Rotor equivalent wind speed for power curve measurement – comparative exercise for IEA Wind Annex 32

Rozenn Wagner; B. Cañadillas; A. Clifton; S. Feeney; N. Nygaard; M. Poodt; C. St Martin; E. Tüxen; J. W. Wagenaar

doi:10.1088/1742-6596/524/1/012108

Rotor equivalent wind speed for power curve measurement – comparative exercise for IEA Wind Annex 32

Rozenn Wagner, B. Cañadillas, A. Clifton, S. Feeney, N. Nygaard, M. Poodt, C. St Martin, E. Tüxen, J. W. Wagenaar

Research output: Contribution to journal › Conference article › Research › peer-review

3167 Downloads (Orbit)

Abstract

A comparative exercise has been organised within the International Energy Agency (IEA) Wind Annex 32 in order to test the Rotor Equivalent Wind Speed (REWS) method under various conditions of wind shear and measurement techniques. Eight organisations from five countries participated in the exercise. Each member of the group has derived both the power curve based on the wind speed at hub height and the power curve based on the REWS. This yielded results for different wind turbines, located in diverse types of terrain and where the wind speed profile was measured with different instruments (mast or various lidars). The participants carried out two preliminary steps in order to reach consensus on how to implement the REWS method. First, they all derived the REWS for one 10 minute wind speed profile. Secondly, they all derived the power curves for one dataset. The main point requiring consensus was the definition of the segment area used as weighting for the wind speeds measured at the various heights in the calculation of the REWS. This comparative exercise showed that the REWS method results in a significant difference compared to the standard method using the wind speed at hub height in conditions with large shear and low turbulence intensity.

Original language	English
Article number	012108
Book series	Journal of Physics: Conference Series (Online)
Volume	524
Issue number	1
Number of pages	10
ISSN	1742-6596
DOIs	https://doi.org/10.1088/1742-6596/524/1/012108
Publication status	Published - 2014
Event	5th International Conference on The Science of Making Torque from Wind 2014 - Technical University of Denmark, Copenhagen, Denmark Duration: 10 Jun 2014 → 20 Jun 2014 Conference number: 5 http://indico.conferences.dtu.dk/conferenceDisplay.py?confId=138

Conference

Conference	5th International Conference on The Science of Making Torque from Wind 2014
Number	5
Location	Technical University of Denmark
Country/Territory	Denmark
City	Copenhagen
Period	10/06/2014 → 20/06/2014
Internet address	http://indico.conferences.dtu.dk/conferenceDisplay.py?confId=138

Bibliographical note

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by IOP Publishing Ltd

Access to Document

10.1088/1742-6596/524/1/012108

Rotor equivalent wind speedFinal published version, 873 KB

OpenUrl availability

Full text

Cite this

@inproceedings{53cfd074b699450684a033d92f232433,

title = "Rotor equivalent wind speed for power curve measurement – comparative exercise for IEA Wind Annex 32",

abstract = "A comparative exercise has been organised within the International Energy Agency (IEA) Wind Annex 32 in order to test the Rotor Equivalent Wind Speed (REWS) method under various conditions of wind shear and measurement techniques. Eight organisations from five countries participated in the exercise. Each member of the group has derived both the power curve based on the wind speed at hub height and the power curve based on the REWS. This yielded results for different wind turbines, located in diverse types of terrain and where the wind speed profile was measured with different instruments (mast or various lidars). The participants carried out two preliminary steps in order to reach consensus on how to implement the REWS method. First, they all derived the REWS for one 10 minute wind speed profile. Secondly, they all derived the power curves for one dataset. The main point requiring consensus was the definition of the segment area used as weighting for the wind speeds measured at the various heights in the calculation of the REWS. This comparative exercise showed that the REWS method results in a significant difference compared to the standard method using the wind speed at hub height in conditions with large shear and low turbulence intensity.",

author = "Rozenn Wagner and B. Ca{\~n}adillas and A. Clifton and S. Feeney and N. Nygaard and M. Poodt and Martin, \{C. St\} and E. T{\"u}xen and Wagenaar, \{J. W.\}",

note = "Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by IOP Publishing Ltd; 5th International Conference on The Science of Making Torque from Wind 2014, TORQUE 2014 ; Conference date: 10-06-2014 Through 20-06-2014",

year = "2014",

doi = "10.1088/1742-6596/524/1/012108",

language = "English",

volume = "524",

journal = "Journal of Physics: Conference Series (Online)",

issn = "1742-6596",

publisher = "IOP Publishing",

number = "1",

url = "http://indico.conferences.dtu.dk/conferenceDisplay.py?confId=138",

}

TY - GEN

T1 - Rotor equivalent wind speed for power curve measurement – comparative exercise for IEA Wind Annex 32

AU - Wagner, Rozenn

AU - Cañadillas, B.

AU - Clifton, A.

AU - Feeney, S.

AU - Nygaard, N.

AU - Poodt, M.

AU - Martin, C. St

AU - Tüxen, E.

AU - Wagenaar, J. W.

N1 - Conference code: 5

PY - 2014

Y1 - 2014

N2 - A comparative exercise has been organised within the International Energy Agency (IEA) Wind Annex 32 in order to test the Rotor Equivalent Wind Speed (REWS) method under various conditions of wind shear and measurement techniques. Eight organisations from five countries participated in the exercise. Each member of the group has derived both the power curve based on the wind speed at hub height and the power curve based on the REWS. This yielded results for different wind turbines, located in diverse types of terrain and where the wind speed profile was measured with different instruments (mast or various lidars). The participants carried out two preliminary steps in order to reach consensus on how to implement the REWS method. First, they all derived the REWS for one 10 minute wind speed profile. Secondly, they all derived the power curves for one dataset. The main point requiring consensus was the definition of the segment area used as weighting for the wind speeds measured at the various heights in the calculation of the REWS. This comparative exercise showed that the REWS method results in a significant difference compared to the standard method using the wind speed at hub height in conditions with large shear and low turbulence intensity.

AB - A comparative exercise has been organised within the International Energy Agency (IEA) Wind Annex 32 in order to test the Rotor Equivalent Wind Speed (REWS) method under various conditions of wind shear and measurement techniques. Eight organisations from five countries participated in the exercise. Each member of the group has derived both the power curve based on the wind speed at hub height and the power curve based on the REWS. This yielded results for different wind turbines, located in diverse types of terrain and where the wind speed profile was measured with different instruments (mast or various lidars). The participants carried out two preliminary steps in order to reach consensus on how to implement the REWS method. First, they all derived the REWS for one 10 minute wind speed profile. Secondly, they all derived the power curves for one dataset. The main point requiring consensus was the definition of the segment area used as weighting for the wind speeds measured at the various heights in the calculation of the REWS. This comparative exercise showed that the REWS method results in a significant difference compared to the standard method using the wind speed at hub height in conditions with large shear and low turbulence intensity.

U2 - 10.1088/1742-6596/524/1/012108

DO - 10.1088/1742-6596/524/1/012108

M3 - Conference article

SN - 1742-6596

VL - 524

JO - Journal of Physics: Conference Series (Online)

JF - Journal of Physics: Conference Series (Online)

IS - 1

M1 - 012108

T2 - 5th International Conference on The Science of Making Torque from Wind 2014

Y2 - 10 June 2014 through 20 June 2014

ER -

Rotor equivalent wind speed for power curve measurement – comparative exercise for IEA Wind Annex 32

Abstract

Conference

Bibliographical note

Access to Document

OpenUrl availability

Fingerprint

Cite this