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Abstract

This article simulates the operation of photovoltaic installations consisting of photovoltaic panels of crystalline and thin-film technologies. The calculations were performed in the PVSyst software package 7.4.8 version. In the calculations, the input parameters were environmental factors, the angle of inclination of the panels to the horizon. In calculating the values of the solar radiation flux density, the program selects the METEONORM climate database in accordance with the geographical area of the Tashkent city. The tilt angles of the photovoltaic panels of the installation were set manually by selecting specific values of the characteristic tilt angles in the range from 0⁰ to 90⁰. As a result of the simulation of the operation of photovoltaic installations, were determined dinamics of changes in the parameters of photovoltaic panels of crystalline and thin-film technologies depending on the angle of inclination to the horizon and environmental factors. Important parameters of photovoltaic panels are the coefficient of productivity, electricity production per day, year, losses in the panel array, system losses, losses related to the operation of the inverter, connecting parts of the installation. The comparison of the output parameters of photovoltaic installations of different technologies was carried out based on 1 kW of installed capacity. One of the objectives of this work was to determine the performance characteristics of photovoltaic panels when installed vertically in the autumn-winter period of the year. In the period from November to February, due to the sunlight falling on the surface of the panels close to the perpendicular, the productivity coefficient is in the order of 5.8% higher than in the summer. Calculations show an approximation of the energy production indicators of photovoltaic panels of crystalline silicon and thin-film panels of cadmium telluride. In the spring and summer period, the maximum values of energy production correspond to the angles of inclination of the panels in the range of 30-41 degrees to the horizon.

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