Optimal sizing of grid-connected hybrid energy systems for electric vehicle charging stations considering charging demand periods and economic parameters

Year 2023, Volume: 12 Issue: 4, 1481 - 1491, 15.10.2023

Alpaslan Demirci

https://doi.org/10.28948/ngumuh.1321628

Cited By: 1

Abstract

The development of electric vehicle (EV) technologies and the spread of EVs have made the expansion of charging infrastructure increasingly important. However, unplanned sizing of EV charging stations will have adverse technical, economic, and environmental impacts, especially on grid reliability and energy costs. This study performs a techno-economic evaluation of a solar PV-based hybrid power system considering variations in EV charging demand profiles and economic parameters. The results show that variations in demand profile and economic parameters significantly influence investment decisions. Higher inflation was most effective on peak evening demand profiles, increasing the levelized cost of energy by up to 2.2 times. Self-sufficiency can increase to 57% under grid sales constraints in the midday peak scenario. In addition, at maximum installed PV capacity, the SCR is 12% higher than in the evening peak, and curtailment is reduced by up to 4.5%. The results will expand the use of renewable energy with less grid dependency and faster achievement of zero carbon emission targets.

Keywords

Electric vehicle, Electric vehicle charging station, Energy storage systems, Hybrid power system, Optimization, Renewable energy source.

Elektrikli araç şarj istasyonları için şebekeye bağlı hibrit yenilenebilir enerji sistemlerinin şarj talep dönemleri ve ekonomik parametreler göz önünde bulundurularak optimum boyutlandırılması

Abstract

Elektrikli araç (EA) teknolojilerinin gelişmesi ve EA’ların yaygınlaşması, şarj altyapısının genişletilmesini giderek daha önemli hale getirmiştir. Plansız elektrikli araç şarj istasyonu boyutlandırması, özellikle şebeke güvenilirliği ve enerji maliyetleri üzerinde olumsuz teknik, ekonomik ve çevresel etkilere sahip olacaktır. Bu çalışma, elektrikli araç şarj talep profilleri ve ekonomik parametrelerdeki değişimleri göz önünde bulundurarak, güneş fotovoltaik tabanlı hibrit güç sisteminin tekno-ekonomik değerlendirmesi yapılmıştır. Elde edilen sonuçlar, yatırım kararlarının talep profilindeki ve ekonomik parametrelerdeki değişiklikleri önemli ölçüde etkilemiştir. Yüksek enflasyon en çok pik gece şarj talebi profillerinde etkili olmuş ve seviyelendirilmiş enerji maliyetini 2,2 katına kadar artırmıştır. Şebeke satış kısıtlamaları altında öğlen zirve senaryosunda kendi kendine yeterlilik %57'ye kadar artabilir. Dahası, maksimum PV kurulu gücünde SCR akşam zirve senaryosuna göre 12% daha yüksek olmayı başarmış ve faydalanılamayan enerji %4,5'e kadar azalmıştır. Sonuçlar, şebekeye daha az bağımlı yenilenebilir enerji kullanımını yaygınlaştıracak ve sıfır karbon emisyonu hedeflerine daha hızlı ulaşılmasını sağlayacaktır.

Keywords

Elektrikli araç, elektrikli araç şarj istasyonu, enerji depolama sistemleri, hibrit güç sistemi, optimizasyon, yenilenebilir enerji kaynağı

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