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

A high-voltage DC grounding switch and its static contact assembly

A grounding switch and high-voltage DC technology, which is applied in the field of high-voltage DC grounding switches and their static contact components, can solve the problems of high cost and difficulty in manufacturing grounding switches.

Active Publication Date: 2017-09-01
STATE GRID CORP OF CHINA +3
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a static contact assembly of a high-voltage direct current earthing switch to solve the problems of difficulty in manufacturing and high cost of the existing earthing switch; DC grounding switch

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 high-voltage DC grounding switch and its static contact assembly
  • A high-voltage DC grounding switch and its static contact assembly
  • A high-voltage DC grounding switch and its static contact assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Embodiments of the high voltage direct current grounding switch of the present invention: as Figure 1-6 As shown, it mainly includes a base 8, a moving contact 12, a static contact 2, a grounding knife 7 and an operating mechanism 4. The upper end of the static contact 2 is fixed with a pipe bus clip 6, through which the static The contact 2 is directly positioned and suspended on the pipe busbar 1, and a shielding system is also provided on the pipe busbar clamp 6. The shielding system is composed of an upper pressure equalizing ring 5 and a lower pressure equalizing ring 3, wherein the upper pressure equalizing ring 5 is fixed on the pipe busbar The top of the bus clamp 6, the lower equalizing ring 3 is fixed on the bottom of the tube bus clamp 6, the static contact 2, the tube bus clamp 6, the upper equalizing ring 5 and the lower equalizing ring 3 form a static contact assembly; the static contact 2. It includes a cylindrical guide cover 21, the lower end of which ...

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 high-voltage direct current grounding switch and its static contact assembly. The grounding switch includes a base and dynamic and static contacts. The base is hinged with a foldable grounding knife that can swing up and down. The moving contact is fixed On the top of the grounding knife, the static contact is located above the grounding knife and is plugged with the moving contact when the grounding knife is straightened to achieve closing. The grounding switch also includes a The static contact fixes the pipe busbar clamp suspended on the pipe busbar, the top of the pipe busbar clamp is fixedly connected with the upper pressure equalizing ring, and the bottom is fixedly connected with the lower pressure equalizing ring, and the static contact is located at the center of the upper and lower pressure equalizing rings on the line. Since the static contact is directly fixed and suspended on the pipe bus through the pipe bus clip, the post insulator used to support the static contact can be omitted, which reduces the cost and avoids the need to increase the insulator due to the high creepage distance requirements of the insulator in the DC system manufacturing difficulty.

Description

technical field [0001] The invention relates to a high-voltage DC grounding switch and its static contact assembly. Background technique [0002] DC transmission has the characteristics of long transmission distance, large transmission capacity, small line loss, and easy control and adjustment. It has been more and more widely used in power systems. The transformation from traditional local balance to overall balance will play a major role. At the same time, the demand for DC grounding switches used in DC transmission projects has also increased sharply. The traditional DC grounding switch is mainly divided into two types, one is the single-arm straight swing type, and the other is the single-arm folding and plug-in type. The disadvantage of the single-arm straight swing type is that it is , to ensure that the grounding knife has enough swing space, occupy a large area of ​​the power station, increase the construction cost of the power station, and the single-arm folding pl...

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): H01H31/26H01H31/02H01H3/40
CPCH01H31/28H01H31/003
Inventor 王占杰孙玉洲马永旭胡延涛夏立国
Owner STATE GRID CORP OF CHINA