Medium-term load forecasting of power system based on BiLSTM and parallel feature extraction network

Abstract

With the diversification of users’ energy demands, accurate load forecasting is an important prerequisite for optimal scheduling and economic operation of the system, but a single-load forecasting method cannot effectively predict multi-energy loads accurately. Therefore, this paper proposes a multi-energy load forecasting method based on bidirectional long short-term memory (BiLSTM) and parallel feature extraction networks. Firstly, residual network and convolutional block attention module were used to extract the spatial coupling features of multi-energy load data. Secondly, BiLSTM is used to capture the temporal features and long-term dependencies in the load data, and the spatial coupling features are fused to obtain non-linear prediction results. Finally, the non-linear prediction results and the linear prediction results obtained by using multi-energy linear regression were linearly superimposed to obtain the final prediction results. In this paper, IES load data of Tempe Campus of Arizona State University was used to verify and compared with several existing methods, and the results showed that Weighted Mean Absolute Percentage Error decreased by more than 20%.