Çift Beslemeli Asenkron Generatör Tabanlı Rüzgar Türbinlerinde Azaltılmış Derece Modeli Tabanlı Aktif-Reaktif Kompanzatör Modelin Geliştirilmesi

Öz

Şebekeye bağlı olan ÇBAG tabanlı Rüzgar Türbinleri geçici kararlılık durumlarından çok etkilenmektedir. Geçici kararlılık durumlarında ÇBAG’da aşırı akımların ve salınımların olması sisteme zararlar verebilmektedir. Bunları ortadan kaldırmak için bu çalışmada azaltılmış derece modeli tabanlı aktif-reaktif kompanzatör modellerin geliştirilmesi amaçlanmıştır. Sistemde hesaplama kolaylığının sağlanması ve benzetim çalışması performansının arttırılması için azaltılmış derece modeli geliştirilirken, stator devresinde aktif kompanzatör modeli ve rotor devresinde de pasif kompanzatör modeli geliştirilmiştir. Yapılan çalışmada geleneksel olarak kullanılan model ile önerilen modellerin karşılaştırmaları yapılmıştır. 3 faz arızası, 2 faz arızası ve 1 faz toprak arızasında karşılaştırmalar 34.5 kV bara gerilimi, ÇBAG çıkış gerilimi, açısal hız ve aktif güç parametrelerine göre yapılmıştır. Yapılan çalışma sonucunda, geliştirilen modelin geleneksel modele göre salınımları kısa sürede sönümlediği ve sistemin kısa süre içerisinde kararlı hale getirdiği görülmüştür.

Anahtar Kelimeler

• ÇBAG tabanlı Rüzgar Türbini
• Azaltılmış Derece Modeli
• Aktif-Reaktif Kompanzatör
• Geçici Kararlılık

Enhancement of Reduced Order Model Based Active-Reactive Compensator Model in Doubly Fed Induction Generator-based Wind Turbines

Öz

DFIG based wind turbines connected to the grid are greatly affected by transient stability conditions. In transient stability conditions, excessive currents and oscillations in DFIG can damage the system. In order to eliminate these, the aim of this study is to develop active-reactive compensator models based on reduced order model. While the reduced order model was developed to provide ease of calculation in the system and to increase the performance of the simulation study, an active compensator model was developed in the stator circuit and a passive compensator model was developed in the rotor circuit. In the study, comparisons were made between the traditionally used model and the proposed models. Comparisons were made for 3 phase faults, 2 phase faults and 1 phase ground faults according to the parameters of 34.5 kV bus voltage, DFIG output voltage, angular speed and active power. As a result of the study, it was observed that the developed model damped the oscillations in a short time compared to the traditional model and stabilized the system in a short time.

Anahtar Kelimeler

• DFIG based Wind Turbine
• Reduced Order Model
• Active-Reactive Compensator
• Transient Stability

Kaynakça

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