Load Sharing Modelling in AC Traction Power Distribution Systems of Urban Metros

Öz

In Turkey, as a solution to traffic problems in metropolitan areas public transportation that travel on the guided way such as rail systems is preferred. Railway transport is the most preferred type of public transport, as well as its carrying capacity and low-cost energy consumption in developed countries. Therefore, the demand for rail transport has been increasing significantly over the years in proportinoal to increasing urban population. There is also an increase in energy consumption and accordingly power loss in proportion to increasing demand. Therefore, power flow analysis of the rail systems in the project design phase is critical.. By means of AC power flow analysis, equipment to be used in rail systems (cable cross section, MV switchgear, transformer power, load separator and breakers, etc) and the characteristics of these equipments are determined. In this study, power flow analysis is performed on M5 Üsküdar – Yamanevler driverless metro line. According to the simulation results obtained by using ETAP(Electrical Transient and Analysis Program) software, solutions are provided considering the worst cases for the safe and sustainable power flow.

Anahtar Kelimeler

• Rail Systems,Energy,Load Analysis,Modelling

Metro AC CER Güç Dağıtım Sistemlerinde Yük Paylaşımının Modellenmesi

Öz

Türkiye’de, Büyükşehirlerdeki trafik sorununa çözüm olarak raylı sistemler gibi kendisine ayrılmış yol üzerinde hareket eden toplu taşıma araçları tercih edilmektedir. Raylı sistemler, taşıma kapasitesi ve düşük maliyetli enerji tüketimi nedeniyle gelişmiş ülkelerde en çok tercih edilen toplu taşıma türüdür. Artan taleple doğru orantılı olarak enerji ihtiyacı ve güç kaybında da bir artış vardır. Bundan dolayı raylı sistemlerin proje tasarım aşamasındaki güç akışı analizi kritik önem arz etmektedir. Güç akış analizi ile raylı sistemlerde kullanılacak ekipmanlar (kablo kesiti, OG hücresi, CER transformatör gücü, yük ayırıcı ve kesiciler vb) ve bu ekipmanların teknik özellikleri belirlenir. Bu makalede M5 Üsküdar – Yamanevler Sürücüsüz metro hattında güç akış analizi, alternatif işletme senaryoları için yapılmıştır. Bu çalışmada ETAP (Elektriksel Geçici Rejimve Analiz Programı) yazılımı kullanılarak elde edilen benzetim sonuçlarına göre, güvenli ve sürdürülebilir güç akışı için en kötü durumlar gözönüne alınarak çözümler sunulmuştur.

Anahtar Kelimeler

• Raylı Sistemler,Enerji,Yük Analizi,Modelleme

Kaynakça

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