Dual-circuit outgoing line structure of outgoing line architecture and GIS device

Abstract

The application relates to the technical field of transformer substation outgoing lines, and discloses a double-circuit outgoing line structure of an outgoing line framework and GIS equipment, wherein the outgoing line framework comprises a first concrete foundation, a cross arm, two columns and two groups of suspension assemblies; the two columns are arranged at intervals along a first direction; the first concrete foundation is in one-to-one correspondence with the columns and is arranged at the bottom end of the columns; the cross arm is connected to the top end of the two columns respectively, and the two ends of the cross arm protrude from one column and are arranged in a cantilevered manner; the two groups of suspension assemblies are sequentially arranged along the cross arm, and each suspension assembly comprises three groups of insulators arranged at intervals; in one group of the suspension assemblies, two insulators are located between the two columns, and the other insulator is located at the position where the cross arm is arranged in a cantilevered manner. The double-circuit outgoing line structure of the GIS equipment comprises the above-mentioned outgoing line framework and two GIS busbars; each GIS busbar corresponds to each suspension assembly; each GIS busbar comprises three outgoing conductors; and each conductor is connected to the bottom end of each insulator in a one-to-one manner. The application saves the land occupation of the outgoing line structure of the GIS equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of substation outgoing line, in particular to an outgoing line architecture and a double-circuit outgoing line structure of GIS equipment. BACKGROUND

[0002] With the rapid development of economy, society and cities in China, the increasing demand for energy, the main equipment and plant of various power projects correspondingly increase, and the supporting auxiliary systems also correspondingly increase. However, due to the limitation of precious land resources in China, the land area and land conditions of new projects are relatively smaller and more stringent than before, so some original outgoing line structures are no longer the optimal choice.

[0003] For example, Figure 1 As shown in Figure 2 Taking the existing typical 220kV double-circuit door-type outgoing line architecture as an example, it is divided into two spans according to the outgoing line, and three herringbone columns 101 are needed in total, one 220kV overhead conductor is arranged in each span, and the distance between the A, B and C three-phase conductors in each span is 4 meters. Considering the safety distance of the conductor from the herringbone column 101, the distance between the edges of the A, B and C three-phase conductors and the herringbone column 101 is also 3 meters, so the total width of the upper structure of the door-type architecture needs to be 28 meters. In order to maintain the stability of the overall architecture, a diagonal support leg 102 needs to be arranged beside any side column in the width direction, and the distance between the bottom end of the diagonal support leg 102 and the bottom end of the herringbone column 101 is 3.8 meters, so the total width of the lower foundation needs to be 31.8 meters, which occupies a large area. In addition, when using the door-type architecture, the bus support 105 of the GIS bus 104 and some related equipment foundations 103 often need to be arranged below or near the door-type architecture (as shown in Figure 3 The arrangement of the GIS bus), due to the dense arrangement of the equipment foundations 103 directly below the architecture, it is very difficult to arrange other facilities (such as cable trenches) at this place, which limits the planning of the GIS power distribution device of the power plant or the cable channel of the substation, and the problem of waste of land resources is more prominent. SUMMARY

[0004] The main purpose of the present application is to save the land occupation of the GIS equipment outgoing line structure. Another purpose of the present application is to reduce the number of foundations below the GIS equipment outgoing line structure, and facilitate the planning of the GIS power distribution device of the power plant or the cable channel of the substation.

[0005] In order to achieve the above purpose, the present application provides an outgoing line architecture, comprising:

[0006] Two columns, the two columns are arranged in a spaced manner along a first direction;

[0007] A first concrete foundation corresponding to each of the columns, the first concrete foundation being arranged at the bottom end of the column and being arranged to be embedded in the ground;

[0008] A cross arm connected to the top end of each of the two columns, the two ends of the cross arm being respectively protruded from one of the columns to form a cantilevered arrangement; and two groups of suspension assemblies arranged along the cross arm, each of the suspension assemblies comprising three strings of insulators arranged in sequence, in one of the groups of suspension assemblies, two strings of the insulators are arranged between the two columns, and one string of the insulators is arranged at the position where the cross arm is cantilevered.

[0009] In some embodiments, the wire outlet structure further comprises a cross beam, two ends of the cross beam are respectively connected to the middle part of each of the columns.

[0010] In some embodiments, the wire outlet structure further comprises three support beams, the three support beams are respectively connected to the cross beam perpendicularly, two of the support beams are respectively connected to the two ends of the cross beam, and one end of each of the two support beams is protruded from the front side of the cross beam, the other support beam is connected to the middle part of the cross beam, and one end of the other support beam is protruded from the rear side of the cross beam.

[0011] In some embodiments, the wire outlet structure further comprises a plurality of lightning rods, each of the lightning rods is arranged in sequence along the extension direction of the cross arm, the lightning rod is protruded from the top of the cross arm, and a lightning wire is hung on the lightning rod.

[0012] In some embodiments, the wire outlet structure further comprises a second concrete foundation and an inclined support leg, the second concrete foundation is arranged on the same side of the two first concrete foundations along a first direction and is arranged to be embedded in the ground, and the bottom end of the inclined support leg is connected to the second concrete foundation, and the top end of the inclined support leg is connected to the top end of the column adjacent to the inclined support leg.

[0013] In some embodiments, the column comprises:

[0014] A first support leg and a second support leg, the top end of the first support leg is connected to the top end of the second support leg, and each of the first support leg and the second support leg is inclined from top to bottom towards a side away from each other, the cross arm is connected to the connection position of the first support leg and the second support leg and is perpendicular to the first support leg and the second support leg, and a stabilizing beam, two ends of the stabilizing beam are respectively connected to the middle part of the first support leg and the middle part of the second support leg.

[0015] The first concrete foundation comprises a first support foundation and a second support foundation, the first support foundation is connected to the bottom end of the first support leg, and the second support foundation is connected to the bottom end of the second support leg.

[0016] In some embodiments, the outgoing line structure further comprises a connecting girder, each of the first support foundations, each of the second support foundations, the first support foundation and the second support foundation of the same column, and the second concrete foundation and the first support foundation and the second support foundation of the adjacent column are connected by the connecting girder.

[0017] The application further provides a double-circuit outgoing line structure of a GIS device, which comprises the outgoing line structure according to any one of the above embodiments and two GIS busbars.

[0018] Each of the GIS busbars corresponds to each of the suspension assemblies, and each of the GIS busbars comprises three outgoing conductors, and the three outgoing conductors of each of the GIS busbars are connected to the bottom ends of the three strings of insulators of each of the suspension assemblies one by one.

[0019] In some embodiments, the outgoing line structure further comprises a cross beam, two ends of the cross beam are respectively connected to the middle parts of the columns, and the end parts of each of the GIS busbars are respectively installed on the top sides of the two ends of the cross beam.

[0020] In some embodiments, the double-circuit outgoing line structure of the GIS device further comprises a plurality of busbar supports, and the outgoing line structure further comprises a support beam.

[0021] The support beam is provided in three, and the three support beams are respectively connected to the cross beam in a vertical manner, two of the support beams are respectively connected to the two ends of the cross beam, and the two support beams each have one end protruding from the front side of the cross beam, and the other support beam is connected to the middle part of the cross beam, and one end of the other support beam protrudes from the rear side of the cross beam.

[0022] The plurality of busbar supports are arranged in a spaced manner on the top parts of the support beams and the cross beam, and each of the GIS busbars is arranged on the cross beam and each of the support beams through the plurality of busbar supports.

[0023] The outgoing line structure and the double-circuit outgoing line structure of the GIS device provided by the embodiments of the application have the following beneficial effects compared with the prior art:

[0024] By setting the crosspieces protruding from the columns, two edge insulators among the six insulators for suspending the conductors are arranged at the cantilevered position of the crosspieces, and the remaining four insulators are arranged between the two columns, so that the number of columns is reduced to only two; and due to this design, the distance between the insulators is optimized under the premise of ensuring the safe distance between the phase conductors, the total width of the double-circuit outgoing line structure is greatly shortened, the land area of the outgoing line structure is saved, and the construction cost is saved;

[0025] By additionally arranging a crossbeam between the two columns, support can be provided for the GIS bus, and the end of the GIS bus is installed on the crossbeam, so that the GIS bus support is integrated into the outgoing line structure, thereby eliminating the need to separately arrange the GIS bus support on the ground, reducing the number of foundations under the GIS device outgoing line structure, facilitating the planning of the GIS power distribution device of the power plant or the cable channel of the substation, and greatly saving the construction cost and construction period. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic view of a typical existing 220kV double-circuit door-type outgoing line structure;

[0027] Figure 2 is a foundation layout of the 220kV double-circuit door-type outgoing line structure in Figure 1

[0028] Figure 3 is a layout of an existing GIS bus;

[0029] Figure 4 is a front view of the double-circuit outgoing line structure of the GIS device according to the embodiment of the application;

[0030] Figure 5 is a side view of the double-circuit outgoing line structure of the GIS device according to the embodiment of the application;

[0031] Figure 6 is a top view of the double-circuit outgoing line structure of the GIS device according to the embodiment of the application;

[0032] In the figure, 101 is a herringbone column; 102 is an inclined support leg; 103 is a device foundation; 104 is a GIS bus; 105 is a bus support;

[0033] 1 is a crosspiece; 2 is a column; 21 is a first support leg; 22 is a second support leg; 23 is a stabilizing beam; 3 is a first concrete foundation; 31 is a first support foundation; 32 is a second support foundation; 4 is a suspension assembly; 41 is an insulator; 5 is a crossbeam; 6 is a support beam; 7 is a lightning rod; 8 is a lightning conductor; 9 is a second concrete foundation; 10 is an inclined support leg; 11 is a tie beam; 12 is a GIS bus; 13 is a conductor; 14 is a bus support; 15 is a phase divider; and 16 is an outgoing line bushing.​ Detailed Implementation

[0034] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0035] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0036] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] like Figures 4 to 6 As shown, a preferred embodiment of the present invention includes a line-out structure comprising a crossarm 1, two columns 2, a first concrete foundation 3, and two sets of suspension components 4; the two columns 2 are spaced apart along a first direction; the first concrete foundation 3 is provided one-to-one with the columns 2, and is located at the bottom of the columns 2 and is used to be buried underground; the crossarm 1 is connected to the top of the two columns 2 respectively, and the two ends of the crossarm 1 protrude from one of the columns 2 in a cantilevered manner; the two sets of suspension components 4 are arranged sequentially along the crossarm 1, and each suspension component 4 includes three strings of insulators 41 arranged sequentially at intervals, in one set of suspension components 4, two strings of insulators 41 are located between the two columns 2, and the other string of insulators 41 is located at the cantilevered position of the crossarm 1.

[0038] Based on the outgoing line structure of the above embodiment, by setting a crossarm 1 that protrudes from both ends of the column 2, the two edge strings of insulators 41 of the six strings of insulators 41 used to suspend the conductors 13 are placed at the cantilever position of the crossarm 1, and the remaining four strings of insulators 41 are placed between the two columns 2, thereby reducing the number of columns 2 to only two. Moreover, due to this design, while ensuring a safe distance between each phase conductor 13, the spacing of the insulators 41 is optimized, which greatly shortens the total width of the double-circuit outgoing line structure, saves the floor space of the outgoing line structure, and saves construction costs.

[0039] In some preferred embodiments, the outgoing line structure further comprises a crossbeam 5, two ends of the crossbeam 5 are connected to the middle of each of the columns 2.

[0040] Based on the outgoing line structure of the above embodiments, by adding a crossbeam 5 between two columns 2, support can be provided for the GIS busbar 12, the end of the GIS busbar 12 is installed on the crossbeam 5, and the GIS busbar support is integrated into the outgoing line structure, so that it is not necessary to separately arrange the GIS busbar support on the ground, which not only reduces the number of foundations under the outgoing line structure of the GIS equipment, but also facilitates the planning of the GIS power distribution device of the power plant or the cable channel of the substation, and greatly saves the construction cost and construction period.

[0041] In some preferred embodiments, the outgoing line structure further comprises three support beams 6, the three support beams 6 are vertically connected to the crossbeam 5, two of the support beams 6 are connected to two ends of the crossbeam 5, and one end of each of the two support beams 6 protrudes from the front side of the crossbeam 5, and the other support beam 6 is connected to the middle of the crossbeam 5, and one end of the other support beam 6 protrudes from the rear side of the crossbeam 5. By arranging the support beams 6 connected to the crossbeam 5, the support beams 6 are arranged along the direction in which the GIS busbar 12 is outgoing from the power distribution station, and further support is provided for the GIS busbar 12.

[0042] In some embodiments, the outgoing line structure further comprises a plurality of lightning rods 7, each of the lightning rods 7 is arranged in a spaced manner along the extension direction of the crossbeam 1, the lightning rod 7 protrudes from the top of the crossbeam 1, and a lightning conductor 8 is hung on the lightning rod 7.

[0043] In some embodiments, the outgoing line structure further comprises a second concrete foundation 9 and an inclined support leg 10, the second concrete foundation 9 is arranged on the same side of the two first concrete foundations 3 along the first direction and is used to be buried underground, the bottom end of the inclined support leg 10 is connected to the second concrete foundation 9, and the top end of the inclined support leg 10 is connected to the top end of the column 2 adjacent thereto. By arranging the inclined support leg 10, the outgoing line structure can be more stable in the first direction.

[0044] In some embodiments, the column 2 comprises a first support leg 21, a second support leg 22, and a stabilizing beam 23, the top end of the first support leg 21 is connected with the top end of the second support leg 22, and each of the first support leg 21 and the second support leg 22 is inclined from top to bottom towards a side away from each other, the cross arm 1 is connected at the connection position of the first support leg 21 and the second support leg 22, and is perpendicular to the first support leg 21 and the second support leg 22 respectively, and the two ends of the stabilizing beam 23 are connected with the middle part of the first support leg 21 and the middle part of the second support leg 22 respectively; the first concrete foundation 3 comprises a first support foundation 31 and a second support foundation 32, the first support foundation 31 is connected with the bottom end of the first support leg 21, and the second support foundation 32 is connected with the bottom end of the second support leg 22. By setting the column 2 as a herringbone structure comprising the first support leg 21, the second support leg 22, and the stabilizing beam 23, and each support leg is firmly embedded in the underground foundation, the out-of-line frame can be more stable.

[0045] Further, the out-of-line frame further comprises a connecting beam 11, each of the first support foundations 31, each of the second support foundations 32, the first support foundation 31 and the second support foundation 32 of the same column 2, and the second concrete foundation 9 and the first support foundation 31 and the second support foundation 32 of the adjacent column 2 are connected by the connecting beam 11. By setting the connecting beam 11 connecting each foundation underground, the safety and stability of the out-of-line frame are further improved.

[0046] The application also provides a double-circuit out-of-line structure of a GIS device, which comprises the out-of-line frame according to any one of the above embodiments, and two GIS busbars 12.

[0047] Each of the GIS busbars 12 corresponds to each of the suspension assemblies 4, each of the GIS busbars 12 comprises three out-of-line conductors 13, and the three out-of-line conductors 13 of each of the GIS busbars 12 are connected to the bottom end of the three series of insulators 41 of each of the suspension assemblies 4 one by one.

[0048] In some embodiments, the out-of-line frame further comprises a cross beam 5, the two ends of the cross beam 5 are connected to the middle part of each of the columns 2 respectively, and the end part of each of the GIS busbars 12 is installed on the top side of the two ends of the cross beam 5 respectively.

[0049] In some embodiments, the double-circuit out-of-line structure of the GIS device further comprises a plurality of busbar supports 14, and the out-of-line frame further comprises a support beam 6.

[0050] The support beams 6 are arranged in three, and the three support beams 6 are respectively connected to the cross beams 5 vertically, wherein two support beams 6 are respectively connected to two ends of the cross beam 5, and one end of each of the two support beams 6 protrudes from the front side of the cross beam 5, and the other support beam 6 is connected to the middle part of the cross beam 5, and one end of the other support beam 6 protrudes from the rear side of the cross beam 5.

[0051] The bus support 14 is arranged between the support beam 6 and the cross beam 5, and the GIS bus 12 is arranged on the cross beam 5 and the support beam 6 through the bus support 14.

[0052] The end of each GIS bus 12 is provided with a phase separation node 15 and three outgoing line bushings 16, one end of each outgoing line bushing 16 is connected to the phase separation node 15, the other end of each outgoing line bushing 16 is open upward, and each outgoing line 13 corresponds to each outgoing line bushing 16 and extends from the outgoing line bushing 16 and is connected to the bottom end of each insulator 41.

[0053] As a power plant or substation connected to the power grid at a voltage level of 220kV, the outgoing line structure of the embodiment of the application is adopted, the second concrete foundation 9 and the first concrete foundation 3 are spaced apart by 3.7 meters along the first direction, the two columns 2 are spaced apart by 16 meters along the first direction, and the total width of the lower foundation along the first direction is 19.7 meters, which is reduced by 12.1 meters compared with the width of 31.8 meters of the existing 220kV double-circuit door-type outgoing line structure; the upper cross arm 1 is 22 meters long, and the insulators 41 at the overhanging position of the cross arm and the adjacent insulators 41 are spaced apart by 4 meters, and the two insulators 41 in the middle are spaced apart by 6 meters (a lightning rod 7 is arranged in the middle), and the total spacing between the insulators 41 is 4 meters+4 meters+6 meters+4 meters+4 meters=22 meters, which is reduced by 6 meters compared with the width of 28 meters of the top of the existing 220kV double-circuit door-type outgoing line structure.

[0054] In summary, the embodiment of the application provides a double-circuit outgoing line structure of an outgoing line structure and a GIS device, which sets the cross arm 1 protruding from the two columns 2, sets the edge two strings of insulators 41 in the six strings of insulators 41 for suspending the outgoing line 13 at the overhanging position of the cross arm 1, and sets the remaining four insulators 41 between the two columns 2, so that the number of columns 2 is reduced to only two; and due to this design, the spacing of the insulators 41 is optimized under the premise of ensuring a safe distance between the phase outgoing lines 13, the total width of the double-circuit outgoing line structure is greatly shortened, the land area occupied by the outgoing line structure is saved, and the construction cost is saved.

[0055] By adding a cross beam 5 between the two columns 2, support can be provided for the GIS bus 12, the end of which is mounted on the cross beam 5, and the GIS bus support is integrated into the outgoing line structure, so that it is not necessary to separately arrange the GIS bus support on the ground, which not only reduces the number of foundations under the outgoing line structure of the GIS device, but also facilitates the planning of the cable channel of the power plant GIS distribution device or the substation, and greatly saves the construction cost and construction period.

[0056] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make several improvements and replacements without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. An outgoing line architecture, characterized by, The utility model relates to a kind of out-of-line frame, including: Two columns, two the column is spaced apart along the first direction; First concrete foundation, the first concrete foundation is set with the column one-to-one, the first concrete foundation is located at the bottom end of the column, and is used to be buried underground; And Cross arm, the cross arm is connected to the top end of two the column respectively, and two ends of the cross arm are respectively protruding from a the column and arranged in cantilever;And two groups of suspension components, two the suspension components are sequentially arranged along the cross arm, and each the suspension component includes three strings of sequentially spaced insulators, in a group of the suspension components, two the insulators are located between two the column, and another string of the insulator is located at the position where the cross arm is arranged in cantilever; Crossbeam, two ends of the crossbeam are respectively connected to the middle part of each the column; Support beam, the support beam is arranged as three, three the support beam is respectively connected to the crossbeam vertically, wherein two the support beam is respectively connected to two ends of the crossbeam, and two the support beam is all one end protruding from the front side of the crossbeam, another the support beam is connected to the middle part of the crossbeam, and one end of another the support beam is protruding from the rear side of the crossbeam.

2. The wire-out architecture of claim 1, wherein, Still include several lightning rods, each the lightning rod is spaced apart along the extension direction of the cross arm, the lightning rod is protruding from the top of the cross arm, and the lightning rod is hung with lightning conductor.

3. The wire-out architecture of claim 1, wherein, Still include: Second concrete foundation, the second concrete foundation is set on the same side of two the first concrete foundation along the first direction, and is used to be buried underground; Inclined support foot, the bottom end of the inclined support foot is connected with the second concrete foundation, and the top end of the inclined support foot is connected with the top end of the column adjacent thereto.

4. The outlet architecture of claim 3, wherein, The column includes: First support foot, second support foot and stable beam, the top end of the first support foot is connected with the top end of the second support foot, and each the first support foot and the second support foot are gradually inclined to the side away from each other from top to bottom, the cross arm is connected to the connection position of the first support foot and the second support foot, and is respectively perpendicular to the first support foot and the second support foot, and the stable beam is connected to the middle part of the first support foot and the middle part of the second support foot. The first concrete foundation includes first support foundation and second support foundation, the first support foundation is connected to the bottom end of the first support foot, and the second support foundation is connected to the bottom end of the second support foot.

5. The outlet architecture of claim 4, wherein, Still include joint girder, each the first support foundation, each the second support foundation, the first support foundation and the second support foundation of the same column, the second concrete foundation and the first support foundation and the second support foundation of the adjacent column are connected through the joint girder.

6. A double circuit outgoing line structure of a GIS apparatus, characterized by comprising: Including: The out-of-line frame of any one of claims 1-5; And Two GIS busbars, each the GIS busbar corresponds to each the suspension component, and each the GIS busbar includes three out-of-line wires, and the three out-of-line wires of each the GIS busbar are connected to the bottom end of three strings of insulators of each the suspension component one-to-one.

7. The double circuit outgoing line structure of GIS apparatus according to claim 6, characterized in that, The outgoing line structure further comprises crossbeams, two ends of each crossbeam are connected to the middle part of each column; The end part of each GIS bus is installed on the top side of two ends of the crossbeam.

8. The double circuit outgoing line structure of GIS apparatus according to claim 7, characterized in that, Further comprising several bus supports; The outgoing line structure further comprises support beams, three support beams are provided, and the three support beams are respectively connected to the crossbeam perpendicularly, two support beams are respectively connected to two ends of the crossbeam, and one end of each of the two support beams protrudes from the front side of the crossbeam, one support beam is connected to the middle part of the crossbeam, and one end of the support beam protrudes from the rear side of the crossbeam; The several bus supports are arranged on the top of each support beam and crossbeam, and each GIS bus is arranged on the crossbeam and each support beam through the several bus supports.

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