Çift Beslemeli Asenkron Generatör Tabanlı Rüzgar Çiftliğinde Alt-Senkron Rezonans Durumları için Koordinat Kontrolünün Geliştirilmesi

Öz

Güç sistemlerinde iletilebilir gücü artırmanın en yaygın yöntemlerinden birisi iletim hattına sabit bir yerleştirmektir. Ancak Seri kapasitör kullanım sistem kararlılığının kompanzasyon seviyesi ile ters orantılı olduğunu göstermektedir. Bu durum Alt-Senkron Rezonans (SSR) olarak adlandırılmaktadır. SSR sistemin güvenliği ve kararlılığı üzerinde olumsuz bir etkiye sahiptir. Bunun için yapılan bu çalışmada Tristör Kontrollü Seri Kapasitör (TCSC) ve şebeke tarafındaki evirici devresinde Ek Sönümleme Kontrolü (SDC) modelleri geliştirilerek, Çift Beslemeli Asenkron Generatör (ÇBAG) tabanlı rüzgar çiftliğinde SSR durumlarında oluşan salınımların sönümlenmesi ve sistem kararlılığının iyileştirilmesi amaçlanmıştır. Değişken rüzgar hızlarında ve farklı seri kompanzasyon oranlarında sistemde TCSC ve SDC modellerin etkileri detaylı olarak incelenmiş olup, elde edilen sonuçlar yorumlanmıştır. Elde edilen sonuçlar neticesinde değişken rüzgar hızlarında ve farklı seri kompanzasyon oranlarında TCSC ve SDC’nin sistem kararlılığı ve salınımların sönümlemesi açısından iyi sonuçlar verdiği görülmüştür.

Anahtar Kelimeler

• Çift Beslemeli Asenkron Generatör Tabanlı Rüzgar Çiftliği
• Alt-Senkron Rezonans
• Tristör Kontrollü Seri Kapasitör
• Ek Sönümleme Kontrolü

Development of Coordinate Control for Sub-Synchronous Resonance Conditions in Doubly Fed Induction Generator Based Wind Farm

Öz

One of the most common methods for increasing the transferable power in power systems is the installation of a fixed series capacitor in the transmission line. However, the use of series capacitors shows that system stability is inversely proportional to the compensation level. This phenomenon is referred to as Sub-Synchronous Resonance (SSR). SSR has a negative impact on the security and stability of the system. Therefore, in this study, Thyristor Controlled Series Capacitor (TCSC) and Supplementary Damping Control (SDC) models implemented in the grid-side converter were developed in order to damp the oscillations occurring under SSR conditions and to improve system stability in Doubly Fed Induction Generator (DFIG) based wind farm. The effects of the TCSC and SDC models on the system were examined in detail under variable wind speeds and different series compensation levels, and the obtained results were interpreted. Based on the results, it was observed that TCSC and SDC provide good performance in terms of system stability and oscillation damping under variable wind speeds and different series compensation levels.

Anahtar Kelimeler

• Doubly Fed Induction Generator
• based wind farm
• Sub-Synchronous Resonance
• Thyristor Controlled Series Capacitor
• Supplementary Damping Control

Kaynakça

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