CN217769094U

CN217769094U - Single-framework open-type power distribution device subsection interval arrangement structure

Info

Publication number: CN217769094U
Application number: CN202221082021.9U
Authority: CN
Inventors: 童亦崴; 王胜利; 张光弢; 康乐; 陈磊; 毕宇飞; 刘茜; 张芸; 潘超; 张柳; 温光辉; 宋智翔; 曹也坤; 张剑刚; 刘欢; 卜梦晨
Original assignee: Ceec Shaanxi Electric Power Design Institute
Current assignee: Ceec Shaanxi Electric Power Design Institute
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-11-08
Anticipated expiration: 2032-05-05

Abstract

The application discloses open-type distribution device segmentation interval arrangement structure of monostructure relates to power supply technical field. The bus bar comprises a first bus bar, a second bus bar, a truss and a segmented interval; the sectionalized interval comprises a first isolating switch, a current transformer, a circuit breaker and a second isolating switch; the first bus is connected with the framework, and the first isolating switch, the current transformer, the circuit breaker and the first end of the second isolating switch are sequentially connected in series through a down lead of the first bus; the second bus is connected with the framework, and the down lead of the second bus is connected with the second end of the second isolating switch. Compared with the traditional open distribution device subsection interval arrangement structure, the single-frame open distribution device subsection interval arrangement structure reduces the construction of one frame under the premise of ensuring the bus subsection requirement, effectively reduces the civil engineering quantity and the construction operation time, and also reduces the occupied area for construction.

Description

Single-framework open-type power distribution device subsection interval arrangement structure

Technical Field

The application relates to the technical field of power supply, in particular to a single-framework open-type power distribution device subsection interval arrangement structure.

Background

The main wiring mode of the transformer substation is adapted to the position and the action of the transformer substation in the system, the requirements on the reliability, the flexibility and the economy of the main wiring are determined according to the position and the action of the transformer substation in the system, and the main wiring mode of the transformer substation is finally determined according to the technical-economic comparison.

The basic wiring form in the transformer substation mainly comprises single bus wiring, single bus sectional wiring, double bus sectional wiring, one half breaker wiring and the like. In order to overcome the defects of the common single bus connection and double bus connection, improve the power supply reliability and flexibility, limit the short-circuit power of the buses and meet the requirement of the splitting operation of the system, the single bus or the double buses can be divided into a plurality of sections, and the division interval is arranged between each section of the buses.

At present, the segmented interval arrangement structure of an open power distribution device in the conventional scheme is as follows: as shown in fig. 1, two frames are provided for two-sided bus bars, each leading from a two-sided bus bar into a two-sided disconnector of a bay. Because every two sections of buses in the scheme need to build two trusses of frames, the defects of large civil engineering quantity and large occupied area exist.

SUMMERY OF THE UTILITY MODEL

The application provides a single-framework open type distribution device subsection interval arrangement structure to solve the defects that the civil engineering quantity is large and the occupied area is large in the open type distribution device subsection interval arrangement structure in the traditional scheme.

The technical scheme adopted by the application is as follows:

a single-frame open type distribution device subsection interval arrangement structure comprises a first bus, a second bus, a frame and subsection intervals; the section interval comprises a first isolating switch, a current transformer, a circuit breaker and a second isolating switch;

the first bus is connected with the framework, and the first isolating switch, the current transformer, the circuit breaker and the first end of the second isolating switch are sequentially connected in series through a down lead of the first bus; the second bus is connected with the framework, and a down lead of the second bus is connected with a second end of the second isolating switch.

Further, the first bus bar and the second bus bar are located on opposite sides of the frame, the second bus bar is located on the same side of the frame as the segment space, and a portion of the second bus bar is suspended above the segment space.

Furthermore, one end of the first bus is connected with the framework through a strain insulator string; one end of the down lead of the first bus is connected with the framework through a suspension insulator string, and the other end of the down lead of the first bus is connected with the first isolating switch.

Further, the second bus bar is connected with the framework through the strain insulator string.

Further, the first bus and the second bus are both buses with 110kV voltage class.

The technical scheme of the application has the following beneficial effects:

the single-frame open type power distribution device subsection interval arrangement structure comprises a first bus, a second bus, a frame and subsection intervals; the sectional interval comprises a first isolating switch, a current transformer, a circuit breaker and a second isolating switch; the first bus is connected with the framework, and a first isolating switch, a current transformer, a circuit breaker and a first end of a second isolating switch are sequentially connected in series through a down lead of the first bus; the second bus bar is connected with the framework, and the down lead of the second bus bar is connected with the second end of the second isolating switch. Compared with the traditional open distribution device subsection interval arrangement structure, the single-frame open distribution device subsection interval arrangement structure reduces the construction of one frame under the premise of ensuring the bus subsection requirement, effectively reduces the civil engineering quantity and the construction operation time, and also reduces the occupied area for construction.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of a segmented spaced arrangement of an open power distribution apparatus using two frames in the prior art;

FIG. 2 is a schematic cross-sectional view of a single frame open power distribution apparatus sectionalized spaced arrangement of the present application;

figure 3 is a plan view schematic of a single frame open power distribution unit sectionalized spaced arrangement of the present application.

Illustration of the drawings:

wherein, 1-a first bus; 2-a second busbar; 3-a framework; 40-subsection interval, 41-first isolating switch, 42-current transformer, 43-breaker, 44-second isolating switch; 50-strain insulator string, 51-first strain insulator string, 52-second strain insulator string; 6-hanging insulator string.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, as generally described and illustrated in the figures herein, could be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it should also be noted that, unless expressly stated or limited otherwise, the terms "disposed" and "connected" are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Furthermore, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or device that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such product or device.

Fig. 1 is a schematic cross-sectional view of a structure of an open power distribution device with two trusses at intervals in the prior art; FIG. 2 is a schematic cross-sectional view of a single frame open power distribution unit sectionalized spaced arrangement of the present application;

fig. 3 is a schematic plan view of a single frame open power distribution apparatus sectionally spaced arrangement of the present application.

Detailed description of the preferred embodiment

The single-frame arrangement structure for the open type power distribution device with the segmented intervals comprises a first bus 1, a second bus 2, a frame 3 and the segmented intervals; the block interval 40 comprises a first disconnector 41, a current transformer 42, a circuit breaker 43 and a second disconnector 44. The ground layout of the equipment in the bay 40 is the same as a conventional bay, depending on the actual layout of the substation.

In this embodiment, the first bus bar 1 is connected to the frame 3, one end of the down conductor of the first bus bar 1 is connected to the frame 3, and the other end of the down conductor of the first bus bar 1 is connected in series to the first end of the first disconnector 41, the current transformer 42, the circuit breaker 43, and the second disconnector 44 in this order. The second bus 2 is connected to the framework 3, a down lead of the second bus 2 is connected to a second end of the second isolation switch 44, specifically, the second bus 2 is connected to the framework 3, one end of the down lead of the second bus 2 is connected to the second bus 2, and the other end of the down lead of the second bus 2 is connected to the second end of the second isolation switch 44.

The first bus bar 1 and the second bus bar 2 are arranged on two opposite sides of the framework 3, the second bus bar 2 and the segment interval are positioned on the same side of the framework 3, and part of the second bus bar 2 is suspended above the segment interval. This application still includes insulator string 6 and strain insulator string 5 that dangles, and strain insulator string includes first strain insulator string 51 and second strain insulator string 52. The method comprises the following steps: the first bus 1 is connected with the framework 3 through a first strain insulator string 51; one end of a down lead of the first bus 1 is connected with the framework 3 through a suspension insulator string 6, and the other end of the down lead of the first bus 1 is sequentially connected with a first end of a first isolating switch 41, a current transformer 42, a circuit breaker 43 and a first end of a second isolating switch 44 in series; and the second bus bar 2 is connected with the framework 3 through a second strain insulator string 52, so that the two bus bars (namely the first bus bar 1 and the second bus bar 2) are separated above the sectional interval.

In this embodiment, the first bus bar 1 and the second bus bar 2 are both bus bars of 110kV voltage class.

Example two

The present application provides yet another embodiment based on the above open power distribution unit sectionally spaced single frame 3 arrangement. The transformer substation of the embodiment is a 330kV transformer substation, the 110kV electric wiring of the transformer substation adopts a double-bus single-section wiring mode, and the 110kV power distribution device of the transformer substation adopts an open SF ₆ Outdoor half-height type 'tian' shaped arrangement of porcelain column type equipment. Wherein, a sectional interval is arranged between two sections of 110kV buses. See embodiment one for a specific arrangement of segment spacings.

Compared with the traditional open distribution device subsection interval arrangement structure, the single-frame open distribution device subsection interval arrangement structure reduces the construction of one frame under the premise of ensuring the bus subsection requirement, effectively reduces the civil engineering quantity and the construction operation time, and also reduces the occupied area for construction.

The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.

Claims

1. A single-frame open type distribution device subsection interval arrangement structure is characterized by comprising a first bus, a second bus, a frame and subsection intervals; the section interval comprises a first isolating switch, a current transformer, a circuit breaker and a second isolating switch;

the first bus is connected with the framework, and the first isolating switch, the current transformer, the circuit breaker and the first end of the second isolating switch are sequentially connected in series through a down lead of the first bus; the second bus is connected with the framework, and a down lead of the second bus is connected with the second end of the second isolating switch.

2. The single frame open electrical distribution apparatus sectionalizing arrangement of claim 1, wherein the first bus bar and the second bus bar are located on opposite sides of the frame, the second bus bar is located on a same side of the frame as the sectionalizing interval, and a portion of the second bus bar is suspended above the sectionalizing interval.

3. The open electrical distribution device sectionally spaced arrangement of single framework of claim 1, wherein one end of the first busbar is connected with the framework by a strain insulator string; one end of a down lead of the first bus is connected with the framework through a suspension insulator string, and the other end of the down lead of the first bus is connected with the first isolating switch.

4. The open electrical distribution device sectionalized spacing arrangement of single framework of claim 3, wherein said second busbar is connected with said framework by said strain insulator string.

5. The single-frame open distribution apparatus sectionalized spacing arrangement of claim 1, wherein the first busbar and the second busbar are both busbars of a 110kV voltage class.