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Oil Monitoring and Fault Pre-Warning of Wind Turbine Gearbox Based on Combined Predicting Method

Author

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  • Xiangfu Zou

    (College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
    Hunan Sunward Science and Technologies Co., Ltd., Zhuzhou 412000, China)

  • Jie Zhang

    (Wind Power Division, Zhuzhou Electric Locomotive Research Institute Co., Zhouzhou 412000, China)

  • Jian Chen

    (College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China)

  • Ognjen Orozovic

    (School of Engineering, The University of Newcastle, Callaghan 2308, Australia)

  • Xihua Xie

    (College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China)

  • Jiejie Li

    (College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China)

Abstract

Oil monitoring for wind turbine gearboxes can reflect wear and lubrication conditions, and better identify pits on the tooth surface, fatigue wear, and other early faults. However, oil monitoring with one or several single predicting models brings inaccuracy due to the intrinsic merits and demerits of the models. In this work, oil monitoring and fault pre-warning of wind turbine gearboxes were studied based on oil inspection data of three wind turbines that have been working continuously for 3.5 years. The Grey Model (GM) and the Double Exponential Smoothing (DES) were combined by a modified inverse-variance weighting method proposed in this work, which used relative errors to calculate weight coefficients, reducing the errors and improving the accuracy as a whole. The predicted data were compared with the measured data to verify the predicting accuracy. Subsequently, a statistical method and linear regression method were adopted to jointly develop a pre-warning threshold for the oil inspection data. Comparing the predicted data with the threshold, the results showed that one of the wind turbines was in a warning state. The prediction was validated by an endoscope inspection of the gearbox, which found that some parts were slightly worn.

Suggested Citation

  • Xiangfu Zou & Jie Zhang & Jian Chen & Ognjen Orozovic & Xihua Xie & Jiejie Li, 2023. "Oil Monitoring and Fault Pre-Warning of Wind Turbine Gearbox Based on Combined Predicting Method," Sustainability, MDPI, vol. 15(4), pages 1-16, February.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:4:p:3802-:d:1073813
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    References listed on IDEAS

    as
    1. Wei Teng & Xiaolong Zhang & Yibing Liu & Andrew Kusiak & Zhiyong Ma, 2016. "Prognosis of the Remaining Useful Life of Bearings in a Wind Turbine Gearbox," Energies, MDPI, vol. 10(1), pages 1-16, December.
    2. Ding, Fangfang & Tian, Zhigang & Zhao, Fuqiong & Xu, Hao, 2018. "An integrated approach for wind turbine gearbox fatigue life prediction considering instantaneously varying load conditions," Renewable Energy, Elsevier, vol. 129(PA), pages 260-270.
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