Utjecaj priključka velikih solarnih elektrana na pojavu zagušenja u prijenosnoj mreži

master's thesis

• Title (english): Impact of large solar power plants connection on the occurrence of congestion in the transmission network
• Author: Ilijana Franjičević
• Mentor: Ivica Pavić (mentor)
• Committee member: Ivica Pavić (predsjednik povjerenstva)
• Committee member: Goran Grdenić (član povjerenstva)
• Committee member: Mirna Gržanić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2022-07-15, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Ovaj rad obrađuje zagušenja u prijenosnoj mreži uzrokovana priključkom velikih solarnih elektrana. Prvo poglavlje bavi se solarnim elektranama i ovisno o načinu rada kako su fotonaponski sustavi spojeni na mreži. Nakon toga opisana je prijenosna mreža Republike Hrvatske i utjecaj priključka solarnih elektrana te tehnički uvjeti koje solarne elektrane moraju zadovoljavati kako bi bio omogućen priključak na prijenosnu mrežu. U nastavku su objašnjene analiza sigurnosti N-1 i proračuni za tokove snaga te je detaljno prikazana metoda i njene inačice koje se koriste u proračunu. Na području Kvarnera i Dalmacije nalazi se najveći broj solarnih elektrana pa je pomoću alata PSS/E napravljen proračun za navedena područje. Analizirale su se situacije u kojima bi moglo doći do zagušenja, a objašnjene su i metode upravljanja zagušenjem. Analiza se provodila najprije obrađujući početno stanje, a zatim modeliranjem mreže tj. prilagođavajući proizvodnju i potrošnju za više stanja prikazujući situacije u kojima dolazi do zagušenja. Također provodila se i analiza kada su neki od elemenata bili isključeni npr. jedan transformator te se promatralo kako će se mreža ponašati i hoće li doći do zagušenja ili ispada ostalih elemenata.

Abstract (english)

This paper deals with congestion in the transmission network caused by the connection of large solar power plants. The first chapter deals with solar power plants and depending on the mode of operation how photovoltaic systems are connected to the transmission network. After that are described the transmission network of the Republic of Croatia , the impact of the connection of solar power plants and the technical conditions that solar power plants must meet in order to be connected to the transmission network. The N-1 safety analysis and calculations for power flows are explained below, and the method and its variants used in the calculation are presented in detail. The largest number of solar power plants is located in the area of ​​Kvarner and Dalmatia, so a calculation was made for the mentioned area using the PSS / E tool. Situations in which congestion could occur were analyzed, and congestion management methods were explained. The analysis was performed first by processing the initial state, and then by modeling the network, ie by adjusting production and consumption for more states by showing situations in which congestion occurs. An analysis was also performed when some of the elements were switched off, eg. one transformer, and it was observed how the network would behave and whether there would be congestion or failure of other elements.

• Keywords: solarne elektrane; zagušenja; prijenosna mreža; PSS/E; Newton-Raphson metoda; tokovi snaga
• Keywords (english): solar power plants; congestion; transmission network; PSS/E; Newton-Raphson method; power flows
• Language: croatian
• URN:NBN: urn:nbn:hr:168:203639
• 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: 2023-01-13 14:54:25