EPR cable service life estimation method based on multiscale space spectrogram information

A spatial spectrum, multi-scale technology, applied in the identification, calculation, and measurement of patterns in signals, etc., can solve the problem of lack of discussion on the estimation of the service life of EPR cables.

Active Publication Date: 2019-12-31
SOUTHWEST JIAOTONG UNIV
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Under the background of the rapid development of the current railway industry...

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
  • EPR cable service life estimation method based on multiscale space spectrogram information
  • EPR cable service life estimation method based on multiscale space spectrogram information
  • EPR cable service life estimation method based on multiscale space spectrogram information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0055] The method for estimating the service life of EPR cables based on multi-scale spatial spectrogram information includes the following steps:

[0056] Step 1: Build a partial discharge spectrum test platform

[0057] Such as figure 1 , to build a partial discharge spectrum test platform, mainly composed of high-frequency voltage source (1), No. 1 outlet port (2), high-voltage insulated wire (3), test cable (4), terminal (5), high-frequency current mutual induction coil (6), No. 1 ground wire (7), No. 1 signal transmission line (8), data collector (9), No. 2 signal transmission line (10), upper computer (11), No. 2 outlet port (12), 2 No. ground wire (13).

[0058] Connect the No. 1 outlet port (2) of the high-frequency voltage source (1) to the terminal (5) of the test cable (4) through a high-voltage insulated wire (3), and insert the high-freq...

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 disclsoes an EPR cable service life estimation method based on multiscale space spectrogram information. The method comprises the following steps: acquiring local discharge spectrogram information of the actually running cable and a to-be-detected cable, extracting an aging characteristic factor and estimating service life of the to-be-detected cable according to the aging characteristic factor. The method disclosed by the invention can accurately and efficiently estimate service life of an EPR cable and greatly reduce maintenance workload.

Description

technical field [0001] The invention belongs to the field of cable insulation state detection, and in particular relates to a method for estimating the service life of EPR cables based on multi-scale spatial spectrogram information. Background technique [0002] On-board ethylene-propylene rubber cables (EPR) are key high-voltage equipment in high-speed trains and electric locomotives. EPR cables are required for the connection of various high-voltage electrical equipment in the on-board power supply system. The use status of EPR cables directly affects the safety and security of the traction power supply system. stability and economic operation. EPR insulation is an important part of the cable, and it is also a part that is easily damaged during the operation of the cable. The decline of cable insulation performance will not only cause a large amount of power loss, but also pose a serious safety risk. In the slightest, the working current in the pantograph-catenary line wi...

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): G01R31/12G06K9/00G06K9/62G06F17/16G06F17/15
CPCG01R31/1272G06F17/16G06F17/15G06F2218/02G06F2218/08G06F18/213
Inventor 郭蕾曹伟东张靖康邢立勐杨涵权圣威
Owner SOUTHWEST JIAOTONG UNIV
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