A Fault-location Evaluation Method of a 330 kV Three-Phase Transmission Line by Using Discrete Wavelet Transform
Keywords:
Discrete wavelet transform, fault location estimation, three phase transmission lines protectionAbstract
In this study, discrete wavelet transform (DWT) is utilized for fault-location evaluation in a 330 kV, 50 Hz, three-phase transmission line using pre-fault and post-fault current data of both the terminals of a transmission line. The proposed fault-location method has been extensively tested using the MATLAB model of three-phase transmission line. Characteristics extorted from synchronous recording of three-phase current signals at the two terminals using DWT are used for the estimation of fault location. The efficiency of the proposed method is validated for different types of faults, and with variation in the values of fault location. The simulation results of the proposed work show that the proposed technique is not affected by varying type and location of the fault.
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