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首页> 外文期刊>Mechanical systems and signal processing >Nonlinear modeling and dynamic analysis of a hydro-turbine governing system in the process of sudden load increase transient
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Nonlinear modeling and dynamic analysis of a hydro-turbine governing system in the process of sudden load increase transient

机译：水轮机调节系统在负荷突然增加过程中的非线性建模和动力学分析

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摘要

In order to study the nonlinear dynamic behaviors of a hydro-turbine governing system in the process of sudden load increase transient, we establish a novel nonlinear dynamic model of the hydro-turbine governing system which considers the elastic water-hammer model of the penstock and the second-order model of the generator. The six nonlinear dynamic transfer coefficients of the hydro-turbine are innovatively proposed by utilizing internal characteristics and analyzing the change laws of the characteristic parameters of the hydro-turbine governing system. Moreover, from the point of view of engineering, the nonlinear dynamic behaviors of the above system are exhaustively investigated based on bifurcation diagrams and time waveforms. More importantly, all of the above analyses supply theoretical basis for allowing a hydropower station to maintain a stable operation in the process of sudden load increase transient.
机译：为了研究水轮机调节系统在突然增加负荷的过程中的非线性动力学行为，我们建立了一种新的水轮机调节系统非线性动力学模型，该模型考虑了压力管道的弹性水锤模型和生成器的二阶模型。通过利用内部特性并分析水轮机调节系统特征参数的变化规律，创新性地提出了水轮机的六个非线性动力传递系数。此外，从工程学的角度，基于分叉图和时间波形，对上述系统的非线性动力学行为进行了详尽的研究。更重要的是，以上所有分析为水力发电站在突然增加负荷的过程中保持稳定运行提供了理论基础。

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  • 来源
    《Mechanical systems and signal processing》 |2016年第12期|414-428|共15页
  • 作者

    Huanhuan Li; Diyi Chen; Hao Zhang; Feifei Wang; Duoduo Ba;

  • 作者单位

    Institute of Water Resources and Hydropower Research, Northwest A&F University, Shaanxi Yangling 712100, PR China;

    Institute of Water Resources and Hydropower Research, Northwest A&F University, Shaanxi Yangling 712100, PR China,Department of Mathematics and Statistics, Faculty of Science and Engineering Curtin University, Perth, Western Australia 6845, Australia;

    Institute of Water Resources and Hydropower Research, Northwest A&F University, Shaanxi Yangling 712100, PR China;

    Institute of Water Resources and Hydropower Research, Northwest A&F University, Shaanxi Yangling 712100, PR China;

    Institute of Water Resources and Hydropower Research, Northwest A&F University, Shaanxi Yangling 712100, PR China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Hydro-turbine; Mathematical modeling; Sudden load increase; Dynamic transfer coefficients; Nonlinear dynamics;

    机译：水轮机数学建模;负载突然增加;动态传递系数;非线性动力学;

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