IFEA Subsea Kraftforsyning elektro 25. mai 2011 Høyspente Konnektorer
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1 IFEA Subsea Kraftforsyning elektro 25. mai 2011 Høyspente Konnektorer Boosting Separation Compression Power Kristin Moe Elgsaas 1
2 Høyspente Konnektorer Definisjoner & prinsipper Produkter & prosjekter Utfordringer Muligheter 2
3 Subsea HV Connectors are critical success factors for EOR Benefits of EOR: Increased recovery rates Increased total recovery Increased efficiency of recovery
4 Terminology to be used in this presentation umbilical UTA Transformer Motor Penetrators are equipment bushings with or withouth differential pressure Dry Mate Connectors are intended for connection in dry/controlled environments Wet Mate Connectors are intended for subsea connection Definition: Voltage rating U0/U(Um): 18/30 (36) [kv] (IEC 60183) 4
5 Two concepts are currently available for Wet Mate Connectors I) Conventional stab type connector with exposed contact pins Power Conductor Rubber bellows Dielectric Oil Solid insulation Unmated Water=Ground Mated Source: Deutsch Offshore Source: Expro 5 GE Title or job number 5/30/2011
6 Two concepts are currently available for Wet Mate Connectors, con t II) Clean Environmental type Connectors (MECON) Power Conductor Flushed and cleaned dielectric oil Dielectric Oil Solid insulation Mechanically Connected Water=Ground Electrically Mated No water inside 6 GE Title or job number 5/30/2011
7 List of subsea connectors 7
8 Currently available maximum* ratings 36kV, 900A 145kV, 700A *Ratings are maximized with regard to voltage on the primary side of the transformer, and with regard to current on the secondary side of the transformer 12kV, 1800A 12kV, 1800A 8
9 AC Power for Subsea Pumping and Compression Trends: Deeper Waters, longer off sets, multiple and increased loads 1. Topside VSD - Troll Pilot: 1,5 MW pump, 6kV, 3,6km 2. Topside VSD and Subsea Power Transformer - Tyrihans: 2,7 MW pumps, 22 kv, 31 km - Åsgard: 9 MW compressor, 45 kv, 48 km - Jack/St. Malo: 2,5 MW pumps, 22kV, 2200 mwd 3. Subsea T&D System (Transformer, Switchgear and VSD - Ormen Lange: 58 MW, 120 kv, 120 km 9 GE Title or job number 5/30/2011
10 Need for subsea HV power connectors 15 P 5 WM 24 DM 10
11 Some considerations... Subsea HV Connectors are HV electric components placed in extreme environments (sea water, process gas) Operation down to 3000m water depth (testing up to 450 bar) Subsea Connections in the presence of sand and silt Operation with high differential pressures and potentially rapid decompression Operating temp range from -5 to 20 degree C Storage temp range from -25 to 60 degree C 25 years design life no maintenance Multi-skilled and experienced experts are required to successfully develop Subsea HV Connectors 11
12 There is no industry standard for design and testing of Subsea HV Connectors A great number of standards are partially and/or potentially relevant Lack of standardization could cause costly overqualification (or under-qualification) No clear requirements promote project/customer specific requirements Statoil TD 0153 is however widely used Electrical Properties, PD Hyperbaric Thermal Thermal chock Vibration Impact 12
13 Slow technology uptake in the industry is a challenge It takes on average 16 years from concept to widespread commercial adoption in the oil & gas industry Operational experience is key to «entry» Limited number of projects that require HV subsea power (so far) Source: McKinsey Troll Pilot contract award 1997 (start-up 2001) 13
14 Example - MECON WM development D E V E L O P M E N T Qualified 2006 Ongoin g Qual 2011 Start-up: 2001 Contract award: 1997 TIMELINE 14
15 Power ratings for Subsea power products System Power, max [kw] Voltage [kv] Current [A] Frequency [Hz] Control system (incl. All electric) 15 1,2 7, /3-60 Small pump , Large pump , Compressor , Transmission & Distribution /3/50/60 15 GE Title or job number 5/30/2011
16 - Current [A] Power range, Z-chart WM Compressor Power T&D Pump Control , Environmentally clean type connector Conventional stab type connector Voltage [kv]
17 - Current [A] Power range, Z-chart penetrators & DM Compressor Power T&D Pump Control , Voltage [kv]
18 Synergies with Offshore/Marine renewable energy production Offshore Wind, Wave and Tidal turbines; - Similarities on power technology and subsea power products - Some of the same companies (Oil & Gas) involved - Larger volume, shallow water - Cost reduction will be a critical success factor for Subsea HV Connectors in the renewables sector 18
19 Looking further ahead, alternatives to conventional AC systems might stake out the course for further HV Subsea Connector developments Power [MVA] = King = Tyrihans = Åsgard = Ormen Lange 19
20 Summary Subsea HV Connectors will be an integral part of and a critical success factor for future oil and gas development There are synergies with the emerging offshore renewables energy sector The Subsea HV Connector business is demanding. Thus skilled, trained and experienced experts are required to provide reliable solutions. Qualification efforts are currently focusing on enabling subsea power AC distribution systems. This could change in the future This is GE Innovation Now
21 Thank You For Listening! For further information please contact: Kristin Moe Elgsaas Subsea Power T: M: Eyvind Lyches vei 10 N-1338 Sandvika NORWAY 21
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