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

A three-phase anti-resonance voltage transformer

A resonant voltage, transformer technology, applied in the direction of inductors, transformers/inductor cores, transformers, etc., can solve the problems of inconsistent three-phase excitation characteristics, high cost, large size, etc.

Active Publication Date: 2021-09-10
GUIZHOU POWER GRID CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are disadvantages such as large volume, high cost, and inconsistent three-phase excitation characteristics.

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 three-phase anti-resonance voltage transformer
  • A three-phase anti-resonance voltage transformer
  • A three-phase anti-resonance voltage transformer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] refer to Figure 1~4 , which is the first embodiment of the present invention, which provides a three-phase anti-resonance voltage transformer, which includes a three-column core 100, and the three-column core 100 has a vertically arranged first column T and a second column K and the third column M, and the three-column core 100 has an equilateral triangular structure in an upper perspective.

[0037] It also includes a first coil 201 , a second coil 202 and a third coil 203 wound on the first column T, the second column K and the third column M respectively.

[0038] Further, the three-pillar core 100 includes a first core 101, a second core 102, and a third core 103. Specifically, the first core 101, the second core 102, and the third core 103 have the same structure and size, and the first core 101 1. The second iron core 102 and the third iron core 103 are all in a square ring structure, and the adjacent sides of the three overlap each other to enclose an equilater...

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 a three-phase anti-resonance voltage transformer, which comprises a three-column iron core, which has a first column, a second column and a third column, and the three-column iron core is distributed in an equilateral triangle structure; and a first coil, a second coil The second coil and the third coil, the first coil, the second coil and the third coil are respectively wound on the first post, the second post and the third post; the present invention has compact structure, small volume, light weight and Save raw materials; the excitation current of the three-phase voltage transformer is small, and the no-load loss is low, which reduces the no-load error of the product and then reduces the overall error of the product, improves the accuracy, and avoids the problem of large three-phase error deviation; it can be passed Enlarging the cross-section of the iron core, increasing the number of turns of the winding, and other methods greatly increase the zero-sequence impedance and improve the performance of anti-ferromagnetic resonance; greatly improve the accuracy of the product, and meet the latest requirements of the power sector to improve the error margin; further reduce the occurrence of ferromagnetic The possibility of resonance has played a double anti-resonance effect.

Description

technical field [0001] The technical field of the invention relates to a voltage transformer structure, in particular to a three-phase anti-resonance voltage transformer. Background technique [0002] At present, the distribution network of 35kV and below in my country mostly adopts the neutral point non-effectively grounded system, and the phenomenon of overvoltage in the system is very common. If there are no preventive measures, it will cause damage to power equipment and cause large-scale power outages. According to the operation experience of the power grid, there are many cases of ferromagnetic resonance caused by the saturation of the iron core of the electromagnetic voltage transformer in the neutral point ungrounded system. [0003] Under certain excitation conditions, the saturation inductive reactance of the electromagnetic voltage transformer core becomes nonlinearly smaller, and ferromagnetic resonance occurs when the inductive reactance is equal to the capaciti...

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): H01F27/24H01F27/26H01F27/28H01F27/30H01F27/32H01F27/34H01F38/26
CPCH01F27/24H01F27/263H01F27/2823H01F27/306H01F27/324H01F27/34H01F27/341H01F38/26
Inventor 张广梅贺春安刘斌姜小剑朱皓王磊黄力赵武刚任杰李洪邓朴文忠进赵圆圆陈航张祥雄王翔刘志斌
Owner GUIZHOU 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