This paper proposes a method in order to effectively extract the relevant features of the data in the integrated energy system(IES)
identify the important features in the multi-load forecasting task
and improve the prediction accuracy and speed of multi-load forecasting. In this paper
a short-term prediction model of multiple loads in an integrated energy system based on an improved convolutional neural network(CNN) and an attention mechanism is proposed
which realizes dual feature recognition and accurate prediction of multiple loads. Firstly
the correlation analysis of the data is carried out to screen out the meteorological characteristics with strong correlation with multiple loads
and then improved complete ensemble empirical mode decomposition with adaptive noise (ICEEMDAN) is carried out on the electrical
cooling and heating load data
and the complex multi-load time series is efficiently decomposed into K intrinsic modes (IMFs)
and the correlation analysis of IMFs is carried out to screen out the key IMFs. Secondly
CNN is used for feature recognition
wherelocal important features of the data are extracted
and then the gated recurrent unit (GRU) is used to capture the dynamic changes of the time series data. Then
the attention mechanism is introduced to realize the dual feature recognition
enhance the attention of the model to the key features
and improve the accuracy of prediction. Finally
the multivariate load data of Arizona State University Tempe Campus were used for experimental testing
and comparative models were used for comparative analysis. The results show that the average absolute percentage errors of electrical
cooling and heating loads of the proposed method are 5.1%
4.23% and 3.68%
respectively
which has higher prediction accuracy and faster computational speed than other models.
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