Izbor i podešenje relejne zaštite u vjetroelektrani

master's thesis

• Title (english): Choice and setting of protection relays in wind power plant
• Author: Marko Išlić
• Mentor: Ante Marušić (mentor)
• Committee member: Ante Marušić (predsjednik povjerenstva)
• Committee member: Vladimir Mikuličić (član povjerenstva)
• Committee member: Juraj Havelka (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2014-07-01, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Uvod ovog rada opisuje gospodarsku situaciju koja dovodi do potrebe za što većom implementacijom vjetroelektrana u elektroenergetski sustav. Slijedi dio koji objašnjava pretvorbu energije vjetra koja se prvo pretvara u mehaničku energiju na vratilu te onda u sinkronom ili asinkoronom generatoru u električnu energiju.
Vjetroelektrane se djele ovisno o njihovoj snazi, mjestu građenja, položaju vratila, regulaciji snage te načinu priključka. Pravna regulativa propisuje uvjete pogona i priključka vjetroelektrana na hrvatski elektroenergetski sustav pri čemu se posebna pažnja posvećuje regulaciji snage te potrebnim sposobnostima vjetroelektrana da rade bez napona.
Zaštita vjetroelektrana se izvodi štićenjem vjetroagregata, njegove trafostanice, vlastite mreže koja povezuje vjetroagregate u vjetroelektranu te sučelja vjetroelektrane i prijenosne mreže tj. transformatora srednjeg na visoki napon.
Na kraju rada je provedena simulacija kvarova na prijenosnoj mreži te su prodiskutirani vrijednosti napona na sučelju u usporedbi s vrijednostima napona uzrokovanih unutarnjim kvarovima vjetroelektrane.

Abstract (english)

In the introduction of this paper, economic situation that led into a very big need of windpower plants is described. Next part of the paper explains a method of transforming windpower into mechanical energy on the shaft and from mechanical energy on the shaft, with synchronous or induction machine, into electrical energy. Windpower turbines are often divided depending on their nominal power, place of installation, shaft position, types of power control, types of windpower plant-grid interface etc. Legal regulations order drive conditions and types of allowed windpower plant-grid interfaces where the accent is placed on power regulation and a their fault ride through capabilities. Windpower plant protection is often constructed by seperately protecting windpower turbines, their transformers, their common intern grid and their grid interface. In the last part of the paper, simulation of short circuit conditions in the grid is done. Some conclusions are made about voltages on interface by comparison with voltage values that were present during short circuits in windpower plant facility.

• Keywords: vjetroelektrana; vjetroagregat; zaštita; propad napona; upravljanje
• Keywords (english): windpower turbine; power protection; voltage dips; power control
• Language: croatian
• URN:NBN: urn:nbn:hr:168:273253
• Study programme: Title: Electrical Engineering and Information Technology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka elektrotehnike i informacijske tehnologije (magistar/magistra inženjer/inženjerka elektrotehnike i informacijske tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2018-02-06 09:15:42