Power distribution system protection device, system and method

Abstract

The invention relates to the technical field of power distribution system protection, in particular to a power distribution system protection device, system and method.The power distribution system protection device comprises a cabinet body, a cabinet door, a rack, a plurality of sliding rails, a monitoring control module and a storage display module, and the cabinet door is movably connected to the cabinet body; the rack slides in the cabinet body through a plurality of sliding rails; a plurality of mounting racks are arranged in the rack; two pulleys are arranged on the front side of the lower portion of the rack, grooves matched with the pulleys are formed in the lower portion of the cabinet body, and the grooves are close to the cabinet door. A sensor group is arranged in the cabinet body and transmits data to a monitoring control module for processing and controlling opening and closing; the monitoring control module transmits data to the storage display module to store the data. According to the invention, the technical problem that the operation is inconvenient during the maintenance of the power distribution system is solved, the safety of maintenance personnel in the operation process is ensured, and the safety accident caused by negligence of non-opening is effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution system protection, and in particular to a power distribution system protection device, system and method. Background Art

[0002] The power distribution system is a complex system that integrates various power distribution equipment. Its core function is the conversion, distribution and safety of electric energy. Since the power distribution system is always energized during operation, electrical safety issues are particularly important. To ensure system safety, special protection devices must be set up to isolate and protect the power distribution system.

[0003] Traditional power distribution system protection devices are mainly used to isolate the power distribution system from the outside world. When the voltage or current in the power distribution system is too large, the circuit breaker automatically trips. Some power distribution system protection devices are more advanced and intelligent. They can not only isolate the power distribution equipment from the outside world, but also monitor the voltage and current status of the power distribution system in real time and accurately, and predict faults based on the voltage and current to provide comprehensive protection. However, these intelligent protection devices were not designed to fully consider the potential interference of external factors on the power distribution system. Especially when the staff need to inspect the power distribution system, they often need to enter the distribution cabinet to work. If the power distribution system fails to open in time, every step of the staff's operation will face extremely high safety risks.

[0004] The Chinese utility model patent with the name of "A household photovoltaic distribution box" and the publication number CN219937689U has been published. The patent installs a slidable distribution box in a protective box to further protect the distribution system. The staff can inspect the distribution system in the box by pulling out the distribution box. However, in this patent, when the distribution box is pulled out, the distribution box lacks sufficient load-bearing support, which can easily cause it to tilt. The more it is pulled out, the more obvious the tilt is, which brings inconvenience to the staff for inspection; when pushing the distribution box back, the staff needs to use extra force to overcome the tilt, which makes the operation difficult; and the distribution box is prone to bumps during the pushing and pulling process, which may loosen the distribution system line and cause safety accidents.

[0005] The Chinese utility model patent with the name of "A high-voltage power distribution cabinet that is easy to maintain" and the publication number of CN221009577U has been published. The patent allows the power distribution system to be completely pulled out of the power distribution cabinet for maintenance by the staff. However, during the pulling-out process, there is a lack of a detection mechanism for the closing and opening of the power distribution system. If the staff fails to open the switch before operation, a safety accident may occur due to negligence. Summary of the invention

[0006] The purpose of the present application is to provide a power distribution system protection device, system and method, which solves the technical problem of inconvenient operation during maintenance of the power distribution system; the present application allows the power distribution system to be completely pulled out for maintenance, and at the same time integrates the closing and opening detection functions, ensuring the safety of maintenance personnel during operation, effectively avoiding safety accidents caused by negligent failure to open the switch, and improving the convenience and safety of maintenance operations.

[0007] In order to solve the above technical problems, the solution adopted by this application is as follows:

[0008] The present invention provides a power distribution system protection device, comprising a cabinet, a cabinet door, a frame, and a plurality of slide rails, wherein the cabinet door is movably connected to the cabinet; the slide rail comprises a slider and a track, and the slider slides on the track; the plurality of sliders are respectively fixed to the frame, and a plurality of tracks matching the plurality of sliders are fixed to the inner wall of the cabinet, and the frame slides in the cabinet through the slide rails; a plurality of mounting frames are arranged in the frame; the characteristic is that: two pulleys are arranged on the front side below the frame, and a groove matching the pulleys is arranged below the cabinet, and the groove is close to the cabinet door; a sensor group is arranged in the cabinet, and the sensor group comprises a photoelectric sensor group, a vibration sensor group, a current and voltage sensor group, and a temperature sensor group, the photoelectric sensor group and the temperature sensor group are arranged in the cabinet, and the vibration sensor group and the current and voltage sensor group are arranged on the frame.

[0009] In some embodiments, the photoelectric sensor group includes photoelectric sensor 1 for monitoring the switch status of the cabinet door and photoelectric sensor 2 and photoelectric sensor 3 for monitoring the movement of the rack. Photoelectric sensor 1, photoelectric sensor 2, and photoelectric sensor 3 are all arranged on the inner wall of the cabinet, photoelectric sensor 2 is away from the cabinet door, and photoelectric sensor 1 and photoelectric sensor 3 are close to the cabinet door.

[0010] In some embodiments, the inner wall of the cabinet is further provided with an indicator light group, and the top of the cabinet is provided with a fan group.

[0011] In some embodiments, a display screen, buttons, a grounding pole, and an interface for transmitting data are provided on the outside of the cabinet, and the buttons include a main closing button and a main opening button.

[0012] The present invention also provides a protection system for a power distribution system, which is applied to a power distribution system protection device as described in claims 1 to 4, and is characterized in that it comprises a monitoring control module and a storage display module, wherein the monitoring control module and the storage display module are connected;

[0013] The monitoring and control module is used to monitor the working condition of the power distribution system, the temperature in the cabinet, and the movement of the rack in real time; the monitoring and control module includes a controller 1, a communication module 1, a drive module, and a processing module; the controller 1 is respectively connected to the communication module 1, the drive module, and the processing module, and the processing module is respectively connected to the drive module and the sensor group;

[0014] The processing module is used to process the data of the sensor group and transmit the processed data to the controller 1;

[0015] The driving module is used to receive the control signals sent by the controller 1 and the sensor group, and drive the external device connected thereto to work according to the control signals; the external device includes an indicator light group and a motor, and the motor is connected to the fan;

[0016] The storage display module is used to store and display the power distribution system data; the storage display module includes a second controller, a second communication module, a display screen, and a memory, and the second controller is respectively connected to the second communication module, the display screen, and the memory;

[0017] The second controller is connected to the button; the interface is connected to the memory through the second controller;

[0018] The controller 1 is connected to the controller 2 in sequence through the communication module 1, the communication module 2 and the controller 2.

[0019] In some embodiments, the processing module includes a current and voltage processing module, a photoelectric processing module, a vibration processing module, and a temperature processing module. The current and voltage processing module, the photoelectric processing module, the vibration processing module, and the temperature processing module are all connected to the controller, and the current and voltage processing module, the photoelectric processing module, the vibration processing module, and the temperature processing module are all connected to the sensor group; the photoelectric processing module and the temperature processing module are respectively connected to the driving module.

[0020] In some embodiments, the photoelectric processing module is respectively connected to the photoelectric sensor group, the vibration sensor group is connected to the vibration sensor group, the current and voltage processing module is connected to the current and voltage sensor group, and the temperature processing module is connected to the temperature sensor group.

[0021] In some embodiments, the photoelectric processing module includes a primary photoelectric processing module, a secondary photoelectric processing module, and a tertiary photoelectric processing module, and the photoelectric processing module, the secondary photoelectric processing module, and the tertiary photoelectric processing module are connected in sequence; the secondary photoelectric processing module is connected to the driving module; the tertiary photoelectric processing module is connected to the controller;

[0022] The photoelectric sensor 1 is connected to the photoelectric processing module 1; the photoelectric sensor 2 is connected to the photoelectric processing module 2; and the photoelectric sensor 3 is connected to the photoelectric processing module 3.

[0023] In some embodiments, the driving module includes an indicator light driving module and a motor driving module. The controller 1 and the processing module respectively drive the indicator light group through the indicator light driving module. The controller 1 drives the motor to work through the motor driving module, and the motor operation drives the fan (7) to work and cool down.

[0024] The present invention further provides a power distribution system protection method, which is applied to a power distribution system protection system according to claims 5 to 9, and is characterized in that the method comprises:

[0025] Step S1: Photoelectric sensor 1 detects whether the cabinet door is open; when it is detected that the cabinet door is open, step S2 is executed; when it is detected that the cabinet door is not open, step S1 is repeated;

[0026] Step S2: Photoelectric sensor 1 transmits a control signal to the primary photoelectric processing module, the primary photoelectric processing module is turned on, the secondary photoelectric processing module and photoelectric sensor 2 are powered, and photoelectric sensor 2 starts to detect whether the rack is in the initial position;

[0027] If the photoelectric sensor 2 detects that the rack is in the initial position, repeat step S2;

[0028] If the photoelectric sensor 2 detects that the rack is not in the initial position, step S3 is executed;

[0029] Step S3: the photoelectric sensor 2 transmits a control signal to the secondary photoelectric processing module, the secondary photoelectric processing module is turned on, the tertiary photoelectric processing module and the photoelectric sensor 3 are powered, and the photoelectric sensor 3 starts to detect whether the rack passes through the specified position, and further determines the movement state of the rack;

[0030] If the photoelectric sensor 3 confirms that the rack has not passed the specified position, repeat step S3;

[0031] If the photoelectric sensor 3 confirms that the rack has passed the specified position, step S4 is executed;

[0032] Step S4: Photoelectric sensor 3 transmits a control signal to a three-stage photoelectric processing module, and the three-stage photoelectric processing module outputs a control signal to controller 1, and controller 1 automatically performs a tripping operation.

[0033] The technical solution of the present application has at least the following advantages and beneficial effects:

[0034] 1. In this device, the power distribution system, circuit breaker group and monitoring control module are all firmly installed on the mounting frame of the rack. The front side of the lower part of the rack is equipped with two pulleys, and the rear side is connected to the slide rail. This design allows the staff to easily pull the rack out of the cabinet when inspecting the power distribution system, which greatly facilitates the inspection and maintenance work; and the rack always remains horizontal during the pushing and pulling process, effectively avoiding bumps, thereby ensuring that the equipment in the power distribution system will not cause the line to loosen due to external factors.

[0035] 2. The system is provided with a detection control module and a storage display module. The controller 1 in the detection control module can transmit the collected sensor data to the controller 2 through the communication module 1 and the communication module 2, and then the controller 2 processes the data. After completion, the controller 2 transmits the data to the display screen for display and stores it in the memory. The staff can obtain the data detected by the sensor by directly connecting the external interface to the controller 2 without opening the cabinet door. When there is no failure in the distribution system, loose lines caused by contact with the distribution system can be avoided. When a failure occurs in the distribution system, the data before the failure in the memory can be retrieved for analysis.

[0036] 3. The device is provided with three groups of photoelectric sensors, including photoelectric sensor 1, photoelectric sensor 2, and photoelectric sensor 3. Photoelectric sensor 1 is responsible for monitoring the switch status of the cabinet door. Once it detects that the cabinet door is opened, it triggers photoelectric sensor 2 to start working to detect the movement of the rack; when photoelectric sensor 2 detects that the rack moves a certain distance, photoelectric sensor 3 is immediately started. At this time, if the monitoring control module finds that the power distribution system is not closed, the indicator light will light up as a warning. If photoelectric sensor 3 detects that the rack continues to move and the power distribution system is still in an unclosed state, it sends a signal to controller 1 through the processing module, and controller 1 will automatically perform the opening operation, thereby effectively preventing electrical accidents caused by improper operation when the staff pulls out the power distribution system for maintenance, thereby ensuring the safety of the staff; in the present invention, photoelectric sensor 1, photoelectric sensor 2, and photoelectric sensor 3 are powered on and started in sequence. This startup sequence can achieve the effect of energy saving and consumption reduction, thereby reducing operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is the overall structure diagram of the present invention;

[0038] Figure 2 It is a front view of the present invention;

[0039] Figure 3 is a signal flow chart of the present invention;

[0040] Figure 4 The circuit diagram of the photoelectric processing module of the present invention;

[0041] Figure 5This is a circuit diagram of an indicator light driving module of the present invention;

[0042] In the figure: 1- rack, 2- pulley, 3- grounding post, 4- button, 5- display screen, 6- interface, 7- fan, 8- mounting frame, 9- slide rail, 10- indicator light. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures. If the terms "center", "upper", "lower", "inner", "outer", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the figure, or the orientation or position relationship in which the product of the application is usually placed when in use, it is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. It should also be noted that unless otherwise clearly specified and limited, if the terms "set", "install", and "connect" appear, they should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] Example 1

[0046] Please refer to Figure 1-Figure 5 The present invention provides a power distribution system protection device, which is the same as the prior art, and includes a cabinet, a cabinet door, a rack 1, and a plurality of slide rails 9, wherein the cabinet door is movably connected to the cabinet; the slide rail 9 includes a slider and a track, and the slider slides on the track; the plurality of sliders are respectively fixed to the rack 1, and a plurality of tracks matching the plurality of sliders are fixed to the inner wall of the cabinet, and the rack 1 slides in the cabinet through the slide rails 9; a plurality of mounting frames 8 are provided in the rack 1;

[0047] Different from the prior art, two pulleys 2 are arranged on the front side below the frame 1, and a groove matching the pulley 2 is arranged under the cabinet, and the groove is close to the cabinet door; a sensor group is arranged in the cabinet, and the sensor group includes a photoelectric sensor group, a vibration sensor group, a current and voltage sensor group, and a temperature sensor group. The photoelectric sensor group and the temperature sensor group are arranged in the cabinet, and the vibration sensor group and the current and voltage sensor group are arranged on the frame 1.

[0048] In this embodiment, four slide rails 9 are included, wherein one slide rail 9 is respectively arranged at the top left side and the top right side of the cabinet inner wall, and one slide rail 9 is respectively arranged at the left side and the right side of the lower side of the cabinet inner wall.

[0049] When the rack 1 is in the cabinet, the pulley 2 is in the groove, and the slider in the slide rail 9 is located at the rear end of the rail; when the rack 1 is pulled out, the pulley 2 slides outward, and the slider slides forward from the rear end, and the rack 1 is pulled out smoothly until the slider in the slide rail 9 reaches the front end of the rail, and the rack 1 is fixed. To facilitate pulling out the rack 1, a handle is also provided on the rack 1.

[0050] It should be explained that the pulley 2 is not only used to help the rack 1 slide out, but also used to support the rack 1, so that the rack 1 always remains in a horizontal state during the sliding process, further ensuring that the distribution system will not be bumped during the pulling out process, causing the distribution line to loosen.

[0051] It should be noted that the power distribution system, current and voltage sensor group, and vibration sensor group are all fixedly connected to the mounting frame 8. The current and voltage sensor group is used to monitor the voltage and current of the power distribution system to prevent overvoltage and overcurrent. The vibration sensor group is used to monitor the vibration of the rack 1 to prevent the equipment on the mounting frame 8 from vibrating during operation and causing the line to loosen.

[0052] It should be explained that the current and voltage sensor group includes a current sensor and a voltage sensor, the model of the current sensor is HAH1DRW 500-S / SP5, and the model of the voltage sensor is DVM 4000-UI; the vibration sensor group includes a vibration sensor, whose model is SW-18010P.

[0053] The photoelectric sensor group includes photoelectric sensor 1 and photoelectric sensor 2 for monitoring the movement of the rack 1, and photoelectric sensor 3 for monitoring the switch status of the cabinet door. Photoelectric sensor 1, photoelectric sensor 2, and photoelectric sensor 3 are all arranged on the inner wall of the cabinet, photoelectric sensor 2 is away from the cabinet door, and photoelectric sensor 1 and photoelectric sensor 3 are close to the cabinet door.

[0054] It should be explained that when the rack 1 moves, it passes through the photoelectric sensor 1 and the photoelectric sensor 2 in sequence. The models of the photoelectric sensor 1, the photoelectric sensor 2 and the photoelectric sensor 3 are all EE-SPZ401-A.

[0055] It should be explained that the temperature sensor group is used to monitor the temperature inside the cabinet to prevent the temperature inside the cabinet from being too high and thus affecting the operation of the power distribution system. It includes a thermistor, and the model of the thermistor is NTC10D-11.

[0056] The inner wall of the cabinet is also provided with an indicator light group, which is used to indicate the opening and closing status of the power distribution system; the indicator light group includes an opening indicator light and a closing indicator light.

[0057] A fan group is arranged on the top of the cabinet, and the fan group includes two fans 7. The fans 7 are used to reduce the temperature inside the cabinet. When the temperature sensor group detects that the temperature inside the cabinet is too high, the fans 7 will be turned on.

[0058] A display screen 5, buttons 4, grounding poles 3, and an interface 6 for transmitting data are arranged on the outside of the cabinet; the display screen 5 is used to display relevant data of the power distribution system, including voltage, current, temperature, and fault conditions; the buttons 4 include a main closing button and a main opening button, and the staff can control the closing and opening of the power distribution system through buttons 4 outside the cabinet; the grounding pole 3 is used for grounding, and the interface 6 is used for transmitting data, and the staff can read the collected power distribution related data through the interface 6.

[0059] In this embodiment, the display screen 5 is a touch display screen 5, and its model is TPC1031Nt.

[0060] The present invention also provides a protection system for a power distribution system, which is applied to the above-mentioned power distribution system protection device, and includes a monitoring control module and a storage display module, wherein the monitoring control module and the storage display module are connected;

[0061] The monitoring and control module is used to monitor the working condition of the power distribution system, the temperature in the cabinet, and the movement of the rack 1 in real time; the monitoring and control module includes a controller 1, a communication module 1, a drive module, and a processing module; the controller 1 is connected to the communication module 1, the drive module, and the processing module respectively, and the processing module is connected to the drive module and the sensor group respectively;

[0062] A processing module, used for processing the data of the sensor group and transmitting the processed data to the controller 1;

[0063] A driving module is used to receive control signals sent by the controller 1 and the sensor group, and drive the external device connected thereto to work according to the control signals; the external device includes an indicator light group, a motor, and the motor is connected to a fan 7;

[0064] The storage display module is used to store and display the power distribution system data; the storage display module includes a second controller, a second communication module, a display screen 5, and a memory, and the second controller is connected to the second communication module, the display screen 5, and the memory respectively;

[0065] The controller 2 is connected to the button 4; the interface 6 is connected to the memory through the controller 2;

[0066] The controller one is connected in sequence through the communication module one, the communication module two and the controller two.

[0067] It should be noted that the purpose of setting up two modules in the protection system is to prevent the protection system from being completely paralyzed due to a distribution system failure; when the distribution system failure causes the monitoring and control module to be damaged or fails, the storage and display module can display or save the data of the distribution system failure, so that the staff can check the cause of the failure; and the staff can obtain the data detected by the sensor by directly connecting the external interface to the controller 2 without opening the cabinet door. When the distribution system does not fail, it can avoid loosening of the line due to contact with the distribution system; the staff can also transmit the control signal to the controller 1 through the display screen 5 or the button 4 through the controller 2. For some operations, such as closing and opening, the staff can control the distribution system without opening the cabinet door;

[0068] It should be noted that the models of controller 1 and controller 2 are both STM32F103C8T6; the model of the communication module is SIM300C.

[0069] The processing module includes a current and voltage processing module, a photoelectric processing module, a vibration processing module, and a temperature processing module. The current and voltage processing module, the photoelectric processing module, the vibration processing module, and the temperature processing module are all connected to the controller, and the current and voltage processing module, the photoelectric processing module, the vibration processing module, and the temperature processing module are all connected to the sensor group; the photoelectric processing module and the temperature processing module are respectively connected to the driving module.

[0070] The photoelectric processing module is respectively connected to the photoelectric sensor group, the vibration sensor group is connected to the vibration sensor group, the current and voltage processing module is connected to the current and voltage sensor group, and the temperature processing module is connected to the temperature sensor group.

[0071] The photoelectric processing module includes a primary photoelectric processing module, a secondary photoelectric processing module, and a tertiary photoelectric processing module, which are connected in sequence; the secondary photoelectric processing module is connected to the driving module; and the tertiary photoelectric processing module is connected to the controller.

[0072] It is worth noting that the first-level photoelectric processing module, the second-level photoelectric processing module, and the third-level photoelectric processing module are connected to the photoelectric sensor one, the photoelectric sensor two, and the photoelectric sensor three respectively.

[0073] Further, the photoelectric processing module includes a photoelectric sensor 1 U5, a photoelectric sensor 2 U6, a photoelectric sensor 3 U7, a comparator U8, field effect transistors Q2, Q4, transistors Q3, Q5, a capacitor C4, resistors R14, R15, R16, R17, R18, R19, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R31;

[0074] Among them, the first-level photoelectric processing module includes a photoelectric sensor U5, a field effect transistor Q2, and resistors R14, R15, R16, R17, and R19; the second-level photoelectric processing module includes a photoelectric sensor U6, a transistor Q3, a field effect transistor Q4, and resistors R18, R20, R21, R22, R23, and R24; the third-level photoelectric processing module includes a photoelectric sensor U7, a transistor Q5, a capacitor C4, and resistors R25, R26, R27, R28, R29, R30, and R31;

[0075] Specifically, one end of the resistor R14 is connected to one end of the resistor R15 and is connected to the power supply, the other end of the resistor R14, one end of the resistor R16, and the source of the field effect tube Q2 are connected, the other end of the resistor R15 is connected to the pin 1 of the photoelectric sensor U5, the pin 2 of the photoelectric sensor U5, one end of the resistor R17, and one end of the resistor R19 are connected and grounded, the other end of the resistor R16 is connected to the pin 4 of the photoelectric sensor U5, the pin 3 of the photoelectric sensor U5, the other end of the resistor R17, and the gate of the field effect tube Q2 are connected, the drain of the field effect tube Q2, the resistor R 19 is connected to one end of the resistor R18, the other end of the resistor R18 is connected to the base of the transistor Q3, the collector of the transistor Q3, one end of the resistor R20, and the pin 2 of the photoelectric sensor U6 are connected, the other end of the resistor R20, the pin 1 of the photoelectric sensor U6, and one end of the resistor R21 are connected and connected to the power supply, the other end of the resistor R21, one end of the resistor R22, and the source of the field effect tube Q4 are connected, the other end of the resistor R22 is connected to the pin 4 of the photoelectric sensor U6, the pin 3 of the photoelectric sensor U6, the gate of the field effect tube Q4, the resistor R 23, the emitter of transistor Q3, the other end of resistor R23, and one end of resistor R24 ​​are connected and grounded, the other end of resistor R24, one end of resistor R25, and the drain of field effect transistor Q4 are connected, the other end of resistor R25 and the base of transistor Q5 are connected, the collector of transistor Q5, one end of resistor R26, and pin 2 of photoelectric sensor U7 are connected, the other end of resistor R26, pin 1 of photoelectric sensor U7, one end of resistor R28, one end of resistor R29, and pin 4 of comparator U8 are connected, the other end of resistor R28, photoelectric sensor Pin 4 of the photoelectric sensor U7 and one end of the resistor R30 are connected, the other end of the resistor R29, pin 3 of the comparator U8, and one end of the resistor R31 are connected, the other end of the resistor R30, pin 2 of the comparator U8, and one end of the capacitor C4 are connected, the emitter of the transistor Q5 and one end of the resistor R27 are connected, and the OP_OUT1 output terminal is set here; the other end of the resistor R27, pin 3 of the photoelectric sensor U7, the other end of the resistor R31, the other end of the capacitor C4, and pin 5 of the comparator U8 are connected and grounded, and pin 1 of the comparator U8 is set as the OP_OUT 2 output terminal.

[0076] It should be noted that the output signal of the OP_OUT1 output terminal indicates that the rack 1 starts to move, and the output signal of the OP_OUT2 output terminal indicates that the automatic movement error of the rack 1 is eliminated and it is determined that the rack 1 is moved manually.

[0077] It should be noted that the field effect transistor Q2 and the field effect transistor Q4 are both PMOS tubes, and their model is AO3401A; the model of the comparator is TLV3201AIDBVR.

[0078] The driving module includes an indicator light driving module and a motor driving module. The controller 1 and the processing module drive the indicator light group through the indicator light driving module respectively. The controller 1 drives the motor to work through the motor driving module, and the motor drives the fan 7 to work and cool down.

[0079] Further, the indicator light driving module includes an AND gate U9, indicator lights LED1, LED2, transistors Q6, Q7, resistors R32, R33, R34, R35, R36;

[0080] Specifically, one end of the resistor R32 is set as the L_IN1 input end, the other end of the resistor R32 is connected to the base of the transistor Q6, the collector of the transistor Q6, one end of the resistor R33, the cathode of the indicator light LED1, and the pin 2 of the AND gate U9, the other end of the resistor R33 is connected to the anode of the indicator light LED1 and is connected to the power supply, the emitter of the transistor Q6, the pin 3 of the AND gate U9, one end of the resistor R36, the emitter of the transistor Q7 are connected and grounded, and the pin 1 of the AND gate U9 is set as the L_IN2 input end, and is connected to the pin 5 of the AND gate U9, one end of the resistor R34, and the anode of the indicator light LED2, the other end of the resistor R34, the cathode of the indicator light LED2, and the collector of the transistor Q7, the gate of the transistor Q7, one end of the resistor R35, and the other end of the resistor R36 are connected, and one end of the resistor R35 is connected to the pin 4 of the AND gate U9.

[0081] It should be noted that the L_IN1 input terminal is connected to the controller 1, and the L_IN2 input terminal is connected to the OP_OUT1 output terminal of the photoelectric processing module; the indicator LED1 is on to indicate that the power distribution system has been disconnected, and the indicator LED2 is on to indicate that the power distribution system has not been disconnected, and the staff needs to pay attention to safety. After the controller 1 controls the power distribution system to disconnect, it outputs an indication signal to the L_IN1 input terminal. At this time, the indicator LED1 is on, and the indicator LED2 will not be on even if the L_IN2 input terminal inputs a signal; if the L_IN1 input terminal does not receive a signal and the L_IN2 input terminal receives a signal at this time, the indicator LED2 will be on until the L_IN1 input terminal receives a signal, and the indicator LED2 will go out.

[0082] It should be explained that the model of the AND gate is SN74LVC1G08DBVR.

[0083] It should be noted that the above transistors are all of NPN type.

[0084] The system also includes a power module, which is connected to the monitoring and control module and the display and storage module respectively. The power module is used to provide power to the monitoring and control module and the display and storage module. When the power distribution system is working normally, the power module can be charged through the power distribution system; when the power distribution system fails, the power module can start the backup power supply to provide power to the monitoring and control module and the display and storage module, ensuring that in this case, the protection system can continue to monitor, control and record data.

[0085] It should be noted that the above-mentioned electronic devices can be purchased in domestic and foreign markets.

[0086] The present invention also provides a power distribution system protection method, which is applied to the above-mentioned power distribution system protection system, and is characterized in that the method comprises:

[0087] Step S1: Photoelectric sensor 1 detects whether the cabinet door is open; when it is detected that the cabinet door is open, step S2 is executed; when it is detected that the cabinet door is not open, step S1 is repeated;

[0088] Step S2: Photoelectric sensor 1 transmits a control signal to the primary photoelectric processing module, the primary photoelectric processing module is turned on, the secondary photoelectric processing module and photoelectric sensor 2 are powered, and photoelectric sensor 2 starts to detect whether the rack is in the initial position;

[0089] If the photoelectric sensor 2 detects that the rack is in the initial position, repeat step S2;

[0090] If the photoelectric sensor 2 detects that the rack is not in the initial position, step S3 is executed;

[0091] Step S3: the photoelectric sensor 2 transmits a control signal to the secondary photoelectric processing module, the secondary photoelectric processing module is turned on, the tertiary photoelectric processing module and the photoelectric sensor 3 are powered, and the photoelectric sensor 3 starts to detect whether the rack passes through the specified position, and further determines the movement state of the rack;

[0092] If the photoelectric sensor 3 confirms that the rack has not passed the specified position, repeat step S3;

[0093] If the photoelectric sensor 3 confirms that the rack has passed the specified position, step S4 is executed;

[0094] Step S4: Photoelectric sensor 3 transmits a control signal to a three-stage photoelectric processing module, and the three-stage photoelectric processing module outputs a control signal to controller 1, and controller 1 automatically performs a tripping operation.

[0095] Specifically, the workflow of the photoelectric processing module is:

[0096] Photoelectric sensor 1 U5 detects that the cabinet door is opened, the field effect tube Q2 is turned on, and then the transistor Q3 is turned on, the secondary photoelectric processing module and the photoelectric sensor 2 U6 obtain power, and the photoelectric sensor 2 U6 starts to work;

[0097] Photoelectric sensor 2 U6 detects that rack 1 leaves the initial position, that is, rack 1 starts to move, field effect tube Q4 is turned on, and then transistor Q5 is turned on, and the three-stage photoelectric processing module and photoelectric sensor 3 U7 obtain power, and photoelectric sensor 3 U7 starts to work at this time;

[0098] Photoelectric sensor 3 U7 detects that rack 1 passes the specified position, which further confirms that rack 1 moves. Then, the OP_OUT2 output terminal outputs a non-tripping signal to controller 1, and controller 1 automatically trips the power distribution system according to the signal.

[0099] In the present invention, photoelectric sensor 1 U5, photoelectric sensor 2 U6, and photoelectric sensor 3 U7 are powered on and started in sequence. This startup sequence can achieve the effect of energy saving and consumption reduction, thereby reducing operating costs; the photoelectric sensor group directly detects the movement status of the rack. When the rack needs to be moved for maintenance or expansion, the system can ensure that the distribution system is safely powered off in time; when abnormal movement is detected, the switch is opened in time, avoiding electrical accidents in the distribution system that may be caused by rack movement when the distribution cabinet is opened.

[0100] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solution invented here based on the above description, and the scope of the present invention is defined by the attached claims.

Claims

1. A power distribution system protection device, comprising a cabinet, a cabinet door, a frame (1), and a plurality of slide rails (9), wherein the cabinet door is movably connected to the cabinet; the slide rail (9) comprises a slider and a track, and the slider slides on the track; the plurality of sliders are respectively fixed to the frame (1), and a plurality of tracks matching the plurality of sliders are fixed to the inner wall of the cabinet, and the frame (1) slides in the cabinet through the slide rails (9); the frame (1) is provided with a plurality of mounting frames (8); characterized in that: Two pulleys (2) are arranged at the front side below the frame (1); a groove matching the pulley (2) is arranged below the cabinet, and the groove is close to the cabinet door; a sensor group is arranged inside the cabinet, and the sensor group includes a photoelectric sensor group, a vibration sensor group, a current and voltage sensor group, and a temperature sensor group; the photoelectric sensor group and the temperature sensor group are arranged inside the cabinet, and the vibration sensor group and the current and voltage sensor group are arranged on the frame (1).

2. A power distribution system protection device according to claim 1, characterized in that: The photoelectric sensor group comprises a photoelectric sensor 1 for monitoring the switch state of the cabinet door, and a photoelectric sensor 2 and a photoelectric sensor 3 for monitoring the movement of the frame (1). The photoelectric sensor 1, the photoelectric sensor 2 and the photoelectric sensor 3 are all arranged on the inner wall of the cabinet, the photoelectric sensor 2 is far away from the cabinet door, and the photoelectric sensor 1 and the photoelectric sensor 3 are close to the cabinet door.

3. A power distribution system protection device according to claim 1, characterized in that: The inner wall of the cabinet is also provided with an indicator light group, and the top of the cabinet is provided with a fan group.

4. A power distribution system protection device according to claim 1, characterized in that: The outer side of the cabinet is provided with a display screen (5), buttons (4), a grounding column (3), and an interface (6) for transmitting data, wherein the buttons (4) include a total closing button and a total opening button.

5. A protection system for a power distribution system, applied to a power distribution system protection device as claimed in claims 1 to 4, characterized in that: It includes a monitoring control module and a storage display module, wherein the monitoring control module and the storage display module are connected; The monitoring and control module is used to monitor the working condition of the power distribution system, the temperature in the cabinet, and the movement of the rack (1) in real time; the monitoring and control module comprises a controller 1, a communication module 1, a drive module, and a processing module; the controller 1 is respectively connected to the communication module 1, the drive module, and the processing module, and the processing module is respectively connected to the drive module and the sensor group; The processing module is used to process the data of the sensor group and transmit the processed data to the controller 1; The driving module is used to receive control signals sent by the controller 1 and the sensor group, and drive the external device connected thereto to operate according to the control signals; the external device includes an indicator light (10) group and a motor, and the motor is connected to the fan (7); The storage display module is used to store and display power distribution system data; the storage display module comprises a second controller, a second communication module, a display screen (5), and a memory, and the second controller is respectively connected to the second communication module, the display screen (5), and the memory; The second controller is connected to the button (4); the interface (6) is connected to the memory through the second controller; The controller 1 is connected to the controller 2 in sequence through the communication module 1, the communication module 2 and the controller 2.

6. A power distribution system protection system according to claim 5, characterized in that: The processing module includes a current and voltage processing module, a photoelectric processing module, a vibration processing module, and a temperature processing module. The current and voltage processing module, the photoelectric processing module, the vibration processing module, and the temperature processing module are all connected to the controller, and the current and voltage processing module, the photoelectric processing module, the vibration processing module, and the temperature processing module are all connected to the sensor group; the photoelectric processing module and the temperature processing module are respectively connected to the driving module.

7. A power distribution system protection system according to claim 6, characterized in that: The photoelectric processing modules are respectively connected to the photoelectric sensor groups, the vibration sensor groups are connected to the vibration sensor groups, the current and voltage processing modules are connected to the current and voltage sensor groups, and the temperature processing modules are connected to the temperature sensor groups.

8. A power distribution system protection system according to claim 6, characterized in that: The photoelectric processing module includes a primary photoelectric processing module, a secondary photoelectric processing module, and a tertiary photoelectric processing module, which are connected in sequence; the secondary photoelectric processing module is connected to the driving module; the tertiary photoelectric processing module is connected to the controller; The photoelectric sensor 1 is connected to the photoelectric processing module 1; the photoelectric sensor 2 is connected to the photoelectric processing module 2; and the photoelectric sensor 3 is connected to the photoelectric processing module 3.

9. A power distribution system protection system according to claim 5, characterized in that: The driving module comprises an indicator light driving module and a motor driving module. The controller 1 and the processing module respectively drive the indicator light group through the indicator light driving module. The controller 1 drives the motor to work through the motor driving module. The motor works to drive the fan (7) to work and cool down.

10. A power distribution system protection method, applied to a power distribution system protection system according to claims 5 to 9, characterized in that: The method comprises: Step S1: Photoelectric sensor 1 detects whether the cabinet door is open; when it is detected that the cabinet door is open, step S2 is executed; when it is detected that the cabinet door is not open, step S1 is repeated; Step S2: Photoelectric sensor 1 transmits a control signal to the primary photoelectric processing module, the primary photoelectric processing module is turned on, the secondary photoelectric processing module and photoelectric sensor 2 are powered, and photoelectric sensor 2 starts to detect whether the rack is in the initial position; If the photoelectric sensor 2 detects that the rack is in the initial position, repeat step S2; If the photoelectric sensor 2 detects that the rack is not in the initial position, step S3 is executed; Step S3: the photoelectric sensor 2 transmits a control signal to the secondary photoelectric processing module, the secondary photoelectric processing module is turned on, the tertiary photoelectric processing module and the photoelectric sensor 3 are powered, and the photoelectric sensor 3 starts to detect whether the rack passes through the specified position, and further determines the movement state of the rack; If the photoelectric sensor 3 confirms that the rack has not passed the specified position, repeat step S3; If the photoelectric sensor 3 confirms that the rack has passed the specified position, step S4 is executed; Step S4: Photoelectric sensor 3 transmits a control signal to a three-stage photoelectric processing module, and the three-stage photoelectric processing module outputs a control signal to controller 1, and controller 1 automatically performs a tripping operation.

Images