Investigation of oscillatory problems of hydraulic generating units equipped with francis turbines

 
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Journal part (EN)
Scientific article (EN)
1997 (EN)
Investigation of oscillatory problems of hydraulic generating units equipped with francis turbines (EN)
Konidaris, DN (EN)
Tegopoulos, JA (EN)
In the present paper a method is presented for the study of oscillatory problems of hydraulic generating units equipped with Francis turbines. The accurate equations of the turbine are implemented for the simulation, taking into account water hammer effect. Partial derivatives of turbine flow rate and torque with respect to head and gate opening are deduced from real measurements for the whole loading range. Speed governor dynamics are fully simulated, and the influence of torsional vibrations is studied. The vibration response of the unit to draft tube surges is investigated and the risk of excessive oscillations is evaluated. The approach was developed for diagnosis of excessive vibrations of Kastraki hydro power station in Greece. © 1997 IEEE. (EN)
journalArticle (EN)
Machine vibrations (EN)
Computer simulation (EN)
Engineering, Electrical & Electronic (EN)
Francis turbines (EN)
Draft tube surges (EN)
Hydraulic units (EN)
Governors (EN)
Energy & Fuels (EN)
Vibrations (EN)
Water hammer (EN)
Diagnosis (EN)
Surges (fluid) (EN)
Hydroelectric generators (EN)
National Technical University of Athens
Digital Library of National Technical University of Athens | Dspace@NTUA
Κεντρική Βιβλιοθήκη Ε.Μ.Π.
Ιδρυματικό Αποθετήριο
Δημοσιεύσεις μελών Δ.Ε.Π. σε περιοδικά
IEEE Power Engineering Review (EN)
English
1997 (EN)
http://hdl.handle.net/123456789/12327
10.1109/60.638969 (EN)
47 (EN)
0885-8969 (EN)
5 (EN)
17 (EN)
425 (EN)
ISI:A1997YH55800024 (EN)
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC (EN)



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