Journal of Research in Electrical Circuits and Systems ISSN: 3139-2059 (Online)

Authors: K. Aravind, D. Nithya

Abstract: Electrical distribution systems deliver power from substations to consumers while maintaining reliability, efficiency, and power quality. Accurate modeling and
simulation are essential for planning, fault analysis, voltage regulation, and integration of distributed energy resources. This paper presents a comprehensive study of modeling
techniques for radial, loop, and networked distribution systems, including load modeling, feeder modeling, and transformer representation. Simulation methodologies
using software tools such as MATLAB/Simulink and DIgSILENT PowerFactory are discussed. Two-dimensional figures, tables of parameters, and case studies illustrate
performance evaluation and optimization. The paper serves as a guide for engineers and researchers in power system design, operation, and analysis.

Keywords: Electrical distribution systems, modeling, simulation, load flow, voltage profile, reliability, power quality.