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Optimization of Guide Vane Airfoil Shape of Pump Turbine Based on SVM-MDMR Model

  • Research Article-Mechanical Engineering
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Abstract

Pumped storage is an important green, low-carbon, and clean flexible regulating power source in the power system, which can provide regulation services for the power system, promote the construction of a new type of power system, and facilitate the green transformation of energy. To improve the efficiency and stability of the centrifugal pump turbine under multiple operating conditions, a surrogate model combining radial basis functions with a high-dimensional model is used for performance optimization. Taking the active guide vane of the centrifugal pump turbine as the research object, the airfoil profile is parameterized, and the surrogate model's independent variables and training range are determined. Combining programming and numerical simulation software, an efficiency prediction model for the centrifugal pump and water turbine based on guide vane airfoil control variables is constructed. The particle swarm algorithm is used to globally optimize the constructed model to obtain the optimal efficiency point and corresponding airfoil-related parameters. Finally, numerical simulation and experimental research methods are used to validate the predicted data. The results show that under the premise of ensuring grid performance and operational stability, the numerical simulation efficiency of the pump turbine under the optimization scheme is increased by 1.6 and 0.32%, respectively, compared to the numerical efficiency of the prototype guide vane. In the experimental case, the efficiency of the water turbine and pump is increased by 0.76 and 0.14%, respectively, compared to the prototype guide vane.

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Data Availability

Data are available upon reasonable request to the authors.

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Acknowledgements

This study was supported by the National Natural Science Foundation of China (Grant Nos. 52066011: A study of optimization of active guide vanes of pump turbines and the effect of their control theory on internal flow characteristics )

Funding

National Natural Science Foundation of China (52066011).

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Authors and Affiliations

  1. School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou, 730050, Gansu, China

    Qifei Li, Lu Xin & Lei Yao

  2. Gansu Key Laboratory of Fluid Machinery and Systems, Lanzhou, 730050, Gansu, China

    Qifei Li

  3. Tianjin Key Laboratory of Hydropower Equipment, Tianjin, China

    Shiang Zhang

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  1. Qifei Li
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  2. Lu Xin
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  3. Lei Yao
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  4. Shiang Zhang
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All authors contributed to this work equally in their respective meaningful ways.

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Correspondence to Qifei Li.

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Li, Q., Xin, L., Yao, L. et al. Optimization of Guide Vane Airfoil Shape of Pump Turbine Based on SVM-MDMR Model. Arab J Sci Eng (2024). https://doi.org/10.1007/s13369-024-08807-y

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