Analysis of some quality indicators electricity in the network 0,22 kV

Rural power supply is characterized by a large length of power transmission lines, the predominance of singlephase consumers, uneven distribution of loads in phases, and saturation of electrical appliances with a nonlinear volt-ampere characteristic. There are networks where the crosssection of power lines does not correspond to the transmitted power, and the number of connections in one span exceeds the PUE standards. Power transformers have developed their depreciation and passport service life, there are power transformers with a load factor exceeding their standard values. As a result of these features, the question arises of providing consumers with highquality electricity. Periodic monitoring of power quality indicators (PCE) carried out by grid companies on TP 6(10)/0,4 kV buses does not show the PCE values for consumers located in the middle or end of the lines. The article presents the results of measurements and analysis of electric power quality indicators in rural electric networks. Measurements of electric power quality indicators were carried out in distribution networks of 0,22 kV at points of electric power transmission to rural singlephase consumers. Based on the results of measurements, the main indicators of the quality of electric energy were analyzed, which most often did not meet the requirements of current standards. Descriptive statistics were analyzed the measured quality parameters of electricity (SCE) found ranges of values determine the forms of distribution asymmetry relative to the average determined standard error and deviation, sample variance. It was found that slow voltage changes did not correspond to the standard values. The coefficients of the harmonic components of the voltage that exceeded their standard values at the points of power transmission were revealed. The relevance of work on the need to bring the quality indicators of electricity to the requirements of GOST 32144-2013 in the rural electric network of 0,22 kV is confirmed.