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Cost-effective condition monitoring for wind turbines.

Yang, W. and Tavner, P. J. and Crabtree, C. J. and Wilkinson, M. (2010) 'Cost-effective condition monitoring for wind turbines.', IEEE transactions on industrial electronics., 57 (1). pp. 263-271.

Abstract

Cost-effective wind turbine (WT) condition monitoring assumes more importance as turbine sizes increase and they are placed in more remote locations, for example, offshore. Conventional condition monitoring techniques, such as vibration, lubrication oil, and generator current signal analysis, require the deployment of a variety of sensors and computationally intensive analysis techniques. This paper describes a WT condition monitoring technique that uses the generator output power and rotational speed to derive a fault detection signal. The detection algorithm uses a continuous-wavelet-transform-based adaptive filter to track the energy in the prescribed time-varying fault-related frequency bands in the power signal. The central frequency of the filter is controlled by the generator speed, and the filter bandwidth is adapted to the speed fluctuation. Using this technique, fault features can be extracted, with low calculation times, from direct- or indirect-drive fixed- or variable-speed WTs. The proposed technique has been validated experimentally on a WT drive train test rig. A synchronous or induction generator was successively installed on the test rig, and both mechanical and electrical fault like perturbations were successfully detected when applied to the test rig.

Item Type:Article
Keywords:Adaptive signal processing, Condition monitoring, Fault diagnosis, Induction generators, Signal processing, Synchronous generators, Time-frequency analysis, Wavelet transforms, Wind power generation.
Full text:PDF - Published Version (1052Kb)
Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1109/TIE.2009.2032202
Publisher statement:©2010 IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Record Created:06 Apr 2010 15:35
Last Modified:14 Dec 2011 10:02

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