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Signal segmentation of fault records based on Empirical Mode Decomposition

This paper describes an application of the Empirical Mode Decomposition (EMD) technique in signal segmentation of fault records. The segmentation is important pre-processing step required for automated analysis of data recorded during faults on transmission lines. The proposed technique achieves reliable and automated segmentation of three-phase voltage and current signals in pre-fault, fault and fault-cleared stationary signal segments. The proposed EMD segmentation technique has been tested using practical disturbance records and representative results are presented in this paper.