An electrical power distribution cabinet leakage detection system and method

By combining the evaluation of electric field sensing array and magnetic field sensing array, and using temperature and vibration field verification of distributed optical fiber, and utilizing time-domain reversal and electromagnetic propagation models, reliable confirmation and accurate location of leakage events in power distribution cabinets were achieved, solving the problem of inaccurate leakage point location in existing technologies.

CN122345813APending Publication Date: 2026-07-07安徽德源智能电气有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
安徽德源智能电气有限公司
Filing Date
2026-06-09
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing technologies make it difficult to reliably confirm and accurately locate leakage events inside distribution cabinets, especially in cases of complex multipath propagation and the presence of interference sources, making it impossible to simultaneously and accurately locate the leakage point.

Method used

By combining the joint evaluation of electric field sensing array and magnetic field sensing array, and using distributed optical fiber to verify the temperature field and vibration field, reverse propagation is performed using time-domain reversal and electromagnetic propagation models. Combined with the spatial overlap constraint of the electric field and magnetic field focusing areas, the precise location of leakage current can be achieved.

Benefits of technology

It improves the reliability and accuracy of leakage current detection, overcomes the positioning error caused by multipath effect, and ensures accurate positioning results of leakage current point.

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Abstract

The application discloses an electric power distribution cabinet electric leakage detection system and method, belongs to the field of intelligent detection, data processing and safety technology, and through joint optimization of electric field and magnetic field transient signals, distinguishes real electric leakage from interference and avoids false positives. Combined with the event authenticity verification of the temperature field and the vibration field of the distributed optical fiber, the reliability of the electric leakage event is ensured. Using the time domain reversal technology in the electromagnetic propagation model considering the internal metal components of the power distribution cabinet, through the spatial coincidence constraint of the electric field and magnetic field focusing area, the positioning error caused by the multipath effect is overcome, and the accurate positioning of the electric leakage point is realized. Through the physical consistency verification of the electromagnetic positioning result and the cumulative physical field characteristics of the distributed optical fiber, the reliability and accuracy of the electric leakage positioning result are improved.
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