Journal cover Journal topic
Wind Energy Science The interactive open-access journal of the European Academy of Wind Energy
Journal topic
Discussion papers
https://doi.org/10.5194/wes-2020-4
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wes-2020-4
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: brief communication 13 Feb 2020

Submitted as: brief communication | 13 Feb 2020

Review status
This preprint is currently under review for the journal WES.

Brief communication: Nowcasting of precipitation for leading edge erosion-safe mode

Anna-Maria Tilg1, Charlotte Bay Hasager1, Hans-Jürgen Kirtzel2, and Poul Hummelshøj3 Anna-Maria Tilg et al.
  • 1Departmentof Wind Energy, Technical University of Denmark, Roskilde, 4000, Denmark
  • 2METEK Meteorologische Messtechnik GmbH, Elmshorn, 25337, Germany
  • 3METEK Nordic ApS, Roskilde, 4000, Denmark

Abstract. Leading edge erosion (LEE) of wind turbine blades is caused by the impact of hydrometeors, which appear in solid or liquid phase. A reduction of the wind turbine blades’ tip speed during severe precipitation events can mitigate LEE. To apply such an erosion-safe mode, a precipitation nowcast is required. Theoretical considerations indicate that the time a raindrop needs to fall to the ground is sufficient to reduce the tip speed. Furthermore, it is described that a compact vertical pointing radar that measures rain in different heights with a sufficient high spatio-temporal resolution can nowcast rain for an erosion-safe mode.

Anna-Maria Tilg et al.

Interactive discussion

Status: open (until 26 Mar 2020)
Status: open (until 26 Mar 2020)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
[Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement

Anna-Maria Tilg et al.

Anna-Maria Tilg et al.

Viewed

Total article views: 44 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
35 7 2 44 1 1
  • HTML: 35
  • PDF: 7
  • XML: 2
  • Total: 44
  • BibTeX: 1
  • EndNote: 1
Views and downloads (calculated since 13 Feb 2020)
Cumulative views and downloads (calculated since 13 Feb 2020)

Viewed (geographical distribution)

Total article views: 41 (including HTML, PDF, and XML) Thereof 41 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Saved

No saved metrics found.

Discussed

No discussed metrics found.
Latest update: 16 Feb 2020
Publications Copernicus
Download
Short summary
In recent times there is an increased awareness of leading edge erosion of wind turbine blades. An option to mitigate the erosion at the leading edges is the deceleration of the wind turbine blades during severe precipitation events. This work shows that a vertical pointing radar can be used to nowcast such severe precipitation events. Nowcasting allows a reduction of the rotational speed prior to the impact of precipitation on the blades.
In recent times there is an increased awareness of leading edge erosion of wind turbine blades....
Citation