CN203205717U - Compact 220kV outdoor GIS power distribution equipment - Google Patents

Abstract

The utility model discloses compact 220kV outdoor GIS power distribution equipment. Due to the limitation of the width of an outgoing line gantry of a conventional outdoor GIS, the dimension of the overall outgoing line side of a transformer substation is not reduced although the GIS is adopted. The compact 220kV outdoor GIS power distribution equipment is characterized in that the outgoing line framework comprises an upright frame body and three parallel outgoing line cross arms formed on the frame body, the outgoing line cross arms are vertical to the plane where the upright frame body is, the three outgoing line cross arms are distributed in the form of upper, middle and lower layers and are staggered, the upright frame body extends along a direction vertical to a busbar and three connecting parts connected with the middle parts of the outgoing line cross arms are formed. The compact 220kV outdoor GIS power distribution equipment reduces the lateral dimension of the outgoing line side of the outdoor GIS power distribution equipment, can obviously reduce the occupied floor area, and reduce the length of the 220kV GIS busbar.

Description

A compact 220kV outdoor GIS power distribution device

technical field

The utility model relates to the layout structure and framework of electric equipment, in particular to a compact 220 kV outdoor GIS power distribution device.

Background technique

At present, when choosing the site of the substation, basic farmland should be avoided, and mountainous, sloping or wasteland should be occupied as much as possible. When the basic farmland cannot be avoided, the technical scheme with less land occupation should be selected first when choosing the technical scheme. When there is a contradiction between economic comparison and land conservation, economic comparison should be subordinate to land conservation.

With the development of the power grid, the number of substations is increasing, and the land reserve resources are seriously insufficient. It is becoming more and more difficult to choose the land, and the cost of land acquisition and demolition of the station site is increasing. In the central area of developed cities, the cost of land acquisition is on the rise. Saving land is an urgent problem to be solved at present.

GIS equipment is a kind of intensive power equipment, which has improved the shortcomings of conventional equipment layout such as scattered large area, high failure rate, heavy installation, commissioning and equipment maintenance, and long construction period. It has the advantages of free (less) maintenance and reliable operation. The advantages of high safety can greatly save land occupation. It is in line with my country's basic national policy of saving land, and reduces expensive upfront costs such as land acquisition, demolition, and compensation.

Compared with the indoor GIS solution, the outdoor GIS generally adopts all overhead outlets. Since there are no restrictions on buildings, the flexible layout of GIS can be fully utilized, thereby saving land. The outdoor layout of conventional 220kV GIS power distribution devices is usually arranged in a line. The distance between bushings is generally 3-3.5 meters, the distance between conductors is 3.75 meters, and the distance between side conductors and the center of the door structure is 2.75 meters. The typical design recommended by the State Grid Corporation of China is 220 kV The minimum width of the portal frame of the power distribution device is 12m. Conventional outdoor GIS Due to the limitation of the width of the outlet gantry, the overall size of the outlet side of the substation has not been reduced due to the use of GIS. Therefore, it is necessary to optimize the layout of GIS equipment and arrange the outgoing lines more compactly, so as to save land to the greatest extent and improve the utilization rate of land.

Contents of the invention

The technical problem to be solved by the utility model is to overcome the above-mentioned defects in the prior art, and provide a compact 220 kV outdoor GIS power distribution device, which optimizes the layout of the outdoor GIS outgoing lines, reduces the overall lateral dimension of the outgoing line side of the substation, Compress the floor area inside the substation wall, saving the outlet corridor.

For this reason, the utility model adopts the following technical scheme: a compact 220 kV outdoor GIS power distribution device, including at least two GIS outgoing line intervals and at least one outgoing line frame, and the at least two GIS outgoing line intervals are connected by bus bars , it is characterized in that the outlet frame includes a vertical frame body and three parallel outlet cross-arms formed on the frame body, the outlet cross-arms are perpendicular to the surface where the vertical frame body is located, and the three outlet cross-arms Distributed in the upper, middle and lower layers and misplaced, the vertical frame extends in the direction perpendicular to the busbar and forms three connecting parts connected to the middle of the outgoing line cross arm;

There are three horizontally placed phase wires in each GIS outlet interval, and the three phase wires are led up by vertical casings, and then connected to one end of the upper outlet crossarm through wires.

As a further improvement and supplement to the above-mentioned technical solution, the utility model adopts the following technical measures:

The three phase lines of the GIS outgoing line interval are linear, perpendicular to the busbar, the distance between the phase lines is 0.5-0.7 meters, and the distance between adjacent bushings is 3.0-3.5 meters; the arrester located outside the phase line and the corresponding bushing (12) The spacing is 2.3-3.7 meters, and the distance between the center of the outlet frame and the innermost phase line is 2.8-3 meters to ensure the electrical safety distance requirements;

The hanging points at the ends of the three outgoing cross-arms are respectively located directly above the corresponding casings. The hanging points of the outgoing cross-arms on the lower layer are 9-9.5 meters above the ground, and the height difference between adjacent outgoing cross-arms is 5.5 -6.0 meters, to ensure a safe distance between outgoing wires.

A lightning protection line cross arm for hanging the lightning protection line is arranged directly above the outgoing line cross arm on the upper layer.

The distance between the lightning conductor cross-arm and the outlet cross-arm located on the upper layer is preferably 4-4.5m, so as to ensure that the outlet wire is within the protection range of the lightning arrester.

The utility model compresses the lateral dimension of the outgoing line side of the outdoor GIS power distribution device, the single-circuit outgoing line interval width can be reduced to 9 meters, and the double-circuit outgoing line interval width can be reduced to 18 meters, which can significantly reduce the occupied area and land acquisition cost , Reduce the length of 220kV GIS busbar and reduce the cost of GIS. Because the utility model has relatively high requirements on the outlet frame, the steel consumption of the frame is larger than that of the conventional outlet frame. However, the overall investment is far less than the layout of conventional GIS power distribution devices, especially in areas with high land acquisition costs, the advantages are more obvious.

Description of drawings

Figure 1 is a schematic diagram of the layout of an existing conventional 220 kV outdoor GIS power distribution device.

Fig. 2 is a structural schematic diagram of the utility model.

Fig. 3 is a schematic plan view of the utility model.

Fig. 4 is a structural schematic diagram of the outlet frame of the present invention.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments of the description.

The 220 kV outdoor GIS layout structure shown in Figure 2-4 is composed of four GIS outgoing line intervals 1 and two outgoing line frames. The four GIS outgoing line intervals are connected by bus 2, and each GIS outgoing line interval has Three phase wires 7, 8, 9. The outgoing line frame is composed of a vertical frame body 3 and three parallel outgoing line arms 4, 5, 6 formed on the frame body, the outgoing line cross arm is perpendicular to the surface where the vertical frame body is located, and the three outgoing line arms The cross-arms are distributed in upper, middle and lower layers and misplaced. The vertical frame extends in a direction perpendicular to the busbar and forms three connecting parts connected to the middle part of the outgoing line cross-arm. The three phase wires are led up by vertically arranged bushings, and then respectively connected to one end hanging point of the outgoing line cross arm through the wire, and the end hanging point located on the other side of the three outgoing line cross arm is passed through the wire. and vertically arranged bushings are respectively connected to three phase lines at another GIS outlet interval.

The three phase wires 7, 8, and 9 of the GIS outgoing wire interval are linear and perpendicular to the bus bar 2. The distance between the phase wires is 0.5-0.7 meters, and the distance between adjacent bushings 12 is 3.0-3.5 meters. The distance between the lightning arrester 11 located outside the phase line and the corresponding bushing 12 is 2.3-3.7 meters, and the distance between the center of the outlet frame and the innermost phase line 7 is 2.8-3 meters. The hanging points at the ends of the three outgoing cross-arms are respectively located directly above the corresponding casings. The hanging points of the outgoing cross-arm 6 on the lower floor are 9-9.5 meters above the ground, and the height difference between adjacent outgoing cross-arms The range is 5.5-6.0 meters.

A lightning conductor crossarm 10 for suspending lightning conductors is provided directly above the outlet crossarm on the upper floor, and the distance between the lightning conductor crossarm 10 and the outlet crossarm 4 on the upper floor is 4-4.5m.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the structure of the present utility model in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present utility model all fall within the protection scope of the present utility model.

Claims (4)

1. 220 kilovolts of outdoor GIS power distribution equipments of a compact, comprise at least two GIS outgoing line intervals (1) and at least one outlet structure, described at least two GIS outgoing line intervals (1) connect by bus (2), it is characterized in that, described outlet structure comprises erect-type support body (3) and three outlet cross-arms (4 parallel to each other that form at support body, 5,6), the outlet cross-arm is vertical with the face at erect-type support body place, described three outlet cross-arms (4,5,6) present, in, lower three layers distribute and dislocation, erect-type support body along with the vertical direction of bus extend and form three with the outlet cross-arm in the middle part of the connecting portions that are connected;

Each GIS outgoing line interval has three phase lines (7,8,9) that are horizontal positioned, and described three phase lines are drawn by the sleeve pipe (12) of vertical setting, is connected with an end hanging wire point of the outlet cross-arm of top respectively by wire again.

2. 220 kilovolts of outdoor GIS power distribution equipments of compact according to claim 1, it is characterized in that, three phase lines (7,8,9) of GIS outgoing line interval are linearly, perpendicular to bus (2), the phase distance between centers of tracks is 0.5-0.7 rice, and the spacing of adjacent casing (12) is 3.0-3.5 rice; The lightning arrester (11) that is positioned at the phase line outside is 2.3-3.7 rice with the spacing of corresponding sleeve pipe (12), and the center of outlet structure and the spacing that is positioned at the most inboard phase line (7) are 2.8-3 rice;

The hanging wire point of three outlet cross arm ends lay respectively at respective sleeve directly over, it is 9-9.5 rice that the hanging wire that is positioned at the outlet cross-arm (6) of lower floor is selected apart from ground level, the difference in height between the adjacent outlet cross-arm is 5.5-6.0 rice.

3. 220 kilovolts of outdoor GIS power distribution equipments of compact according to claim 1 and 2 is characterized in that, be positioned at the upper strata the outlet cross-arm directly over be provided with a lightning conducter cross-arm (10) that be used for to hang lightning conducter.

4. 220 kilovolts of outdoor GIS power distribution equipments of compact according to claim 3 is characterized in that, described lightning conducter cross-arm (10) and the distance that is positioned between the outlet cross-arm (4) on upper strata are 4-4.5m.

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