1. Status, benefits and challenges of Electrification by Power from Shore
Trygve Iversen, ABB AS – OGP, , Bellona Seminar
Status, benefits and challenges of Electrification by Power from Shore
© ABB Group
April 21, 2017 | Slide 1 1

2. Electrification
Advocate and develop economical and HSE sensitive solutions for offshore installations
How
Studies /feasibility
Electrification (power from shore)
Automation
Remote Diagnostics/Condition based maintenance
Maximize technology utilization to minimize OPEX by moving the personnel on-shore
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3. Power from (to) Shore solutions
HVDC
HVDC AC
HVDC AC
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4. “Classic” (Radial Feed) Power from (to) Shore
E-On
Wind farm
Troll, Valhall, Luva, + +
Oil Platform
HVDC
HVDC
Station
offshore
HVDC
>200MW
>100km
Gjøa, Goliat, Halul, + +
HVDC
>50MW
>150km
Oil Platform
HVAC
HVAC
<150MW
<150km
Onshore
Converter
Onshore
Converter
Onshore
Sub Station
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April 21, 2017 | Slide 4
onshore

5. Offshore Grid Multi-terminal HVDC Light solutions (Ring Net)
Wind farm
Wave farm
Platform DC
Wind farm
Platform DC
Platform AC
Platform AC
Hosted on platform or buoy
Platform DC
Onshore
Converter
onshore
Onshore
Converter
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6. Technology Selection: GT vs. AC vs. DC
Power
(MW)
Distance
(miles)
AC Transmission
DC Transmission
Gas Turbines
An Example of
Economical Window of
Opportunity for Power From / To Shore
Transmission from land to platform
HVAC or HVDC?
AC+cables (”1kV per km”). Capacitive current 3 times full load active current at 132kV AC.
There is already 45kV/15MW ac cable installed. Pmax<5MW today.
DC: CSC or VSC?
There were many topologies considered.
No generation in receiving end.
Difficult to commutate CSC (only if machine does it => transmission and vsd in one, but too low voltage).
Coordinated control of rect/inverter necessary, but no communication land<=>platform.
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7. Business Process – Early Involvement / Studies
Market Shift to system approach
The most critical decisions are made early
Secure best information for optimal decisions
System approach
early start
Product suppliers responds to RFQ here
Feasibility
Concept
Pre Feed
Feed
Basic/
Detailed Design
/FAT
Installation/
Commissioning
Start-up
Operation
© ABB Group
April 21, 2017 | Slide 7
All Electric
decision
MEV decision
Products and services

8. Power From Shore Delivered
Statoil Troll, HVDC-Light Compressor drives, 2x40MW, ca. 80km
Statoil Gjøa, AC Power, 40MW, 100km, 90kV
Under Delivery
BP-Vallhall redevelopment, HVDC, 78MW, 292km (Revamp)
E.On Windpower hub, HVDC, 350MW, ca 200km incl onshore (power to shore!)
In pursuit
ENI-Goliat, MW, 90km, HVAC
Studies ABB has participated in recently:
Shell Draugen redevelopment, HVDC or AC, 60MW, 60km
Statoil & Others -Halten Banken electrification, HVDC and HVAC
In concept / feed
Conoco-Phillips Ekofisk –HVDC (Revamp)
Qatar Petroleum, PS4-platform, 25-30MW, 80km, 60-66kV (AC)
Qatar Petroleum, Halul Oil Terminal, MW, AC!
Saudi Aramco, Safaniyah
Statoil, Mariner & Bressney
Statoil, Gudrun (Platform to Platform, i.e. Sleipner to Gudrun)
Statoil, Sleipner (50/60Hz converter –Platform to platform)
(Statoil-Shell-Total, Norskehavet (to start end 2009) –Multi terminal HVDC and HVAC)
Statoil-Luva HVDC
Abu Dabi, Das Island
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9. Troll HVDC
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10. Off shore power supply .. Troll
Troll, HVDC-Light
Pre-Compressors
2x40MW, ca. 80km
In operation 2005
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11. Valhall HVDC
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12. Valhall Description Main data Status
Lista
Description
One HVDC light station off-shore and one on-shore
292 km HVDC Cable
Main data
P = 78 MW
UDC = 150 kV
Status
Onshore station in operation
Offshore module being installed
Commercial operation 2010
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13. Valhall – PFS – Technical solution
Phase Reactors
Transformer
Valves
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14. Eon Netz Wind Power to Shore
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15. EON 2 off shore cluster 128 km sea cable 75 km land cable
400 MW off shore
convertor
128 km sea cable
75 km land cable
In operation 2009 !!
New technologies for grid expansion can offer renewable energy:
Location on best production sites.
Access to the market
Back up power
New technologies will also improve the grid instead of degrading the grid by improved voltage, frequency and reactive power control
Historically every developer planned a network-connection for each wind farm
More than 20 cable connections (AC&DC) through the Wattenmeer were planed
Since 1st of January `07 the TSOs are responsible for the network connections. E.ON Netz in the North-Sea.
E.ON is planning 4 clusters
Immediate reaction from TSO:s
400 MW convertor
© ABB Group
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16. Gjøa HVAC
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17. Gjøa High Voltage AC 40MW, 100km In operation 2010
Similar projects underways
Goliat
Halul-Qatar
Al Mojan-Qatar
Safaniyah-Saudi
(Abu Dabi)
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18. Middle East -Electrification
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19. Cable Projects in Qatar
Halul Island
Ras Lafan
PS 4(QP)
25-30 MW
50/60 HZ
66kV
100 MW
HVAC
132 kV
80-90 km
100 km
Al-Morjan(Qxy)
Existing Cable
PS 2 QP
PS 3
Al-Khalij
Total
Future
Cables
Handled
by ABB NO OGP
as a system delivery
© ABB Group
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20. Saudi Arabia -Safaniyah
Customer
EPC’s : McDermott, NPCC
End-user:
Consultant:
Overall Project Scope
Meet the Crude Program production and Maximum Sustainable Capacity (MSC) targets for the Safaniyah Field of 1,300 MCBD by Increase transportation capacities. Install new ESP’s
Project Location
Safaniyah is located in the Northern Area of Arabian Gulf
© ABB Group
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21. Safaniyah KSA PROJECT SCOPE Offshore Onshore
Country ; KSA
Safaniyah is the largest offshore oil field in the world.
Project name: Safaniyah Crude Gathering upgrade
Customer: EPC’s
End-User: Saudi Aramco
PROJECT SCOPE
GOSP 4
TP-17
TP-19
69 kV
69 kV
TP-20
New Facilities
910
Upgrade & electrification
656
470
646
930
348
Electrification
940
Existing
15 kV
TP-18
230 kV
GOSP 3
243
275
115kV
Aux
Offshore
TL-11
This project consists of onshore and offshore facilities.
The onshore facilities include modification of Saudi Electrical Company owned power plant and laying new 380 KV overhead powerline connecting to new 380/230 kv onshore substation. In addition SEC will lay 230 KV overhead powerline from the new 230 kv substation to GOSP-1
SAPMT will built a new Onshore 115kv substation within SFNY GOSP-1 and 230kv and 115 kv overhead power lines connecting to new transition yard in preparation for offshore connections.
Offshore Tie-In platform number 18 will be upgraded and electrified. The upgrade includes the fabrication and installation of new upper deck and installation of switchgear and transformer to feed 15kv power to the existing wellhead platforms.
Laying 115kv Offshore submarine cables totaling 40 km from SFNY GOSP-1 to TP-18.
Upgrade and electrification of five (5) recently designed wellhead platforms, the mezzanine decks exist such that new equipment (VSD’s& transformers) is installed offshore. Laying and connecting 15kv submarine cables OF approximately 25 km from Tie-platform 18. And laying offshore crude gathering subsea pipelines from these existing wellhead platforms to Tie-in platform number 18.
Upgrade and electrification of four (4) existing old designed wellhead platforms, adding mezzanine decks on three platforms, installation of auxiliary platform for the fourth platform. Total scope weight is 1,350 tons. In addition, 4 lateral pipelines to be rerouted the flow to SFNY TP-18.Plus laying 15kv submarine cables of approximately 20km from TP-18.
Fabrication of New TP-20, which will be the largest ever built in Saudi Aramco offshore field. The deck weighing approximately 6,000 tons which exceeds barge carne lifting capacity. This requires special installation technique called the float over. This is in order to install the facility safely in Brownfield area.
Laying 230kv Offshore submarine cables totaling 48 km from SFNY GOSP-1 to TP-20. this cable will be the largest ever manufactured for Saudi Aramco. We have conducted a study in coordination with CSD to develop the required specification for this cable and set the 230kv cable standard for Saudi Aramco.
Laying 69kv of sub sea cables approximately 15 km from TP-20 to existing TP-17 and TP-19.
Laying Turnkline 11 from TP-20 to onshore SFNY GOSP-1 (50 kilometers long and 42” diameter in size) and transfer line (1.2 kilometers and 20” diameter size) between TP-20 and SFNY 920.
As we can observe from the size and complexity of this project which requires enormous interface and coordination efforts between all project parties . The shear number of marine vessels operating simultaneously will pose logistical challenges. The shallow water near shore will pose both logistical and technical challenge.
Further, the field condition is such that there are several technical issues to be resolved such as the use of 230 kV submarine cable. This will be the first installation of 230 kV submarine cable within Saudi Aramco.
In comparison to recently completed project, BI-0047, North Safaniya Artificial Lift Project; the size of BI-0642 is approximately four times in scope and cost. The BI 642 is also larger than the recently awarded Karan Gas Project. TY VS
SFNY GOSP-1
Onshore
115 kV O/H
SA 115 kV
SEC Maaden
230 kV O/H
SEC 230 kV
380 kV O/H
© ABB Group
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22. Concept Krieger’s Flak
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23. Kriegers Flak, individual cables
Classic issue involving multiple countries
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24. Kriegers Flak, “Supergrid” concept
VSC
Bentwisch/Guestrow
KF 1, 330 MW
1100 MW
KF 2, 640 MW
100 km
Baltic 1
50 MW
11(55) +121 km
11+60 km
Barsebäck
±300 kV DC
BWL
KF 3, X MW (Option)
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25. Concept Super Grid
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26. Supergrid concept (Vision)
Main concept, combine:
Integration of renewable energy
Interconnections for trading
Security of supply
Benefits
Reduced investment
Increased trading capacity
Back-up power, e.g. hydro power can support wind power
Large geographic area gives more stable production
© ABB Group
April 21, 2017 | Slide 26

27. WG Offshore grid Vision 2020 – an offshore grid enabling Task
Offshore wind parks
Power supply to oil fields
Energy exchange between markets
Ancillary services (freq control ++)
Task
Describe technology status
Describe ambitions towards an off shore grid
Describe R&D challenges
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28. Opportunities and Challenges
Technology is available, no significant technology gaps
More compact HVDC solutions possible (reduced installed costs, 2 years to develop)
Challenges:
Time (not long until 2020)
Projects take time, typically 5-8 years from concept to operation
Get started!!!
Production limits
Cables
Build additional production lines (3-5 years)
Engineering resources
Limited supply of qualified engineers
Shift resources from other areas (2-4 years)
© ABB Group
April 21, 2017 | Slide 28