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Automated on-line fault prognosis for wind turbine pitch systems using supervisory control and data acquisition.

Chen, B. and Matthews, P.C. and Tavner, P.J. (2015) 'Automated on-line fault prognosis for wind turbine pitch systems using supervisory control and data acquisition.', IET renewable power generation., 9 (5). pp. 503-513.


Current wind turbine (WT) studies focus on improving their reliability and reducing the cost of energy, particularly when WTs are operated offshore. A supervisory control and data acquisition (SCADA) system is a standard installation on larger WTs, monitoring all major WT sub-assemblies and providing important information. Ideally, a WT's health condition or state of the components can be deduced through rigorous analysis of SCADA data. Several programmes have been made for that purposes; however, the resulting cost savings are limited because of the data complexity and relatively low number of failures that can be easily detected in early stages. This study proposes a new method for analysing WT SCADA data by using an a priori knowledge-based adaptive neuro-fuzzy inference system with the aim to achieve automated detection of significant pitch faults. The proposed approach has been applied to the pitch data of two different designs of 26 variable pitch, variable speed and 22 variable pitch, fixed speed WTs, with two different types of SCADA system, demonstrating the adaptability of the approach for application to a variety of techniques. Results are evaluated using confusion matrix analysis and a comparison study of the two tests is addressed to draw conclusions.

Item Type:Article
Keywords:Power engineering computing, Power generation faults, Wind power plants, Failure analysis, Power generation reliability, Fuzzy neural nets, Wind turbines, Fuzzy reasoning, SCADA systems.
Full text:(AM) Accepted Manuscript
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Publisher statement:This paper is a postprint of a paper submitted to and accepted for publication in IET Renewable Power Generation and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library.
Date accepted:03 October 2014
Date deposited:06 October 2015
Date of first online publication:20 February 2015
Date first made open access:No date available

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