Çekirdek yoğunluk kestirimi yönteminin rüzgâr türbini performans testinde kullanılması

Year 2020, Volume: 26 Issue: 5, 899 - 907, 23.10.2020

Ceyhun Yıldız Mustafa Şekkeli

Abstract

Rüzgar Enerjisi Santrallarında (RES) gerçekleştirilen performans testleri, santral işletmecileri ve türbin üreticileri için oldukça önemlidir. Performans testlerinde enerji üretim hesabı için rüzgar hızı dağılımlarının modellenmesi gerekmektedir. Bu çalışmada, performans testlerinde kullanılan rüzgar hız dağılım modellerinin Çekirdek Yoğunluk Kestirimi (ÇYK) yöntemi ile oluşturulması önerilmiştir. Önerilen yöntemin uygulaması Türkiye enterkonnekte elektrik şebekesine bağlı bir RES’e ait rüzgar türbini (RT) üzerinde gerçekleştirilmiştir. Uygulama sonucu elde edilen sonuçlar, literatürce kabul görmüş iki farklı yöntem ile kıyaslanarak değerlendirilmiştir. Kıyaslanan yöntemlerden ilki International Electrotechnical Commission (IEC) 61400-12-2 No.lu Standartta önerilen Rayleigh fonksiyonu ile dağılım modelleme yöntemidir. İkincisi RES fizibilite çalışmalarında tercih edilen Weibull fonksiyonu ile dağılım modelleme yöntemidir. Değerlendirme sonucunda ÇYK, Rayleigh ve Weibull fonksiyonları kullanan yöntemlerin sırasıyla %1.32, %4.36 ve %12.12 mutlak hata ile bir yıllık üretimi hesaplayabildiği görülmüştür. Bu durum önerilen yöntemin literatürce kabul görmüş ve çok yaygın olarak kullanılan iki yöntemden daha doğru sonuç verdiğini göstermektedir. Önerilen yöntemin bir diğer avantajı ise non-parametrik olması ve parametrik Weibull, Rayleigh fonksiyonu kullanan yöntemlerde olduğu gibi parametre hesabına ihtiyaç duymamasıdır.

Keywords

Rüzgâr türbini, Performans testi, Çekirdek yoğunluk kestirimi

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