RESEARCH OF VOLTAGE ASYMMETRY IN ELECTRIC NETWORKS AT THE ENTRANCE OF AN APARTMENT BUILDING IN THE SOLNECHNY MICRODISTRICT OF IRKUTSK
The article presents the results of a study of voltage asymmetry in low - voltage electrical networks at the entrance to an apartment building located in the Solnechny microdistrict of the city of Irkutsk. A special measuring device Resource - UF2M was used for carrying out measurements. The measurements were carried out during one full week from 16:00 on June 8, 2021 to 16:00 on June 15, 2021 with a discreteness of 10 minutes, which made it possible to qualitatively assess the operation of the power supply system of an apartment building according to the measured parameters, take into account all consumer operating modes on weekdays and weekends, day and night. After conducting experimental studies, changes in active power, phase and phase-to-phase voltages, voltage asymmetry indicators were obtained and analyzed, recommendations were given to reduce voltage asymmetry and improve the quality of electrical energy. To reduce the voltage asymmetry in the electrical network, the load must be evenly distributed over the phases. If it is impossible to do this due to objective circumstances, then it is necessary to use special balancing devices. Balancing devices can be installed in the introductory switchgear of an apartment building or in the floor power panel of a group of apartments.