CN218770605U - Switch cabinet - Google Patents

Abstract

The application discloses a switch cabinet, which comprises a switch cabinet body, an acquisition module and an upper computer, wherein the acquisition module is arranged inside the switch cabinet body and used for collecting data of the switch cabinet body; the upper computer is arranged in a split manner with the switch cabinet body and is electrically connected with the acquisition module and used for analyzing and diagnosing the data collected by the acquisition module, so that the on-line monitoring function of the switch cabinet can be realized only by slightly changing the existing switch cabinet.

Description

Switch cabinet

Technical Field

The utility model relates to a cubical switchboard technical field, in particular to cubical switchboard.

Background

At present, the conventional online monitoring and intelligent diagnosis technology for high and low voltage switch cabinets becomes an important means for fault diagnosis and prediction of switch cabinets, and conventionally manufactured switch cabinets are generally not provided with state monitoring analysis devices, so that the conventional switch cabinets are generally required to be modified and provided with corresponding monitoring analysis devices, but because complex electrical connection exists among various electrical components in the switch cabinets, the modification of any component of the switch cabinets can influence the functions of other components, and therefore how to acquire internal state data is a problem in the industry at present.

SUMMERY OF THE UTILITY MODEL

In view of the foregoing prior art, an object of the utility model is to provide a switch cabinet for the switch cabinet possesses the on-line measuring function, and changes few to the inside structure of switch cabinet.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a switchgear cabinet comprising: a switch cabinet body; the acquisition module is arranged inside the switch cabinet body and used for collecting data of the switch cabinet body; and the upper computer is arranged in a split manner with the switch cabinet body, is electrically connected with the acquisition module and is used for analyzing and diagnosing the data collected by the acquisition module.

In some embodiments of the present application, the upper computer is provided with an interface, and the acquisition module is connected to the interface.

In some embodiments of the present application, a circuit breaker and an anti-tripping control panel are disposed inside the switch cabinet body; the acquisition module comprises a current acquisition unit, the current acquisition unit is integrated on the anti-tripping control panel, and the opening coil current, the closing coil current, the energy storage motor current and the motor current of the chassis of the circuit breaker are connected into the current acquisition unit.

In some embodiments of the present application, an angular displacement sensor is disposed on a main shaft of the circuit breaker, and the angular displacement sensor is connected to the current collection unit.

In some embodiments of the present application, a bus bar and a cable are further disposed inside the switch cabinet body; the acquisition module still includes temperature detecting element, the arm that touches of circuit breaker the contact of circuit breaker the overlap joint department of generating line reaches the overlap joint department of cable is provided with respectively temperature detecting element.

In some embodiments of the present application, a low-pressure chamber is provided inside the switch cabinet body, and the interface includes a first interface; the switch cabinet further comprises a wireless receiving module, the wireless receiving module is electrically connected with the first interface, the wireless receiving module is arranged in the low-voltage chamber, and the current collecting unit and the temperature detecting unit are both in wireless connection with the wireless receiving module.

In some embodiments of the present application, an earthing switch motor is further disposed inside the switch cabinet body, an earthing switch current sensor is disposed on the earthing switch motor, and a main loop current sensor is disposed on a main loop current of the circuit breaker; the switch cabinet further comprises an expansion module, the expansion module is arranged in the low-voltage chamber, the expansion module is connected with the wireless receiving module in series, and the grounding switch current sensor and the main loop current sensor are connected to the expansion module.

In some embodiments of the present application, the expansion module further includes an opening amount detection unit for detecting the number of times of opening and closing of the circuit breaker, and the opening amount detection unit is electrically connected to a loop of the circuit breaker through a wire to acquire a current signal.

In some embodiments of the present application, a circuit breaker and a grounding switch are disposed inside the switch cabinet body; the interface further comprises a second interface; the acquisition module comprises a visual detection unit, the visual detection unit comprises a first camera for monitoring the working state of a circuit breaker in the switch cabinet body and a second camera for monitoring the opening and closing state of a grounding switch in the switch cabinet body, and the first camera and the second camera are both connected to the second interface; the interface further comprises a third interface; the acquisition module comprises an partial discharge monitoring unit, the partial discharge monitoring unit is arranged on the switch cabinet body, and the partial discharge monitoring unit is connected with the third interface; the switch cabinet body comprises a bus chamber; the interface further comprises a fourth interface; the collection module comprises an arc light collection unit, the arc light collection unit is installed in a bus chamber of the switch cabinet body, and the arc light collection unit is connected with the fourth interface.

In some embodiments of the application, the switch cabinet further comprises a human-computer interaction device, the human-computer interaction device is connected with the upper computer through a network cable, and the upper computer and the human-computer interaction device can mutually transmit data; the upper computer is arranged around the outer side of the switch cabinet body.

Has the advantages that: the utility model provides a cubical switchboard includes cubical switchboard body and host computer, and the host computer sets up with cubical switchboard body components of a whole that can function independently, the inside collection module that is provided with of cubical switchboard body, and the electricity is connected between collection module and the host computer, consequently, only need make less change to current cubical switchboard, can realize the online monitoring function of cubical switchboard.

Drawings

Fig. 1 is a schematic structural view of the switchgear cabinet with the upper computer removed.

Fig. 2 is a first schematic connection structure of the switch cabinet.

Fig. 3 is a schematic diagram of a connection structure of the switch cabinet.

Fig. 4 is a schematic block diagram of the connection of the circuit breaker.

Description of the main element symbols: 10. a switch cabinet body; 101. a bus chamber; 102. a low pressure chamber; 103. a circuit breaker chamber; 104. a cable chamber; 20. a circuit breaker; 30. a wireless receiving module; 41. an anti-bouncing control panel; 411. an external interface; 412. an expansion interface; 42. a switching-off coil current sensor; 43. a closing coil current sensor; 44. an energy storage motor current sensor; 45. a chassis vehicle motor current sensor; 46. an angular displacement sensor; 50. an expansion module; 51. a primary loop current sensor; 52. a ground switch current sensor; 53. an input amount detection unit; 54. an arc light collection unit; 55. a partial discharge monitoring unit; 56. a visualization detection unit; 61. a wireless temperature sensor; 70. an upper computer; 80. a bus bar; 90. provided is a human-computer interaction device.

Detailed Description

The utility model provides a switch cabinet, for making the utility model discloses a purpose, technical scheme and effect are clearer, make clear and definite, and it is right that the following refers to the attached drawing and the embodiment of lifting the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of the invention.

In the description of the present invention, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but 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 thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other suitable relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 to 3, a switch cabinet includes a switch cabinet body 10, an acquisition module and an upper computer 70, wherein the acquisition module is disposed inside the switch cabinet body 10 and is used for collecting data of the switch cabinet body 10; the upper computer 70 is arranged separately from the switch cabinet body 10 and is electrically connected with the acquisition module, and is used for analyzing and diagnosing data collected by the acquisition module, so that the data of the switch cabinet body 10 is collected by the acquisition module and uploaded to the upper computer 70, and then the analysis and diagnosis are carried out by the upper computer 70, and the on-line detection function of the switch cabinet is realized.

The upper computer 70 and the switch cabinet body 10 are arranged in a split mode, and the upper computer 70 is arranged on the outer side of the switch cabinet body 10, so that the switch cabinet can be monitored on line only by slightly changing the existing switch cabinet.

In detail, the host computer 70 is arranged around the outside of the switch cabinet body 10, so that the host computer 70 and the switch cabinet body 10 are independent main bodies except for the electric wire and the network cable which are used for connection, and therefore, the switch cabinet body 10 does not need to be improved excessively, and online detection of the switch cabinet can be achieved. In another embodiment, the upper computer 70 is fixed outside the top surface of the switch cabinet body 10; or the upper computer 70 is fixed on the outer side of the side wall of the switch cabinet body 10.

In one embodiment, the upper computer 70 is provided with an interface, and the collection module is connected to the interface, that is, the collection module is connected to a corresponding interface on the upper computer 70 through a network cable or wireless connection, so as to connect the collection module and the upper computer 70.

Referring to fig. 1, specifically, a circuit breaker chamber 103, a low voltage chamber 102, a cable chamber 104 and a bus bar chamber 101 are provided inside a switchgear body 10; the breaker chamber 103 is provided with the breaker 20 and the trip prevention panel 41, the low-voltage chamber 102 is provided with a grounding switch and an insulator for connecting a ground wire, the bus chamber 101 is provided with the bus 80, and the cable is provided in the cable chamber 104. The bus 80 is connected to the contact arm of the circuit breaker 20, the ground switch is connected to the ground terminal of the circuit breaker 20 by an electric wire, and the electric wire is fixed to the switch cabinet body 10 through an insulator.

Referring to fig. 1, 2 and 4, in some embodiments, the inside of the switch cabinet body 10 is provided with a circuit breaker 20 and an anti-trip control board 41; the acquisition module comprises a current acquisition unit which is integrated on the anti-tripping control panel 41, and the opening coil current, the closing coil current, the energy storage motor current of the circuit breaker 20 and the motor current of the chassis are connected into the current acquisition unit so as to realize the collection of the current signals of the circuit breaker 20. The current acquisition unit is integrated on the anti-tripping control panel 41, so that the cost is saved, and the power failure time caused by modification is shortened.

In detail, the anti-tripping control board 41 is provided with an external interface 411, the opening coil current sensor 42, the closing coil current sensor 43 and the energy storage motor current sensor 44 of the circuit breaker 20 are connected to the corresponding external interface 411, and then the external interface 411 is electrically connected with the current collecting unit. The anti-jump control board 41 further includes a plurality of extension interfaces 412, and the chassis motor current sensor 45 is connected to the current collection unit through the extension interfaces 412 to collect the chassis motor current.

The current collector is preferably, but not limited to, an on-board hall current sensor, the current collecting unit comprises 4 on-board hall current sensors, the 4 on-board hall current sensors are respectively connected with three external interfaces 411 for accessing the opening coil current, the closing coil current and the energy storage motor current and an expansion interface 412 for accessing the chassis vehicle motor current, and accordingly collect the opening coil current, the closing coil current, the energy storage motor current and the chassis vehicle motor current.

An angular displacement sensor 46 is arranged on a main shaft of the circuit breaker 20, and the angular displacement sensor 46 is connected with a current acquisition unit. In detail, the expansion interface 412 is connected to the angular displacement sensor 46 for detecting the rotation angle of the main shaft of the circuit breaker 20, so as to realize the electrical connection between the angular displacement sensor 46 for detecting the rotation angle of the main shaft of the circuit breaker 20 and the current collecting unit, where the current collecting unit includes an analog-digital processing unit and a processor, and the analog-digital processing unit converts the analog voltage signal collected by the angular displacement sensor 46 into a digital signal. The data converted from analog to digital is input to the processor, and the processor processes the data. For example, the processor records current-time current waveforms of closing and opening coils in the whole closing and opening processes through a wave recording function, extracts algorithm analysis according to the current waveform characteristic points, and stores characteristic values of maximum current of the closing coils, minimum current of the closing coils, electrified time of the closing coils, average action current, maximum operation current, maximum energy storage motor current, chassis vehicle shake-in and shake-out time, maximum chassis vehicle motor current and the like, and the extracted characteristic values. For another example, the processor records the main shaft angle waveform of the whole closing process through a wave recording function, and converts the angle and the waveform into a stroke waveform through an angle-stroke conversion model; and then, carrying out characteristic point extraction algorithm analysis on the stroke waveform, extracting characteristic values for mechanical characteristic analysis, such as total stroke, maximum stroke, minimum stroke, closing speed and the like, and storing the extracted characteristic values.

The inside of cubical switchboard body 10 is equipped with low-voltage chamber 102, and the interface of host computer 70 includes first interface, and the cubical switchboard still includes wireless receiving module 30, and wireless receiving module 30 is connected with first interface electricity, and current acquisition unit and wireless receiving module 30 wireless connection, wireless receiving module 30 set up in low-voltage chamber 102 to shorten the distance between wireless receiving module 30 and the current acquisition unit, improve the intensity of transfer signal between the two.

Since the current collection unit is electrically connected to the upper computer 70 through the wireless receiving module 30, the current waveform, the stroke waveform and the characteristic value stored in the current collection unit can be sent to the wireless receiving module 30. The processing unit stores the waveform data into a standard COMTRADE format, stores the characteristic value data into a report, and uploads the report to the fault diagnosis system of the upper computer 70 through the internet access of the wireless receiving module 30 by the protocol of IEC 103. The fault diagnosis system of the upper computer 70 monitors, prewarns faults and analyzes the service life of the circuit breaker 20 according to the data. The wireless receiving module 30 and the fault diagnosis system of the upper computer 70 can transmit signals in a wired communication mode. The wireless receiving module 30 is in wireless communication connection with the current collecting unit, and does not need electric wire connection, so that primary and secondary isolation is ensured, and safety performance is improved.

In another embodiment, the switch cabinet further includes a wireless receiving module 30, the first interface is a wireless interface, the wireless receiving module 30 is connected to the first interface, and the current collecting unit is wirelessly connected to the wireless receiving module 30, so that connection of the upper computer 70 of the current collecting unit is realized, and the wireless receiving module 30 can be arranged on the upper computer 70 or inside the switch cabinet body 10.

A grounding switch motor is also arranged in the switch cabinet body 10, a grounding switch current sensor 52 is arranged on the grounding switch motor, and a main loop current sensor 51 is arranged on the main loop current of the circuit breaker 20; the switch cabinet further comprises an extension module 50, the extension module 50 is connected with the wireless receiving module 30 in series, and the grounding switch current sensor 52 and the main loop current sensor 51 are both connected to the extension module 50. The wireless receiving module 30 processes and analyzes data collected by the main loop current sensor 51 and the grounding switch current sensor 52, generates a current oscillogram, extracts characteristic values of the circuit breaker 20 such as the cut-off current, the arcing time, the electric service life, the grounding switch motor live time, the maximum grounding switch motor current and the like, and uploads the processed oscillogram data and the characteristic value data to the fault diagnosis system of the upper computer 70.

The expansion module 50 is an integrated module with a housing, the main loop current sensor 51 and the ground switch current sensor 52 may be located outside the expansion module 50 and connected to the interface of the expansion module 50 through a connection wire, and of course, the main loop current sensor 51 and the ground switch current sensor 52 may also be located inside the expansion module 50. The main loop current sensor 51 and the earthing switch current sensor 52 are open hall current sensors, and the open hall current sensors are used for accessing corresponding current amounts to acquire main loop current and acquire earthing switch motor current without modifying secondary wiring.

In the embodiment described above in which the wireless receiving module 30 is disposed within the low pressure chamber 102, the expansion module 50 is disposed within the low pressure chamber 102.

The expansion module 50 further includes an opening amount detection unit 53 for detecting the number of times the circuit breaker 20 is opened and closed, and the opening amount detection unit 53 is connected to the circuit of the circuit breaker 20 through a wire to obtain a current signal. In detail, the input detection unit 53 includes an input detection interface, a voltage dividing circuit and an input sensor, the input detection interface is connected to the circuit of the circuit breaker 20 through a wire to obtain a current signal, the input sensor is disposed inside the expansion module 50, and the wireless receiving module 30 can be used for analyzing the switching value warning signals such as the open/close circuit and the open/close circuit of the circuit breaker 20 by receiving the input information collected by the optical coupling sensor. The opening sensor is an optical coupling sensor and is arranged on the expansion circuit board, so that photoelectric isolation can be realized.

In some embodiments, the interior of the switchgear body 10 is also provided with a bus 80 and a cable; the acquisition module further comprises a temperature detection unit, and the contact arm of the circuit breaker 20, the contact of the circuit breaker 20, the lap joint of the bus 80 and the lap joint of the cable are respectively provided with the temperature detection unit. Wherein, set up respectively at circuit breaker 20 contact department, contact arm department, generating line 80 overlap joint, cable overlap joint and be used for monitoring circuit breaker 20 contact, contact a plurality of wireless temperature sensor 61 of the temperature condition of arm, generating line 80 overlap joint, cable overlap joint, wireless receiving module 30 carries out wireless communication with wireless temperature sensor 61 and is connected to the temperature data that each wireless temperature sensor 61 gathered is received. Wherein wireless temperature sensor 61 can directly be embedded into the arm that touches of circuit breaker 20, forms intelligence and touches the arm, and the function that intelligence touched the arm includes from power supply and wireless connection, and the maintenance-free guarantees safety, long-term work steadily. The wireless receiving module 30 and the wireless temperature sensors 61 can be connected in a communication manner such as zigbee and 2.4G communication frequency band.

A circuit breaker 20 and a grounding switch are arranged inside the switch cabinet body 10; the interface further comprises a second interface; the acquisition module comprises a visual detection unit 56, and the visual detection unit 56 is installed in the switch cabinet body 10 to acquire working state pictures in the switch cabinet body 10 and transmit collected picture data to the fault diagnosis system. Wherein, through the setting of visual detecting element 56 to in uploading to host computer 70, the staff of control cubical switchboard body 10 operating condition can be in station end or monitoring center configuration monitoring host computer and be used for showing the control picture, and then observes the behavior in the cubical switchboard body 10 through the picture directly perceivedly.

The visual detection unit 56 comprises a first camera for monitoring the working state of the circuit breaker 20 in the switch cabinet body 10 and a second camera for monitoring the switching-on/off state of the grounding switch in the switch cabinet body 10, and the first camera and the second camera are both connected to the second interface.

In detail, the chassis truck and ground switch position monitoring function of the circuit breaker 20 mainly realizes the visual monitoring of the chassis truck shaking-in and shaking-out state and the ground switch on-off state of the switch cabinet body 10, the first camera and the second camera are installed in the switch cabinet body 10, the first camera and the second camera are respectively installed at the proper positions of the handcart chamber of the switch cabinet body 10 and the cable chamber 104 of the ground switch, the visual monitoring of the chassis truck shaking-in and shaking-out and ground switch on-off process of the switch cabinet body 10 is realized, the visual detection unit 56 is connected to the upper computer 70 through a network cable, and a monitoring host can be configured at a station end or a monitoring center for displaying monitoring pictures.

Preferably, the first camera and the second camera both support a mobile detection function, the cameras have an LED light supplement function, and support an RTSP remote call instruction, and the third-party system can directly read and call a video image from the upper computer 70.

The interface further comprises a third interface; the acquisition module comprises an partial discharge monitoring unit 55, and the partial discharge monitoring unit 55 is installed on the switch cabinet body 10 and used for detecting electric signal signals around the switch cabinet body 10 and transmitting the collected electric signal data to the fault diagnosis system. The partial discharge sensor in the partial discharge monitoring unit 55 can detect the discharge condition in the switch cabinet body 10, for example, when discharge occurs in the switch cabinet body 10, free electrons exist around the position of the grounding wire in the switch cabinet body 10, and the partial discharge sensor determines the electrical leakage condition of the switch cabinet body 10 by detecting the number of the electrons.

In detail, the partial discharge monitoring unit 55 is arranged on the switch cabinet body 10, and the partial discharge monitoring unit 55 is connected with the third interface; the partial discharge monitoring unit 55 includes one of an ultrasonic partial discharge sensor and a ground-electric-wave partial discharge sensor.

The switch cabinet body 10 includes a bus bar room 101; the interface further comprises a fourth interface; the acquisition module includes an arc acquisition unit 54 to acquire arc signals within the switchgear body 10 and transmit the collected arc signal data to a fault diagnosis system. When a fault exists, the fault is conveniently and quickly searched and processed and power supply is recovered according to the signal of the arc light acquisition unit 54. The arc collection unit 54 is installed in the busbar compartment 101 of the switchgear body 10, and the arc collection unit 54 is connected to the fourth interface.

The arc collection unit 54 is installed in the switch cabinet body 10, wherein, in combination with the current collection unit, the current increment detected by the current collection unit and the arc light detected by the arc collection unit 54 are used as two criteria for diagnosing the fault of the switch cabinet body 10, the system sends a tripping command when the arc light and the current increment are detected simultaneously, and sends an alarm signal when only the arc light or the current increment is detected without sending the tripping command. By detecting the arc light signal and adopting the dual criteria of detecting the arc light signal and overcurrent locking, the switch cabinet body 10 can realize continuous self-checking in work, and the safety and the reliability of the switch cabinet body 10 are fully ensured. For example: the protection device has the function of protecting the failure of the circuit breaker 20, and can send a tripping command to trip the previous circuit breaker 20 when the main circuit breaker 20 fails, so that the reliability of the protection system is improved. Another example is: by the arc light and current discrimination, each section of the bus 80 can be selectively protected, and the method is suitable for various operation modes, and the protection does not need to be switched under various operation modes.

In an embodiment, the wireless receiving module 30, the visual detection unit 56, the partial discharge monitoring unit 55 and the arc light collecting unit 54 are all connected to the corresponding interface of the upper computer 70 through network cables.

Referring to fig. 3, in some embodiments, the switch cabinet further includes a human-computer interaction device 90, the human-computer interaction device 90 is connected to the upper computer 70, and the upper computer 70 and the human-computer interaction device 90 can transmit data to each other; so that the diagnosis result can be transmitted to the human-computer interaction device 90, and an input end for inputting the control command fed back to the upper computer 70 is arranged on the human-computer interaction device 90. The man-machine interaction device 90 is connected with the upper computer 70 through a network cable.

It should be understood that equivalent substitutions or changes can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept thereof, and all such changes or substitutions should be considered as the protection scope of the present invention.

Claims (8)

1. A switchgear, comprising:

a switch cabinet body;

the acquisition module is arranged inside the switch cabinet body and used for collecting data of the switch cabinet body;

the upper computer is arranged on the outer side of the switch cabinet body and is electrically connected with the acquisition module and used for analyzing and diagnosing the data collected by the acquisition module; the upper computer is provided with an interface, and the acquisition module is connected with the interface;

a circuit breaker and a grounding switch are arranged inside the switch cabinet body; the interface further comprises a second interface; the acquisition module comprises a visual detection unit, the visual detection unit comprises a first camera for monitoring the working state of a circuit breaker in the switch cabinet body and a second camera for monitoring the opening and closing state of a grounding switch in the switch cabinet body, and the first camera and the second camera are both connected to the second interface;

the interface further comprises a third interface; the acquisition module comprises an partial discharge monitoring unit, the partial discharge monitoring unit is arranged on the switch cabinet body, and the partial discharge monitoring unit is connected with the third interface;

the switch cabinet body comprises a bus chamber; the interface further comprises a fourth interface; the collection module comprises an arc light collection unit, the arc light collection unit is installed in a bus chamber of the switch cabinet body, and the arc light collection unit is connected with the fourth interface.

2. The switch cabinet according to claim 1, wherein the switch cabinet body is internally provided with a circuit breaker and an anti-tripping control panel;

the acquisition module comprises a current acquisition unit, the current acquisition unit is integrated on the anti-tripping control panel, and the opening coil current, the closing coil current, the energy storage motor current and the motor current of the chassis of the circuit breaker are connected into the current acquisition unit.

3. The switchgear cabinet as claimed in claim 2, wherein an angular displacement sensor is provided on the main shaft of the circuit breaker, and the angular displacement sensor is connected with the current collection unit.

4. The switch cabinet according to claim 2 or 3, characterized in that a bus bar and a cable are further arranged inside the switch cabinet body;

the acquisition module still includes temperature detecting element, the arm that touches of circuit breaker the contact of circuit breaker the lap-joint of generating line reaches the lap-joint of cable is provided with respectively temperature detecting element.

5. The switchgear cabinet according to claim 4, wherein the switchgear cabinet body is provided with a low pressure chamber inside, and the interface comprises a first interface;

the switch cabinet further comprises a wireless receiving module, the wireless receiving module is electrically connected with the first interface, the wireless receiving module is arranged in the low-voltage chamber, and the current collecting unit and the temperature detecting unit are both in wireless connection with the wireless receiving module.

6. The switch cabinet according to claim 5, wherein an earthing switch motor is further arranged inside the switch cabinet body, an earthing switch current sensor is arranged on the earthing switch motor, and a main loop current sensor is arranged on a main loop current of the circuit breaker;

the switch cabinet further comprises an extension module, the extension module is arranged in the low-voltage chamber and connected with the wireless receiving module in series, and the grounding switch current sensor and the main loop current sensor are connected to the extension module.

7. The switch cabinet according to claim 6, wherein the expansion module further comprises an opening amount detection unit for detecting the opening and closing times of the circuit breaker, and the opening amount detection unit is electrically connected with the circuit of the circuit breaker through a wire to obtain a current signal.

8. The switch cabinet according to claim 1, further comprising a human-computer interaction device, wherein the human-computer interaction device is connected with the upper computer through a network cable, and data can be transmitted between the upper computer and the human-computer interaction device.

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