A power distribution cabinet fault detection device

Abstract

The application relates to the technical field of power distribution cabinet detection, and discloses a power distribution cabinet fault detection device, which comprises an electric data detection host, and an automatic evacuation protection module is arranged at the detection end of the electric data detection host; the automatic evacuation protection module is configured to trigger a tail-off evacuation mechanism to realize self-protection of the detection device when detecting that each switch connection end in the power distribution cabinet has abnormal electric parameters; the automatic evacuation protection module comprises a power pull line box, a high-pressure gas tank, a piston evacuation column and a wiring terminal; the wiring terminal and the electric data detection host are electrically connected through a measuring wire, and each wiring terminal of a switch to be monitored is connected with an independent wiring terminal; the automatic evacuation protection module is arranged, and the application can actively trigger the tail-off evacuation mechanism within millisecond-level time when the electric data detection host detects abnormal electric parameters (such as short-circuit current, overvoltage and the like).

Description

Technical Field

[0001] This invention relates to the field of power distribution cabinet testing, and more specifically, to a power distribution cabinet fault detection device. Background Technology

[0002] In the operation and maintenance of power systems, the distribution cabinet serves as the core hub for power distribution, and the stability of its internal switch status is crucial. To monitor the operating status of the distribution cabinet in real time, temporary detection devices are typically installed at each switch connection terminal within the cabinet. These devices transmit electrical parameters such as voltage, current, and frequency to an external electrical data monitoring host for analysis via measuring wires.

[0003] When a sudden and severe fault occurs inside the distribution cabinet, such as a short circuit, grounding fault, or lightning surge, extremely high arc voltage, huge short-circuit current, and violent shock waves are often generated instantaneously at the switch connection terminals. Because existing detection devices typically use fixed connection methods (such as screw fastening or ordinary plug-in connections) to connect to the switch terminals, the detection circuit cannot be disconnected in time once such extreme faults occur. This not only causes the expensive electrical data detection host to burn out due to excessive voltage or current, resulting in serious economic losses, but also the high-temperature arc may ignite external equipment along the detection wires. Therefore, we propose a distribution cabinet fault detection device. Summary of the Invention

[0004] This invention provides a power distribution cabinet fault detection device, which solves the technical problem in related technologies where, once the above-mentioned extreme faults occur, the detection line cannot be disconnected in time. This not only causes the expensive electrical data detection host to burn out due to excessive voltage or current, resulting in serious economic losses, but also the technical problem that high-temperature electric arcs may ignite external equipment along the detection wires.

[0005] The present invention provides a power distribution cabinet fault detection device, comprising: an electrical data detection host, wherein an automatic evacuation protection module is provided in the detection end direction of the electrical data detection host; The automatic evacuation protection module is configured to trigger the tail-cutting evacuation mechanism to achieve self-protection of the detection device when abnormal electrical parameters are detected at each switch connection terminal in the distribution cabinet. The automatic evacuation protection module includes a power cable box, a high-pressure gas tank, a piston cable release post, and wiring terminals; The wiring terminals are electrically connected to the electrical data detection host via measuring wires, and each switch to be monitored has a corresponding independent wiring terminal. The ends of the measuring leads and the terminals adopt a molded plug-in structure to achieve a detachable electrical connection; The power cable box is fixedly installed at a preset position on the inner wall of the distribution cabinet along the direction of the measuring wire; The high-pressure gas tank and piston retraction post are both integrated and installed inside the power cable box. A multi-way control valve connects the high-pressure gas tank to the piston retraction column to achieve a gas passage connection. When the electrical data detection host detects an abnormal electrical parameter signal, it controls the corresponding piston pull-out column to perform an action through the multi-way control valve. Under the impact of the high-pressure gas released from the high-pressure gas tank, the piston retraction column generates a rapid linear motion, pulling the corresponding measuring wire and the terminal to achieve physical separation, thus completing the tail-breaking retraction protection action.

[0006] Furthermore, the electrical data detection host is an integrated intelligent detection device, and it includes various instruments with different functions, alarm modules, and data recording modules. Each terminal is connected to multiple measuring wires with different detection functions, and the same terminal can detect different data from the switch at the same time.

[0007] Furthermore, the side wall of the power cable box is provided with multiple cable trays, each cable tray corresponding to a row of switches in the distribution cabinet, for the neat routing of measuring wires. The cable trays are fixed in the distribution cabinet, and the cable trays have arrays of through holes. The ends of the measuring wires pass through the through holes and connect to the terminals.

[0008] Furthermore, the wiring terminal includes a U-shaped terminal head and an extension plate. The extension plate is fixed below the U-shaped terminal head. Multiple opposing conductive plates are fixedly arranged on the inner wall of the U-shaped terminal head. Each conductive plate represents a detection function. The U-shaped terminal head is connected to the wiring screw of the switch in the distribution cabinet, and the multiple conductive plates are in contact with the wiring screw to conduct electricity.

[0009] Furthermore, the front wall array of the extension plate has insertion slots, and a conductive head is fixed at the top of each insertion slot. Several conductive heads correspond one-to-one with several conductive sheets, and the conductive heads and conductive sheets are electrically connected.

[0010] Furthermore, the slot has a sliding connector inside, and each connector is connected to a measuring wire. The connector and the conductive head form an engaging structure and are in contact with each other to form a conductive structure. Each connector is used to detect one type of data.

[0011] Furthermore, a limit piece is fixedly installed on the front of the plug slot to block the plug. After the electrical data detection host detects abnormal data of the corresponding switch, it pulls the plug on the corresponding terminal out of the plug slot through the operation of the corresponding piston wire withdrawal column. When the plug is subjected to tension, the limit piece will break off, completing the rapid separation.

[0012] Furthermore, the power cable box has an independent power chamber and a valve body chamber inside. Several piston wire release posts are fixed in the independent power chamber. Each piston wire release post corresponds to all the measuring wires on a terminal block. A piston component is slidably arranged inside the piston wire release post.

[0013] Furthermore, a guide post is vertically erected inside the piston retraction column. The guide post passes through the piston component and forms a sliding connection. A pull wire is fixedly connected to the lower wall of the piston component, and the pull wire is connected to the corresponding measuring lead wire group.

[0014] Furthermore, a protective box is fixedly installed inside the power independent chamber. The high-pressure gas tank is fixed in the protective box, and the multi-way control valve is fixedly installed in the valve body chamber. The multi-way control valve is controlled by the system. The high-pressure gas in the high-pressure gas tank is controlled by the multi-way control valve to rush into the corresponding piston wire pull column, push the piston to move, and pull the wire.

[0015] The beneficial effects of this invention are as follows: This invention, by incorporating an automatic evacuation protection module, can proactively trigger a tail-cutting evacuation mechanism within milliseconds of the electrical data detection host detecting abnormal electrical parameters (such as short-circuit current, overvoltage, etc.). This "proactive defense" mechanism changes the traditional situation where detection devices passively withstand fault impacts, effectively preventing the detection equipment from being broken down or burned by high voltage at the moment of a fault. By using a high-pressure gas cylinder to drive a piston to withdraw the lead wire, an instantaneous burst of force is generated, enabling extremely rapid physical separation of the measuring lead from the terminal. This gas-powered mechanical separation method offers fast response and reliable operation, ensuring that the electrical connection is severed before damage from electric arcs or shock waves occurs, thus greatly improving system safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the power cable box structure of the present invention; Figure 3 This is the invention Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the terminal block structure of the present invention; Figure 5 This is a schematic diagram of a partial internal structure of the power cable box of the present invention; Figure 6 This is a schematic diagram of the internal left view of the power cable box of the present invention; Figure 7 This is a schematic diagram of the initial position structure of the piston component of the present invention; Figure 8 This is a schematic diagram of the piston component displacement end structure of the present invention; Figure 9 This is a schematic diagram of the internal structure of the piston derailment column of the present invention.

[0017] In the diagram: 11. Electrical data detection host; 2. Automatic withdrawal protection module; 21. Power cable box; 22. Cable routing box; 23. Terminal block; 231. U-shaped terminal head; 232. Conductive sheet; 233. Extension plate; 234. Plug slot; 235. Conductive head; 236. Limiting plate; 237. Plug connector; 24. Wire hole; 25. Measuring wire; 26. Power independent chamber; 27. Protective box; 28. Valve body chamber; 29. ​​Multi-way control valve; 31. High-pressure gas tank; 32. Pull wire; 33. Piston wire release post; 34. Piston component; 35. Guide post. Detailed Implementation

[0018] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0019] like Figures 1-9 As shown, a power distribution cabinet fault detection device includes: an electrical data detection host 11, and an automatic evacuation protection module 2 is provided in the detection end direction of the electrical data detection host 11. Automatic evacuation protection module 2 is configured to trigger the tail-cutting evacuation mechanism to achieve self-protection of the detection device when abnormal electrical parameters are detected at each switch connection terminal in the distribution cabinet. Automatic evacuation protection module 2 includes a power cable box 21, a high-pressure gas tank 31, a piston cable release post 33, and a terminal block 23; The terminal block 23 is electrically connected to the electrical data detection host 11 through the measuring wire 25. Each terminal block of the switch to be monitored is connected to an independent terminal block 23. The end of the measuring lead 25 and the terminal 23 adopt a molded plug-in structure to achieve a detachable electrical connection; The power cable box 21 is fixedly installed at a preset position on the inner wall of the distribution cabinet along the routing direction of the measuring wire 25; The high-pressure gas tank 31 and the piston wire release column 33 are both integrated and installed in the internal cavity of the power cable box 21; The high-pressure gas tank 31 and the piston retraction column 33 are connected by a multi-way control valve 29 to achieve a gas passage connection. When the electrical data detection host 11 detects an abnormal electrical parameter signal, it controls the corresponding piston retraction column 33 to perform an action through the multi-way control valve 29. Under the impact of the high-pressure gas released from the high-pressure gas tank 31, the piston retraction column 33 generates a rapid linear motion, pulling the corresponding measuring wire 25 and the terminal 23 to achieve physical separation, thus completing the tail-breaking retraction protection action.

[0020] The electrical data detection host 11 is an integrated intelligent detection device, and the electrical data detection host 11 includes various instruments with different functions, alarm modules and data recording modules. Each terminal 23 is connected to multiple measuring wires 25 with different detection functions. The same terminal 23 can detect different data of the switch at the same time.

[0021] The side wall of the power cable box 21 is provided with multiple cable trays 22, each cable tray 22 corresponding to a row of switches in the distribution cabinet, for the neat routing of the measuring wires 25. The cable trays 22 are fixed in the distribution cabinet, and the cable trays 22 have arrayed wire holes 24. The end of the measuring wire 25 passes through the wire holes 24 and connects to the terminal block 23.

[0022] The terminal block 23 includes a U-shaped terminal head 231 and an extension plate 233. The extension plate 233 is fixed below the U-shaped terminal head 231. Multiple opposing conductive pieces 232 are fixedly arranged on the inner wall of the U-shaped terminal head 231. Each conductive piece 232 represents a detection function. The U-shaped terminal head 231 is connected to the wiring screw of the switch in the distribution cabinet. The multiple conductive pieces 232 are in contact with the wiring screw and conduct electricity.

[0023] The front wall array of the extension plate 233 has insertion slots 234, and a conductive head 235 is fixed on the top of each insertion slot 234. Several conductive heads 235 correspond one-to-one with several conductive plates 232, and the conductive heads 235 and conductive plates 232 are electrically connected.

[0024] The slot 234 has a sliding connector 237 inside, and each connector 237 is connected to a measuring wire 25. The connector 237 and the conductive head 235 form a snap-fit ​​structure and are in contact with each other to form a conductive structure. Each connector 237 is used to detect a type of data.

[0025] A limiting piece 236 is fixedly provided on the front of the plug slot 234 to block the plug 237. After the electrical data detection host 11 detects abnormal data of the corresponding switch, it pulls the plug 237 on the corresponding terminal 23 out of the plug slot 234 through the operation of the corresponding piston wire release column 33. When the plug 237 is subjected to tension, it will break the limiting piece 236, thus completing the rapid separation.

[0026] The power cable box 21 has an independent power chamber 26 and a valve body chamber 28 inside. Several piston wire release posts 33 are fixed in the independent power chamber 26. Each piston wire release post 33 corresponds to all the measuring wires 25 on a terminal 23. A piston component 34 is slidably arranged inside the piston wire release post 33.

[0027] Inside the piston retraction post 33, there is also a longitudinally erected guide post 35. The guide post 35 passes through the piston part 34 and forms a sliding connection. The lower wall of the piston part 34 is fixedly connected to the pull wire 32, which is connected to the corresponding measuring wire 25.

[0028] Inside the power independent chamber 26, a protective box 27 is also fixedly installed. The high-pressure gas tank 31 is fixed in the protective box 27. The multi-way control valve 29 is fixedly installed in the valve body chamber 28. The multi-way control valve 29 is controlled by the system. The high-pressure gas in the high-pressure gas tank 31 is controlled by the multi-way control valve 29 to rush into the corresponding piston wire pull column 33, push the piston 34 to move, and pull the wire 32.

[0029] The core technology lies in using the electrical data detection host 11 to monitor the electrical parameters of each switch connection terminal in the distribution cabinet in real time. When an anomaly is detected, the automatic evacuation protection module 2 triggers a "tail-cutting evacuation mechanism" to achieve physical self-protection of the detection device. Its detailed working principle is as follows: Electrical connections and signal acquisition under normal monitoring conditions: The U-shaped terminal head 231 of the terminal block 23 is directly mechanically connected to the wiring screw of the switch to be monitored in the distribution cabinet and electrically conductive. Multiple opposing conductive plates 232 (each representing a detection function, such as voltage, current, temperature, etc.) fixed on the inner wall of the U-shaped terminal head 231 are in contact with the wiring screw, thereby collecting the electrical signal of the switch terminal.

[0030] The electrical signal is conducted through the conductive sheet 232 to the conductive head 235 of the array on the front wall of the extension plate 233 (each conductive head 235 corresponds to and is electrically connected to a conductive sheet 232). Subsequently, the signal is transmitted to the measuring wire 25 through the plug 23 inserted into the plug slot 234 (each plug 237 corresponds to a measuring wire 25 for detecting a data).

[0031] All measuring wires 25 are neatly routed through the wire holes 24 on the wiring box 22 on the side wall of the power cable box 21, and finally converge to connect to the electrical data detection host 11. The electrical data detection host 11 (an integrated intelligent detection device that includes multiple functional instruments, alarm modules, and data recording modules) processes and records the multi-dimensional electrical parameters of each switch terminal in real time.

[0032] Anomaly detection and trigger determination: The electrical data detection host 11 continuously compares the collected real-time electrical parameters with internally preset safety thresholds. When an abnormality occurs in the parameters of a certain switch connection terminal (such as sudden current change, voltage drop, over-temperature, etc.), the host determines that the trigger condition has been met.

[0033] Here, a trigger criterion formula can be introduced: Let the real-time comprehensive anomaly index of the i-th switch be... , ; in , , Real-time current, voltage, and temperature; , , This corresponds to the safety benchmark value; , , Weighting coefficients. When When the value is ≥1 (the actual threshold can be calibrated), the electrical data detection host 11 sends a trigger signal.

[0034] Triggering the tail-cutting and evacuation mechanism: The trigger signal is transmitted to the multi-way control valve 29 (fixed inside the valve body chamber 28) in the automatic evacuation protection module 2. The multi-way control valve 29 precisely opens the corresponding channel according to the signal source.

[0035] At this time, the high-pressure gas (such as compressed nitrogen) stored in the high-pressure gas tank 31 sealed in the protective box 27 is released through the multi-way control valve 29 and quickly rushes into the corresponding piston retraction post 33 (each piston retraction post 33 corresponds to all the measuring wires 25 on a terminal 23).

[0036] High-pressure gas acts on the piston component 34 inside the piston retraction post 33, generating an instantaneous linear thrust. Let the gas pressure be P, and the effective force-bearing area of ​​the piston component 34 be A, then the thrust F = P × A. This thrust is much greater than the static friction between the connector 237 and the connector groove 234, and the fracture resistance of the limiting plate 236.

[0037] Under the thrust, the piston 34 slides rapidly along the longitudinally upright guide post 35, driving the pull wire 32 fixedly connected to its lower wall. The pull wire 32 directly pulls the set of measuring wires 25 connected to it.

[0038] Physical separation and protection completed: As the piston 34 moves, the pulling force is transmitted to the end connector 237 via the measuring wire 25. This pulling force first overcomes the static friction between the connector 237 and the insertion groove 234, and then applies an impact load to the limiting piece 236 on the front of the insertion groove 234. Since the limiting piece 236 is designed as a fracture-resistant structure, it is quickly broken under a pulling force exceeding its ultimate stress.

[0039] The connector 237 is completely withdrawn from the connector slot 234, achieving rapid physical separation from the terminal block 23. After separation, the measuring lead 25 is completely disconnected from the live switch terminal block, thereby protecting the electrical data detection host 11 and its connected detection circuit from damage caused by abnormal electrical shocks (such as arcing or overvoltage).

[0040] The entire evacuation process from triggering to separation It can be estimated from piston kinematics: Let the piston stroke be... The average acceleration is For the total mass of the piston 34, the pull wire 32, and the moving parts of the measuring wire 25, then This process typically takes place in milliseconds, enabling a "tail-cutting" self-protection mechanism.

[0041] Workflow: Equipment installation and wiring phase: The power cable box 21 of the automatic evacuation protection module 2 is fixed to the inner wall of the distribution cabinet along the wiring direction.

[0042] Install the U-shaped terminal head 231 of the wiring terminal 23 one by one onto the wiring screw of each switch to be monitored.

[0043] Insert the connector 237 with the measuring wire 25 into the corresponding terminal 23's slot 234 until it is locked in place by the limiting piece 236 to ensure reliable electrical contact.

[0044] The measuring wires 25 are passed through the wire holes 24 on the wiring box 22 in an orderly manner and introduced into the power pull box 21, where they are connected and fixed with the corresponding pull wires 32.

[0045] Connect the distal ends of all measuring leads 25 to the corresponding input terminals of the electrical data detection host 11.

[0046] Normal operation monitoring phase: The power supply to the data detection host 11 is turned on, and the voltage, current and other parameters of each switch terminal are collected in real time.

[0047] The host unit has a variety of instruments and recording modules that continuously process data and monitor abnormal states through an alarm module.

[0048] Anomaly detection and triggering phase: The electrical data detection host 11 compares real-time data with safety thresholds. If an abnormal electrical parameter of a switch terminal is detected (such as short circuit or overload), an evacuation trigger signal is immediately generated.

[0049] A trigger signal is sent to the multi-way control valve 29, specifying the piston retraction column 33 channel that needs to be activated.

[0050] Evacuation Execution Phase: The multi-way control valve 29 opens the corresponding channel, and the high-pressure gas in the high-pressure gas tank 31 rushes into the target piston retraction column 33.

[0051] High-pressure gas pushes piston 34 to move rapidly along guide post 35, and piston 34 drives pull wire 32 to pull measuring wire 25 sets.

[0052] The tension caused the limiting piece 236 to break, and the connector 237 was completely pulled out of the connector slot 234.

[0053] The measuring wire 25 of the corresponding channel is physically separated from the terminal 23, and the detection circuit is safely disconnected.

[0054] Alarm and recording phase: Meanwhile, the electrical data detection host 11 records the time, type, and switch number that triggered the evacuation of the abnormality, and issues an audible and visual alarm through the alarm module to prompt maintenance personnel to conduct an inspection.

[0055] Maintenance personnel can replace the broken limit plate 236 and the depressurized high-pressure gas tank 31 afterward, and reconnect the connector 237 to restore the device to standby status.

[0056] High-safety active protection: Through the "tail-cutting evacuation mechanism" of the automatic evacuation protection module 2, when an abnormal electrical parameter is detected, the measuring wire 25 can be actively and quickly physically separated from the live terminal, effectively preventing fault current or arc from back-to-the-electrical data detection host 11 through the detection circuit, thus avoiding equipment damage and fire risk.

[0057] Modular and independent control: Each switch to be monitored corresponds to an independent terminal 23 and is controlled by an independent piston disconnect post 33. The multi-way control valve 29 can precisely trigger the evacuation action of the fault channel without affecting the monitoring of other normal circuits, thus achieving refined fault isolation.

[0058] Fast response and high reliability: The compressed gas stored in the high-pressure gas tank 31 is used as a power source to drive the piston pull-out column 33 to complete the mechanical plugging and unplugging action. The response time is short (millisecond level) and it does not rely on the power supply of the distribution cabinet itself, so the reliability is high.

[0059] Multifunctional integrated detection: By setting multiple conductive plates 232 and connectors 237, the same terminal 23 can simultaneously connect multiple measuring wires 25 with different detection functions, realizing comprehensive monitoring of multiple parameters such as voltage, current and temperature of a single switch, with a high degree of integration.

[0060] The embodiments of the present invention have been described above, but the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of the present embodiments, all of which are within the protection scope of the present embodiments.

Claims

1. A power distribution cabinet fault detection device, characterized in that, include: Electrical data detection host (11), wherein an automatic evacuation protection module (2) is provided in the detection end direction of the electrical data detection host (11); The automatic evacuation protection module (2) is configured to trigger the tail-cutting evacuation mechanism to achieve self-protection of the detection device when an abnormal electrical parameter is detected at each switch connection terminal in the power distribution cabinet. The automatic evacuation protection module (2) includes a power cable box (21), a high-pressure gas tank (31), a piston cable release column (33), and a terminal block (23). The wiring terminal (23) is electrically connected to the electrical data detection host (11) through the measuring wire (25), and each switch to be monitored has a corresponding independent wiring terminal (23). The end of the measuring lead (25) and the wiring terminal (23) adopt a molded plug-in structure to achieve a separable electrical connection; The power cable box (21) is fixedly installed at a preset position on the inner wall of the distribution cabinet along the routing direction of the measuring wire (25); The high-pressure gas tank (31) and the piston wire release column (33) are both integrated and installed in the internal cavity of the power cable box (21); The high-pressure gas tank (31) and the piston deflection column (33) are connected by a multi-way control valve (29) to achieve a gas passage connection; When the electrical data detection host (11) detects an abnormal electrical parameter signal, it controls the corresponding piston retraction column (33) to perform an action through the multi-way control valve (29); Under the impact of the high-pressure gas released from the high-pressure gas tank (31), the piston retraction column (33) generates a rapid linear motion, pulling the corresponding measuring wire (25) and the terminal (23) to achieve physical separation, thus completing the tail-breaking retraction protection action.

2. The power distribution cabinet fault detection device according to claim 1, characterized in that, The electrical data detection host (11) is an integrated intelligent detection device, and the electrical data detection host (11) includes a variety of instruments with different functions, an alarm module and a data recording module. Each terminal (23) is connected to multiple measuring wires (25) with different detection functions. The same terminal (23) can detect different data of the switch at the same time.

3. The power distribution cabinet fault detection device according to claim 1, characterized in that, The power cable box (21) has multiple cable trays (22) on its side wall. Each cable tray (22) corresponds to a row of switches in the distribution cabinet and is used for the neat routing of the measuring wires (25). The cable trays (22) are fixed in the distribution cabinet. The cable trays (22) have arrayed wire holes (24). The end of the measuring wire (25) passes through the wire hole (24) and connects to the terminal block (23).

4. The power distribution cabinet fault detection device according to claim 1, characterized in that, The terminal block (23) includes a U-shaped terminal head (231) and an extension plate (233). The extension plate (233) is fixed below the U-shaped terminal head (231). The inner wall of the U-shaped terminal head (231) is fixedly provided with a plurality of opposing conductive pieces (232). Each conductive piece (232) represents a detection function. The U-shaped terminal head (231) is connected to the wiring screw of the switch in the distribution cabinet. The plurality of conductive pieces (232) are in contact with the wiring screw and conduction.

5. A power distribution cabinet fault detection device according to claim 4, characterized in that, The front wall array of the extension plate (233) has insertion slots (234), and a conductive head (235) is fixed on the top of each insertion slot (234). Several conductive heads (235) correspond one-to-one with several conductive plates (232), and the conductive heads (235) and conductive plates (232) are electrically connected.

6. The power distribution cabinet fault detection device according to claim 5, characterized in that, The plug slot (234) is slidably connected to a plug (237). Each plug (237) is connected to a measuring wire (25). The plug (237) and the conductive head (235) form a snap-fit ​​structure and are in contact with each other to form a conductive structure. Each plug (237) is used to detect a type of data.

7. A power distribution cabinet fault detection device according to claim 6, characterized in that, A limiting piece (236) is fixedly provided on the front of the plug slot (234) to block the plug (237). After the electrical data detection host (11) detects abnormal data of the corresponding switch, it pulls the plug (237) on the corresponding terminal (23) out of the plug slot (234) through the operation of the corresponding piston wire release column (33). When the plug (237) is subjected to tension, the limiting piece (236) will be broken, thus completing the rapid separation.

8. A power distribution cabinet fault detection device according to claim 7, characterized in that, The power cable box (21) is provided with a power independent chamber (26) and a valve body chamber (28). Several piston wire release columns (33) are fixed in the power independent chamber (26). Each piston wire release column (33) corresponds to all the measuring wires (25) on a terminal (23). A piston component (34) is slidably arranged inside the piston wire release column (33).

9. A power distribution cabinet fault detection device according to claim 8, characterized in that, Inside the piston retraction post (33), there is also a guide post (35) standing vertically. The guide post (35) passes through the piston part (34) and forms a sliding connection. The lower wall of the piston part (34) is fixedly connected to a pull wire (32). The pull wire (32) is connected to the corresponding measuring wire (25) group.

10. A power distribution cabinet fault detection device according to claim 9, characterized in that, The power independent chamber (26) is also fixedly equipped with a protective box (27). The high-pressure gas tank (31) is fixed in the protective box (27). The multi-way control valve (29) is fixedly installed in the valve body chamber (28). The multi-way control valve (29) is controlled by the system. The high-pressure gas in the high-pressure gas tank (31) is controlled by the multi-way control valve (29) to rush into the corresponding piston pull-out column (33), push the piston (34) to move, and pull the pull wire (32).

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