This study proposes a protection relay using a microcontroller to detect and classify faults in transmission lines based on the wavelet transform. nsform with differential protection scheme. The current signal was observed based on the fault type. Abstract— This paper gives a review of the use of wavelet transform for protection of transmission line. For a modern power system, selective high speed clearance of faults on excessive voltage transmission line is essential and this review indicates the efficient and promising implementations for. This paper presents the novel approach in protection and detection techniques of Alternator stator winding from the earth faults which are simulated between 2% to 10% distance point from the alternator neutral, since the impedence at that distance is very high we can not detect or protect by normal.
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