CN215579594U

CN215579594U - Miniaturized double-bus double-subsection spacing structure

Info

Publication number: CN215579594U
Application number: CN202121491984.XU
Authority: CN
Inventors: 柳如见; 梁孝峰; 高瑞东; 沈晓松; 黄娇; 陈章丽; 李飞
Original assignee: Shandong Taikai High Volt Switchgear Co Ltd
Current assignee: Shandong Taikai High Volt Switchgear Co Ltd
Priority date: 2021-07-01
Filing date: 2021-07-01
Publication date: 2022-01-18
Anticipated expiration: 2031-07-01

Abstract

The utility model relates to the technical field of circuit construction, in particular to a miniaturized double-bus double-subsection spacing structure which comprises a first bus subsection spacing component and a second bus subsection spacing component, wherein the first bus subsection spacing component is arranged on the first bus subsection spacing component; the first bus subsection spacing assembly comprises a circuit breaker A, an isolating switch B, a maintenance grounding switch A, a maintenance grounding switch B, a current transformer A, a current transformer B, a first bus section and a first bus section; the second bus section spacing assembly comprises a circuit breaker B, an isolating switch C, an isolating switch D, a maintenance grounding switch C, a maintenance grounding switch D, a current transformer C, a current transformer D, a first bus section and a second bus section. The molded double-bus double-subsection spacing structure provided by the utility model can meet the installation requirement of the existing market on 252 kV combined electrical appliances.

Description

Miniaturized double-bus double-subsection spacing structure

Technical Field

The utility model relates to the technical field of circuit construction, in particular to a miniaturized double-bus double-subsection spacing structure.

Background

With the development of SF6 gas insulated metal enclosed combined electrical apparatus, the size required by the market for 252 KV combined electrical apparatus is smaller and smaller, and the space width is required to be less than 2000mm for indoor engineering; but current double generating line pair subsection interval arrangement structure is under construction, is limited by current transformer shell diameter and length direction's size, and the parameter range that circuit breaker quiet side CT can adapt to will be very narrow, and most parameter will can't satisfy the demand of installation, and then current transformer parameter's demand can't be satisfied to current arrangement structure.

SUMMERY OF THE UTILITY MODEL

Objects of the utility model

In order to solve the technical problems in the background art, the utility model provides a miniaturized double-bus double-subsection spacing structure which can meet the installation requirement of the existing market on 252 kV combined electrical appliances.

(II) technical scheme

The utility model provides a miniaturized double-bus double-subsection spacing structure which comprises a first bus subsection spacing component and a second bus subsection spacing component, wherein the first bus subsection spacing component is arranged on the first bus subsection spacing component;

the first bus subsection spacing assembly comprises a circuit breaker A, an isolating switch B, a maintenance grounding switch A, a maintenance grounding switch B, a current transformer A, a current transformer B, a first bus section and a first bus section;

a high-level side terminal of the circuit breaker A is sequentially connected with the current transformer A and the first bus section;

the low-level side terminal of the circuit breaker A is sequentially connected with a current transformer B, an isolating switch A and a maintenance grounding switch B; the isolating switch A and the maintenance grounding switch B are both arranged on the first bus two-section; a first three-phase common-box bus for connecting a first bus in another group of miniaturized double-bus double-subsection interval structure is arranged below a three-phase shell of the isolating switch A; two connecting ends of the first three-phase common-box bus are respectively connected with an overhauling grounding switch A and an isolating switch B used for being assembled with the two sets of first tee joints; a second three-phase common-box bus for connecting a first bus in another group of small double-bus double-subsection interval structures is arranged below the two sets of first tee joints;

the second bus subsection spacing assembly comprises a circuit breaker B, an isolating switch C, an isolating switch D, a maintenance grounding switch C, a maintenance grounding switch D, a current transformer C, a current transformer D, a first bus section and a second bus section;

the high-level side terminal of the circuit breaker B is sequentially connected with two sections of second bus sections;

the low-level side terminal of the circuit breaker B is sequentially connected with a current transformer D, an isolating switch D and a maintenance grounding switch D; the isolating switch D and the maintenance grounding switch D are arranged on one section of the second bus; a third three-phase common-box bus for connecting a first bus in another group of small double-bus double-subsection interval structure is arranged below a three-phase shell of the isolating switch D; the third three-phase common-box bus is connected with an isolating switch C and a maintenance grounding switch C which are used for being assembled with the two sets of second tee joints through a current transformer C; and a fourth three-phase common-box bus for connecting a first bus in another group of miniaturized double-bus double-subsection interval structure is arranged below the two sets of third tees.

Preferably, the terminals of the circuit breaker a are arranged in a U-shape.

Preferably, the circuit breakers B are arranged in a Z-shape.

Compared with the prior art, the technical scheme of the utility model has the following beneficial technical effects:

the miniaturized double-bus double-subsection spacing structure provided by the utility model can meet the requirement of mounting a combined electrical apparatus with the mounting space width not less than 535mm, and further can completely meet the requirement of the existing market for mounting 252 kilovolt combined electrical apparatuses.

Drawings

Fig. 1 is a schematic structural diagram of a conventional double-bus double-segment spacing structure.

Fig. 2 is a schematic structural diagram of the miniaturized double-bus and double-segment spacing structure according to this embodiment.

Fig. 3 is a circuit layout diagram of the miniaturized dual bus bar dual segment spacer structure according to the present embodiment.

Reference numerals: 1. a circuit breaker; 2. an isolating switch; 3. overhauling the grounding switch; 4. a circuit transformer; 101. a first bus bar; 102. a second bus bar; 11. a circuit breaker A; 12. a circuit breaker B; 21. an isolating switch A; 22. an isolating switch B; 23. an isolating switch C; 24. an isolating switch D; 31. overhauling the grounding switch A; 32. overhauling the grounding switch B; 33. overhauling the grounding switch C; 34. overhauling the grounding switch D; 41. a circuit transformer A; 42. a circuit transformer B; 43. a circuit transformer C; 44. a circuit transformer D; 1011. a first bus bar segment; 1012. a first bus bar section; 1013. a second bus bar section; 1014. a second bus bar segment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description.

As shown in fig. 1, a schematic layout structure of a conventional dual bus bar dual segment spacing structure, and according to reference numerals of an illustration portion of the drawings, a person skilled in the art can clearly know a specific implementation of the conventional dual bus bar dual segment spacing structure through fig. 1, and a description thereof is omitted.

As shown in fig. 2, the miniaturized dual-bus dual-segment spacing structure provided by the present invention includes a first bus segment spacing component and a second bus segment spacing component;

the first bus-bar section spacing assembly comprises a circuit breaker A11, a disconnecting switch A21, a disconnecting switch B22, a maintenance grounding switch A31, a maintenance grounding switch B32, a current transformer A41, a current transformer B42, a first bus-bar section 1011 and a first bus-bar section 1012;

the terminal of the circuit breaker A11 is arranged in a U shape, and the high-level side terminal of the circuit breaker A11 is sequentially connected with a current transformer A41 and a first bus bar section 1011;

the low-level side terminal of the circuit breaker A11 is sequentially connected with a current transformer B42, an isolating switch A21 and a maintenance grounding switch B32; the isolating switch A21 and the overhaul grounding switch B32 are both arranged on the first bus bar section 1012; a first three-phase common-box bus for connecting a first bus 101 in another group of miniaturized double-bus double-section spacing structure is arranged below a three-phase shell of the isolating switch A21; two connecting ends of the first three-phase common-box bus are respectively connected with a maintenance grounding switch A31 and an isolating switch B22 used for being assembled with the two sets of first tee joints; a second three-phase common-box bus for connecting the first bus 101 in the other group of the miniaturized double-bus double-subsection interval structure is arranged below the two sets of the first tee joints;

the second bus-bar section spacing assembly comprises a circuit breaker B12, a disconnecting switch C23, a disconnecting switch D24, a maintenance grounding switch C33, a maintenance grounding switch D34, a current transformer C43, a current transformer D44, a second bus-bar section 1014 and a second bus-bar section 1013;

the circuit breaker B12 is arranged in a Z shape, and the high-level side terminal of the circuit breaker B12 is connected with two second bus bar sections 1013 in sequence;

the low-level side terminal of the circuit breaker B12 is sequentially connected with a current transformer D44, a disconnecting switch D24 and a maintenance grounding switch D34; the isolating switch D24 and the maintenance grounding switch D34 are both arranged on the second bus bar section 1014; a third three-phase common-box bus for connecting the first bus 101 in the other group of the miniaturized double-bus double-section spacing structure is arranged below the three-phase shell of the isolating switch D24; the third three-phase common-box bus is connected with a disconnecting switch C23 and a maintenance grounding switch C33 which are used for being assembled with the two sets of second tee joints through a current transformer C43; and a fourth three-phase common-box bus for connecting the first bus 101 in the other group of the miniaturized double-bus double-subsection interval structure is arranged below the two sets of the third tees.

As shown in fig. 3, a schematic diagram of a miniaturized dual-bus dual-segment spacing structure is provided according to the miniaturized dual-bus dual-segment spacing structure, wherein the GSB is a circuit breaker; DS is an isolating switch; ES is a maintenance switch; CT is a current transformer; the I bus 1 section is a first bus section; the I bus 2 section is a first bus two section; the section 1 of the II bus is a section of a second bus; the second bus 2 section is a second bus two section, and a miniaturized double-bus double-subsection spacing structure provided for solving the problems existing in the background technology is conveniently and visually understood by a person skilled in the art through the provided figure 3.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the utility model and are not to be construed as limiting the utility model. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. A miniaturized double-bus double-subsection spacing structure is characterized by comprising a first bus subsection spacing component and a second bus subsection spacing component;

the first bus section spacing assembly comprises a circuit breaker A (11), an isolating switch A (21), an isolating switch B (22), a maintenance grounding switch A (31), a maintenance grounding switch B (32), a current transformer A (41), a current transformer B (42), a first bus section (1011) and a first bus section (1012);

a high-level side terminal of the circuit breaker A (11) is sequentially connected with a current transformer A (41) and a first bus section (1011);

the low-level side terminal of the breaker A (11) is sequentially connected with a current transformer B (42), an isolating switch A (21) and a maintenance grounding switch B (32); the isolating switch A (21) and the overhauling grounding switch B (32) are both arranged on the first bus bar section (1012); a first three-phase common-box bus for connecting a first bus (101) in another group of miniaturized double-bus double-subsection interval structure is arranged below a three-phase shell of the isolating switch A (21); two connecting ends of the first three-phase common-box bus are respectively connected with an overhauling grounding switch A (31) and an isolating switch B (22) used for being assembled with the two sets of first tee joints; a second three-phase common box bus used for connecting a first bus (101) in another group of small double-bus double-subsection interval structures is arranged below the two sets of first tee joints;

the second bus section spacing assembly comprises a circuit breaker B (12), a disconnecting switch C (23), a disconnecting switch D (24), a maintenance grounding switch C (33), a maintenance grounding switch D (34), a current transformer C (43), a current transformer D (44), a second bus section (1014) and a second bus section (1013);

the high-level side terminal of the breaker B (12) is sequentially connected with two second bus sections (1013);

the low-level side terminal of the breaker B (12) is sequentially connected with a current transformer D (44), a disconnecting switch D (24) and a maintenance grounding switch D (34); the isolating switch D (24) and the maintenance grounding switch D (34) are arranged on the second bus section (1014); a third three-phase common-box bus for connecting a first bus (101) in another group of miniaturized double-bus double-subsection interval structure is arranged below a three-phase shell of the isolating switch D (24); the third three-phase common-box bus is connected with a disconnecting switch C (23) and an overhauling grounding switch C (33) which are used for being assembled with the two sets of second tee joints through a current transformer C (43); and a fourth three-phase common-box bus for connecting a first bus (101) in another group of small double-bus double-subsection interval structures is arranged below the two sets of third tees.

2. A miniaturised double busbar double section spacing structure according to claim 1, characterised in that the terminals of the circuit breaker a (11) are arranged in a U-shape.

3. A miniaturised double busbar double section spacing structure according to claim 1, characterised in that the circuit breakers B (12) are arranged in a Z-shape.