Low-voltage power distribution cabinet multi-loop leakage monitoring method and system

CN122193997APending Publication Date: 2026-06-12JIANGSU HARMONY NEW ENERGY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU HARMONY NEW ENERGY TECH CO LTD
Filing Date
2026-05-13
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

In humid or temperature-varying environments, existing low-voltage distribution cabinets struggle to distinguish between recoverable surface leaks caused by condensation and non-recoverable leakage caused by insulation damage in branch circuits. This can easily lead to false alarms, false power outages, and distorted baseline judgments, affecting monitoring accuracy.

Method used

By acquiring temperature and humidity data inside the low-voltage distribution cabinet, the risk of condensation is assessed. Combined with the residual current data of the branch circuits, the characteristics of simultaneous increase in multiple circuits are identified, a candidate event of condensation-type leakage is generated, and environmental adjustment actions are initiated. After confirming that the risk of condensation has been eliminated, the type of leakage is determined.

Benefits of technology

It effectively distinguishes between recoverable condensation leakage events and non-recoverable leakage events, reduces false alarms and power outages, improves monitoring accuracy and fault location accuracy, and takes into account electrical safety.

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Abstract

The application discloses a kind of low-voltage distribution cabinet multi-loop electric leakage monitoring method and system, it is related to low-voltage distribution safety monitoring field.The method obtains the residual current data of multiple branch circuits in low-voltage distribution cabinet and temperature, humidity data in cabinet, according to temperature and humidity data to determine the condensation risk state in cabinet, and establish or update the historical electric leakage baseline of each branch circuit;When cabinet meets condensation risk condition and multiple branch circuits exist electric leakage increment synchronous rising characteristics, generate condensation type electric leakage candidate event, and start environmental regulation action;After condensation risk elimination, according to the degree of fall and the fall synchronous relationship of each branch circuit residual current before and after environmental regulation, identify recoverable condensation type electric leakage event or non-recoverable electric leakage event, and output electric leakage type, abnormal loop information and hierarchical warning information.The application can distinguish condensation, recoverable electric leakage caused by damp and non-recoverable electric leakage caused by insulation deterioration, reduce false alarm and misoperation.
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