Journal of Changjiang River Scientific Research Institute ›› 2024, Vol. 41 ›› Issue (12): 9-14.DOI: 10.11988/ckyyb.20230804

• Water Resources • Previous Articles     Next Articles

Predicting Maximum and Minimum Future Water Levels in front of Three Gorges Dam Using Deep Learning

WANG Yong-qiang1,2,3(), ZHANG Sen1,2,3, XIE Shuai1,2,3(), ZHOU Tao1,2,3   

  1. 1 Water Resources Department, Changjiang River Scientific Research Institute, Wuhan 430010, China
    2 Hubei Provincial Key Laboratory of Basin Water Resources and Eco-environmental Sciences,Changjiang RiverScientific Research Institute,Wuhan 430010,China
    3 Research Center on Protection and Development Strategyfor Yangtze River Economic Belt, Changjiang Water Resources Commission, Wuhan 430010, China
  • Received:2023-07-24 Revised:2023-09-18 Published:2024-12-01 Online:2024-12-01

Abstract:

The maximum and minimum water levels are crucial constraints in the calculation of cascade reservoir operations and the economic operation of hydropower stations. Traditional iterative methods for multi-period predictions lack credibility due to error accumulation. This study employs a Long Short-Term Memory (LSTM) model which is effective in handling time series problems to predict the maximum and minimum water levels of the Three Gorges Reservoir over the next four days. Two LSTM-based deep learning models incorporating different characteristic variables are developed, and a conventional forecast model based on the water balance framework is also constructed for comparison. Results demonstrate that the deep learning model, which considers the propagation law of water surface profiles in the Three Gorges Reservoir area, delivers accurate and stable predictions, achieving an absolute error of less than 40 cm for 99% of the predictions.

Key words: economic operation of hydropower station, water level prediction, LSTM, deep learning, neural network, Three Gorges hydropower station

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