System and method for detecting an electric arc
AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsIbrahima Djigo, Mikael Carmona, Vincent Heiries
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Abstract
The invention concerns a method and a system for detecting an electric arc in an electrical installation (7) equipped with at least one sensor (5) capable of detecting temporal acoustic signals produced by the electrical installation (7), said method being characterised in that it comprises a device for analysis (3) configured to analyse any temporal acoustic signal (5) coming from said one or more sensors (5) by associating with said acoustic signal a corresponding parsimony measurement (m) whose value indicates whether the acoustic signal is an electrical arc signature or not.
Claims11
A system for detecting an electric arc in an electrical installation equipped with at least one sensor configured to detect temporal acoustic signals produced by the electrical installation, said system comprising:
- an analysis device configured to
- analyze a temporal acoustic signal (S) coming from said at least one sensor by associating with said temporal acoustic signal a corresponding parsimony measurement (m), a value of the parsimony measurement indicating whether or not the temporal acoustic signal is a signature of an electric arc,
- determine said parsimony measurement by sampling said temporal acoustic signal to form a sampled signal f, compressing the sampled signal to form a compressed signal and reconstructing the sampled signal from said compressed signal, and
- trigger an alarm when the value of the parsimony measurement indicates that the temporal signal is a signature of an electric arc,
- wherein the compressed signal is generated by iteratively multiplying the sampled signal at each current iteration with an acquisition matrix which differs at each iteration.
A method for detecting an electric arc in an electrical installation equipped with at least one sensor configured to detect temporal acoustic signals produced by the electrical installation, said method comprising:
- analyzing a temporal acoustic signal coming from said at least one sensor by associating with said temporal acoustic signal a corresponding parsimony measurement, a value of the parsimony measurement indicating whether or not the temporal acoustic signal is a signature of an electric arc;
- and
- triggering an alarm when the value of the parsimony measurement indicates that the temporal signal is a signature of an electric arc,
- wherein said analyzing comprises forming a sampled signal by sampling of said temporal acoustic signal, forming a compressed signal by compressing the sampled signal, and reconstructing the sampled signal from said compressed signal, and
- the compressed signal is generated by iteratively multiplying the sampled signal at each current iteration with an acquisition matrix which differs at each iteration.
Dependencies are inferred from the claim text.