Investigation of wind turbine blade monitoring based on optical fiber Brillouin sensor

Author

Zhang, Furong ; Li, Yongqian ; Yang, Zhi ; Zhang, Liping

Author_Institution

Dept. of Electron. & Commun. Eng., North China Electr. Power Univ., Baoding, China

fYear

2009

fDate

6-7 April 2009

Firstpage

1

Lastpage

4

Abstract

The fault of wind turbine blades in practical use is analyzed in this article and the sensing theory of optical fiber Brillouin sensor is introduced. A temperature and strain online monitoring system based on Brillouin optical time domain analysis (BOTDA) is proposed as well. By applying this technique, the crack as small as 1.5 cm can be detected by BOTDA sensor, which meets the fault localization requirement of structural health monitoring of wind turbine blades. Finally, the function and application prospect of this system are represented.

Keywords

Brillouin spectra; blades; fibre optic sensors; wind turbines; Brillouin optical time domain analysis; fault localization; optical fiber Brillouin sensor; strain online monitoring system; structural health monitoring; temperature monitoring; wind turbine blade monitoring; Blades; Capacitive sensors; Fault detection; Monitoring; Optical fiber sensors; Optical fibers; Optical sensors; Temperature sensors; Time domain analysis; Wind turbines; BOTDA; Brillouin scattering; blade; optic sensing; wind turbine;

fLanguage

English

Publisher

ieee

Conference_Titel

Sustainable Power Generation and Supply, 2009. SUPERGEN '09. International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-4934-7

Type

conf

DOI

10.1109/SUPERGEN.2009.5348095

Filename

5348095