Arrester for electrified railway traction power supply system

A traction power supply system, electrified railway technology, applied in the direction of electrical components, cable installation, cable space arrangement/configuration, etc., can solve the problem of no lightning protection measures, and achieve simple installation, good economy, safe and reliable operation. Effect

Inactive Publication Date: 2010-06-09
SHANDONG XUNSHI ELECTRIC
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0002] In recent years, my country's electrified railway has developed very rapidly. The electrification of old lines, the operation of passenger dedicated lines, and the start of the Beijing-Shanghai high-speed railway have all put forward higher requirements for the reliability of the traction power supply system. At present, my country's existing electrification There are basically no reliable lightning protection measures for railways

Method used

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  • Arrester for electrified railway traction power supply system
  • Arrester for electrified railway traction power supply system
  • Arrester for electrified railway traction power supply system

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Embodiment Construction

[0020] Specific embodiments of the present invention will be specifically described below with reference to the accompanying drawings.

[0021] Such as figure 1 As shown, a metal oxide arrester with an air gap for protecting the AC electrified railway traction power supply system includes a cross arm 1, an arrester body 2, and an air gap 3. The metal cross arm 1 can use angle steel and be fixed on the metal pole tower shoulder frame 9, the cross arm 1 and the tower shoulder frame 9 are firmly electrically connected by bolts; the arrester body 2 is suspended and fixed on the cross arm 1, the boat-shaped electrode 4 is assembled on the lower end of the arrester body 2, and the ring electrode 5 is assembled on the line wire. The electrode 5 is firmly electrically connected to the line, the boat-shaped electrode 4 is firmly electrically connected to the arrester body 2, and an air gap 3 is formed between the ring electrode 5 and the boat-shaped electrode 4. The length D of the air...

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Abstract

The invention discloses a metal oxide arrester which is used for protecting an alternating current electrified railway traction power supply system, is provided with an air gap, and comprises a cross arm and an arrester body, wherein the cross arm is fixed on a pole tower shoulder support, and the arrester body is suspended and fixed on the cross arm; in addition, the arrester also comprises a high voltage electrode and a low voltage electrode, wherein the low voltage electrode is assembled at the lower end of the arrester body and is firmly electrically connected with the arrester body, the high voltage electrode is assembled on a line lead and is firmly electrically connected with the line lead, and an air gap is formed between the high voltage electrode and the low voltage electrode. When overvoltage happens to lighting, the arrester can reliably act; after the lightning passes, the arrester easily restores insulation, has good stability, basically needs no maintenance and can be used on a 27.5kV electrified railway F line suspension insulator to effectively prevent the problem of line break of a traction power supply system due to lightning strike.

Description

technical field [0001] The invention relates to an electrified railway traction power supply system, in particular to a metal oxide lightning arrester with an air gap for the AC electrified railway traction power supply system, which is especially suitable for use on the suspension insulator of the F line of the 27.5KV electrified railway. Background technique [0002] In recent years, my country's electrified railway has developed very rapidly. The electrification of old lines, the operation of passenger dedicated lines, and the start of the Beijing-Shanghai high-speed railway have all put forward higher requirements for the reliability of the traction power supply system. At present, my country's existing electrification There are basically no reliable lightning protection measures for railways. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the technical problem to be solved by the present invention is: on the basis of the mature and reli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G13/00H02G7/20
Inventor 尹彬
Owner SHANDONG XUNSHI ELECTRIC
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