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

Konidaris, DN; Tegopoulos, JA

dc.contributor.author	Konidaris, DN	en
dc.contributor.author	Tegopoulos, JA	en
dc.date.accessioned	2014-03-01T01:13:05Z
dc.date.available	2014-03-01T01:13:05Z
dc.date.issued	1997	en
dc.identifier.issn	0885-8969	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12327
dc.subject	Diagnosis	en
dc.subject	Draft tube surges	en
dc.subject	Francis turbines	en
dc.subject	Hydraulic units	en
dc.subject	Vibrations	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.other	Computer simulation	en
dc.subject.other	Francis turbines	en
dc.subject.other	Governors	en
dc.subject.other	Machine vibrations	en
dc.subject.other	Surges (fluid)	en
dc.subject.other	Water hammer	en
dc.subject.other	Draft tube surges	en
dc.subject.other	Hydroelectric generators	en
dc.title	Investigation of oscillatory problems of hydraulic generating units equipped with francis turbines	en
heal.type	journalArticle	en
heal.identifier.primary	10.1109/60.638969	en
heal.identifier.secondary	http://dx.doi.org/10.1109/60.638969	en
heal.language	English	en
heal.publicationDate	1997	en
heal.abstract	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
heal.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC	en
heal.journalName	IEEE Power Engineering Review	en
dc.identifier.doi	10.1109/60.638969	en
dc.identifier.isi	ISI:A1997YH55800024	en
dc.identifier.volume	17	en
dc.identifier.issue	5	en
dc.identifier.spage	47	en
dc.identifier.epage	425	en