Integration of Solar Power Plants to Grid with Optimal Connection Criteria and Energization of Critical Loads in Island Mode Operation

Abstract

The improvements and additional equipment implementation demand for the conventional grids are on increase as a result of the increase of the number of renewable power plants and smart grid components. The effect of the renewable power plants on the grid are on increase exponentially as the increase on the number of the renewable power plants.  In order to keep the grid stable and integrate the renewables to the grid optimally, necessary analysis have to be realized and the optimal integration criteria have to be investigated carefully. The other optimal integration factors are eligibility for island mode operation and energization of critical loads during a possible fault event along with grid stability and voltage regulation criteria. In this study, IEEE 13 bus test system is built in simulation environment as a district model along with a solar power plant (SPP) model and the SPP is integrated to existing district network. The optimal integration criteria of maintaining voltage regulation in a reasonable level, reducing line losses and the eligibility of island mode operation are investigated during the study steps. The optimal integration criteria are met as the result of the analysis on the simulated grid model and SPP integration study along with energization of critical loads during a grid blackout.

Keywords

• Smart grids,solar power plants,grid integration,optimal integration

Optimal Bağlantı Kriterlerine Göre Güneş Enerji Santrallerinin Şebeke Entegrasyonu ve Ada Modunda Çalışmada Kritik Yüklerin Enerjilendirilmesi

Öz

Akıllı şebeke bileşenlerinin ve yenilenebilir enerji kaynaklarının artması ile birlikte konvansiyonel şebekelere eklemeler ve iyileştirmeler yapılması kaçınılmaz olmuştur. Yenilenebilir enerji kaynaklarının sayısının artması ile birlikte şebeke üzerinde olan etkileri de katlanarak artmaktadır. Şebekede stabiliteyi korumak ve yenilenebilir enerji kaynaklarını optimal şekilde konumlandırabilmek için gerekli analizler gerçekleştirilmeli ve yenilenebilir enerji santrallerinin şebeke entegrasyonu bu kriterler baz alınarak sağlanılmalıdır. Stabilite ve optimal konumlandırma kriterlerinin yanı sıra dikkate alınması gereken diğer bir faktör ise ada modunda çalışma ve kritik yüklerin optimal şekilde enerjilendirilmesinin sağlanmasıdır. Gerçekleştirilen çalışmada IEEE 13 baralı test sistemi bir mahalle şebekesi olarak kullanılıp güneş enerji santrali (GES) entegrasyonu gerçekleştirilmiştir. Entegrasyon esnasında optimal bağlantı noktası seçimi, gerilim regülasyonu, hat kayıplarının azaltılması ve ada modunda çalışma kriterleri göz önüne alınmıştır. Kurulan şebeke modeli ve GES modelinin entegrasyonu ile optimal bağlantı kriteri sağlanmış ve şebekede meydana gelmesi muhtemel bir arıza esnasında kritik yüklerin GES ada modunda çalışma fonksiyonu ile enerjilendirilmesi sağlanmıştır.

Anahtar Kelimeler

• Akıllı şebekeler,güneş enerji santrali,şebeke entegrasyonu,optimal entegrasyon

Kaynakça

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