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White Papers

  • RNRG 40C Anemometer View product

  • RNRG Class 1 Anemometer View product

  • Wind Iris Lidar View product

    • Scanning LiDAR Installation and Operation Offshore: Offshore Wind Accelerator Wake Study

      Published on November 19, 2013

      As part of the Carbon Trust’s ‘Offshore Wind Accelerator’ program, a study into offshore wakes and turbulence is to be carried out using the innovative combination of four nacelle-mounted Lidars and two long range scanning Lidars.

      Download pdf (804 KB)

    • Turbine Performance Validation: The Application of Nacelle Lidar

      Published on March 10, 2014

      Poster, EWEA 2014

      In this work, the power performance and yaw misalignment of a modern full-scale, near shore turbines is assessed mimicking the offshore conditions. In addition, blockage and TI are assessed, and last but not least, a 5-beam nacelle Lidar of Avent is introduced, especially developed to test turbine control applications or advanced R&D topics.

      Download pdf (1012 KB)

    • Using Lidar To Turbocharge Power Production

      Wind farm profitability is strongly impacted by an operator’s ability to optimize a turbine fleet by assessing the performance of individual turbines. Increasingly, nacelle-mounted Lidar technology is being used for this critical purpose. Because many nacelle-mounted Lidars are highly mobile, easy to install and suitable for a variety of applications, they are earning a reputation as a general diagnostic tool for turbine performance characterization and optimization.

      Download pdf (632 KB)

    • What Makes a Nacelle-Mounted Lidar a Suitable Tool for Power Performance Measurement?

      Published on March 10, 2014

      Poster, EWEA 2014

      This poster describes the derivation of the complete uncertainty budget of a power curve measured with a two beam nacelle lidar. It focuses on the main deviations from a power curve assessed with a mast mounted cup anemometer.

      Download pdf (427 KB)

    • White Paper: Wind Iris Operational Applications

      Wind farm profitability is strongly impacted by an operator’s ability to assess the performance of individual turbines and use this information to optimize a wind turbine fleet as a whole. Increasingly, the Wind Iris nacelle-mounted Lidar is being used to perform this critical assessment. Because the Wind Iris is mobile, easy-to-install, and suitable for a variety of applications, it is earning a well deserved reputation as a unique and highly valuable diagnostic tool for turbine performance characterization and optimization.

      Download pdf (1.1 MB)

  • WindSensor P2546-OPR Anemometer View product

  • Windcube® 100S/200S/400S 3D Doppler Wind Lidar View product

  • Windcube® Lidar View product

    • A Comparison of Remote Sensing Device Performance at Rotsea

      Published on February 8, 2011

      In June 2010, RES had the opportunity to locate both a Lidar and Sodar remote sensing device at its Rotsea site. This opportunity provided a four week window where data were simultaneously available from each of the M345 - fixed mast, the M808 - Triton (SoDAR device by SecondWind) and the M809 - WINDCUBE (Lidar device by LEOSPHERE).

      Download pdf (6.5 MB)

    • Assessment of the Repeatability and Stability of Windcube Performances

      A recent study of 595 Windcube Lidar validation “couplings” compared Lidar precision and accuracy from the time of manufacture to times when the Lidar was returned to Leosphere years later for maintenance. The findings are outlined in this paper.

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    • Commercial Lidar Profilers for Wind Energy: A Comparative Guide

      The object of this paper is to illuminate the two contrasting and in many ways complimentary designs.

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    • Comparison of Lidars, German Test Station for Remote Sensing Devices

      The German Test Station for Remote Wind Sensing Devices has been initiated in order to provide the wind industry the possibility to have tested Lidars or Sodars prior to the application in the field, similar to cup anemometer calibrations.

      Download pdf (454 KB)

    • Direct Lidar Measurement in Complex Terrain

      Leosphere, EWEA 2012

      In the context of the constant aim to reduce wind farm project uncertainties, remote sensors are gaining attraction because they have the ability to measure up and even above the turbine's hub height and can easily be moved to measure at several locations of the project site.

      Download pdf (914 KB)

    • GL GH Position Statement on the WINDCUBE Remote Sensing Device

      Download pdf (144 KB)

    • Improved Bankability: The Ecofys position on Lidar use

      A key goal of a wind measurement campaign is to reduce project uncertainty, as this will improve bankability in terms of better financing terms and reduced project risks.

      Download pdf (513 KB)

    • Lidar Measurement in Extreme Winter Conditions

      Published on October 23, 2013

      This poster shows the latest advanced developments towards the improvement of Lidar performance in sites with extreme low aerosol concentration, by comparing simulated and real measurements done during a winter in Finland at a VTT test site.

      Download pdf (295 KB)

    • Lidar Simulator : A Coupled Wind and Lidar Simulator

      Published on March 10, 2014

      Lidar simulator architecture is presented, then wind profile generation, carrier to noise ratio (CNR) modelisation and reconstruction are presented then some results are given.

      Download pdf (958 KB)

    • Lidars for Offshore Applications

      Published on April 16, 2012

      Poster, EWEA 2012

      This poster focuses on the different types of Lidars available to realize such measurements during the different phases of any offshore project, from site assessment to power curve measurements.

      Download pdf (508 KB)

    • Measurement of Secondary Wind Characteristics by the WINDCUBE v2 LIDAR

      Published on March 14, 2011

      In this paper, we propose to analyse the level of agreement of these secondary wind parameters measured by the WINDCUBE Lidar in comparison with traditional anemometry.

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    • Measuring Wind Profiles in Complex Terrain Using Doppler Wind Lidar Systems with FCR™ and CFD Implementations

      Specially adapted to wind energy requirements, new independent remote sensing systems as the Doppler Wind Lidar System (WINDCUBE v2, Leosphere) are capable of measuring the 3D wind profile with high accuracy (~ 1%) and good data availability up to 240m AGL.

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    • Power Performance Measurements Using Remote Sensing

      Published on May 5, 2013

      The Committee Draft for Vote of the International Electrotechnical Commission standard 61400-12-1 Ed. 2 (CDV 12-1 Ed. 2) provides several definitions for wind speed to account for new measurement technology and larger rotor diameters.

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    • Power Performance Testing with Stand-Alone WINDCUBE® Lidar

      It is well known that the IEC ‐12‐1:2005 methodology requires the use of a hub height meteorological mast to measure the wind conditions upwind of the turbine(s) being tested. In this white paper, it is argued that ground‐based WINDCUBE Lidar technology provides a very similar input for assessing wind turbine performance in simple terrain sites, mimicking the role of an IEC met mast but with a much higher degree of flexibility and at a much lower cost.

    • Turbulence Assessment with Lidars

      Published on June 15, 2015

      This report presents the results of a study on turbulence assessment with two ground based Lidars vs a meteorological mast at the ECN Wind turbine Test site Wieringermeer (EWTW).

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    • Turbulence Intensity Measurements from a Variety of Doppler Lidar Instruments

      Published on March 10, 2014

      The objective of this paper is to investigate and analyse the current accuracy and capabilities of various remote sensing devices in measuring turbulence.

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    • WINDCUBE and FCR test in Hrgud, Bosnia and Herzegovina

      The aim of this project was to assess the accuracy of this correction by comparing the corrected Lidar measurements to the uncorrected measurements and to simultaneous measurements taken by cup anemometers on a met mast.

      Download pdf (2 MB)

    • WINDCUBE v2 and FCR Validation on Complex Site and Application for Resource Assessment Analysis

      Published on November 1, 2012

      Barlovento has had the opportunity to test for one and a half months the WINDCUBE v2 Lidar device, Power Pack version, located in complex terrain.

      Download pdf (3 MB)