15 MAY 2019
COWI ASIA WIND CONFERENCE SEOUL1
Offshore Substation Trend in Europe
Ting Sie ChuiTechnical [email protected], +447860837616
AGENDA
15 MAY 2019
COWI ASIA WIND CONFERENCE SEOUL2
INTRODUCTION
› COWI
DISCUSSION POINTS
› Trends from Europe’s Substation Project
› Reasons for Cost Overrun in Substation Project
› Key Take Away for the Asia Market
COWI – A Global Company with Office in Seoul
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World Leading Consultant,
With 360 Degree Services
90 years
of history
7,100People
Danish
Company
150OW engineers
20GW+
Offshore Wind
60+
Offshore ProjectsClient
Representative
Project Development
Construction Support
Asset Management
More than 800 Onshore and Offshore wind power projects in 68 countries
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Africa:
Asia:
Middle East:Australia:
Central and South America:
Europe:
North America:
Egypt, Eritrea, Kenya, Malawi, Morocco, Somalia, South Africa, Swaziland, Uganda.Malaysia, China, India, Japan, Pakistan, South Korea, Philippines, Sri Lanka, Thailand, Taiwan.Oman, Jordan, Saudi Arabia.Australia.Bolivia, Brazil, Colombia, Costa Rica, Dominican Republic, El Salvador, Grenada, Guatemala, Jamaica, Nicaragua, Peru, Uruguay. Belgium, Bosnia, Bulgaria, Croatia, Denmark, England, Estonia, Faroe Islands, Finland, France, Georgia, Germany, Greece, Ireland, Italy, Latvia, Kosovo, Lithuania, Macedonia, Netherlands, Norway, Poland, Portugal, Romania, Russia, Scotland, Serbia, Spain, Sweden, Turkey, Wales.Canada, Mexico, USA.
Wind Resource Measurements
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› Wind monitoring
› Wind resource assessments
› Data screening
Feasibility Studies On and offshore
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› Wind resource assessment
› Grid impact assessment
› Environmental impact assessment
› Transport study
› Estimation of Capex and OPEX
› Regulatory framework
› Financial analyses
Owners/Lenders Engineer
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› Development strategies and procurement› CoE & optimum WTG technology
› Contract negotiation› Supply and installation agreements
› Civil works
› O&M agreement
› Supervision and cost control
› Liaison with WTG manufacturer
Environment and Permitting: On- and offshore
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› Environmental impact assessments (EIA)
› Permitting
› Birds, bats and mammals
› Visualisation of wind parks
› Noise measurement
Calculations and measurements on turbines
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Accredited measurements
› Load measurements
› Safety tests
› Power curves
› Noise
Calculation
› Aeroelastic simulations
› Strength and finite element calculations
Construction Supports
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› Offshore Transportation Support
› Offshore Installation Support
Grid Studies
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› Load flow analyses
› Transient and dynamic analyses
› Grid code compliance
Busan-Geoje Fixed Link, Korea
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Korea
Typhoon and seismic design experience used for current offshore wind design
General types of foundations
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Monopile
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› London Array offshore wind farm
› Rentel offshore wind farm
› Merkur offshore wind farm
› Hohe See offshore wind farm
› Albatros offshore wind farm
› DanTysk offshore wind farm
› Formosa 1 offshore wind farm
› Formosa Demo
› French 1 offshore wind farm
› French 2 offshore wind farm
DD, UK
DD, Belgium
DD, Germany
DD, Germany
DD, Germany
DD, Germany
DD, Taiwan
DD, Taiwan
DD, France
TDD, France
630 MW, SWP 3.6 MW
300 MW SWP 6 MW
400 MW Alstom 6 MW
500 MW SWP 7 MW
110 MW SWP 7 MW
290 MW SWP 6 MW
150 MW SWP 6 MW
8MW SWP 4MW
Confidential
Confidential
Jacket
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› Wikinger offshore wind farm
› Thornton Bank Phase 2+3
› Ormonde Offshore Wind farm
› Alpha Ventus offshore wind farm
› Le Carnet
› French Project no.1
› French Project no.2
› Taiwan Project no.1
› Taiwan Project no.2 DD, Taiwan 120MW+ Confidential
› UK Project DD, UK 700MW+ Confidential
DD, Germany
DD, Belgium
DD, UK
DD, Germany
DD, France
TDD, France
TDD, France
FEED, Taiwan
350 MW Areva 5MW
240 MW RePower 6MW
150 MW RePower 5MW
30 MW RePower 5MW
5 MW Alstom 6MW
Confidential
Confidential
500MW+ Confidential
Gravity Base
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› Thornton Bank offshore wind farm
› Kaarehamn offshore wind farm
› Nysted offshore wind farms
› Rødsand 2 offshore wind farms
› Japanese Offshore Wind Farm
DD, Belgium
DD, Sweden
DD, DK
DD, DK
Concept, Japan
RePower 5 MW
Vestas 3 MW
SWP 2.3 MW
SWP 2.3 MW
Confidential
Offshore Substation
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› Mejlflak ow
› Wikinger oss
› Arcadis ost1 oss
› Borkum riffgrund west oss
› Innogy nordsee 1 oss
› Hohe see oss
› Horns rev 3 oss
› Kriegers flak 1&2 oss
› Rødsand b oss
› Albatros otm
› Walney oss
› Wind farm project in India
› China substation advise
Client representative
Topside
Jacket and topside
Jacket and topside
Jacket and topside
Jacket and topside
Jacket and topside
Topside
Gravity base
Monopile
Electrical
Client representative
Client representative
Concept design
Concept design
Concept design
Concept design
Concept design
Concept design
Detailed design
Detailed design
Detailed design
Detailed design
Detailed design
Concept design
Client advice
Denmark
Germany
Germany
Germany
Germany
Germany
Denmark
Denmark
Denmark
Germany
United Kingdom
India
China
18
Offshore Substation Trends in Europe
15 MAY 2019
COWI ASIA WIND CONFERENCE SEOUL
Offshore Substation Trends in Europe
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COWI ASIA WIND CONFERENCE SEOUL19 Pictures source from offshorewind.biz
General Observations
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There is no consistent in requirements
›Layout / Arrangement
›Helideck/maintenance strategy etc
There are two key different topside arrangement:
› Traditional multilayers topside
› Single layer topside
Substation capacity is getting larger
› AC Substation > 1.2GW+
› HVDC Substation > 1.5GW+
Traditional AC Topside
Siemens Offshore Transmission Topside
Substation Ownership
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Transmission Model is very important! In Europe, there are two key models of ownership to transmission asset:
Responsible for build
Responsible for Operate Responsible for Maintenance
Third Party Ownership
Minimal specification, i.e. Lower initial cost but higher cost during operation
Model 2 – Wind Farm Developer
Responsible for Build
Responsible for Operate
Responsible for Maintenance
Want a perfect Topside, higher cost
Model 1 – Grid Owner
Grid Owner
Risks of different types may develop in connection with offshore substations
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HUMAN RISKS › Fabrication work
› Working at heights› Lifting operations
› Offshore work› Planned/unplanned
works› Work overboard
MAINTENANCE STRATEGY
› Means of access › Material selection› Escape strategy
DESIGN RISKS › Topside weight› Seabed geology› Challenges environment,
e.g. earthquake, typhoon etc
ENVIRONMENTAL RISKS
› Waste & spill› Disturbance of marine life
OPERATIONAL RISKS › Fire› Explosions› Weather risks› Maintenance risks
EXECUTION RISK › Installation› Fabrication› Schedule› Cost
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Reasons of cost overruns
How Do We Address the Cost ‘Overruns’
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› Full understanding of complexity of Integration in Substation Project
› Frontload project, i.e. invest the project from beginning
› Have competent (experienced) consultant, contractor, fabricators etc to work on the project
› Knowledge of standards, rules and regulations
› Ability to procure and manage larger subcontracts
› Understanding of offshore works and activities
Technical Developments in Offshore Substation
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› Can monopile be used for 40m+ water depth?
› Have we future proofed the substation asset?
› Sufficient redundancy
› Repowering
› Life extension
› Trends on onshore wind and O&G
› Do we need to have battery storage offshore, on the substation?
› Will integrated substation with turbine a practical solution?
› Will floating substation be a reality in the next 3-5 years?
THANK YOU!
2615 MAY 2019
COWI ASIA WIND CONFERENCE SEOUL
Thank You