1. MARIGOLD the MEUST deep sea network
Specificities of the site
Architecture concept Marigold
Electric power distribution
Technological aspects
JJD 14/02/2011

2. MARIGOLD the MEUST deep sea network
Specificities of the site :
Site location
Site evaluation campaign
JJD 14/02/2011

3. MEUST site location P A L
JJD 14/02/2011

4. MEUST site location
Strategy : « a priori » choice of two potential areas.
POINT P : latitude 42° 50’N distance 16NM POINT L : latitude 42° 50’N distance 26NM
Basic criterias :
- Three nautic miles diameter horizontal surface
- depth ~ m
- closer to the shore in front of possible submarine
cables landing field
Influence of slope Site evaluation campaign
JJD 14/02/2011

5. MEUST site evaluation
Synchronous measurements of the physical characteristics (temperature, conductivity, pressure, turbidity) and sea current versus bioluminescence:
• For one year at least,
•At two locations : La Seyne off distant ~ 15 and 25 nautical miles from the Sablettes 'cable landing zone.
•Two identical autonomous lines and simultaneously
deployed
•Recovered periodically every 2-3 months (80 d) in order to:
• Data retrieval and replacement of batteries on board
and immediate re-immersion.
Data available on website:
JJD 14/02/2011

6. MARIGOLD the MEUST deep sea network
Marigold architecture :
General provision
Network components
Deployment scenarios
JJD 14/02/2011

7. MARIGOLD General provision
Dimensioned to host up to ~ 1OO DU’s.
Deployed offshore of Toulon ( km from the coast).
Designed in a scalable ring topology network architecture.
Made of standard components gradually deployed
Performed with similar offshore facilities as ANTARES (DPS ship and ROV)
Two access options considered : one or two MEOC possible.
Fibers and conductor distributed in the two directions of the ring.
JJD 14/02/2011

8. Marigold design with two cables access
JJD 14/02/2011

9. MARIGOLD General provision
Electric power transported in AC current.
Standard telecommunication cable used as MEOC ( one conductor, ~ min 60 fibers needed, 30 only with two access cables).
Sea return current.
6 identical nodes distributed around a ~ 2km diameter area and chained by links of ~3km.
16 DU’s individually connected by ROV to each node to constitute a bunch arranged on seabed as ANTARES.
JJD 14/02/2011

10. MARIGOLD Network components
Electro-optical Marigold links :
3 km length
Designed to allow dry connections operation to the nodes on board.
High voltage specification.
Cable
Joint
Dry connectors
Termination
JJD 14/02/2011

11. MARIGOLD Network components
Marigold nodes :
Sea return electrode
Manifold
Junction box
Pre-chambers
Two main components : node = Junction box + manifolds
JJD 14/02/2011

12. MARIGOLD Deployment scenarios
The main idea of Marigold is to deploy each node one after another with its link ready to connect to the next node.
Li+1
Manifolds Mi Ni Li
JJD 21/06/2010
Projet MEUST Infrastructure

13. Marigold Deployment scenarios
Each node could be recovery for replacement or board repair without affecting the position of the others.
JJD 21/06/2010
Projet MEUST Infrastructure

14. MARIGOLD Deployment scenarios
General assumptions:
Sea facilities capabilities similar to those used byANTARES ( DPS supply ship and ROV)
Two ships of laying needed (Best Practice ESONET Recommendations )
Installation and recovery of nodes by winch (remove tails dredging).
No handling charges when using the links.
JJD 14/02/2011

15. Marigold deployment scenarios
Laying the main cable
(One MEOC only and Y termination option)
Laying from beach to sea using specialized cable ship.
Extra length deployed before final layout.
Network links deployed at endings of the cable and provided with plug cap and dredging tail .
Y termination
Joint terminal
Shore
Plug Cap L1 L2
JJD 14/02/2011

16. Marigold deployment scenarios
Installing a standard Node:
Recovery of the link Li previously deployed with Ni-2
Connexion on board of Li to new node Ni to the next link Li+2.
Pose of Ni and next associated link Li+1 as illustrated using two work ships. Ni
Li-2 Li
Ni-2
Li+2
JJD 14/02/2011

17. Marigold deployment scenarios
Recovering a Node :
Request a ROV intervention
for disconnecting all the users of the node and hooking the cable winch recovery. Ni Li
Li-2
JJD 14/02/2011

18. MARIGOLD the MEUST deep sea network
Electric power distribution :
General structure
Possible diagram to study
Work in progress
JJD 14/02/2011

19. MARIGOLD Electric power distribution
General structure :
Energy transport is considered in single phase AC current.
Voltage is raised to up to 4 or 5000 volts for transport in shore source substation.
High specific submarine capacitance compensated to reduce reactive power.
Sea return current .
Network designed in double supply by looped connection.
JJD 14/02/2011

20. MARIGOLD Electric power distribution
Shore source station
Backup power generator
Supplier EDF 400V 3 ~
Battery
Backup power
To switch node
To next node TI TT
400/5000 V
5000/400 V
To manifolds
To manifolds
UPS
Possible single line diagram
MEOC
Seabed network
Internal power system
AC/DC converters
JJD 14/02/2011

21. MARIGOLD Electric power distribution
Work in progress :
The definition of requirements using functional analysis method is done ( report available next week).
Diagram studies and simulations started and results foreseen by the end of April.( Need to know DU’s power requirement )
The next step will be to specify the components for integration into the junction box and build a network model for testing , validation and node prototype design specifications. (Job finalized at the end of year).
Concerning the MEOC , the supply contract has to be signed by the end of for a deploy ment completed in 2012 ( Tenders in Fall). Starting inquiries soon.
JJD 14/02/2011

22. MARIGOLD the MEUST deep sea network
Technological aspects :
Two main challenges :
Integrate pressure balance devices in the junction boxes
Find a technical and/or economical alternative to the wetmate connectors used by ANTARES.
Node conceptual design
Wet mateable interconnexions
JJD 14/02/2011

23. MARIGOLD node conceptual design
Two main components constitute the node : the
junction box and the manifolds.
The junction box is designed with two appendices
( prechambers) in order to connect the adjacent
network links of the node.
Links interfaces are designed to manage dry
connections which have to be performed on
board of the ship.
The junction box could be design in three parts to
take care to the integration of the devices.
JJD 14/02/2011

24. MARIGOLD node conceptual design
Manifolds interfaces
Components and devices integration cylinder
Link connections prechambers
Closure flange
High voltage container
The three parts of a junction box

25. MARIGOLD node conceptual design
Junction box integration scenario
JJD 14/02/2011

26. MARIGOLD node conceptual design
Junction box integration scenario
JJD 14/02/2011

27. Virtual MARIGOLD node
JJD 14/02/2011

28. Virtual MARIGOLD node
JJD 14/02/2011

29. Link ending example adapted to pressure balance technology
JJD 14/02/2011

30. Technological aspects inquiries
Equipressure devices :
Inquiries to Pronal and Musthane companies ( elastomeric bags for 25 years timelife).
Junction box :
Manufacturing of large and thin welded containers in stainless steel or titanium ( 630x1500 mm).
JJD 14/02/2011

31. MARIGOLD the MEUST deep sea network
Technological aspects :
Two challenges :
Node design
Wet mateable interconnexions
JJD 14/02/2011

32. Actual interconnexions layout !
ANTARES
JJD 14/02/2011

33. « Wet mateable » connectors
Hybrides :
monopole ODI
Seacon (base « hydralight »)
WetMate/CPPM
Electrics :
Ifremer COS
Seacon, Gisma
Vectogray, Hydrogroup, Alstom, Digitron
Optics :
Seacon, Gisma
Seacon / Ifremer
Elec connector
Optic connector
JJD 14/02/2011

34. Hybrids:
ODI “rolling seal”:
Seacon hydralight
cost >25k€

35. Hybrid: “WetMate”
Industrial Project (1MW) with EDF, COMEX and Subseatech (1.8M€)
End 2012

36. Connecteurs « wet mateable »
Electriques :
Ifremer COS
Low cost ??

37. Connecteurs « wet mateable »
Electriques low tension (<500V): Seacon, Gisma
Low cost <10k€ 37

38. Connecteurs « wet mateable »
Electriques hight tension: Vectogray, Hydrogroup, Alstom, Digitron, Deutch
Cost >20k€ 38

39. JJD Réunion Infrastructure MEUST 31/01/2011
Optic: GISMA, Seacon Hydralight
cost >10k€
JJD Réunion Infrastructure MEUST 31/01/2011
JJD réunion infrastructure MEUST 31/01/2011 39

40. JJD Réunion Infrastructure MEUST 31/01/2011
Optic: « beam expanded » Seacon-Ifremer
Low cost <10k€
JJD Réunion Infrastructure MEUST 31/01/2011
JJD réunion infrastructure MEUST 31/01/2011

41. JJD 14/02/2011