Title page for ETD etd-07262010-171512


Document Type Master's Dissertation
Author Visser, Jacobus
Email jaco.visser@murrob.com
URN etd-07262010-171512
Document Title A method of voltage tracking for power system applications
Degree MSc
Department Electrical, Electronic and Computer Engineering
Supervisor
Advisor Name Title
Dr R Naidoo Committee Chair
Keywords
  • Diode bridge rectifier
  • parameter setting optimization
  • parameter verstelling optimering
  • nie-liniÍre filter
  • amplituderaming
  • Diodebrug gelykrigter
  • synkrone-generator-beheer
  • non-linear filter
  • spanningverlagings
  • simmertriese komponente
  • voltage dips
  • symmetrical components
  • amplitude tracking
  • synchronous generator control
Date 2010-09-02
Availability unrestricted
Abstract

An algorithm that is capable of estimating the parameters of non-stationary sinusoids in real-time lends application to various branches of engineering. Non-stationary sinusoids are sinusoidal signals with time-varying parameters.

In this dissertation, a nonlinear filter is applied to power system applications to test its performance. The filter has a structure which renders it fully adaptive to tracking time variations in the parameters of the targeted sinusoid, including its phase and frequency. Mathematical properties of the differential equations which govern the proposed filter are presented. The performance of the proposed filter in the field of power systems is demonstrated with the aid of computer simulations and practical experimentations.

The filter is applied to synchronous generator excitation control, voltage dip mitigation as well as the real-time estimation of symmetrical components. The parameter settings of the filter are tested and optimized for each of the applications.

This dissertation demonstrates the simulation and experimental results of the filter when applied to the various power system applications.

AFRIKAANS : 'n Filter wat bevoeglik is met die beraming van die parameters van beweeglike sinusoÔdale in ware-tyd, kan bruikbaar aangewend word in verskeie takke van ingenieurswese. Beweeglike sinuskrommes is sinusoÔdale seine met tyd-wisselende parameters.

In hierdie verhandeling word `n nie-liniÍre filter aangewend in verskeie kragstelseltoepassings om die werksverrigting van die filter te toets. Die filter het 'n struktuur wat dit toelaat om wisselende tydvariasies in die parameters van die teikensinusoÔdaal op te spoor, insluitende die fase en frekwensie. Wiskundige eienskappe van die differensiaalvergelykings wat die voorgestelde filter beheer is ondersoek. Die werksverrigting van die voorgestelde filter in die veld van kragstelsels is gedemonstreer met die hulp van rekenaarsimulasies asook praktiese eksperimente.

Die filter is toegepas tot opgewekte, sinkrone eksitasie-beheer, spanningsverlaging versagting, asook die ware tyd estimasie van simmetriese komponente. Die parameter verstellings van die filter is getoets en geoptimeer vir elk van die toepassings.

Hierdie verhandeling demonstreer die simulering en eksperimentele resultate van die filter wat aangewend is vir verskeie kragstelseltoepassings.

Copyright © 2010, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria.

Please cite as follows:

Visser, J 2010, A method of voltage tracking for power system applications, MSc dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://upetd.up.ac.za/thesis/available/etd-07262010-171512/ >

C10/544/gm

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