Visual high-voltage cable cross grounding interconnection box

Abstract

The utility model provides a visual high-voltage cable cross grounding interconnection box, and belongs to the field of electrical equipment. Comprising a box body, and an insulating plate is arranged in the box body; the plurality of first conductor wire clamps are arranged on the insulating plate and are used for connecting first external conductors; the plurality of second conductor wire clamps are arranged on the insulating plate and are used for connecting second external conductors; wherein the plurality of first conductor wire clamps and the plurality of second conductor wire clamps are connected with each other; the grounding wire clamp is arranged on the insulating plate and is sequentially communicated with the plurality of first conductor wire clamps; the plurality of current transformers are respectively arranged between the first conductor wire clamp and the second conductor wire clamp; and the display unit is arranged on the box body and is used for displaying the current detected by the current transformer. On the premise that the box body is not opened, the induction current in the box body can be determined, and the safety of operators is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of electrical equipment, and in particular relates to a visual high-voltage cable cross-grounding interconnection box. Background Technology

[0002] When high-voltage cable lines are long, a metal sheath cross-connection technique is typically used to reduce the induced current in the cable shield. This method divides the cable line into several large sections (usually longer than 1000 meters), each of which is further divided into three smaller sections, with insulating joints installed between each section. Then, the metal sheaths of these three smaller sections are transposed using a cross-connection box, and grounding devices are installed at the insulating joints. Simultaneously, each large section of cable is grounded in parallel. In this way, the three-phase cables are typically arranged symmetrically. Ideally, the induced current generated by the metal sheath in each smaller section has equal amplitude and a 120° phase difference, achieving three-phase balance and effectively canceling the induced current on the larger sections of the metal sheath.

[0003] Existing cross-connection grounding systems have some significant shortcomings in use, particularly in current monitoring and maintenance, where they have exposed some practical problems:

[0004] Chinese patent document CN111064157 A discloses a "Visualized Power Cable Cross-Interconnection Grounding with Illumination," comprising a cross-interconnection grounding box body and a box door. The box door has an observation window, which includes a fixed frame, a sealing gasket, and translucent glass. The fixed frame is located on the box door housing, and an external damage protection plate is hinged to its outer end. An illumination lamp is installed inside the box body, powered by a battery in a power supply box and controlled by an on / off switch. This invention ensures the safety of personnel and the power system, significantly reduces the complexity of inspecting cross-interconnection connections, and minimizes waste of manpower and resources. However, because the connection between the cross-interconnection grounding box and the high-voltage cable's metal sheath uses a coaxial cable, measuring the current in the high-voltage cable's metal sheath usually requires opening the grounding box cover. This operation not only increases the workload of maintenance personnel but also poses certain safety risks. Because the induced current in the metal sheath of the high-voltage cable cannot be measured when the front cover of the cross-connection grounding box is opened, electrical equipment is exposed when the grounding box cover is open, which may lead to electrical contact accidents or other potential hazards. Secondly, frequent opening of the grounding box cover accelerates the aging of seals such as sealing rings, reduces the box's waterproof and dustproof capabilities, and ultimately affects the overall performance and safety of the equipment. A poorly sealed grounding box may cause moisture to enter the internal electrical components, affecting the insulation effect of the grounding system and even causing grounding system failures.

[0005] Chinese patent document CN207946489U discloses a "Novel Cross-Interconnection Grounding Box for High-Voltage Cables with Observable Grounding Current," comprising a box body and a cover. The box body is equipped with lead wire and grounding wire inlets. Inside the box, there is an insulating support plate, parallel galvanized copper busbars, an epoxy mounting plate, terminals, protectors, and an ammeter. The insulating support plate is located on the bottom of the box body. A parallel galvanized copper busbar is mounted on one side of the insulating support plate, and an epoxy mounting plate is mounted on the other side. Protectors A, B, and C are mounted on the parallel galvanized copper busbars. Terminals 1, 2, and 3 are mounted on one side of the epoxy mounting plate, and terminals 4, 5, and 6 are mounted on the other side. Terminals 1, 2, and 3 are electrically connected to the protectors. The three currents are respectively electrically connected to terminals 2 and 4, terminals 3 and 5, and terminals 1 and 6 through the copper busbars. Although this new type of device allows direct observation of the induced current through the cover without opening the box, overcoming the technical shortcomings of existing technologies such as long operation time and electric shock hazards caused by opening the cover for detection, directly connecting a large-range ammeter in series with the cross-interconnected grounding system will seriously affect the reliable operation of the power grid if the ammeter is damaged, causing grounding failure and failing to provide timely warnings.

[0006] Chinese patent document CN 216312656 U discloses "An Integrated Intelligent Cross-Interconnection Grounding Box with Human-Machine Interaction Screen", which includes a box body composed of a front door panel, a rear panel, a left side panel, a right side panel, and a bottom panel. The top of the box body is also provided with an inverted V-shaped top cover. An air outlet ring with a shape matching the top of the box body is provided around the lower inner wall of the top of the top cover. The air outlet ring is connected to the top of the box body, and a cooling fan is also provided within the inner ring of the air outlet ring. Air inlets are provided at the lower parts of the left and right side panels. A wired / wireless communication module and a data acquisition and processing unit are provided in the upper part of the box body; a power management unit and a video / image intelligent monitoring unit are provided in the middle part; a grounding unit is provided at the bottom; a sensing unit is also provided inside the box body; and a human-machine interaction screen is provided on the front door panel. This grounding box has a scientifically designed structure, good ventilation and heat dissipation, and can monitor line operating parameters and the working environment in real time all day and provide timely warnings. Although this utility model not only has the traditional cross-interconnection grounding function of cable outer sheath, but also can monitor line operating parameters and working environment in real time and provide timely warnings, its complex structure and large size make it inconvenient to use in places with limited space, such as urban underground utility tunnels. Moreover, the human-machine interface screen used in this utility model is easily damaged in high electromagnetic environments, which undoubtedly increases the operation and maintenance costs. Utility Model Content

[0007] This utility model provides a visualized high-voltage cable cross-grounding interconnection box, which allows for the determination of the magnitude of the induced current inside the box without opening the box, ensuring the safety of operators. It includes:

[0008] The enclosure contains an insulating board.

[0009] Multiple first conductor clamps are mounted on an insulating plate for connecting to the first external conductor;

[0010] Multiple second conductor clamps are disposed on an insulating plate for connecting a second external conductor; wherein, multiple first conductor clamps are interconnected with multiple second conductor clamps.

[0011] A grounding clamp is mounted on an insulating plate and is sequentially connected to multiple first conductor clamps.

[0012] Multiple current transformers are respectively installed between the first conductor clamp and the second conductor clamp;

[0013] The display unit, located on the enclosure, is used to display the current detected by the current transformer.

[0014] Optionally, the enclosure includes a main body and a cover plate, which are rotatably connected, and the main body is provided with a rubber sealing strip at the connection surface with the cover plate.

[0015] Optionally, the display unit is an ammeter.

[0016] Optionally, the current transformer is connected to the display unit via a copper wire, and the outside of the copper wire is provided with a heat insulation layer and a flame-retardant material layer.

[0017] Optionally, the cross-sectional area of ​​the copper wire is 1.5~3mm². 2 .

[0018] Optionally, it also includes:

[0019] The data acquisition and transmission module is used to remotely transmit the current information acquired by the current transformer to the user.

[0020] Optionally, the data acquisition and transmission module includes a communication module using an IoT card and an RS485 communication module.

[0021] Optionally, a shielding sleeve is provided on the outer surface of the data acquisition and transmission module.

[0022] Optionally, it also includes a power module, which includes a power generation unit and an energy storage unit. The power generation unit uses renewable energy to charge the energy storage unit, and the energy storage unit supplies power to the current transformer, the display unit, and the data acquisition and transmission module.

[0023] Optionally, the power generation unit includes a wind power generation unit and a solar power generation unit.

[0024] The beneficial effects of the technical solution provided by this utility model are:

[0025] To address the problem of induced current detection in the metallic sheath of high-voltage cables, this invention provides a solution by installing a current transformer in a cross-connection grounding box and three display units on the secondary side of the current transformer to display the induced current of the high-voltage cable in the cross-connection grounding system. This allows maintenance personnel to monitor the current in the metallic sheath of the high-voltage cable without the need for any tools or opening the front cover of the cross-connection grounding box, ensuring the safe and stable operation of the high-voltage cable.

[0026] This invention monitors high-voltage cables using a current transformer, rather than directly connecting the ammeter in series with the cross-connection grounding circuit. This effectively prevents the cross-connection grounding from opening due to ammeter damage, thus increasing the safety and reliability of the invention. The current transformer measures the high-voltage cable by converting a large primary current into a small secondary current based on the principle of electromagnetic induction. instrument A current transformer consists of a closed iron core and... winding Composition: Its primary winding has very few turns and is connected in series with the circuit whose current needs to be measured. Therefore, it often carries the entire current of the circuit. The secondary winding has more turns and is connected in series with the measuring instrument and protection circuit. When the current transformer is working, its secondary circuit is always closed. Therefore, the impedance of the series coil of the measuring instrument and protection circuit is very small, and the operating state of the current transformer is close to a short circuit, so its risk of damage is relatively small.

[0027] This invention utilizes a display unit installed on the front cover of the cross-connection grounding box to display the secondary current of the current transformer. This design allows maintenance personnel to directly observe the induced current in the metal sheath of the high-voltage cable without opening the box cover during inspections. This avoids exposing electrical equipment and reduces the risk of electric shock for maintenance personnel. Furthermore, it avoids frequent opening of the grounding box cover and sealing rings, reducing the risk of moisture buildup in internal electrical components due to poor sealing, which could affect the insulation of the grounding system and even cause grounding system failures. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the structure of a visualized high-voltage cable cross-grounding interconnection box provided by this utility model;

[0030] Figure 2 A schematic diagram of the structure of a display unit provided by this utility model;

[0031] Figure 3 A schematic diagram of another visualized high-voltage cable cross-grounding interconnection box provided by this utility model;

[0032] Figure 4 A structural block diagram of a visualized high-voltage cable cross-grounding interconnection box provided for utility model;

[0033] Figure 5 This is a schematic diagram of the structure of a power module provided by this utility model.

[0034] The attached figures are labeled as follows:

[0035] 1: Enclosure; 11: Main body; 12: Cover plate; 13: Rubber sealing strip; 14: Hinge; 15: Copper busbar; 16: Interlayer protector;

[0036] 2: First conductor clamp; 21: Phase A inner conductor clamp; 22: Phase B inner conductor clamp; 23: Phase C inner conductor clamp;

[0037] 3: Second conductor clamp; 31: Phase A outer conductor clamp; 32: Phase B outer conductor clamp; 33: Phase C outer conductor clamp;

[0038] 4: Grounding clamp;

[0039] 5: Current transformers; 51: First current transformer; 52: Second current transformer; 53: Third current transformer; 54: Copper wire; 55: Input / output interface;

[0040] 6: Display unit; 61: First ammeter; 62: Second ammeter; 63: Third ammeter;

[0041] 7: Data acquisition and transmission module;

[0042] 8: Power supply module; 82: Power generation unit; 82: Energy storage unit; 83: Regulator; 84: Battery charge / discharge controller; 85: AC / DC output unit;

[0043] 9: Monitoring terminal. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0045] Figure 1 , Figure 3 This utility model provides a structural schematic diagram of a visualized high-voltage cable cross-grounding interconnection box.

[0046] Figure 2 This is a schematic diagram of the structure of a display unit provided by the present invention.

[0047] See also Figures 1 to 3 The visualized high-voltage cable cross-grounding interconnection box includes:

[0048] Box 1, wherein an insulating board 10 is provided inside the box 1;

[0049] Multiple first conductor clamps 2 are disposed on the insulating plate 10 for connecting the first external conductor;

[0050] Multiple second conductor clamps 3 are disposed on the insulating plate 10 for connecting the second external conductor; wherein, multiple first conductor clamps 2 and multiple second conductor clamps 3 are interconnected.

[0051] Grounding clamp 4 is mounted on insulating plate 10 and is connected in sequence to multiple first conductor clamps 2;

[0052] Multiple current transformers 5 are respectively disposed between the first conductor clamp 2 and the second conductor clamp 3;

[0053] Display unit 6, located on housing 1, is used to display the current detected by current transformer 5.

[0054] To address the problem of induced current detection in the metallic sheath of high-voltage cables, this invention provides a solution by installing a current transformer in a cross-connection grounding box and three display units on the secondary side of the current transformer to display the induced current of the high-voltage cable in the cross-connection grounding system. This allows maintenance personnel to monitor the current in the metallic sheath of the high-voltage cable without the need for any tools or opening the front cover of the cross-connection grounding box, ensuring the safe and stable operation of the high-voltage cable.

[0055] This invention monitors high-voltage cables using a current transformer, rather than directly connecting the ammeter in series with the cross-connection grounding circuit. This effectively prevents the cross-connection grounding from opening due to ammeter damage, thus increasing the safety and reliability of the invention. The current transformer measures the high-voltage cable by converting a large primary current into a small secondary current based on the principle of electromagnetic induction. instrument A current transformer consists of a closed iron core and... winding Composition: Its primary winding has very few turns and is connected in series with the circuit whose current needs to be measured. Therefore, it often carries the entire current of the circuit. The secondary winding has more turns and is connected in series with the measuring instrument and protection circuit. When the current transformer is working, its secondary circuit is always closed. Therefore, the impedance of the series coil of the measuring instrument and protection circuit is very small, and the operating state of the current transformer is close to a short circuit, so its risk of damage is relatively small.

[0056] This invention utilizes a display unit installed on the front cover of the cross-connection grounding box to display the secondary current of the current transformer. This design allows maintenance personnel to directly observe the induced current in the metal sheath of the high-voltage cable without opening the box cover during inspections. This avoids exposing electrical equipment and reduces the risk of electric shock for maintenance personnel. Furthermore, it avoids frequent opening of the grounding box cover and sealing rings, reducing the risk of moisture buildup in internal electrical components due to poor sealing, which could affect the insulation of the grounding system and even cause grounding system failures.

[0057] In this embodiment, the insulating plate 10 not only isolates the enclosure 1 from the live parts inside the enclosure, but also installs all the current transformers and clamps inside the enclosure on the insulating plate 10, ensuring that the various parts are insulated from each other and do not affect each other, ensuring the reliability of cross-interconnection grounding, and preventing phase-to-phase short circuit faults.

[0058] In this embodiment, the box 1 includes a main body 11 and a cover plate 12, which are rotatably connected, and a rubber sealing strip 13 is provided on the connection surface between the main body 11 and the cover plate 12.

[0059] The main body 11 and the cover plate 12 are rotatably connected by a hinge 14.

[0060] In this embodiment, rubber sealing strips and hinges are used, which not only meet the requirements of waterproof and dustproof equipment, but also facilitate quick unpacking and inspection by maintenance personnel in the event of a fault, saving unpacking time and improving maintenance efficiency.

[0061] In this embodiment, the plurality of first conductor clamps 2 respectively include an A-phase inner conductor clamp 21, a B-phase inner conductor clamp 22, and a C-phase inner conductor clamp 23.

[0062] Among them, the inner conductor clamp 21 of phase A, the inner conductor clamp 22 of phase B, and the inner conductor clamp 23 of phase C are connected in sequence through the copper busbar 15, and the copper busbar 15 is connected to the grounding clamp 4.

[0063] In this embodiment, an interlayer protector 16 is provided between the A-phase inner conductor clamp 21, the B-phase inner conductor clamp 22, the C-phase inner conductor clamp 23 and the copper busbar 15.

[0064] In this embodiment, the plurality of second conductor clamps 3 include an A-phase outer conductor clamp 31, a B-phase outer conductor clamp 32, and a C-phase outer conductor clamp 33.

[0065] In this embodiment, the inner conductor clamp 21 of phase A is cross-connected with the outer conductor clamp 33 of phase C, the inner conductor clamp 22 of phase B is cross-connected with the outer conductor clamp 31 of phase A, and the inner conductor clamp 23 of phase C is cross-connected with the outer conductor clamp 32 of phase B.

[0066] In this embodiment, the multiple current transformers 5 are respectively a first current transformer 51, a second current transformer 52, and a third current transformer 53. The first current transformer 51 is disposed between the inner conductor clamp 21 and the outer conductor clamp 31 of phase A, the second current transformer 52 is disposed between the inner conductor clamp 22 and the outer conductor clamp 32 of phase B, and the third current transformer 53 is disposed between the inner conductor clamp 23 and the outer conductor clamp 33 of phase C.

[0067] In this embodiment, since the absolute value of the current in the cable sheath should be less than 100A during normal operation, the current transformer can be a 200:5A current transformer.

[0068] In this embodiment, the display unit 6 is an ammeter.

[0069] In this embodiment, the display unit 6 includes a first ammeter 61, a second ammeter 62 and a third ammeter 63, wherein the first ammeter 61 is connected to the first current transformer 51, the second ammeter 62 is connected to the second current transformer 52, and the third ammeter 63 is connected to the third current transformer 53.

[0070] The first, second, and third current transformers measure the grounding current in the inner conductors of phases A, B, and C, respectively, and display the measured current data on the first, second, and third ammeters, enabling maintenance personnel to observe the current in the metal sheath of the high-voltage cable without the aid of other testing tools.

[0071] In this embodiment, the current transformer 5 and the display unit 6 are connected by a copper wire 54, and a heat insulation layer and a flame-retardant material layer are provided on the outside of the copper wire 54.

[0072] In this embodiment, the cross-sectional area of ​​the copper wire 54 is 1.5~3mm². 2 .

[0073] For example, copper wire 54 is 2mm. 2 Soft copper wire.

[0074] The soft copper wire is wrapped with a heat insulation layer and a flame-retardant material layer, which ensures that even if a heat fault occurs inside the box, the connection between the ammeter and the current transformer can be reliable, avoiding the risk of open circuit on the secondary side of the current transformer and increasing the reliability of the equipment.

[0075] Figure 4 This is a structural block diagram of a visualized high-voltage cable cross-grounding interconnection box provided for utility model purposes. Among other things, in... Figure 1 Based on this, the visualized high-voltage cable cross-grounding interconnection box also includes:

[0076] The data acquisition and transmission module 7 is used to remotely transmit the current information acquired by the current transformer to the user.

[0077] In this embodiment, the data acquisition and transmission module 7 includes a communication module using an IoT card and an RS485 communication module.

[0078] In this embodiment, a shielding sleeve is provided on the outer surface of the data acquisition and transmission module 7.

[0079] The data acquisition and transmission module 7 is installed in the same enclosure as the cross-connection cable and copper busbar of the cross-connection grounding box. A shielding shell is installed on the outer layer of the data acquisition and transmission module to isolate the data acquisition and transmission module from the cross-connection cable and copper busbar. The above design not only saves costs, but also ensures that the data acquisition and transmission module can work stably and normally.

[0080] exist Figure 1 In this module, the input / output interface 55 serves as the power interface and data output interface of the data acquisition and transmission module 7. Some interfaces in the input / output interface 55 are also connected to the secondary side of the current transformer to facilitate other tests on the cable, thereby enhancing the practicality of the interface, reducing the number of times the package needs to be opened during daily maintenance, and improving the usability of this utility model.

[0081] Figure 5 A schematic diagram of the structure of a power module provided by this utility model. See also: Figure 5 The visualized high-voltage cable cross-grounding interconnection box may also include:

[0082] The power module 8 includes a power generation unit 81 and an energy storage unit 82. The power generation unit 81 uses renewable energy to charge the energy storage unit 82, and the energy storage unit 82 supplies power to the current transformer 5, the display unit 6, and the data acquisition and transmission module 7.

[0083] In this embodiment, the power generation unit 81 includes a wind power generation unit 811 and a solar power generation unit 812.

[0084] The power generation unit utilizes both wind and solar energy, two clean energy sources, to provide a diversified energy supply around the clock, characterized by high efficiency, stability, and environmental friendliness. The micro-wind generator can still generate electricity under low wind speed conditions, while the solar cells provide power when there is sufficient sunlight. The two complement each other, and when combined with battery energy storage, effectively ensure the continuity and reliability of power supply, improving the stability of equipment operation.

[0085] In this embodiment, the power module 8 also includes a regulator 83, a battery charge / discharge controller 84, and an AC / DC output unit 84.

[0086] Of course, this utility model can also be powered by a 220V AC interface 86. In places such as urban underground utility tunnels where there is 220V AC power and it is not suitable to install micro wind turbines and solar cells, 220V AC power can be used for power supply, or even a current transformer can be used to draw power, thereby reducing the equipment's dependence on power supply and expanding the scope of application of this utility model.

[0087] See you again Figure 4 It also includes monitoring terminal 9, which receives data transmitted by the data acquisition and transmission module, analyzes and compares the received current signals, judges the operating status of the high-voltage cable, and provides reasonable maintenance suggestions to maintenance personnel to help them maintain the cable more effectively. Secondly, the monitoring terminal can also judge cable faults based on data uploaded by the communication module, and combine artificial intelligence and big data to determine the type and location of the fault, thereby improving the work efficiency of maintenance personnel, speeding up fault handling, improving the operating efficiency of the power grid, and reducing economic losses.

[0088] The design concept of this utility model is to improve the ease of operation for maintenance personnel. By adding three current transformers to the cross-connection grounding box and using an ammeter to display the current, the current in the cable sheath can be monitored in real time without opening the cover or using additional measuring tools. This design can significantly improve maintenance efficiency, avoid cumbersome inspection steps, and reduce operational risks.

[0089] This utility model has many advantages such as simple structure, low price and convenient maintenance. It can make up for the shortcomings of the existing cross-interconnection grounding box, and can monitor the induced current in the high-voltage cable in real time, and detect the defects and faults of the high-voltage cable in a timely manner, so as to improve the safety and stability of the power grid.

[0090] This invention monitors high-voltage cables using a current transformer, rather than directly connecting the ammeter in series with the cross-connection grounding circuit. This effectively solves the problem of cross-connection grounding opening caused by ammeter damage, and avoids cross-connection grounding failure due to ammeter damage, thereby increasing the safety and reliability of this invention.

[0091] This invention features data processing and transmission capabilities. It filters and removes noise from the current detected by the current transformer before transmitting it to a monitoring terminal, which records and analyzes the received signals. Through analysis of historical data, the system can generate trend charts to help maintenance personnel identify patterns in current fluctuations within the cable sheath, predict potential electrical faults, and develop reasonable inspection plans, thus saving maintenance costs. Furthermore, when abnormal current occurs in the high-voltage cable sheath (such as excessive or unstable current), the system automatically triggers a fault alarm, alerting maintenance personnel to conduct inspections and improving the stability of the power grid.

[0092] This invention utilizes three ammeters installed on the front cover of the cross-connection grounding box to display the secondary current of the current transformer. This design allows maintenance personnel to directly observe the induced current in the metal sheath of the high-voltage cable without opening the box cover during inspections. This avoids exposing electrical equipment and reduces the risk of electric shock for maintenance personnel. Furthermore, it prevents frequent opening of the grounding box cover and sealing rings, reducing the risk of moisture buildup in internal electrical components due to poor sealing, which could affect the insulation of the grounding system and even cause grounding system failures.

[0093] This utility model adopts a power supply scheme of "micro-wind generator + solar cell + battery + 220V AC power". This design utilizes two clean energy sources, wind and solar, to form a diversified energy supply around the clock, featuring high efficiency, stability, and environmental friendliness. The micro-wind generator can still generate electricity under low wind speed conditions, while the solar cell provides power when there is sufficient sunlight. The two complement each other, and with the addition of a battery for energy storage, the continuity and reliability of power supply are effectively guaranteed, improving the stability of equipment operation. In urban underground utility tunnels or locations where it is inconvenient to install solar cells and micro-wind generators, 220V AC power can be used, or even current transformers can be used for power supply, reducing the equipment's dependence on power sources and expanding the applicability of this utility model.

[0094] In summary, this utility model is low in cost, easy to install, and widely applicable. It not only has the functions of a common cross-interconnection grounding box, but also has the ability to monitor the current in the metal sheath of the cable in real time, provide early warning of faults, help maintenance personnel to discover potential defects in advance, eliminate them in time, improve the reliability of power transmission equipment, and reduce the workload of maintenance personnel.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A visualisation of a high voltage cable cross-bonding joint box, characterised in that, include: The enclosure contains an insulating board. Multiple first conductor clamps are mounted on an insulating plate for connecting to the first external conductor; Multiple second conductor clamps are disposed on an insulating plate for connecting a second external conductor; wherein, multiple first conductor clamps are interconnected with multiple second conductor clamps. A grounding clamp is mounted on an insulating plate and is sequentially connected to multiple first conductor clamps. Multiple current transformers are respectively installed between the first conductor clamp and the second conductor clamp; The display unit, located on the enclosure, is used to display the current detected by the current transformer; The enclosure includes a main body and a cover plate, which are rotatably connected, and the main body is provided with a rubber sealing strip at the connection surface with the cover plate; The display unit is an ammeter; The current transformer is connected to the display unit by a copper wire, and the outside of the copper wire is provided with a heat insulation layer and a flame-retardant material layer. Also includes: The data acquisition and transmission module is used to remotely transmit the current information acquired by the current transformer to the user. The data acquisition and transmission module includes a communication module using an IoT card and an RS485 communication module; The outer surface of the data acquisition and transmission module is equipped with a shielding sleeve; It also includes a power module, which includes a power generation unit and an energy storage unit. The power generation unit uses renewable energy to charge the energy storage unit, and the energy storage unit supplies power to the current transformer, the display unit, and the data acquisition and transmission module. The power generation unit includes wind power generation unit and solar power generation unit.

2. A visualisation high voltage cable cross-bonding joint box according to claim 1, characterised in that The cross-sectional area of the copper wire is 1.5-3 mm 2 .

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