Joint Forecasting Method of Wind and Solar Outputs Considering Temporal and Spatial Correlation
Ziran Yuan,
Pengli Zhang,
Bo Ming,
Xiaobo Zheng (zhengxbb@163.com) and
Lu Tian
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Ziran Yuan: School of Water Resources and Hydroelectric Engineering, Xi’an University of Technology, Xi’an 710048, China
Pengli Zhang: Hanjiang-to-Weihe River Valley Water Diversion Project Construction Co., Ltd., Xi’an 710024, China
Bo Ming: School of Water Resources and Hydroelectric Engineering, Xi’an University of Technology, Xi’an 710048, China
Xiaobo Zheng: School of Water Resources and Hydroelectric Engineering, Xi’an University of Technology, Xi’an 710048, China
Lu Tian: School of Water Resources and Hydroelectric Engineering, Xi’an University of Technology, Xi’an 710048, China
Sustainability, 2023, vol. 15, issue 19, 1-16
Abstract:
In response to the problem of low forecasting accuracy in wind and solar power outputs, this study proposes a joint forecasting method for wind and solar power outputs by using their spatiotemporal correlation. First, autocorrelation analysis and causal testing are used to screen the forecasting factors. Then, a convolutional neural network–long short-term memory (CNN-LSTM) is constructed and trained to extract features effectively. Finally, the independent, ensemble, and joint forecasting effects are compared, using a certain clean energy base as the research object. Results show that the forecasting accuracy of the ensemble wind and solar power outputs is better than that of independent forecasting. The joint forecasting method can improve the forecasting accuracy of wind power by 20% but slightly affects the forecasting accuracy of solar power.
Keywords: wind and solar power output forecasting; temporal and spatial correlation; CNN-LSTM; ensemble forecasting; joint forecasting (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:15:y:2023:i:19:p:14628-:d:1256112
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