Fault Location Method of Multi-Terminal Transmission Line Based on Fault Branch Judgment Matrix

Aiming at the difficulty of fault location multi-source transmission lines, this paper proposes a method for multi-terminal lines based on branch judgment matrix. The traveling wave signal is decomposed by Complete Ensemble Empirical Mode Decomposition with Adaptive Noise (CEEMDAN), and IMFs sensitive components that can characterize characteristics target signals are selected constructing correlation-rearrangement entropy function. arrival time endpoint has been accurately calibrated combining them Teager Energy Operator (TEO). To eliminate influence velocity results, two-terminal line mode component to improve accuracy. On basis, combined matrix, accurate faults realized. This shown have high accuracy in detecting heads, judging branches, producing small error results. Compared existing algorithm, it obvious advantages meets needs actual working conditions.