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

Transformer on-load tap changer

A voltage regulating switch and transformer technology, applied in the direction of transformers, variable transformers, electric switches, etc., can solve the problems of long response time, low reliability, and damaged contacts, and solve the problem of arc extinguishing, wide application range, The effect of high reliability

Active Publication Date: 2016-03-30
ZHEJIANG BOTHWELL ELECTRIC
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the existing distribution transformers generally use compound on-load tap changers, which have the following disadvantages: During the process of switching taps, the contacts are prone to arcing, which leads to damage to the contacts and makes the The oil quality is easily deteriorated, and regular power cuts and oil changes are required for maintenance. Continuous gear adjustments will cause the oil temperature to rise, and frequent pressure adjustments are not suitable; moreover, it uses the electric motor to rotate to store energy for the spring energy storage mechanism, and then releases it suddenly after passing the dead point. mode to drive tap contacts to switch voltage gears
This kind of driving mechanism has complex structure, many parts, high failure rate, low reliability, slow action speed of tap changer and long response time

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 on-load tap changer
  • Transformer on-load tap changer
  • Transformer on-load tap changer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0030] Such as Figure 1-7As shown, a transformer on-load tap changer, each of the three phases A, B, and C includes a rated branch, a step-up branch, a step-down branch and a parallel connection with the rated branch The transition branch, the rated branch, the step-up branch, and the step-down branch are respectively equipped with a vacuum interrupter; the transition branch includes resistors connected in series with each other and a transitional vacuum interrupter;

[0031] The present invention also includes a set of step-up permanent magnet mechanism 1, a set of step-down permanent magnet mechanism 2 and a set of rated permanent magnet mechanism 3; the step-up permanent ...

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 transformer on-load tap changer. Each phase of the transformer on-load tap changer comprises a rated branch, a boosting branch, a step-down branch and a transition branch, wherein the rated branch, the boosting branch, the step-down branch and the transition branch are respectively provided with a vacuum arc-extinguishing chamber; the transition branch is connected with the rated branch in parallel; and the transition branch comprises a transition vacuum arc-extinguishing chamber which is connected with a resistor in series, a boosting permanent magnet mechanism which is used for driving the vacuum arc-extinguishing chamber in the three-phase boosting branch to open or close, a step-down permanent magnet mechanism which is used for driving the vacuum arc-extinguishing chamber in the three-phase step-down branch to open or close, and a rated permanent magnet mechanism which is used for driving the vacuum arc-extinguishing chambers in the three-phase rated branch and the transition branch to open or close.

Description

Technical field [0001] The present invention is the field of transformer equipment technology in the power industry, and especially involves a load regulating switch for transformer. Background technique [0002] In the "Power Fair Network Construction and Reconstruction Action Plan (2015 ~ 2020)" released by the National Energy Administration, the energy conservation and consumption reduction, power supply quality, intelligence, and reliability of the distribution station area have greatly improved.The transformer has the function of loading pressure and is becoming increasingly urgent. [0003] At present, existing power distribution transformers are generally used in composite types of voltage regulating switches. This kind of switch has the following disadvantages: in the process of switching the segmentation, the contact is easy to form an arc, which causes damage to the contact, causing the contact to cause damage, causing the contact to cause damage, causing the contact to...

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): H01H1/56H01F29/04H01F27/40
CPCH01F27/40H01F29/04H01H9/0038
Inventor 吴正文姜方军
Owner ZHEJIANG BOTHWELL ELECTRIC
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