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Energies 2018, 11(3), 553; https://doi.org/10.3390/en11030553

Data-Driven Method for Wind Turbine Yaw Angle Sensor Zero-Point Shifting Fault Detection

1
School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing 100083, China
2
Beijing Power Concord Technology Co. Ltd. Beijing 100048, China
*
Author to whom correspondence should be addressed.
Received: 10 February 2018 / Revised: 24 February 2018 / Accepted: 1 March 2018 / Published: 5 March 2018
(This article belongs to the Section Sustainable Energy)
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Abstract

Wind turbine yaw control plays an important role in increasing the wind turbine production and also in protecting the wind turbine. Accurate measurement of yaw angle is the basis of an effective wind turbine yaw controller. The accuracy of yaw angle measurement is affected significantly by the problem of zero-point shifting. Hence, it is essential to evaluate the zero-point shifting error on wind turbines on-line in order to improve the reliability of yaw angle measurement in real time. Particularly, qualitative evaluation of the zero-point shifting error could be useful for wind farm operators to realize prompt and cost-effective maintenance on yaw angle sensors. In the aim of qualitatively evaluating the zero-point shifting error, the yaw angle sensor zero-point shifting fault is firstly defined in this paper. A data-driven method is then proposed to detect the zero-point shifting fault based on Supervisory Control and Data Acquisition (SCADA) data. The zero-point shifting fault is detected in the proposed method by analyzing the power performance under different yaw angles. The SCADA data are partitioned into different bins according to both wind speed and yaw angle in order to deeply evaluate the power performance. An indicator is proposed in this method for power performance evaluation under each yaw angle. The yaw angle with the largest indicator is considered as the yaw angle measurement error in our work. A zero-point shifting fault would trigger an alarm if the error is larger than a predefined threshold. Case studies from several actual wind farms proved the effectiveness of the proposed method in detecting zero-point shifting fault and also in improving the wind turbine performance. Results of the proposed method could be useful for wind farm operators to realize prompt adjustment if there exists a large error of yaw angle measurement. View Full-Text
Keywords: data-driven method; wind turbine; yaw angle; zero-point shifting; fault detection data-driven method; wind turbine; yaw angle; zero-point shifting; fault detection
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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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Pei, Y.; Qian, Z.; Jing, B.; Kang, D.; Zhang, L. Data-Driven Method for Wind Turbine Yaw Angle Sensor Zero-Point Shifting Fault Detection. Energies 2018, 11, 553.

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