35kV outdoor cable distribution box for high-altitude wind-light electric field

Abstract

The technical problem to be solved by the utility model is to provide the 35kV outdoor cable distribution box for the high-altitude wind-light electric field, and the outdoor cable distribution box can well adapt to the environment of a high-altitude region, meet the operation requirement of higher reliability, and effectively reduce the probability of occurrence of operation faults. The outdoor cable distribution box comprises a box body, the top of the box body is provided with a European T-shaped joint, the box body is internally provided with a busbar, the European T-shaped joint is electrically connected with the busbar through a wall bushing, the left and right sides of the busbar are symmetrically provided with expansion cable joints, and an on-off structure is arranged between the expansion cable joints and the busbar. A pressure balance structure and a control system are arranged in the box body, the box body is connected to an internal busbar through a European style T-shaped joint, electric power is distributed to an expansion cable joint through the busbar to realize branching or junction of cables, the modular design is convenient for installation and maintenance, and through the pressure balance structure and the control system, the pressure difference inside and outside the box body is balanced, and the box body structure is prevented from being deformed. The service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric power equipment, concretely relates to a 35kV outdoor cable distribution box for high-altitude wind and light power field. BACKGROUND

[0002] In the new energy scene such as wind power field and photovoltaic power station, the cable distribution box is the important equipment of the electric power transmission system, and its main function is to complete the junction and distribution of the cable. In the high-altitude area, due to the cold climate, low air pressure, strong ultraviolet rays and the bad environment and other conditions, the traditional cable distribution box is difficult to meet the operation demand of high reliability, leading to the frequent operation failure, thereby affecting the safety and economy of the electric power system. Therefore, a cable distribution box specially used for high-altitude wind and light power field is designed, which has important engineering value and economic significance. SUMMARY

[0003] The utility model relates to the technical field of electric power equipment, concretely relates to a 35kV outdoor cable distribution box for high-altitude wind and light power field.

[0004] The utility model discloses a technical scheme that solves the technical problems: the 35kV outdoor cable distribution box for high-altitude wind and light power field, including the box, the top of the box is provided with at least one european T type joint;

[0005] The box is provided with a busbar through a first porcelain support insulator, and the number of the busbar is the same as that of the european T type joint and one-to-one correspondence, and the european T type joint is electrically connected with the corresponding busbar in the interior through a wall bushing;

[0006] The left and right sides of the busbar are symmetrically provided with expansion cable connectors, and the upper and lower ends of the expansion cable connectors are fixed in the box through second and third porcelain support insulators respectively;

[0007] The expansion cable connector and the busbar are provided with a on-off structure for the communication or disconnection of the expansion cable connector and the busbar;

[0008] The box is provided with a pressure balance structure for balancing the pressure difference between the inside and outside of the box and a control system, and the pressure balance structure is signal connected with the control system.

[0009] Further, the on-off structure includes a fourth porcelain support insulator;

[0010] The upper end of the fourth porcelain support insulator is provided with a first copper connecting piece, and one end of the first copper connecting piece is detachably connected with one end of the busbar;

[0011] The upper end of the third porcelain support insulator is provided with a second copper connecting sheet, one end of the second copper connecting sheet is detachably connected with the lower end of the extension cable joint;

[0012] An active rod is hinged on the second copper connecting sheet, an insulation layer is arranged on the outer side of the active rod, a contact block is arranged on the end of the active rod away from the second copper connecting sheet, when the active rod is in a horizontal state, the contact block is in contact with the first copper connecting sheet so that the extension cable joint is in electrical communication with the busbar.

[0013] Further, a limiting porcelain support insulator is arranged on the active rod;

[0014] The upper end of the limiting porcelain support insulator is hingedly arranged on the active rod in an upward direction, the lower end of the limiting porcelain support insulator is hingedly arranged with a rotating rod, and the two are in interference fit;

[0015] The bottom inner surface of the box body is provided with a groove matched with the rotating rod, one end of the rotating rod is arranged in one end of the groove through a rotating shaft, and the rotating rod and the rotating shaft are in interference fit, when the active rod is in a horizontal state, the rotating rod is located in the groove.

[0016] Further, the pressure balance structure comprises an air inlet pipe, an air outlet pipe, a first air pressure monitor, and a second air pressure monitor;

[0017] The air inlet pipe is arranged at the top of the box body, the two ends of the air inlet pipe are respectively in communication with the outside and the inside of the box body, and an electric air inlet valve is arranged on the air inlet pipe;

[0018] The air outlet pipe is arranged at the lower end of the side wall of the box body, the two ends of the air outlet pipe are respectively in communication with the outside and the inside of the box body, and an electric air outlet valve is arranged on the air outlet pipe;

[0019] The first air pressure monitor is arranged on the outer side wall of the box body through a fixing support, and the second air pressure monitor is arranged in the inside of the box body through a fixing support;

[0020] The first air pressure monitor, the second air pressure monitor, the electric air inlet valve, and the electric air outlet valve are respectively signal connected with a control system.

[0021] Further, a temperature and humidity adjusting device is further arranged in the box body;

[0022] The temperature and humidity adjusting device comprises a temperature and humidity sensor, a heating device, and a drying device;

[0023] The heating device is arranged on the inner side wall of the box body, the drying device is arranged in the box body through a mounting support, and the temperature and humidity sensor is arranged above the bottom of the box body through a supporting seat;

[0024] The temperature and humidity sensor, the heating device and the drying device are respectively connected with the control system.

[0025] Further, the box is provided with a satellite communication antenna on the outside, and a satellite communication module is further arranged in the box, which is respectively connected with the satellite communication antenna and the control system.

[0026] Further, the box is made of basalt fiber reinforced polyester material.

[0027] Further, the surface of the box is coated with an anti-ultraviolet layer and a corrosion-resistant coating.

[0028] The utility model discloses the beneficial effects of the following:

[0029] 1. Adopting the European T joint, through the bushing and the internal busbar system connection, the contact resistance is low, improves the temperature resistance, and ensures that the electrical connection is stable and reliable.

[0030] 2. Through the European T joint and connects to the internal busbar, and then distributes power to the extension cable joint through the busbar, so as to realize the tapping or the convergence of the cable, and at the same time, such modular design facilitates the on-site installation and the later maintenance.

[0031] 3. Through the pressure balance structure and the control system arranged in the box, the pressure difference between the inside and the outside of the box can be adjusted in the high-altitude area, the pressure difference between the inside and the outside of the box is balanced, the structure deformation of the box is prevented, and the service life is improved. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 The structure diagram of the 35kV outdoor cable distribution box for the high-altitude wind and light electric field of the utility model;

[0033] Figure 2 The structure diagram of the 35kV outdoor cable distribution box for the high-altitude wind and light electric field of the utility model from another perspective;

[0034] Figure 3 The front view of the internal structure of the box of the utility model;

[0035] Figure 4 The schematic diagram of the busbar, the extension cable joint, the first copper connecting piece, the second copper connecting piece, the movable rod and the contact block combined structure of the utility model;

[0036] Figure 5 The schematic diagram of the movable rod, the contact block, the limiting porcelain support insulator, the rotating rod and the rotating shaft combined structure of the utility model;

[0037] The figure is marked: box 1, European T joint 2, first porcelain support insulator 3, busbar 4, door body structure 5, expansion cable joint 6, second porcelain support insulator 7, third porcelain support insulator 8, control system 9, on-off structure 10, fourth porcelain support insulator 101, first copper connecting piece 102, second copper connecting piece 103, movable rod 104, contact block 105, limit porcelain support insulator 11, rotating rod 12, air inlet pipe 13, air outlet pipe 14, first air pressure monitor 15, second air pressure monitor 16, electric air inlet valve 17, electric air outlet valve 18, temperature and humidity sensor 19, heating device 20, drying device 21, satellite communication antenna 22, touch display screen 23, current sensor 24, Beidou positioning module 25, rotating shaft 26, voltage sensor 27, satellite communication module 28. DETAILED DESCRIPTION

[0038] The specific embodiments of the present application will be further described below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0039] It should be noted that all directional indication terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. in the embodiments of the present application indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. It is only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indication also changes accordingly.

[0040] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood broadly, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium; can be internal connection of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0042] like Figures 1-4 As shown, the 35kV outdoor cable junction box for high-altitude wind and solar power fields includes a box body 1. The box body 1 generally includes a left side plate, a right side plate, a front side plate, a rear side plate, a bottom plate, and a top plate. The left side plate, right side plate, front side plate, rear side plate, and bottom plate together form an open cavity. The top plate is located at the top of the cavity and has a herringbone structure to facilitate the sliding of rain and snow and prevent them from accumulating on the top of the box body 1 and causing adverse effects. The left side plate and right side plate of the box body 1 are provided with double-door door structures 5. The door structures 5 are used to enter the box body 1 for installation and maintenance operations. The door structures 5 are provided with a sealing strip made of silicone rubber to prevent moisture and dust from entering. The top of the box body 1 is provided with at least one European T-type connector 2. The number of European T-type connectors 2 is set according to actual needs, preferably three.

[0043] Inside the enclosure 1, busbars 4 are installed via first porcelain post insulators 3, and the number of busbars 4 is the same as the number of European T-type connectors 2 and corresponds one-to-one. The European T-type connectors 2 are electrically connected to the corresponding busbars 4 inside through wall bushings. The busbars 4 are made of tin-plated copper busbars with anti-oxidation treatment to improve their service life. A sealing element is provided at the connection between the European T-type connectors 2 and the enclosure 1. The sealing element is made of silicone rubber material and can adapt to temperature changes from -40℃ to +50℃.

[0044] The busbar 4 is symmetrically provided with extension cable joints 6 on the left and right sides. The upper and lower ends of the extension cable joints 6 are fixed in the box 1 by the second porcelain post insulator 7 and the third porcelain post insulator 8 respectively. When the cables of the high-altitude wind and solar power field need to be split or connected, the power enters the box 1 through the external cable, connects to the internal busbar 4 through the European T-type connector 2, and then distributes the power to the extension cable joints 6 through the busbar 4, thereby realizing the split or connection of the cables.

[0045] The on-off structure 10 is arranged between the extension cable joint 6 and the busbar 4 for connecting or disconnecting the extension cable joint 6 and the busbar 4, that is, when one or more extension cable joints 6 are not needed to be used, the corresponding extension cable joint 6 is disconnected from the busbar 4 through the corresponding on-off structure 10;

[0046] The pressure balance structure and the control system 9 are arranged in the box body 1 for balancing the pressure difference between the inside and the outside of the box body 1, and the pressure balance structure is signal connected with the control system 9. Since in the high-altitude area, the indoor and outdoor cable distribution box has the pressure difference between the inside and the outside, which may cause the mechanical stress change of the box body 1 to cause the deformation, and further affect the normal use of the box body 1. The pressure balance structure and the control system 9 arranged can realize the automatic balancing of the pressure difference between the inside and the outside of the box body 1, reduce the probability of the mechanical stress change of the box body 1 to cause the deformation, and the control system 9 generally adopts a programmable logic controller with a model number of S7-1200 and is used in cooperation with an Internet of Things gateway. The Internet of Things gateway is preferably a gateway with a model number of AR502H. The programmable logic controller used in cooperation with the Internet of Things gateway is a prior art, and thus is not described in detail herein.

[0047] As shown in Figures 3-5 In the embodiment, the on-off structure 10 preferably comprises a fourth porcelain post insulator 101.

[0048] The upper end of the fourth porcelain post insulator 101 is provided with a first copper connecting piece 102, one end of the first copper connecting piece 102 is detachably connected with one end of the busbar 4, and the detachable connection mode generally adopts a bolt to connect the two, facilitating the later maintenance.

[0049] The upper end of the third porcelain post insulator 8 is provided with a second copper connecting piece 103, one end of the second copper connecting piece 103 is detachably connected with the lower end of the extension cable joint 6, and the detachable connection mode generally adopts a bolt to connect the two, facilitating the later maintenance.

[0050] The second copper connecting piece 103 is hingedly connected with a movable rod 104, and the outer side of the movable rod 104 is provided with an insulating layer, which is preferably made of silicone rubber material. The second copper connecting piece 103 and the movable rod 104 are always in contact and communication. The end of the movable rod 104 away from the second copper connecting piece 103 is provided with a contact block 105. When the movable rod 104 is in a horizontal state, the contact block 105 is in contact with the first copper connecting piece 102, so that the extension cable joint 6 is in electrical communication with the busbar 4. When the corresponding extension cable joint 6 is not needed to be used, the movable rod 104 is rotated to separate the contact block 105 from the first copper connecting piece 102.

[0051] As shown in Figure 3 , Figure 5As shown, in this embodiment, in order to fix the position of the movable rod 104 after rotation, a limiting porcelain post insulator 11 is arranged on the movable rod 104;

[0052] The upper end of the limiting porcelain post insulator 11 is hingedly connected to the movable rod 104 in an upward direction, and the lower end of the limiting porcelain post insulator 11 is hingedly connected to a rotating rod 12, and the two are in interference fit;

[0053] The bottom inner surface of the box body 1 is provided with a groove matched with the rotating rod 12, one end of the rotating rod 12 is arranged in the groove through a rotating shaft 26, and the rotating rod 12 and the rotating shaft 26 are in interference fit. When the movable rod 104 is in a horizontal state, the rotating rod 12 is located in the groove. In addition, due to the existence of the limiting porcelain post insulator 11, a downward pulling force is applied to the movable rod 104, thereby ensuring the sustainability of the contact between the contact block 105 and the first copper connecting piece 102. When the corresponding expansion cable connector 6 is not needed, the movable rod 104 is only rotated to make the rotating rod 12 and the limiting porcelain post insulator 11 be in the same line, so that the contact block 105 is separated from the first copper connecting piece 102. Due to the fact that the lower end of the limiting porcelain post insulator 11 is hingedly connected to the rotating rod 12, and the two are in interference fit, and the rotating rod 12 and the rotating shaft 26 are in interference fit, a large enough external force is required to make it rotate. In this way, the movable rod 104 is limited and cannot be freely rotated to cause unnecessary contact.

[0054] As Figures 1-3 As shown, in this embodiment, as preferred, the pressure balance structure includes an air inlet pipe 13, an air outlet pipe 14, a first air pressure monitor 15, and a second air pressure monitor 16.

[0055] The air inlet pipe 13 is arranged at the top of the box body 1, and the two ends of the air inlet pipe 13 are respectively communicated with the outside and the inside of the box body 1. The air inlet pipe 13 is provided with an electric air inlet valve 17, and the end of the air inlet pipe 13 communicated with the outside is detachably provided with a dust screen, which is not shown in the figure. The detachable mode can be hoop or other mode. Through the dust screen, impurities in the outside air can be filtered to avoid the risk of short circuit caused by the accumulation of impurities on the components in the box body 1. The detachable design is to replace the dust screen regularly to avoid the influence of the blocked dust screen on air intake.

[0056] The exhaust pipe 14 is located at the lower end of the side wall of the housing 1. The two ends of the exhaust pipe 14 are connected to the outside and the inside of the housing 1, respectively. An electric exhaust valve 18 is installed on the exhaust pipe 14. A dustproof net (not shown in the figure) is detachably installed at the end of the exhaust pipe 14 that is connected to the outside. The detachable design can be achieved by means of clamps or other methods. The dustproof net can filter impurities in the outside air from entering the housing 1 and accumulating on the components, which may cause short circuits or other risks. The detachable design is for the purpose of periodically replacing the dustproof net to avoid the dustproof net being blocked and affecting the exhaust.

[0057] The first bar pressure monitor 15 is mounted on the outer wall of the housing 1 by a fixed bracket, and the second bar pressure monitor 16 is mounted inside the housing 1 by a fixed bracket.

[0058] The first air pressure monitor 15, the second air pressure monitor 16, the electric intake valve 17, and the electric exhaust valve 18 are respectively connected to the control system 9. The control system 9 is preset with a range of air pressure difference values. The first air pressure monitor 15 monitors the external air pressure, and the second air pressure monitor 16 monitors the internal air pressure of the housing 1. The difference between the two air pressure monitors is the air pressure difference between the inside and outside of the housing 1. When the monitored air pressure difference exceeds the preset value, when the internal pressure of the housing 1 is higher than the external pressure, the control system 9 controls the start of the electric exhaust valve 18 to automatically open the exhaust channel and release gas. When the internal pressure of the housing 1 is lower than the external pressure, the control system 9 controls the start of the electric intake valve 17 to allow external air to enter the housing 1, thereby achieving automatic adjustment of the pressure difference and effectively protecting the housing 1.

[0059] like Figure 3 As shown in this embodiment, due to the large temperature difference between day and night in high-altitude areas and the low temperature in winter, the low temperature will affect the normal operation of the internal components of the box 1 and condensation is likely to occur inside. Therefore, a temperature and humidity control device is also provided inside the box 1.

[0060] The temperature and humidity regulating device includes a temperature and humidity sensor 19, a heating device 20, and a drying device 21;

[0061] The heating device 20 is installed on the inner wall of the box 1. The heating device 20 is generally a PTC heater. The drying device 21 is installed inside the box 1 by a mounting bracket. The drying device 21 is generally a semiconductor electronic dehumidifier. The temperature and humidity sensor 19 is installed above the bottom of the box 1 by a support base. The temperature and humidity sensor 19 is a temperature and humidity sensor with model number E5CC-QX2DASM-800.

[0062] The temperature and humidity sensor 19, the heating device 20 and the drying device 21 are respectively connected with the control system 9 in signal, the temperature and humidity sensor 19 is used to monitor the temperature and humidity in the box 1 in real time, when the temperature is lower than the preset value, the control system 9 controls the heating device 20 to start heating, so that the temperature in the box 1 is in the appropriate working range, when the humidity is greater than the preset value, the control system 9 controls the drying device 21 to start dehumidification, so as to avoid the corrosion or short circuit of the components caused by the excessive humidity, and affect the service life.

[0063] As shown in Figure 2 、 Figure 3 In the embodiment, in order to conveniently and stably transmit the operation information in the box 1 at a long distance, a satellite communication antenna 22 is arranged on the outside of the box 1, and a satellite communication module 28 is further arranged in the box 1, the satellite communication module 28 is respectively connected with the satellite communication antenna 22 and the control system 9 in communication, the control system 9 is connected with a background server in communication through the satellite communication module 28 and the satellite communication antenna 22, the satellite communication module here selects a Beidou-3 satellite communication module, the satellite communication module is responsible for encoding and modulating the information, the encoded information is sent to the air in the form of electromagnetic wave through the satellite communication antenna, the electromagnetic wave signal is received by the Beidou-3 satellite, after receiving the signal, the Beidou-3 satellite decodes and re-encodes the signal, the satellite transmits the signal to the corresponding satellite link according to the position of the target user or the central control system, the background server end receives the signal from the Beidou-3 satellite and decodes and demodulates the signal, the control system is responsible for managing and controlling the whole communication process, the sending and receiving time sequence of the signal, and the adjustment of the communication parameters, etc., through the satellite communication antenna 22, the problem of signal in the high-altitude area can be effectively solved, long-distance communication is realized, and each monitoring data information can be transmitted to the background server through the satellite communication module 28 and the satellite communication antenna 22, so as to realize remote monitoring and viewing.

[0064] In the embodiment, as preferred, the box 1 is made of basalt fiber reinforced polyester material, which can withstand high-strength mechanical impact and aging effect under extreme environment.

[0065] In the embodiment, in order to further strengthen the ultraviolet resistance and corrosion resistance of the box 1, an ultraviolet resistant layer and a corrosion resistant coating are coated on the surface of the box 1, and preferably an epoxy zinc-rich primer and polyurethane topcoat are combined to achieve the purpose.

[0066] As shown in Figure 3As shown in this embodiment, in order to monitor the circuit status inside the enclosure 1 in real time, a current sensor 24 and a voltage sensor 27 are installed on the busbar 4. The control system 9 presets the current and voltage warning range values ​​for the busbar 4. The current data information of the busbar 4 is monitored in real time by the current sensor 24 and collected by the control system 9, and compared with the current warning range value. The operating data inside the enclosure is collected in real time. When the current warning range value is exceeded, an alarm information is sent. The voltage data information of the busbar 4 is monitored in real time by the voltage sensor 27 and collected by the control system 9, and compared with the voltage warning range value. When the voltage warning range value is exceeded, an alarm information is sent. The collected current and voltage information is transmitted to the back-end server via satellite communication for easy viewing. The alarm information is also transmitted to the back-end server via satellite communication to remind the staff to handle it in time. This can realize intelligent management of equipment operation status and fault warning.

[0067] like Figure 3 As shown in this embodiment, in order to facilitate quick positioning of the box 1, a Beidou positioning module 25 is provided inside the box 1. The Beidou positioning module 25 is connected to the control system 9 via signal, and high-precision positioning is achieved through the Beidou positioning module 25.

[0068] like Figure 3 As shown in this embodiment, in order to conveniently and intuitively view the data information inside the housing 1, a touch screen 23 is provided inside the housing 1. The touch screen 23 is connected to the control system 9. Through the touch screen 23, various monitoring data information can be displayed intuitively for viewing. In addition, the touch screen 23 can also realize human-computer interaction, making it convenient to set and modify relevant parameters.

[0069] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A 35 kV outdoor cable distribution box for high altitude wind power plants, comprising a box (1), characterized in that: The top of the box (1) is provided with at least one European T-shaped joint (2); The box (1) is provided with busbars (4) through first porcelain support insulators (3), the number of the busbars (4) is the same as that of the European T-shaped joints (2) and one-to-one correspondence, the European T-shaped joints (2) are electrically connected with the corresponding busbars (4) through bushings; The left and right sides of the busbar (4) are symmetrically provided with expansion cable joints (6), the upper and lower ends of the expansion cable joint (6) are fixed in the box (1) through the second porcelain support insulator (7) and the third porcelain support insulator (8) respectively; The expansion cable joint (6) and the busbar (4) are provided with a on-off structure (10) for communication or disconnection of the expansion cable joint (6) and the busbar (4); The box (1) is provided with a pressure balance structure for balancing the pressure difference between the inside and outside of the box (1) and a control system (9), and the pressure balance structure is signal connected with the control system (9).

2. The 35 kV outdoor cable distribution box for high altitude wind power generation sites according to claim 1, characterized in that: The on-off structure (10) comprises a fourth porcelain support insulator (101); The upper end of the fourth porcelain support insulator (101) is provided with a first copper connecting sheet (102), one end of the first copper connecting sheet (102) is detachably connected with one end of the busbar (4); The upper end of the third porcelain support insulator (8) is provided with a second copper connecting sheet (103), one end of the second copper connecting sheet (103) is detachably connected with the lower end of the expansion cable joint (6); The second copper connecting sheet (103) is hingedly connected with a movable rod (104), the outer side of the movable rod (104) is provided with an insulating layer, the end of the movable rod (104) away from the second copper connecting sheet (103) is provided with a contact block (105), when the movable rod (104) is in a horizontal state, the contact block (105) is in contact with the first copper connecting sheet (102) so that the expansion cable joint (6) is in electrical communication with the busbar (4).

3. The 35 kV outdoor cable distribution box for high altitude wind power generation sites according to claim 2, characterized in that: The movable rod (104) is provided with a limiting porcelain support insulator (11); The upper end of the limiting porcelain support insulator (11) is hingedly connected to the movable rod (104) in an upward direction, the lower end of the limiting porcelain support insulator (11) is hingedly connected with a rotating rod (12) in a hard fit manner; The inner surface of the bottom of the box (1) is provided with a groove matched with the rotating rod (12), one end of the rotating rod (12) is arranged in the groove through a rotating shaft (26), the rotating rod (12) and the rotating shaft (26) are in interference fit, when the movable rod (104) is in a horizontal state, the rotating rod (12) is located in the groove.

4. The 35 kV outdoor cable distribution box for high altitude wind power generation sites according to claim 1, characterized in that: The pressure balance structure comprises an air inlet pipe (13), an air outlet pipe (14), a first air pressure monitor (15) and a second air pressure monitor (16); The air inlet pipe (13) is arranged at the top of the box (1), the two ends of the air inlet pipe (13) are respectively in communication with the outside and the inside of the box (1), and the air inlet pipe (13) is provided with an electric air inlet valve (17); The exhaust pipe (14) is arranged at the lower end of the side wall of the box (1), both ends of the exhaust pipe (14) are respectively communicated with the outside and the inside of the box (1), and the exhaust pipe (14) is provided with an electric exhaust valve (18); The first air pressure monitor (15) is arranged on the outer side wall of the box (1) through a fixing support, and the second air pressure monitor (16) is arranged in the box (1) through a fixing support; The first air pressure monitor (15), the second air pressure monitor (16), the electric air inlet valve (17) and the electric exhaust valve (18) are respectively signal connected with the control system (9).

5. The 35 kV outdoor cable distribution box for high altitude wind power generation sites according to claim 1, characterized in that: The box (1) is further provided with a temperature and humidity adjusting device; The temperature and humidity adjusting device comprises a temperature and humidity sensor (19), a heating device (20) and a drying device (21); The heating device (20) is arranged on the inner side wall of the box (1), the drying device (21) is arranged in the box (1) through a mounting support, and the temperature and humidity sensor (19) is arranged above the bottom of the box (1); The temperature and humidity sensor (19), the heating device (20) and the drying device (21) are respectively signal connected with the control system (9).

6. The 35 kV outdoor cable distribution box for high altitude wind power generation sites according to claim 1, characterized in that: The outer side of the box (1) is provided with a satellite communication antenna (22), and the box (1) is further provided with a satellite communication module (28), the satellite communication module (28) is respectively signal connected with the satellite communication antenna (22) and the control system (9), and the control system (9) is signal connected with a background server through the satellite communication module (28) and the satellite communication antenna (22).

7. The 35 kV outdoor cable distribution box for high altitude wind power generation sites according to claim 1, characterized in that: The box (1) is made of basalt fiber reinforced polyester material.

8. The 35 kV outdoor cable distribution box for high altitude wind power generation sites according to claim 1, characterized in that: The surface of the box (1) is coated with an anti-ultraviolet layer and a corrosion-resistant coating.

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