A Gap Switch Parallel Control Type High Strength Metal Oxide Surge Arrester

A gap switch and lightning arrester technology, which is applied in the field of lightning arresters, can solve problems such as difficult dispersion of gap discharge voltage and poor reliability of lightning arresters, and achieve the effects of improving protection level and operation reliability, reducing windward area, and improving bending strength

Active Publication Date: 2019-11-08
CHINA ELECTRIC POWER RES INST +1
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the 1980s, researchers at home and abroad have discussed and studied the situation of the series and parallel discharge gaps of metal oxide arresters, but it is difficult to solve the dispersion of the gap discharge voltage, and the reliability of the arrester is poor.

Method used

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  • A Gap Switch Parallel Control Type High Strength Metal Oxide Surge Arrester
  • A Gap Switch Parallel Control Type High Strength Metal Oxide Surge Arrester
  • A Gap Switch Parallel Control Type High Strength Metal Oxide Surge Arrester

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Embodiment Construction

[0036] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0037] In order to thoroughly understand the embodiments of the present invention, the detailed structure will be set forth in the following description. Obviously, the practice of the embodiments of the invention is not limited to specific details familiar to those skilled in the art. Preferred embodiments of the present invention are described in detail below, however, the present invention may have other embodiments besides these detailed descriptions.

[0038] The overall structure of the gap switch parallel control type high-strength metal oxide arrester provided by the present invention is as follows: figure 1 shown. The arrester includes unit sections connected in series in the vertical direction, and the unit sections include an external insulating sleeve and a metal oxide resistance sheet installed in the insu...

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Abstract

The invention provides a gap switch parallel control type high-strength metal oxide lightning arrester. The lightning arrester comprises unit sections which are sequentially connected in series in a vertical direction, wherein each unit section comprises an external insulation sleeve and a metal oxide resistance sheet, the metal oxide resistance sheet is arranged in the insulation sleeve, two ends of a bottom unit section of the lightning arrester are connected in parallel with a control unit, the control unit comprises a controller as well as a gap and a rapid switch which are mutually parallel, the rapid switch and the gap are both connected with the controller, the controller is used for detecting voltages of two ends of the lightning arrester and simultaneously triggering the gap to be conducted and the rapid switch to be switched on according to the detected voltage values, and the bottom unit section is short-circuited when the gap is conducted or the rapid switch is switched on. With the lightning arrester provided by the invention, the residual voltage of the lightning arrester can be reduced on the basis of maintaining a performance parameter of the metal oxide resistance sheet for an existing lightning arrester unchanged, and the protection level of the lightning arrester is improved.

Description

technical field [0001] The invention relates to a lightning arrester, in particular to a gap switch parallel control type high-strength metal oxide lightning arrester. Background technique [0002] Starting from the ultra-high voltage (330kV ~ 750kV) power transmission system, the operating overvoltage has already played a controlling role in the insulation level of the power transmission and transformation equipment. The limit is getting lower and lower. In EHV and UHV transmission systems, the operating impulse discharge voltage of the air gap presents a saturation characteristic, and the operating overvoltage level has a greater impact on the cost and manufacturing difficulty of power transmission and transformation equipment. Therefore, it is necessary to deeply reduce the operating overvoltage multiple and select equipment reasonably Insulation level is very necessary. [0003] Surge arresters are the main devices for overvoltage protection in power systems. The arre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01C7/12
CPCH01C7/12H01C7/126
Inventor 陈维江陈秀娟时卫东李志兵贺子鸣
Owner CHINA ELECTRIC POWER RES INST
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