THE VOLTAGE CONTROL IN AN ENERGY TRANSMISSION SYSTEM BY STATCOM

Year 2010, Issue: 021, 77 - 90, 15.04.2010

M.mustafa Ertay , Zafer Aydoğmuş

Abstract

Voltage stability is very important in power systems.
It is known that reactive power flows are very efficient  on the system voltage and stability. STATCOM
is one of the converter based FACTS devices used for reactive power compensation.
In this study, at the distribution bus of an energy transmission system, in
spite of load variations, control of the bus voltage have been done with
STATCOM. Firstly STATCOM operation is investigated and then the equations
related with STATCOM and energy transmission system is given.  The simulation of this energy transmission system
which the STATCOM installed at distribution bus is realized in the
MATLAB/Simulink environment. In the simulation results; It has been seen that
STATCOM  hold the bus voltage at desired
values,  inspite of load variations reactive
power compensation is provided very fast and voltage stability of the system is
improved.

Keywords

Voltage stability, FACTS, STATCOM, Reactive Power Compensation

STATCOM İLE BİR ENERJİ İLETİM SİSTEMİNDE GERİLİM KONTROLÜ

Abstract

Güç sistemlerinde gerilim kararlılığı çok önemlidir. Reaktif
güç akışlarının sistem gerilimi ve kararlılığı üzerinde çok etkili olduğu
bilinmektedir. STATCOM reaktif güç kompanzasyonu için kullanılan konverter
tabanlı FACTS (Esnek Alternatif Akım İletim Sistemleri) cihazlarından biridir. Bu
çalışmada bir enerji iletim sistemindeki dağıtım barasında, yük değişimlerine
karşın STATCOM ile bara geriliminin kontrolü yapılmıştır. Öncelikle STATCOM
çalışma prensibi incelenmiş, daha sonra STATCOM ve enerji iletim sistemi ile
ilgili denklemler verilmiştir. Dağıtım
barasında STATCOM kurulu olan bu enerji iletim sisteminin benzetimi
MATLAB/Simulink ortamında gerçekleştirilmiştir. Benzetim
sonuçlarında; STATCOM’un bara gerilimini istenen değerlerde
tuttuğu, yük değişimlerine karşın hızlı bir şekilde reaktif güç kompanzasyonu
sağladığı ve sistemin gerilim kararlılığını iyileştirdiği
gözlenmiştir.

Keywords

Gerilim Kararlılığı, FACTS, STATCOM, Reaktif Güç Kompanzasyonu

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