Improvement of Electricity Quality Indicators in Electric Networks with Voltage of 0.4-10 kV

The problem of ensuring the proper quality of electricity does not lose its relevance, since many electrical appliances are used in production and at home, which are extremely sensitive to voltage deviations from acceptable values specified in GOST 32144-2013 "Electric energy. Electromagnetic compatibility. Quality standards for electric energy in general-purpose power supply systems." The increase in electricity consumption in the domestic sector is associated with the widespread use of various types of electrical appliances, as well as with the intensive introduction of new consumers, which in many cases leads to unacceptable voltage deviations. Power lines designed according to the norms of power consumption of the 80-90s no longer have the necessary bandwidth. Deviations of voltage beyond the permissible values lead to a malfunction and a decrease in the service life of electrical appliances. The insufficient pace and high cost of reconstruction of distribution electric networks with a considerable length, combined with an increase in energy consumption lead to a deterioration in the quality of electricity, which in many cases no longer meet regulatory requirements. An important factor affecting energy saving is the asymmetry of the load of distribution electric networks on the side of 0.4 kV, which causes additional losses of electricity both in phase wires and in the neutral wire.