Investigation of the Shading Effect on the Performance of a grid-connected PV Plant in Samsun/Turkey

Keskin, Vedat; Khalejan, Seyed Hamed Pour Rahmati; Çikla, Recep

doi:10.2339/politeknik.701525

Cited by 7 publications

(5 citation statements)

References 32 publications

(27 reference statements)

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“…Experimental data were recorded and calculations related to the data were made. Technical details of this research are available in the literature [11].…”

Section: Resultsmentioning

confidence: 99%

“… The instantaneous solar radiation hitting the surface of the PV modules was determined by calculating the Liu and Jordan method [12] and measuring the solar radiation.  Electrical efficiency calculations of shading-affected and unaffected PV arrays have been discussed in the previous publication [11].  For economic calculations, instantaneous/average values are used instead of annual electricity generation.…”

Section: Methodsmentioning

confidence: 99%

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Exergoeconomic Analysis of a Photovoltaic Array Affected by Dynamic Shading

Keskin

2023

Journal of Scientific Reports-A

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Photovoltaic (PV) panels are affected by undesirable elements that exist around them, trees, structures, clouds, etc., as well as natural dirt, and dust accumulation on the PV surfaces. Unfortunately, partial shading falling on top of the PV panels may affect badly the output of photovoltaic arrays. In this study, an exergoeconomic analysis has been performed on the impact of dynamic partial shading created by a mislocated building on a photovoltaic array. Both experimental and theoretical results of this study have been compared on ambient temperature, solar radiation intensity, and shading ratio. The observations have been carried out on clear days starting in June 2018 to Mai 2019. According to the results, the shaded PV exergy efficiency (6.87%) and exergoeconomic parameter (Rex= 0.18508 W/$) are maxima in June and minimum in February (Ex =4.76%, Rex= 0.12228 W/$). As a result of this study, it can be said that the PV array exposed to long-term shading will seriously affect the service life of the PV array.

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“…Experimental data were recorded and calculations related to the data were made. Technical details of this research are available in the literature [11].…”

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Exergoeconomic Analysis of a Photovoltaic Array Affected by Dynamic Shading

Keskin

2023

Journal of Scientific Reports-A

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“…Günümüzde teknolojinin gelişimi sonucunda PV hücrelerin üretim maliyetlerinin düşmesi, PV modüllerin bağımsız enerji üretim sistemlerinde ya da şebekelerde daha çok tercih edilen enerji kaynakları haline gelmiş olup PV modüllerinin doğru şekilde modellenmesi, etkin değerlendirme açısından önemli bir rol oynamaktadır [1]. Bunun yanı sıra, eşdeğer devre parametrelerine dayanan sistemin çıkış akımı ve güç eğrileri, tasarım ve boyutlandırma açısından büyük önem taşımaktadır [2].…”

Section: Gi̇ri̇ş (Introduction)unclassified

PV Modüller/Hücrelerin Tek-Diyot Eşdeğer Devre Parametrelerinin Kestirimi İçin Yeni Bir Analitik Model

EMİNOĞLU,

ATAY

2023

Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım Ve Teknoloji

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Bu çalışmada PV modüller için tek-diyot eşdeğer devre parametrelerinin belirlenmesine ilişkin analitik bir model önerilmektedir. Çalışmada ilk olarak literatürde mevcut çok sayıda PV modüller için kısa devre akımı (Isc) ve foton akımı (Ipv) değerleri kullanılarak eğri uydurma yöntemi ile akımlar arasında bir matematiksel bağıntı oluşturulmuştur. Daha sonra, akımlar arasında geliştirilen bu bağıntı eşdeğer devre denklemlerinde kullanılarak 3 bilinmeyenli (Rp, Rs ve a) denklem sisteminden oluşan analitik model geliştirilmiştir. Yapılan analizler, model ile elde edilen eşdeğer devre parametrelerinin ve sonucunda oluşturulan I-V ve P-V karakteristiklerinin deneysel veriler ile çok büyük oranda örtüştüğünü göstermektedir. Bu nedenle hesaplanan ve gerçek veriler arasındaki Hatanın Ortalama Karekökü (RMSE) ve Belirleme Katsayısı (R2) değerleri ihmal edilebilir düzeyde bulunmuştur. Ayrıca modelin diğer yöntemlere göre parametre kestiriminde kullanım kolaylığı, deneysel verilere daha az ihtiyaç duyma ve tüm parametreleri belirleyebilme gibi avantajları olduğunu söylemek mümkündür.

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“…Using solar tracking systems or tilting the panels can help to reduce shading effects and maximize the amount of sunlight that reaches the panels [19]. Keskin et al [20] experimentally investigated the effects of shading on the PV system. The study considered the shading effect on a 30 kW installed PV system.…”

Section: Introductionmentioning

confidence: 99%

Farklı Dizi Aralığında Eğim Açısının Fotovoltaik Sistemlerin Performansina Etkisi

AKSOY,

İSPİR,

YEŞİL

2023

Politeknik Dergisi

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The optimum tilt angle for a photovoltaic (PV) system depends on the row spacing because it affects the amount of shading on the panels. This study modeled PV systems for four different panel row spacings of 2 m, 2.5 m, 3 m, and 4 m in a fixed 3000 m² area in Konya province, Turkey. For different panel row spacings, the system performances were compared using a constant tilt angle of 35°, expressed as a proper angle for PV installations at the considered location. In addition, the optimum tilt angle is found for four different cases in terms of electricity generation. In systems with 35° tilt angles at electricity were produced annually as 622.77 MWh, 566.49 MWh, 495.36 MWh, and 385.72 MWh, respectively, for panel row spacings of 2 m, 2.5 m, 3 m, and 4 m. In addition, these electricity productions are 6.19%, 4.41%, 2.56%, and 0.92% higher with optimum tilt angles as 1°, 15°, 21° and 27°. Similarly, the Performance Ratio (PR) values obtained with the optimum angles are 20.61%, 8.39%, 4.12%, and 1.44%, higher than the fixed tilt angle cases. According to the economic analysis, systems with a fixed tilt angle for these panel row spacings pay back themselves in 5.13, 4.67, 4.44, and 4.28 years, respectively, while systems at optimum angles pay back themselves in a shorter time by 5.83%, 4.26%, 2.49%, and 0.91%. Furthermore, the highest NPV/INV, IRR, and ROI values were obtained from the system with 3 m panel row spacing with the optimum tilt angle of 21° as 0.915, 20.42%, and 91.57%, respectively, which is techno economically found to be the most feasible case.

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Investigation of the Shading Effect on the Performance of a grid-connected PV Plant in Samsun/Turkey

Cited by 7 publications

References 32 publications

Exergoeconomic Analysis of a Photovoltaic Array Affected by Dynamic Shading

Exergoeconomic Analysis of a Photovoltaic Array Affected by Dynamic Shading

PV Modüller/Hücrelerin Tek-Diyot Eşdeğer Devre Parametrelerinin Kestirimi İçin Yeni Bir Analitik Model

Farklı Dizi Aralığında Eğim Açısının Fotovoltaik Sistemlerin Performansina Etkisi

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