Offshore Wind Foundations: Digital Tools for Lifecycle Management

Seoul, South Korea

May 2019

At a glanceArup is a leading advisory and engineering firm in the global infrastructure market

$2.05 bn

40+Countries where deals have been closed, since 2013

290Deals closed since 2008

Over

$230 bn +in successful transactions since 2008

>70Years of delivering successful engineering design projects around the world

13,840Staff working in 40 countries

2018 turnover

2017Top advisor in infrastructure investment for the past 20 years

2014Global Infrastructure Technical Adviser of the year

2016Technical Advisor of the Year of Europe and Africa

2018Technical Advisor of the Year by Value ($25bn)

Arup Credentials in offshore wind

Asia

# Wind Farm MW Developer Country

1 Hai Long 1,000 Confidential Taiwan

2 Yunlin 640 Confidential Taiwan

3 Akita Port 55 Confidential Japan

4 Nojiro Port 88 Confidential Japan

5 Kashima Port 30 Confidential Japan

6 Mutsu Bay 800 Confidential Japan

2

1

6

5

4

3

Arup Credentials in offshore wind

Europe

# Wind Farm MW Client Countr

y

1 Anholt 400 Dong Energy Denmark

2 Borkum Riffgrund 1 277 Dong Energy Germany

3 Burbo Banks Extension 254.2 Dong Energy UK

4 Galloper 336 RWE Innogy UK

5 Gemini 600 Siemens/ Northland UK

6 Global Tech 1 400 Global Tech 1 Germany

7 Gunfleet Sands 1&2 172 Dong Energy UK

8 Gwynt y Mor 576 RWE Innogy UK

9 Horns Rev 2 209 Dong Energy Denmark

10 London Array (LTA OFTO) 630 Dong Energy UK

11 Lynn and Inner Dowsing 194 GIB UK

12 Meerwind (M&A and Lender scope) 288 WindMW UK

13 Nordsee 1 332RWE Innogy/

NorthlandGermany

14 Nysted 166 Dong Energy Denmark

15 Rampion 400 EON UK

16 Rhyl Flats 90 RWE Innogy UK

17 Rodsand 207 EON Denmark

18Sheringham Shoal (DD + LTA

OFTO)317 Statoil UK

19 Walney 1 & 2 (LTA OFTO) 368 Dong Energy UK

20 West of Duddon Sands (LTA OFTO) 389 Dong Energy UK

21 Westermost Rough 210 Dong Energy UK

22 Dudgeon 402 CRP UK

23 Race Bank 573.3 Confidential UK

24 Triton Knoll 860 Confidential UK

25 Neart Na Gaoithe (LTA) 448 Confidential UK

26 Bard 400 Confidential Germany

27 Veja Mate 402 Confidential Germany

28 Gode Wind 1 330 Confidential Germany

1

9

8

6

10

11

12

13

14

15

16

17

18

20

21

23

24

25

2627

28

19

3

22

52

4

7

Offshore Wind Foundations: Digital Tools for Lifecycle Management

Agenda

1. The Value of Offshore Wind Foundation Life Extension

2. Arup Capability in Offshore Wind Foundation Assessment + Design

3. An Integrated Tool for Lifecycle Management

4. Conclusion: Arup’s Unique Offering

Offshore Wind Foundations: Digital Tools for Lifecycle Management

The Value of Offshore Wind Foundation Life Extension

• The foundation is one of the few irreplaceable

items on an offshore wind asset. Considerable

value can be realised by justifying life extension.

• We have demonstrated life extension on 3 wind

farms by:

• ‘Counting’ accumulated fatigue with strain

gauge data on a single asset.

• Including wave loading below the waterline.

• Forecasting future damage and extrapolating

across the wind farm based on wind data from

the nacelle.

• Fatigue damage of

foundations controls

operational life

• Arup has completed

several projects using

strain gauge data to

‘count’ fatigue damage

Offshore Wind Foundations: Digital Tools for Lifecycle Management

Arup Capability in Offshore Wind Foundation Assessment

• We are currently undertaking internally funded research to investigate the potential of using machine

learning to enable ubiquitous SCADA data to predict damage on substructures without the requirement

for strain gauge instrumentation.

• ‘SCADA’ performance data

– available on all turbines

• Strain gauge data – installed on

a small number of foundations

Can we train a model which allows SCADA data to

be used as a proxy for strain gauge data?

Offshore Wind Foundations: Digital Tools for Lifecycle Management

Arup Capability in Offshore Wind Foundation Assessment

• The initial results of this internal research are promising. The trained machine learning model can

predict the accumulated fatigue damage based on SCADA data.

Fat

igue

Dam

age

Time

Recurring Neural

NetworkFATIGUE DAMAGESCADA DATA

TARGET:

(Derived from strain gauge data)

COMPARE & ADJUST MODEL

• Arup has led foundation assessment and

design on UK, Japanese and US wind

farms

• We have developed an ‘expert tool’ to

enable automated selection and sizing

of a range of foundation types with the

most basic information

• This enable efficient development of

design concepts to feed into decisions

for feasibility, planning and investment

Offshore Wind Foundations: Digital Tools for Lifecycle Management

Arup Capability in Offshore Wind Foundation Design

Offshore Wind Foundations: Digital Tools for Lifecycle Management

Spreadsheet input template

for design information

Builds, analyses and extracts

information from SESAM &

GSA models

Generates reports and

dashboards for the designer

3 minutes per design case

from 1 hour

=

+

+

• We have also developed

automation tools for

detailed design enabling

rapid assessment of

structural utilisation

Arup Capability in Offshore Wind Foundation Design

Offshore Wind Foundations: Digital Tools for Lifecycle Management

An Integrated Tool for Lifecycle Management

Planning + Concept

DesignDetailed Design Construction

In-Service

ManagementDecommissioning

‘As Designed’ ‘As Built’ ‘As Is’

Automation tool: technical insight In-service measured data and inspection: as-is condition

The combination and delivery of automation tools with in-service data would enable

continually updated structural information: more insights + reduced effort

Continuously Updated Input Data

• SCADA (direct link or store)

• Continuous strain gauge measurements

• Scour measurement

• Corrosion surveys + weld NDT results

• Met mast + wave buoy data

• Inspection and maintenance records

• Design documentation

The tool would enable more efficient management of offshore wind foundations, including:

• Current condition status.

• Remaining life.

• Cost/life benefit of future maintenance.

• Required inspections.

• Potential for re-powering.

Offshore Wind Foundations: Digital Tools for Lifecycle Management

An Integrated Tool for Lifecycle Management

Current fatigue

damage level

Cu

rren

t co

rrosi

on

con

dit

ion

Design documentation and inspection records

SCADA and strain gauge raw data Event Assessment:

• Scour Event Depth

• Corrosion Event

• Turbine Variation

GE 12MW

Halide

MHI Vestas

9.5MW

MHI Vestas

4.2 MW

UK Wind Farm | A04 Turbine | Foundation Condition Summary

15.03.2019 11:26

A01 A02 A04 A04

A05 A06 A07 A08 A09

A10 A11 A12 A13

Confidential UK Wind Farm | Foundation Condition Summary

15.03.2019 11:26

Offshore Wind Foundations: Digital Tools for Lifecycle Management

Conclusion: Arup’s Unique Offering

Why Arup?

• We have demonstrated life extension using measured

data on several wind farms

• We have developed ML/AI methods to predict

foundation life from SCADA data

• We have developed automated tools for both the

Concept and Detailed design of offshore wind

foundations

We are uniquely placed to combine our automated

engineering tools with in-service data to obtain more

value from the lifecycle management of offshore wind

foundations