Method for visually and intelligently identifying internal defects of GIS (Geographic Information System) equipment

A technology of internal defect and intelligent identification, applied in the direction of material analysis using radiation, can solve problems such as difficult to predict, fall off, identify nature and position, and achieve the effect of improving scientificity

Inactive Publication Date: 2011-11-02
云南电力试验研究院(集团)有限公司
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Problems solved by technology

[0003] During the manufacturing, installation and operation of GIS equipment, there may be defects such as parts loosening, falling off, omission, deformation, etc., but it is difficult to predict
The harbinger and main manifestation of the internal defects of GIS equipment is often partial discharge, and partial discharge is the cause of insulation deterioration. Its continuous development will lead to accidents and cause losses to the power grid
[0004] At present, partial discharge detection for GIS equipment is mainly divided into electrical measurement method and non-electrical measurement method. Electrical measurement method mainly includes pulse current method and external electrode method, and non-electrical measurement method mainly includes ultrasonic detection method and ultra-high frequency detection method. , none of these partial discharge detection methods can completely determine whether there are defects inside the GIS equipment, nor can it intuitively, visually and intelligently determine and identify the nature and location of the internal defects of the GIS equipment

Method used

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  • Method for visually and intelligently identifying internal defects of GIS (Geographic Information System) equipment
  • Method for visually and intelligently identifying internal defects of GIS (Geographic Information System) equipment
  • Method for visually and intelligently identifying internal defects of GIS (Geographic Information System) equipment

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Embodiment Construction

[0030] The method for visual intelligent identification of internal defects of GIS equipment according to the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] The flow of the method of visual intelligent identification of internal defects of GIS equipment is as follows: figure 1 shown. The method comprises the steps of:

[0032] A. Detection of partial discharge source on GIS equipment;

[0033] B. Perform spectral feature extraction on the detected partial discharge source data;

[0034] C. Use the X-ray digital imaging detection system to visually image the area of ​​the partial discharge source and form an X-ray transillumination picture;

[0035] D. Carry out feature extraction from the X-ray transillumination pictures obtained by the X-ray digital imaging detection system;

[0036] E. Retrieve the similarity between the spectral features of the obtained partial discharge source data and the features of the X-r...

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Abstract

The invention relates to a method for detecting internal defects of power equipment, in particular to a method for visually and intelligently identifying internal defects of GIS (Geographic Information System) equipment. The method for visually and intelligently identifying internal defects of the GIS equipment comprises the following steps of: A, detecting a local discharge source of the GIS equipment; B, extracting map characteristics of detected local discharge source data; C, performing visual imaging on a local discharge source area to form an X-ray transillumination picture; D, performing characteristic extraction on the X-ray transillumination picture obtained by using an X-ray digital imaging detection system; E, performing similarity retrieval; and F, determining the properties and positions of internal defects of the GIS equipment according to a similarity retrieval result. According to the method, the properties and positions of the internal defects of the GIS equipment can be identified visually and intelligently, and the scientificity, efficiency and accuracy of the detection and diagnosis of the internal defects of the GIS equipment are increased.

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 and intelligently identifying internal defects of GIS equipment. Background technique [0002] Gas-insulated switchgear (GIS) is an important device in the power system. As the voltage level and capacity of the power grid continue to increase, the failure rate of GIS equipment also increases. GIS equipment is a fully enclosed composite structure equipment. Once a failure occurs, the maintenance time will be longer, and the impact and loss will be great. Therefore, the stable and reliable operation of GIS equipment is of great significance to the safety and stability of the power system. [0003] During the manufacturing, installation, and operation of GIS equipment, there may be defects such as parts loosening, falling off, omission, deformation, etc., but it is difficult to predict. The harbinger and main manifestation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/04
Inventor 于虹魏杰王达达赵现平吴章勤况华张少泉王科蔡晓兰薛飞
Owner 云南电力试验研究院(集团)有限公司
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