Offshore TIMES · 12. The How? Schematic principle of simulation of the operation and maintenance phase. Weather and Environmental conditions. Financial Model/ Engineering-Capex,

© 2019 Fraunhofer IWES 1© 2019 Fraunhofer IWES 1© 2020 Fraunhofer IWES 1

Kaczenski, Jonas & Schnackenberg, Marco

Offshore TIMESSimulation of logistics concepts for O&M of offshore wind farms

08.07.2020

2© 2019 Fraunhofer IWES 2© 2019 Fraunhofer IWES 2© 2020 Fraunhofer IWES

The Why?O&M costs O&M logistics processes & costs

01

The How?Simulation of the logistics processesInterpretation of the Simulation Results

02

The And?Conclusion03


The Why?O&M costs of an offshore wind farm

34 % O&M CostsSignificant impact on the profitability of offshore wind projects

O&M CostsO&M logistics processes and downtimes of the wind turbines are main cost drivers

Source: NREl 2019

34 %Operation & Maintenance

37%Balance of Plant

19%Turbine

Offshore WindProject Costs

10%Soft Costs


The Why?O&M logistics processes

Source: NREl 2019

OFFSHORELOGISTICS

Transport: Equipment, Personnel and Spare Parts

incl.Calendar Based MaintenancePreventive MaintenanceCondition Based Maintenance

Corrective Maintenance Action for large component replacements

PLANNEDMAINTENANCE

UNPLANNEDMAINTENANCE

LARGE COMPONENTREPLACEMENTS

Medium to long term planningSmall „Loss of production“Prediction of remaining component life timetechnology and preventive costsBest practice approach

Depending on cause planned/ unplanned maintenanceInvolve Large/ Expensive Equipment/ VesselsHigh Potential „Loss of Production“

Short Term reaction requiredLimited planning timeWaiting time for spare partsMedium to High „Loss of Production“Depending on failure ratesC

HA

RA

CTE

RIS

TIC

SD

ESC

RIP

TIO

N


The Why?O&M logistics costs

Operating from a port base

Workboats with support from helicopters

With fixed or floating offshore structure

WORKBOAT-BASED HELI-SUPPORT OFFSHORE BASED

LIM

ITS

1 PLEASE REFER TO “A GUIDE TO UK OFFSHORE WIND OPERATION AND MAINTENANCE” (2013) INCLUDINGTHE USED KEY VISUALS

DISTANCE TO O&M PORT

HS = 1,5m; U = 10m/sWave direction, swellCosts: 1.500 … 3.500 €/d

www.pomaritime.com

U = 20m/sVisibility, clouds, daylightCosts: 48 … 55 €/min

HS = 3,0m, U = 15m/sWave direction, swellCosts: 20.000 … 30.000 €/d

www.fiberline.com www.siemens.com/windpower

UncertaintiesUncertainties about the accessibility, availability and feasibility of work

Logistics conceptCosts due to different vessels and numbers, as well as restrictions

Cost reduction through the optimizationof the O&M logistics


Virtual test system for O&M concepts

The How?Offshore TIMES - Offshore Transport, Inspection and Maintenance Simulation


The How?Schematic principle of simulation of the operation and maintenance phase

Wea

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Definition of the Infrastructure- Layout, Infrastructure location



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s Reliability Module- OWF – Components- Reliability Models - Locations

Normal Operation OWF- Wind Turbine Control/ Components


Weather ConditionsEarnings

Loads



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s Reliability Module- OWF – Components- Reliability Models- Locations

LogisticConcept/Infrastructure


Personnel

Spare Parts

Vessels


Loads

Resources


Approach to optimization



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Maintenance Works (simulated)


Personnel

Spare Parts

Vessels


AccessibilityDuration

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rese

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eso

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Pro

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Exec

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Resources




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Control Center- Decision Center- Resource Planning



Personnel

Spare Parts

Vessels


AvailabilityProperties

Weather Forecast


Loads

Work Order

rese

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Exec

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Fin

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, Op

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Pro

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Reliability Module- OWF – Components- Reliability Models- Locations


Control Center- Decision Center- Resource Planning



Personnel

Spare Parts

Vessels


IncomeOperational Cost

AvailabilityProperties

Operation TimeCosts

Weather Forecast


Loads

Work Order

rese

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rel

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R

eso

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Pro

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Exec

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Wo

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CA

PEX

Gen

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Op

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lCo

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Resources



Layout: Amrumbank West

80 WTG

Weather data: ERA 5 (2008-2017)

Reliability model FhG IEE (WindPool)

Base port: Heligoland

Logistic concept: 2 CTVs

The How?Reference Offshore-Windfarm : Amrumbank West

Base port: Heligoland

OWP: Amrumbank West


Off

sho

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IMES

–Si

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The How?Comparison of energy production of different logistics concepts – example results

2009 2010 2011 2012 2013 2014 2015 2016 2017

Scenario: 2 CTVs

Project durationEn

erg

yp

rod

uct

ion

pe

r tu

rbin

e[M

Wh

]

Scenario: 4 CTVs

Legend:2 CTV 4 CTV P5 – P95 P50

Failure Example


OffshoreTIMES is a modular simulation tool which can be adapted to the customers needs

Logistics concept optimization of offshore wind farms

Comparison of logistic concepts

Innovation assessment and their impact on the O&M processes

The And?Conclusion & the use of Offshore TIMES


Thanks a lot for your attention!


Federal Republic of Germany

Federal Ministry for Economic Affairs and Energy

Federal Ministry of Education and Research

European Regional Development Fund (ERDF):

Federal State of Bremen

Senator of Civil Engineering, Environment and TransportationSenator of Economy, Labor and PortsSenator of Science, Health and Consumer ProtectionBremerhavener Gesellschaft für Investitionsförderung und Stadtentwicklung mbH

Federal State of Lower Saxony

Free and Hanseatic City of Hamburg

AcknowledgementsFraunhofer IWES is funded by:

Foliennummer 1Foliennummer 2Foliennummer 3Foliennummer 4Foliennummer 5Foliennummer 6Foliennummer 7Foliennummer 8Foliennummer 9Foliennummer 10Foliennummer 11Foliennummer 12Foliennummer 13Foliennummer 14Foliennummer 15Foliennummer 16Foliennummer 17Foliennummer 18

Documents

Offshore TIMES · 12. The How? Schematic principle of simulation of the operation and maintenance phase. Weather and Environmental conditions. Financial Model/ Engineering-Capex,