HIGHVOLTAGE UNIT FOR AUTOMATED MONITORING OF ELECTRICAL ENERGY QUALITY IN UNDERGROUND NETWORKS OF COAL MINES

Widespread introduction of converters in equipment systems of highly productive coal mines reveals some features to be taken into account in performance evaluation. One of such features is the power supply system which should be restructured by means of replacing a common distribution center or a power train by several distribution centers to supply individual power-hungry groups of consumers integrated into a single coherent system. Inclusion of converters in power systems reduces quality of electrical energy. Coal mines pay low attention to the improvement of the electrical energy quality. There are no electrical energy quality analyzers capable to operate in specific conditions of underground mines, especially in case of high hazard of gas and dust outbursts. For estimating effect of converters on the supply mains performance and to adjust the effect indicators, it is proposed to use the developed unit for automated monitoring of electrical energy quality in underground networks of coal mines. The patented unit described in this article enables automated monitoring of the electrical energy quality indexes and elevating actual power factor to a standard value if required, which ensures efficient operation of underground consumers in coal mines.


For citation:  Lyakhomskiy A. V., Plashchansky L. A., Reshetnyak S. N., Reshetnyak M. Yu. Highvoltage unit for automated monitoring of electrical energy quality in underground networks of coal mines. MIAB. Mining Inf. Anal. Bull. 2019;(7):207-213. [In Russ]. DOI: 10.25018/0236-1493-201907-0-207-213.

Keywords

Coal mine, power system, electrical energy quality, automated electrical energy quality control, harmonic composition of network, underground electric mains, wattless power compensation, electromagnetic compatibility.

Issue number: 7
Year: 2019
ISBN: 0236-1493
UDK: 621.398:621.316
DOI: 10.25018/0236-1493-2019-07-0-207-213
Authors: Lyakhomskiy A. V., Plashchansky L. A., Reshetnyak S. N., Reshetnyak M. Yu.

About authors: A.V. Lyakhomskiy, Dr. Sci. (Eng.), Professor, Head of Department, L.A. Plashchansky, Cand. Sci. (Eng.), Professor, Head of Chair, S.N. Reshetnyak, Cand. Sci. (Eng.), Assistant Professor, e-mail: reshetniak@inbox.ru, M.Yu. Reshetnyak, Graduate Student, Mining Institute, National University of Science and Technology «MISiS», 119049, Moscow, Russia. Corresponding author: S.N. Reshetnyak, e-mail: reshetniak@inbox.ru.

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