Usporedba otpora uzemljenja izračunatog analitički FEM programom za tipični uzemljivač korišten u elektranama

undergraduate thesis

• Title (english): Comparison of grounding resistance calculated analytically and using FEM model for typical power plant grounding system
• Author: Marko Kondić
• Mentor: Davor Grgić (mentor)
• Committee member: Davor Grgić (predsjednik povjerenstva)
• Committee member: Paulina Dučkić (član povjerenstva)
• Committee member: Štefica Vlahović (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2021-09-14, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

U završnom radu je definirana podjela uzemljenja po vrsti i načinu izvedbe. Svaki od tipova uzemljenja je objašnjen te prikazan pomoću slika. Definirane su glavne opasnosti kod zemljospoja, naponi koraka i dodira. Korištenjem programa ANSYS te izraza iz literature, izračunati su otpori uzemljenja za različite izvedbe uzemljivača. Grafički su prikazane raspodjele potencijala te ovisnost napona o udaljenosti od uzemljivača.

Abstract (english)

This thesis describes different grounding techniques. Each technique is described in detail using sketches of grounding methods. Both step voltage and contact voltage, the main dangers during an occurence of an earth fault, are defined. Using mathematical terms found in literature, ground resistance for various grounding types has been caluclated. Using ANSYS, the same ground resistances have also been calculated using computer software. The results have been plotted and explained accordingly.

• Keywords: uzemljivač; otpor uzemljenja; potencijalno polje; raspored potencijala; napon; specifični otpor tla
• Keywords (english): grounding; ground resistance; voltage; soil resistivity; potential difference
• Language: croatian
• URN:NBN: urn:nbn:hr:168:769817
• Study programme: Title: Electrical Engineering and Information Technology; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike i informacijske tehnologije (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike i informacijske tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2023-01-14 09:07:59