An intelligent substation suitable for tunnel power supply and distribution

Abstract

The utility model relates to the technical field of transformer substations, and discloses an intelligent transformer substation suitable for power supply and distribution in tunnels, comprising a microstation body in a box structure, wherein the interior of the microstation body is divided into a high-voltage chamber, a transformer chamber and a low-voltage chamber by a steel plate; a high-voltage incoming line cabinet and an outgoing line cabinet are arranged in the high-voltage chamber; a dry-type transformer is placed in the transformer chamber; a pedestrian passage is formed in the middle of the low-voltage chamber, and low-voltage incoming line cabinets, a plurality of low-voltage outgoing line cabinets, a low-voltage capacitive reactor cabinet, an active filter cabinet, a dual power supply switching cabinet, a station integrated cabinet, a PLC cabinet, a UPS power supply, an EPS power supply, a plurality of battery cabinets, a UPS outgoing line cabinet and a plurality of EPS outgoing line cabinets are arranged on both sides of the pedestrian passage; the transformer substation can be transformed and manufactured by using a container, and the equipment of the high-voltage chamber, the transformer chamber and the low-voltage chamber all adopt a modular prefabricated solution, which changes the construction mode of the traditional transformer substation, so that the design, production, installation and commissioning of the transformer substation are all completed in the factory, thereby reducing the workload of on-site construction and commissioning; at the same time, the transformer substation centralizes the scattered equipment of the transformer substation in the highway tunnel, which is convenient for management and inspection.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer substations, in particular to an intelligent transformer substation suitable for power supply and distribution in tunnels. Background Art

[0002] At present, the substations of highway tunnels are scattered at the tunnel entrances and exits along the road and in the tunnels. At the same time, most of the highway tunnels are located in remote mountainous areas, far away from the city. Inspectors need to inspect the substations and then feed back the inspection data to the unified monitoring platform of the tunnel management station. Therefore, there are many problems such as high construction and maintenance costs of highway tunnel substations, great difficulty, inconvenience in inspection work, and high expenses. Utility Model Content

[0003] In order to solve the above problems, the utility model provides an intelligent substation device suitable for tunnel power supply and distribution, so as to meet the needs of modern tunnel power supply and distribution systems.

[0004] The technical solution adopted by the utility model is:

[0005] A smart substation for power supply and distribution in a tunnel comprises a microstation body in a box structure, wherein the interior of the microstation body is divided into a high-voltage chamber, a transformer chamber and a low-voltage chamber by steel plates, the left and right side end faces of the microstation body are respectively provided with a high-voltage chamber door panel and a low-voltage chamber door panel, the front and rear side end faces of the microstation body are respectively provided with a transformer chamber door panel and a plurality of control cabinet door panels, and a line-passing pipeline connected with the high-voltage chamber, the transformer chamber, the low-voltage chamber and the outside of the microstation body is provided at the bottom of the microstation body; a high-voltage incoming line cabinet and an outgoing line cabinet are provided in the high-voltage chamber; a dry-type transformer is placed in the transformer chamber; a pedestrian passage is formed in the middle of the low-voltage chamber, and low-voltage incoming line cabinets, a plurality of low-voltage outgoing line cabinets, a low-voltage capacitive reactance cabinet, an active filter cabinet, a dual power supply switching cabinet, a station integrated cabinet, a PLC cabinet, a UPS power supply, an EPS power supply, a plurality of battery cabinets, a UPS outgoing line cabinet and a plurality of EPS outgoing line cabinets are respectively arranged on both sides of the pedestrian passage; a network switch is installed in the station integrated cabinet.

[0006] Furthermore, the intelligent substation for tunnel power supply and distribution also includes a monitoring system, which includes a plurality of cameras installed on the upper part of the peripheral side of the microstation body, a camera installed in the low-voltage room, and a network hard disk recorder installed in the station integrated cabinet; the camera is connected to the UPS power supply and the network hard disk recorder by the connecting wire in the wire pipeline, the network hard disk recorder is connected to the network switch and the UPS power supply by the wire, and the network switch is connected to the UPS power supply by the wire.

[0007] Furthermore, the intelligent substation for tunnel power supply and distribution also includes an access control system, which includes an intelligent access control system installed on the high-voltage room door panel, the low-voltage room door panel, the transformer room door panel and the control cabinet door panel, and the intelligent access control system is wired to the network switch.

[0008] Furthermore, the intelligent substation suitable for tunnel power supply and distribution also includes a fire protection system, which includes fire extinguishing gas tanks arranged in the high-voltage room, transformer room and low-voltage room, differential temperature detectors and photoelectric smoke detectors installed on the tops of the high-voltage room, transformer room and low-voltage room, a fire extinguishing controller installed in the station integrated cabinet and connected to the control valve on the fire extinguishing gas tank by wire, and an edge computing terminal installed in the station integrated cabinet and connected to the photoelectric smoke detector, differential temperature detector and fire extinguishing controller by wire; the fire extinguishing controller is connected to the EPS power supply by wire, and the edge computing terminal is connected to the UPS power supply and the network switch by wire.

[0009] Furthermore, the fire protection system also includes a plurality of combustible gas detectors installed in the low-pressure room, and the combustible gas detectors are wired to the edge computing terminal and the EPS power supply.

[0010] Furthermore, the intelligent substation suitable for tunnel power supply and distribution also includes a temperature and humidity control system, which includes temperature and humidity sensors installed on a low-voltage incoming line cabinet, several low-voltage outgoing line cabinets, a low-voltage capacitive reactor cabinet, an active filter cabinet, a dual power switching cabinet, a UPS outgoing line cabinet and several EPS outgoing line cabinets, and an air conditioner installed in the low-voltage room. The temperature and humidity sensors and the air conditioner are both wired to an edge computing terminal installed in the station integrated cabinet, and the edge computing terminal is wired to the UPS power supply and the network switch.

[0011] Furthermore, an audible and visual alarm device is installed in the low-voltage room, and the audible and visual alarm device is connected to the network switch and the UPS power supply by wire.

[0012] Furthermore, threaded holes are provided at the four corners of the bottom of the micro station body, and lifting ears are detachably installed through the threaded holes.

[0013] The beneficial effects of the utility model are:

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The microstation body suitable for tunnel power supply and distribution intelligent substation can be modified and manufactured using containers. The equipment in the high-voltage room, transformer room and low-voltage room all adopt modular prefabricated solutions, which changes the construction mode of traditional substations and enables the design, production, installation and commissioning of substations to be completed in the factory, thereby reducing the workload of on-site construction and commissioning and shortening the construction period of substations. At the same time, the tunnel power supply and distribution intelligent substation microstation centralizes the scattered equipment of substations in highway tunnels for easy management and inspection.

[0016] 2. The tunnel power supply and distribution intelligent substation device is equipped with a monitoring system, an access control system, a fire protection system and a temperature and humidity control system. The monitoring system and the access control system can ensure the safety of the substation and prevent patrol personnel from entering the substation and accidentally touching the equipment in the substation. The temperature control system can ensure the operating environment of the equipment in the substation. The fire protection system can handle emergencies and avoid sudden accidents such as fire.

[0017] 3. The tunnel power supply and distribution intelligent substation is equipped with a network switch, which can connect the incoming and outgoing line cabinets, capacitor cabinets, filter cabinets, transformers and other equipment to the network switch according to usage requirements, and transmit information such as voltage, current, power and fault status through the network to the unified monitoring platform of the tunnel management station.

[0018] 4. The tunnel power supply and distribution intelligent substation device is equipped with UPS power supply and EPS power supply, which can ensure the continuity and stability of power supply, thereby ensuring stable power supply for the monitoring system, access control system, fire protection system and temperature and humidity control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model substation;

[0020] Figure 2 This is a schematic diagram of the end structure of the substation of the utility model;

[0021] Figure 3 This is the internal structure layout diagram of the utility model substation;

[0022] Figure 4 It is a structural schematic diagram of the station-used integrated cabinet of the utility model substation;

[0023] Figure 5 This is a layout diagram of the fire protection system of the utility model substation;

[0024] Figure 1—5, 1—microstation body, 2—high voltage room, 3—transformer room, 4—low voltage room, 5—high voltage room door panel, 6—low voltage room door panel, 7—transformer room door panel, 8—control cabinet door panel, 9—high voltage incoming line cabinet, 10—high voltage outgoing line cabinet, 11—dry-type transformer, 12—pedestrian passage, 13—low voltage incoming line cabinet, 14—low voltage outgoing line cabinet, 15—low voltage capacitor cabinet, 16—active filter cabinet, 17—dual power switching cabinet, 18—station integrated cabinet, 19—PLC cabinet, 20—UPS cabinet Source, 21—EPS power supply, 22—battery cabinet, 23—UPS outlet cabinet, 24—EPS outlet cabinet, 25—network switch, 26—camera, 27—network hard disk recorder, 28—intelligent access control, 29—fire extinguishing gas tank, 30—differential temperature detector, 31—photoelectric smoke detector, 32—fire extinguishing controller, 33—edge computing terminal, 34—combustible gas detector, 35—temperature and humidity sensor, 36—air conditioning, 37—sound and light alarm device, 38—hanging ear. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings of the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] For ease of description, spatially relative terms such as "upper," "lower," "left," and "right" may be used herein to describe the relationship of one element or feature shown in a figure to another element or feature. It should be understood that, in addition to the orientation shown in the processing figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, elements described as being "below" other elements or features will be defined as being "above" the other elements or features. Therefore, the exemplary term "below" can include both upper and lower orientations. The device can be positioned in other ways, and the spatially relative descriptions used herein can be interpreted accordingly.

[0027] This embodiment provides an intelligent substation for power supply and distribution in tunnels, such as Figure 1 and Figure 2 As shown, the intelligent substation for tunnel power supply and distribution includes a microstation body 1 in a box structure, and the microstation body 1 is transformed by using a commercially available container. Figure 3As shown, the interior of the microstation body 1 is divided into a high-pressure chamber 2, a transformer chamber 3 and a low-pressure chamber 4 by a steel plate. The high-pressure chamber 2, the transformer chamber 3 and the low-pressure chamber 4 are arranged in sequence from left to right, and the internal space of the low-pressure chamber 4 is larger than that of the transformer chamber 3, and the internal space of the transformer chamber 3 is larger than that of the high-pressure chamber 2. Among them, the high-voltage room 2 can be used to place a 10KV high-voltage incoming line cabinet 9 and a 10KV high-voltage outgoing line cabinet 10; the transformer room 3 can be used to place a SCBH15-1000KVA amorphous alloy dry-type transformer 11; a pedestrian passage 12 is formed in the middle of the low-voltage room 4, and on both sides of the pedestrian passage 12 are placed a 0.4KV low-voltage incoming line cabinet 13, a 0.4KV low-voltage capacitor cabinet 15, an active filter cabinet 16, six groups of 0.4KV low-voltage outgoing line cabinets 14, an MNS dual power switching cabinet 17, a station integrated cabinet 18, a Berkeley box-type substation PLC cabinet 19, a KSHIDA 380 / 380V UPS power supply 20, seven groups of A32 battery cabinets 22, a KSHIDA 380 / 380V EPS power supply 21, a KSHIDA UPS outgoing line cabinet 23 and two groups of EPS outgoing line cabinets 24. Figure 4 As shown, the station integrated cabinet 18 adopts a self-made cabinet, in which Zhejiang Dahua DH-KYR4432-4XS2 / T network hard disk recorder 27, H3C LS-5560-30C-EI network switch 25 and edge computing terminal 33 are installed. The edge computing terminal 33 is an industrial computer with a software system installed (software name: multi-functional substation intelligent integrated management platform under the front-end management system, software number: 2023SR1528140). 10KV high-voltage incoming line cabinet 9, 10KV high-voltage outgoing line cabinet 10, 0.4KV low-voltage incoming line cabinet, 0.4KV low-voltage capacitor cabinet 15, active filter cabinet 16 and 0.4KV low-voltage outgoing line cabinet 14 are existing equipment of traditional tunnel substations.

[0028] Considering the wiring problem, when the container is modified, a line pipeline connected to the high-voltage chamber 2, the transformer chamber 3, the low-voltage chamber 4 and the outside of the micro-station body 1 is installed at the bottom of the micro-station body 1. The line pipeline is not shown in the figure. The high-voltage transmission line and the low-voltage transmission line are introduced into the micro-station body 1 through the line pipeline, and the various equipment connections of the high-voltage chamber 2, the transformer chamber 3 and the low-voltage chamber 4 are also met through the line pipeline. In addition, for the convenience of inspection, when the container is modified, the left and right side end faces of the micro-station body 1 are respectively provided with a high-voltage chamber door panel 5 and a low-voltage chamber door panel 6, and the front and rear side end faces of the micro-station body 1 are respectively provided with a transformer chamber door panel 7 and several control cabinet door panels 8. All door panels are double-leaf door panels, and the door panels are rotatably installed on the micro-station body 1 through hinges or hinges.

[0029] The micro-station body 1, high-voltage chamber 2, transformer chamber 3 and low-voltage chamber 4 of the tunnel power supply and distribution intelligent substation are all manufactured, installed and debugged in the factory. After the micro-station body 1 is transported to the site, it only needs to be wired and debugged according to actual use needs, thereby shortening the construction period of the substation and centralizing the scattered equipment of the substation in the highway tunnel for easy management and inspection. Considering the transportation problem of the micro-station body 1, Figure 1 As shown, in this embodiment, threaded holes are provided at the four corners of the bottom of the micro-station body 1, through which the lifting lugs 38 can be detachably installed, and the lifting lugs 38 facilitate the overall lifting of the micro-station body 1. In addition, a network switch 25 is installed in the integrated cabinet 18 for the station, and the various inlet and outlet cabinets, capacitor cabinets, filter cabinets, transformers and other equipment can be connected to the network switch 25 according to the use requirements, and the information such as voltage, current, power and fault status can be transmitted to the unified monitoring platform of the tunnel management station through the network.

[0030] Furthermore, the intelligent substation for tunnel power supply and distribution also includes a monitoring system and an access control system, such as Figure 1 , Figure 2 and Figure 3 As shown, the monitoring system includes several Dahua 4 million dual-light alarm fixed-focus gun-type network cameras 26 installed on the upper side of the micro-station body 1 and in the low-voltage room 4, and a network hard disk video recorder 27 installed in the station integrated cabinet 18; the camera 26 is wiredly connected to the UPS power supply 20 and the network hard disk video recorder 27 through the connecting wire in the wire pipeline, the network hard disk video recorder 27 is wired to the network switch 25 and the UPS power supply 20, and the network switch 25 is wired to the UPS power supply 20; the network switch 25, the network hard disk video recorder 27 and the camera 26 are uninterruptedly powered by the UPS power supply 20, the monitoring video of the camera 26 is stored in the network hard disk video recorder 27, and the network hard disk video recorder 27 establishes a network connection with the unified monitoring platform of the tunnel management station through the network switch 25, so as to realize remote retrieval of the monitoring video.

[0031] like Figure 1 and Figure 2As shown, the access control system includes Dahua's intelligent access control 28 installed on the high-voltage room door panel 5, the low-voltage room door panel 6, the transformer room door panel 7 and the control cabinet door panel 8; the intelligent access control 28 is wired to the network switch 25, and the opening and closing signals of the high-voltage room door panel 5, the low-voltage room door panel 6, the transformer room door panel 7 and the control cabinet door panel 8 are transmitted to the unified monitoring platform of the tunnel management station in real time to ensure the safety of the substation and prevent non-inspection personnel from entering the substation and accidentally touching the equipment in the substation. In addition, an audible and visual alarm device 37 is also installed in the low-voltage room 4, and the audible and visual alarm device 37 is wired to the network switch 25 and the UPS power supply 20; when a non-inspection personnel enters the substation, the unified monitoring platform of the tunnel management station can issue a start command to the audible and visual alarm device 37 through the network switch 25, so that it performs an audible and visual alarm.

[0032] Furthermore, the intelligent substation for tunnel power supply and distribution also includes a fire protection system, such as Figure 3 and Figure 5 As shown, the fire protection system includes a Kedalian non-pressurized perfluorohexanone fire extinguishing gas tank 29 arranged in the high-pressure chamber 2, the transformer chamber 3 and the low-pressure chamber 4, a Kedalian differential temperature detector 30 and a Kedalian photoelectric smoke detector 31 installed on the top of the high-pressure chamber 2, the transformer chamber 3 and the low-pressure chamber 4, a Kedalian fire extinguishing controller 32 installed in the station integrated cabinet 18 and connected to the control valve on the fire extinguishing gas tank 29 by wire, and an edge computing terminal 33 installed in the station integrated cabinet 18 and connected to the photoelectric smoke detector 31, the differential temperature detector 30 and the fire extinguishing controller 32 by wire; the fire extinguishing controller 32 is connected to the EPS power supply 21 by wire, and the edge computing terminal 33 is connected to the UPS power supply 20 and the network switch 25 by wire.

[0033] When a fire occurs in the high-pressure chamber 2, transformer chamber 3 or low-pressure chamber 4, the differential temperature detector 30 and the photoelectric smoke detector 31 simultaneously transmit warning signals to the edge computing terminal 33, and the edge computing terminal 33 issues a start command to the fire extinguishing controller 32, and the fire extinguishing controller 32 controls the fire extinguishing gas tank 29 in the corresponding room to open. After the fire extinguishing gas tank 29 is opened, the perfluorohexanone fire extinguishing gas stored inside it is ejected; because the high-pressure chamber 2, transformer chamber 3 or low-pressure chamber 4 are relatively sealed, the perfluorohexanone fire extinguishing gas fills the room and can achieve a fire extinguishing effect. When a fire occurs, while the edge computing terminal 33 issues a start command to the fire extinguishing controller 32, it can also send a fire signal to the unified monitoring platform of the tunnel management station through the network switch 25, so that the patrol personnel can be notified of the fire and take emergency measures at the first time.

[0034] In order to ensure the safety and stability of the fire protection system, the UPS power supply 20 is not used in this embodiment, but a separate EPS power supply 21 is used to power it. In addition, in order to provide early warning before a fire occurs, such as Figure 5As shown, in this embodiment, two DX-218 combustible gas detectors 34 are also installed in the low-pressure chamber 4, and the combustible gas detectors 34 are wired to the edge computing terminal 33 and the EPS power supply 21; when the concentration of combustible gas in the low-pressure chamber 4 is too high, the combustible gas detector 34 transmits a warning signal to the edge computing terminal 33, and the edge computing terminal 33 then sends a warning signal to the unified monitoring platform of the tunnel management station through the network switch 25, and the patrol personnel rush to the scene to inspect the substation to avoid the occurrence of fire.

[0035] Furthermore, the intelligent substation for tunnel power supply and distribution also includes a temperature and humidity control system, such as Figure 3 As shown, the temperature and humidity control system includes a temperature and humidity sensor 35 installed on a low-voltage incoming line cabinet 13, a plurality of low-voltage outgoing line cabinets 14, a low-voltage capacitor and reactor cabinet, an active filter cabinet 16, a dual power switching cabinet 17, a UPS outgoing line cabinet 23 and a plurality of EPS outgoing line cabinets 24, and an air conditioner 36 installed in the low-voltage room 4. The temperature and humidity sensor 35 and the air conditioner 36 are both wiredly connected to the edge computing terminal 33 installed in the station integrated cabinet 18, and the edge computing terminal 33 is wiredly connected to the UPS power supply 20 and the network switch 25. Since there are many cabinets in the low-voltage room 4, the heat generated when multiple cabinets work at the same time is relatively large. In order to ensure the stability of its working environment, the temperature and humidity sensor 35 is used to detect the temperature and humidity of each cabinet, and the edge computing terminal 33 is used to issue a start and stop command to the air conditioner 36, thereby ensuring the stability of the working environment; at the same time, the temperature and humidity data of each cabinet detected by the temperature and humidity sensor 35 can be transmitted to the unified monitoring platform of the tunnel management station through the edge computing terminal 33 and the network switch 25 in real time, so that the backstage personnel can understand the equipment operation status in real time.

[0036] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An intelligent substation for power supply and distribution in tunnels, characterized by: It includes a micro-station body in a box structure, the interior of the micro-station body is divided into a high-voltage chamber, a transformer chamber and a low-voltage chamber by a steel plate, the left and right side end faces of the micro-station body are respectively provided with a high-voltage chamber door plate and a low-voltage chamber door plate, the front and rear side end faces of the micro-station body are respectively provided with a transformer chamber door plate and a plurality of control cabinet door plates, and the bottom of the micro-station body is provided with a line pipeline connected with the high-voltage chamber, the transformer chamber, the low-voltage chamber and the outside of the micro-station body; The high-voltage room is provided with a high-voltage incoming line cabinet and an outgoing line cabinet; a dry-type transformer is placed in the transformer room; a pedestrian passage is formed in the middle of the low-voltage room, and a low-voltage incoming line cabinet, several low-voltage outgoing line cabinets, a low-voltage capacitor and reactor cabinet, an active filter cabinet, a dual power switching cabinet, a station integrated cabinet, a PLC cabinet, a UPS power supply, an EPS power supply, several battery cabinets, a UPS outgoing line cabinet and several EPS outgoing line cabinets are arranged on both sides of the pedestrian passage; a network switch is installed in the station integrated cabinet.

2. The intelligent substation for tunnel power supply and distribution according to claim 1 is characterized in that: The intelligent substation for tunnel power supply and distribution also includes a monitoring system, which includes a plurality of cameras installed on the upper part of the peripheral side of the microstation body, a camera installed in the low-voltage room, and a network hard disk recorder installed in the station integrated cabinet; the camera is connected to the UPS power supply and the network hard disk recorder by wire through the connecting wire in the wire pipeline, the network hard disk recorder is connected to the network switch and the UPS power supply by wire, and the network switch is connected to the UPS power supply by wire.

3. The intelligent substation for tunnel power supply and distribution according to claim 1 is characterized in that: The intelligent substation for tunnel power supply and distribution also includes an access control system, which includes an intelligent access control system installed on the high-voltage room door panel, the low-voltage room door panel, the transformer room door panel and the control cabinet door panel, and the intelligent access control system is wired to the network switch.

4. The intelligent substation for tunnel power supply and distribution according to claim 1 is characterized in that: The intelligent substation for tunnel power supply and distribution also includes a fire protection system, which includes fire extinguishing gas tanks arranged in the high-voltage room, transformer room and low-voltage room, differential temperature detectors and photoelectric smoke detectors installed on the tops of the high-voltage room, transformer room and low-voltage room, a fire extinguishing controller installed in the station integrated cabinet and connected to the control valve on the fire extinguishing gas tank by wire, and an edge computing terminal installed in the station integrated cabinet and connected to the photoelectric smoke detector, differential temperature detector and fire extinguishing controller by wire; the fire extinguishing controller is connected to the EPS power supply by wire, and the edge computing terminal is connected to the UPS power supply and the network switch by wire.

5. The intelligent substation for tunnel power supply and distribution according to claim 4 is characterized in that: The fire protection system also includes a plurality of combustible gas detectors installed in the low-pressure room, and the combustible gas detectors are wired to the edge computing terminal and the EPS power supply.

6. The intelligent substation for tunnel power supply and distribution according to claim 1 is characterized in that: The intelligent substation for tunnel power supply and distribution also includes a temperature and humidity control system, which includes temperature and humidity sensors installed on a low-voltage incoming line cabinet, several low-voltage outgoing line cabinets, a low-voltage capacitive reactance cabinet, an active filter cabinet, a dual power switching cabinet, a UPS outgoing line cabinet and several EPS outgoing line cabinets, and an air conditioner installed in the low-voltage room. The temperature and humidity sensors and the air conditioner are both wired to the edge computing terminal installed in the station integrated cabinet, and the edge computing terminal is wired to the UPS power supply and the network switch.

7. The intelligent substation for tunnel power supply and distribution according to claim 1 is characterized in that: The low-voltage room is also equipped with an audible and visual alarm device, which is wiredly connected to the network switch and the UPS power supply.

8. The intelligent substation for tunnel power supply and distribution according to claim 1 is characterized in that: Threaded holes are arranged at the four corners of the bottom of the micro station body, and lifting ears are detachably mounted through the threaded holes.

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