Atmosferski prenaponi u prijenosnom elektroenergetskom sustavu

undergraduate thesis

• Title (english): Lightning overvoltages in power transmission grid
• Author: Lukrecija Prnjić
• Mentor: Božidar Filipović-Grčić (mentor)
• Committee member: Božidar Filipović-Grčić (predsjednik povjerenstva)
• Committee member: Nina Stipetić (član povjerenstva)
• Committee member: Anica Šešok (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2020-09-01, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Prenapon je svaki napon između faznog vodiča i zemlje ili između dva fazna vodiča, čija je vršna vrijednost veća od odgovarajuće vršne vrijednosti najvišeg napona opreme. Udar munje u dalekovod uzrokuje atmosferske prenapone zbog kojih dolazi do kvara opreme. Za zaštitu opreme koriste se odvodnici prenapona. Uvodi se i postupak koordinacije izolacije kako bi sustav izdržao sva naprezanja. U ovom radu su analizirani snimljeni prenaponi na energetskim transformatorima, a za snimanje prenapona se koristi sustav za nadziranje prijelaznih prenapona, TOMS.

Abstract (english)

Overvoltage is any voltage between one phase conductor and earth or between phase conductors having a peak value exceeding the corresponding peak of the highest voltage for equipment. Overvoltages caused by lightning can cause equipment failures. Surge arresters are used for protection of electrical equipment from lightning overvoltages. Insulation coordination is introduced so the system would withstand stresses. In this paper, recorded overvoltages on power transformers are analyzed. An on-line transient overvoltage monitoring system, TOMS, is used for measurement of overvoltages.

• Keywords: prenaponi; atmosferski prenaponi; koordinacija izolacije; odvodnici prenapona; sustav za nadziranje; energetski transformator
• Keywords (english): overvoltages; lightning overvoltages; insulation coordination; surge arresters; monitoring system; power transformer
• Language: croatian
• URN:NBN: urn:nbn:hr:168:015817
• 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 09:44:45