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Increasing the operating range and energy production in Francis turbines by an early detection of the overload instability

Author
Zhao, W.; Presas, A.; Egusquiza, M.; Valentin, D.; Egusquiza, E.; Valero, M.
Type of activity
Journal article
Journal
Measurement
Date of publication
2021-08
Volume
181
First page
109580/1
Last page
109580/11
DOI
10.1016/j.measurement.2021.109580
Repository
http://hdl.handle.net/2117/351034 Open in new window
URL
https://www.sciencedirect.com/science/article/pii/S0263224121005558 Open in new window
Abstract
With the increasing entrance of wind and solar power for the generation of electricity, more flexibility is demanded to hydropower plants. More flexibility means that hydro turbines have to increase the operating range between minimum and maximum power. In Francis turbines the maximum power is limited by the appearance of a strong hydraulic excitation called overload instability. When the turbine operates at loads higher than design, the cavitating vortex rope that is generated in the draft tube...
Citation
Zhao, W. [et al.]. Increasing the operating range and energy production in Francis turbines by an early detection of the overload instability. "Measurement", Agost 2021, vol. 181, p. 109580/1-109580/11.
Keywords
Data-driven method, Francis turbine, Overload instability, PCASOM
Group of research
CDIF - Center for Industrial Diagnostics
FLUIDS - Fluids Engineering

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