Two-beam lidar measurements in a non-homogeneous wind field

Alexander Cassola, Matthew Stickland, Andrew Oldroyd

Research output: Contribution to conferencePoster

Abstract

Nacelle based wind lidars are designed to sit atop a wind turbine structure and make measurements at given distances from it. Most times the lidar faces the turbine’s upstream direction to sense oncoming wind. Two lidars were set up looking upstream on two adjacent offshore turbines in Denmark. The case considered was for when the turbines were oriented such that one lidar was looking into the free stream while the other lidar had one beam in the first turbine’s wake and the other beam in near free stream conditions. This enabled the possibility to look at horizontal wind speeds reconstructed inside homogeneous and non-homogeneous wind fields. Data for the two lidars were processed and averaged over different intervals. Correlations of radial and horizontal wind speeds in different wind fields were performed. Results in this case show horizontal wind speeds reconstructed in non-homogeneous field similar to those reconstructed in a (assumed) homogeneous one.
LanguageEnglish
Number of pages1
Publication statusPublished - 10 Mar 2015
EventEWEA Offshore 2015 - Copenhagen, Denmark
Duration: 10 Mar 201512 Mar 2015

Conference

ConferenceEWEA Offshore 2015
CountryDenmark
CityCopenhagen
Period10/03/1512/03/15

Fingerprint

Lidar
Optical radar
Turbine
Wind Speed
Horizontal
Turbines
Wind Turbine
Wake
Adjacent
Interval
Wind turbines

Keywords

  • LiDAR
  • measurements
  • wind field models

Cite this

Cassola, A., Stickland, M., & Oldroyd, A. (2015). Two-beam lidar measurements in a non-homogeneous wind field. Poster session presented at EWEA Offshore 2015, Copenhagen, Denmark.
Cassola, Alexander ; Stickland, Matthew ; Oldroyd, Andrew. / Two-beam lidar measurements in a non-homogeneous wind field. Poster session presented at EWEA Offshore 2015, Copenhagen, Denmark.1 p.
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Cassola, A, Stickland, M & Oldroyd, A 2015, 'Two-beam lidar measurements in a non-homogeneous wind field' EWEA Offshore 2015, Copenhagen, Denmark, 10/03/15 - 12/03/15, .

Two-beam lidar measurements in a non-homogeneous wind field. / Cassola, Alexander; Stickland, Matthew; Oldroyd, Andrew.

2015. Poster session presented at EWEA Offshore 2015, Copenhagen, Denmark.

Research output: Contribution to conferencePoster

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T1 - Two-beam lidar measurements in a non-homogeneous wind field

AU - Cassola, Alexander

AU - Stickland, Matthew

AU - Oldroyd, Andrew

PY - 2015/3/10

Y1 - 2015/3/10

N2 - Nacelle based wind lidars are designed to sit atop a wind turbine structure and make measurements at given distances from it. Most times the lidar faces the turbine’s upstream direction to sense oncoming wind. Two lidars were set up looking upstream on two adjacent offshore turbines in Denmark. The case considered was for when the turbines were oriented such that one lidar was looking into the free stream while the other lidar had one beam in the first turbine’s wake and the other beam in near free stream conditions. This enabled the possibility to look at horizontal wind speeds reconstructed inside homogeneous and non-homogeneous wind fields. Data for the two lidars were processed and averaged over different intervals. Correlations of radial and horizontal wind speeds in different wind fields were performed. Results in this case show horizontal wind speeds reconstructed in non-homogeneous field similar to those reconstructed in a (assumed) homogeneous one.

AB - Nacelle based wind lidars are designed to sit atop a wind turbine structure and make measurements at given distances from it. Most times the lidar faces the turbine’s upstream direction to sense oncoming wind. Two lidars were set up looking upstream on two adjacent offshore turbines in Denmark. The case considered was for when the turbines were oriented such that one lidar was looking into the free stream while the other lidar had one beam in the first turbine’s wake and the other beam in near free stream conditions. This enabled the possibility to look at horizontal wind speeds reconstructed inside homogeneous and non-homogeneous wind fields. Data for the two lidars were processed and averaged over different intervals. Correlations of radial and horizontal wind speeds in different wind fields were performed. Results in this case show horizontal wind speeds reconstructed in non-homogeneous field similar to those reconstructed in a (assumed) homogeneous one.

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KW - measurements

KW - wind field models

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Cassola A, Stickland M, Oldroyd A. Two-beam lidar measurements in a non-homogeneous wind field. 2015. Poster session presented at EWEA Offshore 2015, Copenhagen, Denmark.