Open AccessMethod for aligning the load graph powerful induction plants
Author(s) -
A. A. Bazarov,
Alexander I. Danilushkin
Publication year - 2021
Publication title -
vestnik samarskogo gosudarstvennogo tehničeskogo universiteta. seriâ: tehničeskie nauki/vestnik samarskogo gosudarstvennogo tehničeskogo universiteta. seriâ, tehničeskie nauki
Language(s) - English
Resource type - Journals
eISSN - 2712-8938
pISSN - 1991-8542
DOI - 10.14498/tech.2021.4.6
Subject(s) - power factor , power (physics) , converters , transient (computer programming) , voltage , electrical engineering , switched mode power supply , current (fluid) , engineering , electronic engineering , control theory (sociology) , automotive engineering , computer science , physics , control (management) , quantum mechanics , artificial intelligence , operating system
The paper deals with the issues of load balancing in the shop power supply system containing powerful electrothermal installations. There is a cyclical change in load parameters with significant variations in current and power factor during operating multi-section induction installations of methodical action. The largest deviations of these parameters occur in transient modes at heater start or at changing the billets nomenclature. It is shown that when the load changes in starting modes, an increase in power and a decrease in the power factor can lead to unacceptable current overloads of the power supply. Correction during start-up of section currents and power factor allows us to reduce current fluctuations, to provide a smoother power diagram and eliminate power supply overload. It is possible to implement current and power factor correction using semiconductor frequency converters in each section. This approach prevents decreasing the voltage quality indicators and reduces possible deviations of the billets temperature distribution. The parameters of the heater sections in transient modes are calculated. The ranges of power, voltage, current and frequency variation are determined, corresponding to the capabilities of semiconductor frequency converters used in these installations. The proposed start-up algorithm provides the smallest of all possible power fluctuations.