© ABB-EWEC 2006 ATHENS 1 - 01/03/06 EWEC 2006 Athens The Challenges of Offshore Power System...
-
Upload
cecily-flowers -
Category
Documents
-
view
214 -
download
0
Transcript of © ABB-EWEC 2006 ATHENS 1 - 01/03/06 EWEC 2006 Athens The Challenges of Offshore Power System...
© A
BB
-EW
EC
200
6 A
TH
EN
S 1
-01
/03/
06
EWEC 2006 Athens
The Challenges of Offshore Power System Construction
Peter Jones
Lars Stendius
ABB
© A
BB
-EW
EC
200
6 A
TH
EN
S 2
-01
/03/
06
Troll A Platform
Norway Sweden
UK
Troll A delivers gas to Kollsnes from all the field platforms
70km offshore
47% of Norway’s gas reserves
28% of Statoil’s total own production (oil and gas)
Europe’s biggest offshore gas field in production providing 15% of Europe gas.
© A
BB
-EW
EC
200
6 A
TH
EN
S 3
-01
/03/
06
Troll A Platform
Total weight: 678 500 tons
Total height: 472m
Above water 103m
The largest man made structure moved across the surface of the earth as a complete unit
Main objective with the pre-compression project was to increase the production capacity on Troll A
© A
BB
-EW
EC
200
6 A
TH
EN
S 4
-01
/03/
06
Customer Values
Reliable power supply
Simple design incorporating redundancies
Power quality control
Operational Versatility
Black Start Capability
Remote onshore connections without the need for grid reinforcement
Expandable modular systems that can easily be expanded to a multi-terminal system
© A
BB
-EW
EC
200
6 A
TH
EN
S 5
-01
/03/
06
Customer Values
Robust light-weight, oil-free cable system
Simplified platform design
Compact and low weight
Reduced design weight to allow onshore assembly
Short installation and implementation timescale
Savings from reduction in Green House Gas Emissions
© A
BB
-EW
EC
200
6 A
TH
EN
S 6
-01
/03/
06
Customer Values
Savings from reduced need for offshore manning
Remote operation
Significantly lower maintenance
Health Safety and Environmental impact
Removal of risks associated with gas turbines
Noise suppression from enclosed equipment
© A
BB
-EW
EC
200
6 A
TH
EN
S 7
-01
/03/
06
Very High Voltage Motor4-pole, 40MW0 - 63 Hz
56kV
Troll A
SM
70 km+/- 60kV
HVDC Light
132kV
Kollsnes
~
=
=
~
Troll A HVDC Light® – power from shore
© A
BB
-EW
EC
200
6 A
TH
EN
S 8
-01
/03/
06
Troll A HVDC Light® – power from shore
Land based converter station at Kollsnes
Modular converter unit on the Troll A platform
Two HVDC Light® transmissions units
2 x 40 MW nominal mechanical output
± 60 kV DC transmission voltage
70 km submarine cable
© A
BB
-EW
EC
200
6 A
TH
EN
S 9
-01
/03/
06
Very High Voltage Motor for Compressors
56kV Very High Voltage Motors used to drive compressors
Variable frequency operation for smooth start and operation
Weight savings, no platform power transformer required
Completely oil-free concept
© A
BB
-EW
EC
200
6 A
TH
EN
S 1
0 -
01/0
3/06
HVDC Light® Submarine Cables
70km ABB sub sea cable
Operating at +/-60kV DC
Robust polymeric cables
Lightweight design which simplifies installation
Very long single lengths of cable loaded directly onto vessels from factory
Oil free design significantly reduces environmental impact
© A
BB
-EW
EC
200
6 A
TH
EN
S 1
1 -
01/0
3/06
HVDC Light® Onshore Converter Station
Compact converter building
Pre-assembled and tested equipment such as valves and control system helped to reduce delivery and installation timescales
Fulfills high safety requirements for a gas plant installation
© A
BB
-EW
EC
200
6 A
TH
EN
S 1
2 -
01/0
3/06
Installation of HVDC Light® Platform Module
Installation commenced with auxiliary equipment on the first floor
Second and third floor arrives in assembly area
© A
BB
-EW
EC
200
6 A
TH
EN
S 1
3 -
01/0
3/06
Installation of HVDC Light® Platform Module
Semiconductor valves suspended from the ceiling in order to withstand platform movement
AC equipment installed on third level
The module is then fully enclosed to maintain a weather proof controlled environment
© A
BB
-EW
EC
200
6 A
TH
EN
S 1
5 -
01/0
3/06
Installation of HVDC Light® Platform Lift
Completed module lifted gently into position by a large sea barge crane.
The module is lowered onto a pre-fabricated platform extension unit
The module is secured into its final position.
© A
BB
-EW
EC
200
6 A
TH
EN
S 1
6 -
01/0
3/06
Lessons Learned At Planning Stage
High focus on finding an environmental appropriate solution
Early selection of a suitable electrical solution (HVDC light technology)
Sufficient time to study, mature and qualify the technical solution
Building trust through open, and good cooperation.
© A
BB
-EW
EC
200
6 A
TH
EN
S 1
7 -
01/0
3/06
Lessons Learned At Execution Stage
Continued open and good cooperation
Common and joint approach to problem solving
Ability and willingness to find win-win solutions on difficult technical, commercial and contractual challenges.
© A
BB
-EW
EC
200
6 A
TH
EN
S 1
8 -
01/0
3/06
Summary of Lessons Learnt
Very high focus on Safety
When introducing innovative solutions early and close involvement with the client to study and understand the new technical solutions is essential.
Involve highly qualified personnel with high integrity, in problem solving
Involve local knowledge and establish good relations with the relevant industry experts
Statoil and ABB team pictured after successful commissioning of Troll A
© A
BB
-EW
EC
200
6 A
TH
EN
S 1
9 -
01/0
3/06
Offshore Power Supplies for Renewables
ABB has a proven concept for power to and from shore
High reliability, high voltage power supplies offshore are possible
Greater understanding of technical risks
Experience and lessons learnt are transferable to the offshore wind industry