Integrated arrangement method for embedded shallow-buried cable trench of energy storage power station
By using clustered energy storage units and embedded integrated cable trench design, the problems of low land utilization, high construction costs, and inconvenient operation and maintenance of traditional energy storage power stations have been solved, achieving efficient land utilization and system operation.
Patent Information
- Application Number
- CN202511634248.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-10
- Publication Date
- 2026-02-10
AI Technical Summary
Traditional energy storage power stations with containerized energy storage units and cable trench design suffer from problems such as low land utilization, high cable trench construction costs, high cable losses, and poor operation and maintenance convenience.
The energy storage units are clustered into 2 to 4 units, and an integrated cable trench is embedded in the unit cluster. The integrated cable trench is adapted to the unit foundation to achieve the shortest cable path and simplify the connection of the main cable trench. The top plate of the integrated cable trench serves as a maintenance platform.
It significantly improved land utilization, reduced construction and operation costs, reduced cable loss, and improved maintenance convenience and system operation efficiency.
Smart Images
Figure CN121507871A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of energy storage power station technology, and in particular to an integrated layout method for embedded shallow buried cable trenches in energy storage power stations. Background Technology
[0002] With the large-scale grid connection of renewable energy sources such as photovoltaics and wind power, electrochemical energy storage power stations, as key facilities for smoothing energy output fluctuations and achieving peak and frequency regulation, are experiencing rapid expansion in construction scale. Currently, mainstream energy storage power stations generally adopt a design architecture of containerized energy storage units and traditional cable trenches, but this model has revealed many shortcomings that urgently need to be addressed in practical applications.
[0003] Firstly, energy storage units (mainly including battery compartments, PCS cabinets, and other equipment) are typically arranged in a row-and-column layout. To meet maintenance, operation, and fire safety requirements, a 3-5 meter spacing must be reserved between units. This space is primarily used for non-functional passageways and spacing, resulting in a land utilization rate of only 60-70% for the power station site. In areas where land resources are already scarce, such as the eastern coastal areas and surrounding industrial parks, this layout keeps land costs consistently high, severely restricting the economic viability and large-scale development of energy storage power stations.
[0004] The supporting cable trenches adopt a structure where the main trench runs through the entire site and connects with branch trenches to the units. The main cable trench needs to run through the entire energy storage power station area, often reaching hundreds of meters in length, with an excavation depth typically ranging from 1.2m to 1.5m. This project requires extensive earthwork excavation and the pouring of a large amount of reinforced concrete, while also necessitating strict waterproofing measures. The cost per kilometer of main cable trench exceeds 500,000 yuan. Furthermore, branch cable trenches connect the main trench to each energy storage unit. Each energy storage unit typically requires 1-2 branch trenches. The large number of these branch trenches and their frequent intersections with the energy storage unit foundations not only increase the complexity of on-site construction but also significantly enhance the potential risks associated with waterproofing.
[0005] Meanwhile, power cables (such as 35kV high-voltage cables) and communication cables within the power station, after being led out from the energy storage unit, need to detour to the main cable trench to complete the connection, resulting in the actual laying path of a single cable being 30% to 50% longer than the theoretically optimal path. This situation not only directly increases the procurement cost of cables (the cost of each kilometer of high-voltage cable exceeds 100,000 yuan), but also causes an increase in power transmission loss of 8% to 15%, thereby reducing the operating efficiency of the entire energy storage system.
[0006] Traditional cable trench covers are installed at high density, typically one cover every 10 meters, and the internal space is extremely crowded due to the overlapping laying of various types of cables. During later operation and maintenance, large areas of the covers need to be removed, which can easily interfere with the normal operation of adjacent energy storage units. Furthermore, in the event of a cable fault, the troubleshooting path is long, resulting in an average troubleshooting time exceeding 4 hours, seriously affecting the continuous and stable operation of the power station. Therefore, this invention proposes an integrated method for embedding shallow-buried cable trenches in energy storage power stations. Summary of the Invention
[0007] The purpose of this invention is to address the problems in the background technology where mainstream energy storage power station containerized energy storage units and traditional cable trench design modes have low land utilization, high cable trench construction costs, large cable losses, and poor operation and maintenance convenience, and to propose an integrated layout method for embedded shallow buried cable trenches in energy storage power stations.
[0008] The technical solution of this invention: A method for integrated layout of embedded shallow buried cable trenches in energy storage power stations, comprising the following steps: S1, Clustered arrangement of energy storage units: Based on the total number of energy storage units in the energy storage power station and site conditions, the multiple energy storage units are divided into multiple independent unit clusters. Each unit cluster contains 2 to 4 energy storage units. The non-functional space between units is reduced through the compact arrangement of clusters. S2, Integrated cable trench layout: An integrated cable trench is designed for each unit cluster. The integrated cable trench is adapted to the layout of the unit cluster and is arranged directly below the gap between the foundations of adjacent energy storage units within the unit cluster, without occupying additional site space. S3, Cable path layout within the cluster: The power cables and communication lines of all energy storage units within the cluster are arranged in layers within the integrated cable trench. Each energy storage unit is directly connected to the integrated cable trench below through a pre-buried pipe in the foundation, achieving the shortest cable path layout. At the same time, the top plate of the integrated cable trench serves as a maintenance platform within the unit cluster. S4, Inter-cluster main trunk trench layout: Simplified main trunk cable trenches are laid along the edge of the inter-cluster maintenance passage. The main trunk cable trenches connect the integrated cable trenches of each unit cluster and are finally connected to the step-up substation, completing the cable trench network layout of the entire power station.
[0009] Optionally, in step S1, a maintenance passage of 4m to 6m width is reserved between adjacent unit clusters.
[0010] Optionally, when there are two energy storage units in the same cluster, they share a common foundation, which is an integral reinforced concrete structure. When there are three or four energy storage units in the same cluster, they adopt closely adjacent foundations, and the net distance between the unit foundations is controlled between 0.8m and 1.2m.
[0011] Optionally, in step S2, the integrated cable trench does not occupy additional space separately, but is directly arranged below the narrow space between adjacent energy storage unit foundations within the same unit cluster.
[0012] Optionally, the shallow burial depth of the integrated cable trench is 0.6m to 0.8m, and the shallow burial width of the integrated cable trench is 0.5m to 0.7m.
[0013] Optionally, the integrated cable trench preferably adopts precast concrete components or cast-in-place reinforced concrete structures, and cable supports are provided on both sides, grounding flat steel is provided at the bottom, and water collection pits are provided at the corners.
[0014] Optionally, in step S3, the integrated cable trench is used to handle the power collection and communication line connection of all energy storage units in the unit cluster. The elevation of the top plate of the integrated cable trench is consistent with the elevation of the foundation ground of the surrounding energy storage units. The top plate is a heavy-duty anti-slip cover plate, which can serve as a maintenance platform within the unit cluster, replacing the traditional independent maintenance channel.
[0015] Optionally, each of the energy storage units can be directly connected to the integrated cable trench below via a pre-embedded pipe in the foundation, with a cable path length of only 1m to 2m.
[0016] Optionally, in step S4, the integrated cable of each unit cluster is connected through a simplified trunk cable trench and finally connected to the step-up substation. The trunk cable trench path is optimized based on the unit cluster distribution.
[0017] Optionally, the main cable trench reserves 2 to 3 spare cable channels. When the power station is expanded in the future, only the new unit clusters and their supporting integrated cable trenches need to be added and then connected to the existing main cable trench. There is no need to modify the original trench, and the disturbance to the existing system is small.
[0018] In summary, this application includes at least one of the following beneficial technical effects: This invention divides energy storage units into clusters of 2 to 4 units, while an integrated cable trench is embedded directly below the gap between the unit foundations without occupying extra space. Only necessary maintenance passages are reserved between the clusters, which significantly improves the land utilization rate of the power plant site. Especially in areas with scarce land resources such as the eastern coastal areas and around industrial parks, it can effectively reduce land costs and improve the economic efficiency of the project. Further, by using integrated cable trenches to reduce shallow burial depth and waterproofing costs, and by prioritizing the use of precast concrete components to shorten the construction cycle and reduce cable path length to lower cable procurement costs, the integrated cable trenches can lay cables in layers and use the top plate as a maintenance platform. The main cable trench path is optimized and shortened, which greatly improves the convenience of maintenance and shortens the fault diagnosis time. At the same time, the short-path transmission of cables reduces losses and effectively improves the operating efficiency of the entire energy storage system. In summary, this invention can improve site utilization, reduce construction and operation costs, and improve system operating efficiency, thus solving the core problems of traditional design patterns. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of an integrated layout method for embedded shallow buried cable trenches in an energy storage power station; Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 yes Figure 1 Enlarged diagram of point B in the middle.
[0020] Figure label: 1. Energy storage unit; 2. Integrated cable trench; 3. Main cable trench; 4. Water collection pit. Detailed Implementation
[0021] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0022] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.
[0023] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0024] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, 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 invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0026] Example
[0027] like Figure 1 As shown, the present invention proposes an integrated layout method for embedded shallow buried cable trenches in energy storage power stations, comprising the following steps: S1, Clustered Arrangement of Energy Storage Units 1: Based on the total number of energy storage units 1 in the energy storage power station and site conditions, multiple energy storage units 1 are divided into multiple independent unit clusters. Each unit cluster contains 2 to 4 energy storage units 1. The non-functional space between units is reduced through compact clustering. Multiple energy storage units 1 in the same unit cluster are preferably arranged in 2×2 or 1×3 to balance compactness with heat dissipation / fire protection requirements. For example, 16 energy storage units 1 can be divided into 6 clusters, of which 4 clusters contain 4 units and 2 clusters contain 2 units. A 4m to 6m wide maintenance passage is reserved between adjacent unit clusters to meet the needs of fire truck access and large equipment hoisting, and to avoid poor heat dissipation due to too many units in a single cluster. A simplified trunk cable trench can be laid under the passage, see step S4. When there are two energy storage units 1 within the same cluster, a shared foundation is used. The foundation is an integral reinforced concrete structure, and its size is adjusted according to the number of units. For example, two 20-foot container units share a foundation with dimensions of 12m × 3m. This shared foundation not only enhances the overall structural stability of the two energy storage units 1, but also reduces material waste and floor space occupied during foundation construction, further improving site utilization. When there are three or four energy storage units 1 within the same cluster, closely adjacent foundations are used. The net distance between unit foundations is controlled between 0.8m and 1.2m, which only meets the requirements of the width of the integrated cable trench 2, construction operation space, and heat dissipation. This reduces the spacing by 50% to 70% compared to traditional spacing. While ensuring the smooth deployment of the integrated cable trench 2 and the space for subsequent construction and maintenance, it maximizes the compression of ineffective intervals between units and significantly improves the spatial compactness of the cluster.
[0028] S2, please refer to Figure 2 and Figure 3Integrated cable trench layout: An integrated cable trench 2 is designed for each unit cluster. The integrated cable trench 2 is adapted to the layout of the unit cluster and is arranged directly below the gap between the foundations of adjacent energy storage units 1 within the unit cluster, without occupying additional site space. The integrated cable trench 2 does not occupy additional space, but is directly arranged directly below the narrow space between the foundations of adjacent energy storage units 1 within the same unit cluster. For example, in a 2×2 unit cluster, the cable trench is arranged in a "+" shape along the longitudinal and transverse foundation gaps, and in a 1×3 unit cluster, the cable trench is arranged in a straight line along the longitudinal foundation gaps. This adaptable layout ensures that the integrated cable trench 2 corresponds precisely to the position of each energy storage unit 1, creating favorable conditions for subsequent short-path cable access. The integrated cable trench 2 features a shallow burial depth of 0.6m to 0.8m, only 50% to 67% of the traditional main trench depth. This eliminates the need for excavation below the groundwater level, reducing waterproofing costs. The shallow burial design significantly reduces earthwork excavation and effectively avoids seepage risks in areas with high groundwater levels, lowering the difficulty and cost of waterproofing construction. The integrated cable trench 2 has a shallow burial width of 0.5m to 0.7m, adjusted according to the number of units within the cluster. A 0.5m width is used for two-unit clusters, and a 0.7m width for four-unit clusters. It only needs to accommodate the cables of all units within the cluster, including power and communication cables, typically no more than eight. This reasonable width design meets the laying requirements of various cables within the cluster while avoiding wasted trench space, further reducing the amount of concrete and other construction materials used. The integrated cable trench 2 prioritizes the use of precast concrete components, with factory prefabrication and on-site assembly shortening the construction cycle by 40%. Standardized factory production of precast components ensures higher quality control, and on-site assembly eliminates the need for prolonged curing, significantly improving construction efficiency and shortening the overall power station construction cycle. Alternatively, a cast-in-place reinforced concrete structure can be used, suitable for complex terrains, better adapting to sites with undulating terrain or special geological conditions, ensuring the structural integrity and load-bearing stability of the integrated cable trench 2. Cable supports with a layer height of 300mm are installed on both sides inside the integrated cable trench 2 for layered laying of power cables and communication cables. Layered arrangement effectively avoids signal interference between power cables and communication cables, while facilitating later inspection and maintenance of individual cables, improving the convenience of operation and maintenance. The bottom of the integrated cable trench 2 is equipped with grounding flat steel, 60×6mm galvanized flat steel, ensuring reliable grounding. The galvanized flat steel has excellent corrosion resistance and can maintain the conductivity of the grounding system for a long time, ensuring the electrical safety of the energy storage unit 1 and the cables. Water collection pits 4 are installed at the corners of the integrated cable trench 2, spaced 5m apart, with a diameter of 300mm, to prevent water accumulation and promptly drain rainwater or seepage from the trench, preventing damage to cables due to long-term immersion, extending cable life, and reducing the failure rate.
[0029] S3, Cable Layout within the Cluster: The integrated cable trench 2 houses the power cables and communication lines of all energy storage units 1 within the cluster, arranged in layers. Each energy storage unit 1 is directly connected to the integrated cable trench 2 below via pre-buried pipes in the foundation, achieving the shortest cable path. Simultaneously, the top plate of the integrated cable trench 2 serves as a maintenance platform within the cluster. The integrated cable trench 2 is used to collect power from all energy storage units 1 within the cluster. For example, the output cables of energy storage units 1 are aggregated into a single main cable within the trench. This power aggregation function significantly reduces the total length of cables within the cluster, lowering cable procurement costs and reducing power transmission losses, thus improving energy efficiency. The integrated cable trench 2 is also used to connect the communication lines of all energy storage units 1 within the cluster. For instance, BMS communication lines and monitoring signal lines are centrally laid within the trench. This centralized laying facilitates unified management and fault diagnosis of communication lines, ensuring the stability and timeliness of data transmission during the operation of energy storage units 1. The top elevation of the integrated cable trench 2 is consistent with the foundation elevation of the surrounding energy storage unit 1. The top plate is a heavy-duty anti-slip cover with a load-bearing capacity of ≥4kN / m², which can serve as a maintenance platform within the unit cluster, facilitating personnel movement and the placement of small tools. It replaces the traditional independent maintenance passage. The heavy-duty anti-slip cover can not only withstand the weight of maintenance personnel and tools, ensuring operational safety, but its function of replacing the traditional maintenance passage also further saves site space. Each energy storage unit 1 is directly connected to the integrated cable trench 2 below through a pre-embedded pipe in the foundation, such as a DN100 galvanized steel pipe embedded in the foundation sidewall. The cable path length is only 1m to 2m, which is 1 / 5 to 1 / 3 of the traditional path, achieving the shortest path access. This significantly reduces cable usage and transmission loss. The short path access design reduces cable procurement costs from the source, while also reducing resistance loss during current transmission and improving the overall operating efficiency of the energy storage system.
[0030] S4, Inter-cluster Main Cable Trench Layout: A simplified main cable trench 3 is laid along the edge of the inter-cluster maintenance passage. This main cable trench 3 connects to the integrated cable trenches 2 of each unit cluster and ultimately connects to the step-up substation, completing the cable trench network layout for the entire power station. The integrated cable trenches 2 of each unit cluster are connected by a simplified main cable trench 3 and ultimately connect to the step-up substation. The path of the main cable trench 3 is optimized based on the unit cluster distribution. For example, laying it along the edge of the inter-cluster maintenance passage shortens the path length by 30%–50% compared to traditional main trenches. The optimized path significantly reduces the construction length of the main trench, lowering civil engineering costs and construction time. The width is shortened by 0.8m–1.0m compared to traditional main trenches, only needing to accommodate the main cables from each cluster. The narrow width design adapts to the space of the inter-cluster passages while reducing concrete usage, further controlling construction costs. The depth is shortened by 0.7m–0.9m compared to traditional main trenches. The shallow depth design reduces the difficulty of earthwork excavation, reduces the area requiring waterproofing, and improves construction convenience. The main cable trench 3 is reserved with 2 to 3 spare cable channels. When the power station is expanded in the future, only the new unit cluster and its supporting integrated cable trench 2 need to be added and then connected to the existing main cable trench 3. There is no need to modify the original trench, which minimizes the disturbance to the existing system. The design of the spare channels provides flexible conditions for the later expansion of the power station, avoids the impact of expansion and modification on the normal operation of the existing system, and reduces the cost and risk of expansion.
[0031] In this embodiment, multiple energy storage units 1 are divided into independent unit clusters of 2 to 4 units each, using a compact 2×2 or 1×3 arrangement. This allows energy storage units 1 within the same cluster to achieve spatial aggregation through shared or closely adjacent foundations. The shared foundation for two units enhances structural stability, while the 0.8m to 1.2m foundation clearance for three / four units ensures sufficient space for heat dissipation and construction, while also reserving precise space for the installation of the integrated cable trench 2. This reduces the non-functional intervals of traditional row-and-column arrangements from the outset, improving site utilization. The 4m to 6m maintenance access between adjacent unit clusters meets fire protection and hoisting requirements and provides a reasonable route for the subsequent laying of the main cable trench 3.
[0032] The integrated cable trench 2's cross-shaped or straight-line layout precisely matches the unit cluster arrangement, requiring no additional space. A shallow burial depth of 0.6m to 0.8m avoids the impact of groundwater levels, reducing waterproofing costs; a width of 0.5m to 0.7m matches the number of cables within the cluster as needed, avoiding space waste. Cable supports on both sides of the trench allow for layered laying of power and communication cables, preventing signal interference. A 60×6mm galvanized grounding flat steel base ensures reliable grounding of the system, and 5m-spaced water collection pits 4 at the corners promptly drain accumulated water, protecting cable safety. The prefabricated or cast-in-place structural form balances construction efficiency and terrain adaptability, ensuring the integrated cable trench 2 stably functions as a cable laying carrier.
[0033] Each energy storage unit 1 is directly connected to the integrated cable trench 2 below via a DN100 galvanized steel pipe pre-embedded in the foundation sidewall. This extremely short path of 1m to 2m reduces cable usage by 60% to 80% compared to traditional methods. The integrated cable trench 2 centrally connects the power and communication lines of all energy storage units 1 within the cluster, reducing power transmission losses and facilitating unified cable management. Simultaneously, the top of the integrated cable trench 2 is flush with the foundation floor of the energy storage unit 1, and a heavy-duty anti-slip cover with a load-bearing capacity ≥4kN / m² serves directly as a maintenance platform within the cluster, replacing traditional independent maintenance channels and further optimizing space utilization.
[0034] The simplified main cable trench 3, laid along the edge of the maintenance passage between unit clusters, shortens the path length by 30% to 50% compared to the traditional method. Its width of 0.8m to 1.0m and depth of 0.7m to 0.9m are only suitable for the main cable requirements of each cluster, significantly reducing civil engineering costs. Its core function is to connect the integrated cable trenches 2 of each unit cluster in series, ultimately connecting them to the step-up substation to form a unified cable transmission network for the entire power station. The main cable trench 3 has 2 to 3 reserved spare cable channels, providing flexible interfaces for future power station expansion. New unit clusters only need to connect their corresponding integrated cable trenches 2 to the existing main trench, avoiding disturbance to the existing system and enabling scalable system operation.
[0035] The above specific embodiments are merely optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.
Claims
1. A method for integrated layout of embedded shallow buried cable trenches in energy storage power stations, characterized in that, Includes the following steps: S1, Clustered arrangement of energy storage units (1): Based on the total number of energy storage units (1) in the energy storage power station and the site conditions, the multiple energy storage units (1) are divided into multiple independent unit clusters. Each unit cluster contains 2 to 4 energy storage units (1). The non-functional space between units is reduced by the clustered compact arrangement. S2, Integrated trench layout: An integrated cable trench (2) is designed for each unit cluster. The integrated cable trench (2) is adapted to the layout of the unit cluster and is arranged directly below the foundation gap of the adjacent energy storage unit (1) in the unit cluster, without occupying additional site space. S3, Cable path arrangement within the cluster: The power cables and communication lines of all energy storage units (1) within the cluster are arranged in layers within the integrated cable trench (2). Each energy storage unit (1) is directly connected to the integrated cable trench (2) below through a pre-embedded pipe in the foundation to achieve the shortest cable path arrangement. At the same time, the top plate of the integrated cable trench (2) serves as a maintenance platform within the unit cluster. S4, Inter-cluster main trench layout: Simplified main cable trench (3) is laid along the edge of the inter-cluster maintenance channel. The main cable trench (3) connects the integrated cable trench (2) of each unit cluster and finally connects to the step-up substation to complete the cable trench network layout of the entire power station.
2. The integrated layout method for embedded shallow buried cable trenches in an energy storage power station according to claim 1, characterized in that, In step S1, a maintenance passage of 4m to 6m is reserved between adjacent unit clusters.
3. The integrated layout method for embedded shallow buried cable trenches in an energy storage power station according to claim 2, characterized in that, When there are two energy storage units (1) in the same unit cluster, they share a common foundation. The foundation is an integral reinforced concrete structure. When there are three or four energy storage units (1) in the same unit cluster, they adopt closely adjacent foundations. The net distance between the unit foundations is controlled between 0.8m and 1.2m.
4. The integrated layout method for embedded shallow buried cable trenches in an energy storage power station according to claim 1, characterized in that, In step S2, the integrated cable trench (2) does not occupy additional space separately, but is directly arranged below the narrow space between the foundations of adjacent energy storage units (1) in the same unit cluster.
5. The integrated layout method for embedded shallow buried cable trenches in an energy storage power station according to claim 4, characterized in that, The shallow burial depth of the integrated cable trench (2) is 0.6m to 0.8m, and the shallow burial width of the integrated cable trench (2) is 0.5m to 0.7m.
6. The integrated layout method for embedded shallow buried cable trenches in an energy storage power station according to claim 5, characterized in that, The integrated cable trench (2) preferably adopts precast concrete components or cast-in-place reinforced concrete structure. The integrated cable trench (2) is provided with cable supports on both sides, grounding flat steel at the bottom, and water collection pit (4) at the corner.
7. The integrated layout method for embedded shallow buried cable trenches in an energy storage power station according to claim 6, characterized in that, In step S3, the integrated cable trench (2) is used to carry out the power collection and communication line connection of all energy storage units (1) in the unit cluster. The elevation of the top plate of the integrated cable trench (2) is consistent with the elevation of the foundation ground of the surrounding energy storage units (1). The top plate is a heavy-duty anti-slip cover plate, which can be used as a maintenance platform in the unit cluster to replace the traditional independent maintenance channel.
8. The integrated layout method for embedded shallow buried cable trenches in an energy storage power station according to claim 7, characterized in that, Each of the energy storage units (1) is directly connected to the integrated cable trench (2) below through a pre-buried pipe in the foundation, with a cable path length of only 1m to 2m.
9. The integrated layout method for embedded shallow buried cable trenches in an energy storage power station according to claim 1, characterized in that, In step S4, the integrated cable trench (2) of each unit cluster is connected by a simplified trunk cable trench (3) and finally connected to the step-up transformer substation. The path of the trunk cable trench (3) is optimized based on the distribution of the unit cluster.
10. The integrated layout method for embedded shallow buried cable trenches in an energy storage power station according to claim 9, characterized in that, The main cable trench (3) is reserved for 2 to 3 spare cable channels. When the power station is expanded in the future, only the new unit cluster and its matching integrated cable trench (2) need to be added and then connected to the existing main cable trench (3). There is no need to modify the original trench, and the disturbance to the existing system is small.