An unattended substation safety protection device

Abstract

The application provides an unattended substation safety protection device, belonging to the technical field of substations, comprising a fence, four first mounting pieces, a plurality of first detectors, four second mounting pieces and a plurality of second detectors; an annular channel is formed between the fence and the substation, and the annular channel has a first long strip space and a second long strip space, the first mounting pieces are located in the first long strip space and the second long strip space, and the first mounting pieces have two mounting portions; the first detectors are mounted on the first mounting pieces and are respectively arranged on the two mounting portions; the plurality of first detectors form a horizontal detection area; the second mounting pieces are arranged at four corners of the fence, the second detectors are mounted on the second mounting pieces, and the four detectors form an annular detection area. The unattended substation safety protection device provided by the application realizes active sensing and real-time monitoring of intrusion behavior by means of the double protection of the horizontal detection area and the annular detection area, and improves the protection performance of the substation.

Description

Technical Field

[0001] This application belongs to the field of substation technology, and more specifically, relates to a safety protection device for unattended substations. Background Technology

[0002] In power systems, substations serve as core hubs for power conversion, distribution, and control. Their operational safety directly impacts the stable power supply of the regional power grid and the normal order of social production and daily life. To prevent damage to substation equipment and personnel from security risks such as illegal intrusion and accidental entry, physical isolation and protection have become a fundamental component of the substation safety assurance system. Currently, the industry commonly uses fencing around the substation perimeter to achieve basic isolation. Common fencing types include traditional structures such as metal fences, mesh fences, and concrete walls.

[0003] Traditional fencing solutions primarily rely on physical barriers to create spatial isolation, focusing on basic isolation functions. However, their practical applications reveal significant technical shortcomings. In terms of protective performance, traditional fences generally suffer from weak resistance to vandalism. For example, metal fences are easily sheared and climbed over, and concrete walls have climbing points and limited impact resistance, making them ineffective against deliberate vandalism or illegal intrusion. Furthermore, traditional fences lack active monitoring capabilities, offering only passive isolation and failing to provide real-time detection and early warning of intrusion attempts, relying entirely on manual patrols for security monitoring. Utility Model Content

[0004] The purpose of this application is to provide a safety protection device for unattended substations to solve the technical problem of poor substation protection performance in the prior art.

[0005] To achieve the above objectives, the technical solution adopted in this application is: to provide a safety protection device for an unattended substation, comprising: The enclosure is arranged in a ring and surrounds the substation; the enclosure and the substation form a ring passage, and the ring passage has a first long strip space arranged in parallel and two second long strip spaces arranged in parallel and perpendicular to each other; The first mounting component, numbered four, is located in two of the first elongated spaces and two of the second elongated spaces respectively; the first mounting component has two mounting portions located on the upper sides of both ends of the first elongated space and on the upper side of the second elongated space respectively; Multiple first detectors are mounted on the first mounting component; the receiving end and transmitting end of the first detector are respectively placed on two mounting portions on the first mounting component; the multiple first detectors form a horizontal detection area located on the upper side of the annular channel; The second mounting component, numbering four, is arranged in a rectangular shape in the annular channel and is respectively located at the four corners of the enclosure; Multiple second detectors are installed on four second mounting components; the four detectors form a ring-shaped detection area surrounding the substation.

[0006] In one possible implementation, the first mounting component includes a column and a mounting plate mounted on the upper end of the column, the mounting plate being the mounting part; the mounting plate is provided with a plurality of receiving ends or transmitting ends of the first detectors arranged at intervals, the plurality of first detectors being arranged along the width direction of the first elongated space or the second elongated space.

[0007] In one possible implementation, the first mounting member is arranged close to the frame, and two adjacent mounting plates are arranged vertically.

[0008] In one possible implementation, the height of the plurality of the first detectors is below the top of the transformer or level with the top of the transformer.

[0009] In one possible implementation, the second mounting component is arranged vertically, and each second mounting component is provided with a plurality of second detectors arranged vertically at intervals, forming a plurality of annular detection areas arranged vertically at intervals.

[0010] In one possible implementation, the system further includes a support frame located within the enclosure and a photovoltaic module mounted on the support frame, the photovoltaic module being positioned above the enclosure; the photovoltaic module is connected to the first detector and the second detector.

[0011] In one possible implementation, a camera is also included, the height of which is greater than the height of the first detector and the substation, the camera being positioned close to the enclosure and facing the substation.

[0012] In one possible implementation, the enclosure has four circularly arranged retaining walls, each retaining wall comprising a base and a rectangular frame mounted on the base, the rectangular frame having partitions and a plurality of parallel, spaced-apart vertical bars located above the partitions.

[0013] In one possible implementation, each of the vertical poles is provided with a rotatably connected shield on the side closest to the substation, and the rectangular frame is also provided with a drive mechanism for driving the multiple shields to rotate.

[0014] In one possible implementation, a fixed plate is provided on the side of the vertical pole near the substation, and a rotating shaft is provided on the shielding plate and rotatably connected to the fixed plate; the driving mechanism includes a drive motor, a transmission shaft, multiple driving wheels and multiple driven wheels, the driven wheels are mounted on the corresponding rotating shafts, the transmission shaft is rotatably connected to multiple fixed plates, multiple driving wheels are all mounted on the transmission shaft, and the driving wheels are meshed with the corresponding driven wheels, and the drive motor is connected to the transmission shaft.

[0015] The beneficial effects of the unattended substation safety protection device provided in this application are as follows: Compared with the prior art, the unattended substation safety protection device of this application, during operation, firstly fixes the ring-shaped fence according to the actual area of ​​the substation, and clarifies the specific positions of the first and second long strip spaces to delineate the boundary of the ring channel; then, installs the four first mounting parts to the corresponding long strip spaces, adjusts the angle of the mounting parts and fixes the first detector, calibrates the alignment accuracy of the transmitting and receiving ends to ensure that there are no blind spots in the horizontal detection area; next, second mounting parts are positioned and installed at the four corners of the fence, the second detectors are assembled and the equipment parameters are adjusted so that the ring detection area and the horizontal detection area are arranged vertically; finally, the entire device is started, and the system self-test is completed through the signal transmission and feedback mechanism of the detectors. After confirming that the equipment is operating normally, it can be put into unattended monitoring. The beneficial effects of this solution are significant. Compared with traditional fences, it solves the drawbacks of passive isolation of traditional fences through the dual protection of the horizontal detection area and the ring detection area, realizing active perception and real-time monitoring of intrusion behavior, and effectively avoiding the monitoring blind spots and reaction delays of manual patrols; the structured design of the ring channel and the precise layout of the detectors ensure the comprehensiveness of the protection range. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the safety protection device for unattended substations provided in the embodiments of this application; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 A schematic diagram of the horizontal detection area provided in the embodiments of this application; Figure 4 A side view of the annular detection area provided in an embodiment of this application; Figure 5This is a schematic diagram of the structure of the retaining wall provided in an embodiment of this application; Figure 6 A schematic diagram illustrating the connection between the vertical rod and the baffle plate provided in an embodiment of this application; Figure 7 This is a schematic diagram of the drive mechanism provided in an embodiment of this application.

[0018] The following are the labeling elements in the figure: 10. Enclosure; 11. Circular passage; 12. First long space; 13. Second long space; 14. Enclosure wall; 15. Base; 16. Rectangular frame; 17. Partition; 18. Vertical rod; 20. First mounting component; 21. Mounting part; 22. Column; 23. Mounting plate; 30. First detector; 31. Horizontal detection area; 40. Second mounting component; 50. Second detector; 51. Circular detection area; 60. Photovoltaic module; 61. Camera; 70. Shielding plate; 71. Fixing plate; 80. Drive mechanism; 81. Drive motor; 82. Transmission shaft; 83. Driving wheel; 84. Driven wheel; 90. Substation. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0020] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0021] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and 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 this application.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0023] Please see Figures 1 to 5 The safety protection device for an unattended substation provided in this application will now be described. An unattended substation safety protection device includes a enclosure 10, a first mounting component 20, a first detector 30, a second mounting component 40, and a second detector 50. The enclosure 10 is arranged in a ring and surrounds the substation 90. A ring passage 11 is formed between the enclosure 10 and the substation 90, and the ring passage 11 has a first elongated space 12 arranged in parallel and spaced apart, and two second elongated spaces 13 arranged in parallel and spaced apart, the first elongated spaces 12 and the second elongated spaces 13 being perpendicular to each other. There are four first mounting components 20, located in the two first elongated spaces 12 and the two second elongated spaces 13 respectively. Each first mounting component 20 has two components located in the first... Mounting portions 21 are located on the upper sides of both ends of the long space 12 and on the upper side of the second long space 13; there are multiple first detectors 30, all mounted on the first mounting member 20; the receiving end and transmitting end of the first detector 30 are respectively placed on the two mounting portions 21 on the first mounting member 20; multiple first detectors 30 form a horizontal detection area 31 located on the upper side of the annular channel 11; there are four second mounting members 40, arranged in a rectangle in the annular channel 11, and respectively set at the four corners of the enclosure 10; there are multiple second detectors 50, respectively mounted on the four second mounting members 40; the four detectors form an annular detection area 51 arranged around the substation 90.

[0024] Compared with existing technologies, the unmanned substation safety protection device provided in this application uses a ring-shaped enclosure 10 as its basic framework. The enclosure 10 and the substation 90 form a ring-shaped channel 11 composed of mutually perpendicular first and second elongated spaces 12 and 13. This spatial structure retains the basic function of physical isolation while providing a reasonable layout for the installation of detection equipment. Four first mounting components 20 are respectively arranged in the two types of elongated spaces. The mounting portions 21 at both ends and the upper side provide precise installation positions for the first detectors 30. By placing the receiving and transmitting ends of the detectors in different mounting portions 21, multiple first detectors 30 work together to form a horizontal detection area 31 covering the upper side of the ring-shaped channel 11, achieving comprehensive monitoring of the area above the channel. Simultaneously, four rectangular second mounting components 40 arranged at the four corners of the enclosure 10 carry multiple second detectors 50, collectively forming a ring-shaped detection area 51 surrounding the substation 90, creating a three-dimensional intersecting monitoring network with the horizontal detection area 31.

[0025] During operation, firstly, the ring-shaped enclosure 10 is fixed according to the actual area of ​​the substation 90, and the specific positions of the first long space 12 and the second long space 13 are determined to delineate the boundary of the ring channel 11. Then, the four first mounting pieces 20 are installed to the corresponding long spaces, the angle of the mounting part 21 is adjusted, and the first detector 30 is fixed. The alignment accuracy of the transmitting and receiving ends is calibrated to ensure that the horizontal detection area 31 has no blind spots. Next, the second mounting pieces 40 are positioned and installed at the four corners of the enclosure 10, the second detector 50 is assembled, and the equipment parameters are adjusted so that the ring detection area 51 and the horizontal detection area 31 are arranged vertically. Finally, the entire device is started, and the system self-test is completed through the signal transmission and feedback mechanism of the detectors. After confirming that the equipment is operating normally, it can be put into unattended monitoring. Compared with traditional fences, it solves the drawbacks of passive isolation of traditional fences through the dual protection of the horizontal detection area 31 and the ring detection area 51, realizing active perception and real-time monitoring of intrusion behavior, effectively avoiding the monitoring blind spots and reaction delays of manual patrols. The structured design of the ring channel 11 and the precise layout of the detectors ensure the comprehensiveness of the protection range.

[0026] This device can effectively reduce manual operation costs and lower human resource requirements. Simultaneously, it improves operational efficiency and equipment reliability. Furthermore, from a safety perspective, this device enhances the safety of substations, reducing personnel injuries and equipment damage accidents, and ensuring safe production in the ore processing plant.

[0027] Please see Figures 1 to 4 As a specific embodiment of the unattended substation safety protection device provided in this application, the first mounting component 20 includes a column 22 and a mounting plate 23 mounted on the upper end of the column 22. The mounting plate 23 serves as the mounting part 21. The mounting plate 23 is provided with multiple spaced-apart receiving or transmitting ends of first detectors 30, which are arranged along the width direction of the first elongated space 12 or the second elongated space 13. The first mounting component 20 adopts a simple structure of a column 22 and an upper mounting plate 23, with the mounting plate 23 directly serving as the mounting part 21. This structure is stable and easy to assemble and debug. The spaced-apart receiving or transmitting ends of multiple first detectors 30 on the mounting plate 23, arranged along the width direction of the elongated space, can accurately adapt to the spatial shape of the annular channel 11, ensuring that the horizontal detection area 31 has no blind spots in the width dimension. This method allows for flexible adjustment of the number and spacing of the first detectors 30 according to the channel width, adapting to the needs of substations of different sizes 90. Simultaneously, the separate receiving and transmitting ends improve signal transmission stability and reduce environmental interference.

[0028] Please see Figures 1 to 4As a specific implementation of the unattended substation safety protection device provided in this application, the first mounting component 20 is arranged close to the enclosure 10, and the two adjacent mounting plates 23 of the two adjacent first mounting components 20 are arranged vertically. The installation close to the enclosure 10 can make full use of the space around the enclosure 10, avoid occupying too much area of ​​the annular channel 11, and ensure the integrity of the channel function. The vertical arrangement of the adjacent mounting plates 23 can realize the seamless connection of the horizontal detection area 31 at the corner of the enclosure 10, eliminate the detection blind spot, and at the same time fit the corner structure of the annular channel 11, improve the adaptability of the device to the space.

[0029] Please see Figures 1 to 4 As a specific implementation of the unattended substation safety protection device provided in this application, the installation height of multiple first detectors 30 is controlled to be below or level with the top of the transformer, precisely matching the layout height of the core equipment 90 in the substation. This method effectively avoids interference from large equipment such as transformers blocking the detection signals, ensuring the signal transmission stability of the horizontal detection zone 31. It also avoids increasing installation difficulty and maintenance risks due to excessively high detector installation, and does not affect the work space for daily transformer maintenance. This height design further optimizes the effective coverage of the horizontal detection zone 31, eliminates monitoring blind spots caused by equipment obstruction, and forms a more precise three-dimensional protection network with the ring detection zone 51.

[0030] Please see Figures 1 to 4 As a specific embodiment of the unattended substation safety protection device provided in this application, the second mounting component 40 is arranged vertically, and each second mounting component 40 is equipped with multiple second detectors 50 arranged vertically and horizontally, forming multiple annular detection areas 51 arranged vertically and horizontally. The vertical structure can make full use of the height space at the four corners of the enclosure 10, and the multi-layered layout of second detectors 50 can cover different height ranges, avoiding the low-altitude or high-altitude protection blind spots existing in traditional single-height monitoring. At the same time, the vertical and horizontal spacing can improve the recognition accuracy of intrusion behavior at different heights and adapt to diverse intrusion scenarios. This structure, together with the horizontal detection area 31 of the first detector 30, constructs a full-dimensional three-dimensional protection network, completely solving the problem of the single dimension of traditional fence protection, and greatly improving the accuracy and timeliness of intrusion early warning in unattended situations.

[0031] Please see Figure 1As a specific implementation of the unattended substation safety protection device provided in this application, it also includes a support frame located inside the enclosure 10 and a photovoltaic module 60 installed on the support frame. The photovoltaic module 60 is located above the enclosure 10. The photovoltaic module 60 is connected to the first detector 30 and the second detector 50. The photovoltaic module 60 is deployed above the enclosure 10, which neither occupies the monitoring space of the ring channel 11 nor affects the operation and maintenance of the core equipment of the substation 90. At the same time, it relies on solar energy to achieve clean energy power supply, which is suitable for unattended substation 90 scenarios in remote areas or with unstable power supply. Moreover, the sustainability of photovoltaic power supply greatly reduces long-term energy costs.

[0032] Please see Figure 1 As a specific implementation of the unattended substation safety protection device provided in this application, it also includes a camera 61. The height of the camera 61 is greater than the height of the first detector 30 and the substation 90. The camera 61 is set close to the enclosure 10 and is positioned facing the substation 90. This method of installing the camera 61 avoids equipment obstruction and achieves a comprehensive, blind-spot-free overhead coverage of the entire substation 90. At the same time, its close proximity to the enclosure 10 and inward orientation allows for precise focusing on core equipment areas, capturing detailed images. By leveraging the complementary three-dimensional detection area formed by the camera 61, the first detector 30, and the second detector 50, when a detector triggers an alarm, the camera 61 can simultaneously transmit real-time images, helping staff quickly verify the intrusion situation and assess the risk level. In unattended mode, this not only enhances the accuracy of the alarm and the efficiency of the response but also provides image evidence for post-incident tracing, further improving the safety protection system.

[0033] Please see Figure 1 and Figure 5 As a specific embodiment of the safety protection device for the unattended substation provided in this application, the enclosure 10 has four ring-shaped retaining walls 14. Each retaining wall 14 includes a base 15 and a rectangular frame 16 mounted on the base 15. The rectangular frame 16 contains partitions 17 and multiple parallel-spaced vertical rods 18, with the vertical rods 18 positioned above the partitions 17. The rectangular frame 16 integrates the partitions 17 and the parallel-spaced vertical rods 18, forming a layered physical protection structure. The base 15 provides reliable support for the entire enclosure 10, enhancing its impact resistance; the parallel-spaced vertical rods 18 effectively block illegal intrusion; and the partitions 17 further strengthen the stability of the frame structure, forming a layered protective barrier. This enclosure 10 retains the core function of physical isolation while overcoming the weakness of traditional fences in resisting damage, providing a solid physical foundation for the intelligent detection system constructed by the first detector 30 and the second detector 50, significantly improving the basic protection reliability of the unattended substation 90. The lower partitions 17 effectively prevent animals from entering.

[0034] Please see Figure 1 , Figures 5 to 7 As a specific implementation of the unattended substation safety protection device provided in this application, each vertical pole 18 is equipped with a rotatably connected shield 70 on the side closest to the substation 90. A drive mechanism 80 for driving the rotation of multiple shields 70 is also provided on the rectangular frame 16, forming a dynamically adjustable physical protection structure. The rotatable design of the shield 70 combines normal permeability with emergency closure, while the drive mechanism 80 ensures timely and synchronous protection response. It can form a linked protection system in conjunction with the intelligent detection system without affecting the passageway use during routine equipment maintenance of the substation 90. Under normal conditions, the shield 70 can remain open, ensuring ventilation and visibility of the annular passageway 11, while facilitating staff inspection operations. The coordinated design of the shield 70 and the vertical pole 18 further enhances the anti-damage capability of the enclosure 10.

[0035] Please see Figures 5 to 7 As a specific embodiment of the unattended substation safety protection device provided in this application, the vertical rod 18 is provided with a fixed plate 71 on the side near the substation 90, and the shield plate 70 is provided with a rotating shaft that is rotatably connected to the fixed plate 71; the drive mechanism 80 includes a drive motor 81, a transmission shaft 82, multiple driving wheels 83 and multiple driven wheels 84, the driven wheels 84 are installed on the corresponding rotating shaft, the transmission shaft 82 is rotatably connected to multiple fixed plates 71, multiple driving wheels 83 are all installed on the transmission shaft 82, and the driving wheels 83 are meshed with the corresponding driven wheels 84, and the drive motor 81 is connected to the transmission shaft 82; the stable synchronous drive of the shield plate 70 is achieved through mechanical structure design. Specifically, the basic active structure is constructed by the rotational connection between the fixed plate 71 and the rotating shaft of the shield plate 70. The drive mechanism 80 takes the drive motor 81, the transmission shaft 82 and the gear meshing as the core transmission link. Through the corresponding meshing of the driving wheels 83 and the driven wheels 84, the motor power is accurately transmitted to the rotating shaft of each shield plate 70. This transmission method boasts high reliability and synchronization. Gear meshing effectively prevents slippage, ensuring multiple baffles 70 open or close simultaneously. Furthermore, the rotational connection between the drive shaft 82 and the fixed plate 71 enhances the overall stability of the mechanism, making it suitable for the complex outdoor environment of substations 90. Compared to traditional manual or distributed drive methods, it offers a higher degree of automation, fully adaptable to unattended scenarios. A protective box is arranged along the length of the drive shaft 82 to surround the drive shaft 82, multiple drive wheels 83, and multiple driven wheels 84, ensuring stable and efficient operation of the entire drive mechanism 80. The drive wheels 83 and driven wheels 84 are either bevel gears or worm gears.

[0036] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A safety protection device for an unattended substation, characterized in that, include: The enclosure is arranged in a ring and surrounds the substation; the enclosure and the substation form a ring passage, and the ring passage has a first long strip space arranged in parallel and two second long strip spaces arranged in parallel and perpendicular to each other; The first mounting component, numbered four, is located in two of the first elongated spaces and two of the second elongated spaces respectively; the first mounting component has two mounting portions located on the upper sides of both ends of the first elongated space and on the upper side of the second elongated space respectively; Multiple first detectors are mounted on the first mounting component; the receiving end and transmitting end of the first detector are respectively placed on two mounting portions on the first mounting component; the multiple first detectors form a horizontal detection area located on the upper side of the annular channel; The second mounting component, numbering four, is arranged in a rectangular shape in the annular channel and is respectively located at the four corners of the enclosure; Multiple second detectors are installed on four second mounting components; the four detectors form a ring-shaped detection area surrounding the substation.

2. The unattended substation safety protection device as described in claim 1, characterized in that, The first mounting component includes a column and a mounting plate mounted on the upper end of the column, the mounting plate being the mounting part; the mounting plate is provided with a plurality of receiving ends or transmitting ends of the first detectors arranged at intervals, the plurality of first detectors being arranged along the width direction of the first elongated space or the second elongated space.

3. The unattended substation safety protection device as described in claim 2, characterized in that, The first mounting component is arranged close to the frame, and the two adjacent mounting plates are arranged vertically.

4. The unattended substation safety protection device as described in claim 2, characterized in that, The height of multiple of the first detectors is either below the top of the transformer or level with the top of the transformer.

5. The unattended substation safety protection device as described in claim 1, characterized in that, The second mounting component is arranged vertically, and each second mounting component is provided with multiple second detectors arranged vertically at intervals, forming multiple annular detection areas arranged vertically at intervals.

6. The unattended substation safety protection device as described in claim 1, characterized in that, It also includes a support frame located within the enclosure and a photovoltaic module mounted on the support frame, the photovoltaic module being located above the enclosure; the photovoltaic module is connected to the first detector and the second detector.

7. The unattended substation safety protection device as described in claim 6, characterized in that, It also includes a camera, the height of which is greater than the height of the first detector and the substation. The camera is positioned close to the enclosure and is arranged facing the substation.

8. The unattended substation safety protection device as described in claim 1, characterized in that, The enclosure has four circularly arranged barriers. Each barrier includes a base and a rectangular frame mounted on the base. The rectangular frame contains partitions and multiple parallel, spaced vertical bars, which are located above the partitions.

9. The unattended substation safety protection device as described in claim 8, characterized in that, Each of the vertical poles is provided with a rotatably connected shielding plate on the side closest to the substation, and the rectangular frame is also provided with a drive mechanism for driving the multiple shielding plates to rotate.

10. The unattended substation safety protection device as described in claim 9, characterized in that, The vertical pole is provided with a fixed plate on the side near the substation, and the shielding plate is provided with a rotating shaft that is rotatably connected to the fixed plate; the driving mechanism includes a drive motor, a transmission shaft, multiple driving wheels and multiple driven wheels, the driven wheels are mounted on the corresponding rotating shafts, the transmission shafts are rotatably connected to multiple fixed plates, multiple driving wheels are mounted on the transmission shafts, and the driving wheels are meshed with the corresponding driven wheels, and the drive motor is connected to the transmission shaft.

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