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    Reconstruction of the complete characteristics of the hydro turbine based on inner energy loss

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    Guo_Nonlinear_Dynamics.pdf (927.3Kb)
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    Publication date
    2016-10
    Author
    Qian, J.
    Zeng, Y.
    Guo, Yakun
    Zhang, L.
    Keyword
    Hydro turbine; Inner energy loss; Characteristic parameter; Mechanical friction loss; Complete characteristics
    Rights
    The final publication is available at Springer via http://dx.doi.org/ 10.1007/s11071-016-2937-4
    Peer-Reviewed
    Yes
    
    Metadata
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    Abstract
    The power output characteristics of the hydro turbine is one of the core contents for transient calculation of the hydro turbine generating sets (HTGS). In particular, the hydro turbine operates far beyond the given parameters region during the load rejection transient. As such, obtaining the complete characteristics of the hydro turbine becomes one of the key issues in calculating the transient process. In this study, methods for calculating the energy losses are proposed by analyzing the general characteristics of the inner energy losses within the hydro turbine. Characteristic parameters in the hydro turbine power model are calculated from the synthetical characteristics of the model hydro turbine. The transient power model of the hydro turbine has been established and applied to calculate and reconstruct the complete characteristics of the hydro turbine. Furthermore, the relationship curve between the mechanical friction loss power and the rotation speed under different head can be established by combing the runaway curve with the proposed turbine power model. This relationship is applied to construct the complete characteristics of the mechanical friction loss. Combining the proposed two complete characteristics, the power model of the hydro turbine is suitable for simulation with a wide range of fluctuations as well as the load rejection transient. Details of the computational procedures are presented and demonstrated using a case study.
    URI
    http://hdl.handle.net/10454/8604
    Version
    Accepted Manuscript
    Citation
    Qian J, Zeng Y, Guo Y and Zhang L (2016) Reconstruction of the complete characteristics of the hydro turbine based on inner energy loss. Nonlinear Dynamics. 86(2): 963-974.
    Link to publisher’s version
    http://dx.doi.org/ 10.1007/s11071-016-2937-4
    Type
    Article
    Collections
    Engineering and Informatics Publications

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