Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A Method for Detecting the Aging Degree of Cable Joints Based on Wave Impedance

A technology of cable joints and aging degree, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve the problems of troublesome on-site inspection, heavy equipment, and untargeted cable joints, and achieve the effect of preventing failures and avoiding losses

Active Publication Date: 2018-01-05
SOUTH CHINA UNIV OF TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the equipment required by these methods is cumbersome, and on-site detection is troublesome, and only a section of cable can be measured, and there is no specificity for cable joints.

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
  • A Method for Detecting the Aging Degree of Cable Joints Based on Wave Impedance
  • A Method for Detecting the Aging Degree of Cable Joints Based on Wave Impedance
  • A Method for Detecting the Aging Degree of Cable Joints Based on Wave Impedance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] In this embodiment, in order to detect the aging degree of the cable joint, a signal generator is connected to one end of the cable to be detected, the signal generator is used to emit an incident wave, and a computer is also connected to the same end of the cable to be detected, The computer is used to collect the reflected wave reflected by the cable joint, and obtain the wave impedance of the cable joint according to the amplitude of the reflected wave, and compare the current wave impedance with the wave impedance of the newly produced cable joint to obtain the aging degree of the current cable joint .

[0027] According to the analysis of traveling wave theory, the incident traveling wave will be reflected and refracted at nodes with different wave impedances, such as figure 2 shown. In addition, due to the distance l between the signal generator access point and the cable connector 0 is shorter, so the attenuation of the signal wave and the change of the wavefo...

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 discloses a method for detecting the aging degree of a cable joint based on wave impedance. The cable joint will reflect back a reflected wave, collect the reflected wave, and obtain the wave impedance of the cable joint according to the amplitude of the reflected wave; compare the current wave impedance with the wave impedance of the newly produced cable joint, and obtain the current wave impedance of the cable joint. degree of aging. The method of the invention can simply and effectively detect the running state of the cable joint, determine its aging degree, thereby judging whether it needs to be replaced, and preventing the occurrence of failure.

Description

technical field [0001] The invention relates to the field of cable joint detection research, in particular to a method for detecting the aging degree of a cable joint based on wave impedance. Background technique [0002] At present, there are relatively few methods for separately detecting the aging degree of cable joints, and most of them are to predict the remaining life of a whole section of cable body or cables including joints. At present, there are several test methods for evaluating the remaining life of cables: breakdown voltage comparison method, dielectric loss factor method, DC leakage current method, etc. However, the equipment required by these methods is cumbersome, and on-site detection is cumbersome, and only a section of cable can be measured, and the cable joint is not targeted. [0003] Therefore, it is of great significance to study a method that can test the aging degree of cable joints with simple equipment and easy operation. Contents of the invent...

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 Patents(China)
IPC IPC(8): G01R31/00
Inventor 刘刚柯康观
Owner SOUTH CHINA UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com