PI Kontrolörlü otomatik gerilim regülasyon sisteminin kararlılık analizi
Elektrik güç sistemlerinde güç kalitesine etki eden en önemli parametre sistem gerilimidir. Sistem geriliminin kararlılığı güç sistemi açısından çok kritik öneme sahiptir. Bu çalışma, otomatik gerilim regülasyon (OGR) sisteminde PI kazançlarının değerlerine bağlı olarak sistem kararlılığını analiz etmiştir. Bu amaçla, kararlı PI parametre uzayını elde etmek için grafik tabanlı olan kararlılık sınır eğrisi metodu önerilmiştir. OGR sisteminin karakteristik denkleminin köklerine göre kararlılık kapalı bölgesi hesaplanmıştır. Teorik olarak elde edilen bu bölge, Matlab/Simulink ortamında gerçekleştirilen zaman domain benzetimleri ile doğrulanmıştır.
Stability analysis of the automatic voltage regulation system with PI controller
The system voltage is one of the most important parameters, which determines the power quality. Thestability of the system voltage is critical for the power system. This paper investigates the stability analysisof the automatic voltage regulation system controlled by a PI controller related to the controller gains. Forthis purpose, a graphical-based technique called as the stability boundary locus method is proposed in thepaper to obtain the stable parameters space of PI controller gains. Stability of closed region computed onparameters space determines from roots of characteristic equation of automatic voltage regulation system.The time-domain simulations are performed in Matlab/Simulink environment to validate the theoreticalresults.
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