A direct connection device between three-phase common box gis busbar and transformer

Abstract

The invention discloses a direct connection device for a three-phase enclosed GIS bus and a transformer. The direct connection device comprises a transformer bottom plate, oil-gas casings, a disk insulator for supporting the GIS bus, and a GIS shell arranged between the transformer bottom plate and the disk insulator, wherein the oil-gas casings and the transformer bottom plate are integrally molded; the oil-gas casings are provided with transfer conductors which are used for making the oil-gas casings correspond to the positions of corresponding bus conductors, so that the oil-gas casings and the corresponding bus conductors are directly connected through corresponding middle conductors; and a fracture for installing one middle conductor is formed between each casing conductor and the corresponding bus conductor. The middle conductors are detachable, so that the middle conductors are not installed in a test. The direct connection device has obvious fractures, so that mutual influence is avoided in the test; and after the test, conductive connection of the enclosed transformer and the enclosed GIS bus can be achieved through the transfer conductors.

Description

technical field [0001] The invention relates to the technical field of switchgear, in particular to a direct connection device between a three-phase common box GIS bus and a transformer. Background technique [0002] GIS equipment is a gas-insulated metal-enclosed switchgear, which is composed of a circuit breaker, a disconnector, and a grounding switch. [0003] Guan and other components are directly connected together, and all are sealed in a grounded metal shell, which is filled with a certain pressure of SF6 gas [0004] As insulation and arc extinguishing medium. In the design process of substation GIS, there are more and more cases of direct connection with transformers. However, due to the large difference between GIS equipment and transformer field test items, many items cannot be connected together, resulting in inconvenient field installation and testing. [0005] Chinese patent CN 201708450U (authorized announcement date is 2011.01.12) discloses a direct connect...

AI Technical Summary

Problems solved by technology

In the design process of substation GIS, there are more and more cases of direct connection with transformers. However, due to the large difference between GIS equipment and transformer field test items, many items cannot be connected together, resulting in inconvenient field installation and testing.

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