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

Cable defect positioning method and equipment

A defect location and defect technology, applied in the field of cable defect location methods and equipment, can solve problems such as inaccurate location

Pending Publication Date: 2021-11-12
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present application provides a cable defect location method and equipment to solve the technical problem of inaccurate cable defect location

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
  • Cable defect positioning method and equipment
  • Cable defect positioning method and equipment
  • Cable defect positioning method and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0035] At present, there are certain disadvantages in the cable defect location methods. The current cable defect location method is not accurate enough, and the work efficiency of maintenance personnel is not high. For some weak defects on the cable, such as mild aging, damp and other defects, the defect position is not easy to be detected, and such ...

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 provides a cable defect positioning method and equipment. The method comprises: sending a cable defect positioning request to a signal transmitter, wherein the signal transmitter is used for generating an incident signal and inputting the incident signal to a to-be-tested cable, wherein the incident signal is related to a cable defect positioning request; acquiring a reflected signal and an incident signal of the to-be-tested cable received by the signal receiver; determining time-frequency domain distribution corresponding to the incident signal and time-frequency domain distribution corresponding to the reflected signal based on a preset Gaussian window function, wherein one or more parameters in the preset Gaussian window function are related to the length of the to-be-tested cable; determining a cross-correlation function of the incident signal and the reflected signal based on the time-frequency domain distribution corresponding to the incident signal and the time-frequency domain distribution corresponding to the reflected signal so as to obtain a defect positioning curve corresponding to the to-be-tested cable according to the cross-correlation function; and determining the defect position of the to-be-tested cable according to the defect positioning curve.

Description

technical field [0001] The present application relates to the technical field of power systems, and in particular to a cable defect location method and equipment. Background technique [0002] With the development of science and technology, the demand for electric energy is increasing, and people's requirements for power supply are gradually increasing. People's demand for electricity is not limited to the availability of electricity, but they hope that the daily electricity consumption can be stable and will not cause power outages. . [0003] As a mainstream power transmission tool, cables are prone to problems such as insulation aging and performance degradation after long-term use. In addition, there may be unfavorable factors in the external conditions of cables, which may cause local overheating, local damage, and partial discharge of cables, which seriously affect cable life. These problems are caused by defects on the cable. If the cable defects are not checked and...

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
IPC IPC(8): G01R31/08G01R31/11
CPCG01R31/083G01R31/088G01R31/11
Inventor 谢成赵深任广振孙翔周金辉何毅帆穆海宝邹星宇
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
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