Unlock instant, AI-driven research and patent intelligence for your innovation.

On-load tap-changer mechanical state monitoring method based on energy contribution degree

A technology of on-load tap-changing and mechanical status, which is applied in the testing of mechanical components, testing of machine/structural components, measuring devices, etc. It can solve problems such as difficulties in monitoring the mechanical status of on-load tap-changers, and avoid major failures , the effect of effective recognition

Pending Publication Date: 2022-07-29
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for monitoring the mechanical state of on-load tap-changers based on energy contribution, thereby overcoming the existing shortcomings of difficulty in monitoring the mechanical state of on-load tap-changers

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
  • On-load tap-changer mechanical state monitoring method based on energy contribution degree
  • On-load tap-changer mechanical state monitoring method based on energy contribution degree
  • On-load tap-changer mechanical state monitoring method based on energy contribution degree

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] The technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0045] like figure 1 As shown, the method for monitoring the mechanical state of an on-load tap-changer based on energy contribution provided by the present invention includes the following steps:

[0046] S1. Collect the vibration signal x(k) during the switching process of the on-load tap-changer, and the length of x(k)x(k) is N 0 , the sampling frequency is f s .

[0047] S2, carry out Fourier transform to described vibration signal x (k), obtain vibration sig...

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 an on-load tap-changer mechanical state monitoring method based on the energy contribution degree, and relates to the technical field of transformer on-load tap-changers. Vibration signals in the switching process of an on-load tap-changer are collected; fourier transform is carried out on the vibration signals to obtain vibration signal frequency spectrum distribution; constructing a vibration narrow-band signal sequence represented by a frequency domain according to the vibration signal spectrum distribution; designing a multi-layer filter bank according to the vibration narrow-band signal sequence, and calculating a sub-band energy sequence group of signals output by the vibration narrow-band signal sequence through the multi-layer filter bank; calculating a contribution degree sequence of the sub-band energy sequence group; calculating a similarity coefficient between the historical vibration signal contribution degree sequence and the current vibration signal contribution degree sequence when the same gear of the on-load tap-changer is switched; and the mechanical state of the on-load tap-changer is judged through the similarity coefficient, so that accurate monitoring of the mechanical state of the on-load tap-changer is realized through the vibration signal in the gear switching process of the on-load tap-changer.

Description

technical field [0001] The invention belongs to the technical field of transformer on-load tap changers, in particular to a method for monitoring the mechanical state of an on-load tap changer based on energy contribution. Background technique [0002] The on-load tap-changer is the only movable key component of the on-load tap changer. It can change the voltage transformation ratio under load conditions, realize the adjustment of the system voltage under the condition of uninterrupted power supply, and realize compensation for voltage fluctuations, power regulation, and improvement of power. important functions such as system performance and improving power quality. However, with the increase in the service life of the on-load tap-changer and the increase in the number of voltage adjustments, the failure rate also increases. According to statistics, the fault types of the on-load tap-changer mainly include electrical faults and mechanical faults, and mechanical faults are ...

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): G01M13/00G01H17/00G01R31/327
CPCG01M13/00G01H17/00G01R31/327
Inventor 马源陈梁远余长厅黎大健张磊赵坚
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
Features
  • R&D
  • 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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com