Dynamic Analysis of Hydro-Turbine Governing System With Multistochastic Factors

被引:2
|
作者
Li, Jianling [1 ,2 ]
Chen, Diyi [1 ,2 ,3 ]
Zhang, Hao [1 ,2 ]
Liu, Jing [1 ,2 ]
机构
[1] Northwest A&F Univ, Minist Educ, Key Lab Agr Soil & Water Engn Arid & Semiarid Are, Yangling 712100, Shaanxi, Peoples R China
[2] Northwest A&F Univ, Inst Water Resources & Hydropower Res, Yangling 712100, Shaanxi, Peoples R China
[3] Curtin Univ, Sch Built Environm, Australasian Joint Res Ctr Bldg Informat Modellin, Perth, WA 6102, Australia
来源
基金
中国国家自然科学基金;
关键词
hydro-turbine governing system; multistochastic factors; stochastic intensity; dynamic characteristics; REGULATING SYSTEM; POWER-PLANT; WATER; DESIGN; OPTIMIZATION; PARAMETERS; STABILITY; EVOLUTION; TRANSIENT; QUALITY;
D O I
10.1115/1.4043834
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
This paper explores the stability of a hydro-turbine governing system (HTGS) under simultaneous effects of multistochastic factors. Specifically, three different sets of stochastic factors are introduced into the governing system, and the corresponding mathematical model with multistochastic factors is proposed. Then, seven cases are performed to reveal the dynamic characteristics of the governing system, including the excitations of only single stochastic factor, two stochastic factors, and three stochastic factors with different combinations of stochastic parameters. The results show some interesting phenomena. First, the stability of the system is weakened by introducing stochastic variables omega(2) and omega(3) into the inlet pressure of hydro-turbine (h(2)) and the bottom pressure of the surge tank (h(3)) separately, or both. Second, the negative effects of the stochastic characteristics of h(2) and h(3) on the governing system are reduced by introducing the stochastic variable (omega(1)) into the hydro-turbine flow (q(1)), on the basis of fully considering the influence of the stochastic characteristics of h(2) and h(3). Third, stochastic factors are generally considered to be unfavorable, but it may help the system to reach a global optimum status under certain conditions, which break through the habit of empirical thinking. Finally, this work not only provides a new insight for stochastic phenomena existing in engineering system, but also lays a theoretical basis for the safe and stable operation of the hydropower stations.
引用
收藏
页数:9
相关论文
共 50 条
  • [1] A review of dynamic models and stability analysis for a hydro-turbine governing system
    Xu, Beibei
    Zhang, Jingjing
    Egusquiza, Monica
    Chen, Diyi
    Li, Feng
    Behrens, Paul
    Egusquiza, Eduard
    [J]. RENEWABLE & SUSTAINABLE ENERGY REVIEWS, 2021, 144
  • [2] Nonlinear dynamic analysis for a Francis hydro-turbine governing system and its control
    Chen, Diyi
    Ding, Cong
    Do, Younghae
    Ma, Xiaoyi
    Zhao, Hua
    Wang, Yichen
    [J]. JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS, 2014, 351 (09): : 4596 - 4618
  • [3] Bifurcation analysis of hydro-turbine governing system with saturation nonlinearity
    Ling, Daijian
    Shen, Zuyi
    [J]. Shuili Fadian Xuebao/Journal of Hydroelectric Engineering, 2007, 26 (06): : 126 - 131
  • [4] Piecewise modeling and dynamic analysis of hydro-turbine governing system in the process of shutdown transient
    Chen, Yuansheng
    Tong, Fei
    [J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 2021, 35 (09):
  • [5] Nonlinear modeling and dynamic analysis of hydro-turbine governing system in the process of load rejection transient
    Zhang, Hao
    Chen, Diyi
    Xu, Beibei
    Wang, Feifei
    [J]. ENERGY CONVERSION AND MANAGEMENT, 2015, 90 : 128 - 137
  • [6] A novel analysis method for fault diagnosis of hydro-turbine governing system
    Xia, Xin
    Ni, Wei
    Sang, Yingjun
    [J]. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART O-JOURNAL OF RISK AND RELIABILITY, 2017, 231 (02) : 164 - 171
  • [7] Stability analysis of hydro-turbine governing system based on machine learning
    Chen, Yuansheng
    Tong, Fei
    [J]. CHINESE PHYSICS B, 2021, 30 (12)
  • [8] Nonlinear dynamical analysis of hydro-turbine governing system with a surge tank
    Chen, Diyi
    Ding, Cong
    Ma, Xiaoyi
    Yuan, Pu
    Ba, Duoduo
    [J]. APPLIED MATHEMATICAL MODELLING, 2013, 37 (14-15) : 7611 - 7623
  • [9] Stability analysis of hydro-turbine governing system based on machine learning
    陈元盛
    仝飞
    [J]. Chinese Physics B, 2021, 30 (12) : 180 - 186
  • [10] Nonlinear modeling and stability analysis of asymmetric hydro-turbine governing system
    Lai, Xinjie
    Huang, Huimin
    Zheng, Bo
    Li, Dedi
    Zong, Yue
    [J]. APPLIED MATHEMATICAL MODELLING, 2023, 120 : 281 - 300