CN103354320B - A kind of 110 kilovolts of outdoor GIS double-dragonfly-typoutlet outlet wire arrangement structure - Google Patents

Abstract

The invention discloses a 110 kV GIS double-flying-fly outgoing line layout structure. Conventional outdoor GIS is limited by the width of the outlet gantry, so that the overall size of the outlet side of the substation has not been reduced due to the use of GIS equipment. The technical solution of the present invention is characterized in that the outlet frame includes a vertical steel pipe rod and six outlet cross arms formed on the steel pipe rod, all the outlet cross arms are perpendicular to the steel pipe rod, and the six outlet cross arms are in the form of The upper, middle and lower layers are distributed, and each layer is composed of two outlet cross-arms located on both sides of the steel pipe pole, and the outlet cross-arms of any layer are spatially dislocated from the same-side outlet cross-arms of the other two floors , two GIS outgoing line intervals and one outgoing line frame are used together to form upper, middle and lower three-layer double-circuit vertical overhead outgoing lines. The invention simplifies the outgoing line structure of the outdoor GIS power distribution device and compresses the transverse dimension, which can significantly reduce the occupied area and the length of the 110kV GIS busbar.

Description

A 110 kV outdoor GIS double-flying outlet layout structure

technical field

The invention relates to the arrangement structure and framework of electric equipment, in particular to a 110 kV outdoor GIS double-flying outlet arrangement structure.

Background technique

With the development of the power grid, the number of substations is increasing, the land reserve resources are seriously insufficient, and the cost of land acquisition and demolition is increasing day by day. Especially in some urban center areas, the cost of land acquisition is on the rise, and the selection of substation sites is becoming more and more difficult. Land saving in substations is an urgent problem to be solved at present.

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, debugging and equipment maintenance, and long construction period. It has the advantages of compact layout, free (less ) The advantages of high maintenance and operation reliability can greatly save land occupation, reduce expensive upfront costs such as land acquisition, demolition, compensation, etc., in line with my country's basic national policy of land conservation, and are being widely used.

There are two types of GIS equipment: indoor layout and outdoor layout. Compared with the indoor GIS scheme, the outdoor GIS generally adopts all overhead lines. Since there is no limitation of buildings, it can give full play to the characteristics of flexible GIS layout, thereby saving land. effect. However, at present, the conventional outdoor GIS generally adopts A, B, and C three-phase outlet bushings arranged in a horizontal line, and the frame adopts a herringbone gate structure lined up. The typical design recommended by the State Grid Corporation of China is a 110 kV power distribution device gate structure. The minimum width is 7-8 meters. Due to the limitation of the width of the outgoing line gantry, the overall size of the outgoing line side of the substation has not been reduced due to the use of GIS equipment.

Therefore, it is necessary to optimize the layout structure of GIS equipment outlets, reduce the width of outlet intervals, and arrange power distribution devices more compactly, so as to save land to the greatest extent and improve land utilization.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the defects of the above-mentioned prior art, and provide a 110 kV outdoor GIS double-flying outlet layout structure, which optimizes the layout of the outdoor GIS outlet intervals, reduces the lateral dimension of the overall outlet side of the substation, and compresses The area inside the substation wall saves the outlet corridor.

For this reason, the present invention adopts the following technical scheme: a 110 kV outdoor GIS double-flying fly outlet arrangement structure, including at least two GIS outlet intervals and at least one outlet frame, and the at least two GIS outlet intervals are passed through horizontally arranged The busbar connection is characterized in that the outlet frame includes a vertical steel pipe pole and six outlet cross arms formed on the steel pipe pole, all the outlet cross arms are perpendicular to the steel pipe pole, and the six outlet cross arms are on the top The first, middle and lower layers are distributed, and each layer is composed of two outlet cross arms located on both sides of the steel pipe pole, and the outlet cross arms of any layer are spatially dislocated from the same side outlet cross arms of the other second floors;

The three phase wires in each GIS outlet interval enter the seat of a vertical outlet bushing, and then are divided into three phases by three branch bushings located above the seat of the outlet bushing. The outlet cross-arm above the bushing is connected with the hanging point at the outer end, and two GIS outlet intervals and an outlet frame are used together to form the upper, middle and lower three-layer double-circuit vertical overhead outlets.

The present invention simplifies the outgoing line structure of the outdoor GIS power distribution device, and compresses the lateral size; on the premise that the horizontal distance between adjacent outgoing line wires meets the electrical safety requirements, the overall lateral size of the outgoing line side of the substation is reduced, and the area occupied by the enclosure wall of the substation is compressed area, saving the outlet corridor.

As a further improvement and supplement to the above-mentioned technical solution, the present invention takes the following technical measures:

Further, an angle of 180 degrees is formed between the two outlet cross-arms of the middle layer; the dislocation angle between the upper-layer outlet cross-arms and the outlet cross-arms on the same side of the middle layer is preferably 40-50 degrees (most preferably 42 degrees), and the upper layer An angle of 80-100 degrees is formed between the two outlet cross-arms of the lower layer; the misalignment angle between the outlet cross-arms of the lower layer and the outlet cross-arms on the same side of the middle layer is also preferably 40-50 degrees (optimally 42 degrees), and the two outlets of the lower layer An angle of 80-100 degrees is also formed between the root outlet cross-arms. By adopting the wire outlet frame arranged above, the overall structure of the wire outlet frame is compact.

Further, the lightning arrester of the GIS outgoing line interval is externally suspended on the outgoing line cross arm, the phase line in the GIS outgoing line interval is perpendicular to the busbar, the bottoms of the three branch bushings are installed on the base and distributed in a radial manner, and the three branch bushings The inner cavities of the substations communicate with the inner cavities of the base body respectively, and the three branch bushings are arranged in a vertical line, which can further reduce the overall lateral dimension of the outlet side of the substation.

Further, the distance between the tops of adjacent branch bushings is 1.2-1.8 meters, and the horizontal distance between the center of the outlet frame and the outlet bushing is 1.5-2.5 meters, ensuring the requirement of electrical safety distance.

Further, the vertical distance between the hanging points of the three outlet cross-arms on the same side is 1.8-2.0 meters, the height of the hanging points of the outlet cross-arms on the lower layer is 7-7.5 meters from the ground, and the height between the adjacent outlet cross-arms on the same side The height difference between them is 3.0-3.5 meters to ensure a safe distance between the outgoing wires.

Further, a lightning protection wire cross arm for suspending the lightning protection wire is arranged directly above the upper outlet cross arm.

Further, the height difference between the lightning conductor cross-arm and the upper outlet cross-arm is 2.5-3.0m, so as to ensure that the outlet conductors are within the protection range of the lightning arrester.

Furthermore, the two outlet crossarms in each layer of outlet crossarms are arranged symmetrically with the steel pipe rod as the axis, so that the force on both sides of the steel pipe rod is even, and the structure is more stable.

The invention compresses the lateral dimension of the outlet side of the outdoor GIS power distribution device, and the interval width of the single-circuit outlet can be reduced to 2 meters, and the interval width of the double-circuit outlet can be reduced to 7.5 meters, which can significantly reduce the occupied area and reduce the cost of land acquisition. The length of the 110kV GIS busbar is reduced, the GIS cost is reduced, the outlet structure is simple, and the amount of steel is saved, so the overall investment is far less than the conventional GIS power distribution device layout, especially in areas with high land acquisition costs, the advantages are more obvious.

Description of drawings

Fig. 1 is a schematic layout diagram of an existing conventional 110 kV outdoor GIS power distribution device.

Fig. 2 is a structural schematic diagram of the present invention.

Fig. 3 is a schematic plan view of the present invention.

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

Fig. 5 is a top view of the cross arm of the lower layer of the present invention.

Fig. 6 is a top view of the cross arm of the middle layer of the present invention.

Fig. 7 is a top view of the upper layer outlet cross arm of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 2-7, the 110 kV outdoor GIS double-flying outlet layout structure is composed of four GIS outlet intervals 1 and two outlet frames. The four GIS outlet intervals 1 pass through a horizontally arranged busbar 2 connections. The lightning arrester 10 of the GIS outgoing line interval is externally suspended on the outgoing line cross arm, and the phase line 8 in the GIS outgoing line interval is perpendicular to the bus bar 2 . The vertical outlet bushing part 7 is made up of a base 71 and three branch sleeves 72, 73, 74. The bottoms of the three branch sleeves are installed on the base and distributed radially. The inner chambers of the three branch sleeves are respectively connected to the The inner cavity of the seat body communicates, and the three branch sleeves are arranged in a vertical line (that is, the installation position of the outlet sleeve part 7 of the present invention is rotated 90 degrees compared with the conventional installation position of the outlet sleeve part, and the plane where the three branch sleeves are located is vertical on the busbar). The distance between the tops of adjacent branch bushings is 1.2-1.8 meters, and the horizontal distance between the center of the outlet frame and the outlet casing part 7 is 1.5-2.5 meters.

The three phase wires in each GIS outgoing line interval enter the seat body 71 of the vertical outgoing line bushing part 7, and then are divided into three phases by three branch bushings 72, 73, 74 located above the seat body of the outgoing line bushing part 7. , and then connected to the outer end hanging points of the outlet crossarms above the branch casing through wires, and two GIS outlet intervals and an outlet frame are used together to form upper, middle and lower three-layer double-circuit vertical overhead outlets.

The outlet frame is composed of an independent vertical steel pipe pole 3 and six outlet cross-arms formed on the steel pipe pole, all outlet cross-arms are perpendicular to the steel pipe pole, and the six outlet cross-arms are upper, middle and lower Three-layer distribution, each layer is composed of two outlet cross-arms located on both sides of the steel pipe pole and arranged symmetrically with the steel pipe pole as the axis, and the outlet cross-arm of any layer is on the same side as the other two layers in space The outgoing crossarm is misplaced. The two outlet cross-arms 5 of the middle layer form an included angle of 180 degrees; the upper-layer outlet cross-arms and the outlet cross-arms 5 on the same side of the middle layer respectively have a misalignment angle of 40-50 degrees, and the two outlet cross-arms 6 of the upper layer form an angle of 180 degrees. The included angle is 80-100 degrees; the misalignment angle between the outlet cross-arms of the lower layer and the outlet cross-arms 5 on the same side of the middle layer is also 40-50 degrees, and an 80-100-degree angle is also formed between the two outlet cross-arms 4 of the lower layer.

The vertical distance range of the three outgoing cross-arm hanging points on the same side is 1.8-2.0 meters, the hanging point of the outgoing cross-arm 4 on the lower floor is 7-7.5 meters above the ground, and the adjacent outgoing cross-arms on the same side The range of height difference between the poles is 3-3.5 meters.

A lightning conductor crossarm 9 for suspending the lightning conductor is provided directly above the outlet crossarm on the upper floor, and the height difference between the lightning conductor crossarm 9 and the outlet crossarm 6 on the upper floor is 2.5-3.0m.

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

Claims (8)

1. 110 kilovolts of outdoor GIS double-dragonfly-typoutlet outlet wire arrangement structure, comprise at least two GIS outgoing line intervals (1) and at least one outlet structure, at least two described GIS outgoing line intervals (1) are connected by the bus (2) of horizontally set, it is characterized in that, the six roots of sensation outlet cross-arm that described outlet structure comprises an erect-type steel pipe pole (3) and formed on steel pipe pole, all outlet cross-arms are all vertical with steel pipe pole, described six roots of sensation outlet cross-arm is presented, in, lower three layers of distribution, every layer lays respectively at the outlet cross-arm composition of steel pipe pole both sides by two, and the outlet cross-arm of one deck spatially all misplaces with other same side output terminal cross-arms of two layers arbitrarily,

Three phase lines in each GIS outgoing line interval enter in the pedestal of an erect-type lead collar pipe fitting (7), be divided in three couplings by three branch joints be positioned at above this lead collar pipe fitting (7) pedestal again, be connected with the outer end hanging wire point of the outlet cross-arm be positioned at above branch joint respectively by wire again, by two GIS outgoing line intervals with an outlet structure with the use of forming the vertical overhead outlet of upper, middle and lower-ranking double back.

2. 110 kilovolts of outdoor GIS double-dragonfly-typoutlet outlet wire arrangement structure according to claim 1, is characterized in that, form 180 degree of angles between two outlet cross-arms (5) in described middle level; The upper strata outlet cross-arm drift angle that misplaces with the outlet cross-arm (5) of middle level homonymy is respectively 40-50 degree, forms 80-100 degree angle between two outlet cross-arms (6) on upper strata; Lower floor's outlet cross-arm drift angle that misplaces with the outlet cross-arm (5) of middle level homonymy respectively is also 40-50 degree, also forms 80-100 degree angle between two outlet cross-arms (4) of lower floor.

3. 110 kilovolts of outdoor GIS double-dragonfly-typoutlet outlet wire arrangement structure according to claim 1 and 2, it is characterized in that, the lightning arrester of described GIS outgoing line interval is external hangs on outlet cross-arm, phase line in GIS outgoing line interval is perpendicular to bus (2), the bottom of three branch joints to be arranged on pedestal and the distribution in emitting shape, the inner chamber of three branch joints communicates with the inner chamber of pedestal respectively, and three branch joints are longitudinal word order.

4. 110 kilovolts of outdoor GIS double-dragonfly-typoutlet outlet wire arrangement structure according to claim 3, it is characterized in that, the top spacing of contiguous branch sleeve pipe is 1.2-1.8 rice, and the center of outlet structure and the level interval of lead collar pipe fitting (7) are 1.5-2.5 rice.

5. 110 kilovolts of outdoor GIS double-dragonfly-typoutlet outlet wire arrangement structure according to claim 1 and 2, it is characterized in that, the fore-and-aft distance of three outlet cross-arm hanging points of homonymy is 1.8-2.0 rice, it is 7-7.5 rice that the hanging wire being positioned at the outlet cross-arm (4) of lower floor is selected apart from ground level, and the difference in height between the adjacent outlet cross-arm of homonymy is 3.0-3.5 rice.

6. 110 kilovolts of outdoor GIS double-dragonfly-typoutlet outlet wire arrangement structure according to claim 1 and 2, is characterized in that, are positioned at directly over upper strata outlet cross-arm and are provided with one for hanging the lightning conducter cross-arm (9) of lightning conducter.

7. 110 kilovolts of outdoor GIS double-dragonfly-typoutlet outlet wire arrangement structure according to claim 6, is characterized in that, the difference in height between described lightning conducter cross-arm (9) and upper strata outlet cross-arm is 2.5-3.0m.

8. 110 kilovolts of outdoor GIS double-dragonfly-typoutlet outlet wire arrangement structure according to claim 1 and 2, is characterized in that, two outlet cross-arms in every layer of outlet cross-arm are that axle is symmetrical set with steel pipe pole.