摘要
Optimization of the closing law of the guide vane is the most economical and efficient way to reduce the risk incurred by pressure and speed excursions,thus guaranteeing the security of the hydro-turbine and the whole hydraulic network.In order to optimize the closing law of the guide vane of hydraulic turbine,an improved artificial ecosystem optimization algorithm was proposed(IAEO).The reverse learning was used to initialize the population,multi-strategy bound handing schemes was used to improve the algorithm convergence speed.Twenty-three mathematical benchmark functions were used to test the IAEO.Results showed an improvement in the IAEO algorithm convergence speed and a stronger exploration than other algorithms.IAEO algorithm was used to optimize the closing law of the guide vane of hydraulic turbine based on the hydraulic transient calculation.The results showed that the maximum pressure in the spiral casing inlet,the minimum pressure in the draft tube inlet and the maximum speed all meet the design requirements by use of the closing law of the guide vane optimized by IAEO.Compared with other algorithms such as particle swarm optimization(PSO),artificial ecosystem-based optimization(AEO)and grey wolf optimizer(GWO),the closing law of the guide vane optimized by IAEO algorithm was proved to be of great advantages in distribution of safety margin of each optimization goal.
基金
supported by the National Natural Science Foundation of China(Grant Nos.51879140,11972144 and 12072098)
supported by the One Hundred Outstanding Innovative Scholars of Collegessand Universities inHebeiProvince(Grant No.SLRC2019022)
the State Key Laboratoryof Hydroscience and Engineering,Tsinghua University(Grant No.2021-KY-04)
Tsinghua-Foshan Innovation Special Fund(TFISF)(Grant No.2021THFS0209)
the Creative Seed Fund of Shanxi Research Institute for Clean Energy,Tsinghua University.
作者简介
Li-ying Wang(1978-),Female,Ph.D.,Professor,E-mail:wangliying@hebeu.edu.cn;Corresponding author:Hong-gang Fan,E-mail:fanhg@tsinghua.edu.cn。
