Regulator uzbude sinkronog generatora zasnovan na teoriji Ljapunova

doctoral thesis

• Title (english): Synchronous generator excitation controller based on Lyapunov theory
• Author: Igor Erceg
• Mentor: Zlatko Maljković (mentor)
• Committee member: Sejid Tešnjak (predsjednik povjerenstva)
• Committee member: Zlatko Maljković (član povjerenstva)
• Committee member: Miroslav Slamić (član povjerenstva)
• Committee member: Zoran Vukić (član povjerenstva)
• Committee member: Vesna Županović (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; (Department of Electric Machines, Drives and Automation); Zagreb
• Defense date and country: 2010-11-25, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering; Electromechanical Engineering
• Universal decimal classification (UDC): 621.3 - Electrical engineering

Abstract

Ova doktorska disertacija pridružuje se intenzivnim istraživanjima dinamike i stabilnosti EES-a u različitim režimima rada i stanja sustava. Razvijen je novi regulator uzbude sinkronog generatora, a zasnovan je na teoriji Ljapunova. Upravljački zakon novog regulatora uzbude dobiven je upotrebom upravljačke Ljapunovljeve funkcije. Za regulator uzbude zasnovan na teoriji Ljapunova kao i za klasične regulatore uzbude PI tipa s i bez stabilizatora elektromehaničkih njihanja razvijeni su simulacijski modeli. Simulacijski modeli su upotrijebljeni za određivanje parametara regulatora u klasičnoj strukturi uzbude s i bez stabilizatora elektromehaničkih njihanja, kao i za određivanje parametara u strukturi uzbude temeljene na teoriji Ljapunova. Algoritmi i strukture klasičnih sustava uzbude, te algoritam i struktura uzbude dobiven upotrebom Ljapunovljeve direktne metode stabilnosti implementirani su u digitalni sustav cRIO-9014. Na laboratorijskoj maketi (generator 83kVA) snimljeni su odzivi djelovanja klasičnog sustava uzbude s i bez stabilizatora elektromehaničkih njihanja i sustava uzbude dobivenog po teoriji Ljapunova. Snimljeni su odzivi za slučaj skokovite promjene postavne veličine napona generatora, skokovite promjene mehaničke snage, isklop i uklop jednog od dva prijenosna voda, kao i za slučajeve tropolnog i dvopolnog kratkog spoja na jednom prijenosnom vodu. Usporedbom odziva i numeričkih kriterija pokazatelja kvalitete regulacije snage navedenih sustava uzbude, sustav zasnovan na teoriji Ljapunova ima bolje pokazatelje kvalitete regulacije. Ima šire područje stabilnosti rada generatora. Robusniji je u odnosu na klasične sustave uzbude, odnosno praktički ne ovisi o radnoj točki generatora i stanju sustava.

Abstract (english)

This doctoral thesis joins to intensive studies of the power system dynamics and stability in different modes of operation and system states. A new synchronous generator excitation controller based on Lyapunov theory was developed. Control law of the new excitation controller was obtained using a control Lyapunov function. Simulation models for the excitation controller based on Lyapunov theory and the classic PI excitation controller, with and without a power system stabilizer, were developed. Simulation models were used to determine the controller parameters of the excitation control in classic structure, with and without a power system stabilizer, as well as to determine the parameters of the excitation controller based on Lyapunov theory. Algorithms and structures of classic excitation systems, and algorithm and structure of excitation system based on Lyapunov theory were implemented on a digital system cRIO-9014. On the laboratory model (generator 83kVA) experimental responses of the classic excitation system, with and without a power system stabilizer, and excitation system based on Lyapunov theory were recorded. Experimental responses were recorded for step changes of generator reference voltage, step changes of mechanical power, opening and closing a circuit breaker on one of two transmission lines, as well as for three and two phase short circuit faults on one of two transmission lines. Comparing the experimental responses and quality control numerical criteria of the specified excitation systems, the system based on Lyapunov theory has better performance. It widens the generator stability area and is more robust compared to conventional excitation systems. Virtually does not depend on the generator operating point and the power systems state.

• Keywords: regulator uzbude zasnovan na teoriji Ljapunova; sustav uzbude sinkroni generator; stabilizator elektromehaničkih njihanja
• Keywords (english): excitation controller based on Lyapunov theory; synchronous generator excitation system; power system stabilizer
• Language: croatian
• URN:NBN: urn:nbn:hr:168:761544
• Project: Number: 036-0361616-1617; Title: Revitalizacija i pogon hidrogeneratora; Leader: Zlatko Maljković; Jurisdiction: Croatia; Funder: MZOS; Funding stream: ZP
• Project: Number: 036-0361621-1626; Title: Upravljanje sinkronim agregatom s obzirom na zahtjeve elektroenergetskog sustava; Leader: Gorislav Erceg; Jurisdiction: Croatia; Funder: MZOS; Funding stream: ZP
• Study programme: Title: Doctoral study programme "Electrical Engineering and Computing"; Study programme type: university; Study level: postgraduate; Academic / professional title: doktor/doktorica znanosti, po-dručje tehničkih znanosti (doktor/doktorica znanosti, po-dručje tehničkih znanosti)
• Catalog URL: http://lib.fer.hr/cgi-bin/koha/opac-detail.pl?biblionumber=34382
• Type of resource: Text
• Extent: 163 str ; 30 cm
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2019-06-07 08:41:09