Method for automatically identifying hydrophobic grades of composite insulators

A technology of composite insulators and hydrophobic grades, applied in character and pattern recognition, image data processing, instruments, etc., can solve problems such as errors and difficulties in implementation, and achieve the effects of smooth noise removal, overall contrast improvement, and dynamic range increase

Inactive Publication Date: 2013-12-11
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
View PDF2 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The results show that these methods can overcome the influence of subjective factors on the determination of hydrophobic grades to a certain extent, but there are also some shortcomings. For example, the improved shape factor method uses the shape factor of the largest water droplet and the area ratio of the largest water droplet to the entire image as the The characteristic quantity, the hydrophobic grade of the composite insulator is obtained by comparing the quantitative relationship between these two characteristic quantities and the hydrophobicity grade, but there is no linear relationship between these two characteristic quantities and the hydrophobicity grade, according to the quantitative relationship given by this method There are often errors in determining the hydrophobic state of insulators; the hydrophobic images of composite insulators vary widely, and SVM decision trees are difficult to implement for large-scale sample training

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for automatically identifying hydrophobic grades of composite insulators
  • Method for automatically identifying hydrophobic grades of composite insulators
  • Method for automatically identifying hydrophobic grades of composite insulators

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0063] The present invention proposes an automatic recognition method for composite insulator hydrophobicity grade. By analyzing the composite insulator hydrophobicity image, a neural network recognition model is established to realize automatic recognition of composite insulator hydrophobicity grade. The following describes the method in combination with the drawings and embodiments The invention is explained.

[0064] Case 1

[0065] Select an insulator that has been in operation for many years, and use histogram equalization and adaptive histogram equalization to enhance the image respectively. The enhancement effect is as follows: figure 1 shown. From figure 1 Comparing the original image in a, b. histogram equalized image, and c adaptive histogram equalized image, it can be seen that the contrast of the image processed by c adaptive histogram equalized is significantly improved, and many details are more clearly displayed; b. Although the contrast of the image processe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the technical field of detection of performance of electric transmission line insulators, and discloses a method for automatically identifying hydrophobic grades of composite insulators. The method includes the steps of image enhancement, image filtering, image segmentation, image feature quantity extraction, neural network identification model establishment and the like. By analyzing hydrophobic images of the composite insulators, automatic identification of the hydrophobic grades of the composite insulators is achieved. Human factor influences are eliminated, the method is high in accuracy of the judgment result, easy to operate and capable of automatically identifying the hydrophobic grades of the insulators different in voltage grade, type, manufacturer, foul degree grade, operation age limit and the like.

Description

technical field [0001] The invention belongs to the technical field of performance detection of transmission line insulators, and in particular relates to an automatic identification method for the hydrophobic level of composite insulators. Background technique [0002] Silicone rubber composite insulators are widely used in the external insulation of transmission lines due to their excellent anti-pollution flashover performance, and their excellent anti-pollution flashover performance is mainly due to their own hydrophobicity and hydrophobic migration. However, the actual operation experience shows that due to the influence of factors such as operating years, electric field, ultraviolet rays, and pollution, the hydrophobicity of the composite insulator silicone rubber umbrella group will gradually decrease, or even completely lose, resulting in the decline in the anti-pollution flashover performance of the composite insulator and the pollution of transmission lines. A flash...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G06K9/60G06T5/40
Inventor 汪佛池张重远闫康
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap