A faulty feeder selection method for distribution network with unintentional resonance in zero sequence circuit

Atsever, Mert Bekir; Hocaoğlu, Mehmet Hakan

doi:10.1016/j.epsr.2023.109587

Cited by 6 publications

(1 citation statement)

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“…A line selection strategy is proposed [6] for grounding faults based on the correlation of injected signal waveforms, employing the Pearson correlation coefficient to assess the correlation between the normalized zero-mode current of each feeder and the total normalized zero-mode current. A technique for selecting fault feeders is proposed [7] based on transient negative sequence current, while an innovative approach is presented [8] to fault feeder selection with zero-sequence voltage and current angle. An ideal scenario's transient zero-sequence voltage/current characteristics at line breaking and grounding are initially examined [9], contrasting the electrical parameters between line-to-ground faults in a single-phase and standard single-phase grounding fault.…”

Section: Introductionmentioning

confidence: 99%

Fault line selection algorithm for single-phase grounding faults in distribution networks based on multi-feature fusion of multi-level wavelet decomposition coefficients

Li,

Wu,

Gao

2024

J. Phys.: Conf. Ser.

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This paper introduces a novel method for determining fault lines, addressing the time-consuming nature of traditional steady-state quantity methods and the susceptibility to errors in transient quantity methods. A multi-feature fusion technique, involving multi-level wavelet decomposition coefficients, is employed. This involves the extraction of zero-sequence current wavelet transform coefficients with the Discrete Wavelet Transform (DWT), and the formation of a similarity function through the S-transform. Subsequently, an energy measure function is derived by integrating these coefficients. A function representing faultiness, aligned with various fault lines, is then developed and used as the primary criterion for identifying the faulted line. Simulation data from a single-phase grounding fault model in a distribution network confirms the efficacy of the method in choosing fault lines.

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Section: Introductionmentioning

confidence: 99%