Secondary Frequency Regulation Using Exponential PI Controller for a Power System Comprising of Thermal Power Plant and PV Solar Energy System

Year 2024, Volume: 6 Issue: 1, 133 - 142, 30.04.2024

Emre Çelik

https://doi.org/10.46387/bjesr.1456068

Cited By: 1

Abstract

Imbalance between power generation and load demand causes unwanted undulations in frequency and tie-line power responses. These undulations closely affect the reliability/security of the power system, quality of the energy generated and the end user. In accomplishing generation suitable for consumption, secondary frequency regulation (SFR) is an inevitable control technique. In this brief, an exponential PI (EXP-PI) controller is proposed to enhance the performance of SFR in an interconnected power system. Snake optimizer (SO), one of the computational intelligence techniques, is benefitted for adjusting the controller parameters optimally. This way, without the requirement of an expert knowledge, controller parameters are searched optimally by minimizing the value of integral of time-multiplied absolute error (ITAE). To confirm the contribution of SO tuned EXP-PI controller, comparisons with the works in literature are established. It is deduced from the obtained results that the system performance with our proposal has enhanced in terms of oscillation, settling time, maximum overshoot/undershoot and ITAE value of the frequency and tie-line power responses.

Keywords

Secondary Frequency Regulation, Exponential PI Controller, Thermal Power Plant, PV Solar Energy System, Snake Optimizer, Optimization

Termik Güç Santrali ve Fotovoltaik Güneş Enerji Sisteminden Oluşan Güç Sisteminde Üstel PI Denetleyici ile Sekonder Frekans Regülasyonu

Abstract

Güç üretimi ve yük talebi arasında yaşanan bir uyumsuzluk frekans ve bağlantı hattı güç tepkilerinde arzu edilmeyen salınımlara neden olur. Bu salınımlar güç sisteminin güvenirliğini/güvenliğini, üretilen enerjinin kalitesini ve son kullanıcıları yakından etkilemektedirler. Tüketime uygun üretimin gerçekleştirilmesinde sekonder frekans regülasyonu (SFR) kaçınılmaz bir kontrol tekniğidir. Bu çalışmada enterkonnekte bir güç sisteminde SFR performansının artırılması için üstel PI denetleyicisi önerilmiştir. Denetleyici parametrelerinin optimum ayarı için işlemsel zekâ tekniklerinden yılan arama algoritmasından (YAA) faydalanılmıştır. Böylece denetleyici parametreleri zaman ağırlıklı mutlak hatanın integral (ITAE) değeri en az yapılacak şekilde uzman bilgisine gerek duyulmadan optimum şekilde araştırılmıştır. YAA tabanlı üstel PI denetleyicinin alana katkısını doğrulamak amacıyla literatürdeki çalışmalarla karşılaştırmalar gerçekleştirilmiştir. Elden edilen sonuçlardan önerilen yöntem ile sistem performansının frekans ve bağlantı hattı güç tepkilerindeki osilasyon, oturma süresi, maksimum pozitif/negatif aşım ve ITAE değerleri bakımından iyileştiği anlaşılmıştır.

Keywords

Sekonder Frekans Regülasyonu (SFR), Üstel PI Denetleyici, Termik Güç Santrali, Fotovoltaik Güneş Enerji Sistemi, Yılan Arama Algoritması, Optimizasyon

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