CN104088491A - 220 kV transformer substation slope-type vertical arrangement method - Google Patents

Abstract

A slope-type vertical layout method for 220kV substations, using the natural topography of the hillside, the vertical design conforms to the natural topography, and arranges various equipment and structures according to the situation on the hillside. Leveling; the road perpendicular to the slope direction of the site, the operation trail and the operation floor perpendicular to the slope direction; the road perpendicular to the slope direction of the site shall be designed as an urban road at the high slope and curbstones shall be set; and the road shall be designed at the low slope It is a highway-type road; for the operation trail, it is also designed as an urban-type road at the high slope with curbstones; it is also designed as a highway-type road at the low slope. With the present invention, there is no need to carry out large-scale earthwork leveling, and on the premise of the natural balance of excavation and filling of the earthwork on the site, the height of the retaining wall is reduced, the amount of earthwork is reduced, the foundation treatment is convenient, the slope protection outside the wall and the occupied area are reduced, and at the same time, the Maintain the original appearance of the site and protect the environment.

Description

A slope-type vertical layout method for 220kV substation

technical field

The invention relates to a slope-type vertical arrangement method of a 220kV substation conforming to the natural terrain, arranging various equipment and buildings according to the situation on the mountain, and not performing large-scale earthwork leveling. the

Background technique

The vertical design of the substation generally adopts a flat slope or a stepped layout, and the station area needs to be leveled before the buildings and electrical equipment are arranged. As for the hilly landform, when designed according to the conventional vertical method, the damage to the mountain body will be greater, which will affect the stability of the mountain body, and will cause greater damage to the water and soil conservation, and will have an impact on the environment. Moreover, for the substations arranged in the existing way, the drainage performance is poor, and it is easy to cause water accumulation on the site.

With the release of the State Grid Corporation's "Two Types and One Industrialization" substation design guidelines, the design of substations puts more emphasis on the impact of production activities on the natural ecological environment. Change the traditional design idea, emphasize the protection of the environment, reduce the excavation of earth and stone, and maintain the original appearance of the site to the greatest extent. Realize the harmonious coexistence between substation and nature. the

Contents of the invention

The technical problem to be solved by the present invention is to overcome the above-mentioned defects in the prior art, and provide a slope-type vertical substation for 220kV substations that conforms to the natural terrain, arranges various equipment and structures according to the situation on the mountain, and does not carry out large-scale earthwork leveling. to the layout method.

The technical solution adopted by the present invention to solve its technical problems is:

A slope-type vertical layout method for 220kV substations, using the natural terrain of the hillside, the vertical design conforms to the natural terrain, and arranges various equipment (110kV power distribution devices, 220kV power distribution devices, main transformers, reactive power compensation devices, etc. ), buildings and structures shall be naturally balanced by excavation and filling of the earthwork on the site, and no large-scale earthwork leveling shall be carried out;

The natural balance of excavation and filling of the site refers to the removal of the surface layer of cultivated soil, and the trimming of each power distribution device site into a certain slope according to the natural terrain, while ensuring the balance of excavation and filling in the site, without the need to purchase or discard external earth;

Roads perpendicular to the slope direction of the site, operation trails and operation floors perpendicular to the direction of the slope, etc.;

For roads perpendicular to the slope direction of the site, urban-type roads are designed on the high slopes and curbstones are set; highway-type roads are designed on the low slopes, such design adapts to terrain changes and is conducive to rainwater flowing along the slopes direction through the road smoothly;

For the operation path perpendicular to the direction of the slope, it is also designed as an urban road with curbs at the high point of the slope; it is also designed as a highway road at the low point of the slope.

Further, in order to keep the 110kV and 220kV power distribution devices horizontal along the direction of the busbar, different lengths of the frame columns are selected to adapt to the changes in the slope of the site.

Further, for the operation floor, when the slope of the site is greater than 7%, it is designed as a platform type; when the slope of the site is less than 7%, it is designed as a slope type.

The invention fully studies the terrain of the station site, breaks the conventional design idea, and is better combined with the terrain. It arranges various equipment and structures according to the situation of the mountain, and takes the natural balance of excavation and filling of the earthwork on the site as the premise to reduce the height of the retaining wall and reduce the earthwork. In order to facilitate the foundation treatment, reduce the slope protection outside the wall and the land occupation, the layout of the power distribution device of the entire site is treated with different slopes in combination with the actual terrain and sub-regions, which has significant economic benefits, and at the same time maintains the original appearance of the site to the greatest extent and protects the site. The environment can be better realized in harmony with the substation and nature. At the same time, the road perpendicular to the slope direction of the site is designed as an urban road at the high slope, and curbs are set; the road road is designed at the low slope, and the operation path perpendicular to the slope direction is also designed at the high slope. It is designed as an urban road with curbstones; the lower part of the slope is also designed as a highway road; this design adapts to changes in terrain, and at the same time helps rainwater to pass through the road smoothly along the direction of the slope.

Description of drawings

Fig. 1 is a schematic diagram of a slope-type vertical arrangement method according to an embodiment of the present invention;

Figure 2 is a schematic diagram of a road perpendicular to the slope direction of the site, designed as an urban road at the high slope, and a highway road at the low slope;

Fig. 3 is the embodiment shown in Fig. 1 and selects different lengths of the frame column to adapt to the change schematic diagram of the slope of the site;

Figure 4(a) is a schematic diagram of the platform design when the site slope is greater than 7% for the operation floor;

Figure 4(b) is a schematic diagram of the design of the slope type when the site slope is less than 7% for the operation floor.

Detailed ways

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

Referring to Figure 1, according to the general layout of the substation, combined with the natural terrain of a substation that is high in the middle and low around, the substation site is divided into three large areas. For the hillside, in the vertical design, slope treatment is carried out along the direction perpendicular to the busbar, and the two parts are designed to follow the natural slope to slopes facing east and west respectively. The main transformer site in the central area takes into account the convenience of installation and operation. , designed to be arranged on a flat slope. Through earthwork calculations and taking into account the natural balance of earth excavation and filling, the 110kV power distribution device area on the west side is designed as a 15.97% slope to the west along the natural terrain, and the 220kV power distribution device area on the east side is designed to follow the natural terrain to the east with a slope of 6.13% % slope, the main transformer site in the central area is a flat slope, and on the basis of the east-west slope, a slope of 5.0% to the north and south is designed at 36.0m to the south and north sides, respectively. By adopting the slope-type vertical layout method, it is more in line with the original topography, the amount of earthwork is greatly reduced, and the economic effect is very obvious.

The natural balance of excavation and filling of the site refers to the removal of the surface layer of cultivated soil, and the trimming of each power distribution device site into a certain slope according to the natural terrain, while ensuring the balance of excavation and filling in the site, without the need to purchase or discard external earth.

In order to solve the drainage problem of the site, all roads perpendicular to the slope direction of the site are designed as urban roads at the high slopes, and curbstones are laid; the low slopes are designed as highway roads. This design adapts to changes in terrain and is beneficial Rainwater can flow smoothly through the road along the direction of the slope (see Figure 2).

The operation path perpendicular to the direction of the slope is the same as that of the road perpendicular to the slope direction of the site in order not to block the discharge of rainwater and cause the site to accumulate water, so that rainwater can smoothly pass through the operation path along the direction of the slope.

The slope-type vertical layout method is adopted. In order to keep the 110kV and 220kV power distribution devices horizontal along the direction of the busbar, the tops of each frame column are on the same horizontal plane, and the requirements are met by selecting different lengths of frame columns to adapt to the change of the site slope (see Figure 3) , that is, the length of the frame column is selected to be shorter at the high slope and longer at the low slope, so that the top of the frame column is at the same level.

The site for the 110kV power distribution device has a large slope. In order to prevent the ground from being slippery in rainy and snowy days, the operating floor in this area is designed as a platform type. The site for the 220kV power distribution device has a small slope. The operating floor in this area is designed as a slope type ( See Figure 4(a), Figure 4(b)). the

Claims (3)

1. A slope type vertical arrangement method for 220kV substation, characterized in that, utilizing the natural topography of the hillside, the vertical design conforms to the natural topography, arranges various equipment and structures according to the situation on the mountain, and does not carry out large-scale earthwork leveling; Roads perpendicular to the slope direction of the site, operation trails and operation floors perpendicular to the slope direction; For the road perpendicular to the slope direction of the site, it is designed as an urban road at the high slope, and curbstones are set; it is designed as a highway road at the low slope; For the operation path perpendicular to the direction of the slope, it is also designed as an urban road with curbs at the high point of the slope; it is also designed as a highway road at the low point of the slope. 2. The slope-type vertical arrangement method of 220kV substation according to claim 1, characterized in that, in order to keep the 110kV and 220kV power distribution devices horizontal along the direction of the busbar, different lengths of the frame columns are selected to adapt to changes in site slopes. 3. The slope-type vertical layout method of 220kV substation according to claim 1, characterized in that, for the operation floor, when the slope slope of the site is greater than 7%, it is designed as a platform type; when the slope slope of the site is less than 7%, Designed as a slope type.