en Distribution Systems Modeling Distribution Systems Modeling Only For Articles of ELECRiS 2024 Only For Articles of ELECRiS 2024 <a name="_Hlk187785260"><span lang="EN-MY" style="font-size:10.0pt"><span new="" roman="" style="font-family:" times="">The rise of nonlinear and unbalanced loads in modern electrical systems poses challenges to power quality management. These loads, prevalent in electronic devices and industrial equipment, induce harmonic distortions and unbalance, adversely affecting the neutral conductor in three-phase systems. This study investigates these effects through modeling and simulation using MATLAB/Simulink and symmetrical components theory for detailed power quality analysis. The research focuses on three scenarios: nonlinear loads, unbalanced loads, and combined nonlinear-unbalanced loads. Simulation results show that nonlinear loads significantly increase harmonic content, while unbalanced loads lead to notable power quality deviations. When combined, these conditions exacerbate harmonic distortions and unbalance, resulting in higher neutral current magnitudes. Key findings highlight the severe impact of combined load conditions on the neutral conductor, emphasizing the need for accurate modeling and analysis. This research provides valuable insights and practical recommendations for addressing the challenges of nonlinear and unbalanced loads, contributing to improved power system design and management.</span></span></a> Power Quality, Unbalanced Load, Nonlinear Load, neutral Current 163 172 http://ijeee.iust.ac.ir/browse.php?a_code=A-10-5465-3&slc_lang=en&sid=1 Mohd Zulhisham Mohd Radzi mzulhisham@unimap.edu.my 1800319475328460016521 1800319475328460016521 No Faculty of Electrical Engineering & Technology, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia. Baharuddin Ismail baha@unimap.edu.my 1800319475328460016522 1800319475328460016522 Yes Faculty of Electrical Engineering & Technology, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia. Muhammad Mokhzaini Azizan mokhzainiazizan@usim.edu.my 1800319475328460016523 1800319475328460016523 No Department of Electrical & Electronic Engineering, Faculty of Engineering and Build Environment, Universiti Sains Islam Malaysia, Bandar Baru Nilai, 71800 Nilai, Negeri Sembilan, Malaysia