Peculiarities of the reactive power flow in the arc furnace supply circuit with improved electromagnetic compatibility

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Authors:

A. A. Malinovskyi, Dr. Sc. (Tech.), Prof., orcid.org/0000-0001-9765-3494, State Higher Educational Institution Lviv Polytechnic National University, Lviv, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.; This email address is being protected from spambots. You need JavaScript enabled to view it.; This email address is being protected from spambots. You need JavaScript enabled to view it.

V. H. Turkovskyi, Cand. Sc. (Tech.), Assoc. Prof., orcid.org/0000-0003-1869-8139, State Higher Educational Institution Lviv Polytechnic National University, Lviv, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.; This email address is being protected from spambots. You need JavaScript enabled to view it.; This email address is being protected from spambots. You need JavaScript enabled to view it.

A. Z. Muzychak, Cand. Sc. (Tech.), orcid.org/0000-0002-6330-1076, State Higher Educational Institution Lviv Polytechnic National University, Lviv, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.; This email address is being protected from spambots. You need JavaScript enabled to view it.; This email address is being protected from spambots. You need JavaScript enabled to view it.

Yu. V. Turkovskyi, orcid.org/0000-0001-7657-7031, Individual entrepreneur, Lviv, Ukraine

Abstract:

Purpose. To suggest applying a converter with a characteristic of “constant current ‒ constant voltage” for supplying electrical arc furnaces.

Methodology. The MatLab Simulink software with matrix formation of electromagnetic state equations was used to obtain mode parameters for the installation. The averaged mode coordinates t for a certain interval of the furnace operation were calculated by taking into account the stochastic nature of the load based on the theory of probability.

Findings. It is demonstated that the use of the above converter allows choosing the required level of reactive power flow between the electric network and the furnace device and provides constant value of the reactive power flow due to maintaining steady current in operating modes. As a result, the voltage fluctuations are significantly reduced and phase loads are balanced. A possibility to maintain steady reactive power consumption in furnace operating modes and to influence the reactive power volume is shown.

Originality. An approach to the dynamic compensation of the reactive power of an electric arc furnace due to the device with static parameters is found.

Practical value. Applying the “constant current ‒ constant voltage” converter allows optimizing the reactive power use and its costs and improves electromagnetic compatibility of the arc furnace.

References.

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ISSN (print) 2071-2227,
ISSN (online) 2223-2362.
Journal was registered by Ministry of Justice of Ukraine.
Registration number КВ No.17742-6592PR dated April 27, 2011.

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You are here: Home Home EngCat Archive 2019 Contens №2 2019 Electrical ­Complexes and ­Systems Peculiarities of the reactive power flow in the arc furnace supply circuit with improved electromagnetic compatibility