Framework for Transmission Line Fault Detection in a Five Bus System Using Discrete Wavelet Transform
DOI:
https://doi.org/10.13052/dgaej2156-3306.3737Keywords:
Line fault, Discrete Wavelet Transforms (DWT), Wavelet coef- ficient, five bus system, MATLAB.Abstract
The transmission line is an essential part of the power system and since it
is exposed to the harsh environmental conditions, it is susceptible to open
circuit and short circuit faults. As the occurrence of failures affect the quality
of the electric power supplied, identifying the fault and clearing it quickly is
critical for the reliable power system operation. Fault Diagnostics of a multi
bus system is crucial for Power system stable operation. In this paper, a five-
bus system is taken up for the study and twelve different types of faults with
varying fault durations are applied in transmission lines at different locations.
Then Discrete Wavelet Transform (DWT) is applied to the receiving end
current signals of the line and derived wavelet coefficients are used to identify
the type of fault. Simulation and extraction of wavelet coefficients are done in MATLAB Simulink and results are presented. The Model Developed of a five
Bus system for Fault Diagnostics and Simulation can be used as Framework
for Fault Classification and Localization. The derived Wavelet Transform
proves to be appropriate for the Framework developed.
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