Intelligent combined protection assembly of trigger type overvoltage protection gap with pulsed arc pollution prevention structure

A technology for protecting gaps and pulse arcs, applied in the field of arresters, can solve problems such as performance indicators need to be improved, and achieve the effects of improving service life, low impulse breakdown voltage, and strong release capability.

Active Publication Date: 2021-11-09
XI AN JIAOTONG UNIV
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Problems solved by technology

At present, the outer series gap arrester can not meet the above performance requirements, and its performance index still needs to be improved

Method used

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  • Intelligent combined protection assembly of trigger type overvoltage protection gap with pulsed arc pollution prevention structure
  • Intelligent combined protection assembly of trigger type overvoltage protection gap with pulsed arc pollution prevention structure
  • Intelligent combined protection assembly of trigger type overvoltage protection gap with pulsed arc pollution prevention structure

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Embodiment Construction

[0022] The structural principle and working principle of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] see figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 . The invention is composed of a trigger type overvoltage protection gap with an anti-pulse arc pollution structure connected in series with a zinc oxide arrester unit;

[0024] Among them, the structure of the triggered overvoltage protection gap with pulse arc pollution prevention structure is as follows: figure 2 ,or image 3 As shown, the zinc oxide arrester unit structure is as follows Figure 4 shown. The lower electrode of the triggered overvoltage protection gap is connected to the upper electrode of the zinc oxide arrester unit, the upper electrode of the triggered overvoltage protection gap is connected to the upper end of the protected electrical equipment, and the lower electrode of the zinc oxide arrester...

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Abstract

The invention discloses an intelligent combined protection assembly of a trigger type overvoltage protection gap with a pulsed arc pollution prevention structure. The intelligent combined protection assembly is formed by connecting the trigger type overvoltage protection gap with the pollution prevention structure and a zinc oxide lightning arrester unit in series, wherein an upper electrode, a lower electrode and an annular trigger electrode of the trigger type overvoltage protection gap are sealed in a gas or vacuum environment, and the annular trigger electrode and the lower electrode are triggered by an insulating medium material and are provided with a pulsed arc pollution prevention structure. Due to the fact that a trigger of the trigger type overvoltage protection gap has relatively high initial trigger carrier release capability, the pulse breakdown voltage of the overvoltage protection gap is reduced while the direct current withstand voltage is not influenced by the trigger type overvoltage protection gap, and the trigger type overvoltage protection gap has an extremely fast lightning overvoltage response characteristic; and the trigger mode between the annular trigger electrode and the lower electrode is surface discharge trigger, and the surface flashover discharge interface is perpendicular to the surface of the main electrode, so that the service life of the trigger type overvoltage protection gap can be greatly prolonged.

Description

technical field [0001] The invention relates to a high-performance surge arrester for out-of-band series overvoltage protection gaps in the fields of electric power, high-speed information railway power transmission, etc., in particular to an intelligent combined protection component with a trigger type overvoltage protection gap with a pulse arc pollution prevention structure. Background technique [0002] The arrester of the outer string gap is an important new overvoltage protection device for AC and DC power transmission and high-speed information railway systems. Most of the discharge gaps of the outer string gap arresters at home and abroad work in the atmospheric environment. The disadvantage of the discharge gap in the atmospheric environment is The impact breakdown voltage is high, the dispersion is large, and it is easily affected by the environment, especially when the air humidity is high or in rainy weather, such as a 10kV power transmission system, the protectiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04H02H9/00
CPCH02H9/045H02H9/044H02H9/005
Inventor 姚学玲雷望龙孙晋茹陈景亮乐杨晶
Owner XI AN JIAOTONG UNIV
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