Multi-directional outgoing line structure and construction method of 330kV HGIS power distribution equipment

Abstract

This invention discloses a multi-directional outgoing line structure and construction method for a 330kV HGIS power distribution device. The multi-directional outgoing line structure includes a "C"-shaped arrangement of the 330kV HGIS equipment. The HGIS equipment connects to two 330kV busbars. Voltage transformers and surge arresters on the outgoing sides of the two busbars are arranged horizontally on both sides of the HGIS equipment. A double-layer horizontal incoming and outgoing line frame supports the installation of the upper-layer outgoing line's vertical hanging beam. Horizontal crossovers for the upper-layer outgoing lines are installed on the double-layer horizontal incoming and outgoing line frame, and vertical crossovers for the upper-layer outgoing lines are installed on the vertical hanging beams. If the upper-layer outgoing line is horizontal, upper-layer horizontal outgoing line suspension strings and jumpers are installed; if the upper-layer outgoing line is vertical, upper-layer vertical outgoing line suspension strings and jumpers are installed, along with connecting wires between the vertical and horizontal crossovers. This invention's outgoing line structure saves steel and floor space.

Description

Technical Field

[0001] This invention belongs to the field of ultra-high voltage power transmission and transformation, specifically relating to a multi-directional outgoing line structure and construction method for a 330kV HGIS power distribution device. Background Technology

[0002] With the rapid development of power grid construction, the scale of ultra-high voltage substation projects is becoming increasingly larger. Due to the special environmental conditions in Northwest China, such as high altitude, large temperature differences, and strong ultraviolet radiation, 330kV distribution equipment is increasingly adopting a "C"-type arrangement of 330kV HGIS equipment. This arrangement allows two outgoing lines to be routed in the same direction from one bay, offering advantages such as high equipment reliability, compact layout, and small footprint, and is being used in an increasing number of substations. However, due to the limitations of the HGIS equipment type, all outgoing lines can only run in the same direction.

[0003] With the limitations of substation line corridors, the requirement for 330kV outgoing lines in different directions is becoming increasingly urgent. The installation of high-voltage reactors and other equipment on the 330kV outgoing line side has led to increasingly obvious problems such as irregular layout of power distribution equipment, large land area, and difficulty in land acquisition. Therefore, it is necessary to optimize the outgoing lines of the "C"-shaped 330kV HGIS power distribution equipment. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-directional outgoing line structure and construction method for a 330kV HGIS power distribution device, which solves the problem that the "C"-shaped 330kV HGIS power distribution equipment can only outgoing lines in one direction due to the limitations of the HGIS equipment type. This outgoing line structure can be flexibly matched with the line corridor, save materials, save land area, and reduce the total investment of the project.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A multi-directional outgoing line structure for a 330kV HGIS distribution device includes a "C"-shaped arrangement of 330kV HGIS equipment. The "C"-shaped 330kV HGIS equipment connects to two 330kV busbars. The voltage transformers and surge arresters on the outgoing sides of the two outgoing lines of the "C"-shaped 330kV HGIS equipment are arranged horizontally within the "C"-shaped 330kV busbars. On both sides of the HGIS equipment, a vertical hanging beam for the upper-level outgoing line is installed via a double-layer structure for horizontal incoming and outgoing lines. A horizontal crossover for the upper-level outgoing line is installed on the double-layer structure, and a vertical crossover for the upper-level outgoing line is installed on the vertical hanging beam. If the upper-level outgoing line is horizontal, a suspension string and jumper wire for the upper-level horizontal outgoing line are installed. If the upper-level outgoing line is vertical, a suspension string, jumper wire for the upper-level vertical outgoing line, and a connecting line between the vertical crossover and the horizontal crossover for the upper-level outgoing line are installed.

[0007] As a preferred embodiment of the multi-directional outgoing line structure of the 330kV HGIS power distribution device of the present invention, the horizontal incoming and outgoing line double-layer frame and the upper outgoing line vertical hanging beam are constructed in one step.

[0008] As a preferred embodiment of the multi-directional outgoing line structure of the 330kV HGIS power distribution device of the present invention, the upper-level outgoing line is constructed in one step across the horizontal direction.

[0009] As a preferred embodiment of the multi-directional outgoing line structure of the 330kV HGIS power distribution device of the present invention, the upper-level outgoing line is constructed in one step across the vertical direction.

[0010] As a preferred embodiment of the multi-directional outgoing line structure of the 330kV HGIS power distribution device of the present invention, the upper horizontal outgoing line suspension string and the upper horizontal outgoing line jumper are detachable structures.

[0011] As a preferred embodiment of the multi-directional outgoing line structure of the 330kV HGIS power distribution device of the present invention, the upper vertical outgoing line suspension string, the upper vertical outgoing line jumper and the connecting line are detachable structures.

[0012] As a preferred embodiment of the multi-directional outgoing line structure of the 330kV HGIS power distribution device of the present invention, the upper horizontal outgoing line suspension string has the same structure as the upper vertical outgoing line suspension string.

[0013] As a preferred embodiment of the multi-directional outgoing line structure of the 330kV HGIS power distribution device of the present invention, the upper horizontal outgoing line jumper structure is the same as the upper vertical outgoing line jumper structure.

[0014] A construction method for a multi-directional outgoing line structure of a 330kV HGIS power distribution device includes the following steps:

[0015] If the upper-level outgoing line is changed from horizontal to vertical, keep the "C"-shaped 330kV HGIS equipment unchanged, only remove the upper-level horizontal outgoing line suspension string and upper-level horizontal outgoing line jumper, and install them at the corresponding positions of the upper-level vertical outgoing line suspension string and upper-level vertical outgoing line jumper. At the same time, install the connecting line between the upper-level vertical outgoing line crossover and the upper-level horizontal outgoing line crossover.

[0016] If the upper-level outgoing line is changed from vertical to horizontal, keep the "C"-shaped 330kV HGIS equipment unchanged, only remove the upper-level vertical outgoing line suspension string and upper-level vertical outgoing line jumper, and install them in the corresponding positions of the upper-level horizontal outgoing line suspension string and upper-level horizontal outgoing line jumper. At the same time, remove the connecting line between the upper-level vertical outgoing line crossover and the upper-level horizontal outgoing line crossover.

[0017] Compared to existing technologies, this invention has at least the following advantages: The multi-directional outgoing line structure of this 330kV HGIS distribution device does not require changes to the wiring method or layout of the "C"-shaped 330kV HGIS equipment. It enables the upper-level outgoing lines to extend both horizontally and vertically, and no modifications to the structure or hanging beams are needed when changing the direction of the upper-level outgoing lines. If the upper-level outgoing lines extend horizontally, upper-level horizontal outgoing line suspension strings and jumpers are installed. If the upper-level outgoing lines extend vertically, upper-level vertical outgoing line suspension strings, jumpers, and connecting lines between the vertical and horizontal crossover lines of the upper-level outgoing lines are installed. When interchangeable between vertical and horizontal outgoing lines, the HGIS equipment wiring and layout remain unchanged. No additional equipment or structural modifications are required; only connecting lines, jumpers, and suspension strings need to be installed or removed. Power outage time is short, construction and installation are convenient, and modification costs are saved. The multi-directional outgoing line structure proposed in this invention can be flexibly matched with the line corridor without increasing equipment or space, which can solve the problem of limited land acquisition, while saving steel consumption, saving land area, and reducing project investment. Attached Figure Description

[0018] Figure 1 This is a complete bay wiring diagram of the multi-directional outgoing line structure of the 330kV HGIS power distribution device of the present invention;

[0019] Figure 2 This is a complete bay plan view of the multi-directional outgoing line structure of the 330kV HGIS power distribution device of the present invention;

[0020] Figure 3 for Figure 2The figure shown is a complete cross-sectional structural diagram of the present invention, section I-I;

[0021] Figure 4 for Figure 2 The figure shown is a complete cross-sectional structural diagram of the present invention, section II-II.

[0022] In the diagram: 1 - 330kV HGIS equipment arranged in a "C" shape; 2 - Voltage transformer on the lower outgoing line side; 3 - Surge arrester on the lower outgoing line side; 4 - Voltage transformer on the upper outgoing line side; 5 - Surge arrester on the upper outgoing line side; 6 - Horizontal incoming line frame; 7 - Horizontal outgoing line frame; 8 - Vertical hanging beam for the first upper outgoing line; 9 - Vertical hanging beam for the second upper outgoing line; 10 - Horizontal crossover for the upper outgoing line; 11 - Vertical crossover for the upper outgoing line; 12 - Suspension string for the upper vertical outgoing line; 13 - Jumper wire for the upper vertical outgoing line; 14 - Suspension string for the upper horizontal outgoing line; 15 - Jumper wire for the upper horizontal outgoing line; 16 - Connecting wire. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0024] Based on the conventional "C"-shaped 330kV HGIS power distribution device, this invention, without changing the wiring method or equipment layout, achieves that the upper-level outgoing lines can be both horizontal and vertical, and can be converted between vertical and horizontal outgoing lines as needed, by changing the bay frame structure and wiring method.

[0025] Please refer to 1. The multi-directional outgoing line structure of the 330kV HGIS power distribution device in this embodiment of the invention, taking a complete bay as an example, includes a 330kV HGIS device 1 arranged in a "C" shape, a lower-level outgoing line voltage transformer 2, a lower-level outgoing line surge arrester 3, an upper-level outgoing line voltage transformer 4, an upper-level outgoing line surge arrester 5, a horizontal incoming line frame 6, a horizontal outgoing line frame 7, a first upper-level outgoing line vertical hanging beam 8, a second upper-level outgoing line vertical hanging beam 9, an upper-level outgoing line horizontal crossover 10, an upper-level outgoing line vertical crossover 11, an upper-level vertical outgoing line suspension string 12, an upper-level vertical outgoing line jumper 13, an upper-level horizontal outgoing line suspension string 14, an upper-level horizontal outgoing line jumper 15, and a connecting line 16 between the upper-level outgoing line vertical crossover 11 and the upper-level outgoing line horizontal crossover 10.

[0026] Specifically, the 330kV HGIS equipment 1 with a "C" configuration connects to two 330kV busbars. Please refer to [link / reference]. Figure 2 and Figure 3The voltage transformers and surge arresters on the outgoing sides of the two outgoing lines of the "C"-shaped 330kV HGIS equipment 1 are arranged horizontally on both sides of the "C"-shaped 330kV HGIS equipment 1. The upper-layer outgoing line vertical hanging beam is installed via a double-layer horizontal incoming and outgoing line frame. The upper-layer outgoing line horizontal crossover 10 is installed on the double-layer horizontal incoming and outgoing line frame. Please refer to [link / reference]. Figure 4 A vertical crossover 11 for the upper-level outgoing lines is installed on the vertical hanging beam. The upper-level horizontal outgoing line suspension string 14 and the upper-level horizontal outgoing line jumper 15 are detachable structures. The upper-level vertical outgoing line suspension string 12, the upper-level vertical outgoing line jumper 13, and the connecting line 16 are also detachable structures. The upper-level horizontal outgoing line suspension string 14 and the upper-level vertical outgoing line suspension string 12 have the same structure, and the upper-level horizontal outgoing line jumper 15 and the upper-level vertical outgoing line jumper 13 have the same structure.

[0027] In one embodiment of the present invention, during the use of the multi-directional outgoing line structure of the 330kV HGIS power distribution device, if the upper-level outgoing line is horizontal, an upper-level horizontal outgoing line suspension string 14 and an upper-level horizontal outgoing line jumper 15 are installed, and the upper-level horizontal outgoing line crossover 10 is connected through the upper-level horizontal outgoing line suspension string 14 and the upper-level horizontal outgoing line jumper 15. If the upper-level outgoing line is vertical, an upper-level vertical outgoing line suspension string 12 and an upper-level vertical outgoing line jumper 13 are installed, as well as a connecting line 16 between the upper-level vertical outgoing line crossover 11 and the upper-level horizontal outgoing line crossover 10, and the upper-level vertical outgoing line crossover 11 is connected through the upper-level vertical outgoing line suspension string 12 and the upper-level vertical outgoing line jumper 13.

[0028] In one embodiment of the present invention, the horizontal incoming line frame 6, the horizontal outgoing line frame 7, the first upper-level outgoing line vertical hanging beam 8, and the second upper-level outgoing line vertical hanging beam 9 of the multi-directional outgoing line structure of the 330kV HGIS power distribution device are all constructed in one operation. The upper-level outgoing line horizontal crossover 10 is constructed in one operation. The upper-level outgoing line vertical crossover 11 is constructed in one operation.

[0029] The multi-directional outgoing line structure of the present invention has the advantages of flexible coordination with the line corridor, convenient construction and installation, saving equipment and land, saving investment, and improving the reliability of power grid operation, without changing the wiring method and layout of the "C"-shaped 330kV HGIS power distribution device. It has been successfully put into operation in engineering projects and has long-term promotion significance.

[0030] Another embodiment of the present invention provides a construction method for a multi-directional outgoing line structure of a 330kV HGIS power distribution device, comprising:

[0031] If the upper-level outgoing line is changed from horizontal to vertical, keep the "C"-shaped 330kV HGIS equipment 1 unchanged, only remove the upper-level horizontal outgoing line suspension string 14 and the upper-level horizontal outgoing line jumper 15, and install them at the corresponding positions of the upper-level vertical outgoing line suspension string 12 and the upper-level vertical outgoing line jumper 13. At the same time, install the connecting line 16 between the upper-level vertical outgoing line crossover 11 and the upper-level horizontal outgoing line crossover 10.

[0032] If the upper-level outgoing line is changed from vertical to horizontal, keep the "C"-shaped 330kV HGIS equipment 1 unchanged, only remove the upper-level vertical outgoing line suspension string 12 and the upper-level vertical outgoing line jumper 13, and install them at the corresponding positions of the upper-level horizontal outgoing line suspension string 14 and the upper-level horizontal outgoing line jumper 15. At the same time, remove the connecting line 16 between the upper-level vertical outgoing line crossover 11 and the upper-level horizontal outgoing line crossover 10.

[0033] As can be seen, when the vertical and horizontal outgoing lines of the multi-directional outgoing line structure of the 330kV HGIS power distribution device of the present invention are interchanged, the wiring and layout of the HGIS equipment remain unchanged. At the same time, there is no need to add other equipment or modify the structure. Only the connecting lines, jumpers and suspension strings need to be installed or removed. The power outage time is short, the construction and installation are convenient, and the modification cost is saved.

[0034] This invention, in the conventional "C"-shaped 330kV HGIS distribution equipment layout, without changing the wiring method or equipment layout, achieves a multi-directional outgoing line structure within the "C"-shaped 330kV HGIS distribution equipment bay by modifying the bay's structural framework and wiring method. This allows the upper-level outgoing lines within the bay to extend both horizontally and vertically, with the upper-level outgoing lines able to switch between vertical and horizontal directions as needed. Compared to the conventional "C"-shaped 330kV HGIS distribution equipment, this invention solves the drawback of the "C"-shaped layout, which is limited to one-way outgoing lines due to HGIS equipment type restrictions, without increasing the space required. It allows for flexible integration with the line corridor, resolving problems such as limited line corridor space, irregular layout of high-resistance power distribution equipment on the outgoing side, and difficulties in land acquisition. Furthermore, this technical solution requires no new equipment or space, saving equipment, steel consumption of the framework, and land area, thus reducing the total project investment.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the technical solution of the present invention in any way. Those skilled in the art should understand that, without departing from the spirit and principles of the present invention, the technical solution can be modified and replaced in several simple ways, and these modifications and replacements are all within the scope of protection covered by the claims.

Claims

1. A multi-directional outgoing line structure for a 330kV HGIS power distribution device, characterized in that: Includes a 330kV HGIS device (1) arranged in a "C" configuration. The 330kV HGIS device (1) in a "C" configuration connects two 330kV busbars. The voltage transformers and surge arresters on the outgoing sides of the two outgoing lines of the 330kV HGIS device (1) in a "C" configuration are arranged horizontally on the 330kV busbars in a "C" configuration. On both sides of the HGIS equipment (1); the upper layer outgoing vertical hanging beam is installed by a horizontal double-layer frame for incoming and outgoing lines, the upper layer outgoing horizontal crossover (10) is installed on the horizontal double-layer frame for incoming and outgoing lines, and the upper layer outgoing vertical crossover (11) is installed on the upper layer outgoing vertical hanging beam; if the upper layer outgoing line goes out horizontally, the upper layer horizontal outgoing line suspension string (14) and the upper layer horizontal outgoing line jumper (15) are installed; if the upper layer outgoing line goes out vertically, the upper layer vertical outgoing line suspension string (12), the upper layer vertical outgoing line jumper (13), and the connecting line (16) between the upper layer outgoing vertical crossover (11) and the upper layer outgoing horizontal crossover (10) are installed; The multi-directional outgoing line structure of the 330kV HGIS power distribution device does not require changing the wiring method and layout of the "C"-shaped 330kV HGIS equipment (1), and can realize that the upper-level outgoing line can be outgoing in both the horizontal and vertical directions; the horizontal in-line and outgoing double-layer structure and the upper-level outgoing line vertical hanging beam are constructed in one go. The upper horizontal cable outlet suspension string (14) and the upper horizontal cable outlet jumper (15) are detachable structures; the upper vertical cable outlet suspension string (12), the upper vertical cable outlet jumper (13), and the connecting line (16) are detachable structures; the upper horizontal cable outlet suspension string (14) and the upper vertical cable outlet suspension string (12) have the same structure; the upper horizontal cable outlet jumper (15) and the upper vertical cable outlet jumper (13) have the same structure.

2. The multi-directional outgoing line structure of the 330kV HGIS power distribution device according to claim 1, characterized in that, The upper-level outgoing line horizontal cross line (10) is constructed in one go.

3. The multi-directional outgoing line structure of the 330kV HGIS power distribution device according to claim 1, characterized in that, The upper-level outgoing line vertical cross line (11) is constructed in one go.

4. A construction method for a multi-directional outgoing line structure of a 330kV HGIS power distribution device as described in claim 1, characterized in that, Includes the following steps: If the upper-level outgoing line is changed from horizontal to vertical, keep the "C"-shaped 330kV HGIS equipment (1) unchanged, only remove the upper-level horizontal outgoing line suspension string (14) and the upper-level horizontal outgoing line jumper (15), and install them at the corresponding positions of the upper-level vertical outgoing line suspension string (12) and the upper-level vertical outgoing line jumper (13). At the same time, install the connecting line (16) between the upper-level vertical outgoing line crossover (11) and the upper-level horizontal outgoing line crossover (10). If the upper-level outgoing line is changed from vertical to horizontal, keep the "C"-shaped 330kV HGIS equipment (1) in place, only remove the upper-level vertical outgoing line suspension string (12) and the upper-level vertical outgoing line jumper (13), and install them at the corresponding positions of the upper-level horizontal outgoing line suspension string (14) and the upper-level horizontal outgoing line jumper (15). At the same time, remove the connecting line (16) between the upper-level vertical outgoing line crossover (11) and the upper-level horizontal outgoing line crossover (10).

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