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

Transformer turn-to-turn short-circuit fault location positioning method

A technology of inter-turn short-circuit fault and positioning method, which is applied in the field of transformers and can solve the problems that the location of inter-turn short-circuit fault cannot be accurately located

Inactive Publication Date: 2017-10-13
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
View PDF4 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for locating the fault location of the inter-turn short circuit of a transformer to solve the problem that the existing positioning method cannot accurately locate the fault location of the inter-turn short circuit

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 turn-to-turn short-circuit fault location positioning method
  • Transformer turn-to-turn short-circuit fault location positioning method
  • Transformer turn-to-turn short-circuit fault location positioning method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0029] Please refer to the attached figure 1 , with figure 1 A schematic flowchart of a method for locating a fault location of a transformer interturn short circuit provided by an embodiment of the present invention is shown.

[0030] The method for locating the transformer turn-to-turn short-circuit fault location provided by the embodiment of the present invention specifically includes:

...

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 provides a transformer turn-to-turn short-circuit fault location positioning method. According to the method, a transformer model is established according to Infolycita software; secondary side windings are divided into winding sections in an equal-step length manner; the phase current of each winding section is measured, a short-circuit current-short circuit turn location curve is drawn, so that a change rule of short-circuit current changing with a transformer turn-to-turn short-circuit location is obtained; and when a transformer is short circuited, a turn-to-turn short-circuit location corresponding to measured short-circuit current is searched on the short-circuit current-short circuit turn location curve, so that the specific location of the turn-to-turn short-circuit fault of the transformer can be determined. According to the method, the establishment of the transformer model and the division of the secondary side windings consider a magnetic field and a circuit, and therefore, magnetic flux leakage can be avoided, the calculation accuracy of the phase current can be improved, and therefore, the drawing accuracy of the short-circuit current-short circuit turn location curve can be improved, and the specific location of the turn-to-turn short-circuit fault of the transformer can be determined accurately.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a method for locating the location of a short-circuit fault between turns of a transformer. Background technique [0002] Transformer is an important electrical equipment in power system. Using the principle of electromagnetic induction, the transformer can realize voltage transformation, current transformation and impedance transformation, and then play the role of isolation, voltage stabilization, power distribution and power transmission. Due to the isolation, voltage stabilization, power distribution and power transmission functions of the transformer, if the transformer fails, it will affect the normal operation of the power grid. Therefore, it is extremely important to ensure the safe operation of the transformer. [0003] Common faults in transformer operation include winding, bushing and tap changer faults, and winding fault is the most common fault. Transformer wi...

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): G01R31/02
CPCG01R31/62
Inventor 李胜男孟庆民
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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