Tadkod, Akshata [Guide]Ansari, Abdul Bari [22EE07]Sayyed, Arbaaz [22EE12]Khan, Mohammed Ruman [22EE20]Shaikh, Zulkhairnain [22EE37]2026-09-032026-09-032026-06http://aiktc.ndl.gov.in/handle/123456789/4622This project presents the modeling and simulation of a transmission line system for fault detection using MATLAB Simulink. A 5-bus power system network is developed, consisting of a slack bus, multiple load buses, and interconnected transmission lines operating at 11 kV. The system is analyzed under normal and fault conditions to study the behavior of voltages and currents. Different types of faults such as line-to-line (L–L) and line-toground (L–G) faults are introduced at various buses using fault blocks. The impact of these faults on system parameters like current magnitude, voltage drop, and power flow is observed. Voltage and current measurement blocks are used to monitor real-time system performance. The results show that fault currents increase significantly during faults and vary depending on fault type and location. Line-to-ground faults produce unbalanced currents, while line-to-line faults affect multiple phases simultaneously. The simulation helps in understanding fault characteristics and provides a basis for designing protection schemes in power systems. This project demonstrates the effectiveness of simulation tools in analyzing transmission line faults and enhances understanding of power system stability and protection mechanisms. Keywords: Discrete Wavelet Transform (DWT), Fault Detection, item Transmission Line, MATLAB Simulink, 5 Bus System, Wavelet Coefficients, Current Signal Analysis, Transient Analysis,en-USProject Report