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

Method of utilizing vibration waveform for detecting state of transformer winding

A technology of transformer windings and vibration waveforms, applied in transformer testing, measuring electrical variables, instruments, etc., can solve problems such as system operation impact, achieve timely maintenance or replacement, and avoid sudden short-circuit effects

Inactive Publication Date: 2011-01-05
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
View PDF0 Cites 37 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, these two methods are offline detection methods, that is, the transformer needs to be out of operation for detection after power failure, which will have a certain impact on the system operation

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
  • Method of utilizing vibration waveform for detecting state of transformer winding
  • Method of utilizing vibration waveform for detecting state of transformer winding
  • Method of utilizing vibration waveform for detecting state of transformer winding

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0036] On November 17, 2006, Shenyang Hushitai National Transformer Quality Inspection Center conducted a short-circuit impact test on a 10kV distribution transformer of Shanghai Electric Power Company.

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 relates to a method of utilizing the vibration waveform for detecting the state of the transformer winding. A transformer winding is viewed as a mechanical system; and if the winding is loosened or deformed, the mechanical characteristics of the winding changes, thus the corresponding mechanical characteristics of the transformer winding under the action of the impulse current are detected and the loosening and deforming condition of the transformer winding can be detected sensitively.

Description

technical field [0001] The invention relates to a method for detecting the state of a transformer winding by using a vibration waveform, in particular to a method for detecting the state of a transformer winding by using a vibration waveform excited by a short-circuit surge current of a transformer. Background technique [0002] The transformer is one of the most important equipment in the power system, and its operation stability has a great influence on the safety of the power system. With the increasing capacity of my country's power grid, the short-circuit capacity is also increasing. The huge electromagnetic force generated by the surge current formed by the short-circuit of the transformer outlet poses a serious threat to the mechanical strength and dynamic stability of the transformer winding. At present, the operating environment of substation equipment and lines is not optimistic. The deformation of transformer winding caused by external short circuit is a relativel...

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): G01R31/06G01H17/00
CPCG01R31/027G01R31/62
Inventor 姜益民金之俭朱子述饶柱石傅坚
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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