CN205452937U - 330kVGIS distribution device based on four angle scheme - Google Patents

Abstract

The utility model discloses a 330kV GIS power distribution device based on quadrangular wiring, which includes four circuit breakers and four circuit outlets, the four circuit breakers are arranged in the shape of a "field", and the four circuit breakers are connected end to end, and the four circuit outlets are respectively arranged On the outside of the four circuit breakers, and lead out from the connection line of every two circuit breakers, there is no extra space between the circuit breakers, and the four circuit outlets are respectively arranged on the outside of the four circuit breakers, compared with the existing layout scheme , The space between circuit breakers and outlets is not wasted, saving floor space.

Description

A 330kV GIS power distribution device based on square connection

【Technical field】

The utility model belongs to the electrical field and relates to a 330kV GIS power distribution device based on quadrangular wiring.

【Background technique】

GIS (gas-insulated metal-enclosed switchgear) mainly includes circuit breakers, disconnectors, grounding switches, voltage transformers, current transformers, lightning arresters, busbars, cable terminals, inlet and outlet bushings, etc., which are organically combined into a whole through optimized design . The advantages of GIS are small footprint, high reliability, strong security, and small maintenance workload.

The basic link of electrical main wiring is power supply (generator and transformer) and line, how to connect them is the main body of electrical main wiring. When the number of incoming and outgoing lines in the power distribution device of the same voltage level is large (generally more than 4), it is necessary to set up a busbar as an intermediate link. For the main wiring with a small number and no further development and expansion, a simplified intermediate link is adopted instead of a busbar. The classification of main wiring can be divided into two categories: busbar wiring and non-busbar wiring according to whether busbars are set.

The quadrangular wiring is one of the electrical main wirings without bus bars. The quadrangular wiring is the electrical main wiring that connects four circuit breakers in a ring and leads out the circuit from every two circuit breaker connections. See Figure 1 for details.

The main features of the quadrilateral connection are as follows:

(1) Less equipment and less investment.

The number of circuit breakers = the number of circuits. Except for the bridge connection, compared with the common main connection, the equipment used in the angle connection is the least.

(2) The reliability and flexibility of operation are better.

Each circuit is powered by two circuit breakers. When any circuit breaker is overhauled, all circuits will not interrupt the power supply.

(3) Easy and safe to operate.

The isolating switch does not operate electrical appliances.

(4) Small footprint.

Square wiring has the reliability of double busbar with bypass, but it saves the busbar and bypass facilities and many isolating switches, and the floor area is only 40% of that of ordinary medium-sized double busbar with bypass wiring. Or the layout in the hole is more appropriate.

Scope of application: 110kV and above power distribution devices with fewer circuits and whose development has been finalized.

4. Describe in detail the technical solution closest to the utility model in the prior art (referred to as the closest prior art on the patent)

The existing 330kVGIS power distribution device based on quadrangular wiring is shown in Figure 2 for details. The four circuit breakers are arranged horizontally in a "one" shape, and the four circuit breakers are arranged in the middle of each two circuit breakers and arranged on the outside.

The current existing 330kVGIS power distribution device based on quadrangular wiring occupies the following areas: in the length direction, circuit breaker 1S1+outlet 1OUT1(outlet 3OUT3)+circuit breaker 2S2+circuit breaker 3S3+outlet 2OUT2(outlet 4OUT4)+circuit breaker 4S4= The length of four circuit breakers + the length of two outgoing lines is about 20460mm; in the width direction, it needs to occupy the outgoing line 1OUT1 (outlet 2OUT2) + circuit breaker 1S1 (circuit breaker 2S2/circuit breaker 3S3/circuit breaker 4S4) + outgoing line 3OUT3 (outlet 4OUT4) ) = Width of a circuit breaker + Width of two outlets, about 14205mm.

There is extra space between circuit breaker 1S1 and circuit breaker 2S2, and between circuit breaker 3S3 and circuit breaker 4S4S4, which is not enough to arrange outgoing equipment. There is extra space between outgoing line 1OUT1 and outgoing line 2OUT2, and between outgoing line 3OUT3 and outgoing line 4OUT4. The four circuit breakers need to be connected end-to-end while ensuring that the GIS pipes do not cross. The extra space between outgoing lines is not enough to arrange circuit breakers. Therefore, the existing layout schemes all have redundant space in the length direction and the width direction, which is wasted to some extent.

【Content of utility model】

The purpose of the utility model is to overcome the defects of the prior art, and provide a 330kV GIS power distribution device based on a square connection, which has the advantage of saving floor space.

In order to achieve the above object, the technical scheme of the utility model is as follows:

A 330kV GIS power distribution device based on quadrangular wiring, including four circuit breakers and four circuit outlets, the four circuit breakers are arranged in the shape of a "field", and the four circuit breakers are connected end to end, and the four circuit outlets are respectively arranged on the four circuit breakers outside, and are respectively drawn from the connecting line of every two circuit breakers.

Further, the sum of the widths of the two outgoing lines arranged on one side of the four circuit breakers is smaller than the sum of the widths of the two circuit breakers.

Further, four circuit breakers are arranged vertically.

Advantage of the utility model:

The utility model is based on a 330kV GIS power distribution device with quadrangular wiring. The four circuit breakers are respectively arranged in a "Tian"-shaped grid and connected end to end. There is no extra space between the circuit breakers, and the four circuit breakers are respectively arranged in four circuit breakers. Compared with the existing layout scheme, the space between the circuit breakers and the outgoing lines is not wasted, which saves the occupied area.

Furthermore, the sum of the widths of the two outgoing lines is smaller than the sum of the widths of the two circuit breakers, and there is no extra space between the outgoing lines, which greatly saves space and land occupation.

Furthermore, the 330kVGIS circuit breaker adopts a vertical arrangement, and the inspection and maintenance of the circuit breaker can be realized by a crane, and the inspection of the operating personnel can be realized through the space below the circuit breaker, which is convenient for operation and maintenance.

【Description of drawings】

Figure 1 is the electrical schematic diagram of GIS quadrangular wiring;

Figure 2 is a schematic diagram of the existing 330kVGIS power distribution device based on quadrangular wiring;

Fig. 3 is the schematic diagram of the utility model;

【detailed description】

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:

The utility model designs a new 330kVGIS power distribution device based on quadrangular wiring, see Figure 3 for details. Arrange circuit breaker 1S1 and circuit breaker 2S2 horizontally in a "one" shape, circuit breaker 3S3 and circuit breaker 4S4 horizontally in a "one" shape, and arrange every two circuit breakers up and down, and four circuit breakers are respectively arranged in In the "Tian"-shaped square, the four circuit breakers are connected end to end near each other to realize quadrangular wiring, and the four outlets are respectively arranged on the outside of the circuit breaker.

The area occupied by the new 330kV GIS layout based on quadrangular wiring is mainly: in the length direction, it needs to occupy the outlet 1OUT1 (outlet 3OUT3) + circuit breaker 1S1 (circuit breaker 3S3) + circuit breaker 2S2 (circuit breaker 4S4) + outlet 2OUT2 (outlet 4OUT4) ) = length of two circuit breakers + length of two outgoing lines, about 10430mm; in the width direction, the width of outgoing line 1OUT1 + outgoing line 3OUT3 is smaller than the width of circuit breaker 1S1 + circuit breaker 3S3, so the width needs to occupy the width of two circuit breakers, About 11408mm.

In the new layout plan, the four circuit breakers are arranged in the "Tian"-shaped squares, and the four circuit breakers are connected end-to-end at the nearest point to realize the quadrangular wiring, and the four circuit breakers are respectively arranged on the outside of the circuit breaker. Minimize the waste of space.

The above are only preferred embodiments of the present utility model, and do not limit the utility model in any form. Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any Those skilled in the art, without departing from the scope of the technical solutions of the present utility model, can use the method and technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but all without departing from the scope of the present utility model For the content of the new technical solution, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present utility model still belong to the scope of the technical solution of the utility model.

Claims (3)

1. a 330kVGIS power distribution equipment based on quadrangle wiring, it is characterized in that: include that four choppers and four return back out line, four choppers are that sphere of movements for the elephants shape is arranged, and four choppers join end to end, four return back out line is respectively arranged in the outside of four choppers, and draws from the line of every two choppers respectively.

330kVGIS power distribution equipment based on quadrangle wiring the most according to claim 1, it is characterised in that: it is arranged in the two of four chopper sides and returns back out the width sum width sum less than two choppers of line.

330kVGIS power distribution equipment based on quadrangle wiring the most according to claim 1, it is characterised in that: four choppers use vertical.