Analytical-numerical analysis of closed-form dynamic model of Sayano-Shushenskaya hydropower plant : stability, oscillations, and accident
Kuznetsov, N.V., Yuldashev, M.V., & Yuldashev, R.V. (2021). Analytical-numerical analysis of closed-form dynamic model of Sayano-Shushenskaya hydropower plant : stability, oscillations, and accident. Communications in Nonlinear Science and Numerical Simulation, 93, Article 105530. https://doi.org/10.1016/j.cnsns.2020.105530
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This work is devoted to the analysis of a mathematical model of hydropower unit, consisting of synchronous generator, hydraulic turbine, and speed governor. It is motivated by the accident happened on the Sayano-Shushenskaya hydropower plant in 2009 year. In the analysis we follow the line of classical control theory approach developed in the works of famous scientists J.C. Maxwell, I.A. Vishnegradsky, A.A. Andronov, and F. Tricomi for the study of centrifugal turbine governor and electrical machines limit-load problem. It is shown that the occurrence of vibrations in the Sayano-Shushenskaya hydropower plant can be caused by nonlinear dynamics of the closed-form model.
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Additional information about fundingThis work was supported by Russian Science Foundation project 19-41-02002 (sections 1-8) and the Leading Scientific Schools project NSh-2624.2020.1 (sections 9-10).
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