Method and device for detecting electric arc phenomenon on at least one electric cable

An arc phenomenon and cable technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve problems such as cable damage, arcing, and loose connections, and achieve the effects of limiting false alarms and improving reliability

Inactive Publication Date: 2007-08-29
AIRBUS OPERATIONS (SAS)
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

This final stage is one in which discharges of limited intensity propagate along the cable and may lead to partial or total destruction of a bundle of cables due to carbonization of the cable insulation
[0008] In addition to cable insulation degradation, loose connections and cable wear are also prone to arcing

Method used

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  • Method and device for detecting electric arc phenomenon on at least one electric cable
  • Method and device for detecting electric arc phenomenon on at least one electric cable
  • Method and device for detecting electric arc phenomenon on at least one electric cable

Examples

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Embodiment Construction

[0069] The device 1 according to the invention shown schematically in FIG. 1 is intended to detect arcing phenomena on at least one cable 2 forming part of a cable bundle, for example, before arc marking which may lead to partial or complete destruction of the cable bundle, in particular for:

[0070] - Improved security;

[0071] - Consequences of limiting discharges; and

[0072] - If the cables to be monitored are installed on board aircraft, especially passenger aircraft, to protect the integrity of adjacent cables without compromising the availability of the aircraft. In the latter case, the present device 1 is an on-board device.

[0073] The monitored cable 2 can connect a normal load 3 to a current generator 4 in the usual way.

[0074] According to the invention, said device 1 comprises:

[0075] - the acquisition unit 5, connected to said cable 2 via connecting lines 6 and 7;

[0076] - an information processing unit 8 connected to said acquisition unit 5 via a c...

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Abstract

The invention concerns a detecting device (1) comprising a database (10) including a plurality of membership classes, whereof one first class concerns a corona phase, and an assembly (5) comprising means for measuring electric current and electric voltage on an electric cable (2), means for filtering said measurements, and means for digitizing the filtered measurements and forming two digitized data segments, as well as an assembly (8) comprising means for subjecting each of the two segments to a number of functions to constitute a form vector, means for determining the membership class of said form vector, using the database (10), and means for deducing therefrom the presence or absence of an electric arc phenomenon.

Description

technical field [0001] The present invention relates to a method and apparatus for detecting arcing phenomena on a cable, for example a cable as part of a bundle of cables. Background technique [0002] The phenomenon of arcing is known to be the result of slow degradation of the insulation of cables used to distribute AC or DC power due to corrosive environments (moisture in the air, mold, abrasion, vibrations of connection terminals, temperature changes, shearing, etc.). [0003] The arcing phenomenon is divided into four successive phases of increasing energy: [0004] - Corona discharge phase corresponding to the inception of the phenomenon; [0005] - Single alternating conduction phase, corresponding to dielectric breakdown, with increased intensity; [0006] - double alternating conduction phase; and [0007] - Arc Tracking (Arc Tracking in English) stage. This last stage is that of a discharge of limited intensity propagating along the cable, possibly leading to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
CPCG01R31/021G01R31/58
Inventor M·杜托雅G·马泽奥C·弗拉齐克
Owner AIRBUS OPERATIONS (SAS)
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