Methods for Improving the Quality of Electrical Energy in Distribution Networks

Abstract

The transition of the energy sector to market relations, an increase in electricity consumption by household consumers, as well as the massive introduction of digital control systems have led to increased requirements for the reliability and quality of power supply by distribution electric networks. District power distribution systems with a voltage of 0.4-10 kV are fundamentally different from urban ones in their considerable length and dispersion of many loads. Many 6–10 kV feeders are characterized by the presence of several dozen connections with a total trunk length of up to 20–30 km. In many cases, the quality of electricity in electrical distribution networks does not meet regulatory requirements. The growth of electricity consumption in the individual household sector, the connection of new loads in connection with the expanded construction, the dispersal of consumers over a large territory and their remoteness from power centers - all this negatively affects the decrease in the voltage level far beyond the permissible limits. The provision of standard indicators of the quality of electricity depends on the electricity producer, the power supply organization, and the consumer himself.