Accurate Extraction Method of Fault Traveling Wave Head for Complex Distribution Network with Distributed Power Supply

Aiming at the difficulty of extracting fault traveling wave fronts in complex distribution networks, this paper proposes a precise extraction method based on MRSVD-ICEEMDAN-CSSTEO. The MRSVD algorithm is employed to rapidly and effectively eliminate harmonic interference. For signal decomposition, an improved Complete Ensemble Empirical Mode Decomposition with Adaptive Noise (ICEEMDAN) is developed by introducing Dynamic Time Warping (DTW) to evaluate the correlation between intrinsic mode function (IMF) groups, thereby suppressing pseudo-modal phenomena. In terms of wavefront detection, a Cubic Spline Smoothed Teager Energy Operator (CSSTEO) is proposed to enhance the traditional TEO. By integrating cubic spline interpolation, the influence of external noise on wavefront detection accuracy is minimized, enabling precise capture of fault traveling wave fronts.