An indoor layout structure of an 800kV GIS control cubicle

Abstract

An indoor layout structure of an 800kV GIS control cubicle, comprising a support beam arranged on a GIS full-length main cable trench. The 800kV GIS control cubicle is arranged above the GIS full-length main cable trench through the support beam. The 800kV GIS control cubicle is connected downward to the main cable in the GIS full-length main cable trench. A GIS cable branch trench is arranged in the side wall direction of the GIS full-length main cable trench, and the cable in the GIS cable branch trench is connected to the main cable in the GIS full-length main cable trench from the side direction. Since the 800kV GIS control cubicle is large in scale, has many outgoing lines and a relatively long transverse dimension, by arranging the 800kV GIS control cubicle above the GIS full-length main cable trench, the present invention can reduce the width of the GIS room workshop without affecting cable wiring and convenient operation and maintenance, greatly reduce the building volume of the GIS room, and effectively reduce the investment of the entire project.

Description

Technical Field

[0001] The invention belongs to the field of extra-high voltage power transmission and transformation, and particularly relates to an indoor layout structure of an 800 kV GIS control cubicle. Background Art

[0002] With the rapid development of China's power grid construction, there are more and more extra-high voltage substation projects. The 800 kV GIS equipment built in special environmental areas frequently fails due to environmental impacts, posing a great threat to the safe operation of the power grid. To improve the operating environment of 800 kV GIS, more and more 800 kV GIS adopts indoor layout. The indoor-layout 800 kV GIS not only needs to consider the technical economy of the GIS itself, but also needs to consider reducing the overall volume and comprehensive cost of the GIS room workshop, and saving project investment to the greatest extent.

[0003] For the convenience of wiring and operation and maintenance, the 800 kV GIS control cubicle with conventional outdoor layout is generally arranged beside the main cable trench of the GIS, and is connected to the main cable trench through a cable branch trench. Since the scale of the 750 kV substation is large, when the 800 kV GIS adopts indoor layout, the investment in the GIS room building is relatively too large in proportion to the whole project. If the 800 kV GIS control cubicle with indoor layout is arranged in the same way as the outdoor layout, the control cubicle will become one of the factors affecting the width of the GIS room workshop. The width of the GIS room workshop needs to consider the floor area occupied by the control cubicle, and then the overall volume of the building increases, resulting in an increase in the overall project investment. Summary of the Invention

[0004] The purpose of the invention is to provide an indoor layout structure of an 800 kV GIS control cubicle to solve the problem that the indoor layout of the 800 kV GIS control cubicle in the prior art occupies the width of the GIS room, reduce the volume of the GIS room building, and reduce the overall project investment.

[0005] To achieve the above purpose, the invention has the following technical solutions:

[0006] An indoor layout structure of an 800 kV GIS control cubicle includes a support beam arranged on the GIS long main cable trench. The 800 kV GIS control cubicle is arranged above the GIS long main cable trench through the support beam. The 800 kV GIS control cubicle is connected downward to the main cable in the GIS long main cable trench. A GIS cable branch trench is arranged in the side wall direction of the GIS long main cable trench, and the cable in the GIS cable branch trench is connected to the main cable in the GIS long main cable trench from the side direction.

[0007] Preferably, the support beam includes a support side wall disposed on the bottom floor of the cable trench and a support top plate disposed on the top of the support side wall. The support side wall is arranged along the wall of the GIS long main cable trench, and the 800 kV GIS switchgear control cabinet is installed on the support top plate.

[0008] Preferably, a special-shaped cover plate is arranged on the support top plate, and a maintenance hole cover plate that can be opened is arranged on the special-shaped cover plate. The support top plate is opened at the position corresponding to the maintenance hole cover plate. Opening the maintenance hole cover plate can enter the interior of the GIS long main cable trench; several through holes for observing the interior of the GIS long main cable trench are provided on the maintenance hole cover plate.

[0009] Preferably, the special-shaped cover plate is horizontally embedded in the support top plate.

[0010] Preferably, the four corners of the bottom surface of the 800 kV GIS switchgear control cabinet are fixed on the horizontal plane formed by the support top plate and the special-shaped cover plate through embedded steel plates.

[0011] Preferably, through holes for the wiring of the 800 kV GIS switchgear control cabinet to pass through are provided on the special-shaped cover plate.

[0012] Preferably, the maintenance hole cover plate is horizontally arranged in the area outside the installation of the 800 kV GIS switchgear control cabinet on the special-shaped cover plate.

[0013] Preferably, a hidden embedded handle is provided on the maintenance hole cover plate.

[0014] Preferably, through holes for the cables in the GIS cable branch trench to pass through are provided on the support side wall.

[0015] Compared with the prior art, the present invention has the following beneficial effects: Since the 800 kV GIS switchgear control cabinet is large in scale, has many outgoing lines and a long transverse dimension, by arranging the 800 kV GIS switchgear control cabinet above the GIS long main cable trench, it effectively solves the problem that after the 800 kV GIS equipment is arranged indoors, the width dimension of the GIS room factory building increases, and then the volume of the 800 kV GIS room increases, resulting in a high project investment. The present invention can reduce the width of the GIS room factory building without affecting the cable wiring and the convenience of operation and maintenance, greatly reduce the building volume of the GIS room, and effectively reduce the investment of the entire project.

[0016] Furthermore, the special-shaped cover plate of the present invention is horizontally embedded in the support top plate, and the maintenance hole cover plate is horizontally arranged in the area outside the installation of the 800 kV GIS switchgear control cabinet on the special-shaped cover plate, and a hidden embedded handle is provided on the maintenance hole cover plate. On the one hand, it can facilitate the installation of the 800 kV GIS switchgear control cabinet, and on the other hand, it does not affect the opening and closing of the cabinet door of the 800 kV GIS switchgear control cabinet. Description of the Drawings

[0017] Figure 1 Partial top view schematic diagram of the indoor layout structure of the 800kV GIS control cabinet of the present invention;

[0018] Figure 2 Profile side view schematic diagram of the indoor layout structure of the 800kV GIS control cabinet of the present invention;

[0019] In the attached drawings: 1 - 800kV GIS control cabinet; 2 - support beam; 3 - special-shaped cover plate; 4 - embedded steel plate; 5 - wiring through-hole of the GIS control cabinet; 6 - inspection hole cover plate; 7 - hidden embedded handle; 8 - long GIS main cable trench; 9 - GIS cable branch trench. Specific embodiments

[0020] The present invention will be further described in detail below with reference to the attached drawings.

[0021] See Figure 1 , Figure 2 , an indoor layout structure of an 800kV GIS control cabinet, including a support beam 2 provided on the long GIS main cable trench 8. The 800kV GIS control cabinet 1 is arranged above the long GIS main cable trench 8 through the support beam 2. The 800kV GIS control cabinet 1 is connected downward to the main cable in the long GIS main cable trench 8. A GIS cable branch trench 9 is provided in the side wall direction of the long GIS main cable trench 8. The cable in the GIS cable branch trench 9 is connected to the main cable in the long GIS main cable trench 8 from the side direction.

[0022] The support beam 2 includes a support side wall provided on the bottom floor of the cable trench and a support top plate provided on the top of the support side wall, presenting a rectangular frame beam structure as a whole. The support side wall is arranged along the trench wall of the long GIS main cable trench 8. The 800kV GIS control cabinet 1 is installed on the support top plate. A special-shaped cover plate 3 is provided on the support top plate. An inspection hole cover plate 6 that can be opened is provided on the special-shaped cover plate 3. The support top plate is opened at the position corresponding to the inspection hole cover plate 6. Opening the inspection hole cover plate 6 can enter the interior of the long GIS main cable trench 8; several through-holes for observing the interior of the long GIS main cable trench 8 are provided on the inspection hole cover plate 6. The special-shaped cover plate 3 is horizontally embedded in the support top plate, and the special-shaped cover plate 3 is cast in place.

[0023] The four corners of the bottom surface of the 800kV GIS control cabinet 1 are fixed on the horizontal plane formed by the support top plate and the special-shaped cover plate 3 through embedded steel plates 4. Through-holes for the wiring of the 800kV GIS control cabinet 1 to pass through are provided on the special-shaped cover plate 3. The inspection hole cover plate 6 is horizontally arranged in the area outside the installation of the 800kV GIS control cabinet 1 on the special-shaped cover plate 3. A hidden embedded handle 7 is provided on the inspection hole cover plate 6. Through-holes for the cable in the GIS cable branch trench 9 to pass through are provided on the support side wall.

[0024] The present invention appropriately deepens the depth of the GIS through - length main cable trench 8 by about 300 mm, so as to meet the operating space at the bottom of the switchgear control cabinet for construction personnel. The local cable trench for placing the 800 kV GIS switchgear control cabinet 1 is designed as a frame - shaped double - loop integral beam structure, and a special - shaped cover plate 3 with cast - in - place top surface reserved for the wiring through - hole 5 of the GIS switchgear control cabinet and the notch of the horizontal maintenance hole cover plate 6 is provided. The top surface of the special - shaped cover plate 3 is flush with the cover plates of the main cable trenches on both sides. The 800 kV GIS switchgear control cabinet 1 is placed on one side of it, and a horizontally openable maintenance hole cover plate 6 is arranged on the other side. The maintenance hole cover plate 6 also serves as a patrol passage. The cover plate handle is invisibly embedded and flush with the cover plate, which does not affect the opening of the switchgear control cabinet door and the passage of patrol personnel. The cover plate can be opened conveniently for maintenance during maintenance. The side wall of the local double - loop cable trench is provided with openings to communicate with the GIS equipment, which is convenient for cable wiring between the GIS equipment and the 800 kV GIS switchgear control cabinet 1.

[0025] The indoor layout structure of the 800 kV GIS switchgear control cabinet of the present invention has at least the following advantages:

[0026] 1. The investment in appropriately deepening the main cable trench is much less than the investment in increasing the volume of the GIS plant building.

[0027] 2. Through the special design of the local cable trench, the 800 kV GIS switchgear control cabinet is moved from the side of the main cable trench to the upper side of the cable trench, solving the problem that the switchgear control cabinet occupies the width of the GIS room, greatly reducing the building volume of the GIS room, and reducing the overall project investment.

[0028] 3. The side wall of the local cable trench is provided with openings to communicate with the GIS equipment. The switchgear control cabinet is placed on the main cable trench, which does not affect the cable connection between the GIS equipment and the switchgear control cabinet.

[0029] 4. The maintenance cover plate of the local cable trench also serves as a patrol passage. The cover plate handle is embedded invisibly and flush with the cover plate, which does not affect the opening of the switchgear control cabinet door and the passage of patrol personnel. The cover plate can be opened conveniently for maintenance during maintenance.

[0030] 5. The side wall of the local double - loop cable trench is provided with openings to communicate with the GIS equipment, which is convenient for cable wiring between the GIS equipment and the switchgear control cabinet.

[0031] 6. The special design of the local cable trench can be used in the layout design of the switchgear control cabinet when the 800 kV GIS is arranged indoors or when other voltage - level GIS equipment is arranged indoors. It can reduce the width of the GIS room, greatly reduce the building volume of the GIS room, reduce the project investment, and has good economic benefits.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the technical solutions of the present invention. Those skilled in the art should understand that without departing from the spirit and principle of the present invention, the technical solutions can be subject to several simple modifications and substitutions, and these modifications and substitutions also fall within the protection scope covered by the claims.

Claims

1. An indoor layout structure of an 800kV GIS control cubicle, characterized in that: It includes a support beam (2) arranged on the GIS through main cable trench (8). The 800kV GIS control cubicle (1) is arranged above the GIS through main cable trench (8) through the support beam (2). The 800kV GIS control cubicle (1) is connected downward to the main cable in the GIS through main cable trench (8). A GIS cable branch trench (9) is arranged in the side wall direction of the GIS through main cable trench (8). The cable in the GIS cable branch trench (9) is connected to the main cable in the GIS through main cable trench (8) from the side direction; the support beam (2) includes a support side wall arranged on the bottom floor of the cable trench and a support top plate arranged on the top of the support side wall. The support side wall is arranged along the trench wall of the GIS through main cable trench (8). The 800kV GIS control cubicle (1) is installed on the support top plate; a special-shaped cover plate (3) is arranged on the support top plate. An inspection hole cover plate (6) that can be opened is arranged on the special-shaped cover plate (3). The support top plate is open at the position corresponding to the inspection hole cover plate (6). Opening the inspection hole cover plate (6) can enter the interior of the GIS through main cable trench (8); several through holes for observing the interior of the GIS through main cable trench (8) are opened on the inspection hole cover plate (6); a through hole for the wiring of the 800kV GIS control cubicle (1) to pass through is opened on the special-shaped cover plate (3); a through hole for the cable in the GIS cable branch trench (9) to pass through is opened on the support side wall.

2. The indoor layout structure of an 800kV GIS control cubicle according to claim 1, characterized in that: The special-shaped cover plate (3) is horizontally embedded in the support top plate.

3. The indoor layout structure of the 800kV GIS control cabinet according to claim 2, characterized in that: The four corners of the bottom surface of the 800kV GIS control cubicle (1) are fixed on the horizontal plane formed by the support top plate and the special-shaped cover plate (3) through embedded steel plates (4).

4. The indoor layout structure of the 800kV GIS control cabinet according to claim 3, characterized in that: The inspection hole cover plate (6) is horizontally arranged in the area outside the installation of the 800kV GIS control cubicle (1) on the special-shaped cover plate (3).

5. The indoor layout structure of an 800kV GIS control cubicle according to claim 1 or 4, characterized in that: A concealed embedded handle (7) is arranged on the inspection hole cover plate (6).

Images