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Vestas De-icing Solution
Agenda

         ᅳ Vestas de-icing status
         ᅳ Testing of de-icing systems
         ᅳ Project plan for new de-icing solution




2
De-icing & Ice Detection

BACKGROUND
Ice on the blades creates two kinds of risks:
     - Health and safety due to ice throwing
       -      Economical risk due to production loss and business case uncertainty.




TECHNICAL EVALUATION

Ice detection:

An ice sensor solution would mitigate the HSE. However ice throws are still a serious risk as
ice detection systems only stops the turbines when a certain amount of ice has built up on the
blades.

De-icing:
Different de-icing technologies has been evaluated and some have been tested. System
performance have been evaluated, under the following factors:
AEP, Cost Price, O&M, Time-to-market & Maturity level.

  Vestas De-icing solution
Vestas de-icing status
                                  Testing of active de-icing
                                  systems

                                                                                                         Expected release
                                                                                                         for sales ultimo
                                                                                                         2012

                                                                  R&D Passive
                                                                solutions (Paint &
               LT Nacelle                                      Coating) progamme
                  V52                                                initiated
                                                                                       Testing of new de-icing
                                                                                       technology, and ice detection.

     2001                          2009                                              2011
                   2004                                            2010                           2012

                                                      Testing of ice
                                                      sensors in the
                                                         blades

Low temperature               V90 – 3.0MW LT.
      (LT)                       LT variant
  2MW Nacelle                  available on all
                               Vestas turbines                            Blade Active solution
                                                                          2 initiated
   Vestas De-icing solution
Agenda

                     ᅳ Vestas de-icing status
                     ᅳ Testing of de-icing systems
                     ᅳ Project plan for new de-icing solution




5   Vestas De-icing solution
Lab testing of de-icing technologies




    Passive De-Icing –
    Ice wind tunnel test


                                       Active de-Icing system –
                                       wind tunnel test
6   Vestas De-icing solution
Field testing of de-icing technologies
2010/2011 – 5 x V90-2MW Mk7

System/                 #1:         #2:        #3:        #4: Active   #5: Active
Turbine                 Reference   Passive    Passive    De-icing     De-icing
                        turbine     De-icing   De-icing   turbine      turbine -
                                    turbine    turbine                 Hybrid



Ice Detection           X           X          X          X            X
A

Ice Detection           X           X          X          X            X
B

Coating 1                           X

Coating 2                                      X                       X
                                                                                    The site was equipped
Heating                                                   X            X            with a comprehensive
                                                                                    measurement system
                                                                                    collecting information
                                                                                    from all
                                                                                    turbines/systems incl.
                                                                                    met. data,
                                                                                    pictures/(video) and
                                                                                    controller information.
 Vestas De-icing solution
Testing Active: Outside hot panels
 Top 5 reasons for not pursuing leading edge heating
• AEP
    ᅳ Losses during summer time to large compared to the gain during icing conditions
• O&M cost proved to be to high
• High system costs
    ᅳ Component costs and lightning protection
• Lifetime
    ᅳ It remains unproven that a reasonable lifetime can be achieved
• Damage from lightning



          In terms of performance it has to be said that the
          technology didn’t receive a full and fair trial in
          severe ice conditions




Vestas De-icing solution
Testing of ice sensors
•   No reliable or convincing evidence for accurate ice mass detection
•   Both systems are capable of detecting ice
•   Required precision to allow safe stop and start not demonstrated
•   No added value in blade mounted ice detectors as switch for de-icing system
•   Current performance demonstrates no added value as stand alone ice detection




    Granberget test winter 2010 - 2011
      Vestas De-icing solution
Solution Matrix
                            Heating     Integrated   Hot air    Coating/
                            panels on   heating      solution   paint
                            leading     panels
                            edge



           AEP              +           ++           ++         ++
           Cost Price       ÷÷          ÷÷           +          ++


           Efficiency       +           +            +          ?

           O&M/Lifetime     ÷÷          ÷÷           +          ?
           cost
           Time-To-         +           ÷            ÷          ÷÷
           Market
           Maturity level   ÷           ÷            ÷          ÷÷


 Vestas De-icing solution
Agenda

                    ᅳ Vestas de-icing status
                    ᅳ Testing of de-icing systems
                    ᅳ Project plan for new de-icing solution




11 Vestas De-icing solution
Project Plan
Proposed Development Schedule: V90-3.0 / V112-3.0 / V90-2.0 Mk9 / V100 Blade
  2011       2012          2012   2012   2012   2013   2013   2013   2013   2014   2014   2014   2014   2015   2015

  Q4         Q1            Q2     Q3     Q4     Q1     Q2     Q3     Q4     Q1     Q2     Q3     Q4     Q1     Q2



                                                                                                  V90-3.0 MW
                     Development phase                 0-series      Serial production

                                                                                            Site test in Canada
                      Lab         Installation       End Test / Report
                      test        W40-45             W12-19




                                                                                                        Portfolio
                                              Design        Design Implementation                       roll-out
                                              spec.         comp. in production




Vestas De-icing solution
Thank you for your attention



Copyright Notice
The documents are created by Vestas Wind Systems A/S and contain copyrighted material, trademarks, and other proprietary information. All rights reserved. No part of the documents may be reproduced or copied in any form or by any
means - such as graphic, electronic, or mechanical, including photocopying, taping, or information storage and retrieval systems without the prior written permission of Vestas Wind Systems A/S. The use of these documents by you, or
anyone else authorized by you, is prohibited unless specifically permitted by Vestas Wind Systems A/S. You may not alter or remove any trademark, copyright or other notice from the documents. The documents are provided “as is” and
Vestas Wind Systems A/S shall not have any responsibility or liability whatsoever for the results of use of the documents by you.

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Vestas De-Icing Solution Testing and Development

  • 2. Agenda ᅳ Vestas de-icing status ᅳ Testing of de-icing systems ᅳ Project plan for new de-icing solution 2
  • 3. De-icing & Ice Detection BACKGROUND Ice on the blades creates two kinds of risks: - Health and safety due to ice throwing - Economical risk due to production loss and business case uncertainty. TECHNICAL EVALUATION Ice detection: An ice sensor solution would mitigate the HSE. However ice throws are still a serious risk as ice detection systems only stops the turbines when a certain amount of ice has built up on the blades. De-icing: Different de-icing technologies has been evaluated and some have been tested. System performance have been evaluated, under the following factors: AEP, Cost Price, O&M, Time-to-market & Maturity level. Vestas De-icing solution
  • 4. Vestas de-icing status Testing of active de-icing systems Expected release for sales ultimo 2012 R&D Passive solutions (Paint & LT Nacelle Coating) progamme V52 initiated Testing of new de-icing technology, and ice detection. 2001 2009 2011 2004 2010 2012 Testing of ice sensors in the blades Low temperature V90 – 3.0MW LT. (LT) LT variant 2MW Nacelle available on all Vestas turbines Blade Active solution 2 initiated Vestas De-icing solution
  • 5. Agenda ᅳ Vestas de-icing status ᅳ Testing of de-icing systems ᅳ Project plan for new de-icing solution 5 Vestas De-icing solution
  • 6. Lab testing of de-icing technologies Passive De-Icing – Ice wind tunnel test Active de-Icing system – wind tunnel test 6 Vestas De-icing solution
  • 7. Field testing of de-icing technologies 2010/2011 – 5 x V90-2MW Mk7 System/ #1: #2: #3: #4: Active #5: Active Turbine Reference Passive Passive De-icing De-icing turbine De-icing De-icing turbine turbine - turbine turbine Hybrid Ice Detection X X X X X A Ice Detection X X X X X B Coating 1 X Coating 2 X X The site was equipped Heating X X with a comprehensive measurement system collecting information from all turbines/systems incl. met. data, pictures/(video) and controller information. Vestas De-icing solution
  • 8. Testing Active: Outside hot panels Top 5 reasons for not pursuing leading edge heating • AEP ᅳ Losses during summer time to large compared to the gain during icing conditions • O&M cost proved to be to high • High system costs ᅳ Component costs and lightning protection • Lifetime ᅳ It remains unproven that a reasonable lifetime can be achieved • Damage from lightning In terms of performance it has to be said that the technology didn’t receive a full and fair trial in severe ice conditions Vestas De-icing solution
  • 9. Testing of ice sensors • No reliable or convincing evidence for accurate ice mass detection • Both systems are capable of detecting ice • Required precision to allow safe stop and start not demonstrated • No added value in blade mounted ice detectors as switch for de-icing system • Current performance demonstrates no added value as stand alone ice detection Granberget test winter 2010 - 2011 Vestas De-icing solution
  • 10. Solution Matrix Heating Integrated Hot air Coating/ panels on heating solution paint leading panels edge AEP + ++ ++ ++ Cost Price ÷÷ ÷÷ + ++ Efficiency + + + ? O&M/Lifetime ÷÷ ÷÷ + ? cost Time-To- + ÷ ÷ ÷÷ Market Maturity level ÷ ÷ ÷ ÷÷ Vestas De-icing solution
  • 11. Agenda ᅳ Vestas de-icing status ᅳ Testing of de-icing systems ᅳ Project plan for new de-icing solution 11 Vestas De-icing solution
  • 12. Project Plan Proposed Development Schedule: V90-3.0 / V112-3.0 / V90-2.0 Mk9 / V100 Blade 2011 2012 2012 2012 2012 2013 2013 2013 2013 2014 2014 2014 2014 2015 2015 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 V90-3.0 MW Development phase 0-series Serial production Site test in Canada Lab Installation End Test / Report test W40-45 W12-19 Portfolio Design Design Implementation roll-out spec. comp. in production Vestas De-icing solution
  • 13. Thank you for your attention Copyright Notice The documents are created by Vestas Wind Systems A/S and contain copyrighted material, trademarks, and other proprietary information. All rights reserved. No part of the documents may be reproduced or copied in any form or by any means - such as graphic, electronic, or mechanical, including photocopying, taping, or information storage and retrieval systems without the prior written permission of Vestas Wind Systems A/S. The use of these documents by you, or anyone else authorized by you, is prohibited unless specifically permitted by Vestas Wind Systems A/S. You may not alter or remove any trademark, copyright or other notice from the documents. The documents are provided “as is” and Vestas Wind Systems A/S shall not have any responsibility or liability whatsoever for the results of use of the documents by you.