CN102377111A

CN102377111A - Duplicate-busbar arrangement structure with single busbar subsection GIS (Geographic Information System) power distribution units

Info

Publication number: CN102377111A
Application number: CN2011103932019A
Authority: CN
Inventors: 李晔; 石燕; 吴家林
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: 2012-03-14

Abstract

The invention discloses a duplicate-busbar arrangement structure with single busbar subsection GIS (Geographic Information System) power distribution units, which is particularly suitable for the condition that the single busbar subsection GIS (Geographic Information System) power distribution unit is internally provided with more overhead outgoing line loops of the sample name. The duplicate-busbar arrangement structure with the single busbar subsection GIS (Geographic Information System) power distribution units, which is provided by the invention and can be used for reasonably distributing overhead lines of the same name in different sections in an uncrossed spanning manner, comprises at least two loops of the same name with GIS (Geographic Information System) power distribution units; a duplicate-busbar is composed by a front busbar and a back busbar; the front busbar and the back busbar are connected by a stepwise device; and each loop of the same name comprises a front line outgoing loop and a back line outgoing line loop, wherein the front line outgoing loop is arranged on the front busbar, the back line outgoing line loop is arranged on the back busbar, and the front outgoing line loop and the back outgoing line loop of the loop of the same name are arranged on the same cross section. The duplicate-busbar arrangement structure with the single busbar subsection GIS (Geographic Information System) power distribution units has the advantage of greatly increasing the safety and the reliability of power supply, saving areas, reducing investment cost, being convenient for maintenance and the construction of extension programs.

Description

Sectionalized single busbar connection GIS power distribution equipment bus biserial arrangement

Technical field

The present invention relates to sectionalized single busbar connection GIS power distribution equipment busbar arrangement structure, be particularly suitable for the more situation in overhead outlet of the same name loop in the sectionalized single busbar connection GIS 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 single busbar connection list sectionalized 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 sectionalized single busbar connection GIS power distribution equipment wiring schematic diagram, and its GIS bus comprises left side section bus 1M and right section bus 2M for press the single-row layout of axis direction word order of bus, about adopt sectioning 6 connections between two sections buses.About be connected with main transformer jockey 7 and bus equipment 8 respectively on two sections buses,

About two sections buses on also be connected with two loops of the same name respectively; On the section bus 1M of a left side, be loop 1,2 of the same name wherein; Loop 1 of the same name comprises two loops that go out

line loop

1A, 1B that are provided with the GIS power distribution equipment; Loop 2 of the same name also comprises two loops that go out

line loop

2A, 2B that are provided with the GIS power distribution equipment, and the set-up mode with left side section bus 1M on right section bus 2M is identical, is not giving unnecessary details.

Existing circuit on the section bus 1M of a left side is arranged is elaborated, two loop arranged adjacent that go out

line loop

1A, 1B in loop 1 of the same name, and two loops that go out

line loop

2A, 2B in loop 2 of the same name are arranged adjacent also.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; Like the 1M bus is load entirely; The 2M bus is power supply entirely, 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 in on the section bus, and will loop of the same name be installed on two sections different buses, just must cause the overhead transmission line scissors crossing.

Summary of the invention

Technical problem to be solved by this invention 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 sectionalized single busbar connection GIS power distribution equipment bus biserial arrangement of not scissors crossing again.

Sectionalized single busbar connection GIS power distribution equipment bus biserial arrangement of the present invention; Comprise at least two loops of the same name that are provided with the GIS power distribution equipment; Double-bus is made up of the biserial bus, comprises preceding bus, back bus, and adopts sectioning to connect between preceding bus and the back bus; 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 the bus, after go out line loop and install on the bus of back; Go out before the 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.

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

Adopt the fail safe and the reliability of its power supply of GIS power distribution equipment circuit arrangement of the present invention greatly to improve, practice thrift the place, reduce cost of investment, and be convenient to keep in repair the construction with extension project.

Description of drawings

Fig. 1 is existing sectionalized single busbar connection GIS power distribution equipment wiring schematic diagram;

Fig. 2 is a sectionalized single busbar connection GIS power distribution equipment wiring schematic diagram of the present invention;

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

Mark among the figure: 1,2-loop of the same name, 1A, 1B, 2A, 2B-go out line loop, 1M, 2M-bus, 6-sectioning; 7-main transformer jockey, outlet before the 8-bus equipment, 9-, outlet behind the 10-; Outlet structure behind outlet structure, the 13-before the 11-lightning arrester, 12-, lead between the 14-frame, 15-ground wire.

Embodiment

As shown in Figure 2 is sectionalized single busbar connection GIS power distribution equipment wiring schematic diagram of the present invention, and the GIS power distribution equipment bus shown in the figure adopts parallel biserial to arrange, promptly preceding bus 1M and back bus 2M are arranged in parallel.Adopt sectioning 6 to connect between preceding bus 1M and the back bus 2M.On preceding bus 1M and back bus 2M, at least two loops of the same name are installed as required, 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 the bus 1M before go out line loop 1A, be installed on the bus 2M of back after go out line loop 1B; Loop 2 of the same name equally also comprise be installed in before on the bus 1M before go out line loop 2A, be installed on the bus of back after go out line loop 2B.And go out before above-mentioned each loop of the same name line loop with after go out line loop on same section; Identical set-up mode is adopted in other loops of the same name.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 1M outside, go out

line loop

1A, 2A branch is provided with preceding outlet structure 12, outlet structure 13 after going out

line loop

1B, 2B behind corresponding each loop of the same name, the bus 2M 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 2A preceding outlet structure 12 corresponding with it connects.Go out between corresponding with it respectively back outlet structure 13 of

line loop

1B, 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; Lead 14 just can not take place to intersect and interfere with preceding outlet 9 between frame like this; Though thereby realized loop of the same name before go out line loop with after go out line loop and be installed on the different buses, two of loop of the same name go out line loop and also can not intersect each other and cross over.

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: (1) loop of the same name 1 included before go out line loop with after go out that line loop has been connected on two sections bus 1M respectively, 2M is last, all be connected on one section bus with respect to loop of the same name in the existing power distribution equipment, its reliability greatly improves.(2) avoided in the GIS high voltage distribution installation of the existing single-row layout of bus section loop of the same name is arranged in the shortcoming that causes the circuit scissors crossing on the different section buses.(3) one section bus such as 1M break down or when overhauling therein, and bus 2M can also guarantee that in the loop of the same name another goes out line loop and normally move.(4) along with the development of system, when the new loop of needs enlarging, also can be only to wherein

bus

1M or 2M power cut construction, and can not cause whole power failure the in loop of the same name not impact to system.

Claims

1. sectionalized single busbar connection GIS power distribution equipment bus biserial arrangement; Comprise 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 the biserial bus, comprises preceding bus (1M), back bus (2M), and adopts sectioning (6) to connect between preceding bus (1M) and the back bus (2M);

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 the preceding bus (1M), after go out line loop and install on the back bus (2M);

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

2. sectionalized single busbar connection GIS power distribution equipment bus biserial arrangement as claimed in claim 1 is characterized in that,

Before corresponding each loop of the same name, preceding bus (1M) outside, go out line loop (1A, 2A) and be provided with preceding outlet structure (12), go out line loop (1A, 2A) before described to be connected with the preceding outlet (9) of said preceding outlet structure (12);

Behind corresponding each loop of the same name, back bus (2M) outside, go out line loop (1B, 2B) and be provided with back outlet structure (13); Go out after described that lead (14) is connected between the frame between line loop (1B, 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. sectionalized single busbar connection GIS power distribution equipment bus biserial arrangement as claimed in claim 2 is characterized in that, the preceding outlet (9) on the outlet structure before described (12) is lower than back outlet (10).

4. sectionalized single busbar connection GIS power distribution equipment bus biserial arrangement as claimed in claim 1 is characterized in that, preceding go out line loop (1A, 2A), after go out line loop (1B, 2B) and be connected with lightning arrester (11) respectively.