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Series gap lightning arrester

A technology of series gaps and lightning arresters, applied in the field of lightning arresters, can solve the problems of large leakage current and poor arc extinguishing effect

Active Publication Date: 2021-05-07
NANYANG POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The arc extinguishing effect of this type of series gap arrester is poor, and the leakage current is large under the condition of the lightning protection effect of the same specification.

Method used

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Embodiment Construction

[0026] The present invention will be described in the form of embodiments below in conjunction with the accompanying drawings, so as to assist those skilled in the art to understand and realize the present invention. Unless otherwise stated, the following embodiments and technical terms therein should not be understood without departing from the background of technical knowledge in this technical field.

[0027] In the present invention, the two conductors at both ends of the gas discharge channel are A conductor and B conductor respectively.

[0028] The potential difference formula between the two plates of a parallel plate capacitor

[0029]

[0030] In the formula, U AB is the potential difference loaded between the two plates of the parallel plate capacitor, q is the amount of charge stored in the parallel plate capacitor C, d is the distance between the two plates of the parallel plate capacitor, ε 0 is the relative permittivity, and S is the area of ​​each plate. ...

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Abstract

The invention discloses a series gap lightning arrester, which comprises an insulator and a plurality of electric conductor groups arranged along the main shaft direction of the insulator at intervals, wherein two adjacent electric conductor groups arranged along the main shaft direction of the insulator at intervals are respectively a first electric conductor group and a second electric conductor group, the first electric conductor group comprises A first electric conductors, the second electric conductor group comprises B second electric conductors, the sum of A and B is greater than or equal to 3, and the lengths of all gas discharge channels formed by the first electric conductors of the first electric conductor group and the second electric conductors of the second electric conductor group are equal. The arc extinguishing effect of the series gap lightning arrester can be improved and the leakage current of the series gap lightning arrester can be reduced under the condition of considering the lightning protection effect.

Description

technical field [0001] The invention relates to the field of lightning arresters, in particular to a series gap lightning arrester. Background technique [0002] A surge arrester is an electrical appliance used to protect electrical equipment from high transient overvoltage hazards and limit the freewheeling time and often limit the freewheeling amplitude. The existing surge arresters for transmission lines include zinc oxide arresters, series gap arresters and other types. [0003] Patent document CN110829183A describes a lightning protection device for power transmission lines, including lightning electrodes for electrically connecting transmission lines, grounding electrodes for electrically connecting ground wires, and lightning rods for maintaining the distance between lightning electrodes and grounding electrodes. Support the insulator and the lightning arrester arranged between the grounding electrode and the lightning-inducing electrode. The lightning arrester inclu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01T4/16H01T4/02H01T1/08H01C7/12H01C7/112
CPCH01T4/16H01T4/02H01T1/08H01C7/12H01C7/112
Inventor 罗道军先真王文明张亚涛周建军姚楠
Owner NANYANG POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER
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