The subject of the project proposal of "Walk Food P" Ltd. in Sofia is a photovoltaic power plant, built on a metal structure, performing the function of a canopy, intended for the production of electricity for its own needs. The plant will have a capacity of 12.42kWp of photovoltaic system and 20.4kWh of energy storage batteries. When building the installation, 27 high-efficiency monocrystalline photovoltaic modules will be used, with a unit weight of 21kg and dimensions of 1762mm x 1134mm x 30mm, nominal power 460Wp. Thus, the total installed power of the photovoltaic modules will be up to 12.42kWp. To achieve the required generated power, the photovoltaic panels will be connected to a three-phase inverter of 18kW. The maximum AC power will be 18kVA. This inverter is hybrid. The hybrid inverter is an intelligent device that allows excess solar energy to be stored in a battery and used when necessary. The inverter has 2 MPPT inputs, which allows the connection of photovoltaic panels with different exposure or inclination. Based on the estimated consumption of 20MWh provided by the client for the past year, 4 batteries with a total capacity of 20.4kWh are planned. The system will be installed on a metal structure, type Car-port carport. The mounting system will consist of aluminum rails mounted in an array with a hot-dip galvanized metal structure, which will be anchored in a concrete base. It is planned to install an alternating current and direct current panel (AC/DC), which has current and voltage protection. Current protection will be provided by circuit breakers, and voltage protection will be provided by an arrester. The photovoltaic system will be built with equipment of the highest class and established manufacturers.
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