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Self-extinguishing arc device

A technology of self-extinguishing and striking arc angle, which is applied in the direction of electrical components, spark gaps, spark gap parts, etc., can solve the problems of self-extinguishing arc difficulty and low life of arc angle, and achieve shortened burning time and excellent insulation performance , Improve the effect of safety and reliability

Active Publication Date: 2019-09-10
SOUTHWEST JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a self-extinguishing arc device to solve the problem that the existing high-voltage DC grounding electrode line is difficult to self-extinguish the arc, resulting in low life of the arcing angle

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0031] Please refer to figure 1 , a self-extinguishing arc device, comprising: an insulator string 10, an arc striking angle 20, a liquefied electronegative gas storage device 30, a current transformer 40, a power supply and a controller. The two ends of the insulator string 10 are respectively connected to the arcing angle 20 through the rotating device 60. The arcing angles 20 at the two ends of the insulator string 10 correspond to each other. Under the action of the rotating device 60, the corresponding arcing angle 20 rotates in opposite directions, so that The distance between the contacts of the corresponding two arcing angles 20 is increased to realize pulling and extinguishing the arc. In this embodiment, the corner angle of the arcing angle 20 is 145°, and the distance between the contacts corresponding to the arcing angle 20 is 70% of the overall length of the insulator string 10; the controller adopts STM23F407IGT6. In other embodiments of the present invention, t...

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Abstract

The invention discloses a self-extinguishing arc device, and belongs to the technical field of power transmission. The self-extinguishing arc device comprises an insulation sub-string, arcing horns, aliquid electric negative gas storage device, a current transformer, a power supply and a controller, wherein arcing horns are oppositely arranged at two ends of the insulation sub-string, the liquidelectric negative gas storage device is arranged at contacts of the arcing horns and is hollow, electric sprayers are arranged at an outer side of the liquid electric negative gas storage device and communicate with a cavity of the liquid electric negative gas storage device, the electric sprayers on the corresponding arcing horns are arranged opposite to each other, the current transformer sleeves the arcing horns, the power source is electrically connected with the electric sprayer, and the controller is connected with the current transformer and the power supply in a communication way. By the self-extinguishing arc device, various arc extinguishing modes such as electric negative gas arc extinguishing, cooling arc extinguishing and arc blowing are achieved by the liquid electric negative gas storage device, and the arc extinguishing mode is effective and reliable.

Description

technical field [0001] The invention relates to the technical field of power transmission, in particular to a self-extinguishing arc device. Background technique [0002] UHV DC transmission system DC grounding pole, DC grounding pole line has the characteristics of large transmission current, low line voltage, low lightning resistance level, and requires self-extinguishing arc capability after a ground fault occurs. Since the grounding electrode line transmits DC, once the gap breaks down, the fault current will be a stable DC current. Since there is no periodic zero-crossing point, it is difficult to self-extinguish the arc. For the high-voltage DC grounding electrode line, the increase of the current and the increase of the working voltage make it more difficult to extinguish the arc, and the arc burns the insulator and the arc angle contact for a long time, which will reduce the service life of the insulator and the arc angle contact. Contents of the invention [0003...

Claims

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Application Information

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IPC IPC(8): H01B17/46H01B17/48H01T1/02H01T1/08
CPCH01B17/46H01B17/48H01T1/02H01T1/08
Inventor 张血琴张星海李沛东郭裕钧刘凯吴广宁高国强魏文赋
Owner SOUTHWEST JIAOTONG UNIV
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