Abstract
This article presents the results of calculation and analysis of indicators of graphs of electrical loads, energy efficiency and evaluation of reliability indicators of power supply systems of the scheme on the example of mining enterprises. The expediency of substantiating the preliminary analysis of electrical load profiles with the subsequent use of a general logical-probabilistic method for calculating the reliability of power supply systems is substantiated. А comparative analysis of the calculation of reliability indicators (availability coefficient, average operating time, average recovery time, probability of failure-free operation) for individual consumers in case of failure of several elements is presented. The influence of the reliability of individual elements on the reliability of the system as a whole is evaluated. А comprehensive approach is proposed to solve the problem of assessing energy efficiency indicators (specific electricity consumption for open-pit mining, specific electricity consumption for processing plants, the number of hours of power use) and reliability indicators of power supply systems for mining enterprises by applying a logical-probabilistic calculation method under the condition of limited power supply. Recommendations for improving energy efficiency and analyzing the reliability of power supply to industrial enterprises are given.
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