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

On-line monitoring and diagnosis method and device for tap switch and storage medium

A technology of tap changer and diagnostic method, which is applied in the direction of measuring devices, testing of mechanical components, testing of machine/structural components, etc., can solve problems that cannot reflect electrical faults and initial defects, and operation and maintenance personnel cannot grasp them in real time and accurately Problems such as the working state of the on-load tap changer and the increase in the risk of power grid operation have achieved the effect of improving the efficiency and pertinence of maintenance, which is of great significance and avoiding the expansion of faults

Active Publication Date: 2021-01-05
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
View PDF3 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these measurement methods are based on the monitoring of indirect quantities, which cannot reflect the electrical faults and initial defects inside the on-load tap-changer, so that the operation and maintenance personnel cannot grasp the working status of the on-load tap-changer accurately and in real time, increasing grid operation risk

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-line monitoring and diagnosis method and device for tap switch and storage medium
  • On-line monitoring and diagnosis method and device for tap switch and storage medium
  • On-line monitoring and diagnosis method and device for tap switch and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0045] see figure 1 , is a schematic flowchart of an embodiment of an on-line monitoring and diagnosis method for a tap changer provided by the present invention, the method includes steps S1 to S5:

[0046] S1. Obtain the monitoring waveform of the odd-numbered side and the monitoring waveform of the even-numbered side of the diverter switch in the on-load tap-changer respectively; wherein, the monitoring waveform includes a current monitoring waveform and a volta...

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-line monitoring and diagnosing method and device for a tap switch and a storage medium. The method comprises the steps of: respectively obtaining monitoring waveforms ofthe odd number side and the even number side of a selector switch in an on-load tap switch; building an electromagnetic transient simulation model of the tapping switch, and carrying out the simulation of the normal switching of the on-load tapping switch, and obtaining the simulation waveforms of the odd and even sides of the switching switch of the on-load tapping switch; judging whether the internal electrical state and the mechanical state of the on-load tap-changer are normal or not according to the monitoring waveform and the simulation waveform; if the working state of the on-load tap-changer is judged to be normal, ending; otherwise, comparing with the fault simulation waveform in the fault simulation waveform library, or setting new fault re-simulation calculation until the simulation waveform consistent with the monitoring waveform characteristics is obtained, and determining the fault reason. According to the invention, on the premise of not changing the original wiring andstructure of the tapping switch, the internal electrical quantity of the switch is monitored in real time, and the working state of the on-load tapping switch is diagnosed through simulation comparison.

Description

technical field [0001] The invention relates to the technical field of electric equipment monitoring, in particular to an on-line monitoring and diagnosis method, device and storage medium of a tap changer. Background technique [0002] The on-load tap changer is the core component of the transformer. It has the function of stabilizing the center voltage of the load and regulating the reactive power flow in the AC system. ratio and increase the flexibility of grid control. As the only movable part of the transformer, the on-load tap-changer has high requirements on insulation and mechanical reliability. According to statistics, on-load tap changer faults caused by tap changer faults account for more than 30% of the total faults, and once a fault occurs, there is a lack of necessary fault recording data to support fault analysis. [0003] In order to grasp the working state of the on-load tap-changer, the existing on-line monitoring of the tap-changer mainly uses methods su...

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 Applications(China)
IPC IPC(8): G06F30/20G01R31/327G01M13/00
CPCG06F30/20G01R31/327G01M13/00
Inventor 雷园园赵林杰张巍喇元
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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