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

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...

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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

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