Model of Electric Arc Furnace for designing of power quality improvement equipment

This paper is focused on description of complex mathematic model of Electric Arc Furnace (EAF). The mathematical model is designed to develop and test various configurations and propose means to improve the quality of electricity in the industrial network. The advantage of the developed mathematical model is the use of not simplified circuit, which usually lead to not completely correct description of the system. The model consists of two parts. The first sub-section describes the mathematical model linking the arc Cassie model for large currents and the arc Mayer model for small currents. The second is the electrical part that specifies the involvement of EAF furnace transformers and mutual inductance impact of short current paths. Of profits description EAF through a set of differential equations with variable lengths excitation curves. The article then demonstrated results system solutions that show real impact on the quality of electricity.