A substation drainage system

Abstract

The application relates to the technical field of transformer substations, and discloses a transformer substation drainage system. The transformer substation drainage system comprises a full-permeable drainage well and a drainage pipeline. The full-permeable drainage well comprises a first permeable well wall, a first permeable well cover, a permeable column and a first drainage channel, a first drainage ditch is formed in the middle of the first permeable well wall; the first permeable well cover is installed on the top of the first permeable well wall; the permeable column is buried in soil, and the top end of the permeable column is connected to the bottom of the first drainage ditch; the first end of the first drainage channel is connected to the first permeable well wall and is communicated with the first drainage ditch, and the second end is communicated with the drainage pipeline. The application is beneficial to realize the seepage drainage of deep underground accumulated water in the transformer substation area, is beneficial to the stability and compactness of the foundation of the transformer substation area; meanwhile, the full-permeable drainage well can realize the seepage drainage of accumulated water in the transformer substation area, can prevent the loss of silt and soil, and can effectively reduce the ground collapse caused by the loss of accumulated water in the transformer substation area.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformer substations, in particular to a transformer substation drainage system. BACKGROUND

[0002] With the rapid development of economic construction, on the one hand, the demand for electricity is increasing year by year, forcing power grid enterprises to build more power supply facilities, so the number of transformer substation construction is increasing, on the other hand, power supply enterprises are also rapidly increasing, and more construction land needs to be provided. Because the power supply enterprises of various industries need to be built in a concentrated and contiguous manner, but the transformer substation can meet the construction needs as long as there is enough land area, therefore, the construction land position of the power system transformer substation is often the edge position of a ditch, a river, and a mountain, and the backfill earthwork of the construction site is relatively large, combined with the short construction period, after the transformer substation is put into operation, due to insufficient density, with the natural outflow of water, fine sand and soil are lost, and the phenomenon of internal cavity of the site occurs, and the settlement phenomenon occurs from time to time, which seriously threatens the safe operation of the power facilities in the transformer substation.

[0003] In the prior art, the backfill earthwork of the construction site forms a soft soil layer, when the soft soil layer is compacted, due to the large water content of the deep soft soil layer, the fluidity of the soft soil layer is relatively high, so the soft soil layer cannot be fully compacted, thereby causing poor stability of the foundation.

[0004] Therefore, there is an urgent need for a transformer substation drainage system to solve the above problems. SUMMARY

[0005] Based on the above, the purpose of the present application is to provide a transformer substation drainage system, which is beneficial to realize the infiltration drainage of deep underground water in the transformer substation area, and is beneficial to the stability and compaction of the foundation of the transformer substation area.

[0006] To achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0007] A transformer substation drainage system, comprising a full-permeable drainage well and a drainage pipeline, the full-permeable drainage well comprising:

[0008] a first permeable well wall, wherein a first drainage ditch is formed in the middle;

[0009] a first permeable well cover installed on the top of the first permeable well wall;

[0010] a permeable column buried in the soil, and the top end of the permeable column is connected to the bottom of the first drainage ditch;

[0011] a first drainage channel, the first end of which is connected to the first permeable well wall and communicated with the first drainage ditch, and the second end of which is communicated with the drainage pipeline.

[0012] As a preferred technical solution for a substation drainage system, the first end of the first drainage channel is higher than the bottom of the first drainage ditch;

[0013] The second end of the first drainage channel is not lower than the centerline of the drainage pipe.

[0014] As a preferred technical solution for a substation drainage system, the first end of the first drainage channel is higher than the second end of the first drainage channel.

[0015] As a preferred technical solution for a substation drainage system, it also includes a fully permeable drainage ditch, which comprises:

[0016] The second permeable well wall extends along the first direction, and a second drainage ditch is formed between the second permeable well walls. The bottom wall of the second drainage ditch is a non-permeable bottom wall.

[0017] Multiple second permeable well covers are sequentially installed on top of the second permeable well wall along the first direction;

[0018] The second drainage channel has one end connected to the second drainage ditch and the other end connected to the drainage pipe.

[0019] As a preferred technical solution for a substation drainage system, the second permeable well cover is provided with a positioning groove on the side facing the second permeable well wall, and the top of the second permeable well wall is embedded in the positioning groove.

[0020] As a preferred technical solution for a substation drainage system, a grate-type drainage well is also included, which is installed on one side of the fully permeable drainage ditch. The grate-type drainage well includes:

[0021] The well wall is impermeable, and a third drainage ditch is formed in the middle of the impermeable well wall;

[0022] A grate-type manhole cover is installed on top of the non-permeable well wall;

[0023] The third drainage channel has its first end connected to the third drainage ditch and its second end connected to the second drainage ditch.

[0024] As a preferred technical solution for a substation drainage system, the second permeable manhole cover is at the same height as the ground.

[0025] The grate-type manhole cover is lower than the second permeable manhole cover.

[0026] As a preferred technical solution for a substation drainage system, it also includes a manhole located above the drainage pipe, the manhole comprising:

[0027] The well wall is impermeable, and its bottom is connected to the drainage pipe;

[0028] A non-permeable well cover, which is detachably installed on top of the non-permeable well wall.

[0029] As a preferred technical solution for a substation drainage system, the fully permeable drainage ditch is installed through the road within the substation, and the fully permeable drainage ditch is perpendicular to the road within the substation.

[0030] As a preferred technical solution for a substation drainage system, water level monitoring sensors are installed in the fully permeable drainage well, the fully permeable drainage ditch, the grate drainage well, and the inspection well.

[0031] The beneficial effects of this invention are as follows:

[0032] This invention provides a substation drainage system. During backfilling, permeable piles are first buried in the deep soil layer. During the compaction of the soft soil layer, the deep soft soil layer is compressed, and water within the soft soil layer is discharged into the first drainage ditch through the permeable piles. This reduces the water content of the deep soft soil layer, allowing it to be fully compacted, improving foundation stability, and thus reducing settlement. In daily operation, excess water in the deep soil layer within the substation can still be discharged into the first drainage ditch through the permeable piles. Excess water in the shallow soil layer can infiltrate into the first drainage ditch through the walls of the first permeable wells. Water accumulated on the ground within the substation can infiltrate into the first drainage ditch through the first permeable well covers. Finally, water in the first drainage ditch is discharged to the outside of the substation through the first drainage channel and drainage pipes. This invention, by setting up a permeable pile structure, facilitates the infiltration and drainage of deep groundwater within the substation area, which is beneficial to the stability and compaction of the substation foundation and is particularly suitable for use in soft soil areas. At the same time, the use of fully permeable drainage wells can achieve the infiltration and drainage of water within the substation area, preventing the loss of silt and soil, and effectively reducing ground subsidence caused by water and soil erosion within the substation area. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0034] Figure 1 This is a structural schematic diagram of a fully permeable drainage well provided in a specific embodiment of the present invention;

[0035] Figure 2 This is a cross-sectional view of the fully permeable drainage ditch and inspection well provided in a specific embodiment of the present invention;

[0036] Figure 3 This is a cross-sectional view of the fully permeable drainage ditch and grate drainage well provided in a specific embodiment of the present invention;

[0037] Figure 4 This is one of the schematic diagrams of a substation drainage system provided in a specific embodiment of the present invention;

[0038] Figure 5 This is the second schematic diagram of a substation drainage system provided in a specific embodiment of the present invention.

[0039] The markings in the image are as follows:

[0040] 1. Fully permeable drainage well; 11. First permeable well wall; 12. First drainage ditch; 13. First permeable well cover; 14. Permeable column; 15. First drainage channel; 16. Supporting platform;

[0041] 2. Fully permeable drainage ditch; 21. Second permeable well wall; 22. Second permeable well cover; 221. Positioning groove; 23. Second drainage ditch; 24. Second drainage channel;

[0042] 3. Grate-type drainage well; 31. Impermeable well wall; 32. Third drainage ditch; 33. Grate-type manhole cover; 34. Third drainage channel;

[0043] 4. Inspection well; 41. Impermeable well wall; 42. Impermeable well cover;

[0044] 5. Drainage pipes; 6. Fence; 7. Permeable drainage wall; 8. Ground. Detailed Implementation

[0045] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0046] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0047] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0049] like Figure 1 As shown, this embodiment provides a substation drainage system, which includes a fully permeable drainage well 1 and a drainage pipe 5. Specifically, the fully permeable drainage well 1 includes a first permeable well wall 11, a first permeable well cover 13, a permeable column 14, and a first drainage channel 15. A first drainage ditch 12 is formed in the middle of the first permeable well wall 11; the first permeable well cover 13 is installed on the top of the first permeable well wall 11; the permeable column 14 is buried in the soil, and the top of the permeable column 14 is connected to the bottom of the first drainage ditch 12; the first end of the first drainage channel 15 is connected to the first permeable well wall 11 and communicates with the first drainage ditch 12, and the second end is connected to the drainage pipe 5.

[0050] During backfilling, permeable piles are first buried in the deep soil. During the compaction of the soft soil layer, the deep soft soil layer is compressed, and water within the soft soil layer is discharged into the first drainage ditch 12 through the permeable piles. This reduces the water content of the deep soft soil layer, allowing it to be fully compacted, improving foundation stability and reducing settlement. In daily operation, excess water in the deep soil within the substation can still be discharged into the first drainage ditch 12 through the permeable piles. Excess water in the shallow soil within the substation can infiltrate into the first drainage ditch 12 through the first permeable well wall 11. Water accumulated on the ground surface 8 within the substation can infiltrate into the first drainage ditch 12 through the first permeable well cover 13. Finally, water in the first drainage ditch 12 is discharged to the outside of the substation through the first drainage channel 15 and drainage pipe 5. This embodiment, by using permeable piles, facilitates the infiltration and drainage of deep groundwater within the substation area, promoting the stability and compaction of the substation foundation, and is particularly suitable for use in soft soil areas. Meanwhile, the use of fully permeable drainage wells can enable the infiltration and discharge of water accumulated in the substation area, prevent the loss of silt and soil, effectively reduce ground subsidence caused by water loss in the substation area, and help maintain the groundwater content in the substation area within a certain range.

[0051] In this embodiment, the first permeable well cover 13 is a circular permeable well cover made of permeable precast concrete. The first permeable well wall 11 is also made of permeable precast concrete. By pouring a support platform on top of the permeable pile, the first permeable well wall 11 is connected to the top of the support platform, thus achieving an effective connection between the first permeable well wall 11 and the permeable pile. The first drainage channel 15 is made of non-permeable precast concrete to prevent water in the first drainage pipe 5 from seeping into the soil. The first permeable well wall 11 and the drainage pipe 5 have pre-reserved interfaces, and both ends of the first drainage channel 15 are sealed to the interfaces with concrete.

[0052] To prevent debris from entering the drainage channel from the first drainage ditch 12, the first end of the first drainage channel 15 is higher than the bottom of the first drainage ditch 12; to prevent debris from entering the first drainage ditch 12 from the drainage pipe 5, the second end of the first drainage channel 15 is not lower than the centerline of the drainage pipe 5. More preferably, the first end of the first drainage channel 15 is higher than the second end of the first drainage channel 15. In this embodiment, the inclination angle of the first drainage channel 15 is 3°, which, on the one hand, further prevents debris from entering the first drainage ditch 12 from the drainage pipe 5; on the other hand, it increases the drainage speed of water accumulated in the first drainage channel 15.

[0053] Furthermore, such as Figure 2 and Figure 3As shown, the substation drainage system also includes a fully permeable drainage ditch 2. The fully permeable drainage ditch 2 includes a second permeable well wall 21, a second drainage channel 24, and multiple second permeable well covers 22. The second permeable well wall 21 extends along a first direction, forming a second drainage ditch 23 between the second permeable well walls 21. Multiple second permeable well covers 22 are sequentially installed on top of the second permeable well wall 21 along the first direction. One end of the second drainage channel 24 is connected to the second drainage ditch 23, and the other end is connected to the drainage pipe 5. When water accumulates in the substation area, the water can seep into the second drainage ditch 23 through the second permeable well covers 22, and excess water in the soil near the second permeable well wall 21 can also seep into the second drainage ditch 23 through the second permeable well wall 21. Finally, the water in the second drainage ditch 23 is discharged into the drainage pipe 5 through the second drainage channel 24. The bottom wall of the second drainage ditch 23 is impermeable to prevent the water in the second drainage ditch 23 from being discharged into the soil through the bottom wall of the second drainage ditch 23, thereby reducing the infiltration and discharge rate of the water in the second drainage ditch 23 and allowing the water in the second drainage ditch 23 to be discharged preferentially through the second drainage channel 24.

[0054] In this embodiment, the length of the second permeable well cover 22 is L, and the length of the second permeable well wall 21 is preferably N times L. The second permeable well cover 22 and the second permeable well wall 21 are used together to reduce the variety of sizes of the second permeable well cover 22. Both the second permeable well wall 21 and the second permeable well cover 22 are permeable precast concrete components. The bottom wall of the second drainage ditch 23 is a non-permeable precast concrete component.

[0055] Preferably, the second permeable well cover 22 has a positioning groove 221 on the side facing the second permeable well wall 21, and the top of the second permeable well wall 21 is embedded in the positioning groove 221. Firstly, during assembly, the second permeable well cover 22 is directly aligned with the top of the second permeable well wall 21, improving the ease of installation. Secondly, it facilitates the neat arrangement of multiple second permeable well covers 22, increasing aesthetics and preventing slippage. Thirdly, by embedding the top of the second permeable well wall 21 in the positioning groove 221, the second permeable well wall 21 and the second permeable well cover 22 are tightly fitted, preventing soil and water from flowing through the gap between the second permeable well wall 21 and the second permeable well cover 22 into the second drainage ditch 23, thus reducing soil erosion.

[0056] Preferably, such as Figure 5As shown, the fully permeable drainage ditch 2 runs through the road within the substation, and the fully permeable drainage ditch 2 is perpendicular to the road within the substation, that is, the first direction is perpendicular to the road within the substation. In this embodiment, there are multiple fully permeable drainage ditches 2, which divide the substation into several square areas. Ground inspection robots and personnel can walk on the second permeable manhole cover 22. Due to the permeability of the second permeable manhole cover 22, there is no water accumulation on the second permeable manhole cover 22 after rain or during rain, which is conducive to timely inspection work by inspection robots and personnel. Furthermore, the fully permeable drainage ditch 2 extending along the first direction increases the drainage range within the substation area and improves drainage efficiency.

[0057] More preferably, the second permeable well cover 22 is at the same height as the ground 8; this facilitates unobstructed patrols by the ground inspection robot within the substation, and avoids irregular bouncing caused by uneven paths, which could lead to navigation and positioning deviations and the risk of robot crashing. Therefore, this structure improves the positioning accuracy of the ground inspection robot.

[0058] Preferably, such as Figure 3 and Figure 4 As shown, the substation drainage system also includes a grate-type drainage well 3, which is located on one side of the fully permeable drainage ditch 2. The grate-type drainage well 3 includes a non-permeable well wall 41, a grate-type well cover 33, and a third drainage channel 34. A third drainage ditch 32 is formed in the middle of the non-permeable well wall 41; the grate-type well cover 33 is installed on top of the non-permeable well wall 41; the first end of the third drainage channel 34 is connected to the third drainage ditch 32, and the second end is connected to the second drainage ditch 23. When it rains, the water accumulation in the substation increases, and the rainwater is discharged through the perforations of the grate-type well cover 33, which increases the drainage speed of the rainwater. Furthermore, the second drainage ditch 23 is connected to the third drainage ditch 32 via the third drainage channel 34, and also to the drainage pipe 5 via the second drainage channel 24. Rainwater flowing into the grate drainage well 3 in the substation area is systematically discharged into the municipal drainage system outside the substation through the third drainage ditch 32, the third drainage channel 34, the second drainage ditch 23, the second drainage channel 24, and the drainage pipe 5. The combined application of the grate drainage well 3 and the fully permeable drainage ditch 2 effectively and quickly drains rainwater from the surface and the upper layer of soil in the substation site, reducing excessive infiltration of rainwater into the lower layers of the ground and effectively maintaining the balance of soil moisture content.

[0059] Preferably, the grate cover 33 is lower than the second permeable cover 22. When water accumulates in the substation area, it can be drained in an organized manner through the grate drainage well 3 to the municipal drainage system outside the substation in compliance with regulations, while preventing the water from rising above the upper surface of the second permeable cover 22, making it convenient for operation and maintenance personnel to walk on the upper surface of the fully permeable drainage ditch 2.

[0060] In this embodiment, the bottom wall of the third drainage ditch 32, the impermeable well wall 41, and the third drainage channel 34 are impermeable precast concrete components.

[0061] Furthermore, such as Figure 2 and Figure 4 As shown, the substation drainage system also includes a manhole 4, located above the drainage pipe 5. The manhole 4 includes a non-permeable well wall 41 and a non-permeable well cover 42. The bottom of the non-permeable well wall 41 is connected to the drainage pipe 5. The non-permeable well cover 42 is detachably installed on the top of the non-permeable well wall 41. When the substation drainage system malfunctions, operators can enter the manhole 4 to repair the substation drainage system. In this embodiment, the bottom of the non-permeable well wall 41 can be directly connected to the first drainage channel 15 or the second drainage channel 24.

[0062] In this embodiment, as Figure 5 As shown, the number and location of fully permeable drainage well 1, fully permeable drainage ditch 2, grate drainage well 3 and inspection well 4 can be adaptively designed according to the area of ​​the substation, forming an upper, middle and lower three-dimensional permeable drainage structure within the substation area, realizing an overall non-open flow organized permeable drainage.

[0063] It should be noted that the inspection well 4, the grate drainage well 3, the permeable precast concrete components, and the non-permeable precast concrete components are all existing mature technologies, and will not be elaborated on here.

[0064] In this embodiment, the substation is equipped with a perimeter wall 6. An underground infiltration drainage wall 7 is arranged on the outside of the substation perimeter wall 6 in the natural drainage direction of the substation. This facilitates the infiltration and discharge of excessive groundwater in the substation area to the outside, avoids soil erosion caused by open flow of water in the substation, and also keeps the groundwater in the substation area within a certain level. This prevents damage to the substation caused by the horizontal movement of groundwater or soft soil due to excessive or insufficient groundwater pressure on one side.

[0065] Preferably, water level monitoring sensors are installed in all permeable drainage wells 1, permeable drainage ditches 2, grate drainage wells 3, and inspection wells 4. The monitoring system determines the groundwater infiltration rate and the rate of water level rise and fall by monitoring the water levels in these permeable drainage wells 1, ditch 2, grate drainage wells 3, and inspection wells 4 at different locations within the substation area. Based on the changes in water level, dangerous areas can be further identified.

[0066] For example, if the monitoring system detects that the water level of the fully permeable drainage well 1 in a certain area is higher than the bottom height of the drainage pipe 5, and there has been rainfall in the substation area before or after this period, it is judged as a normal rainwater discharge process. If there has been no rainfall before or after this period, the first alarm signal is issued, indicating that the groundwater level in the substation area is high.

[0067] When the monitoring system detects that the water level of the fully permeable drainage well 1 in a certain area is lower than the bottom height of the drainage pipe 5, and there is no rainfall before or after this period, a second alarm signal is issued. The second alarm signal indicates that the groundwater level in the substation area is low.

[0068] When the monitoring system detects that the water level in the grate drainage well 3 in a certain area is higher than the water level in the fully permeable drainage ditch 2 directly connected to it, it determines that there is a blockage in the third drainage channel 34 connected to it and issues a third alarm signal. The third alarm signal is an abnormal alarm signal for the third drainage channel 34, prompting the operators to clean it in time.

[0069] When the monitoring system detects that the water level of the fully permeable drainage ditch 2 in a certain area is higher than the water level of the drainage pipe 5 directly connected to it, it determines that there is a blockage in the second drainage channel 24 connected to it and issues a fourth alarm signal. The fourth alarm signal is an abnormal alarm signal for the second drainage pipe 5, prompting the operators to clean it in time.

[0070] Based on the water level change curve of a fully permeable drainage well 1 in a certain area of ​​the substation, the monitoring system can plot the dynamic curve of water level change at that point on the monitoring host. When the water level at that point is higher than the set upper limit or lower limit, it can issue a fifth alarm signal. The fifth alarm signal is an alarm signal for abnormal water level change and an alarm signal for abnormal area or abnormal point.

[0071] It is worth noting that, based on the water level change curve of the fully permeable drainage well 1 at a certain location in the substation, the monitoring system can also plot the dynamic curve of water level change at that point on the monitoring host. At the same time, it can also plot the relationship curve between the water level at any point and the "temperature", "humidity", "rainfall" and "light intensity" collected in the substation area, and can display the correlation (positive correlation, negative correlation). If a negative correlation occurs, it will alert the operation and maintenance personnel.

[0072] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A substation drainage system, characterized in that, It includes a fully permeable drainage well (1) and a drainage pipe (5), wherein the fully permeable drainage well (1) includes: The first permeable well wall (11) forms a first drainage ditch (12) in the middle. The first permeable well wall (11) can allow excess water in the shallow soil of the substation to permeate into the first drainage ditch (12). The first permeable well cover (13) is installed on the top of the first permeable well wall (11). The first permeable well cover (13) can allow water accumulated on the ground (8) inside the substation to seep into the first drainage ditch (12). A permeable column (14) is buried in the soil, and the top of the permeable column (14) is connected to the bottom of the first drainage ditch (12). The permeable column (14) can drain excess water in the deep soil of the substation into the first drainage ditch (12). The first drainage channel (15) has its first end connected to the first permeable well wall (11) and connected to the first drainage ditch (12), and its second end connected to the drainage pipe (5). The first end of the first drainage channel (15) is higher than the bottom of the first drainage ditch (12); The second end of the first drainage channel (15) is not lower than the centerline of the drainage pipe (5); The first end of the first drainage channel (15) is higher than the second end of the first drainage channel (15). The water accumulated in the first drainage ditch (12) is discharged to the outside of the substation through the first drainage channel (15) and the drainage pipe (5).

2. The substation drainage system according to claim 1, characterized in that, It also includes a fully permeable drainage ditch (2), which comprises: The second permeable well wall (21) extends along the first direction, and a second drainage ditch (23) is formed between the second permeable well walls (21). The bottom wall of the second drainage ditch (23) is a non-permeable bottom wall. Multiple second permeable well covers (22) are sequentially installed on top of the second permeable well wall (21) along the first direction; The second drainage channel (24) is connected at one end to the second drainage ditch (23) and at the other end to the drainage pipe (5).

3. The substation drainage system according to claim 2, characterized in that, The second permeable well cover (22) is provided with a positioning groove (221) on the side facing the second permeable well wall (21), and the top of the second permeable well wall (21) is embedded in the positioning groove (221).

4. The substation drainage system according to claim 3, characterized in that, It also includes a grate-type drainage well (3), which is disposed on one side of the fully permeable drainage ditch (2), the grate-type drainage well (3) comprising: The impermeable well wall forms a third drainage ditch (32) in the middle of the impermeable well wall. A grate-type manhole cover (33) is installed on top of the impermeable manhole wall; The third drainage channel (34) has its first end connected to the third drainage ditch (32) and its second end connected to the second drainage ditch (23).

5. The substation drainage system according to claim 4, characterized in that, The second permeable well cover (22) is at the same height as the ground (8); The grate-type manhole cover (33) is lower than the second permeable manhole cover (22).

6. The substation drainage system according to claim 4, characterized in that, It also includes a manhole (4) located above the drainage pipe (5), the manhole (4) comprising: The bottom of the impermeable well wall is connected to the drainage pipe (5). A non-permeable well cover (42) is detachably installed on top of the non-permeable well wall.

7. The substation drainage system according to claim 3, characterized in that, The fully permeable drainage ditch (2) runs through the road inside the substation, and the fully permeable drainage ditch (2) is perpendicular to the road inside the substation.

8. The substation drainage system according to claim 6, characterized in that, Water level monitoring sensors are installed in the fully permeable drainage well (1), the fully permeable drainage ditch (2), the grate drainage well (3), and the inspection well (4).

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