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GIL equipment standard unit based on novel internal structure and implementation method

A technology of internal structure and standard unit, applied in the field of electric power, can solve problems such as the impact of sliding three-pillar insulators on electrical performance and grounding reliability, adverse social impacts, and economic losses, so as to improve equipment operation reliability, avoid discharge failures, reduce The effect of back-and-forth wear

Active Publication Date: 2020-08-07
EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID
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Problems solved by technology

The copper electrodes on the legs of the sliding three-pillar are connected to the inner wall of the GIL pipeline. Affected by the thermal expansion and contraction of the GIL equipment, the fixed three-pillar insulator and the long conductive rod will move back and forth following the deformation of the GIL pipeline. Since the sliding three-pillar insulator is also installed on the On the same long conductive rod, the copper electrode of the sliding three-pillar insulator will also produce back-and-forth sliding wear, which will affect the electrical performance and grounding reliability of the sliding three-pillar insulator. In actual engineering, there have been many discharge faults of the sliding three-pillar insulator. Cause huge economic loss and adverse social impact

Method used

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  • GIL equipment standard unit based on novel internal structure and implementation method

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Embodiment Construction

[0025] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Such as figure 1 As shown, a GIL equipment standard unit based on a new internal structure in this embodiment mainly includes a GIL pipe 1 , a single-post insulator assembly 2 , a long conductive rod 3 and a sliding three-post insulator assembly 4 .

[0027] The length of the GIL pipeline 1 is set to 12-18m. The left end of the long conductive rod 3 is supported by a single-pillar insulator assembly 2, and the middle part of the long conductive rod 3 is supported by one or two sliding three-pillar insulator assemblies.

[0028] The single post insulator assembly 2 includes a single post insulator 21 , a short conductive rod 22 and a metal sealing cover plate 23 . The two sides of the short conductive rod 22 are provided wi...

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Abstract

The invention discloses a GIL equipment standard unit based on a novel internal structure. The GIL equipment standard unit comprises a GIL pipeline, a single post insulator assembly, a long conductingrod and a sliding three-post insulator assembly, wherein at least one end of the long conducting rod is supported by the single post insulator assembly, and the middle portion of the long conductingrod is supported by at least one sliding three-post insulator assembly. The invention also discloses a method for realizing shell deformation without influencing sliding of the three-post insulator byadopting the GIL standard unit. According to the invention, the contact seats at the two ends of the short conducting rod are used for absorbing the heated deformation of the GIL shell, so that the back-and-forth abrasion of the grounding copper electrode is greatly reduced, the grounding reliability of the copper electrode of the sliding three-post insulator is improved, the discharge fault of the sliding three-post insulator is avoided, and the operation reliability of equipment is improved.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a GIL equipment standard unit based on a new internal structure, a GIL equipment and an implementation method. Background technique [0002] Gas-insulated metal-enclosed transmission lines (hereinafter referred to as GIL) have been widely used in key power grid projects. At present, the mainstream technical route of GIL equipment uses fixed three-post insulators and sliding three-post insulators. The fixed three-post insulators and sliding three-post insulators are installed on The same long conductive rod. The copper electrodes on the legs of the sliding three-pillar are connected to the inner wall of the GIL pipeline. Affected by the thermal expansion and contraction of the GIL equipment, the fixed three-pillar insulator and the long conductive rod will move back and forth following the deformation of the GIL pipeline. Since the sliding three-pillar insulator is also in...

Claims

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Application Information

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IPC IPC(8): H02G15/20H01B17/14H01B17/16H01B17/38H01B17/46
CPCH02G15/20H01B17/145H01B17/38H01B17/16H01B17/46
Inventor 黎卫国张长虹杨旭黄忠康楚金伟彭翔
Owner EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID
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