DETERMINATION OF OPTIMUM PENETRATION LEVEL IN THE DISTRIBUTED GENERATION INTEGRATED POWER SYSTEMS

Abstract

In this study, the optimization of the penetration level and allocation of distributed generation (DG) in single- and multiple- DG concepts are investigated on three typical test networks in order to obtain more reliable DG-integrated power system and develop some rules to be used at network management centers. An improper integration of DG units, without detailed analysis, decreases the reliability and efficiency of power networks. Although DGs can decrease power loss and improve voltage profile, they can cause the congestion on transmission lines at some penetration levels. For this reason, line flows are also considered besides power loss and voltage profile in this paper. In this manner, a threshold penetration level is investigated by considering both single- and multiple- DG concepts. According to the results of optimization, voltage profiles and line flows are observed on the IEEE test networks while minimizing power loss in order to reveal some rules in terms of power system planning

Keywords

• Distributed power generation, Power loss, Voltage profile, Line flows

DAĞITILMIŞ ENERJİ ÜRETİM TESİSLERİ ENTEGRE EDİLMİŞ GÜÇ SİSTEMLERİNDE OPTİMUM KATILIM ORANININ BELİRLENMESİ

Abstract

Bu çalışmada, dağıtılmış enerji üretim tesisleri (DEÜ) entegre edilmiş elektrik şebekelerinin daha güvenilir çalıştırılabilmesine ve yönetilebilmesine yardımcı olması noktasında bazı kurallar geliştirilebilmesi amacıyla üç farklı şebeke üzerinde farklı sayıdaki DEÜ tesislerinin optimum katılım oranlarının (KO) ve bağlanma noktalarının belirlenmesine yönelik analizler yapılmıştır. DEÜ entegre edilmiş şebekelerin detaylı bir analizi yapılmaksızın şebekeye rastgele dahil edilmesi şebekenin güvenilirliğinin ve veriminin azalmasına neden olabilmektedir. DEÜ konsepti her ne kadar şebeke kayıplarında azalma ve gerilim profillerinde iyileştirmeye yardımcı olsa da, mevcut iletim hatlarının kapasiteleri bazı KO seviyelerinde yetersiz kalabilmektedir. Bu nedenle, bu çalışmada şebeke kayıpları ve gerilimlerin yanı sıra mevcut hat kapasiteleri de analizlerde dikkate alınmıştır. Bu bağlamda, tek ve birden fazla DEÜ bağlantılarında bir eşik KO değerinin olup olmadığı araştırılmıştır. Optimizasyon sonuçları neticesinde, şebeke planlaması açısından bazı temel kuralların elde edilmesi amacıyla şebeke kayıpları minimize edilirken gerilim profili ve hat akışları IEEE test şebekeleri üzerinde gözlemlenmiştir

Keywords

• Dağıtılmış enerji üretimi, Hat kayıpları, Gerilim profili, Hat akışları

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