Outdoor 2 multiply 27.5 kV solid-sealing vacuum modular device of electrified railway

Abstract

An outdoor 2 multiply 27.5 kV solid-sealing vacuum modular device of electrified railway includes brackets, two connection branches mounted on the brackets that are parallel and independent to each other and an integrated automation control box, a bipolar solid-sealing disjunctor is mounted onto middle part of the brackets, an outgoing line connection terminal is located on a first solid-sealing strut type transformer, moving contact of a first bipolar disconnector is located on bracket of the first solid-sealing strut type transformer, between the first bipolar disconnector and the disjunctoris provided with current transformer, stationary contact of the first bipolar disconnector is located on the current transformer which is connected with a single polar solid-sealing disjunctor; an incoming line connection terminal is located on a second solid-sealing strut type transformer, moving contact of a second bipolar disconnector is located on the second solid-sealing strut type transformer, stationary contact of the second bipolar disconnector is located on a solie-sealing polar of the disjunctor. The invention can reduce floor space efficiently and capitalized cost, and has good reliability and good prosucts reliability, which is convenient to maintain.

Description

technical field

[0001] The invention relates to a special switchgear for 2×27.5kV electrified railway in AT power supply mode. Background technique

[0002] At present, the switchgear of electrified railway traction substations, divisional substations and AT substations are 2×27.5kV circuit breakers, voltage transformers, current transformers, bipolar isolating switches and other main equipment except for feeder bipolar isolating switches and anti-lightning coils. Arranged outdoors, others are arranged indoors with GIS inflatable switchgear, all of which need to be equipped with production houses to meet product use requirements. The 27.5kV incoming and outgoing lines in the high-voltage room adopt the cable entry (exit) method. Since there are many high-voltage cables in the incoming and outgoing lines, it is necessary to set up a cable interlayer under the production house to meet the cable laying requirements. Although this arrangement has high power supply reliability, ...

Examples

Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings.

[0034] refer to Figure 1 ~ Figure 4, an outdoor 2×27.5kV solid-sealed vacuum modular electrical appliance for electrified railways, including a bracket 9, two parallel and independent connecting branches installed on the bracket 9, and an integrated automation control box 8, the The connecting branch includes a bipolar sealed vacuum circuit breaker 4, a first bipolar isolating switch 3, a second bipolar isolating switch 26, a solid-sealed prop current transformer 5, a first solid-sealed prop transformer 2, a second Two solid-sealed post-type transformers 25, incoming line connection terminals 24, and outgoing line connection terminals 1; the bipolar solid-sealed circuit breaker 4 is installed in the middle of the bracket 9, and the incoming line connection terminals 24 and outgoing line connection terminals 1 are respectively located Both sides of the bracket 9; the ...

technical field

[0001] The invention relates to a special switchgear for 2×27.5kV electrified railway in AT power supply mode. Background technique

[0002] At present, the switchgear of electrified railway traction substations, divisional substations and AT substations are 2×27.5kV circuit breakers, voltage transformers, current transformers, bipolar isolating switches and other main equipment except for feeder bipolar isolating switches and anti-lightning coils. Arranged outdoors, others are arranged indoors with GIS inflatable switchgear, all of which need to be equipped with production houses to meet product use requirements. The 27.5kV incoming and outgoing lines in the high-voltage room adopt the cable entry (exit) method. Since there are many high-voltage cables in the incoming and outgoing lines, it is necessary to set up a cable interlayer under the production house to meet the cable laying requirements. Although this arrangement has high power supply reliability, ...

Examples

Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings.

[0034] refer to Figure 1 ~ Figure 4, an outdoor 2×27.5kV solid-sealed vacuum modular electrical appliance for electrified railways, including a bracket 9, two parallel and independent connecting branches installed on the bracket 9, and an integrated automation control box 8, the The connecting branch includes a bipolar sealed vacuum circuit breaker 4, a first bipolar isolating switch 3, a second bipolar isolating switch 26, a solid-sealed prop current transformer 5, a first solid-sealed prop transformer 2, a second Two solid-sealed post-type transformers 25, incoming line connection terminals 24, and outgoing line connection terminals 1; the bipolar solid-sealed circuit breaker 4 is installed in the middle of the bracket 9, and the incoming line connection terminals 24 and outgoing line connection terminals 1 are respectively located Both sides of the bracket 9; the ...

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