A simulation test platform for radial deformation of transformer windings

A technology of transformer winding and radial deformation, applied in the direction of instruments, measuring electrical variables, measuring devices, etc., can solve the problems of difficulty in convenient simulation, restricting the efficiency and effect of experimental research of winding deformation detection methods, and trouble, and achieves a change in the degree of deformation. Effect

Active Publication Date: 2018-05-18
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +3
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Simply shifting the winding, connecting capacitors, short-circuiting turns, etc., is not flexible and accurate enough, and it is difficult to simulate deformations of various shapes, positions, and ranges conveniently, and when replacing deformed parts, capacitors, etc., the winding needs to It is very troublesome to take it out from the oil tank, which greatly restricts the efficiency and effect of the experimental research of the winding deformation detection method, and limits the development and improvement of the winding deformation detection technology.

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 simulation test platform for radial deformation of transformer windings
  • A simulation test platform for radial deformation of transformer windings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0019] As shown in Figure 2, a simulation test platform for transformer winding deformation consists of 110kV winding (1), transformer oil tank (2), 110kV high voltage bushing (3), 10kV low voltage bushing (4), hard It consists of an aluminum push rod (5), an iron deformation block (6) and a dynamic sealing mechanism (7). Wherein the height of the winding is 1080mm, and the outer diameter is 1150mm; the oil tank (2) is a square casing made of iron. The minimum gap between the winding (1) and the fuel tank (2) is 240 mm; the dynamic sealing mechanism (7) includes a flange through the tank wall and an O-shaped rubber sealing ring, which can ensure easy control of the push rod (5) extending in or out. The winding (1) is placed inside the oil tank (2), and the high-voltage lead wire of the winding (1) is led out of the oil tank (2) through the bushing (3...

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 belongs to a transformer winding deformation test research platform, in particular to a physical simulation platform for oil-immersed power transformer winding radial deformation. The existing laboratory winding deformation test platform simulates the on-site winding deformation by processing the transformer winding, while the transformer oil tank and iron core remain unchanged, and the winding is simply displaced, connected to the capacitor, and short-circuited. , is not flexible and accurate enough, and it is difficult to simulate deformations of various shapes, positions, and ranges conveniently, and when replacing deformed parts, capacitors, etc., the windings need to be taken out of the fuel tank, which is very troublesome. The invention changes the position of the deformation block (6) by converting the distributed capacitance change caused by the radial deformation of the winding into the distributed capacitance change caused by the deformation of the oil tank, which is equivalent to changing the deformation part of the winding, or changing the deformation range and deformation of the winding To a certain extent, the effect of simulating the radial deformation of the winding is easily achieved.

Description

technical field [0001] The invention belongs to a transformer winding deformation test research platform, in particular to a physical simulation platform for oil-immersed power transformer winding radial deformation. Background technique [0002] Transformer winding deformation refers to the irreversible change in the size or shape of the winding under the action of electrodynamic force and mechanical force. It includes changes in axial and radial dimensions, body displacement, winding twist, bulge and inter-turn short circuit, etc. In addition, the winding deformation also has a cumulative effect, that is, after being subjected to a short-circuit current impact, the transformer winding is not damaged immediately, and only has a small permanent deformation, but it leads to a decrease in its insulation performance and mechanical performance. When the next short-circuit current impacts, the winding deformation will be aggravated, and a vicious circle will appear. Therefore, ...

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): G01B5/00G01R31/00
Inventor 程养春毕建刚常文治潘晓华邓彦国白华颖
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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