Introducing a New Method to Increase Critical Clearing Time (CCT) and Improve Transient Stability of Synchronous Generator Using Brake Resistance

Yıl 2020, Cilt: 6 Sayı: 2, 138 - 144, 25.08.2020

Ebadollah Amouzad Mahdiraji

Öz

In general, the stability of the power system can be considered a feature of the system that enables it to remain in equilibrium under normal conditions and regain a different acceptable state if affected by disturbance. Instability in a power system may take many forms, depending on the composition of the system and its operating modes. In order to evaluate the proposed method in damping transient fluctuations and network stability, a study has been carried out on a typical network. Since the topic of the article is in the field of transient stability, in part of the paper, braking resistance modeling in transient stability studies has been investigated. In the section on brake resistor control, brake resistor control is introduced by a switched Thyristor, using the trapezoidal method. Finally, the simulation results of the studied network are presented with the presence of TCBR and its capability of damping in the desired network.

Anahtar Kelimeler

Dynamic Brake Resistance, Stability, Oscillation Damping, Critical Clearing Time

Senkron Jeneratörün Geçici Kararlılığını ve Kritik Temizleme Süresini (CCT) Artırmak için Fren Direnci Kullanımı ile Yeni Bir Yaklaşımın Sunumu

Öz

Genel olarak güç sistemlerinin sürdürülebilirliği, sistemin normal şartlarda dengede kalmasını, türbülanstan etkilenmesi durumunda ise farklı bir duruma gelmesini sağlayan özellik olarak düşünülebilir. Güç sistemindeki kayıplar, sistemin yapısına ve çalışma koşullarına bağlı olarak birçok şekilde olabilir. Bu çalışmada, geçici dalgalanmaları ve ağ istikrarsızlığını azaltmak için yeni bir yöntem uygulanmıştır. Çalışmanın amacı geçici kararlılık olduğundan, geçici kararlılıkta termal direncin modellenmesi makalenin bir bölümünde tanıtılmıştır. Ardından, trapezoidal yöntem kullanılarak fren direnci kontrolüne karşılık gelen matematiksel eşitliğe sahip anahtarlı bir Tristör kullanılmıştır. Elde edilen simülasyon sonuçları, TCBR'nin varlığı ve istenen ağa gömülebilme yeteneği ile sunulmuştur.

Anahtar Kelimeler

Dinamik Fren Direnci, Geçici Kararlılık,, Salınım Sönümleme, Kritik Temizleme Süresi

Kaynakça

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