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doctoral thesis
PROCJENA STANJA TEŠKIH ELEKTROMOTORNIH POGONA S VISOKONAPONSKIM ASINKRONIM KAVEZNIM MOTORIMA PRIMJENOM NUMERIČKIH RELEJA
2022. urn:nbn:hr:200:807061
Jahić, Adamir
Josip Juraj Strossmayer University of Osijek
Faculty of Electrical Engineering, Computer Science and Information Technology Osijek
Department of Power Engineering
Electromagnetic Compatibility Laboratory

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Jahić, A. (2022). PROCJENA STANJA TEŠKIH ELEKTROMOTORNIH POGONA S VISOKONAPONSKIM ASINKRONIM KAVEZNIM MOTORIMA PRIMJENOM NUMERIČKIH RELEJA (Doctoral thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek. Retrieved from https://urn.nsk.hr/urn:nbn:hr:200:807061

Jahić, Adamir. "PROCJENA STANJA TEŠKIH ELEKTROMOTORNIH POGONA S VISOKONAPONSKIM ASINKRONIM KAVEZNIM MOTORIMA PRIMJENOM NUMERIČKIH RELEJA." Doctoral thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, 2022. https://urn.nsk.hr/urn:nbn:hr:200:807061

Jahić, Adamir. "PROCJENA STANJA TEŠKIH ELEKTROMOTORNIH POGONA S VISOKONAPONSKIM ASINKRONIM KAVEZNIM MOTORIMA PRIMJENOM NUMERIČKIH RELEJA." Doctoral thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, 2022. https://urn.nsk.hr/urn:nbn:hr:200:807061

Jahić, A. (2022). 'PROCJENA STANJA TEŠKIH ELEKTROMOTORNIH POGONA S VISOKONAPONSKIM ASINKRONIM KAVEZNIM MOTORIMA PRIMJENOM NUMERIČKIH RELEJA', Doctoral thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, accessed 03 April 2025, https://urn.nsk.hr/urn:nbn:hr:200:807061

Jahić A. PROCJENA STANJA TEŠKIH ELEKTROMOTORNIH POGONA S VISOKONAPONSKIM ASINKRONIM KAVEZNIM MOTORIMA PRIMJENOM NUMERIČKIH RELEJA [Doctoral thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek; 2022 [cited 2025 April 03] Available at: https://urn.nsk.hr/urn:nbn:hr:200:807061

A. Jahić, "PROCJENA STANJA TEŠKIH ELEKTROMOTORNIH POGONA S VISOKONAPONSKIM ASINKRONIM KAVEZNIM MOTORIMA PRIMJENOM NUMERIČKIH RELEJA", Doctoral thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, Osijek, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:200:807061

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TitlePROCJENA STANJA TEŠKIH ELEKTROMOTORNIH POGONA S VISOKONAPONSKIM ASINKRONIM KAVEZNIM MOTORIMA PRIMJENOM NUMERIČKIH RELEJA
Title (english)ASSESSMENT OF THE CONDITION OF HEAVY ELECTRIC MOTOR DRIVES WITH HIGH-VOLTAGE ASYNCHRONOUS CAGE MOTORS USING NUMERICAL RELAYS
AuthorAdamir Jahić
MentorŽeljko Hederić (mentor)
Committee memberMarinko Barukčić (predsjednik povjerenstva)
GranterJosip Juraj Strossmayer University of Osijek
Faculty of Electrical Engineering, Computer Science and Information Technology Osijek
(Department of Power Engineering)
(Electromagnetic Compatibility Laboratory)
Osijek
Defense date and country2022-06-27, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Power Engineering
Universal decimal classification
(UDC)		621.3 - Electrical engineering
Abstract
Suvremeni trendovi u dizajniranju električnih strojeva usmjereni su na povećanje efikasnosti rada, odnosno na usavršavanje tehnologije proizvodnje električnih strojeva. To posljedično dovodi do smanjenja volumena i smanjenja toplinskih vremenski konstanti električnog stroja. Kako se električnim strojevima u suvremenim industrijskim pogonima nameće i dinamičniji režimi rada to dovodi do pojave bržeg zagrijavanja motora pri preopterećenju što je posebno izraženo kod teških elektromotornih... More pogona (EMP). Visokonaponski (VN) asinkroni kavezni motori (AKM) dimenzioniraju se za točno određeni teret velike snage te sa vrlo malim dozvoljenim preopterećenjem za primjenu u teškim EMP. Postoji veliki broj različitih faktora koji utiču na rad VN AKM, a odstupanje svakog od njih može uzrokovati njegovo oštećenje. Razvijeni su razni oblici zaštita motora u suvremenim industrijskim pogonima sa ciljem sprečavanja nastanka kvara ili smanjenja materijalne štete procesa proizvodnje. Štete zaustavljanja procesa proizvodnje pogonjeni sa VN AKM u pravilu su višestruko veće od štete uništenja motora uslijed kvara, pa se nameću zahtjevi procjene stanja i produženja rada motora u stanju kvara dok se ne osigura zamjenski pogoni. Najčešće korištene zaštite u praksi su korištenjem numeričkih releja s obzirom na jednostavniju funkcionalnost, nižu cijenu i robusniju izradu. U ovoj disertaciji prezentirano je korištenje numeričkih releja kao već postojećeg kontrolnog uređaja zaštite VN AKM kojemu možemo aktivirati i dodatnu prediktivnu zaštitnu ulogu u cilju osiguravanja uvjeta za procjenu stanja teških elektromotornih pogona sa VN AKM. Time se postiže povećanje pouzdanosti rada postrojenja uz zanemarivo ulaganje u postojeću infrastrukturu upravljanja i zaštite. Prezentirane su teorijske postavke dinamičkih režima rada teških EMP sa VN AKM, utjecaji napojne mreže, kao i ekspertna znanja dobivena istraživanjima kvarova te prijelaznih režima rada. Dat je prikaz postojećih dijagnostičkih metoda za lociranje kvarova sa posebnim osvrtom na on-line metode, te primjene zaštitnih numeričkih releja u procjeni stanja teških EMP pogonjenih sa VN AKM. Less
Abstract (english)
Modern trends in the design of electrical machines aim to increase efficiency, i.e. to improve the technology of electrical machine production. This in turn leads to a reduction in the volume and a reduction in the thermal time constants of the electrical machine. As the electrical machines in modern industrial plants are operated more and more dynamically, this leads to faster overheating of the motor in the event of an overload, which is particularly pronounced in heavy electric... More motor drives (EMD). High voltage (HV) Squirrel Cage Induction Motors (SCIM) are designed for particularly high loads and have very low permissible overloads for use in heavy duty applications. There are a number of different factors that affect the operation of HV SCIM and a deviation from any of these factors can result in damage to the motor. In modern industrial plants, various forms of motor protection have been developed to prevent the occurrence of failures or to reduce the damage to the production process. The damage caused by stopping the production process driven by HV SCIM is usually many times more expensive than the damage caused by destroying the motor due to a failure. Therefore, it's necessary to assess the condition of the failed motor and extend its operation until replacement drives are available. The most common protective measures used in practise are the use of numerical relays due to their simpler operation, lower cost and more robust construction. The dissertation presents the use of numerical relays as an existing control device for HV SCIM protection, to which we can activate an additional predictive protection function to create conditions for state evaluation of heavy electric motor drives with HV SCIM. This increases the reliability of the system with negligible investment in the existing management and protection infrastructure. Theoretical settings of dynamic modes of heavy EMD driven by HV SCIM, influences of the power supply network and expert knowledge from research on failures and transient operating modes are presented. Current diagnostic methods for fault location are presented, in particular on-line methods and the application of numerical protection relays in the condition assessment of heavy EMD driven by HV SCIM.. Less
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:200:807061
Promotion2022-06-27
Study programmeTitle: Postgraduate doctoral study programme; specializations in: branch Power Engineering and Communications, branch Informatics
Course: branch Power Engineering and Communications
Study programme type: university
Study level: postgraduate
Academic / professional title: doktor/doktorica znanosti, područje tehničkih znanosti, polje elektrotehnika (doktor/doktorica znanosti, područje tehničkih znanosti, polje elektrotehnika)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2022-08-01 07:05:38
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