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A super/ultra high voltage sf 6 Gas-insulated wall-piercing bushing and its insulating support structure

A technology of gas insulation and wall bushing, which is applied in the direction of electrical components and can solve problems such as flashover

Active Publication Date: 2020-10-27
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of super / extreme high voltage SF 6 Gas-insulated wall-piercing bushing and its insulating support structure to solve the problem of flashover of EHV / UHV wall-piercing bushings in the prior art

Method used

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  • A super/ultra high voltage sf <sub>6</sub> Gas-insulated wall-piercing bushing and its insulating support structure
  • A super/ultra high voltage sf <sub>6</sub> Gas-insulated wall-piercing bushing and its insulating support structure
  • A super/ultra high voltage sf <sub>6</sub> Gas-insulated wall-piercing bushing and its insulating support structure

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Embodiment Construction

[0024] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0025] Such as Figure 1(a) ~ Figure 1(d) as well as figure 2 As shown, the ultra / ultra-high voltage SF of the present invention 6 The insulating support structure of the gas-insulated wall-piercing bushing includes the inner shielding electrode 1 of the bushing, the first central current-carrying conductor 3 and the hollow composite insulator 6, and the inner shielding electrode 1 of the bushing is installed on the hollow composite insulator 6 and the first central current-carrying conductor 3 Between them, the first central current-carrying conductor 3 is arranged along the axis of the casing inner shielding electrode 1 and the hollow composite insulator 6, and at least one post insulator 2 is provided on both sides of the casing inner shielding electrode 1, and the post insulator 2 is located on the first Between the central current-carrying conductor 3 and the h...

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Abstract

The invention discloses an ultra / extra-high voltage SF6 gas insulated wall bushing and an insulating support structure thereof. The ultra / extra-high voltage SF6 gas insulated wall bushing comprises abushing inner shielding electrode, a first central current-carrying conductor and an air composite insulator. The bushing inner shielding electrode is arranged on the air composite insulator. The first central current-carrying conductor is arranged along the axes of the bushing inner shielding electrode and the air composite insulator. At least one post insulator is arranged on each of the two sides of the outside of the bushing inner shielding electrode. The post insulators are respectively arranged on the two sides of the outside of the bushing inner shielding electrode and are positioned between the first central current-carrying conductor and the air composite insulator. The structure can realize electrical insulation and mechanical support effects on the central conductor in the bushing, reduce the fault probability of flashover discharge and the like of the post insulators, significantly reduce the deformation of the central conductor of the bushing, and improve the safety and reliability of long-term operation of the ultra / extra-high voltage SF6 gas insulated wall bushing.

Description

technical field [0001] The invention belongs to the field of electrical insulation structure design and optimization design of ultra / ultra-high voltage AC and DC transmission equipment, and specifically relates to an ultra / ultra-high voltage SF 6 Gas-insulated wall bushing and its insulating support structure. Background technique [0002] The EHV / UHV wall bushing bears full voltage, full current and strong mechanical load during long-term operation, and there are great electrical, thermal and mechanical stresses inside. EHV / UHV SF 6 Gas insulated wall bushing has simple structure, good heat dissipation performance, strong flow capacity, and convenient operation and maintenance. However, its overall size is long, heavy, and large deflection, so reliable mechanical support for the central conductor is required. The traditional bushing support structure is arranged between the central conductor and the through-wall flange. Since the through-wall flange is grounded, the suppo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G3/22
CPCH02G3/22
Inventor 彭宗仁王青于谢更生
Owner XI AN JIAOTONG UNIV