Authors: S.N. Reshetnyak, G.M. Lebedev, L.E. Mametyev, T.M. Chernikova

Title of the article: Technical and economic assessment of the influence of higher harmonic components on the efficiency of the electro-technical complex functioning of a coal mine

Year: 2025, Issue: 1, Pages: 4-21

Branch of knowledge: 2.8.8 Mining machines, geotechnology (engineering)

Index UDK: 621.31

DOI: 10.26730/2618-7434-2025-1-4-21

Abstract: The publication presents the results of the study of technical and economic evaluation of the influence of higher harmonic components on the efficiency of functioning of the electrical system of a coal mine. The conducted research has allowed to substantiate the necessity to study the influence of higher harmonic components in the electrical system of a coal mine of high productivity. This is due to a significant increase in the number of equipment that uses in electric drive systems converter load, which generates higher harmonic components of voltage and current, negatively affecting the efficiency of the electrical complex of a coal mine. Exceeding the permissible level of higher harmonic components leads to violations of nominal modes of operation of the main technological equipment and as a result – a decrease in its productivity; false triggering of protections, as a consequence of this – downtime of sections and the mine as a whole, which leads to a decrease in coal production, an increase in the cost of its production. In addition, the service life of electrical equipment is reduced, including the wear of cable lines due to the violation of insulation, which leads to an increase in the probability of accidents. In order to solve this problem, it is proposed to use the method of simulation modeling of the electrical engineering complex of a coal mine, taking into account the decomposition of the power supply system, in order to techno-economic assessment of the impact of converter load on power quality indicators. A simulation model of the coal mine power supply system was synthesized in order to study the generation and damping of higher harmonic components when using filter compensating devices. As a result of the study, conclusions were obtained about the possibility of improving the efficiency of the electrical system of a coal mine, with the expected effect caused by the limitation of higher harmonic components will be about 1.5% of the volume of active energy losses.

Key words: coal mine power supply system electro-technical system higher harmonic components power quality indicators processing equipment filter compensating devices technical and economic assessment efficiency of functioning

Receiving date: 14.12.2024

Approval date: 25.01.2025

Publication date: 17.06.2025

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