Simulation of Autonomous Direct Current Electric Power System

Abstract

The article presents a model of an autonomous direct current (DC) electric power system with gas turbines, high-speed asynchronous generators with capacitor self-excitation, step-up transformers, rectifiers, smoothing filters, cable power lines and loads. When creating the model, blocks of the Simulink, SimPowerSystems and Foundation Library Mechanical libraries of the MATLAB system were used. It is shown that the rejection of alternating current electric power systems in favor of direct current systems can significantly reduce the weight and size indicators of the electrical part of this system. It has been established that direct current voltage stabilization at the beginning of cable lines is possible by changing the turbine speed by using speed feedback. The curves of transient processes are given, both in the mechanical and electrical parts of the DC electric power system during load surge and operation of the automatic reserve device