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<p>Traditional optimization algorithms often suffer from slow convergence and are prone to local optima in multi-reservoir flood control operation problems. In this paper, an improved grey wolf optimizer (IGWO) combined with Lévy flight and random walk strategies is proposed and applied to reservoir flood control optimal operation. A joint flood control system consisting of Sanmenxia, Xiaolangdi, Luhun, and Guxian reservoirs in the middle and lower Yellow River is selected as the study case, and a joint optimal operation model is established with the objective of maximizing flood peak reduction. IGWO is compared with GWO, DBO, SABO, POA, HHO, and PSO.Results show that IGWO performs best in minimizing the discharge at the Huayuankou section, achieving a peak discharge of 18906.32&#xa0;m³/s and a flood peak attenuation rate of 50.09%.This study provides an effective method for calculating and solving flood control scheduling of reservoir groups.</p>

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Application of the IGWO Algorithm for Flood Control in Reservoir Groups in Optimal Operation

  • 期刊论文

  • 发表日期：

    2026年5月21日

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  • Hai-tao Chen,
  • Shu-min Li,
  • Xiao-qi Guo,
  • Yuan-yuan Liu,
  • Wen Guo

摘要

Traditional optimization algorithms often suffer from slow convergence and are prone to local optima in multi-reservoir flood control operation problems. In this paper, an improved grey wolf optimizer (IGWO) combined with Lévy flight and random walk strategies is proposed and applied to reservoir flood control optimal operation. A joint flood control system consisting of Sanmenxia, Xiaolangdi, Luhun, and Guxian reservoirs in the middle and lower Yellow River is selected as the study case, and a joint optimal operation model is established with the objective of maximizing flood peak reduction. IGWO is compared with GWO, DBO, SABO, POA, HHO, and PSO.Results show that IGWO performs best in minimizing the discharge at the Huayuankou section, achieving a peak discharge of 18906.32 m³/s and a flood peak attenuation rate of 50.09%.This study provides an effective method for calculating and solving flood control scheduling of reservoir groups.