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

Control device of on-load tap-changer and application method thereof

A technology for on-load tap-changing and control equipment, which is applied in the field of transformers, and can solve problems such as difficult arc extinguishing, low reliability of arc extinguishing methods, and complex structure of purely mechanical switching switches.

Pending Publication Date: 2022-02-25
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the on-load tap-changers are of purely mechanical structure, and the purpose of extinguishing the switching arc is achieved by vacuum bag or oil immersion. However, due to the complex structure of the purely mechanical switch, the reliability of the arc extinguishing method is low. After switching, it is very easy to cause difficulty in extinguishing the arc, and then cause hundreds of thousands of amperes of arc discharge, causing fire and explosion

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
  • Control device of on-load tap-changer and application method thereof
  • Control device of on-load tap-changer and application method thereof
  • Control device of on-load tap-changer and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] An embodiment of the present invention provides a control device for an on-load tap-changer. The on-load tap-changer is composed of a plurality of power electronic switching branches and a mechanical switch ( figure 1 A, B, C, and D are composed of mechanical switches (mechanical knife switch), as shown in Figure 2(a) and Figure 2(b), each power electronic switching branch is composed of multiple power electronic switching devices, Each power electronic switching device in each power electronic switching branch is connected to a driver, and a start switching detection device is set on the mechanical switch, such as image 3 As shown, the control equipment includes: a power electronic valve base control system 1 and a motor drive system 2 .

[0041] Such as image 3 As shown, the power electronic valve-based control system 1 is respectively connected with each driver, the start switching detection device, and the motor drive system 2; the motor drive system 2 is also co...

Embodiment 2

[0064] An embodiment of the present invention provides an application method of a control device for an on-load tap changer, based on the control device for an on-load tap changer in Embodiment 1, such as Figure 7 As shown, the application methods in the figure include:

[0065] Step S11: The motor drive system controls the mechanical switch to switch gears by controlling the rotation state of the motor. When the mechanical switch is in the non-switching state, start the switching detection device to send multiple specific state signals; when the mechanical switch is in the switching state, start the switching detection The device sends out multiple start switching signals.

[0066] Such as image 3 As shown, the motor drive system drives the motor of the mechanical switch to rotate, and the motor stores energy for the energy storage spring of the mechanical switch. When the motor rotates to a certain number of turns, the stored energy of the spring is released, driving the ...

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 control device of an on-load tap-changer and an application method thereof. The method comprises the steps that a power electronic valve base control system judges whether a starting switching detection device breaks down or not according to the number of received specific state signals; when the starting switching detection device is normal, the power electronic valve base control system judges the state of the starting switching detection device and the accurate starting switching time according to the number of starting switching signals; the power electronic valve base control system further controls the power electronic valve base according to the state of the starting switching detection device, the state, fed back by the driver, of the power electronic switching device, the state of the power electronic valve base control system body, the rotating state, fed back by the motor driving system, of the motor and the starting switching moment, and a corresponding trigger command is issued to each driver based on a preset switching time sequence of the power electronic switch, and a control command is issued to the motor driving system to control the rotation state of the motor, thereby realizing state monitoring and control of each switching branch.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a control device for an on-load tap changer and an application method thereof. Background technique [0002] As one of the core components of the converter, the on-load tap changer can switch the taps of different gears in the transformer winding without interrupting the load current, thereby changing the number of turns of the transformer winding, that is, changing the Transformation ratio, and finally realize the adjustment of voltage. On-load tap-changers are widely used in transformers of various voltage levels at present. The safe and reliable operation of on-load tap-changers is an important factor to ensure the stable operation of the power grid. [0003] At present, most of the on-load tap-changers are of purely mechanical structure, and the purpose of extinguishing the switching arc is achieved by vacuum bag or oil immersion. However, due to the complex structure o...

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): G05B19/042
CPCG05B19/0423G05B2219/25257
Inventor 贺振宇路建良张升杨卫刚李霄唐茹彬武思捷
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD