winterwind 2008 publishedwinterwind.se/2008/presentationer/15_gawrisch_winterwind...3 winterwind...

Challenge Cold Climate

Winterwind 2008

December 10th, Norrköping, Sweden

Authors:

Rüdiger Gawrisch, Martin von Mutius

Repower Systems AG

2Winterwind 2008, December 10th, Norrköping, Sweden © 2008 Repower Systems AG

Agenda

Definition of Cold Climate

Market potential in Cold Climates

MM82 CCV – 2MW Turbine

New challenges in Canada

Experiences in China

Conclusion



GL Wind-Technical Note 067:

If minimum temperatures of below -20°C have been obser vedduring long term measurements on an average of more thannine days a year, the site is defined as a cold climate site.

Standard Conditions of Use for REpower MM CCV:

Ambient temperature range for operation: -30°C to + 35°C

Ambient temperature range for structure: -40°C to +50°C


Cold Climate Areas

Mean minimum temperature in °C in January (1961-1990)


Agenda






Conclusion



China:

Target by 2020: 30,000 MW in total, 70% in cold climates.

Project plans from Honiton Energy* Group: approx. 5,000 MW in Inner Mongolia*Honiton Energy is Partner of REpower in JV REpower North (China)

Canada:

Target by 2020: >10,000 MW in total, 90 % in cold climates

Quebec Tender in total 2,000 MW

Contract of 954 MW for REpower turbines, 100% CCV


Hydro Quebec Tender


Agenda






Conclusion


MM82 CCV - 2 MW Turbine

CCV adaptions :

� Low temperature steel

� Oil and grease

� Reinforced heaters

� Addtional heaters

� Start up procedure

Special requirements for site in Inner Mongolia:

� Dust filter for tower ventilation

� Increased ventilation system due to low air density


MM82 CCV - 2 MW Turbine

Verification of Design and Certification :

� on the basis of GL Wind ‚Technical Note 067‘

� Steel structures according to REpower internal guidelinesbased on expert‘s knowledge with the underlyingguideline DAST Richtlinie 009

� Details of load and component certification have beenagreed between REpower and certification body

� Approval for Design assessment S-Class CCV isongoing and planned to be finished in 2009


Agenda






Conclusion


Experience in Inner Mongolia / China

Waiting for erection



Preperation of erection



Teamwork



Work interrupted



Erection starts



Erection continues



Erection nearly finished



Waiting for grid



Turbine running



First experiences from 2 MW turbine operation in China:

� heaters performed very satisfactory

� no icing conditiones occurred up to now

� ventilation system with special filters works reliable

� full CCV test period will be in this winter


Agenda






Conclusion


New Challenge Canada

A metmast in Quebec, Canada


Agenda






Conclusion


Conclusion

� Executed concept for low temperatures

� Validation in winter 2008/2009

� Further development is required for sites withicing conditiones

� Components in focus:

Blades and measurement instrumentation


Thank you for your attention!

© 2008 Repower Systems AG

All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photography, recording, or any information storage and retrieval system, without permission from Repower Systems AG.

winterwind 2008 publishedwinterwind.se/2008/presentationer/15_gawrisch_winterwind...3 winterwind...

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