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Page 1: Reliawind Field StudyReliawind Field Study - Wind Energywindpower.sandia.gov/2009Reliability/PDFs/Day2-13-MichaelWilkinson.… · Reliawind Field StudyReliawind Field Study Michael

Reliawind Field StudyReliawind Field Study

Michael Wilkinson, Garrad Hassan & Partners Ltd

2009 Wind Turbine Reliability Workshop2009 Wind Turbine Reliability WorkshopAlbuquerque, NM, 17-18 June 2009

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Garrad Hassan Around the World• Founded in 1984 in UK• Now have offices worldwide

f• Local understanding informs global perspective

350 professionals25 Offices

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Asset Management and Optimisation Services (AMOS)Services (AMOS)

Performance MonitoringFault diagnostics and forensic analysis of SCADA dataPost-construction energy forecastsO&M adviceWarranty calculationsEnd of warranty inspections

20 GW of operating plant assessed worldwide

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Introduction to Reliawind

Page 5: Reliawind Field StudyReliawind Field Study - Wind Energywindpower.sandia.gov/2009Reliability/PDFs/Day2-13-MichaelWilkinson.… · Reliawind Field StudyReliawind Field Study Michael

Summary of Reliawind•EC funded R&D project•€7.7M total funding

•10 organisations involved•3 years

•€5.5M EC funding

Aims:•Improve general understanding of wind turbine and farm reliability•Develop reliability models specific to wind turbines

•Increase MTBF •Increase availability•Decrease MTTR •Decrease CoE

Important Onshore Critical OffshoreImportant Onshore Critical Offshore

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Summary of ReliawindMain project work packages:1. Field data reliability analysis2. Design for reliability3. Algorithms for condition monitoring4. Proof of concept4. Proof of concept

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Previous Work – Availability

140“Standard” long-term availability

i 97% 50% of wind farm years with

Distribution of annual availability

100

120

year

s

assumption ≈ 97%

Mean = 96 4%

50% of wind farm years with availability 97.5% or higher

60

80

umbe

r of w

ind

farm

y Mean 96.4%

90% of wind farm years with availability of 92.5% or higher

99% of wind farm years with availability of

80.0% or hi h

20

40

Nu higher

0

<75% 76

%

77%

78%

79%

80%

81%

82%

83%

84%

85%

86%

87%

88%

89%

90%

91%

92%

93%

94%

95%

96%

97%

98%

99%

100%

Annual System Availability [%]

Database:Database:• Over 250 wind farms worldwide• All major manufacturers

• Over 1000 wind farm operating years• Operating from 1 to 15 years

Source GH, presented at EWEC 2008

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Previous Work – Reliability

Courtesy of Durham University

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Previous Work

• Previous availability work limited to high level availability and fault information

• Previous reliability work limited by quality of datay y y

• Need better quality data to get better results…

Reliawind Field Study

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Reliawind Field Study Methods

Page 11: Reliawind Field StudyReliawind Field Study - Wind Energywindpower.sandia.gov/2009Reliability/PDFs/Day2-13-MichaelWilkinson.… · Reliawind Field StudyReliawind Field Study Michael

Data Available from a Wind Farm

• 10 minute average turbine and substation SCADA databases

• Fault logs per turbine and substation• Manual records• Work orders• Monthly operational reports compiled by the operator

and or manufacturer

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Reliawind Common Formats

Turbine taxonomyA common approach to describe wind turbines from different manufacturers

DatabaseA common method to store downtime events

d th i i iand their origin

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Reliawind Initial Results

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Results – The Story so FarData sources:• Manufacturers – Consortium members• Owners & Operators – Users’ Working Group

Data added so far:• 290 turbines

240 ind farm months• 240 wind-farm months

Page 15: Reliawind Field StudyReliawind Field Study - Wind Energywindpower.sandia.gov/2009Reliability/PDFs/Day2-13-MichaelWilkinson.… · Reliawind Field StudyReliawind Field Study Michael

Results – Failure Rate

Converter

Generator

Pitch System

G bGearbox

Percentage contribution to overall failure rateData source: turbines from multiple manufacturers

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Results – Downtime

CConverter

Generator

Pitch System

Gearbox

Percentage contribution to overall failure rateData source: turbines from multiple manufacturers

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Results – Reliability Profile

35.0%

40.0%

year] 100%Power Module

15 0%

20.0%

25.0%

30.0%

35.0%

te [failures / turbine / 

40%

60%

80%

Rotor Module

Control UnknownS l M d l

YourSite

Pitch System

0.0%

5.0%

10.0%

15.0%

Failure Rate

0%

20%

NacelleControl Unknown

Drive Train

AuxiliaryEquip

Other

Structural Module

Generator

25.0%

30.0%

35.0%

40.0%

/ Turbine / Year]

60%

80%

100%

Power Module

Rotor Module

Generator

5.0%

10.0%

15.0%

20.0%

Hours Lost [hrs 

20%

40%

Nacelle Control

Unknown

Drive T i

AuxiliaryEquip

OtherStructuralMod le

Pitch System

0.0% 0%

Page 18: Reliawind Field StudyReliawind Field Study - Wind Energywindpower.sandia.gov/2009Reliability/PDFs/Day2-13-MichaelWilkinson.… · Reliawind Field StudyReliawind Field Study Michael

Concluding Remarks• Reliawind addresses the need for a quantitative

measurement and understanding of turbine reliability

• Common standards defined – turbine taxonomy and data structure

• Database populated with data from 290 turbines

• Database growing!

Page 19: Reliawind Field StudyReliawind Field Study - Wind Energywindpower.sandia.gov/2009Reliability/PDFs/Day2-13-MichaelWilkinson.… · Reliawind Field StudyReliawind Field Study Michael

Thank You

[email protected] reliawind euwww.reliawind.euwww.garradhassan.com/services/amos


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