Unlock instant, AI-driven research and patent intelligence for your innovation.

A 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 transformers not running normally, reliability impact, maintenance workload, etc., to achieve wide application prospects and promotion value, reliable The effect of high performance and simple structure

Active Publication Date: 2018-01-12
刁俊起
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the on-load tap changers that drive the load to adjust the voltage in power transformers adopt the form of rapid current-limiting resistor transition oil arc extinguishing, because the use of oil arc extinguishing will pollute the oil greatly, and the maintenance workload is large, so the reliability is affected.
It is easy to cause contact burnout, and it needs to be updated frequently, and the transformer oil needs to be filtered frequently
At present, in order to overcome the above problems, an on-load switch using vacuum arc extinguishing has appeared, but the reliability is not high, and the switch often explodes due to the failure of the vacuum bubble, which endangers the safety of the transformer. On-load voltage regulation, but the technology is more complicated, once the thyristor fails, the transformer will not be able to operate normally

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 transformer on-load tap changer
  • A transformer on-load tap changer
  • A transformer on-load tap changer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] An on-load tap changer for a transformer, including a switch circuit, the switch circuit includes a symmetrically distributed odd-number tap switch circuit and an even-number tap switch circuit, and the tap switch circuit includes working contacts K1, K2 , the double-contact synchronous transition contacts k1, k1' and k2, k2' and the moving contact A composed of the main contact and the auxiliary contact, and the tap switching circuit includes the control of the working contacts drawn from the tap circuit and the main contact control circuit and the auxiliary contact control circuit connected to the main contacts k1 and k2; the working contact control circuit is that the working contacts K1 and K2 are connected to the main contacts to trigger the transmitters TSC1 and TSC4 The input terminal of the main contact trigger transmitter TSC1, TSC4 is connected to the main contact control circuit; the main contact control circuit is the secondary contact trigger transmitter TSC...

Embodiment 2

[0035] An on-load voltage regulating switch for a transformer, the main contact control circuit is a series branch of secondary contact trigger transmitters TSC2, TSC3 and transition resistors R1, R2 connected in parallel to the fuse and the main contact high-voltage thyristor SK1, Both ends of the series branch of SK4; other parts and action principles are the same as those in Embodiment 1, and will not be repeated here.

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 relates to an on-load tap changer for a transformer, which includes a switch circuit, and the switch circuit includes a symmetrically distributed odd-numbered tap switching circuit and an even-numbered tap switching circuit, and the tap switching circuit includes working contacts , a double-contact synchronous transition contact composed of a main contact and an auxiliary contact, and a moving contact that can be in contact with a working contact and a double-contact synchronous transition contact. The present invention has simple structure, low price, and high reliability. It can realize arc-free operation in the whole switching process and double-state operation, and has broad application prospects and promotion value.

Description

technical field [0001] The invention relates to a voltage regulating device for a transformer, in particular to an on-load voltage regulating switch for a transformer. Background technique [0002] At present, most of the on-load tap changers that drive the load to adjust the voltage in power transformers adopt the form of rapid current-limiting resistor transition oil arc extinguishing, because the use of oil arc extinguishing will pollute the oil greatly, and the maintenance workload is large, so the reliability is affected. . It is easy to cause contact burnout, and it needs to be updated frequently, and the transformer oil needs to be filtered frequently. At present, in order to overcome the above problems, an on-load switch using vacuum arc extinguishing has appeared, but the reliability is not high, and the switch often explodes due to the failure of the vacuum bubble, which endangers the safety of the transformer. On-load voltage regulation, but the technology is mo...

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): H01F29/04H01H1/56H01H9/54
Inventor 刁俊起张磊李强王忠亮王秀张学凯
Owner 刁俊起