To address the challenges of existing deep learning prediction models
such as long training times and a tendency to fall into local optimum
this paper proposes an innovative KOA-driven VMD-CNN-BiGRU-Attention method for short-term photovoltaic (PV) output power prediction. Firstly
the Pearson correlation coefficient is employed to identify key meteorological factors. Then
the grey relational analysis (GRA) method is used to determine the historical similarity days for the predicted days. The Keplerian Optimization Algorithm (KOA) is then used to optimize the parameters of variational mode decomposition (VMD)
which decomposes the output sequences of historical similarity days to generate a high-quality training sample set. Finally
the VMD-CNN-BiGRU-Attention model
driven by KOA
is constructed to achieve accurate PV output power prediction. Practical applications at PV power stations in Yunnan and Gansu show that the model achieves RMSE values of 0.2540 MW and 2.7981 MW
and MAPE values of 0.0234 and 1.1699
respectively. Compared with other combined prediction models
the proposed KOA-driven VMD-CNN-BiGRU-Attention model demonstrates superior ability to capture spatiotemporal features
offering significant improvements in prediction accuracy and stability. These results highlight the broad application potential of the model in PV power generation prediction.
LI Q, ZHANG X, MA T, et al.A multi-step ahead photovoltaic power prediction model based on similar day, enhanced colliding bodies optimization, variational mode decomposition, and deep extreme learning machine[J]. Energy, 2021, 224(2): 120094-120094.
WANG S J, LIU S, GUAN X.Ultra-short-term power prediction of a photovoltaic power station based on the VMD-CEEMDAN-LSTM model[J]. Frontiers in energy research, 2022, 10:945327.