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Compact self-powered gap arc-extinguishing lightning protection device and preparation method thereof

A lightning protection device and gap technology, which is applied to overvoltage arresters, spark gaps, and spark gap components using spark gaps, can solve the problems of reliability and safety to be improved, simple structure of the arc extinguishing chamber, and current interrupting capability. limited and other problems, to achieve the effect of excellent ability to extinguish power-frequency freewheeling arc, broad application prospects, and stable arc extinguishing performance

Pending Publication Date: 2019-11-05
郭润生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing equipment of this type has a simple structure of the arc extinguishing chamber and limited current interruption capability, which makes the device bulky and difficult to install; moreover, there are still matching problems when installing and using different lines, and its reliability and safety need to be determined. improve

Method used

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  • Compact self-powered gap arc-extinguishing lightning protection device and preparation method thereof
  • Compact self-powered gap arc-extinguishing lightning protection device and preparation method thereof
  • Compact self-powered gap arc-extinguishing lightning protection device and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Such as figure 1 As shown, it is a compact self-energy gap arc extinguishing lightning protection device, which is composed of an upper arm and a lower arm 1 and an air gap 2 formed between the upper arm and the lower arm 1; as Figure 4 As shown, the upper arm is composed of one end of a transverse arm 3 and one end of a longitudinal arm 4 connected by a bolt 6, as Figure 5 As shown, the other end of the transverse arm 3 is connected to the upper end of the insulator string 5 through a diamond buckle 7, one end of the lower arm 1 is connected to the lower end of the insulator string through a diamond buckle 7, and the other end of the lower arm 1 is connected to the longitudinal arm An air gap 2 is formed between the other ends of 4; the length of the air gap 2 is 60mm; the lower arm 1 is made of galvanized steel rod, and its length is 700mm.

[0034] The transverse arm 3 and the longitudinal arm 4 are composed of a plurality of arc extinguishing chamber units 8 conn...

experiment example 1

[0040] The implementation effect of the compact self-energy gap arc extinguishing and lightning protection device of the present invention is further illustrated by the simulation experiment and the quenching impact arc test of the multi-chamber arc extinguishing structure.

[0041] 1. Simulation experiment

[0042] Use COMSOL Mutiphsics software to build a simulation model of the semi-closed self-energy arc extinguishing chamber structure, simulate and analyze the motion characteristics of the arc in the chamber, and verify the air blowing of the compact self-energy gap arc extinguishing lightning protection device prepared in Example 1 of the present invention For the effect of arc extinguishing, take Example 1 as experimental example A, and use a conventional gap arc extinguishing lightning protection device without a constriction structure as comparative example B.

[0043] Such as Figure 6 Shown is the time-varying curves of the airflow velocity in the chambers of A and...

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Abstract

The invention relates to the technical field of overvoltage protection devices, in particular to a compact self-powered gap arc-extinguishing lightning protection device and a preparation method thereof, which are applied to lightning overvoltage protection work of a distribution network line. The lightning protection device is composed of an upper arm, a lower arm and an air gap formed by the upper arm and the lower arm. The upper arm consists of a transverse arm and a longitudinal arm, the end parts of which are connected; the transverse arm and the longitudinal arm are composed of a plurality of arc-extinguishing chamber units connected in series and spherical electrodes packaged in the arc-extinguishing chamber units. Each arc extinguishing chamber unit is a cylindrical insulating shell, and two hemispherical chambers are embedded in the shell; a communicated gap is formed between the chambers, wherein one end of the gap is communicated with the outer wall of the shell, and the gapis gradually reduced in the direction from the gap to the outer wall of the shell to form a cone channel. Each arc-extinguishing chamber unit is processed and manufactured by a 3D printer. The devicehas excellent power frequency follow current arc extinguishing capacity, is more compact in structure, small in size, larger in interrupting current and more stable in arc extinguishing performance,and improves the reliability and safety of line operation.

Description

technical field [0001] The invention relates to the technical field of overvoltage protection devices, in particular to a compact self-energy gap arc extinguishing lightning protection device and a preparation method thereof, which are used in the protection work of lightning overvoltage of distribution network lines. Background technique [0002] When the thundercloud discharges to the ground, the rapid change of the electromagnetic field around the discharge channel will generate an induced overvoltage on the nearby overhead line. Thunderclouds may even directly hit distribution overhead lines, generating extremely high lightning overvoltages. When the lightning overvoltage exceeds a certain value, it will cause flashover or even disconnection of the distribution line, causing damage to the power supply network, which will directly affect the reliability of the power supply of the distribution system. Therefore, it is necessary to take protective measures against the ligh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01T1/08H01T4/10
CPCH01T1/08H01T4/10
Inventor 郭玥何彩红郝增铃郭磊于壮状郭润生
Owner 郭润生