Frequency Control in a Hydroelectric Power Plant with Adaptive Neuro-Fuzzy Inference System-Based Modern Controllers

Öz

In power systems, the constant frequency, constant voltage, and the power output are desired and determine the quality of the generated electrical energy. Therefore, frequency control is crucial in power systems. The parameters of conventional controllers used in power generation plants are determined according to the system's characteristics at the stage of installation, they cannot adapt to the changing system dynamics as the lifespan of power plants increases. Thus, studies on the automatic adaptation of controller parameters to the continuously changing system dynamics are needed. In this study, conventional PI and PID controllers applied to the power system for frequency control of a hydroelectric power plant were examined comparatively with Fuzzy Gain Scheduled PI (FGPI) controller and Adaptive Neuro-Fuzzy Inference System-based PI (ANFIS-PI) and PID (ANFIS-PID) controllers in the simulation environment. The obtained results demonstrated that Adaptive Neuro-Fuzzy Inference System-based controllers were quite successful compared to the others.

Anahtar Kelimeler

• Power Systems,
• Frequency Control,
• Hydroelectric Power Plant,
• FGPI,
• ANFIS-PI,
• ANFIS-PID,

Uyarlanabilir Nöro-Bulanık Çıkarım Sistemi Tabanlı Modern Kontrolörlerle Bir Hidroelektrik Santralinde Frekans Kontrolü

Öz

Güç sistemlerinde, tüketicinin beklentisi olan sabit frekans, sabit gerilim ve istenen değerdeki güç üretilen elektrik enerjisinin kalitesini belirler. Bu sebeple güç sistemlerinde frekans kontrolü oldukça önemlidir. Enerji üretim santrallerinde kullanılan klasik kontrolörlerin parametreleri kurulum aşamasındaki sistem özelliklerine göre belirlendiği için santral ömürleri arttıkça değişen sistem dinamiklerine uyum gösterememektedir. Bu istenmeyen durumu önleyebilmek için kontrolör parametrelerinin sürekli değişen sistem dinamiklerine kendiliğinden uyum gösterebilecek şekilde çalışmalara ihtiyaç duyulmaktadır. Bu noktadan hareketle enerji santrallerinde kullanılan kontrolörlerin ve parametrelerinin belirlenmesi konusunda yapılan bu çalışmada, bir hidroelektrik santralinin frekans kontrolü için güç sistemine uygulanan klasik PI ile PID kontrolörler, Fuzzy Gain Scheduled PI (FGPI) kontrolör ve Adaptive Neuro-Fuzzy Inference System tabanlı PI (ANFIS-PI) ile PID (ANFIS-PID) kontrolörler simülasyon ortamında karşılaştırmalı olarak incelenmiştir. Elde edilen sonuçlar Adaptive Neuro-Fuzzy Inference System tabanlı kontrolörlerin diğerlerine göre oldukça başarılı olduğunu göstermiştir.

Anahtar Kelimeler

• güç sistemleri
• frekans kontrolü
• hidroelektrik güç santrali
• FGPI
• ANFIS-PI
• ANFIS-PID

Kaynakça

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