In this paper, a type of 10 kV full buried box-type substation, which consists of buried box, high-voltage power supply system, low-voltage distribution system, transformer and intelligent control system is designed. Above all, the overall design and the key equipment of the full-buried substation are described.
The SM device is a component in a solar power plant that allows for efficient error finding and total electric consumption control in the factory. It is installed in the main distribution cabinet of the PV solar power plant, as shown in Figure 6. The SM device is also found in the existing transformer station.
In a photovoltaic solar power plant with a 10kV transformer, overcurrent protection is achieved by HRC fuses of 400A, which are installed in the main distribution cabinet. This setup is shown in Figure 6.
The PV solar power plant in Vlasotince Varo was built by the Municipality of Vlasotince Varoš. The investor of the complete plant is the company GRUNER.
The PV solar power plant is located on Oreškovića Street, specifically on cadastral parcels number 864/13, 864/18, in the cadastral municipality of Vlasotince. Figure 1 shows the position of the object based on GPS coordinates (longitude).
Junction boxes where the wiring of individual PV strings is performed contain disconnecting switch. Solar panels are protected from the possible occurrence of inverse current, overload and short circuits. A total of 21 solar panels are connected in series within each string.