Electrical power system studies for the Electrical Engineering career using DIgSILENT Power
Keywords:
electrical power systems, power flow, Newton-Raphson method, MATLAB, engineering educationAbstract
Digital simulation of electrical power systems (EPS) is a fundamental competency in the education of electrical engineers. This article presents a technical study of power systems using DIgSILENT Power Factory 13.1 software, focusing on the theoretical foundations of transmission lines, power flows, short circuits, protections, and stability (small signal and transient). A computational implementation of the Newton-Raphson method for power flow analysis in a three-bus system is developed using MATLAB as a calculation tool. The study includes: (1) mathematical formulation of network equations using the nodal admittance matrix, (2) Jacobian derivation from first principles, (3) implementation of the iterative algorithm in MATLAB, and (4) results verification. The obtained results demonstrate that combining Power Factory for professional simulation and MATLAB for algorithmic implementation allows understanding of the underlying iterative processes of EPS analysis. The study has implications for teaching power flows in Electrical Engineering programs, providing a bridge between mathematical theory and industrial simulation tools.
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