Analyze and Construction of a Photovoltaic (PV) Power Plant Connected to the Grid to Produce Maximum Power on the Roof of the Building

This paper is for technical studies and optimal selection for the angle of the panels and the feasibility of building a 20 kW power plant connected to the grid in the electricity distribution company of Tehran province with geographic coordinates of 1181 m above sea level, longitude and latitude $35^{\circ} 41^{\prime} 29{ }^{\prime \prime}, 51^{\circ} 26^{\prime} 53^{\prime \prime}$,taking into account the lack of shadow conditions and selecting the back-to-back distance in the rows of each panel for ease of maintenance and repairs and absorbing the most sunlight and producing it by photovoltaic arrays into energy and injecting it to the national grid. Also, the correct selection of electrical equipment such as inverter, panel, the optimal selection of the voltage produced by the strings compared to the working voltage of the inverter, which is one of the most important parts of the construction of this power plant.This power plant produces $35.920 \mathrm{MWh} / \mathrm{yr}$ of electricity annually and has reduced greenhouse gas emissions by 3875 Kg per month. Therefore, it can be effective in encouraging investment in the construction of these small power plants in the residential sector. and its results and the amount of production of this power plant during one year show the optimal design and construction of this solar site.