Real-time monitoring and operation of power generation in a solar power plant with three phase central inverter topology

Year 2021, Volume: 10 Issue: 2, 563 - 568, 27.07.2021

Ali Ünlütürk , Fatih Sulan

https://doi.org/10.28948/ngumuh.911764

Abstract

In this article, real-time monitoring, control and operation of the power generation of Şenyurt (Erzurum/Turkey) Solar Power Plant (SPP) with a three-phase central inverter topology is discussed. In the study, firstly, the power generation model of Şenyurt SPP with direct grid feed and central inverter topology was examined. Secondly, the data obtained by means of solar radiation sensor, Photovoltaic (PV) panel temperature sensor, outdoor temperature sensor and wind speed sensor, which are vital for monitoring and controlling the power generation of SPP, were evaluated. Real-time data obtained from these sensors were obtained with the help of a remote monitoring interface compatible with the Central Control and Data Acquisition (SCADA) system in the SPP. With the data of the sensors, the graphs obtained regarding the change of one-day active power generation of the SPP are interpreted. Thus, the operational inspection of the SPP for uninterrupted active power generation was carried out. Finally, practical field applications such as cleaning the snow accumulated on the PV panel surface, detection of hot zone faults in PV panels, measurement of current-voltage (I-V) characteristics of PV panel arrays, which are necessary for efficient power generation in the solar power plant, are also included.

Keywords

Central inverter topology, Three phase inverter, Power monitoring and control, solar power plant

Thanks

We would like to thank to the Tegnatia Enerji Üretim San. Tic. A. Ş. for their support to our work.

Üç fazlı merkezi invertör topolojisine sahip güneş enerjisi santralinde güç üretiminin gerçek zamanlı izlenmesi ve işletimi

Abstract

Bu makalede, üç fazlı merkezi inverter topolojisine sahip Şenyurt (Erzurum/Türkiye) Güneş Enerjisi Santrali (GES) güç üretiminin gerçek zamanlı olarak izlenmesi denetimi ve işletimi ele alınmıştır. Çalışmada ilk olarak doğrudan şebeke beslemeli ve merkezi inverter topolojisine sahip Şenyurt GES’in güç üretim modeli incelenmiştir. İkinci olarak, GES'in güç üretiminin izlenmesi ve denetimi için oldukça hayati öneme sahip güneş ışınımı sensörü, Fotovoltaik (FV) panel sıcaklık sensörü, dış ortam sıcaklık sensörü ve rüzgar hızı sensöründen elde edilen veriler değerlendirilmiştir. Bu sensörlerden elde edilen gerçek zamanlı veriler GES'de bulunan Merkezi Denetim ve Veri Toplama (MD&VT) sistemi ile uyumlu olan uzaktan izleme arayüzü yardımıyla elde edilmiştir. Sensörlere ait verilerle GES’in bir günlük aktif güç üretiminin değişimine ait elde edilen grafikler yorumlanmıştır. Böylece GES’in kesintisiz aktif güç üretimine dair işletime denetimi gerçekleştirilmiştir. Son olarak GES’de verimli bir şekilde güç üretiminin gerçekleştirilebilmesi için gerekli olan FV panel yüzeyinde biriken karların temizliği, FV panellerde oluşan sıcak bölge arızalarının tespiti, FV panel dizilerine ait akım-gerilim (I-V) karakteristiklerinin ölçümleri gibi pratik saha uygulalarına da yer verilmiştir.

Keywords

Merkezi inverter topolojisi, Üç fazlı inverter, Güç izleme ve denetim, Güneş enerji santrali., solar power plant, solar power plant

References

• G. Y. Cao, J. Gao, T. Ermolieva, X. Xu and E. Rovenskaya, Societal dimension of energy consumption-exploring environmental inequality in China. Institute for Applied Systems Analysis, 8(2), 59-65, 2017. https://doi.org/10.5430/rwe.v8n2p66
• F. Birol, et. al., World energy outlook 2020, International Energy Agency, 1-464, 2020.
• Y. Gao, X. Gao and X. Zhang. The 2 ℃ global temperature target and evolution of the long-term goal of addressing climate change-from the United Nations framework convention on climate change to the Paris Agreement. Engineering, 3(2), 272-278, 2017. https://doi.org/10.1016/J.ENG.2017.01.022
• B. Burger, D. Kranzer, Extreme high efficiency PV-power converters. In: 13th European conference on power electronics and applications, pp. 1-13, Barcelona, Spain, 8-10 September 2009: IEEE.
• M. Saidan, A. G. Albaali, E. Alasis and J. K. Kaldellis, Experimental Study on the Effect of Dust Deposition on Solar Photovoltaic Panels in Desert Environment, Renewable Energy, 92, 499-505, 2016. https://doi.org/10.1016/j.renene.2016.02.031
• IRENA (2019), Renewable Power Generation Costs in 2018, International Renewable Energy Agency, Abu Dhabi, https://www.irena.org/-/media/Files/IRENA /Agency/Publication/2019/May/IRENA_Renewable-Power-Generations-Costs-in-2018.pdf, Accessed 10 May 2021.
• Solar Energy. https://www.irena.org/solar, Accessed 29 April 2021.
• L. Hassaine, E. OLias, J. Quintero and V. Salas, Overview of power inverter topologies and control structures for grid connected photovoltaic systems. Renewable and Sustainable Energy Reviews, 30, 796-807, 2014. https://doi.org/10.1016/j.rser.2013.11.005
• T. K. S. Freddy and N. A. Rahim, Photovoltaic Inverter Topologies for Grid Integration Applications, in Advances in Solar Photovoltaic Power Plants, Springer-Verlag Berlin Heidelberg, 2016, ch. 2, pp. 15-23. https://doi.org/10.1007/978-3-662-50521- 2_2
• Sunny Central 1000CP XT. https://files.sma.de/down loads/SC1000CP-DEN1751-V23web.pdf, Accessed 25 April 2021.