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ESTABLISHING A COMMON DATABASE FOR WIND TURBINE FAILURES
Monitoring Offshore Wind Energy Use in Europe - Offshore~WMEP
Stefan Faulstich, Paul Kühn, Sebastian Pfaffel, Philipp Lyding Fraunhofer Institute for Wind Energy and Energy System Technology (IWES)
© Fraunhofer IWES
Monitoring Offshore Wind Energy Use in Europe - Offshore~WMEP
Introduction
Motivation
WMEP
Offshore~WMEP
Background
Different concepts
Other activities
EVW-project
IEA-Task 33 “Reliability data”
Conclusion & Outlook
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Introduction Motivation Starting Point: Modern wind turbines achieve high availability
Number of faults cause unplanned downtimes high maintenance efforts and costs
Offshore: drop of availability expected
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Scientific Measurement and Evaluation Program („250 MW Wind“ (1989-2006))
193.000 monthly operation reports and 64.000 Incident reports from 1.500 wind turbines
1983
2010
Introduction WMEP
Reliability
Technology development
Learning curves
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Introduction WMEP
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Introduction WMEP
Year of operation??? Turbine type???
For differential analysis distinctions regarding size, technical concepts, site conditions, etc. must be made
WMEP
1453 SWT
>3. year of product ion
527 SWT
1.-3. year of product ion
926 SWT
P < 500 kW
783 SWT
P ≥ 1000 kW
16 SWT
500 kW ≤ P < 1000 kW
127 SWT
asynchronous
584 SWT
synchronous
199 SWT
coast line
102 SWT
highlands
33 SWT
lowlands
64 SWT
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9
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0,00,20,40,60,81,01,21,41,61,82,02,22,42,62,83,03,23,43,63,84,0
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year of operation year of
production
Introduction WMEP
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The project is a follow-up project to the onshore wind energy monitoring program ‘Scientific Measurement and Evaluation Program’ (WMEP) and accompanies the offshore wind energy deployment in Germany
Funded by the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety
Offshore~WMEP Concept
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Core issues
Site-specific offshore conditions
Installation
Energy output
Reliability
Availability
Facility concepts
Operation and maintenance concepts
Investment and operating costs
Offshore~WMEP General monitoring
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Offshore~WMEP Participant specific analyses
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Offshore~WMEP Participant specific analyses
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Offshore~WMEP Participant specific analyses
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Optimization of intervals
Optimization of strategies
LCC prediction
Constitute priorities
Source: IZP Dresden
Offshore~WMEP Participant specific analyses
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an
aly
ses
public group results individual results
Type A Type B Type C
Reliability characteristics
Highly aggregated anonymous Benchmarks
At least 3 different WF
Single wind farm analyses
Maintenance optimisation
+
Offshore~WMEP Concept of confidentiality
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Offshore~WMEP Concept of data acquisition
Event • failure • fault • inspection • repair
Maintenance
Strategy • reactive • time based • condition based • reliability based
Documentation • subassembly • cause • time steps • cost
Archiving • core data (RDS-PP) • in-service data • event data (ZEUS)
Analysis • MTBF, MTTR • weak points • expenses • life cycle cost
Planning • improvement • consolidation • interval opti. • responsibility
Accurate, detailed documentation
Consistent naming of components
Unified description of irregularities and activities
Design
• verification • modification
Use of operating experiences
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Funded by the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety
Task: Knowledge management and maintenance optimization as methodical base for increasing the availability of wind power plants
Other activities EVW (Increasing availability of WTs)
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Other activities EVW (Increasing availability of WTs)
Developing a test and demonstration system
Preparing recommended practices for reliability based maintenance
Technical guidelines / standards (Federation of German Windpower)
Expand common database (onshore and offshore)
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Other activities 65th IEA Topical Expert Meeting TEM (IEA Wind Task 11) International statistical analysis on wind turbine failures
TEM in Kassel / Germany, March 2011: 23 experts from Denmark, Finland, GB, Germany, Netherlands, Norway, Sweden, USA; (16 presentations)
It was decided to launch a new IEA Wind Task on Databases for Wind Turbine Failures
Task Proposal was prepared by Fraunhofer IWES in cooperation with SINTEF, NTNU and Chalmers University of Technology
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IEA Wind Task Proposal – Reliability Data Future work and key questions
Priorities for future work defined at the TEM:
Standardization of the structure databases (DB)
Definition of subassemblies and failures
Level of detail of the DB
Confidentiality and access to the DB
Harmonization of data analysis
Key questions:
Which data are to be collected?
What data are needed for the different analyses?
How to implement a system to collect information in an appropriate, structured, detailed and strongly automated way?
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IEA Wind Task Proposal – Reliability Data Objectives
The objectives of the proposed IEA Task are threefold:
1. Provide an international, open platform for regular and continuous exchange of experience and progress from individual research projects and existing activities on failure statistics on wind turbines.
2. Development of Recommended Practices for Reliability Data during the course of the Task.
3. Identify areas for further research and development as well as standardization needs.
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Potential for availability improvement and for reducing maintenance effort exists
Common database needed due to parameter diversity
Different concepts are necessary
Overall data structure
Standards and definitions
Accessibility of information
Harmonization will take place in the new IEA-Task
Offshore~WMEP is going from concept phase to the first implementation phase database will be filled
Conclusions & Outlook
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Thank you for your attention
Dipl.-Ing. M.Sc. Stefan Faulstich [email protected] Reliability & Maintenance strategies R&D Division Energy Economy and Grid Operation Fraunhofer Institute for Wind Energy and Energy System Technology IWES Königstor 59, 34119 Kassel
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