IMPACT OF SOLAR POWER PLANTS ON THE LOW VOLTAGE ELECTRICAL DISTRIBUTION NETWORK.

Abstract

In this work, it was determined what effect solar power plants have on the low-voltage electricity distribution network. The 0.4 kV cable line chosen for the study is connected to a 160 kVA modular transformer station. 12 consumers are connected to the line, of which 2 consumers are administrative, and 10 consumers are domestic, of which 3 are generating consumers. The total power installed by consumers is 133 kW, and the power of solar power plants is 34 kW. During the research, cable line monitoring was carried out with the "Metrel-mi2892" analyzer, in the presence of changing consumer loads and different powers generated by solar power plants. During the research period, it was established that producing consumers supplied 3 times more electricity to the electricity grid than they consumed. During the study, it was found that the phase voltages in the lines where the solar power plants are connected varied in a range from 223 V to 247 V. The total harmonic distortion of the voltage in individual phases of the network varied from 3 to 7 %.