Dynamic Simulation of Starting and Emergency Conditions of a Hydraulic Unit Based on a Francis Turbine

Andrey Achitaev, Pavel Ilyushin, Konstantin Suslov () and Sergey Kobyletski
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Andrey Achitaev: Department of Hydropower, Hydroelectric Power Plants, Electricity Systems and Electricity Networks, Siberian Federal University, 660041 Krasnoyarsk, Russia
Pavel Ilyushin: Energy Research Institute of the Russian Academy of Sciences, 117186 Moscow, Russia
Konstantin Suslov: Department of Hydropower and Renewable Energy, National Research University “Moscow Power Engineering Institute”, 111250 Moscow, Russia
Sergey Kobyletski: Information and Technological Systems Communication Service, RusHydro, “Sayano-Shushenskaya” HPP, 655600 Sayanogorsk, Russia

Energies, 2022, vol. 15, issue 21, 1-18

Abstract: The Francis hydro-turbine is a typical nonlinear system with coupled hydraulic, mechanical, and electrical subsystems. It is difficult to understand the reasons for its operational failures, since the main cause of failures is due to the complex interaction of the three subsystems. This paper presents an improved dynamic model of the Francis hydro-turbine. This study involves the development of a nonlinear dynamic model of a hydraulic unit, given start-up and emergency processes, and the consideration of the effect of water hammer during transients. To accomplish the objectives set, existing models used to model hydroelectric units are analyzed and a mathematical model is proposed, which takes into account the dynamics during abrupt changes in the conditions. Based on these mathematical models, a computer model was developed, and numerical simulation was carried out with an assessment of the results obtained. The mathematical model built was verified on an experimental model. As a result, a model of a hydraulic unit was produced, which factors in the main hydraulic processes in the hydro-turbine.

Keywords: hydro-turbine modeling; dynamic modeling; transient processes; hydropower; hydropower plants; mathematical modeling; water flow inertia (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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