New method of direct-drive wind turbine reliability growth assessment

Author

Sun Yongguo ; Sun Yongquan ; Ding Xibo ; Yang Bin ; Zhao Haiqiu

Author_Institution

Mech. & Power Eng. Coll., Harbin Univ. of Sci. & Technol., Harbin, China

fYear

2010

fDate

4-7 Aug. 2010

Firstpage

908

Lastpage

912

Abstract

In order to assess the direct-drive wind turbine reliability during the trial operation stage, a new method for reliability growth estimation is proposed based on life data conversion method and conditional expectation technology. Wind turbine failures are tracked in the trial operation stage, converted into interval life data, and then changed to be the complete life data using conditional expectation technology, finally, wind turbine life distribution is inferred, the distribution parameters and the point and interval estimation of wind turbine reliability metrics are given. A numerical example shows the effectiveness of this method.

Keywords

drives; power system reliability; wind power; wind turbines; data conversion; direct-drive wind turbine reliability; expectation technology; interval estimation; reliability growth estimation; trial operation stage; wind turbine failures; Estimation; Exponential distribution; Gaussian distribution; Reliability; Sun; Weibull distribution; Wind turbines;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechatronics and Automation (ICMA), 2010 International Conference on

Conference_Location

Xi´an

ISSN

2152-7431

Print_ISBN

978-1-4244-5140-1

Electronic_ISBN

2152-7431

Type

conf

DOI

10.1109/ICMA.2010.5589957

Filename

5589957