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GIS (gas insulated switchgear) interior visual recognition method based on pulse rays as well as device adopting method

An identification method and pulse technology, applied in the direction of using radiation for material analysis and testing dielectric strength, etc., can solve the problems of wasting time, staggering economic losses, and slowly increasing failure rate of GIS equipment, so as to improve scientificity and reduce blindness effect

Inactive Publication Date: 2015-05-27
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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Problems solved by technology

[0003] However, in recent years, with the continuous increase of the voltage level and installed capacity of the power grid, the failure rate of GIS equipment has gradually increased
Once the fully enclosed GIS equipment breaks down, the difficulty of maintenance can be imagined. Power outage maintenance is not only a waste of time, but also a staggering amount of economic losses during the maintenance period

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  • GIS (gas insulated switchgear) interior visual recognition method based on pulse rays as well as device adopting method
  • GIS (gas insulated switchgear) interior visual recognition method based on pulse rays as well as device adopting method
  • GIS (gas insulated switchgear) interior visual recognition method based on pulse rays as well as device adopting method

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Embodiment Construction

[0029] A. Perform partial discharge detection on GIS equipment (hereinafter referred to as partial discharge), extract the detected partial discharge data from the map features, analyze the data, and determine the approximate location of the defect;

[0030] B. Use the pulsed X-ray digital imaging detection system to apply pulsed X-ray irradiation to the abnormal partial discharge area to form a visual transillumination picture and perform feature extraction;

[0031] C. Carry out a similarity analysis between the spectral features of the extracted partial discharge data and the preset spectral features, and at the same time, perform a similarity analysis on the features of the visualized transmission picture obtained by the pulsed X-ray imaging system and the preset X-ray transmission picture features ;

[0032] D. Analyze the similarity results to determine the location and nature of GIS equipment defects.

[0033] Step A of the present invention adopts ultrasonic or ultra-...

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Abstract

A GIS (gas insulated switchgear) interior visual recognition method based on pulse rays comprises steps as follows: A, performing partial discharge detection on GIS, performing map feature extraction on detected partial discharge data, analyzing the data, and determining general positions of defects; B, irradiating partial discharge detection abnormal areas with pulse X-rays through a pulse X-ray digital imaging detection system to form visual trans-illumination pictures, and performing feature extraction; and the like. The method has the benefits as follows: when nondestructive testing is performed on the GIS with the pulse X-rays, visual recognition of positions and properties of interior defects of the GIS can be realized, the blindness of detection of the defects of the GIS by electric power system staff is reduced greatly, and the scientificity, the high efficiency and the accuracy of detection and diagnosis of the interior defects of the GIS are improved.

Description

technical field [0001] The invention relates to a method for detecting internal defects of electric power equipment, in particular to a method for visually identifying internal GIS equipment based on pulse rays. Background technique [0002] In the electric power industry, GIS refers to sulfur hexafluoride enclosed combined electrical appliances, known internationally as "Gas Insulated Switchgear" (Gas Insulated Switchgear), referred to as GIS, which combines primary equipment other than transformers in a substation , including circuit breakers, isolating switches, grounding switches, voltage transformers, current transformers, surge arresters, busbars, cable terminals, inlet and outlet bushings, etc., are organically combined into a whole through optimized design. The advantages of GIS are obvious. Its compact layout and fully enclosed live parts greatly reduce the footprint of the substation. [0003] However, in recent years, with the continuous increase of the voltage l...

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Application Information

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IPC IPC(8): G01R31/12G01N23/04
Inventor 刘冠辰刘荣海吴章勤艾川杨迎春徐辉潘堉祺
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST