A 330kV HGIS Substation Frame Structure in High-Altitude Areas

Abstract

A 330kV HGIS substation frame structure in high altitude areas, comprising frame columns, with bus beams and outgoing line beams connected between the frame columns. The outgoing line beams include high-span outgoing line beams, lower-layer outgoing line beams, upper-layer outgoing line beams and reverse outgoing line beams; the bus beams are arranged parallel to the high-span outgoing line beams, the lower-layer outgoing line beams, upper-layer outgoing line beams and reverse outgoing line beams are arranged parallel to each other, and the reverse outgoing line beams are perpendicular to the high-span outgoing line beams; both the bus beams and the high-span outgoing line beams include two beam bodies arranged on the same horizontal plane, the lower-layer outgoing line beams and upper-layer outgoing line beams are arranged on the same vertical plane, and there is a spacing between the reverse outgoing line beams and this vertical plane; first-direction outgoing line hanging wires are arranged on the high-span outgoing line beams, second-direction outgoing line hanging wires are arranged on the lower-layer outgoing line beams and upper-layer outgoing line beams, reverse outgoing line hanging wires are arranged between the reverse outgoing line beams and the upper-layer outgoing line beams, and bus hanging wires are arranged on the bus beams. The present invention can better meet the structural stress requirements, while saving land, reducing costs and facilitating layout.

Description

Technical Field

[0001] The present invention belongs to the field of substation design and relates to a 330kV HGIS substation framework structure in high altitude areas. Background Art

[0002] Up to now, the 330kV distribution device of conventional 750kV / 330kV substations mostly adopts the steel pipe A-shaped column combined with triangular lattice beam scheme. The site elevation of the 750kV substation in Hainan, Qinghai is 2950m. The 330kV distribution device adopts the HGIS "C" type layout scheme. The framework of the 330kV HGIS "C" type distribution device belongs to a new structural system whether in terms of the structural system layout, the span of the beam, or the stress conditions. Among them, the busbar beam has a large span and needs to bear the tension of 6 conductors on one side. The outgoing line direction is two-way outgoing to the north and east. The outgoing line to the north adopts double-layer outgoing, and the outgoing line to the east is single-layer outgoing. Moreover, the heights of the three outgoing lines are not uniform, resulting in shear force on the column body of the framework column and relatively large unilateral tension on the upper part. For the conventional steel pipe A-shaped column combined with triangular lattice beam scheme, there are many beam-column connection nodes, the welding workload at the corbel is large and the stress is complex. For the two-way outgoing line, it is difficult to control the column top deflection of the steel pipe A-shaped column. The steel pipe A-shaped column combined with triangular lattice beam is no longer the optimal structural type to meet the technological requirements. Summary of the Invention

[0003] The purpose of the present invention is to address the problems of the complex structure, large floor area, high cost, and uneven stress of the steel pipe A-shaped column combined with triangular lattice beam in the above-mentioned prior art, and provide a 330kV HGIS substation framework structure in high altitude areas, which can better meet the structural stress requirements, save land, reduce costs, and facilitate layout.

[0004] To achieve the above purpose, the present invention has the following technical solutions:

[0005] A 330kV HGIS substation frame structure in high altitude areas, including several frame columns, with bus beams and multiple outgoing line beams connected between the frame columns. The outgoing line beams include high-span outgoing line beams, lower-layer outgoing line beams, upper-layer outgoing line beams, and reverse outgoing line beams. The bus beam is arranged parallel to the high-span outgoing line beam. The lower-layer outgoing line beam, upper-layer outgoing line beam, and reverse outgoing line beam are arranged parallel to each other. The reverse outgoing line beam is arranged perpendicular to the high-span outgoing line beam. Both the bus beam and the high-span outgoing line beam include two beam bodies arranged on the same horizontal plane. The lower-layer outgoing line beam and the upper-layer outgoing line beam are arranged on the same vertical plane, and there is a spacing between the reverse outgoing line beam and this vertical plane. In the height direction, the high-span outgoing line beam is at the highest position, and the heights of the upper-layer outgoing line beam, reverse outgoing line beam, and lower-layer outgoing line beam decrease in sequence. The bus beam is not higher than the lower-layer outgoing line beam. The high-span outgoing line beam is provided with outgoing line hanging wires in the first direction. The lower-layer outgoing line beam and the upper-layer outgoing line beam are provided with outgoing line hanging wires in the second direction. A reverse outgoing line hanging wire is arranged between the reverse outgoing line beam and the upper-layer outgoing line beam, and a bus hanging wire is arranged on the bus beam.

[0006] Preferably, the bus beam, high-span outgoing line beam, lower-layer outgoing line beam, upper-layer outgoing line beam, and reverse outgoing line beam are all hinged to the frame columns. The chord splicing joints of the frame columns, bus beam, high-span outgoing line beam, lower-layer outgoing line beam, upper-layer outgoing line beam, and reverse outgoing line beam are connected by flanges.

[0007] Preferably, the outgoing line interval width of the frame column is 24m, and the bus interval width is 44m.

[0008] Preferably, the frame column includes a lower section of the frame column and an upper section of the frame column. The lower section of the frame column adopts a rectangular variable-section lattice column, with the bottom root opening size of 1.8m×4.8m and the top root opening size of 1.8m×1.8m. The upper section of the frame column adopts a rectangular equal-section lattice column, with the column section size of 1.8m×1.8m.

[0009] Preferably, the beam bottom elevations of the bus beam and the lower-layer outgoing line beam are 22m. The beam bottom elevation of the reverse outgoing line beam is 28m. The beam bottom elevation of the upper-layer outgoing line beam is 34m. The beam bottom elevation of the high-span outgoing line beam (6) is 38.5m.

[0010] Preferably, the bus beam, high-span outgoing line beam, and lower-layer outgoing line beam all adopt rectangular equal-section lattice beams. The cross-section sizes of the bus beam, high-span outgoing line beam, and lower-layer outgoing line beam are 1.8m×2.0m.

[0011] Preferably, the upper-layer outgoing line beam and the reverse outgoing line beam both adopt rectangular equal-section lattice beams. The cross-section sizes of the upper-layer outgoing line beam and the reverse outgoing line beam are 1.8m×1.8m.

[0012] Preferably, ground wire columns are provided at the tops of the frame columns, and lightning rods are provided at the tops of the ground wire columns.

[0013] Preferably, the ground wire column adopts a lattice column with variable cross-section.

[0014] Preferably, all web members and chord members of the ground wire column are connected by full penetration welding.

[0015] Compared with the prior art, the present invention has the following beneficial effects: compared with the existing 330 kV double-layer and single-direction outgoing line frame, the present invention can realize a double-layer and two-way outgoing line structure. The 330 kV HGIS substation frame structure effectively reduces the floor area, and also saves the earthwork and foundation engineering quantity. In addition, compared with the existing double-layer single-side outgoing line frame, the double-layer and two-way outgoing line substation frame of the present invention can reduce the steel consumption. The substation frame structure of the present invention also optimizes the outgoing line layout scheme, can reduce the outgoing line deflection angle, saves the outgoing line spacing, thus facilitating the electrical layout, and is especially suitable for high altitude areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic three-dimensional view of the 330 kV HGIS substation frame structure in high altitude areas of the present invention;

[0017] Figure 2 Schematic sectional view of the outgoing line interval of the substation frame of the present invention;

[0018] Figure 3 Schematic perspective view of the substation frame of the present invention;

[0019] Figure 4 Schematic view of the beam and column structure on the bus side of the present invention;

[0020] FIG. 5(a) Schematic view of the upper and lower double-layer outgoing line beam and column structure of the present invention;

[0021] FIG. 5(b) Schematic view of the reverse outgoing line beam and column structure of the present invention;

[0022] FIG. 6(a) Schematic sectional view of the high-span outgoing line beam, bus beam and lower-layer outgoing line beam of the present invention;

[0023] FIG. 6(b) Schematic sectional view of the reverse outgoing line beam and upper-layer outgoing line beam of the present invention;

[0024] Figure 7 Schematic view of the frame column structure of the present invention;

[0025] Figure 8 Schematic view of the ground wire column and lightning rod structure of the present invention;

[0026] In the attached drawings: 1 - lower section of the framework column; 2 - upper section of the framework column; 3 - ground wire column; 4 - lightning rod; 5 - busbar beam; 6 - high-span outgoing line beam; 7 - lower-layer outgoing line beam; 8 - upper-layer outgoing line beam; 9 - reverse outgoing line beam; 10 - outgoing line hanging wire; 11 - reverse outgoing line hanging wire; 12 - busbar hanging wire. Detailed implementation manners

[0027] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] See Figure 1 、 Figure 2 As shown in

[0029] A 330 kV HGIS substation framework structure in high altitude areas includes several framework columns, with a busbar beam 5 and multiple outgoing line beams connected between the framework columns. In the embodiment, four framework columns are provided and arranged in a rectangle. The outgoing line beams include a high-span outgoing line beam 6, a lower-layer outgoing line beam 7, an upper-layer outgoing line beam 8, and a reverse outgoing line beam 9.

[0030] Among them, the busbar beam 5 is arranged in parallel with the high-span outgoing line beam 6, the lower-layer outgoing line beam 7 and the upper-layer outgoing line beam 8 are arranged in parallel with the reverse outgoing line beam 9, and the reverse outgoing line beam 9 is arranged perpendicular to the high-span outgoing line beam 6. Both the busbar beam 5 and the high-span outgoing line beam 6 include two beam bodies arranged on the same horizontal plane. The lower-layer outgoing line beam 7 and the upper-layer outgoing line beam 8 are arranged on the same vertical plane, and there is a spacing between the reverse outgoing line beam 9 and this vertical plane; in the height direction, the position of the high-span outgoing line beam 6 is the highest, and the heights of the upper-layer outgoing line beam 8, the reverse outgoing line beam 9, and the lower-layer outgoing line beam 7 decrease in sequence, and the busbar beam 5 is not higher than the lower-layer outgoing line beam 7.

[0030] The first-direction outgoing line hanging wire 10 is arranged on the high-span outgoing line beam 6, the second-direction outgoing line hanging wire 10 is arranged on the lower-layer outgoing line beam 7 and the upper-layer outgoing line beam 8. In the embodiment, the first-direction outgoing line hanging wire 10 and the second-direction outgoing line hanging wire 10 are perpendicular to each other. A reverse outgoing line hanging wire 11 is arranged between the reverse outgoing line beam 9 and the upper-layer outgoing line beam 8, and a busbar hanging wire 12 is arranged on the busbar beam 5.

[0031] See Figure 3 、 Figure 4, Figures 5(a) and 5(b), the width of the outgoing line interval of the framework is 24m, the width of the busbar interval is 44m, and the bottom elevations of the outgoing line beams and busbar beams are not at the same height. The bottom elevation of the lower outgoing line beams and busbar beams is 22m; the bottom elevation of the reverse outgoing line beam is 28m; the bottom elevation of the upper outgoing line beams is 34m; the bottom elevation of the high-span outgoing line beam is 38.5m.

[0032] The busbar beam 5, high-span outgoing line beam 6, lower outgoing line beam 7, upper outgoing line beam 8, and reverse outgoing line beam 9 are hinged to the framework columns; the splicing joints of the chord members of the framework columns and framework beams are connected by flanges to jointly form an integral stress-bearing system.

[0033] Referring to Figures 6(a) and 6(b), the busbar beam 5, high-span outgoing line beam 6, and lower outgoing line beam 7 all adopt rectangular equal-section lattice beams. Among them, the section sizes of the busbar beam 5, high-span outgoing line beam 6, and lower outgoing line beam 7 are 1.8m (width) × 2.0m (height). The upper outgoing line beam 8 and reverse outgoing line beam 9 both adopt rectangular equal-section lattice beams. Among them, the section sizes of the upper outgoing line beam 8 and reverse outgoing line beam 9 are 1.8m (width) × 1.8m (height).

[0034] Referring to Figure 7 , the framework column includes the lower section 1 of the framework column and the upper section 2 of the framework column. The lower section 1 of the framework column adopts a rectangular variable-section lattice column, the root opening size at the column bottom is 1.8m (short side) × 4.8m (long side), and the column top section is 1.8m (short side) × 1.8m (long side). The upper section 2 of the framework column adopts a rectangular equal-section lattice column, and the column section size is 1.8m (short side) × 1.8m (long side).

[0035] Referring to Figure 8 , ground wire columns 3 are provided at the column tops of the framework columns, and lightning rods 4 are provided at the tops of the ground wire columns 3. The ground wire columns 3 adopt rectangular variable-section lattice columns, and all web members and chord members are connected by penetrant welding. The lightning rod 4 adopts a single steel pipe cross-section needle body.

[0036] The 330kV HGIS substation framework structure in high altitude areas of the present invention has the following advantages:

[0037] (1) Small floor area; compared with the existing 330kV double-layer and single-direction outgoing line frameworks, the single span is generally 24m. Taking the 3-circuit outgoing line framework as an example, the total occupied length is 72m (taking the center line of the framework column), while using the double-layer and two-way outgoing line framework proposed by the present invention, the occupied length can be reduced by 24m. The root opening size of the framework column bottom is 1.8m (short side) × 4.8m (long side).

[0038] (2) Saving of earthwork and foundation engineering quantities: The double-layer and two-way outgoing line substation framework of the present invention reduces the earthwork engineering quantity by about 165 cubic meters and the foundation concrete engineering quantity by about 49 cubic meters compared with the existing double-layer single-side outgoing line framework.

[0039] (3) Steel consumption is saved: The double-layer and two-way outgoing line substation structure of the present invention reduces the steel consumption by about 20 tons compared with the existing double-layer single-sided outgoing line structure.

[0040] (4) Convenient electrical layout: The substation structure of the present invention optimizes the outgoing line layout scheme, reduces the outgoing line deflection angle, saves the outgoing line spacing, and is convenient for electrical layout.

[0041] The above description of the embodiments is for the convenience of those of ordinary skill in the art to understand and use the invention. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative labor. Therefore, the present invention is not limited to the above embodiments, and the improvements and modifications made by those skilled in the art without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. A 330kV HGIS substation frame structure in high altitude areas, characterized in that: It includes several frame columns, and between the frame columns, bus beams (5) and multiple outgoing line beams are connected. The outgoing line beams include high-span outgoing line beams (6), lower-layer outgoing line beams (7), upper-layer outgoing line beams (8) and reverse outgoing line beams (9); the bus beam (5) is arranged in parallel with the high-span outgoing line beam (6), the lower-layer outgoing line beam (7), the upper-layer outgoing line beam (8) and the reverse outgoing line beam (9) are arranged in parallel, and the reverse outgoing line beam (9) is arranged perpendicular to the high-span outgoing line beam (6); both the bus beam (5) and the high-span outgoing line beam (6) include two beam bodies arranged on the same horizontal plane, the lower-layer outgoing line beam (7) and the upper-layer outgoing line beam (8) are arranged on the same vertical plane, and there is a spacing between the reverse outgoing line beam (9) and this vertical plane; in the height direction, the position of the high-span outgoing line beam (6) is the highest, and the heights of the upper-layer outgoing line beam (8), the reverse outgoing line beam (9) and the lower-layer outgoing line beam (7) decrease in turn, and the bus beam (5) is not higher than the lower-layer outgoing line beam (7); on the high-span outgoing line beam (6), outgoing line hanging wires (10) in the first direction are arranged, on the lower-layer outgoing line beam (7) and the upper-layer outgoing line beam (8), outgoing line hanging wires (10) in the second direction are arranged, between the reverse outgoing line beam (9) and the upper-layer outgoing line beam (8), reverse outgoing line hanging wires (11) are arranged, and on the bus beam (5), bus hanging wires (12) are arranged; The bus beam (5), the high-span outgoing line beam (6) and the lower-layer outgoing line beam (7) all adopt rectangular equal-section lattice beams; Both the upper-layer outgoing line beam (8) and the reverse outgoing line beam (9) adopt rectangular equal-section lattice beams.

2. The 330kV HGIS substation frame structure in high altitude areas according to claim 1, characterized in that: The bus beam (5), the high-span outgoing line beam (6), the lower-layer outgoing line beam (7), the upper-layer outgoing line beam (8) and the reverse outgoing line beam (9) are all hinged to the frame columns, and the chord splicing joints of the frame columns, the bus beam (5), the high-span outgoing line beam (6), the lower-layer outgoing line beam (7), the upper-layer outgoing line beam (8) and the reverse outgoing line beam (9) are connected by flanges.

3. The 330kV HGIS substation frame structure in high altitude areas according to claim 1, characterized in that: The outgoing line interval width of the frame column is 24m, and the bus interval width is 44m.

4. The 330kV HGIS substation frame structure in high altitude areas according to claim 1, characterized in that: The frame column includes a lower section of the frame column (1) and an upper section of the frame column (2); The lower section of the frame column (1) adopts a rectangular variable-section lattice column, the bottom root opening size is 1.8m×4.8m, and the top root opening size of the column is 1.8m×1.8m; the upper section of the frame column (2) adopts a rectangular equal-section lattice column, and the column section size is 1.8m×1.8m.

5. The 330kV HGIS substation frame structure in high altitude areas according to claim 1, characterized in that: The bottom elevation of the bus beam (5) and the lower outgoing line beam (7) is 22 m; the bottom elevation of the reverse outgoing line beam (9) is 28 m; the bottom elevation of the upper outgoing line beam (8) is 34 m; the bottom elevation of the high-span outgoing line beam (6) is 38.5 m.

6. The 330 kV HGIS substation structure in high altitude areas according to claim 1, characterized in that: The cross-sectional dimensions of the bus beam (5), the high-span outgoing line beam (6) and the lower outgoing line beam (7) are 1.8 m × 2.0 m.

7. The 330 kV HGIS substation structure in high altitude areas according to claim 1, characterized in that: The cross-sectional dimensions of the upper outgoing line beam (8) and the reverse outgoing line beam (9) are 1.8 m × 1.8 m.

8. The 330 kV HGIS substation structure in high altitude areas according to claim 1, characterized in that: Ground wire columns (3) are provided at the column tops of the frame columns, and lightning rods (4) are provided at the tops of the ground wire columns (3).

9. The 330 kV HGIS substation structure in high altitude areas according to claim 8, characterized in that: The ground wire column (3) adopts a lattice column with variable cross-section.

10. The 330 kV HGIS substation structure in high altitude areas according to claim 8 or 9, characterized in that: All web members and chord members of the ground wire column (3) are connected by penetrant welding.

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