Fault Analysis in Three Phase Long Transmission Lines using Wavelet Transform

Fault classification require an analysis and identification of the type of fault on a transmission line. The discrete wavelet transform is employed to identify the fault type and identify the fault's occurrence phase. During a fault, the current waveform is utilized to identify the fault. This paper presents a simple fault detection mechanism that can be applied to computer relaying applications. To produce fault signals, a simulation is conducted using MATLAB Simulink. This paper presents an algorithm that can detect fault at any location throughout the transmission line along with the change of the load parameters. This algorithm is also capable of fault classification and detection of faulted phase.