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undergraduate thesis
SKLOPNI PRENAPONI U ELEKTROENERGETSKIM MREŽAMA
2019. urn:nbn:hr:200:189532
Vinković, Petar
Josip Juraj Strossmayer University of Osijek
Faculty of Electrical Engineering, Computer Science and Information Technology Osijek
Department of Power Engineering
Chair of Power Systems and Substations

Cite this document

Vinković, P. (2019). SKLOPNI PRENAPONI U ELEKTROENERGETSKIM MREŽAMA (Undergraduate thesis). Retrieved from https://urn.nsk.hr/urn:nbn:hr:200:189532

Vinković, Petar. "SKLOPNI PRENAPONI U ELEKTROENERGETSKIM MREŽAMA." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, 2019. https://urn.nsk.hr/urn:nbn:hr:200:189532

Vinković, Petar. "SKLOPNI PRENAPONI U ELEKTROENERGETSKIM MREŽAMA." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, 2019. https://urn.nsk.hr/urn:nbn:hr:200:189532

Vinković, P. (2019). 'SKLOPNI PRENAPONI U ELEKTROENERGETSKIM MREŽAMA', Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, accessed 31 January 2023, https://urn.nsk.hr/urn:nbn:hr:200:189532

Vinković P. SKLOPNI PRENAPONI U ELEKTROENERGETSKIM MREŽAMA [Undergraduate thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek; 2019 [cited 2023 January 31] Available at: https://urn.nsk.hr/urn:nbn:hr:200:189532

P. Vinković, "SKLOPNI PRENAPONI U ELEKTROENERGETSKIM MREŽAMA", Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, Osijek, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:200:189532

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Metadata
TitleSKLOPNI PRENAPONI U ELEKTROENERGETSKIM MREŽAMA
Title (english)SWITCHES IN ELECTRICITY NETWORKS
AuthorPetar Vinković
MentorGoran Knežević (mentor)
GranterJosip Juraj Strossmayer University of Osijek
Faculty of Electrical Engineering, Computer Science and Information Technology Osijek
(Department of Power Engineering)
(Chair of Power Systems and Substations)
Osijek
Defense date and country2019-09-26, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Power Engineering
Abstract
Prenaponi su naponi viših iznosa od onih za koje je mreža definirana. Osnovna podjela prenapona je na privremene i prijelazne prenapone. Prijelazni se dijele na ultra brze, brze te spore prenapone, a sporim prenaponima pripadaju i sklopni prenaponi, poznati i kao unutarnji prenaponi. Sklopni prenaponi su naponi koji se javljaju među kontaktima sklopnih aparata, a nastaju uslijed sklapanja. U drugom poglavlju definirana je klasifikacija prenapona prema obliku i trajanja, te je objašnjen način ispitivanja izolacije mreže za pojedine prenapone. Uz to, uveden je pojam koeficijent prenapona koji je važan radi usporedbe i lakše analize. S tumačenjem nastanka te načinom gašenja električnog luka započinje treće poglavlje. Električni luk je važan jer prethodi sklopni prenaponima. U istom poglavlju, slijede načini prekidanja struje kroz kontakte prekidača u ovisnosti o karakteru mreže, te definiranje povratnog napona i primjera nastanka. Četvrto poglavlje je posvećeno objašnjavanju povratnih napona, odnosno sklopnih prenapona za dane primjere te računanju iznosa koeficijenata prenapona, a tako donošenju zaključka o iznosu prenapona.
Abstract (english)
Overvoltages are voltages with higher amount combarable to overvoltages with defined grid. Basic classification of overvoltages is on temporary and transmission overvoltages. Transmission overvoltages are divided into ultra fast, fast and slow overvoltages, and part of the last one are switching overvoltages, also known as internal overvoltages. Switching overvoltages are voltages that occur between contacts of switchgear, and they appear during switching. In the second chapter is presented classification of overvoltages based on form and duration, and there is also explained the way that gear isolation is tested for individual overvoltages. Besides, there is also introduced the term overvoltage coefficient which is important for comparison and easier analysis. The third chapter starts with interpretation of making electric arc and explaining arc suppresion. Electric arc is important because he precedes switching overvoltages. In the same chapter, there are shown the ways of power outage through breaker's contacts in dependence of gear character, and there is also defined return voltage and given an example of return voltage incurrence. The fourth chapter explains return voltage, i.e. switching overvoltages for given examples where is presented calculation of overvoltage coeffient amount, hence conclusion about amount of overvoltage.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:200:189532
Study programmeTitle: Undergraduate University Study Programme
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2019-10-31 11:59:29