Offshore Substation Trend in Europe - Asia Wind€¦ · Busan-Geoje Fixed Link, Korea 15 MAY 2019...

15 MAY 2019

COWI ASIA WIND CONFERENCE SEOUL1

Offshore Substation Trend in Europe

Ting Sie ChuiTechnical DirectorTSCI@COWI.COM, +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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COWI ASIA WIND CONFERENCE SEOUL12

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