09:00 - 10:30 Cold climate issues in resource assessment
Resource assessment
Room: Hall G2
Sites subject to cold climate not only have temperatures outside the normal limits of standard wind turbines but also atmospheric icing conditions which are frequent and may account for a significant loss in annual production. This session addresses the most recent advancements in the field of atmospheric icing effects on wind resource yield assessment. Assessing, measuring and estimating icing losses in the resource assessment phase of a project is of crucial importance for the successful business case of a wind farm in cold climates. Icing of the rotor blades can significantly reduce the energy yield of a wind farm up to 10% or more of the annual production and it also influences wind measurements by reducing availability.
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Learning objectives
- Learn state-of-the-art measurement techniques and data analysis approaches for cold climate sites and therefore decrease the uncertainty in yield assessments;
- Discover the latest findings from over 20 sites and 100 met mast years of data in cold climates from Scandinavia and Germany;
- Learn to execute more reliable pre-construction energy yield assessments in cold climate sites.
Presenter
Co-authors:
Timo Karlsson (1) F Martin Gronsleth (2) Zouhair Khadiri-Yazami (3)
(1) VTT Technical Research Centre of Finland, VTT, Finland (2) Kjeller Vindteknikk, Oslo, Norway (3) Fraunhofer IWES, Kassel, Germany
Presenter's biography
Biographies are supplied directly by presenters at WindEurope Summit 2016 and are published here uneditedMr. Lehtomäki has been part of VTT Technical Research Centre of Finland Ltd in Wind Power team since 2009. He has a Master’s degree on mechanical engineering on product development from Helsinki University of Technology. Currently as Senior Scientist, his everyday work focuses on coordinating and developing new projects and technology innovations mainly in the field of cold climate wind power. He specializes in icing effects on blades, iced wind turbine dynamics, ice detection and pre-construction icing loss assessments. He is the Operating Agent of International Energy Agency (IEA) Wind Task 19 “Wind Energy In Cold Climates”. He is the coordinator of cold climate sub-committee in the revision of IEC 61400-1 ed3->ed4 “Design requirements for wind turbines” standard. He is also working with IEC 61400-15 ed1 “Energy yield assessment” standard regarding cold climate effects.
He is on a mission to unlock the potentials of cold climate to the wind industry.
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