Aiming at the problem that the large uncertainty of PV power leads to its low prediction accuracy
a short-term prediction method of PV power based on improved phase space reconstruction and multi-channel convolution-feature pyramid networks(FPN) is proposed. Firstly
the phase space reconstruction method is improved to reduce the computation by finding the delay time via maximum joint entropy based on symbolic analysis
and the embedding dimension for unfolding the chaotic structure is quickly and automatically determined by the improved Cao algorithm
which has accuracy and efficiency. Then we reconstruct the PV power with the improved phase space method and prove that it has chaotic characteristics
extract the chaotic features by multi-channel convolutional neural network (Mul-CNN)
and at the same time
utilize the FPN network to fuse the chaotic features of the PV power with the meteorological features as the dynamic input features of the FPN network
to fully exploit the chaotic features of the FPN network. network
fully exploiting the spatial features between the data
and finally obtaining the prediction results through multiple fully connected layers. The method is evaluated on a domestic public dataset to do experiments
and compared with other network models
it proves that the prediction model is more accurate.
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