A Method for Simulating and Testing Cable Radial Damage Fault Under Temperature Gradient

A technology of temperature gradient and test method, applied in the direction of fault location, fault detection according to conductor type, etc., to achieve the effect of accurate damage degree judgment

Active Publication Date: 2019-08-06
SOUTHWEST JIAOTONG UNIV
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no research on the simulation of cable radial damage faults under temperature gradients, and the detection of cable radial damage faults is mainly based on partial discharge detection, which is a destructive detection. Therefore, there is an urgent need for a A convenient and non-destructive detection platform and method for radial damage fault simulation of cables under temperature gradients

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 Simulating and Testing Cable Radial Damage Fault Under Temperature Gradient
  • A Method for Simulating and Testing Cable Radial Damage Fault Under Temperature Gradient
  • A Method for Simulating and Testing Cable Radial Damage Fault Under Temperature Gradient

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] The present invention will be further described below in conjunction with embodiment.

[0047] The implementation cases are as follows:

[0048] figure 1 Shown is the cable radial damage fault simulation device under temperature gradient, including shielding shell (1), height adjuster 1 (2), cooling assembly 1 (3), temperature sensor 1 (4), U-shaped clamp 3 (5) , height adjuster 2(6), cooling assembly 2(7), temperature sensor 2(8), U-shaped clamp 2(9), height adjuster 3(10), cooling assembly 3(11), temperature sensor 3( 12), U-shaped fixture 1 (13), DC current source (14), console (15), selection button (16), display screen (17), start button (18), mode selector (19), the first A support assembly (20), left lateral slide rail (21), right lateral slide rail (31), second support assembly (22), third support assembly (23), data collection line (24), cable to be tested ( 25), U-shaped clamp 4 (26), U-shaped clamp 5 (27), longitudinal sliding rod 1 (28), longitudinal slid...

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 radial damage fault simulation method in presence of a temperature gradient. Left and right transverse sliding rails are arranged in a shielding shell of a simulation device; a first support assembly comprises left and right support posts arranged on the left and right transverse sliding rails; the left and right support posts are separately connected with left andright ends of a lengthways sliding rod; a height adjustor capable of moving lengthways is arranged at the lengthways sliding rod in a sleeving manner; a U-shaped clamp is arranged at the top part of the height adjustor; the U-shaped clamp comprises a U-shaped clamp head; and the U-shaped clamp head is also provided with a cooling assembly. An evaluation method comprises the steps such as a step ofdrawing a standard frequency spectrum curve and a testing frequency spectrum curve, a step of fitting by utilizing a piecewise linear interpolation, a step of calculating a curve integral differenceof each section, a step of judging after calculating a cable temperature gradient loss coefficient and a temperature gradient fault judgment coefficient. The simulation device can realize fault simulation of different radial damage of the cable in the presence of the temperature gradient; and according to the evaluation method, the damage degree of the radial loss fault of the cable can be judgedaccurately.

Description

technical field [0001] The invention belongs to the field of cable terminal faults of high-speed rail trains, and in particular relates to a method for simulating and testing cable radial damage faults under temperature gradients. Background technique [0002] In recent years, with the rapid development of my country's high-speed railways, the electrification rate of railways has continued to increase. Due to its high dielectric properties and toughness, ethylene-propylene rubber cables are responsible for transporting electric energy in railways. The situation of the cable is directly related to the operation safety of the entire train. Due to the complexity of the railway road and the problems of the train's own structure, the cables often have different degrees of bending, causing radial damage to the cables, resulting in the concentration of abnormal temperature rise points inside the insulating layer, and when the train is in a severe cold area or When running in rainy ...

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): G01R31/08
CPCG01R31/083
Inventor 郭蕾车雨轩白龙雷余洋李丽妮陈远虎周利军王伟敏
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