, 1 USD = 0,67 Euro
Examples of feasible Caribbean connections Guadaloupe Dominica Route depth max 700m Route length: 70 km Cable connection: 132kV HVAC Insulation type : XLPE MVA: 100 Estimated cost (*) for cable system: 59M US$ (*) Cable manufacturing, transport, lay on seabed and protected to 100m from the shore. Based on 9300 USD/tonne for Cu and 2500 USD/tonne for Pb and 1 USD = 5,3 NOK, 1 USD = 0,67 Euro
Examples of feasible Caribbean connections Puerto Rico St Thomas (USVI) Route depth max 85m Route length: 97 km Cable connection: 132kV HVAC Insulation type : XLPE MVA: 100 Estimated cost (*) for cable system: 80M US$ (*) Cable manufacturing, transport, lay on seabed and protected to 100m from the shore. Based on 9300 USD/tonne for Cu and 2500 USD/tonne for Pb and 1 USD = 5,3 NOK, 1 USD = 0,67 Euro
Examples of feasible Caribbean connections USVI BVI Route depth max 20m Route length: 32 km Cable connection: 36kV HVAC Insulation type : XLPE MVA: 25 Estimated cost (*) for cable system: 20M US$ (*) Cable manufacturing, transport, lay on seabed and protected to 100m from the shore. Based on 9300 USD/tonne for Cu and 2500 USD/tonne for Pb and 1 USD = 5,3 NOK, 1 USD = 0,67 Euro
Examples of feasible Caribbean connections Saba Sint Marteen Route depth max 1000m Route length: 60 km Cable connection: 132kV HVAC Insulation type : XLPE MVA: 100 Estimated cost (*) for cable system: 55M US$ (*) Cable manufacturing, transport, lay on seabed and protected to 100m from the shore. Based on 9300 USD/tonne for Cu and 2500 USD/tonne for Pb and 1 USD = 5,3 NOK, 1 USD = 0,67 Euro
Examples of feasible Caribbean connections Nevis Guadaloupe Route depth max 860m Route length: 140 km Cable connection: 132kV HVAC Insulation type : XLPE MVA: 85 Estimated cost (*) for cable system: 130M US$ (*) Cable manufacturing, transport, lay on seabed and protected to 100m from the shore. Based on 9300 USD/tonne for Cu and 2500 USD/tonne for Pb and 1 USD = 5,3 NOK, 1 USD = 0,67 Euro
Pemba Tange video Pemba Tanga Project
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