Abstract: (100 Views)
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.
Type of Study:
Research Paper |
Subject:
Electromagnetic Transients Modeling and Calculation Received: 2025/08/02 | Revised: 2026/05/10 | Accepted: 2026/01/30