A GIS Defect Detection Method and System Based on Adaptive X-ray Intensity Control

The GIS defect detection method based on adaptive X-ray intensity control solves the problem of insufficient sensitivity in GIS equipment defect detection, realizes the active identification and precise location of latent defects, and provides an intelligent detection solution.

CN122017503BActive Publication Date: 2026-07-17NANCHANG POWER SUPPLY BRANCH OF STATE GRID JIANGXI ELECTRIC POWER CO LTD +4
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Patent Information

Application Number
CN202610476117.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2026-04-13
Publication Date
2026-07-17
Estimated Expiration
2046-04-13

AI Technical Summary

Technical Problem

Existing GIS equipment defect detection methods lack sensitivity, are passive in defect identification, and have weak proactive control capabilities over defect characteristics, failing to meet the needs of intelligent operation and maintenance for accurate prediction of equipment status.

Method used

An X-ray intensity adaptive control method is adopted. By constructing a closed-loop adaptive control process, a multi-modal intelligent switching strategy integrating radiation safety priority control, enhanced excitation mode and optimized adjustment mode is integrated to dynamically adjust the X-ray intensity. Precise control is achieved by combining a proportional-integral controller, the fourth-order Runge-Kutta method and the Adams prediction-correction method, and the time difference method is used to identify the defect location.

Benefits of technology

This technology enables the proactive activation of latent defects while ensuring radiation safety, significantly improving the ability to identify early insulation defects in GIS equipment and providing an intelligent, highly sensitive, and highly safe detection solution.

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Abstract

This invention discloses a GIS defect detection method and system based on adaptive X-ray intensity control. The method initiates a closed-loop adaptive control process by inputting device parameters and safety thresholds. This process prioritizes radiation safety and intelligently switches to an enhanced excitation mode or an optimized adjustment mode based on the real-time detected partial discharge signal intensity to dynamically update the X-ray intensity, thereby effectively exciting latent defects or finding the optimal operating point. Control is completed when both signal and intensity changes meet convergence conditions. Subsequently, based on the discharge signal excited by the optimal intensity, the defect type and location are automatically determined. This invention overcomes the limitations of traditional fixed-dose methods, significantly improves the sensitivity of early defect detection, and achieves an optimal balance between radiation safety and detection efficiency.
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