A dynamical model of Sayano-Shushenskaya hydropower plant: stability, oscillations, and accident
G.A. Leonov, N.V. Kuznetsov, E.P. Solovyeva
TL;DR
This paper develops a mathematical model of the Sayano-Shushenskaya hydropower plant to analyze stability and oscillations, providing insights into the causes of the 2009 accident and validating results with historical test data.
Contribution
It introduces a detailed dynamical model of the hydropower unit based on actual plant parameters, highlighting unstable oscillations linked to operational zones.
Findings
Identified oscillations in non-recommended zones.
Model results align with 1988 full-scale test data.
Provided insights into stability issues leading to accidents.
Abstract
This work is devoted to the construction and study 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. Parameters of the Sayano-Shushenskaya hydropower plant were used for modeling the system. Oscillations in zones, which were not recommended for operation, were found. The obtained results are consistent with the full-scale test results carried out for hydropower units of the Sayano-Shushenskaya hydropower plant in 1988.
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Taxonomy
TopicsPower System Optimization and Stability · Stability and Controllability of Differential Equations · Numerical methods for differential equations