Optimized deep learning for ultra-short-term wind power prediction in coastal and offshore wind farms
摘要
Coastal regions are vital for global renewable energy, but wind speed variability, influenced by water vapor and land-sea interactions, challenges ultra-short-term wind power forecasting. This study introduces the VMD-WOA-TCN-LSTM method (Variational Mode Decomposition-Whale Optimization Algorithm-Temporal Convolutional Network-Long Short-Term Memory) to improve prediction accuracy in coastal areas. Using historical wind speed and power data from two wind farms during Typhoons DANAS and LEKIMA (2019) along China’s Yellow Sea coast, the method’s performance was evaluated against other models. Key findings include: (i) The VMD-WOA-TCN-LSTM model outperformed others, achieving MAE = 45 and R2 = 0.8 for coastal turbines, and MAE = 0.8 and R2 = 0.95 for offshore turbines. (ii) Turning points in wind power time series were identified as major error sources. (iii) Wind turbine performance parameters were determined: cut-in wind speed of 1.6 m/s, cut-out wind speed of 24.7 m/s, and rated power output at 15.9 m/s. Accurate ultra-short-term forecasting is crucial for optimizing power systems, supporting sustainable growth, and advancing global carbon neutrality goals.