en Electromagnetic Transients Modeling and Calculation Electromagnetic Transients Modeling and Calculation Research Paper Research Paper <span style="font-size:10.0pt"><span style="font-family:&quot;Times New Roman&quot;,serif">This study investigates overvoltages transmitted through low-voltage (LV) networks, which pose a significant risk to sensitive electronic devices. High-frequency component models of the LV network are employed to analyze overvoltages propagating through LV distribution transformers. To efficiently assess these transients, the Monte Carlo method is applied, enabling a focused analysis within a constrained simulation domain while reducing computational time. Furthermore, a protective algorithm is proposed to safeguard LV networks and connected loads against lightning-induced overvoltages. The study also evaluates the influence of significant mitigation measures, including spark-gap-based protection and the installation of surge protective devices (SPDs), on overvoltage suppression in LV distribution systems. Finally, the effects of lightning strikes on the load-side lightning protection system (LPS) and the resulting induced overvoltages in the LV network are investigated. The proposed network and its components are simulated using both MATLAB and ATP-EMTP to ensure comprehensive analysis. In addition to the computational efficiency achieved through the enhanced Monte Carlo method, the proposed methodology offers a practical and effective approach for improving overvoltage protection in LV distribution networks.</span></span> Distribution network, transformer modelling, lightning overvoltages, Monte Carlo method. 4071 4071 http://ijeee.iust.ac.ir/browse.php?a_code=A-10-1724-5&slc_lang=en&sid=1 Peyman Gholami peyman.gh18@gmail.com 1800319475328460017636 1800319475328460017636 No Faculty of Electrical and Computer Engineering, University of Science and Technology of Mazandaran, Behshahr, Iran. Nabiollah Ramezani ramezani@mazust.ac.ir 1800319475328460017637 1800319475328460017637 Yes Faculty of Electrical and Computer Engineering, University of Science and Technology of Mazandaran, Behshahr, Iran. Faridoddin Safaei farid.safaeii@yahoo.com 1800319475328460017638 1800319475328460017638 No Faculty of Electrical and Computer Engineering, University of Science and Technology of Mazandaran, Behshahr, Iran.