王〓超1,张德虎1,唐兆祥2.非线性水轮机调节系统的Hopf分岔分析[J].水电能源科学,2018,36(9):148-151
非线性水轮机调节系统的Hopf分岔分析
Hopf Bifurcation Analysis of Nonlinear Hydro Turbine Governing System
  
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中文关键词:  水轮发电机组  非线性调节系统  线性调节系统  Hopf分岔  稳定运行
英文关键词:hydro generator unit  non linear governing system  linear governing system  Hopf bifurcation  steady operation
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作者单位
王〓超1,张德虎1,唐兆祥2 1. 河海大学 能源与电气学院 江苏 南京 211100 2. 雅砻江流域水电开发有限公司 四川 成都 610051 
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中文摘要:
      水力发电系统具有非线性特性,利用线性模型分析水轮机调节系统会导致仿真结果不准确。为此,在考虑水轮机调节系统各部分非线性情况下建立了水轮机调节系统的非线性模型。基于Hopf分岔理论对建立的非线性调节系统模型进行分析和仿真,比较线性模型与非线性模型动态特性。结果表明,非线性系统模型能更准确地反映系统大扰动情况下的本质特性,PID参数变化会引起非线性系统拓扑结构的变化。
英文摘要:
      The hydropower system has nonlinear characteristics. Using the linear model to analyze hydro turbine governing system will lead to inaccurate simulation results. For this reason, a non linear model of hydro turbine governing system was established considering the non linearity of each part of the hydro turbine governing system. The stability analysis and simulation were carried out for nonlinear hydro turbine governing system based on Hopf bifurcation theory, and the dynamic characteristics of linear model and nonlinear model were compared. The results show that the nonlinear system model can more accurately reflect the essential characteristics of the system under large disturbances, and the change of PID parameters can lead to the change of the topology of nonlinear system.
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