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Friday, 20 November 2015
12:00 - 13:30 Breakthrough session
Breakthrough sessions  
Onshore      Offshore    


Room: Belleville

A thorough review of abstracts cannot be done overnight – hence the main call for abstracts having closed in May. This is fine in most cases but, as delegates have told us, it is too early to be able to propose the very latest findings. Hence, we hold a call for ‘breakthrough abstracts’ presenting work that is genuinely ground-breaking and has in that form never been made public before. We introduced this at EWEA OFFSHORE 2015 and given the positive outcome, we decided to repeat this at EWEA 2015.

This call for ‘breakthrough abstracts’ took place from 1-14 September 2015. We would like to thank all the submitters forward to a highly interesting breakthrough session at EWEA 2015!

This breakthrough session covers topics from the resource to power performance, from turbines to wind farms and combines measurements and models. In a mixture of scientific and technical presentations attendees will learn about the experience and increasing acceptance of floating lidar technologies, covered by international IEA Wind experts. Turbulence remains of course a challenge for lidar measurements as well as for simplified but manageable models. A talk on turbulence intensities in large offshore wind farms will shine some light on the performance of models if compared with real measurements. The combination of turbulent fluctuations and large rotor blades leads to non-trivial blade deflections and modern control methods try to cope with this. However in order to be successful, the current deflection needs to be known and session attendees will see a new measurement concept that promises do this and which has just been tested on a large turbine this August. Finally combining this knowledge of turbulent flows with aero-elastic turbine models will be used to predict power performances in non-standard conditions.
 

Learning objectives

After attending this session, delegates will be able to:

  • estimate the current possibilities of using floating lidars in offshore wind farms.
  • quantify the performance of commonly used turbulence intensity models in real life.
  • explain how blade deflection of large blades in turbulent flows can be tackled.
  • evaluate the potential of using large wind farm data sets and modern computer power.
Lead Session Chair:
Stephan Barth, ForWind - Center for Wind Energy Research, Germany

Co-chair(s):
Tim Robinson, EWEA - The European Wind Energy Association asbl/vzw, Belgium
John Slater RWE, United Kingdom
Co-authors:
John Slater (1) F
(1) RWE, Barnard Castle, United Kingdom

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Presenter's biography

Biographies are supplied directly by presenters at EWEA 2015 and are published here unedited

John manages the RWE-UK wind resource team and also managed all offshore wind resource measurements including successful trialling of two floating lidar buoys and installation of offshore met masts. He has worked at RWE-Innogy for seven years. Previously at Renewable Energy Systems for 15 years, he was responsible for analysing wind farm production data to improve prediction methods and also successfully managed the operations of a portfolio of wind farms and setting up power performance, data analysis and wind resource programs.

He gained his Phd from Oxford in Gas turbine aerodynamics and heat transfer while working at Rolls Royce

Abstract

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