Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

A Rapid Field Diagnosis Method for 10kV XLPE Cable Aging Based on Polarization Current Measurement

A polarization current, rapid diagnosis technology, applied in the direction of testing dielectric strength, etc., can solve the problems of shortening polarization current measurement time, difficult cable rapid diagnosis, long measurement time, etc., to shorten polarization current measurement time and accurately reflect Aging state, the effect of shortening the measurement time

Active Publication Date: 2017-12-29
HUAZHONG UNIV OF SCI & TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a rapid on-site diagnosis method for 10kVXLPE cable aging based on polarization current measurement. The measurement time is measured, and the polarization current is quickly and intuitively converted into the dielectric loss factor tanδ at the corresponding frequency through the improved Harmon approximation algorithm, so as to judge the insulation condition of the cable according to the dielectric loss factor tanδ at the required frequency. In the prior art, due to the long measurement time of the polarization current, the process of converting the polarization current into the dielectric loss factor tanδ at the corresponding frequency is complicated, which makes it difficult for the PDC method to quickly diagnose the cable on site.

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 Rapid Field Diagnosis Method for 10kV XLPE Cable Aging Based on Polarization Current Measurement
  • A Rapid Field Diagnosis Method for 10kV XLPE Cable Aging Based on Polarization Current Measurement
  • A Rapid Field Diagnosis Method for 10kV XLPE Cable Aging Based on Polarization Current Measurement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0031] The invention provides a rapid on-site diagnosis method for 10kV XLPE cable aging based on polarization current measurement, based on the classical Harmon approximation, for the Harmon when the fitting parameter n is 0

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 rapid on-site diagnosis method for 10kV XLPE cable aging based on polarization current measurement, by improving the fitting parameter n when the relaxation current is at 0

Description

technical field [0001] The invention relates to the field of aging assessment methods for insulating materials, and more particularly relates to a method for quickly evaluating the insulation of cross-linked polyethylene medium-voltage cables on site by using a polarization current method. Background technique [0002] Crosslinked Polyethylene (XLPE) cables are widely used in power transmission lines due to their excellent mechanical and electrical properties. The aging condition and remaining life of the cable insulation directly affect the stability of the power system, so the development of XLPE cable insulation diagnosis technology is of great significance for improving the stability of the power system. [0003] At present, a lot of research has been done on cable insulation diagnosis methods at home and abroad. Among them, the PDC (Polarization and Depolarization Current, PDC) method is an effective test method for detecting the aging of electrical equipment. Advantag...

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): G01R31/12
Inventor 李化饶建东林福昌叶刚仝进孙浩飞刘毅张钦
Owner HUAZHONG UNIV OF SCI & TECH
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
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