A Multivariate Spatiotemporal Feature Fusion Network for Wind Turbine Gearbox Condition Monitoring

被引:0
|
作者
Dai, Shixian [1 ]
Han, Shuang [1 ]
Bai, Xinjian [1 ]
Kang, Zijian [1 ]
Liu, Yongqian [1 ]
机构
[1] North China Elect Power Univ, Sch New Energy, State Key Lab Alternate Elect Power Syst Renewable, Beijing 102206, Peoples R China
关键词
wind turbine gearbox; graph convolutional network; temporal convolutional network; long short-term memory network; anomaly detection; ANOMALY DETECTION; FAULT-DIAGNOSIS; SCADA DATA;
D O I
10.3390/en18051273
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
SCADA data, due to their easy accessibility and low cost, have been widely applied in wind turbine gearbox condition monitoring. However, the high-dimensional and nonlinear nature of the collected data, along with the insufficient spatiotemporal feature capabilities of existing methods and the lack of consideration of the physical mechanisms of wind turbine operation, limit the accuracy of monitoring models. In this paper, a multivariate spatiotemporal feature fusion network is proposed for wind turbine gearbox condition monitoring. First, by analyzing the operational mechanism of wind turbines and the correlation between sensor data, the time series data are transformed into graph data. Then, graph convolutional networks and temporal convolutional networks are used to extract spatial and temporal features, respectively. Next, long short-term memory networks are employed to fuse the extracted temporal and spatial features, further capturing long-term spatiotemporal dependencies. Finally, the proposed method is validated using real data from two wind turbines. Experimental results show that the proposed method reduces the RMSE by 29.67% and 17.61% compared to the best-performing models. Moreover, the proposed method provides early warning signals 188.6 h and 133.67 h in advance, achieving stable and efficient early anomaly detection for wind turbines.
引用
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页数:22
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