Transformer winding deformation and capacitance-type bushing fault detection device and method

A transformer winding and capacitor type technology is applied in the field of transformer winding deformation and capacitive bushing fault detection devices, which can solve problems such as capacitive bushing faults and achieve the effect of avoiding safe operation.

Pending Publication Date: 2017-08-29
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
View PDF14 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This application provides a transformer winding deformation and capacitive bushing fault detection device a

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
  • Transformer winding deformation and capacitance-type bushing fault detection device and method
  • Transformer winding deformation and capacitance-type bushing fault detection device and method
  • Transformer winding deformation and capacitance-type bushing fault detection device and method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0035] On the one hand, see figure 1 , A schematic structural diagram of a transformer winding deformation and capacitive bushing fault detection device provided by an embodiment of this application, the device includes:

[0036] High-voltage DC power supply controller 1, high-voltage DC generator 2, waveform and partial discharge detection controller 3, waveform and partial discharge detector 6, DC charging control switch 4, and detection control switch 5;

[0037] The high-voltage direct current power supply controller 1 is connected to the high-voltage direct current generator 2; the high-voltage direct current power supply controller 1 is used to control the direct current voltage applied to the transformer; the high-voltage direct current generator 2 is used to provide high-voltage direct current voltage to the transformer;

[0038] The high voltage direct current generator 2 is connected to the direct current charging control switch 4; the direct current charging control switch ...

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 application discloses a transformer winding deformation and capacitance-type bushing fault detection device and method capable of controlling opening and closing of the DC control switch and the detection control switch, measuring the resonance wave, the resonance wave time and the frequency characteristic of the transformer winding. The measured resonance wave is compared with the historical resonance wave to determine whether the transformer winding is deformed or not. The partial discharge magnitude of the capacitance-type bushing is measured, and the capacitance and the dielectric dissipation factor of the capacitance-type bushing are estimated according to the resonance wave time and the frequency characteristic. The partial discharge magnitude, the capacitance and the dielectric dissipation factor are analyzed to determine whether the capacitance-type bushing has defects or not. The device and method provided by the present invention can detect the transformer winding deformation and the capacitance-type bushing fault in time to protect the transformer from being influenced by emergency.

Description

technical field [0001] The present application relates to the technical field of power measurement, in particular to a detection device and method for transformer winding deformation and capacitive bushing faults. Background technique [0002] According to statistics, mild deformation of power transformer windings of 110kV and above and latent weak insulation faults caused by partial discharge between capacitor bushing capacitor layers are one of the main reasons for power transformer damage and grid failure. Winding deformation refers to the axial or radial dimensional change of the power transformer winding under the action of mechanical force or electrodynamic force, usually characterized by local twisting, bulging or displacement of the winding. When the transformer is subjected to short-circuit current impact or impact during transportation, winding deformation may occur, which will directly affect the safe operation of the transformer. The capacitor bushing is the out...

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): G01R31/12G01R27/02G01R27/26
CPCG01R27/02G01R27/26G01R31/1263
Inventor 刘红文王科
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap