prikaz prve stranice dokumenta Utjecaj rasipnog magnetskog polja u čeonom prostoru hidrogeneratora na ograničenje rada u poduzbuđenom stanju
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doctoral thesis
Utjecaj rasipnog magnetskog polja u čeonom prostoru hidrogeneratora na ograničenje rada u poduzbuđenom stanju
Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing, 2008. urn:nbn:hr:168:433334
Pavlica, Milutin
University of Zagreb
Faculty of Electrical Engineering and Computing
Department of Electric Machines, Drives and Automation

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Pavlica, M. (2008). Utjecaj rasipnog magnetskog polja u čeonom prostoru hidrogeneratora na ograničenje rada u poduzbuđenom stanju (Doctoral thesis). Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing. Retrieved from https://urn.nsk.hr/urn:nbn:hr:168:433334

Pavlica, Milutin. "Utjecaj rasipnog magnetskog polja u čeonom prostoru hidrogeneratora na ograničenje rada u poduzbuđenom stanju." Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2008. https://urn.nsk.hr/urn:nbn:hr:168:433334

Pavlica, Milutin. "Utjecaj rasipnog magnetskog polja u čeonom prostoru hidrogeneratora na ograničenje rada u poduzbuđenom stanju." Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2008. https://urn.nsk.hr/urn:nbn:hr:168:433334

Pavlica, M. (2008). 'Utjecaj rasipnog magnetskog polja u čeonom prostoru hidrogeneratora na ograničenje rada u poduzbuđenom stanju', Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 30 December 2024, https://urn.nsk.hr/urn:nbn:hr:168:433334

Pavlica M. Utjecaj rasipnog magnetskog polja u čeonom prostoru hidrogeneratora na ograničenje rada u poduzbuđenom stanju [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2008 [cited 2024 December 30] Available at: https://urn.nsk.hr/urn:nbn:hr:168:433334

M. Pavlica, "Utjecaj rasipnog magnetskog polja u čeonom prostoru hidrogeneratora na ograničenje rada u poduzbuđenom stanju", Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, 2008. Available at: https://urn.nsk.hr/urn:nbn:hr:168:433334

Metadata
TitleUtjecaj rasipnog magnetskog polja u čeonom prostoru hidrogeneratora na ograničenje rada u poduzbuđenom stanju
Title (english)Influence of end leakage flux on hydrogenerator’s underexcited operation ability
AuthorMilutin Pavlica
MentorZlatko Maljković (mentor)
Committee memberIvan Gašparac (član povjerenstva)
Committee memberZlatko Maljković (član povjerenstva)
Committee memberMilenko Stegić (član povjerenstva)
Committee memberSead Berberović (član povjerenstva)
Committee memberAnte Marušić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Electrical Engineering and Computing
(Department of Electric Machines, Drives and Automation)
Zagreb
Defense date and country2008-10-23, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Electromechanical Engineering
Universal decimal classification
(UDC)		621.3 - Electrical engineering
Abstract
Granica dozvoljenog rada poduzbuđenog sinkronog generatora definirana je granicom stabilnosti ili granicom dozvoljenog zagrijavanja krajnjih limova statorskog paketa. Povećano lokalno zagrijavanje čeonih dijelova hidrogeneratora u literaturi je zapostavljeno spram istog problema kod turbogeneratora, iako praksa ukazuje da ta pojava može izazvati probleme kod oba tipa strojeva. Korištenjem dostupnih analitičkih i numeričkih alata, te rezultata mjerenja provedenih u laboratoriju i u elektrani, odabrani su primjereni postupci analize stanja i određivanja karakterističnih veličina generatora u poduzbuđenom radu. Na temelju provedenih istraživanja definirani su postupci za određivanje aksijalne komponente magnetske indukcije u čeonom prostoru hidrogeneratora. Određena je međuovisnost veličine aksijalne komponente indukcije u čeonom prostoru i njome uzrokovanog lokalnog zagrijavanja, sa svrhom utvrđivanja utjecaja i zakonitosti toplinske i magnetske sprege. Predložena je metodologija za procjenu zagrijanja krajnjih limova statorskog paketa na temelju mjerenja. U nju su uključene: pripreme za mjerenja, ugradnja potrebnih mjernih senzora (tip, pozicija, broj senzora), odabir radnih točaka za koje je potrebno provesti mjerenje karakterističnih veličina stroja, te postupak procjene zagrijanja čeonih dijelova za sva ostala poduzbuđena radna stanja generatora. Predložena metodologija primijenjena je na 35 MVA generatoru u hrvatskom EES-u.
Abstract (english)
Underexcited hydrogenerator's operational ability limit is defined by stability limit or by end region stator laminations’ thermal limit. Localized increase of hydrogenerator's end region parts has been neglected in literature, compared to the same problem in case of turbine generators, regardless of evidence that both types of machines can be affected by this thermal problem. Optimal procedures for analysis and determination of underexcited hydrogenerator's characteristic parameters have been selected based on results of computations performed using classical and numerical tools and results of measurements. Procedures for determination of axial magnetic flux density component in the end region of hydrogenerator are defined based on this research. In order to ascertain the effects and principles of correlation between thermal and magnetic phenomena in the end region of the hydrogenerator, the effect of axial magnetic flux density component on additional thermal stress it causes has been determined. Methodology for determination of temperature rise of stator end laminations based on measurements has been proposed. It encompasses the preparations for measurements, installation of additional sensors (type, position, number), choice of load conditions for which the measurement of characteristic parameters of generator is carried out, as well as the procedure for estimation of temperature increase in end region parts for all other load conditions. Proposed methodology is implemented in case of 35 MVA hydrogenerator in Croatian power system.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:168:433334
Study programmeTitle: Doctoral study programme "Electrical Engineering and Computing"
Study programme type: university
Study level: postgraduate
Academic / professional title: doktor/doktorica znanosti, po-dručje tehničkih znanosti (doktor/doktorica znanosti, po-dručje tehničkih znanosti)
Type of resourceText
File originBorn digital
Access conditionsClosed access
Terms of useLicence In copyright icon
Created on2020-06-01 12:52:35