Circuit breaker, power distribution cabinet and power distribution system

Abstract

The invention relates to the technical field of power equipment, and provides a circuit breaker, a power distribution cabinet and a power distribution system. The circuit breaker is applied to the power distribution cabinet. The power distribution cabinet is provided with an induction member for detecting the opening and closing state of the cabinet door. The circuit breaker comprises a control module. The control module is used for being electrically connected with the induction part and is configured to determine the opening and closing state of the cabinet door based on the induction signal of the induction part and turn down the trigger parameter of the circuit breaker in response to the opening state of the cabinet door. Therefore, the fault current can be cut off more quickly, the duration and strength of the fault current are reduced, the risk of injury to operators is reduced, and the safety is improved.

Description

Technical Field

[0001] The present application relates to the technical field of electric power equipment, and in particular to a circuit breaker, a power distribution cabinet and a power distribution system. Background Art

[0002] In the related art, circuit breakers are often installed in power distribution cabinets to provide overload protection, short circuit protection, circuit control and other functions to improve the safety of the power distribution cabinet. However, there is a lack of coordination mechanism between the circuit breaker and the state of the power distribution cabinet door. When the circuit breaker is in normal working state and the cabinet door is opened, there are certain safety hazards when the operator repairs the power distribution cabinet. Summary of the invention

[0003] The embodiments of the present application provide a circuit breaker, a distribution cabinet and a distribution system. When the cabinet door is in an open state, the trigger parameters of the circuit breaker are lowered to make it easier for the circuit breaker to meet the conditions for switching from a closed state to an open state. As a result, the fault current can be cut off more quickly, the duration and intensity of the fault current can be reduced, the risk of injury to operators can be reduced, and safety can be improved.

[0004] In order to achieve the above-mentioned object, according to a first aspect of the present application, a circuit breaker is provided, which is applied to a power distribution cabinet, wherein the power distribution cabinet is provided with a sensing element for detecting the opening and closing state of a cabinet door, and the circuit breaker comprises:

[0005] The control module is used to be electrically connected to the sensing element and is configured to determine the opening and closing state of the cabinet door based on the sensing signal of the sensing element, and to lower the triggering parameter of the circuit breaker in response to the cabinet door being in the open state.

[0006] Optionally, the circuit breaker further comprises:

[0007] A parameter setting module is used to set the triggering parameters of the circuit breaker, and the parameter setting module is electrically connected to the control module.

[0008] Optionally, the circuit breaker further comprises:

[0009] A first detection module, configured to detect operating electrical parameters of a main circuit of the circuit breaker, the first detection module being electrically connected to the control module;

[0010] The control module is also electrically connected to an alarm module, and the control module is configured to send an alarm signal to the alarm module in response to the cabinet door being in an open state and the operating electrical parameters of the main circuit being greater than or equal to the lowered trigger parameters.

[0011] Optionally, the trigger parameter includes a leakage protection threshold parameter, and the circuit breaker further includes:

[0012] The second detection module is configured to detect the leakage current parameter of the circuit breaker. The second detection module is electrically connected to the control module. The control module is also configured to drive the circuit breaker to switch from the closed state to the open state in response to the cabinet door being in an open state and the leakage current parameter being greater than or equal to the lowered leakage protection threshold parameter.

[0013] Optionally, the circuit breaker further comprises:

[0014] A communication module is electrically connected to the control module, and the communication module is configured to be electrically connected to the terminal.

[0015] Optionally, the circuit breaker is set with a preset maintenance time, and the circuit breaker further includes:

[0016] A recording module, configured to record the opening time parameters of the cabinet door;

[0017] A storage module, electrically connected to the recording module, and used to store the opening time parameter;

[0018] Among them, the storage module is electrically connected to the control module, and the control module is also configured to drive the communication module to send a maintenance reminder signal to the terminal in response to the interval between the current time and the last opening time of the cabinet door being greater than or equal to the preset maintenance duration.

[0019] Optionally, the circuit breaker further comprises:

[0020] A display module is electrically connected to the first detection module and the second detection module, and is used to display the operating electrical parameters of the main circuit of the circuit breaker and the leakage current parameters of the circuit breaker. The display module is also electrically connected to the control module, and the control module is also configured to drive the display module to light up the screen in response to the cabinet door being in an open state.

[0021] Optionally, the circuit breaker further comprises:

[0022] The third detection module is configured to detect the fault information parameters of the circuit breaker, and the third detection module is electrically connected to the display module and the communication module.

[0023] Optionally, the circuit breaker further comprises:

[0024] The health management module is configured to detect the remaining life of the circuit breaker and the degree of damage to its components, and the health management module is electrically connected to the display module.

[0025] Optionally, the circuit breaker further comprises:

[0026] The lighting module is electrically connected to the control module, and the control module is further configured to drive the lighting module to illuminate in response to the cabinet door being in an open state.

[0027] According to a second aspect of the present application, a power distribution cabinet is provided, comprising:

[0028] Cabinet;

[0029] A cabinet door is rotatably mounted on the cabinet body;

[0030] A sensor installed on the cabinet body or the cabinet door, and configured to obtain an opening or closing state of the cabinet door;

[0031] As the aforementioned circuit breaker;

[0032] Wherein, the control module is electrically connected to the induction element.

[0033] According to a third aspect of the present application, there is provided a power distribution system, comprising:

[0034] terminal;

[0035] A circuit breaker as mentioned above, or a switchboard as mentioned above;

[0036] Wherein, the terminal includes a remote operation module and an identity authentication module, the remote operation module has a locked state and an unlocked state, and when the cabinet door is in an open state, the remote operation module is configured to switch from the locked state to the unlocked state in response to the operator being authenticated by the identity authentication module.

[0037] In the circuit breaker, power distribution cabinet and power distribution system of the embodiment of the present application, the opening and closing state of the cabinet door of the power distribution cabinet is detected by the induction component. When the cabinet door is in the open state, the control module can lower the trigger parameter of the circuit breaker after receiving the cabinet door opening signal, so that the circuit breaker can more easily meet the conditions for switching from the closed state to the open state. Therefore, when the cabinet door is opened to inspect the power distribution cabinet, if there is a fault current in the power distribution cabinet during the inspection process, the circuit breaker can cut off the fault current more quickly, reduce the duration and intensity of the fault current, reduce the risk of injury to the operator, and improve safety.

[0038] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0040] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0041] Figure 1 is one of the structural schematic diagrams of the circuit breaker provided in the exemplary embodiment of the present application;

[0042] Figure 2 This is the second structural schematic diagram of the circuit breaker provided in the exemplary embodiment of the present application;

[0043] Figure 3 This is the third structural schematic diagram of the circuit breaker provided in the exemplary embodiment of the present application;

[0044] Figure 4 This is the fourth structural schematic diagram of the circuit breaker provided in the exemplary embodiment of the present application;

[0045] Figure 5 This is the fifth structural schematic diagram of the circuit breaker provided in the exemplary embodiment of the present application;

[0046] Figure 6 This is the sixth structural schematic diagram of the circuit breaker provided in the exemplary embodiment of the present application;

[0047] Figure 7 This is the seventh structural schematic diagram of the circuit breaker provided in the exemplary embodiment of the present application;

[0048] Figure 8 This is the eighth structural schematic diagram of the circuit breaker provided in the exemplary embodiment of the present application;

[0049] Fig. 9 is a ninth structural schematic diagram of a circuit breaker provided in an exemplary embodiment of the present application;

[0050] Fig.10 is a schematic diagram of the structure of a power distribution cabinet provided in an exemplary embodiment of the present application;

[0051] Fig.11 It is a schematic diagram of the structure of a terminal provided in an exemplary embodiment of the present application.

[0052] Description of reference numerals:

[0053] 1. Circuit breaker; 11. Control module; 12. Parameter setting module; 13. First detection module; 14. Alarm module; 15. Second detection module; 16. Communication module; 17. Recording module; 18. Storage module; 19. Display module; 110. Third detection module; 111. Health management module; 112. Lighting module;

[0054] 2. Power distribution cabinet; 21. Cabinet body; 22. Cabinet door;

[0055] 3. Induction parts;

[0056] 4. Terminal; 41. Remote operation module; 42. Identity authentication module. DETAILED DESCRIPTION

[0057] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0058] According to the first aspect of the present application, referring to Figures 1 to 9 The present application provides a circuit breaker 1. The circuit breaker 1 is applied to a power distribution cabinet 2. The power distribution cabinet 2 is provided with a sensing element 3 for detecting the opening and closing state of a cabinet door 22. The circuit breaker 1 includes a control module 11. The control module 11 is used to be electrically connected to the sensing element 3, and is configured to determine the opening and closing state of the cabinet door 22 based on the sensing signal of the sensing element 3, and in response to the cabinet door being in an open state, lower the trigger parameter of the circuit breaker 1.

[0059] In the embodiment of the present application, the opening and closing state of the cabinet door 22 of the power distribution cabinet 2 is detected by the induction member 3. When the cabinet door 22 is in the open state, after the control module 11 receives the cabinet door 22 opening signal, the trigger parameter of the circuit breaker 1 can be lowered, so that the circuit breaker 1 can more easily meet the conditions for switching from the closed state to the open state. Therefore, when the cabinet door 22 is opened to inspect the power distribution cabinet 2, if there is a fault current in the power distribution cabinet 2 during the inspection process, the circuit breaker 1 can cut off the fault current more quickly, reduce the duration and intensity of the fault current, reduce the risk of injury to the operator, and improve safety.

[0060] It is understandable that the value of the trigger parameter is reduced so that the circuit breaker 1 can more easily meet the condition of switching from the closed state to the open state, and the safety of the operator when working with the cabinet door 22 open will be better guaranteed.

[0061] For example, the trigger parameters include overcurrent protection multiple parameters. When the induction element 3 detects that the cabinet door 22 switches from the closed state to the open state and sends a cabinet door 22 opening signal to the control module 11, the control module 11 can reduce the overcurrent protection multiple set for the normal operation of the circuit breaker 1 from 5 times to 2 times. At this time, if an arc or other phenomenon occurs in the distribution cabinet 2 during the maintenance process, the circuit breaker 1 can switch from the closed state to the open state at the beginning of the fault arc, thereby quickly cutting off the fault current, reducing the duration and intensity of the fault current, and effectively reducing the risk of injury to operators by the arc.

[0062] For example, the trigger parameters include leakage protection threshold parameters. When the induction element 3 detects that the cabinet door 22 switches from the closed state to the open state and sends a cabinet door 22 opening signal to the control module 11, the control module 11 can reduce the leakage protection threshold set for the normal operation of the circuit breaker 1 from 200mA (milliamperes) to 100mA, and at the same time shorten the action time of the protection action. At this time, if leakage occurs in the distribution cabinet 2 during the maintenance process, when the leakage current exceeds 100mA, the circuit breaker 1 can quickly switch from the closed state to the open state to protect the operator from leakage damage.

[0063] It should be noted that if no safety problem occurs during the maintenance process, after the operator closes the cabinet door 22, the control module 11 can adjust the trigger parameter to the initial value.

[0064] In some embodiments, the sensing element 3 includes a micro switch, a proximity sensor, a Hall sensor, etc. The sensing element 3 can be installed at the connection between the cabinet body 21 and the cabinet door 22 of the power distribution cabinet 2, ensuring that the sensing element 3 can obtain the opening and closing state of the cabinet door 22 in real time and accurately, and convert the opening state or closing state of the cabinet door 22 into a stable and clear electrical signal and then send it to the control module 11. Among them, the sensing element 3 and the control module 11 are electrically connected by a wiring harness with good anti-interference performance to ensure that the electrical signal can be efficiently and reliably transmitted to the control module 11.

[0065] In some embodiments, the control module 11 is a controller. For example, the control module 11 is an MCU (microcontroller unit), so that the control module 11 has strong data processing capabilities and can quickly respond to the opening and closing state signal of the cabinet door 22 to drive the circuit breaker 1 to lower the trigger parameter.

[0066] like Figure 1 As shown, in some embodiments, the circuit breaker 1 further includes a parameter setting module 12. The parameter setting module 12 is used to set the triggering parameters of the circuit breaker 1. The parameter setting module 12 is electrically connected to the control module 11.

[0067] It is understandable that the opening and closing state of the cabinet door 22 of the power distribution cabinet 2 is detected by the induction element 3. When the cabinet door 22 is in the open state, the control module 11 can send a control signal to the parameter setting module 12 after receiving the cabinet door 22 opening signal. At this time, the parameter setting module 12 can lower the trigger parameter of the circuit breaker 1, so that the circuit breaker 1 can more easily meet the conditions for switching from the closed state to the open state. Therefore, when the cabinet door 22 is opened to inspect the power distribution cabinet 2, if there is a fault current in the power distribution cabinet 2 during the inspection process, the circuit breaker 1 can cut off the fault current more quickly, reduce the duration and intensity of the fault current, reduce the risk of injury to the operator, and improve safety.

[0068] In some embodiments, the parameter setting module 12 is a parameter regulator. For example, at least two groups of trigger parameters are set in the parameter setting module 12 or the storage module 18 of the circuit breaker 1. When the cabinet door 22 is in a closed state, the parameter setting module 12 calls one of the groups of trigger parameters stored in itself or in the storage module 18 as the tripping threshold when the circuit breaker 1 is in normal operation; when the cabinet door 22 is in an open state, the parameter setting module 12 calls another group of trigger parameters stored in itself or in the storage module 18 as the tripping threshold when the circuit breaker 1 is in normal operation.

[0069] It is understandable that when the circuit breaker 1 is operating normally, a trigger parameter can be set through the parameter setting module 12. If the operating electrical parameter in the circuit breaker 1 exceeds the set trigger parameter, it means that it is currently in an abnormal operating state or a fault exists. At this time, the circuit breaker 1 can be switched from the closed state to the open state to ensure the safety of the distribution cabinet 2.

[0070] like Figure 2 As shown, in some embodiments, the circuit breaker 1 further includes a first detection module 13. The first detection module 13 is configured to detect the operating electrical parameters of the main circuit of the circuit breaker 1. The first detection module 13 is electrically connected to the control module 11. The control module 11 is also electrically connected to the alarm module 14, and the control module 11 is configured to send an alarm signal to the alarm module 14 in response to the cabinet door 22 being in an open state and the operating electrical parameters of the main circuit being greater than or equal to the lowered trigger parameters.

[0071] It is understandable that when the first detection module 13 detects that the operating electrical parameters of the main circuit of the circuit breaker 1 exceed the trigger parameters, the circuit breaker 1 may be in an overload, overcurrent, short circuit, etc. state, at which time the circuit breaker 1 will switch from the closed state to the open state. At the same time, after receiving the information that the operating electrical parameters exceed the trigger parameters, the control module 11 sends an alarm signal to the alarm module 14 to remind the on-site operators to stay away from the dangerous area and ensure the safety of the personnel.

[0072] In some embodiments, the trigger parameter includes an overcurrent protection multiple parameter. The first detection module 13 can detect the current of the main circuit of the circuit breaker 1. When the induction component 3 detects that the cabinet door 22 switches from the closed state to the open state and sends a cabinet door 22 opening signal to the control module 11, the parameter setting module 12 can reduce the overcurrent protection multiple set for the normal operation of the circuit breaker 1 from 5 times to 2 times. At this time, if an arc or other phenomenon occurs in the distribution cabinet 2 during the maintenance process, the circuit breaker 1 can switch from the closed state to the open state in the early stage of the fault arc, thereby quickly cutting off the fault current, reducing the duration and intensity of the fault current, and effectively reducing the risk of injury to the operator by the arc.

[0073] In some embodiments, the alarm module 14 is an audible and visual alarm. The audible and visual alarm can be installed on the outer surface of the circuit breaker 1 or the inner surface of the cabinet 21.

[0074] like Figure 3 As shown, in some embodiments, the trigger parameter includes a leakage protection threshold parameter. The circuit breaker 1 also includes a second detection module 15. The second detection module 15 is configured to detect a leakage current parameter of the circuit breaker 1. The second detection module 15 is electrically connected to the control module 11. The control module 11 is also configured to drive the circuit breaker 1 to switch from the closed state to the open state in response to the cabinet door 22 being in an open state and the leakage current parameter being greater than or equal to the lowered leakage protection threshold parameter.

[0075] It is understandable that when the induction element 3 detects that the cabinet door 22 switches from the closed state to the open state and sends the cabinet door 22 opening signal to the control module 11, the parameter setting module 12 can lower the leakage protection threshold set for the normal operation of the circuit breaker 1. At this time, if leakage occurs in the power distribution cabinet 2 during the maintenance process, and the leakage current exceeds the lowered leakage protection threshold parameter, the control module 11 can drive the circuit breaker 1 to switch from the closed state to the open state to prevent the operator from being injured by leakage.

[0076] For example, when the induction element 3 detects that the cabinet door 22 switches from the closed state to the open state and sends the cabinet door 22 opening signal to the control module 11, the parameter setting module 12 can reduce the leakage protection threshold set for the normal operation of the circuit breaker 1 from 200mA to 100mA, and can also shorten the action time of the protection action. At this time, if leakage occurs in the power distribution cabinet 2 during the maintenance process, when the leakage current exceeds 100mA, the circuit breaker 1 can quickly switch from the closed state to the open state to protect the operator from leakage damage.

[0077] It should be noted that the control module 11 can also reduce the sensitivity of the leakage protection of the circuit breaker 1. The higher the sensitivity, the easier it is for the circuit breaker 1 to open. For example, the protection action time of the circuit breaker 1 can be reduced from 100ms (milliseconds) to 0ms.

[0078] In the embodiment of the present application, by automatically reducing the arc protection measures of the protection multiple and the leakage protection mechanism of intelligently adjusting the sensitivity according to the state of the cabinet door 22, all-round and multi-level safety protection is provided for the operator, which effectively reduces the probability of various safety accidents and effectively ensures the life safety of personnel and the stable operation of equipment.

[0079] like Figure 4 As shown, in some embodiments, the circuit breaker 1 further includes a communication module 16. The communication module 16 is electrically connected to the control module 11. The communication module 16 is configured to be electrically connected to the terminal 4.

[0080] It is understandable that the communication module 16 can send the operating electrical parameters detected by the first detection module 13 and the leakage current parameters detected by the second detection module 15 to the terminal 4 , so that the terminal 4 can display various operating data of the circuit breaker 1 in real time.

[0081] In some embodiments, the communication module 16 can use wired communication or wireless communication to send signals to the terminal 4. For example, the communication module 16 is an antenna. Or, the communication module 16 is a signal transmission connector, and the signal transmission connector transmits the signal to the terminal 4 through a connecting cable.

[0082] In some embodiments, the terminal 4 includes fixed terminals 4 such as operation and maintenance centers, and mobile terminals 4 such as mobile phones and pads.

[0083] like Figure 5 As shown, in some embodiments, the circuit breaker 1 is set with a preset maintenance duration. The circuit breaker 1 also includes a recording module 17 and a storage module 18. The recording module 17 is configured to record the opening time parameters of the cabinet door 22. The storage module 18 is electrically connected to the recording module 17 and is used to store the opening time parameters. Among them, the storage module 18 is electrically connected to the control module 11, and the control module 11 is also configured to drive the communication module 16 to send a maintenance prompt signal to the terminal 4 in response to the interval between the current time and the last opening time of the cabinet door 22 being greater than or equal to the preset maintenance duration.

[0084] It is understandable that after the recording module 17 can record the opening time parameter of the cabinet door 22, the opening time parameter can be sent to the storage module 18, thereby storing the time when the cabinet door 22 is opened this time. Generally speaking, the time when the cabinet door 22 is opened corresponds to the maintenance time of the power distribution cabinet 2. Therefore, the cooperation of the recording module 17 and the storage module 18 can record in detail the maintenance time of each distribution cabinet 2, and store the maintenance time parameter in the storage module 18. If the interval between the current time and the last opening time of the cabinet door 22 is greater than or equal to the preset maintenance time, the control module 11 can drive the communication module 16 to send a maintenance reminder signal to the terminal 4, thereby prompting the operation and maintenance personnel to promptly and comprehensively repair the power distribution cabinet 2, and effectively prevent the occurrence of potential faults.

[0085] In some embodiments, the recording module 17 may use an RTC (Real-Time Clock). The storage module 18 may use a non-volatile memory. The storage module 18 may not only store the opening time parameters of the cabinet door 22, but also store the contents of the related maintenance operations during the maintenance process. The storage module 18 may also store the leakage time, leakage location and corresponding electrical parameters to provide data support for subsequent troubleshooting and maintenance.

[0086] In some embodiments, the current time can be directly obtained by the control module 11 through the network time protocol. Alternatively, the control module 11 can be connected to an RTC module (Real-Time Clock) to obtain the current time. Alternatively, the control module 11 can directly obtain the current time from the terminal 4.

[0087] In some embodiments, the preset maintenance duration can be set to one month, three months, half a year, etc.

[0088] In some embodiments, the communication module 16 can send a maintenance reminder signal to the operation and maintenance center and the mobile phone of the corresponding operator at the same time. The maintenance reminder signal includes a maintenance reminder pop-up window sent to the display of the operation and maintenance center, a text message sent to the mobile phone of the corresponding operator, and a notification message sent to the mobile phone APP of the corresponding operator.

[0089] like Figure 6 As shown, in some embodiments, the circuit breaker 1 further includes a display module 19. The display module 19 is electrically connected to the first detection module 13 and the second detection module 15, and is used to display the operating electrical parameters of the main circuit of the circuit breaker 1 and the leakage current parameters of the circuit breaker 1. The display module 19 is also electrically connected to the control module 11. The control module 11 is also configured to drive the display module 19 to light up the screen in response to the cabinet door 22 being in the open state.

[0090] It is understandable that, by providing the display module 19 on the circuit breaker 1, the display module 19 can display the operating electrical parameters and leakage current parameters of the circuit breaker 1 detected by the first detection module 13 and the second detection module 15. When the cabinet door 22 is in the open state, the control module 11 can wake up the display module 19, so that the operator can directly query various parameters of the circuit breaker 1 through the display module 19.

[0091] In some embodiments, the display module 19 can also display other operating parameters of the circuit breaker 1 and status information of the circuit breaker 1. The display module 19 can be a touch-screen LCD screen, and the display module 19 can have an operation interface and an operation guide interface to guide the operator on how to operate or repair. The interactive function of the display module 19 can simplify the operation process of the circuit breaker 1, improve the operator's operating experience and work efficiency, and reduce risks and errors caused by complex operations.

[0092] It should be noted that when the cabinet door 22 is in a closed state, the display module 19 is also in a closed state to save energy.

[0093] like Figure 7As shown, in some embodiments, the circuit breaker 1 further includes a third detection module 110. The third detection module 110 is configured to detect fault information parameters of the circuit breaker 1. The third detection module 110 is electrically connected to the display module 19 and the communication module 16.

[0094] It is understandable that after the third detection module 110 detects the fault information parameters, it will send a signal to the display module 19 and display it in the form of a pop-up window on the display module 19 to ensure that the operator can notice the fault information. The third maintenance module will also send the detected fault information parameters to the terminal 4 through the communication module 16, thereby reminding the operation and maintenance personnel of the terminal 4 to check the distribution cabinet 2 in time. At the same time, it can also enable the operation and maintenance personnel to grasp the fault situation in a timely and comprehensive manner, making the equipment maintenance work more targeted and efficient. It can quickly formulate and implement effective troubleshooting and repair plans, significantly shorten the fault handling time, improve the availability and reliability of the power system, and reduce the power outage time and economic losses caused by equipment failure.

[0095] In some embodiments, the fault information parameters include key abnormalities or fault information of the circuit breaker 1, for example, the circuit breaker 1 is about to reach an overload warning value, the terminal temperature is close to a warning value, etc. The fault information parameters also include voltage abnormality parameters, current abnormality parameters, temperature abnormality parameters, etc. of the circuit breaker 1. For example, the third maintenance module includes a voltage detector, a current detector, and a temperature detector. When the circuit breaker 1 is operating normally, it has a preset voltage, a preset current, and a preset temperature. When the third detection module 110 detects that the actual voltage exceeds the preset voltage, the actual current exceeds the preset current, and / or the actual temperature exceeds the preset temperature, the abnormal voltage value, the abnormal current value, and the abnormal temperature value are displayed through the display module 19, and the abnormal voltage value, the abnormal current value, and the abnormal temperature value are sent to the terminal 4 through the communication module 16.

[0096] like Figure 8 As shown, in some embodiments, the circuit breaker 1 further includes a health management module 111. The health management module 111 is configured to detect the remaining life and component damage of the circuit breaker 1. The health management module 111 is electrically connected to the display module 19.

[0097] It is understandable that the health management module 111 can record the remaining life of the circuit breaker 1 and the degree of damage of each component, and display the remaining life parameters and component damage parameters on the display module 19 so that the operator can quickly know the current status of the circuit breaker 1.

[0098] In some embodiments, the health management module 111 includes a timer, in which the service life of the circuit breaker 1 and the degree of damage of each component after a corresponding length of use are preset, so as to time the remaining life of the circuit breaker 1 and the degree of damage of the components during the entire service life. The health management module 111 may also include a sensor, which can obtain parameters of the circuit breaker 1 during normal operation, such as temperature parameters, current parameters, voltage parameters, etc. The health management module 111 can predict the remaining life of the circuit breaker 1 and the degree of damage of the components based on the above parameters and the historical data training model.

[0099] like Fig. 9 As shown, in some embodiments, the circuit breaker 1 further includes a lighting module 112. The lighting module 112 is electrically connected to the control module 11. The control module 11 is also configured to drive the lighting module 112 to illuminate in response to the cabinet door 22 being in an open state.

[0100] It is understandable that when the power distribution cabinet 2 is installed in a dark environment, if there is no lighting, potential safety hazards may easily occur during the maintenance process. By setting the lighting module 112 on the circuit breaker 1, when the cabinet door 22 is in the open state, the controller can drive the lighting module 112 to illuminate, thereby providing the operator with necessary lighting, improving the safety of the operator in a dark environment, and avoiding misoperation and safety accidents caused by insufficient light.

[0101] In some embodiments, the lighting module 112 is an LED light strip. The LED light strip can be arranged on the outer surface of the circuit breaker 1, on the peripheral side of the display module 19, on the rear side of the display module 19, or on the inner surface of the cabinet 21. When the cabinet door 22 is in an open state, the LED light strip is powered to illuminate the power distribution cabinet 2.

[0102] It should be noted that when the cabinet door 22 is in a closed state, the lighting module 112 is also in a closed state to save energy.

[0103] According to a second aspect of the present application, a power distribution cabinet 2 is provided, and the power distribution cabinet 2 includes the above-mentioned circuit breaker 1. The power distribution cabinet 2 has all the beneficial effects of the above-mentioned circuit breaker 1, and the present application will not repeat them here.

[0104] In some embodiments, reference Fig.10 The power distribution cabinet 2 includes a cabinet body 21, a cabinet door 22, a sensor 3, and the circuit breaker 1 in the above-mentioned embodiment. The cabinet door 22 is rotatably mounted on the cabinet body 21. The sensor 3 is mounted on the cabinet body 21 or the cabinet door 22. The sensor 3 is configured to obtain the opening and closing state of the cabinet door 22. The control module 11 is electrically connected to the sensor 3.

[0105] In some embodiments, the sensor 3 is installed on the cabinet 21. Alternatively, the sensor is installed on the cabinet door 22. It should be noted that the sensor 3 needs to be installed at the connection between the cabinet 21 and the cabinet door 22 to ensure that the sensor 3 can obtain the opening and closing status of the cabinet door 22 in real time and accurately.

[0106] In some embodiments, the sensing element 3 includes a micro switch, a proximity sensor, a Hall sensor, etc. The sensing element 3 can convert the open state or closed state of the cabinet door 22 into a stable and clear electrical signal and send it to the control module 11. Among them, the sensing element 3 and the control module 11 are electrically connected by a wiring harness with good anti-interference performance to ensure that the electrical signal can be efficiently and reliably transmitted to the control module 11.

[0107] According to a third aspect of the present application, a power distribution system is provided, the power distribution system comprising the above-mentioned circuit breaker 1 or the above-mentioned power distribution cabinet 2. The power distribution system has all the beneficial effects of the above-mentioned circuit breaker 1 or the above-mentioned power distribution cabinet 2, and the present application will not repeat them here.

[0108] like Fig.11 As shown, the power distribution system further includes a terminal 4. The terminal 4 includes a remote operation module 41 and an identity authentication module 42. The remote operation module 41 has a locked state and an unlocked state. When the cabinet door 22 is in an open state, the remote operation module 41 is configured to switch from the locked state to the unlocked state in response to the operator being authenticated by the identity authentication module 42.

[0109] It is understandable that the state of the circuit breaker 1 can be switched through the remote operation module 41 of the terminal 4. For example, the remote operation module 41 can be used to switch the circuit breaker 1 from the closed state to the open state, or to switch the circuit breaker 1 from the open state to the closed state.

[0110] When the cabinet door 22 is in a closed state, the remote operation module 41 is in an unlocked state. At this time, the remote operation module 41 can be directly operated without identity authentication. Alternatively, when the cabinet door 22 is in a closed state, the remote operation module 41 is in a locked state, and it is necessary to first perform identity authentication and then unlock the remote operation module 41 before driving the circuit breaker 1 to operate.

[0111] When the cabinet door 22 is in the open state, the remote operation module 41 is in the locked state to prevent the on-site operator from accidentally touching or misoperating the remote operation module 41 when repairing the power distribution cabinet 2, thereby ensuring the safety of the power system and on-site operators. At this time, the remote operation and maintenance personnel need to perform identity authentication first, and after passing the identity authentication, the remote operation module 41 is switched from the locked state to the unlocked state before the relevant remote operation can be performed.

[0112] Therefore, when the cabinet door 22 is in the open state, the remote operation module 41 needs to perform safety verification to ensure the safety of on-site operators during the remote operation process, thereby improving the stability and intelligent management level of the entire power distribution system.

[0113] In some embodiments, the remote operation module 41 is electrically connected to the communication module 16 of the circuit breaker 1 , so that the remote control signal is sent to the control module 11 through the communication module 16 to realize the action of the circuit breaker 1 .

[0114] In some embodiments, the remote operation module 41 includes control buttons, keys, keyboards, etc. located in the operation and maintenance center. The identity authentication module 42 may include at least one of a face authentication module, a fingerprint authentication module, a pupil authentication module, and a sound authentication module, thereby ensuring through multiple identity authentication that remote operation with the cabinet door 22 in the open state is allowed only after the safety conditions are met. In this way, unauthorized remote operation can be effectively prevented to ensure the safety of the power system and on-site operators.

[0115] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0116] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0117] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0118] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A circuit breaker (1), applied to a power distribution cabinet (2), wherein the power distribution cabinet (2) is provided with a sensor (3) for detecting the opening and closing state of a cabinet door (22), characterized in that: The circuit breaker (1) comprises: A control module (11) is used to be electrically connected to the sensing element (3) and is configured to determine the open or closed state of the cabinet door (22) based on the sensing signal of the sensing element (3), and to lower the triggering parameter of the circuit breaker (1) in response to the cabinet door being in the open state.

2. The circuit breaker (1) according to claim 1, characterized in that: The circuit breaker (1) further comprises: A parameter setting module (12) is used to set the triggering parameters of the circuit breaker (1); the parameter setting module (12) is electrically connected to the control module (11).

3. The circuit breaker (1) according to claim 2, characterized in that: The circuit breaker (1) further comprises: A first detection module (13) is configured to detect operating electrical parameters of a main circuit of the circuit breaker (1), the first detection module (13) being electrically connected to the control module (11); The control module (11) is also electrically connected to an alarm module (14), and the control module (11) is configured to send an alarm signal to the alarm module (14) in response to the cabinet door (22) being in an open state and the operating electrical parameter of the main circuit being greater than or equal to the lowered trigger parameter.

4. The circuit breaker (1) according to claim 3, characterized in that: The trigger parameter includes a leakage protection threshold parameter, and the circuit breaker (1) further includes: The second detection module (15) is configured to detect a leakage current parameter of the circuit breaker (1); the second detection module (15) is electrically connected to the control module (11); the control module (11) is further configured to drive the circuit breaker (1) to switch from a closed state to an open state in response to the cabinet door (22) being in an open state and the leakage current parameter being greater than or equal to the lowered leakage protection threshold parameter.

5. The circuit breaker (1) according to claim 4, characterized in that: The circuit breaker (1) further comprises: A communication module (16) is electrically connected to the control module (11), and the communication module (16) is configured to be electrically connected to the terminal (4).

6. The circuit breaker (1) according to claim 5, characterized in that: The circuit breaker (1) is set with a preset maintenance time, and the circuit breaker (1) also includes: A recording module (17) configured to record an opening time parameter of the cabinet door (22); A storage module (18), electrically connected to the recording module (17), and used for storing the opening time parameter; The storage module (18) is electrically connected to the control module (11), and the control module (11) is further configured to drive the communication module (16) to send a maintenance prompt signal to the terminal (4) in response to the interval between the current time and the last time the cabinet door (22) was opened being greater than or equal to the preset maintenance duration.

7. The circuit breaker (1) according to claim 5, characterized in that: The circuit breaker (1) further comprises: A display module (19) is electrically connected to the first detection module (13) and the second detection module (15), and is used to display the operating electrical parameters of the main circuit of the circuit breaker (1) and the leakage current parameters of the circuit breaker (1). The display module (19) is also electrically connected to the control module (11), and the control module (11) is also configured to drive the display module (19) to light up the screen in response to the cabinet door (22) being in an open state.

8. The circuit breaker (1) according to claim 7, characterized in that: The circuit breaker (1) further comprises: The third detection module (110) is configured to detect fault information parameters of the circuit breaker (1), and the third detection module (110) is electrically connected to the display module (19) and the communication module (16).

9. The circuit breaker (1) according to claim 7, characterized in that: The circuit breaker (1) further comprises: A health management module (111) is configured to detect the remaining life of the circuit breaker (1) and the degree of component damage, and the health management module (111) is electrically connected to the display module (19).

10. The circuit breaker (1) according to any one of claims 1 to 9, characterized in that: The circuit breaker (1) further comprises: The lighting module (112) is electrically connected to the control module (11), and the control module (11) is further configured to drive the lighting module (112) to illuminate in response to the cabinet door (22) being in an open state.

11. A power distribution cabinet (2), characterized in that: include: Cabinet (21); A cabinet door (22) rotatably mounted on the cabinet body (21); A sensor (3) installed on the cabinet body (21) or the cabinet door (22), wherein the sensor (3) is configured to obtain an open or closed state of the cabinet door (22); The circuit breaker (1) according to any one of claims 1 to 10; Wherein, the control module (11) is electrically connected to the induction element (3).

12. A power distribution system, characterized in that: include: Terminal (4); The circuit breaker (1) according to any one of claims 1 to 10, or the distribution cabinet (2) according to claim 11; The terminal (4) comprises a remote operation module (41) and an identity authentication module (42); the remote operation module (41) has a locked state and an unlocked state; when the cabinet door (22) is in an open state, the remote operation module (41) is configured to switch from the locked state to the unlocked state in response to an operator being authenticated by the identity authentication module (42).

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