Computer modeling-based analysis of normal and emergency operation of power supply system at processing plant

The article discusses the use of computer modeling in the analysis of normal and emergency operation of power supply system at a diamond processing plant powered by outdoor switchgear 220/110 kW of electric substation Fabrika-3. Modeling of the transient processes was implemented in MatLab/Simulink. The article describes calculations for the substation components, transformer windings and nominal currents in the equivalent circuit of the transformer. The mathematical models of three-phase short circuit and lightning-stroke currents are presented. The electromagnetic transient processes in the power supply system are determined and analyzed. The article describes a case-study of the power supply system in coarse grinding workshop at a diamond processing plant. The normal operation modeling used the universal computer model of power supply of a factory unit, developed earlier by the present authors and modified for the test system. The fault points were selected at the voltages of 110, 6 and 0.4 kW. The lightning discharge model used in the study took into account the current amplitudes, build-up time and lightning pulse duration. As a result of modeling the normal operation, the total coincidence of three-phase voltage values was obtained at the selected levels, at an error not higher than 2%. The computer modeling results on the power supply system of a factory unit allow suggesting this approach as a complimentary technique in design of switchgears and electric substations. 

Semenov A. S., Semenova M. N., Bebikhov Yu. V., Yakushev I. A. Computer modeling-based analysis of normal and emergency operation of power supply system at processing plant. MIAB. Mining Inf. Anal. Bull. 2026;(9):162-181. [In Russ]. DOI: 10.25018/0236_1493_2026_9_0_162.

The study was carried out within the framework of an independent R&D at the Department of Power Industry and Industrial Automation at the Polytechnic Institute—Branch of the Ammosov North-Eastern Federal University in the city of Mirny, Republic of Sakha (Yakutia). 

A.S. Semenov, Dr. Sci. (Phys. Mathem.), Assistant Professor, Institute Molecules and Crystals Physics of the Ufa Federal Research Center of the Russian Academy of Sciences, Ufa, 450054, Russia,
e-mail: sash-alex@yandex.ru, ORCID ID: 0000-0001-9940-3915,
M.N. Semenova¹, Cand. Sci. (Phys. Mathem.), Assistant Professor, e-mail: mariya_semyonova86@mail.ru, ORCID ID: 0000-0002-7298-0226,
Yu.V. Bebikhov¹, Dr. Sci. (Phys. Mathem.), Assistant Professor, e-mail: bebikhov.yura@mail.ru, ORCID ID: 0000-0002-8366-4819,
I.A. Yakushev¹, Cand. Sci. (Phys. Mathem.), Assistant Professor, e-mail: yakushevilya@mail.ru, ORCID ID: 0000-0003-2539-7334,
¹ Polytechnic Institute (branch) North-Eastern Federal University named after M.K. Ammosov in Mirny, Mirny, 678174, Russia.

A.S. Semenov, e-mail: sash-alex@yandex.ru.

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