Analysis of Electrical Installation of a Photovoltaic Power Park in Greece

The scope of this paper is to describe a real electrical installation of renewable energy using photovoltaic cells. The displayed power grid connected network was established in 2007 at area of Northern Greece. The photovoltaic park is composed of 6120 photovoltaic cells able to deliver a total power of 1.101.600 Wp. For the transformation of DC voltage to AC voltage have been used 25 stand alone three phases inverters and for the connection at the medium voltage network of Greek Power Authority have been installed two oil immersed transformer of 630 kVA each one. Due to the wide space area of installation a specific external lightning protection system has been designed. Additionally, due to the sensitive electronics of the control and protection systems of park, surge protection, equipotent bonding and shielding were also of major importance.

Authors:

• D. E. Gourgoulis
• C. G. Yakinthos
• M. G. Vassiliadou

Keywords:

• Inverter
• Photovoltaic cells
• Transformer.

References:

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[2] Hellenic Regularity Authority of Energy, www.rae.gr
[3] Greek Public Power Authority, www.dei.gr
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