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Image analysis of icing on wind turbine blades Jenny Ericson, Patrik Jonsson, Mikael Töyrä, Combitech

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Image analysis of icing on wind turbine blades Jenny Ericson, Patrik Jonsson, Mikael Töyrä, Combitech

  1. 1. Ice  detec'on  using   image  analysis  
  2. 2. U'lize  latest  research  in  image  analysis   Image  analysis  used  together  with:   •  meteorological  data     •  Mul7Variate  Data  Analysis     •  Neural  Networks  or  Support   Vector  Machines       2
  3. 3. U'lize  latest  research  in  image  analysis   State  of  the  art  embedded  computer  system  ODIN  has  the  capability   to  perform  real  7me  image  analysis  in  the  field       3
  4. 4. Ice  detec'on  on  rotor  blades  necessary   •  Op7mize  produc7on   •  Ac7vate  de-­‐icing  system   •  Warning  system  for  service  personnel         4
  5. 5. Technical  solu'on   •  Images  of  rotor  blades     •  Meterological  data       Mulitvariate  data  analysis  model       Classifica7on  of  icing  condi7on   5
  6. 6. Technical  solu'on   10 Dry •  Based  on  Combitech  research  on  icing   Ice 8 Snow condi7on  at  roads   Track 6 Wet •  A  licen7ate  thesis  is  presented  of  this   4 work1   Component 2 2 0 -2 -4 -6 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 Component 1 [1] P. Jonsson, “Intelligent Networked Sensors for Increased Traffic Safety,” Licentiate Thesis, Department of Information Technology and Media, Mid Sweden University, Östersund, 2011. 6
  7. 7. Advantages  of  image  analysis   •  Detec7on  of  very  small  amounts  of  ice   •  Possibility  to  detect  ice  on  non-­‐rota7ng  wind  turbines               7
  8. 8. Advantages  of  image  analysis   •  Measuring  directly  on  the  rotor   blade   •  In  opera7on  even  when  the  wind   turbine  isn´t  opera7ng   •  Useful  for  general  surveillance  of   the  site     Cameras and IR search light 8
  9. 9. Cooperate  with  Combitech   •  Long  7me  experience:   §  measurement  systems     §  harsh  climate   §  camera  systems  (color  and  NIR  with  search  lights)   §  advanced  image  analysis  using  Neural  Networks  started  2002   §  Analyzing  methods  have  been  further  exploited:     §  Neural  Networks  (NN)   §  Support  Vector  Machines  (SVM)   §  Mul7Variate  Data  Analysis  (MVDA)   9
  10. 10. Installed  measurement  systems  in  icing  condi'ons   INSTALLATIONS   Customer   Installa'on  site   Date   5  pcs  complete   Wind  turbine   Sweden   Autumn   systems  *   supplier   2010     8  pcs  complete     O2   Na7onwide  Sweden   2009-­‐2010   systems  *   Vindkompaniet   (Bliekevare,  Sveg,     Glötesvålen,  Tåsjö)   1  pcs  complete   O2   Aapua,  Sweden   2008   system     Vindkompaniet   4  pcs  complete   Elforsk   Sveg,  Sweden   2008   systems   6  pcs  IceMonitor   Cost727  project   Germany,  Finland,   2007   Sweden,  Switzerland,   Poland  and  Japan   14  pcs  IceMonitor   Varying  customers   2006-­‐2010   *These systems are installed on top of wind turbines and tall masts. These systems collects data from integrated meteorological sensors (wind speed/direction, humidity, air temp/pressure, ice load, ice detection, visibility, cloud height). They are also equipped web cameras with motion detection for taking pictures of the blades. 10
  11. 11. Feel  free  to  contact  us  for  further   informa'on   Jenny  Ericson   business  coordinator   jenny.ericson@combitech.se   +46  703  717  003     Mikael  Töyrä   Technical  details  measurement  systems   mikael.toyra@combitech.se   +46  734  460  353     Patrik  Jonsson   tekn  lic   Technical  details  image  analysis   patrik.jonsson@combitech.se   +46  734  460  318   11

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