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conference & convention enabling the next generation of networks & services FIBRE OPTIC CABLE: THE NEXT BIG THING FOR SUBSEA CONTROL? FOR SUBSEA CONTROL? Antoine Lecroart Alcatel-Lucent Submarine Networks conference & convention


  1. conference & convention enabling the next generation of networks & services FIBRE OPTIC CABLE: THE NEXT BIG THING FOR SUBSEA CONTROL? FOR SUBSEA CONTROL? Antoine Lecroart Alcatel-Lucent Submarine Networks

  2. conference & convention enabling the next generation of networks & services Presenter Profile Antoine Lecroart Place Business Development Director picture Email: antoine.lecroart@alcatel-lucent.com here Tel: (+33) 1 30 77 79 12 Mobile Tel: (+33) 6 07 89 61 60

  3. conference & convention enabling the next generation of networks & services Submarine Connectivity Solutions ����� ������ ��������������������������������� �������������������������������� ����������������������� ����������������������� ����������������������� ����������������������� �������������������� ��������������������

  4. conference & convention enabling the next generation of networks & services Dry-Wet vs. Dry-Dry • Traditional Systems are Dry-Dry – With cable, repeaters, BUs being wet ����� ������ ��������������������������������� �������������������������������� – Being adapted to floating structures (Platforms or FPSOs) with dynamic risers ����������������������� �����������������������

  5. conference & convention enabling the next generation of networks & services Dry-Wet vs. Dry-Dry • Very different to go Dry-Wet – Terminal needs to be wet • Environmental challenge • Sufficient reliability required (MTTR is many months not a few hours) • Maintainability is key • Maintainability is key – Power needs to be treated differently • More power required locally on the sea bottom • Variable loads �������������������� ��������������������

  6. conference & convention enabling the next generation of networks & services Example of a Dry-Wet Application: The NEPTUNE Canada Cable Science Observatory • North East Pacific Time-series Undersea Networked Experiments ������������������ • - 6 Science Nodes ����������� �������� • - Down to 3500 m ��������� ��������� ����������� � ����������� � ��������������� � ��������� ���� � !�����"��������� ������#���$��%

  7. conference & convention enabling the next generation of networks & services Purpose of NEPTUNE Canada • Enabling real time multi-discipline science experiments over long periods by allowing scientists to plug-in instruments to pre- determined gateways (Science Nodes) with ROVs thanks to wet-mate connections ROVs thanks to wet-mate connections • Each node has six Ports providing each: – Protected GigE connections to shore – Up to 25 A of power at 400 V DC – PTP timing distribution

  8. conference & convention enabling the next generation of networks & services NEPTUNE Canada Node • ROV wet-mate connectors used to service the node down to 3500 m Node is in two parts: – Trawl Resistant Frame – Trawl Resistant Frame (TRF) • Connected to the spur cable with a detachable Cable Termination Assembly (CTA)

  9. conference & convention enabling the next generation of networks & services NEPTUNE Canada Node • Node Module (NM) – Can be disconnected from the Science Instruments and the TRF for maintenance – Node module is made – Node module is made almost neutrally buoyant so that it can be handled by ROV – Composed of the MVC and LV/Comms pressure vessels

  10. conference & convention enabling the next generation of networks & services LV/Comms Pressure Vessel • Houses: – Comms Module: • 2.5 Gbit/s colored transponders (East and West) • IP Switches (Redundant) • Media Converters – LV Module • 400 V distribution • Low Voltage Converters • Voltage, Current protection per port

  11. conference & convention enabling the next generation of networks & services Medium Voltage Converter (MVC) Pressure Vessel – Reliable 10 kW 10 kV to 400 V DC converter in each node in each node – Parallel/Series arrangement of 48 elementary converters

  12. conference & convention enabling the next generation of networks & services DC Power Transmission Capability 120 �&����'���( 100 DC efficiency % (%) &���)�����*�'��� $ 80 60 40 20 AC efficiency (%) 0 0 100 200 300 400 500 600 length (km) •AC (50Hz) cable systems inefficient over ~ 100 km •DC systems can efficiently deliver power at 600 km

  13. conference & convention enabling the next generation of networks & services Subsea Control • System allowing the monitoring and the control subsea of the different wells – Actuation of various types of valves – Production and Injection wells surveillance �)#��� &�����, .��),� +�,,�-���

  14. conference & convention enabling the next generation of networks & services Subsea Control Evolutions • Move from copper wires to fiber – More reach, more bandwidth (long tie backs) • Move from proprietary protocols to IP – Full advantage of TCP/IP solutions • Move from hydraulics controls to electrical controls • Move from hydraulics controls to electrical controls – Less environmental risks • Functionally not very different from NEPTUNE Canada!

  15. conference & convention enabling the next generation of networks & services Example of Long Tie Back: Snohvit (~140 km)

  16. conference & convention enabling the next generation of networks & services Snohvit Umbilical

  17. conference & convention enabling the next generation of networks & services Why use a separate submarine cable? – Submarine cable is an optimized and field proven solution for 10 kV electrical transport and fiber protection: • Structure is based on a vault to protect fibers against to protect fibers against hydrostatic pressure • Fibers are mechanically protected against tension and crush… • Fibers are protected against hydrogen

  18. conference & convention enabling the next generation of networks & services Why use a separate submarine cable? – The Telecom Industry has developed solutions for submarine cable maintenance: • Deep sea repairs (cable joints) • Buit-in high reliability • Buit-in high reliability (25 year design life) ������������������������������������������������������������� ��������������������������

  19. conference & convention enabling the next generation of networks & services DC & FO Step-out Outline Solution: UR (Un-repeatered) • Example for three templates .����/ &�#,��/ ���� ���� ���� ������/ /' /$ /� &�����/ &�����/ �0 �( �0 �( �0 �( �0 �( �0 �( �0 �( 2�'3� 2�'3� 2�'3� ������ ����� �����! �0 �( �0 �( �0 �( .����1 2�'3� 2�'3� 2�'3� ���� ���� ���� ������1 1' 1$ 1� &�#,��1 &�����1

  20. conference & convention enabling the next generation of networks & services DC & FO Step-out Outline Solution: Repeatered • Repeaters are inserted in the loop .����/ &�#,��/ ���� ���� ���� ������/ /' /$ /� &�����/ &�����/ �0 �( �0 �( �0 �( �0 �( �0 �( �0 �( 2�'3� 2�'3� 2�'3� ������ ����� �����! �0 �( �0 �( �0 �( .����1 2�'3� 2�'3� 2�'3� ���� ���� ���� ������1 1' 1$ 1� &�#,��1 &�����1

  21. conference & convention enabling the next generation of networks & services Conclusion – A Submarine Cable solution is the most efficient solution to effect reliable communications and bring power subsea communications and bring power subsea – Tie backs can reach 500+ km thanks to the use of in line repeaters – Cable and repeaters have demonstrated high reliability over 25 years – NEPTUNE is a live proof of concept

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