Standard unit of gil equipment based on new internal structure and its realization method

Abstract

The invention discloses a GIL equipment standard unit based on a new type of internal structure, including a GIL pipeline, a single-pillar insulator assembly, a long conductive rod and a sliding three-pillar insulator assembly; at least one end of the long conductive rod is supported by a single-pillar insulator assembly, and the long conductive The middle of the pole is supported by at least one sliding three-post insulator assembly. The invention also discloses a method for using the above-mentioned GIL standard unit to realize that the shell deformation does not affect the sliding three-pillar insulator. The invention utilizes the contact seats at both ends of the short conductive rod to absorb the thermal deformation of the GIL shell, greatly reduces the back-and-forth wear of the grounding copper electrode, improves the grounding reliability of the copper electrode of the sliding three-pillar insulator, avoids the discharge failure of the sliding three-pillar insulator, and improves the equipment. operational reliability.

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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