Liu Yang, Wang Cong, Zhang Hongli, et al. WIND VECTOR DECOMPOSITION AND ROBUSTSTL-TIMESNET-BIGRU WIND DIRECTION FORECASTING IN COMPLEX TERRAIN[J]. 2025, 46(3): 576-588.
Liu Yang, Wang Cong, Zhang Hongli, et al. WIND VECTOR DECOMPOSITION AND ROBUSTSTL-TIMESNET-BIGRU WIND DIRECTION FORECASTING IN COMPLEX TERRAIN[J]. 2025, 46(3): 576-588. DOI: 10.19912/j.0254-0096.tynxb.2023-1828.
WIND VECTOR DECOMPOSITION AND ROBUSTSTL-TIMESNET-BIGRU WIND DIRECTION FORECASTING IN COMPLEX TERRAIN
Aiming at wind direction forecasting in complex terrain
this paper proposes a multi-step wind direction forecasting method based on wind vector orthogonal decomposition
Robust Seasonal-Trend decomposition using Loess (RobustSTL)
the TimesNet model
and a bidirectional gated recurrent unit network (BiGRU) for error compensation. Firstly
to reduce the significant fluctuation caused by the circular characteristics of the original wind direction
the wind direction and the correlated wind speed are converted into a less fluctuating vector wind speed using the wind vector orthogonal decomposition method. This vector wind speed is then decomposed into trend
seasonal
and residual components using RobustSTL. Secondly
each component after decomposition is trained using the TimesNet model
and preliminary forecasting results are obtained. The components are then summed and reconstructed to form the initial wind direction forecast. To further extract deep features from the initial forecasting errors and enhance accuracy
the BiGRU network is used for modeling and training the forecasting errors. Finally
the predicted error is combined with the initial forecast to obtain the final wind direction forecast. The proposed multi-step wind direction forecasting hybrid model is validated using real data from a complex terrain wind farm
and the results demonstrate its high forecasting accuracy.
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references
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