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Title:Napovedovanje hidravličnih prehodnih pojavov v Francisovi turbini : diplomsko delo
Authors:ID Jurhar, Jernej (Author)
ID Biluš, Ignacijo (Mentor) More about this mentor... New window
ID Škerlavaj, Aljaž (Comentor)
Files:.pdf UN_Jurhar_Jernej_2019.pdf (2,69 MB)
MD5: 8B9DC1578F0D21C2DB0E348D7A985369
PID: 20.500.12556/dkum/c869d75c-4f11-4fb8-9c59-618ff025bac5
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FS - Faculty of Mechanical Engineering
Abstract:Hidravlični prehodni pojav je vsaka sprememba stacionarnega stanja v hidravličnem pretočnem sistemu. V hidroelektrarnah so vzrok hidravličnih prehodnih pojavov obratovalni manevri turbine. S simulacijskim programom SIMSEN smo simulirali trenutno razbremenitev in hitro zaustavitev Francisove turbine za dva primera hidroelektrarn. Rezultati so pokazali, da pride v pretočnem sistemu hidroelektrarne do vodnega udara. Vodni udar je hidravlični prehodni pojav, pri katerem pride do tlačnih pulzacij, ki lahko ogrozijo varnost celotnega sistema. V hidroelektrarnah vodni udar blažimo s podaljševanjem časa zapiranja vodilnika in z ventilom za vzporedni izpust vode. Rezultate programa SIMSEN smo primerjali z rezultati programa WCF. Rezultati obeh programov se dovolj dobro ujemajo, da lahko zaključimo, da je program SIMSEN primeren za napovedovanje hidravličnih prehodnih pojavov v hidroelektrarnah. 
Keywords:prehodni pojavi, vodni udar, Francisova turbina, hidroelektrarna, simulacijski program
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[J. Jurhar]
Year of publishing:2019
Number of pages:XII, 52 f.
PID:20.500.12556/DKUM-74714 New window
UDC:532.595:621.224.24(043.2)
COBISS.SI-ID:22972694 New window
NUK URN:URN:SI:UM:DK:FNHXUW5F
Publication date in DKUM:17.09.2019
Views:1652
Downloads:133
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FS
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:04.09.2019

Secondary language

Language:English
Title:Prediction of hydraulic transient phenomena in Francis turbine
Abstract:A hydraulic transient phenomenon is every change of stationary state in a hydraulic flow system. The causes for hydraulic transient phenomena in hydroelectric power plants are operating manoeuvres of the turbine. Using the simulation software SIMSEN we simulated the load rejection and rapid shutdown of the Francis turbine in two cases of hydroelectric power plants. The results have shown that in the flow system of the hydroelectric power plant a water hammer occurs. The water hammer is a hydraulic transient phenomenon where pressure pulsations take place, which can endanger the safety of the whole system. In hydroelectric power plants the water hammer is alleviated by the prolongation of the guide vane closing time and with the pressure relief valve. We compared results of the software SIMSEN with the results of the software WCF. The results of both software match good enough, so it can be concluded that the software SIMSEN is suitable for predicting hydraulic transient phenomena in hydroelectric power plants.
Keywords:transient phenomena, water hammer, Francis turbine, hydroelectric power plant, simulation software


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