Discrete wavelet transform approach for accurate fault diagnosis in three phase power system
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Date
2026-06
Journal Title
Journal ISSN
Volume Title
Publisher
AIKTC
Abstract
This 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,