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1. (WO2017148753) METHOD FOR DETECTING SOFT FAULTS IN A CABLE, WHICH METHOD IS BASED ON THE INTEGRAL OF A REFLECTOGRAM

Pub. No.:    WO/2017/148753    International Application No.:    PCT/EP2017/053973
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Thu Feb 23 00:59:59 CET 2017
IPC: G01R 31/11
Applicants: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Inventors: INCARBONE, Luca
GALLEGO ROMAN, Miguel
Title: METHOD FOR DETECTING SOFT FAULTS IN A CABLE, WHICH METHOD IS BASED ON THE INTEGRAL OF A REFLECTOGRAM
Abstract:
Method for detecting soft faults in a transmission line (L) comprising the steps of: acquiring (301) a time-domain reflectogram; calculating (302) the integral (INT) of the time-domain reflectogram; selecting (303), in the integral (INT), three samples P1, P2, P3; calculating (304) a first distance equal to the difference in absolute value between the value of the second sample P2 and the value of the first sample P1 or the third sample P3; calculating (305) a second distance equal to the difference in absolute value between the value of the first sample P1 and the third sample P3; comparing (307) the first distance to the second distance weighted by a weighting coefficient β; and deducing from the result of the first comparison (307) information on the existence of a soft fault.