Impact of solar generation connected to 0.4 kV grid on the power losses and the shape factor of load curve

摘要

In this paper, the results of load graphs measurements in the electrical network of public health facilities in Dushanbe (Republic of Tajikistan), to which solar cells are connected, are considered. In addition, the effect of connecting solar cells on the load graph configuration of the power supply system is analyzed. From the results of analysis, obtained that the average values of the load factor (density) and the irregularity factor of the load curve are almost unchanged, and the value of the shape factor after connecting the solar panels tends to decrease. The relative power loss values in distribution networks before and after the connection of solar cells are compared. It is found that, in some cases solar generation can lead to an increase in relative power losses. The problem of excess solar generation during the weekend, which leads to active power transfer from the consumer to the grid, is detected.