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

Cable joint discharge live detection method based on high-speed light sensation and pressure wave technologies

A cable joint, live detection technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of inability to eliminate the relative noise of high-speed photosensitive light sources, inability to detect, etc., achieve high signal-to-noise ratio, reduce the average number of times, The effect of high output frequency

Pending Publication Date: 2021-03-19
NANYANG POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this invention cannot eliminate the relative noise of the high-speed photosensitive light source, nor can it detect according to the characteristics of the pressure wave, the area to be detected and the type of defect to be detected, and it cannot effectively detect and analyze the cable joint

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 joint discharge live detection method based on high-speed light sensation and pressure wave technologies
  • Cable joint discharge live detection method based on high-speed light sensation and pressure wave technologies
  • Cable joint discharge live detection method based on high-speed light sensation and pressure wave technologies

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A method for detecting live discharge of cable joints based on high-speed light sensing and pressure wave technology, comprising the following steps:

[0042] S1: Construct the discharge-pressure wave multiphysics coupling model in the cable joint;

[0043] S2: Use the pressure wave sensor, electric field sensor and temperature sensor to collect the pressure wave information, electric field distribution, electric field strength information and temperature information of the cable joint to be tested, and transmit them to the information processing unit;

[0044] S3: The information processing unit analyzes and processes the pressure wave information, electric field distribution, electric field intensity information and temperature information according to the discharge-pressure wave multiphysics field coupling model;

[0045] S4: According to the analysis results, determine the area of ​​accumulated charge, that is, the hidden fault point.

[0046] The mathematical mode...

Embodiment 2

[0073] The cable joint discharge and liveness detection method based on high-speed light sensing and pressure wave technology in the embodiment of the present invention differs from the first embodiment in that:

[0074] The pressure wave must pass through the air from the device to be detected and then reach the pressure wave sensor. Due to the huge acoustic impedance difference between the equipment to be tested (including insulating materials, copper or aluminum semiconductors, etc.) and the air, most of the pressure wave energy is reflected back on the surface of the equipment to be tested, and the energy loss of the pressure wave is very large after it reaches the air. Large, so additional high-sensitivity detectors are required. The energy output is increased by coating the surface of the device under test with a material whose impedance is between the two, so as to compensate for the lack of signal energy at the detection end, which affects both the intensity and resolu...

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 cable joint discharge live detection method based on high-speed light sensation and pressure wave technologies, and belongs to the technical field of cable joint detection. Adischarge-pressure wave multi-physical field coupling model is constructed in a cable joint; a pressure wave sensor, an electric field sensor and a temperature sensor are used for collecting pressurewave information, electric field distribution, electric field intensity information and temperature information of a to-be-detected cable connector and transmitting the information to an informationprocessing unit; the information processing unit analyzes and processes the pressure wave information, the electric field distribution, the electric field intensity information and the temperature information according to the discharge-pressure wave multi-physical field coupling model; and a charge accumulation area, namely a hidden danger fault point, is determined according to an analysis result. The high-speed light sensation and pressure wave technology is adopted, and accurate detection of the cable joint is achieved.

Description

technical field [0001] The invention relates to the technical field of cable joint detection, in particular to a method for detecting electric discharge and electrification of cable joints based on high-speed light sensing and pressure wave technology. Background technique [0002] Cables are one of the equipment with a high probability of failure in the power grid. Due to the influence of factors such as installation process, laying environment, external force damage, and operating conditions, some hidden hidden dangers often appear inside, and internal hidden dangers often develop slowly. The characteristics of sudden and sudden characterization, coupled with the congenital insufficiency of state observability, can not be found in time during the handover and operation stages, and the lack of active disposal means will eventually lead to insulation defects, so that the hidden dangers will expand and accidents will occur due to insulation. Among them, the cable intermediate ...

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): G01R31/12
CPCG01R31/1272
Inventor 罗道军黄志博侯麟李刚苏凡姚楠
Owner NANYANG POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER
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