Control of Voltage and Loading Parameters of Interconnected Transmission System Using TCSC and SSSC Devices: An Example Power System Application

Öz

Different problems occur with the increasing energy demand in interconnected power systems operating under overload. The stability of the interconnected transmission system deteriorates with the growth of such possible problems or the simultaneous occurrence of several different problems. In order to correct these problems and increase the stability of the interconnected power system, Flexible Alternating Current Transmission System devices (FACTS) are connected to the power systems. FACTS devices, which consist of power electronics elements, instantly increase the loading capacity and stability of the power system with their fast and automatic response capabilities. In this study, a 420 kV Northwest Anatolian (KBA) Interconnected power system is investigated as an example power system. The most critical energy transmission lines are determined with the help of line stability indices in the examined high-voltage power system. FACTS devices, Thyristor Controlled Series Capacitor (TCSC), and Static Synchronous Series Capacitor (SSSC) are connected to the critical energy transmission lines in order to improve the voltage stability of the interconnected power system. At the end of the study, the effects of FACTS devices on bus voltage magnitudes, line loading parameter, active and reactive power losses in the power system are analyzed in detail.

Anahtar Kelimeler

• Northwest Anatolian interconnected power system
• FACTS devices
• Voltage stability
• Line stability indices

TCSC ve SSSC Cihazları Kullanılarak Enterkonnekte İletim Sisteminin Gerilim ve Yüklenme Parametrelerinin Kontrolü: Örnek Güç Sistemi Uygulaması

Öz

Aşırı yük altında çalışan enterkonnekte güç sistemlerinde artan enerji talebi ile birlikte farklı türde problemler oluşmaktadır. Olası bu tür problemlerin büyümesi ya da birkaç farklı problemin aynı anda meydana gelmesi ile birlikte enterkonnekte iletim sisteminin kararlılık yapısı bozulmaktadır. Bu problemlerin düzeltilmesi ve enterkonnekte güç sisteminin kararlılık yapısının arttırılması amacıyla güç sistemlerine Esnek Alternatif Akım İletim Sistemi cihazları (FACTS) bağlanmaktadır. Güç elektroniği elemanlarından meydana gelen FACTS cihazları hızlı ve otomatik tepki verme kabiliyetleri ile güç sisteminin yük taşıma kapasitesini ve kararlılık yapısını anlık olarak arttırmaktadır. Bu çalışmada örnek bir güç sistemi olarak 420 kV Kuzeybatı Anadolu (KBA) enterkonnekte güç sistemi incelenmiştir. İncelenen yüksek gerilim güç sisteminde hat kararlılık indeksleri yardımıyla en kritik enerji iletim hatları tespit edilmiştir. Enterkonnekte güç sisteminin gerilim kararlılık yapısının iyileştirilmesi amacıyla kritik durumdaki enerji iletim hatlarına FACTS cihazları, Tristör Kontrollü Seri Kapasitör (TCSC) ve Statik Senkron Seri Kapasitör (SSSC) bağlanmıştır. Çalışmanın sonunda ise, FACTS cihazlarının güç sistemindeki bara gerilim değerlerine, hat yüklenme parametresine, aktif ve reaktif güç kayıplarına olan etkileri detaylı olarak analiz edilmiştir.

Anahtar Kelimeler

• Kuzeybatı Anadolu enterkonnekte güç sistemi
• FACTS cihazları
• Gerilim kararlılığı
• Hat kararlılık indeksleri

Kaynakça

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