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Energies 2017, 10(10), 1583; doi:10.3390/en10101583

Estimating Health Condition of the Wind Turbine Drivetrain System

1
Engineering Department, Lancaster University, Lancaster LA1 4YW, UK
2
Ocean College, Zhejiang University, Hangzhou 310058, China
*
Author to whom correspondence should be addressed.
Received: 4 September 2017 / Revised: 30 September 2017 / Accepted: 10 October 2017 / Published: 12 October 2017
(This article belongs to the Special Issue Wind Generators Modelling and Control)
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Abstract

Condition Monitoring (CM) has been considered as an effective method to enhance the reliability of wind turbines and implement cost-effective maintenance. Thus, adopting an efficient approach for condition monitoring of wind turbines is desirable. This paper presents a data-driven model-based CM approach for wind turbines based on the online sequential extreme learning machine (OS-ELM) algorithm. A physical kinetic energy correction model is employed to normalize the temperature change to the value at the rated power output to eliminate the effect of variable speed operation of the turbines. The residual signal, obtained by comparing the predicted values and practical measurements, is processed by the physical correction model and then assessed with a Bonferroni interval method for fault diagnosis. Models have been validated using supervisory control and data acquisition (SCADA) data acquired from an operational wind farm, which contains various types of temperature data of the gearbox. The results show that the proposed method can detect more efficiently both the long-term aging characteristics and the short-term faults of the gearbox. View Full-Text
Keywords: condition monitoring; online sequential extreme learning machine (OS-ELM); Bonferroni interval; health condition; drivetrain; wind turbine condition monitoring; online sequential extreme learning machine (OS-ELM); Bonferroni interval; health condition; drivetrain; wind turbine
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Qian, P.; Ma, X.; Zhang, D. Estimating Health Condition of the Wind Turbine Drivetrain System. Energies 2017, 10, 1583.

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