Solid insulation ring main unit

Abstract

The invention provides a solid insulation ring main unit. The solid insulation ring main unit comprises a cabinet body, an operation panel, a top-end bus interface, a sealed isolation room, a solid-sealed polar pole and a fuse wire barrel; the solid-sealed polar pole and the fuse wire barrel are arranged in the sealed isolation room; and the fuse wire barrel is arranged in the horizontal direction so as to bring convenience to replacement of the fuse wire barrel. A front bearing frame in the fuse wire barrel comprises a base; a tulip contact is arranged at the interior of the base; a stressed spring is arranged at the periphery of the tulip contact; a rear support frame in the fuse wire barrel comprises a base; a C-shaped socket is arranged at the interior of the base; a stressed elastic sheet is arranged at the periphery of the C-shaped socket; the base is a silica gel insulating sleeve; the fuse wire barrel has such the structural design that can efficiently reduce generation of partial discharge and also can efficiently prevent moisture from entering the fuse wire barrel, so that the safety of long-term operation is improved. In addition, the solid insulation ring main unit provided by the invention has the advantages of being fully insulated, long in service life, free for maintenance, small in occupied space, safe and reliable, unaffected by the environment and the like.

Description

technical field [0001] The invention relates to power transmission and distribution equipment in a power system, in particular to a solid insulation ring network cabinet equipment. Background technique [0002] The ring network refers to the ring distribution network, that is, the main power supply line forms a closed ring, and the power supply supplies power to the ring main line, and then distributes power from the main line through high-voltage switches one by one. The advantage of this is that each power distribution branch can get power from its left side main line, and can get power from its right side main line. When the left main fails, it continues to receive power from the right main, and when the right main fails, it continues to receive power from the left main, so that although the main power supply is single, But from each power distribution branch, it can get benefits similar to dual-circuit power supply, thereby improving the reliability of power supply. ...

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned invention patent 1 provides a switchgear with good insulation performance and small volume; the above-mentioned invention patent 2 discloses a solid insulated ring network cabinet, which solves the problem of using a direct drive device to drive conductive contacts in a straight line in the prior art. Moving to a different station leads to technical problems that are prone to misoperation, thereby effectively ensuring the normal operation of the isolation and grounding switchgear and the high-voltage switch unit

However, the network cabinets in the above two invention patents are easily affected by the environment during the working process, which will affect the safety of the operation of the network cabinets

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