Bus network decomposition for fault detection and isolation through power line communication

Karim, Abdel Karim Abdel; Amine, Atoui M.; Dégardin, Virginie; Laly, Pierre; Cocquempot, Vincent

doi:10.1016/j.isatra.2023.01.023

Cited by 4 publications

(1 citation statement)

References 13 publications

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“…Recently, signal-based methods have been proposed. The principle is to inject a dedicated reference signal in the cable and measure either the characteristics of the transmitted signal [3] or the characteristics of the reflected signal [1]. The latter is known as a reflectometry method.…”

Section: Introductionmentioning

confidence: 99%

Fault detection and localization in unshielded twisted pair cable based on observability analysis and reflectometry experimental measurements

Idellette Judith,

Cocquempot,

Degardin

2023

Meas. Sci. Technol.

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In this paper, an efficient method is proposed for detecting and locating a soft fault, i.e. a physical degradation, in a Y -shaped network of unshielded twisted pair cables. The method uses jointly the observability analysis and time-frequency domain reflectometry experimental measurements. The fault detection consists in checking the consistency between the known characteristics of the cable under no-fault and faulty conditions, with the maximum value of a normalized time-frequency crosscorrelation function computed on a sliding time window whose length is equal to the boundary exact observability time. The cable transmission speed and the wired network observability time are combined to locate precisely the fault. Soft faults are artificially created by connecting resistors of different values to the test cable. Experimental results show the efficiency of our fault detection and localization method.

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Section: Introductionmentioning

confidence: 99%