prikaz prve stranice dokumenta Analitičko modeliranje tranzijentne struje inducirane na vertikalnoj uzemljivačkoj elektrodi prilikom kratkog spoja generatora
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master's thesis
Analitičko modeliranje tranzijentne struje inducirane na vertikalnoj uzemljivačkoj elektrodi prilikom kratkog spoja generatora
2021. urn:nbn:hr:179:820580
Soldo, Ante
University of Split
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture
Department of Power Engineering

Cite this document

Soldo, A. (2021). Analitičko modeliranje tranzijentne struje inducirane na vertikalnoj uzemljivačkoj elektrodi prilikom kratkog spoja generatora (Master's thesis). Split: University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:179:820580

Soldo, Ante. "Analitičko modeliranje tranzijentne struje inducirane na vertikalnoj uzemljivačkoj elektrodi prilikom kratkog spoja generatora." Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, 2021. https://urn.nsk.hr/urn:nbn:hr:179:820580

Soldo, Ante. "Analitičko modeliranje tranzijentne struje inducirane na vertikalnoj uzemljivačkoj elektrodi prilikom kratkog spoja generatora." Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, 2021. https://urn.nsk.hr/urn:nbn:hr:179:820580

Soldo, A. (2021). 'Analitičko modeliranje tranzijentne struje inducirane na vertikalnoj uzemljivačkoj elektrodi prilikom kratkog spoja generatora', Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, accessed 26 November 2023, https://urn.nsk.hr/urn:nbn:hr:179:820580

Soldo A. Analitičko modeliranje tranzijentne struje inducirane na vertikalnoj uzemljivačkoj elektrodi prilikom kratkog spoja generatora [Master's thesis]. Split: University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture; 2021 [cited 2023 November 26] Available at: https://urn.nsk.hr/urn:nbn:hr:179:820580

A. Soldo, "Analitičko modeliranje tranzijentne struje inducirane na vertikalnoj uzemljivačkoj elektrodi prilikom kratkog spoja generatora", Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, Split, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:179:820580

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Metadata
TitleAnalitičko modeliranje tranzijentne struje inducirane na vertikalnoj uzemljivačkoj elektrodi prilikom kratkog spoja generatora
Title (english)Analytical modeling of transient current induced on the vertical grounding electrode during a generator short circuit
AuthorAnte Soldo
MentorSilvestar Šesnić (mentor)
GranterUniversity of Split
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture
(Department of Power Engineering)
Split
Defense date and country2021-09-21, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Power Engineering
Abstract
Generatori su uređaji koji služe za napajanje elektroenergetskih sustava. Kada se dogodi kratki spoj u mreži, generator daje struju kratkog spoja koja putuje od generatora, kroz mrežu do mjesta kratkog spoja, pa kroz zemlju do uzemljivačke elektrode koja služi za uzemljenje generatora. Tako se zatvara strujni krug i struja teče do prekida kratkog spoja. U radu su opisane vrste kratkih spojeva: tropolni (K3), dvopolni (K2), jednopolni (K1) i dvopolni kratki spoj s istovremenim spojem sa zemljom (K2Z). Kod analize kratkog spoja generatora uzemljenog preko elektrode, korišten je tropolni kratki spoj. Zatim su opisane pojave koje se događaju za vrijeme kratkog spoja i objašnjene su veličine potrebne za simulaciju kratkog spoja generatora uzemljenog preko uzemljivačke elektrode. U četvrtom poglavlju matematički je opisana vertikalna elektroda i izvedena je relacija koja opisuje struju kratkog spoja na elektrodi koja je korištena za uzemljenje generatora. Na kraju je izvršena simulacija kratkog spoja generatora koji je uzemljen preko uzemljivačke elektrode. Gledajući rezultate početnih trenutaka struje kratkog spoja uočavamo utjecaj duljine elektrode i vodljivosti medija u kojem je elektroda. Veća vodljivost medija i veća duljina elektrode ublažavaju strujne šiljke i brzinu porasta struje kod udarne struje kratkog spoja. Za kraj je napravljena usporedba između induciranih struja kada je generator uzemljen sa vertikalnom, odnosno horizontalnom elektrodom.
Abstract (english)
Generators are devices used to power systems. When a short circuit occurs in the network, the generator provides a short-circuit current that travels from the generator, through the network to the short-circuit location, and through the earth to the grounding electrode that serves to ground the generator. That way the circuit is closed and the current flows until a short circuit is interrupted. The thesis describes the types of short circuits: three-pole (K3), two-pole (K2), single-pole (K1) and two-pole short-circuits with the simultaneous ground connection (K2Z). In the shortcircuit analysis of the generator grounded over the electrode, a three-pole short-circuit was used. The phenomena occurring during a short circuit are then described and the parameters required to simulate a short circuit of the generator grounded over the ground electrode are explained. In the fourth chapter, the vertical electrode is mathematically described and a relation is derived that describes the short-circuit current exciting the electrode used to ground the generator. Finally, a short-circuit simulation of the generator grounded via a grounding electrode was performed. Observing the results for the initial moments of the short circuit current, we notice the influence of the electrode length and the conductivity of the medium in which the electrode is located. The higher conductivity of the medium and the greater electrode length mitigate the current spikes and the rate of increase of current at the short-circuit. Finally, a comparison was made between the induced currents when the generator was grounded with a vertical or horizontal electrode, respectively.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:179:820580
Study programmeTitle: Electrical Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka elektrotehnike (magistar/magistra inženjer/inženjerka elektrotehnike)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to authenticated users
Terms of useLicence In copyright icon
Created on2022-10-17 09:50:34