ASSESSMENT OF THE IMPACT OF TECHNOLOGICAL FAILURES OCCURRING IN HOISTING CONVEYOR MECHANISMS DUE TO ELECTRIC DRIVE OVERLOADS ON THE QUALITY OF ELECTRIC POWER

Abstract

This scientific work examines the key causes of power quality deterioration in In this work, the present study is aimed at a comprehensive analysis of the causes of electric drive overloads, the classification of the resulting faults, as well as the identification of their impact on the quality indicators of electric power, including voltage, frequency, phase symmetry, and power factor. Currently, with the increasing depth of mining, the extension of transportation distances leads to higher operational costs for the conveyor electric drive system. In addition, the electric drive system for coal transportation operates with a large number of devices, whose parameters require optimization. Under modern operating conditions of mining enterprises, particular attention is paid to the reliability and energy efficiency of electric drive systems used in coal transportation. The increase in mining depth and the length of transportation lines leads to higher mechanical and electrical loads on the drive units, necessitating a detailed analysis of the causes of their overloads. Overloads can occur due to uneven load distribution among drives, fluctuations in supply voltage, as well as wear of mechanical components. These factors have a direct effect on electric power quality parameters, including voltage stability, frequency, phase symmetry, and power factor. Deviations of these indicators from the standards result in a decrease in the overall system efficiency and an increase in operating costs. Therefore, a pressing task is the development of methods for diagnosing and classifying faults, as well as optimizing electric drive parameters, taking into account the specific operating conditions of multi-drive conveyor systems, which will enhance their reliability and reduce energy consumption.