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

Power cable withstand voltage test method and device based on withstand voltage equivalent analysis, and terminal

A power cable, equivalent analysis technology, applied in the field of power cables, can solve the problem of inaccurate results, and achieve the effect of ensuring accuracy

Pending Publication Date: 2022-07-19
STATE GRID HEBEI ELECTRIC POWER RES INST +2
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a power cable withstand voltage test method, device and terminal based on withstand voltage equivalent analysis to solve the problem that the current withstand voltage test results of 0.1Hz cosine square wave voltage are not accurate enough

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
  • Power cable withstand voltage test method and device based on withstand voltage equivalent analysis, and terminal
  • Power cable withstand voltage test method and device based on withstand voltage equivalent analysis, and terminal
  • Power cable withstand voltage test method and device based on withstand voltage equivalent analysis, and terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0065] In the following description, for the purpose of illustration rather than limitation, specific details such as specific system structures and technologies are set forth in order to provide a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0066] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following descriptions will be given through specific embodiments in conjunction with the accompanying drawings.

[0067] Most of the breakdown accidents of Crosslinked Polyethylene Cable (XLPE) cables are closely related to the main insulation of the power cab...

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 power cable withstand voltage test method and device based on withstand voltage equivalent analysis, and a terminal. The method comprises the following steps: carrying out a withstand voltage test on a target power cable by adopting 0.1 Hz cosine square wave voltage to obtain an initial test result; and correcting the initial test result according to a preset equivalent analysis result, and determining the corrected test result as a final test result of the target power cable. The process of obtaining the preset equivalent analysis result is that processing frequency voltage and 0.1 Hz cosine square wave voltage are applied to multiple groups of insulation defect models with different insulation residual thicknesses respectively, and a withstand voltage test is carried out; according to the obtained multiple sets of breakdown time and breakdown failure probability, Weibull distribution of the power frequency voltage and 0.1 Hz cosine square wave voltage is obtained; and carrying out equivalence analysis based on scale parameters, shape parameters and morphological characteristics of the breakdown channel in Weibull distribution to obtain an equivalent analysis result. On the basis of equivalent analysis, the accuracy of the withstand voltage test result is improved.

Description

technical field [0001] The invention relates to the technical field of power cables, in particular to a power cable withstand voltage test method, device and terminal based on withstand voltage equivalent analysis. Background technique [0002] Power cables are cables used to transmit and distribute electrical energy, and are often used in urban underground power grids, power station lead-out lines, internal power supply in industrial and mining enterprises, and underwater transmission lines across rivers and seas. With the increasing requirements for power supply reliability, the use of power cables in urban power grids has also increased significantly. [0003] In practical applications, most power cables are directly buried or laid in cable trenches, which are in contact with moisture or moisture for a long time. In addition, the power cable body and accessories will also experience a certain degree of insulation aging during long-term use, which will lead to power cable ...

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): G01R31/12G01R31/08
CPCG01R31/1272G01R31/086
Inventor 魏力强贾伯岩苏金刚张鹏王伟李宏峰
Owner STATE GRID HEBEI ELECTRIC POWER RES INST
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More