Wind R&D Seminar Deep Sea Offshore Wind Challenges and ... · Contact person:...
15
Wind R&D Seminar – Deep Sea Offshore Wind Challenges and Design of Offshore Substations Christer Olerud Trondheim 20.01.2011 1
Transcript of Wind R&D Seminar Deep Sea Offshore Wind Challenges and ... · Contact person:...
Wind R&D Seminar – Deep Sea Offshore Wind
Challenges and Design of Offshore Substations
Christer Olerud
Trondheim
20.01.2011
1
New large Nordic company
2
Offshore wind farm overview
3
Offshore substationOffshore wind farm Land connection point
Cable to shore3-phase ACg o o d t e c h . n o
Offshore wind = multidiscipline industry
4
Main Challenges
Location of offshore substation
Number of offshore substations
Infield cable pattern and choice of cable types
Offshore substation layout
Reactive power compensation
Grid connection
Total electrical system
5
Inter array cable network
Optimizing inter-array
cable network
1 or 2 substations,
inside or outside wind
farm area
Radials or loops
Cable sizes
6
WES – Wind Energy Simulator
7
Offshore substation layout and equipment
Cooling of transformers *
Switchgear
Cable pull-in
Bus ducts *
8
Accommodation
External cladding
Optimized layout
Installation *
Main transformers
9
160 MVA transformer from ABB
GIT: Gas insulated transformer (Toshiba)
Offshore substation, bus ducts
10
Offshore substation, installation
11
http://www.scaldis-smc.com http://www.scaldis-smc.com
Offshore substations
12
Reactive compensation
13
Offshore substationOffshore wind farm Land connection point
Cable to shore3-phase ACg o o d t e c h . n o
Wind turbine
(turbine manufacturer)
Offshore substation
(wind farm owner)
Onshore grid
(grid owner)
How to optimize ? Demands from grid owner (grid code)
Placement of equipment
Grid connection
PCC (Point of Common Coupling)
14
OSS
Onshore coupling point
OWTs
External grid
PCC definition a
PCC definition b
PCC definition c
a) at connection point onshore at the grid
coupling point
b) at high voltage busbar at the OSS
c) at the OWT terminals
Capability in the onshore transmission grid
Thank you for your attention!
15
Offshore substationOffshore wind farm Land connection point
Cable to shore3-phase ACg o o d t e c h . n o
Thank you for your attention!
Contact person: [email protected]
