Vestnik КRAUNC. Fiz.-Mat. nauki. 2023. vol. 43. no. 2. P. 126-140. ISSN 2079-6641

Research Article
Full text in Russian
MSC 94A12

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Reactive Power Compensation in Thermal Ore Production

A. A. Mahoshev¹^\ast, O. A. Gavrina¹, R. V. Klyuev²

¹The North Caucasian Institute of mining and metallurgy (State Technological University), 44, Nikolaeva, Vladikavkaz, 362011, Russia
²Moscow Polytechnic University, 38, B. Semenovskaya, Moscow, 107023, Russia

Abstract. The paper deals with the issues of reactive power compensation during the operation of arc steelsmelting furnaces (EAF) in ore-thermal production. The values of voltage non-sinusoidality coefficients for various EAF melting modes are given. Comprehensive studies were carried out, presenting an analysis of the effectiveness of reducing voltage distortion by power filters, which can be presented without a dynamic group, and comparing the data obtained with the results of using filters of the 3rd and 5th harmonics, which are part of reactive power compensators. The results of studies of the distortion of the shape of the voltage curve during the operation of the EAF indicate that in the absence of dynamic compensation devices, the requirements of the state standard for the quality of electricity are provided without turning on filters. Filters are needed to limit consumption while eliminating the possibility of resonance in parallelconnected capacitors and source-coupled inductive reactances. According to the results of the performed calculations, it can be seen that by installing the 3rd harmonic filter on the ZRU-35 kV buses, significant results were achieved, namely, the voltage swings were minimized (up to 0.78%) and the issue of reactive power compensation was simultaneously resolved (cosφ = 0.95) at the lowest unit cost.

Key words: compensation, reactive power, steel-smelting arc furnace, non-sinusoidal voltage, harmonic filter, static compensator.

Received: 29.05.2023; Revised: 25.06.2023; Accepted: 26.06.2023; First online: 07.07.2023

For citation. Mahoshev A. A., Gavrina O. A., Klyuev R. V. Reactive power compensation in thermal ore production.
Vestnik KRAUNC. Fiz.-mat. nauki. 2023, 43: 2, 126-140. EDN:VQAYYO.

Funding. The authors declare that there are no conflicts of interest regarding authorship and publication.

Competing interests. There are no conflicts of interest regarding authorship and publication.

Contribution and Responsibility. All authors contributed to this article. Authors are solely responsible for providing
the final version of the article in print. The final version of the manuscript was approved by all authors.

^\astCorrespondence: E-mail:,,

The content is published under the terms of the Creative Commons Attribution 4.0 International License

© Mahoshev A. A., Gavrina O.A., Klyuev R. V., 2023

© Institute of Cosmophysical Research and Radio Wave Propagation, 2023 (original layout, design, compilation)


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Information about authors

Mahoshev Artur Ahmatovich – past master, The North Caucasian Institute of mining and metallurgy (State Technological University), ORCID 0000-0002-1314-6151.

Gavrina Oksana Alexandrovna – Ph.D. (Tech.), Associate Professor of the Department of Information Technologies and Systems, The North Caucasian Institute of mining and metallurgy (State Technological University), Russia, ORCID 0000-0002-9712-9075.

Klyuev Roman Vladimirovich – D.Sc. (Tech.), Professor of Technique and technology of mining and oil and gas production department, Moscow Polytechnic University, Russia, ORCID 0000-0003-3777-7203.