Fourier Transform-Based Wavelet Approach for D-STATCOM Compensated Distribution Networks Fault Detection and Fault Time Computation

For best execution of resources in distribution networks, classification of faults at its occurrence is very fundamental. A hybrid approach that combines Fourier transform (FT) and wavelet transform (WT) for finding of faults, classification of phase type, and computation of fault time of distribution-static synchronous compensator (D-STATCOM) compensated distribution network is presented in this paper. In this presented strategy, the measured current signals are analyzed using FT with an outlook to removing useful characteristics. In order to detect fault the removed characteristics are then fetched to WT. The presented approach is implemented in D-STATCOM connected distribution network modeled and simulated in MATLAB environment. Presented approach is also competent to differentiate the faults during different fault and non-fault events. Simulation results exhibit the effectiveness and robustness of the presented approach with correct process of the proposed relaying scheme.