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Martin Elliott Senior Engineer [email protected]
Reducing costs of offshore wind - Opportunities for condition monitoring
3 © BVG Associates 2013
Building an Industry
Wave & Tidal Energy in the UK Pathways to Cost Reduction in Offshore Wind: Technology
Client: RenewableUK & The Crown Estate Date: June 2013
Client: RenewableUK Date: March 2013
Client: The Crown Estate Date: June 2012
State of the Industry Report: Onshore and offshore wind
UK Content Analysis of Robin Rigg offshore wind farm & O&M services Offshore Wind: Forecast of Future
Costs and Benefits Client: RenewableUK Date: October 2011
Client: E.ON Date: September 2011 & November 2012
Client: RenewableUK Date: June 2011
Offshore Wind: Opportunities for the Composites Industry
Wave & Tidal Energy in the Pentland Firth & Orkney Waters
A Guide to an Offshore Wind Farm
Client: The Crown Estate Date: June 2011
Client: The Crown Estate Date: May 2011
Client: The Crown Estate Date: January 2010
BVG Associates
Market analysis & business development • Supply chain development • Economic impact assessment • Support to industrialisation
Technical innovation & engineering analysis • Support to investment in technology • R&D programme management • Design and engineering services
Project implementation • FIT project development (UK only) • SCADA & condition monitoring • O&M technical support
Technical education
4 © BVG Associates 2013
Condition Monitoring – Roadmap for next 15 mins
7 © BVG Associates 2013
• Wind industry – Growing up • What IS condition monitoring? • What it’s good and not good at • Pathways to LCOE reduction • Another way • The ideal • A few examples of innovation • What can YOU bring to the table?
The wind industry is growing up
• 1984 – Onshore – 250kW / 25m dia • Simple controls & monitoring via SCADA • Handful of sensors • “Agricultural” engineering
• 2004 – First “near” offshore UK wind farm – 2,000kW / 80m dia
• Scroby Sands – Vestas V80 “Onshore” turbine • Early drive train “Condition Monitoring System” (CMS)
• 2013 – Alstom / Areva / Samsung / Siemens / Vestas - 6,000kW / 155m dia
• Designed for offshore • 1000+ sensors • CMS on drive train, rotor, structure(?)
• 2023 - Far offshore – 10,000kW / 200m dia
• Designed for reliability • Integrated control, condition monitoring and asset management tools • Comprehensive remote diagnostics and prognostics
9 © BVG Associates 2013
What is Condition Monitoring? - Purpose
Using … • Status monitoring = For routine reporting and operational safety • Fault detection = finding problem (after failure = needs repair) • Diagnostic = finding cause of problem • Prognostic = predicting future failure To … • Enable service crew to address problem:
• Before failure (ie. minimising maintenance cost & lost revenue)
• At planned time (eg low wind) • On their first visit
• Understand root cause of problem (may feed back to design) • Minimise workload of engineer input looking at data from multiple sites
10 © BVG Associates 2013
What is Condition Monitoring? - Data
• Wind turbine controller • Between 1 and 50 samples / sec [Hz] • In excess of 1000 ‘sensors’
• SCADA
• Events and 10 minute average data • Some moves to “on change” data logging
• “Condition Monitoring System” (CMS)
• 50,000 samples / sec [Hz] • Frequency analysis • Drive train, and increasingly rotor
• Structural Health Monitoring (SHM)
• Around 5 samples per second • Strain; Scour; Corrosion;
11 © BVG Associates 2013
Condition monitoring: recent trends
1. Market for condition monitoring systems has not grown as fast as anticipated 5 years ago
2. All offshore wind turbine manufacturers include some level of CMS. Most are independent ‘add on’ systems – Some now integrated
3. WTMs and others bringing experience from other sectors
4. Technical trend towards: • Use of more types of sensor • Monitoring more components • Looking wider across systems • Analysing data from many turbines, centrally • Use of more wind turbine design understanding and modelling
12 © BVG Associates 2013
Condition monitoring: What is measured
13 © BVG Associates 2013
Company System Tempera
ture
Humidity
Pressu
re
Acousti
c emiss
ion
Cleanlin
ess (
oil)
Electri
cal
StrainAcc
elero
meter
Displac
emen
t
Tacho
meter
VideoRoto
rDriv
etrain
Tower
Areva/01db-Metravib Drivetrain OneProD ü ü ü ü üBently Nevada (GE) WT-CMS Adapt.wind ü ü ü üBeran Instruments PlantProtech ü ü ü ü üBrüel & Kjær Vibro WTAS - Type 3651 ü ü ü ü ü ü ü üEickhoff E-GOMS ü ü ü üEmerson Process Management epro MMS ü ü üFAG FAG WiPro ü ü ü ü ü ü üGamesa SMP-8C ü ü üGlobal Maintenance Technologies E-Sentry System ü ü ü ü üGram & Juhl TCM® ü ü ü ü ü üHolroyd Instruments AE Systems ü ü üIGUS ITS BLADEcontrol® ü üInsensys RMS ü ü üPrüfteknik Condition Monitoring VibroWeb XP ü ü ü ü üRovsing Dynamics Winergy CDS ü ü ü üSiemens Wind Power AS FLENDER CM ü ü ü ü üSKF WindCon ü ü ü üVatron DriveMon Wind ü ü üWindSL WT-HUMS ü ü ü ü ü ü üµ-SEN Ω-Guard® ü ü ü(excludes single-sensor type systems based on acceleraometers AE, US, oil cleanliness sensing; also analytics only suppliers)
Condition monitoring: what is a CMS good & not good at
ü Bearing damage • Detect and prognose • Gearbox (especially HS stage), main bearing, generator bearings
ü Gear tooth damage • Detect and prognose
ü Abnormal operation • Gross yaw and pitch system defects
û Adding up fatigue life from day 1 & predicting date of failure
(and are unlikely ever to do so)
û Diagnosing root cause (not yet!)
14 © BVG Associates 2011
LCOE – Pathways to £100/MWh [#12]
15 © BVG Associates 2013
[#12] “Offshore wind cost reduction pathways: Technology work stream”, BVG Associates, June 2012 – Available from www.bvgassociates.co.uk
2013: LCOE = 140/MWh CF = 40%
FID 2020: LCOE = 100/MWh CF = 51%
LCOE – Pathways to £100/MWh – Downtime and OPEX
17 © BVG Associates 2013
2011: Downtime contribution 2011: Share of £74k/MW/yr OPEX
Pathways: One developer’s roadmap [#1]
18 © BVG Associates 2013
[#1] Interview with Benj Sykes of Dong Energy Wind Power – Wind&WaveCONNECT September 2013
High reliability and efficiency
Remote condition monitoring and
diagnostics
£87/MWh
Condition Monitoring: another way
• Think differently: combine with condition-based maintenance = focus on the components that need it
• Challenge: • Needs more understanding of the technology • = input from designers of WTM, structure and other BOP components
19 © BVG Associates 2013
Failure-based maintenance
Time-based maintenance
Condition-based maintenance
Mai
nten
ance
Stra
tegi
es
Condition Monitoring
Condition monitoring: the ideal Turbine control
system Multiple systems
Rotor
Multiple turbines
20 © BVG Associates 2013
Multiple components
Turbine Design
Knowledge
1
3
2
4
Condition Monitoring - Examples
• Vessel Motion Monitoring § James Fisher / Strainstall § Widens operational window § Mitigate against nausea § Protect equipment and
personnel
• Scour monitoring § James Fisher / Strainstall § Continuous monitoring § Reduces diver / ROV
requirement
21 © BVG Associates 2013
www.strainstall.co.uk www.strainstall.co.uk
Condition Monitoring - Examples
• Array cable monitoring § HVPD Ltd / IPEC Ltd § Technology transfer from
onshore power distribution § Early warning of array cable /
joint / termination failure
• CCTV // VOIP // Security § Siemens Building Technology § Installed on Greater Gabbard § Potential technician head-cams
to aid diagnostics and recording
22 © BVG Associates 2013
www.hvpd.co.uk / www.ipeceng.com/ / www.siemens.co.uk/securitysolutions
Condition Monitoring - Examples
• Holistic monitoring & prognostics § Romax Technology § Grown from automotive
drivetrain design history § Monitoring / fault finding
service and software tools § Equivalent Operating Hours
• Holistic monitoring & prognostics § Critical Group § Knowledge transfer from
aerospace and other energy sectors
§ Integrate CMS / Command and Control and Asset Management
23 © BVG Associates 2013
www.romaxtech.com/ www.critical-software.co.uk/
Condition Monitoring – Many more examples
24 © BVG Associates 2013
• Autonomous Unmanned Aerial Vehicles (UAV) for blade inspection
• Oil analysis – Lab on turbine
• RFID tagging for component inventory control
• Equipment configuration control and e-documentation
• Power semiconductors – Monitoring at device level
• Decision support tools
• Personnel tagging / tracking
• Autonomous robotic wind turbines service technicians!
Offshore Wind – Some other funding sources
• GROW Offshore • Government-sponsored,
industry-led programme that is intended to stimulate the supply chain in the UK
• Up to 10%-30% of £500k • Match fund consultancy
support up to 50% • Strong focus on jobs created • Programme just starting so
“now” is a good time.
• Offshore Renewable Energy Catapult
Looking for projects that are § Innovative § Technically grounded § Supporting SMEs § ‘Game changing’ § Bringing value/jobs to UK
25 © BVG Associates 2013
Condition Monitoring – What can YOU bring to the party?
26 © BVG Associates 2013
• Lots of opportunity for the right products and services BUT … • European / Worldwide marketplace (not just UK) • Need clear benefit to reduce LCOE (Increase AEP / Reduce OPEX) • DECC website – Simple LCOE tool
• Other funding available
• DECC • Offshore Renewable Energy Catapult • GROW Offshore • TSB
• Help available
• BVG Associates … or there are other consultancies!
• Questions? • Or let’s talk over coffee or lunch
Condition monitoring: typical business case
• Pay €X + €Y/year • Avoid lost revenue of €Z • Avoid large component replacement cost of €A
• eg set of bearings instead of complete gearbox • 1 service van instead of 4 vans and a crane etc.
• CMS supplier examples always look great • Detect the problem • Generic reliability data often ‘old’
and generic
• Customers are enjoying benefits • Payback average 2-8 years
(looks best for larger turbines & offshore)
• See also DECC website for simple LCOE model
28 © BVG Associates 2013