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Discharge gap device with voltage-equalizing rings

A discharge gap and voltage equalizing ring technology, applied in circuits, electrical components, insulators, etc., can solve the problems of low arc ignition angle, unstable discharge voltage, poor arc extinguishing ability, etc., and achieve good arc resistance and arc extinguishing performance. The effect of stable discharge voltage and long service life

Active Publication Date: 2013-10-02
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In order to improve the safety of the transmission line, reduce the flashover that occurs along the insulating surface during overvoltage, and the burn of the insulator surface caused by the flashover causes the insulation performance to decline, a voltage equalizing ring or an arc striking angle is often set at both ends of the insulator, and the arc striking angle is The cost is low, but the discharge voltage is unstable and the arc extinguishing ability is poor. If the circumference of the uniform ring is small, the discharge is easy to burn the insulator. If the circumference is large, the cost is high, and the dry arc distance between phases will be reduced if the circumference is too large.

Method used

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Examples

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Embodiment Construction

[0028] The invention is a discharge gap device with a pressure equalizing ring, such as Figure 1-Figure 4 As shown, the present invention is mainly composed of a high-voltage arc striking ring 1 , an equalizing arc striking angle 2 , a first fastener 5 and a second fastener 6 . Specifically, two symmetrically connected high-voltage arcing rings 1 and two symmetrically connected voltage equalizing arcing angles 2 are symmetrically connected up and down on the fittings at both ends of the composite insulator.

[0029] like Figure 6 as shown, Figure 6 It is a structural schematic diagram of the medium and high voltage arc starting ring of the present invention. The shape of the high-voltage arc-starting ring 1 is an open ellipse, and one end of the opening is a mounting handle 11. Under the action of the first fastener 5, the high-voltage arc-starting ring 1 is horizontally symmetrical to the other high-voltage arc-starting ring 1 Installed on the high voltage end of the in...

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Abstract

The invention relates to an insulator protection device and belongs to the field of electric protection in an electric power grid, and particularly, relates to a discharge gap device with voltage-equalizing rings. The discharge gap device can prevent flashover on the surface of an insulator. With the discharge gap device adopted, the problem of corona produced by a composite insulator under overvoltage and the problem of the burning of the insulator caused by the flashover on the surface of the insulator can be solved. High-voltage arc-striking rings and voltage-equalizing arcing horns which are in longitudinal symmetry are connected on fittings at two ends of a composite insulator, such that the discharge gap device can be formed. The discharge gap device of the invention is directly fixed on the fittings at the two ends of the composite insulator and is suitable for composite insulators; and the discharge gap device is a novel discharge gap device which is advantageous in quick installation, voltage-equalizing and anti-corona properties, stable discharge voltage, excellent arc-resistant arc-distinguishing performances and long service life.

Description

technical field [0001] The invention relates to an insulator protection device, which belongs to the field of electrical protection in power networks, in particular to a discharge gap device with a voltage equalizing ring, which is a discharge gap device that prevents flashover on the surface of an insulator, and can not only solve the problem of recombination under overvoltage The corona generated by the insulator can also solve the problem of burning the insulator due to flashover on the surface of the composite insulator. Background technique [0002] In order to improve the safety of the transmission line, reduce the flashover that occurs along the insulating surface during overvoltage, and the burn of the insulator surface caused by the flashover causes the insulation performance to decline, a voltage equalizing ring or an arc striking angle is often set at both ends of the insulator, and the arc striking angle is The cost is low, but the discharge voltage is unstable a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B17/42H01B17/46H01B17/48
Inventor 韩洪刚李胜川杜彦强鲁旭臣毕海涛杨鹤李爽冯占稳赵勇超
Owner STATE GRID CORP OF CHINA
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