CALCULATION OF SHORT-CIRCUIT CURRENTS IN THE POWER SUPPLY SYSTEM OF AN INDUSTRIAL ENTERPRISE WORKSHOP USING MATLAB SIMULINK MODELING

Abstract

The article presents the results of the implementation of modern information technologies of modeling in the MATLAB Simulink environment to determine the magnitude of short-circuit currents when developing a power supply system of an industrial enterprise in the educational process of training specialists of the first (bachelor's) level of education in the specialty G3. Electrical Engineering (141. Electric Power, Electrical Engineering and Electromechanics) at the Kherson National Technical University. Using the example of the power supply system of a welding shop of a heavy engineering plant, it is shown that the study of short circuits in the power supply system of a shop of an industrial enterprise is the main stage of developing an optimal electrical network. In the MATLAB Simulink environment, the normal operation mode of the plant's power supply system and the simulation of emergency short-circuit modes, which lead to an increase in current in the network elements, were simulated. The results of the analytical calculation of short-circuit currents in the network up to 1 kV and the simulation in the MATLAB Simulink environment were compared. The obtained results confirmed the correctness of the calculation taking into account the permissible approximations. The study showed that the use of MATLAB Simulink in course design for the educational component "Power Supply" allowed students to find more rational technical solutions to specific problems when developing an optimal power supply system, and accordingly improve the quality of course work. It is noted that the use of CAD elements and modern modeling tools in the educational process when training specialists in the specialty G3. Electrical Engineering (141. Electric Power, Electrical Engineering and Electromechanics) improves the professional skills of students and increases competitiveness in the labor market.