CN202340066U

CN202340066U - Double-bus single-section GIS (gas insulated switchgear) distribution device circuit layout structure

Info

Publication number: CN202340066U
Application number: CN2011204923563U
Authority: CN
Inventors: 吴家林; 石燕; 李晔
Original assignee: Sichuan Electric Power Design and Consulting Co Ltd
Current assignee: Sichuan Electric Power Design and Consulting Co Ltd
Priority date: 2011-12-01
Filing date: 2011-12-01
Publication date: 2012-07-18
Anticipated expiration: 2021-12-01

Abstract

The utility model discloses a double-bus single-section GIS (gas insulated switchgear) distribution device circuit layout structure which is especially suitable for the condition with multiple homonymous overhead outlet circuits in the double-bus single-section GIS high-voltage distribution device. The double-bus single-section GIS distribution device three-row bus arrangement structure capable of reasonably distributing homonymous overhead circuits into different sections without circuit intercrossing comprises homonymous circuits provided with at least two GIS distribution devices, and a three-row bus arrangement structure, wherein the front bus and the back bus are connected through a sectioning device; the front outlet circuit of each homonymous circuit is installed on the front bus and a middle bus, and the back outlet circuit is installed on the back bus and the middle bus; and the front outlet circuit and the back outlet circuit are on the same cross section. The GIS distribution device circuit layout structure has the advantages of higher power supply safety and reliability, land saving and lower investment cost, and is convenient for maintenance and construction of expansion projects.

Description

The single segmentation GIS of double-bus power distribution equipment circuit arrangement

Technical field

The utility model relates to the single segmentation GIS of a kind of double-bus power distribution equipment circuit arrangement, especially is suitable for the more situation in overhead outlet of the same name loop in the single segmentation GIS of the double-bus high voltage distribution installation

Background technology

In high voltage distribution installation; Sulfur hexafluoride gas-insulating and fully-enclosed power distribution equipment (being called for short GIS) is compared with air-insulated conventional power distribution equipment commonly used (being called for short AIS), and it is little to have floor space, and the fail safe reliability is high; Advantages such as maintenance workload is little are widely used gradually.

GIS high voltage distribution installation for the single-row layout of the single segmentation of double-bus; Intersect for fear of overhead transmission line; Need the loop of the same name of power supply and load is arranged on the same section bus, therefore loop of the same name must have a power failure simultaneously when enlarging at interval, bus maintenance and busbar fault, has reduced power supply reliability.

As shown in Figure 1 is existing GIS power distribution equipment wiring schematic diagram; What adopt is the single disjunction connection type of double-bus; Its GIS bus is that biserial is arranged; Comprise upper bus 1M, bottom left side section bus 2M and lower right section bus 3M, adopt sectioning 6 to connect between a left side, bottom section bus 2M and the lower right section bus 3M, all adopt bus bar connector to be connected between upper bus 1M and a left side, bottom section bus 2M and the lower right section bus 3M.Between upper bus 1M and a left side, bottom section bus 2M and lower right section bus 3M, be connected with main transformer jockey 7, bus equipment 8, bus bar connector 16 respectively; Article two, loop of the same name; On bus 1M and a left side, bottom section bus 2M, be loop 1,2 of the same name wherein, loop 1 of the same name comprises that two go out

line loop

1A, 1B, and loop 2 of the same name comprises that also two go out

line loop

2A, 2B; On bus 1M and lower right section bus 3M, with bus 1M and down the set-up mode of step left side section bus 2M is identical, do not giving unnecessary details.

The circuit layout that is connected on the section bus 2M of a bus 1M and bottom left side is elaborated, two of loop 1 of the same name go out

line loop

1A, 1B arranged adjacent at present, and two of loop 2 of the same name go out also arranged adjacent of line loop 2A, 2B.Though this arrangement form can satisfy general power supply reliability requirement; But still have the shortcoming that reduces power supply reliability under special circumstances: (1) is when high voltage distribution installation outlet power supply, when Load distribution is uneven; Connecting like

bus

1M, 2M is load entirely; It is power supply entirely that

bus

1M, 3M connect, and then its bus running manner is extremely dumb; (2) when with busbar fault or the maintenance of section or when extending new loop at interval, loop of the same name must have a power failure simultaneously, has reduced power supply reliability.Cause the reason of the problems referred to above to be: loop of the same name is mounted on the identical double-bus; Go out like loop of the same name that

line loop

1A, 1B all are connected on

bus

1M, 2M is last; And will loop of the same name be installed on two sections different buses; As go out line loop 1A and be connected on

bus

1M, 2M is last, goes out that line loop 1B is connected on

bus

1M, 3M is last, just must cause the overhead transmission line scissors crossing.

The utility model content

The utility model technical problem to be solved provide a kind of can be in different sections with overhead transmission line of the same name, power supply and load loop reasonable distribution, circuit is the single segmentation GIS of the double-bus power distribution equipment circuit arrangement of not scissors crossing again.

The single segmentation GIS of the double-bus that the utility model technical problem to be solved is adopted power distribution equipment circuit arrangement; Comprise at least two loops of the same name that are provided with the GIS power distribution equipment; Double-bus is made up of three row buses of parallel arranged; Comprise preceding bus, median generatrix, back bus, adopt sectioning to connect between wherein preceding bus and the back bus; Preceding bus all adopts bus bar connector to be connected with median generatrix, back bus with median generatrix; Go out before each loop of the same name comprises line loop with after go out line loop, preceding go out line loop and be installed in before on bus and the median generatrix, after go out line loop and install afterwards on the bus and median generatrix; Go out before the above-mentioned same loop of the same name line loop with after go out line loop on same section.

Before corresponding each loop of the same name, the preceding bus outside, go out line loop and be provided with preceding outlet structure, go out line loop before described to be connected with the preceding outlet of said preceding outlet structure; Behind corresponding each loop of the same name, the bus outside, back, go out line loop and be provided with the back outlet structure; Go out after described that lead is connected between the frame between line loop and back outlet structure and the preceding outlet structure, between frame lead again with preceding outlet structure on back outlet be connected.

Preceding outlet before described on the outlet structure is lower than the back outlet.

Preceding bus is arranged in the median generatrix both sides with the back bus.

Before go out line loop, after go out line loop and be connected with lightning arrester respectively.

Adopt fail safe and the reliability of GIS power distribution equipment bus three its power supplies of row arrangement of the utility model greatly to improve, practice thrift the place, the minimizing cost of investment, and be convenient to keep in repair the construction with extension project.

Description of drawings

Fig. 1 is the single segmentation GIS of an existing double-bus power distribution equipment wiring schematic diagram;

Fig. 2 is the single segmentation GIS of the double-bus power distribution equipment wiring schematic diagram of the utility model;

Fig. 3 is that the section among Fig. 2 is arranged sketch map.

Mark among the figure: 1,2-loop of the same name goes out line loop, 1M, 2M, 3M-bus, 6-sectioning after going out line loop, 2A, 2B-before 1A, the 1B-; 7-main transformer jockey, the 8-bus equipment, 9-hangs down the frame outlet; The overhead outlet of 10-, outlet structure behind outlet structure, the 13-before the 11-lightning arrester, 12-; Lead between the 14-frame, 15-ground wire, 16-bus bar connector.

Embodiment

The single segmentation GIS of the double-bus of the utility model power distribution equipment circuit arrangement is as shown in Figure 2; Comprise at least two loops of the same name that are provided with the GIS power distribution equipment; Double-bus is made up of three row buses of parallel arranged; Comprise the median generatrix 1M in the middle of being arranged in, be arranged in the preceding bus 2M and back bus 3M of median generatrix 1M both sides, adopt sectioning 6 to connect between wherein preceding bus 2M and the back bus 3M; Adopt bus bar connector 16 to be connected between median generatrix 1M and the preceding bus 2M, median generatrix 1M with afterwards also adopt another bus bar connector 16 to be connected between the bus 3M.Go out before each loop of the same name comprises line loop with after go out line loop, as loop 1 of the same name comprise be installed in before on bus 2M and the median generatrix 1M before go out line loop 1A, be installed on afterwards the bus 3M and median generatrix 1M after go out line loop 1B; Loop 2 of the same name equally also comprise be installed in before on bus 2M and the median generatrix 1M before go out line loop 2A, be installed on afterwards the bus 3M and median generatrix 1M after go out line loop 2B.And go out before the above-mentioned same loop of the same name line loop with after go out line loop on same section.Wherein said forward and backward be to define according to the outlet direction that goes out line loop in the accompanying drawing.

Before corresponding each loop of the same name, the preceding bus 2M outside, go out

line loop

1A, 1B branch is provided with preceding outlet structure 12, outlet structure 13 after going out

line loop

2A, 2B behind corresponding each loop of the same name, the bus 3M outside, back and being respectively arranged with.As shown in Figure 3, preceding outlet structure 12 highly is higher than back outlet structure 13, and preceding outlet structure 12 is divided into three layers, is followed successively by the safe distance requirement that distance between 9, three layers of the ground wires 15, back outlet 10, preceding outlet satisfies transmission line from top to bottom.The preceding outlet 9 that goes out before each on line loop 1A, the 1B preceding outlet structure 12 corresponding with it connects.Go out between corresponding with it respectively back outlet structure 13 of

line loop

2A, 2B and the frame between the preceding outlet structure 12 lead 14 after each and connect, between frame lead 14 again with preceding outlet structure 12 on back outlet 10 be connected.Preceding outlet 9 and back outlet 10 connecting systems.

Since each loop of the same name before go out line loop with after go out line loop on same section; And the preceding outlet 9 on the preceding outlet structure 12 is set to be lower than back outlet 10, and outlet structure 13 connects that lead 14 can not take place intersect and interfere with preceding outlet 9 between the frame of coming from the back.Though so just realized loop of the same name before go out line loop with after go out line loop and be installed on the different buses, the line loop that goes out in different loops of the same name can not intersect and cross over each other yet.

Installing for 13 times with the back outlet structure at preceding outlet structure 12 simultaneously has lightning arrester 11 respectively, lightning arrester 11 respectively with preceding go out

line loop

1A, 1B, after go out

line loop

2A, 2B is connected.

Adopt this mode to have the following advantages: included two in (1) loop of the same name 1 go out

line loop

1A, 1B and have been connected on respectively on three

sections bus

1M, 2M and 3M; All be connected on the same section bus with respect to loop of the same name in the existing power distribution equipment, its reliability greatly improves.(2) avoided in existing GIS power distribution equipment loop of the same name is arranged in the shortcoming of the outlet line scissors crossing that causes on the different section buses.(3) one section bus such as 2M break down or when overhauling therein, and another section bus 3M can also guarantee that another goes out line loop in the loop of the same name and normally move.(4) along with the development of system, when the new loop of needs enlarging, also can be only to wherein one

section bus

2M or 3M power cut construction, and can not cause whole power failure the in loop of the same name not impact to system.

Claims

1. the single segmentation GIS of double-bus power distribution equipment circuit arrangement comprises at least two loops of the same name that are provided with the GIS power distribution equipment, it is characterized in that,

Double-bus is made up of three row buses of parallel arranged, comprises preceding bus (2M), median generatrix (1M), back bus (3M), adopts sectioning (6) to connect between wherein preceding bus (2M) and the back bus (3M); Preceding bus (2M) all adopts bus bar connector (16) to be connected with median generatrix (1M), back bus (3M) with median generatrix (1M);

Go out before each loop of the same name comprises line loop with after go out line loop, precedingly go out line loop and be installed on preceding bus (2M) and the median generatrix (1M), after go out line loop and install on back bus (3M) and the median generatrix (1M);

Go out before the same loop of the same name line loop with after go out line loop on same section.

2. the single segmentation GIS of double-bus as claimed in claim 1 power distribution equipment circuit arrangement; It is characterized in that; Before corresponding each loop of the same name, the preceding bus outside, go out line loop (1A, 1B) and be provided with preceding outlet structure (12), go out line loop (1A, 1B) before described to be connected with the preceding outlet (9) of said preceding outlet structure (12);

Behind corresponding each loop of the same name, the bus outside, back, go out line loop (2A, 2B) and be provided with back outlet structure (13);

Go out after described that lead (14) is connected between the frame between line loop (2A, 2B) and back outlet structure (13) and the preceding outlet structure (12), lead between frame (14) again with preceding outlet structure (12) on back outlet (10) be connected.

3. the single segmentation GIS of double-bus as claimed in claim 2 power distribution equipment circuit arrangement is characterized in that the preceding outlet (9) on the outlet structure before described (12) is lower than back outlet (10).

4. the single segmentation GIS of double-bus as claimed in claim 1 power distribution equipment circuit arrangement is characterized in that preceding bus (2M) and back bus (3M) are arranged in median generatrix (1M) both sides.

5. the single segmentation GIS of double-bus as claimed in claim 1 power distribution equipment circuit arrangement is characterized in that, preceding go out line loop (1A, 1B), after go out line loop (2A, 2B) and be connected with lightning arrester (11) respectively.