A circuit breaker unlocking control method and device and a circuit breaker

Abstract

The application provides a circuit breaker unlocking control method and device and a circuit breaker. The method comprises the following steps: in response to a triggering operation on an unlocking key, sending pre-unlocking information to a master control device and keeping a locked state; continuously monitoring whether an unlocking condition is met; after the unlocking condition is met, controlling a driving structure to execute circuit breaker unlocking; and the unlocking condition indicates that a system is in a safe state. The safety of the entire on-grid and off-grid system is improved, so as to avoid the situation that when communication between the circuit breaker and the master control device is abnormal, the master control device does not know that the circuit breaker is to be unlocked, and the safety risk caused by keeping running.

Description

Technical Field

[0001] This application relates to the field of power technology, and more specifically, to a circuit breaker unlocking control method, device, and circuit breaker. Background Technology

[0002] In grid-connected and off-grid power supply systems, after a circuit breaker trips, it typically enters a manual closing lockout state. A mechanical limit switch in the drive mechanism blocks the handle's closing path. The lockout can only be released and manual closing executed after maintenance personnel trigger the unlock button. To prevent accidental unlocking due to accidental button presses, existing solutions generally employ a long-press delay mechanism for the unlock button. This means that after a preset duration of continuous pressing, the drive mechanism releases the mechanical lock and reports the status to the upstream inverter.

[0003] However, the current operating method does not take into account the situation where the communication link between the circuit breaker and the inverter in the off-grid power supply system fails. In this case, even if you press and hold to unlock, the status report to the inverter after unlocking will not be delivered, and the inverter will not make adjustments based on the unlocked status, so there will still be a safety risk. Summary of the Invention

[0004] The purpose of this application is to provide a circuit breaker unlocking control method, device, and circuit breaker to address the shortcomings of the prior art and solve the security risks in existing grid-connected and off-grid systems.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows: In a first aspect, one embodiment of this application provides a circuit breaker unlocking control method, applied to a circuit breaker controller, the method comprising: In response to the triggering of the unlock button, a pre-unlock message is sent to the main control device and the locked state is maintained; The system continuously monitors whether the unlocking conditions are met. Once the unlocking conditions are met, the control drive structure is activated to unlock the circuit breaker. The unlocking conditions indicate that the system is in a safe state.

[0006] Optionally, the continuous monitoring of whether the unlocking condition is met, and the control of the drive structure to unlock the circuit breaker after the unlocking condition is met, includes: During the continuous triggering of the unlock button, the system continuously monitors whether the unlocking conditions are met. After the unlocking conditions are met, the control drive structure performs circuit breaker unlocking.

[0007] Optionally, the method further includes: During the continuous triggering of the unlock button, if it is detected that the unlock button is de-triggered, a pre-unlock release message is sent to the main control device.

[0008] Optionally, the step of sending pre-unlock information to the main control device and maintaining the locked state in response to the triggering operation of the unlock button includes: In response to a triggering operation on the unlock button, start a timer to count down the duration of the triggering operation; If the duration of the triggering operation is greater than or equal to the first preset duration, a pre-unlocking message is sent to the main control device and the locked state is maintained.

[0009] Optionally, the unlocking conditions include at least one of the following: Received an unlock permission command from the main control device; The difference in electrical parameters between the incoming and outgoing lines was found to be within the safety threshold. The delay duration has reached the preset delay length; The main control device output is detected to be off, and / or there is no voltage output on the load side.

[0010] Optionally, the step of controlling the drive structure to unlock the circuit breaker after the unlocking condition is met includes: After the unlocking conditions are met, the drive structure of the circuit breaker is controlled to move from the locked position to the unlocked position, and a timer is started; When the timer reaches the second preset duration, the circuit breaker's operating status is updated to manual mode. Send working status switching information to the main control device to instruct the circuit breaker to update to the manual mode.

[0011] Optionally, after updating the circuit breaker's operating state to manual mode when the timer reaches the second preset duration, the method further includes: If the unlocking conditions are not met, the control circuit breaker's drive mechanism is reset from the unlocked position to the locked position. Send lock status information and clear manual mode information to the main control device.

[0012] Optionally, after the unlocking condition is met and the control drive structure performs circuit breaker unlocking, the method further includes: Receive the locking command sent by the main control device; According to the locking command, the drive structure of the circuit breaker is controlled to reset from the unlocked position to the locked position.

[0013] Optionally, after the unlocking condition is met and the control drive structure performs circuit breaker unlocking, the method further includes: If the circuit breaker's open or closed state remains unchanged for more than a third preset time period, the drive structure of the circuit breaker will be reset from the unlocked position to the locked position.

[0014] Optionally, after the unlocking condition is met and the control drive structure performs circuit breaker unlocking, the method further includes: In response to a triggering operation on the unlock button, start a timer to count down the duration of the triggering operation; If the duration of the triggering operation is greater than or equal to the fourth preset duration, the drive structure of the circuit breaker is controlled to reset from the unlocked position to the locked position.

[0015] Optionally, the step of sending pre-unlock information to the main control device and maintaining the locked state in response to the triggering operation of the unlock button includes: In response to the triggering operation of the unlock button, a pre-unlock information is sent to the main control device, the locked state is maintained, and the pre-unlock indicator is displayed at the corresponding identification position of the circuit breaker.

[0016] Optionally, the method further includes: During the closing operation of the circuit breaker, the drive structure is prohibited from unlocking or resetting from the unlocked position.

[0017] Secondly, another embodiment of this application provides a circuit breaker unlocking control device, applied to the controller of a circuit breaker, the device comprising: The response module is used to respond to the trigger operation of the unlock button, send pre-unlock information to the main control device and maintain the locked state; The control module is used to continuously monitor whether the unlocking conditions are met. After the unlocking conditions are met, the control drive structure is used to unlock the circuit breaker. The unlocking conditions indicate that the system is in a safe state.

[0018] Thirdly, another embodiment of this application provides a circuit breaker, including: a processor and a memory, the memory storing machine-readable instructions executable by the processor, the processor being configured to execute the machine-readable instructions to perform the steps of any of the methods described in the first aspect above.

[0019] Fourthly, another embodiment of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, performs the steps of any of the methods described in the first aspect above.

[0020] The beneficial effects of this application are: In response to the triggering operation of the unlock button, the circuit breaker sends pre-unlock information to the main control device. Before confirming that the unlocking conditions are met, it does not unlock and continues to monitor. After the unlocking conditions are met, it controls the drive structure to execute the circuit breaker unlocking. This improves the safety of the entire grid-connected and off-grid system, so as to avoid the safety risks caused by the main control device not knowing that the circuit breaker needs to be unlocked and continuing to operate when there is a communication abnormality between the circuit breaker and the main control device. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This application provides a schematic diagram of a parallel / off-grid system structure as an embodiment of the present application. Figure 2 A schematic flowchart of a circuit breaker unlocking control method provided in an embodiment of this application; Figure 3 A schematic flowchart of a circuit breaker unlocking control method provided in another embodiment of this application; Figure 4 A schematic flowchart of a circuit breaker unlocking control method provided in another embodiment of this application; Figure 5 A schematic diagram of the structure of a circuit breaker unlocking control device provided in an embodiment of this application; Figure 6 This is a schematic diagram of the structure of a circuit breaker provided in an embodiment of this application. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the accompanying drawings in this application are for illustrative and descriptive purposes only and are not intended to limit the scope of protection of this application. Furthermore, it should be understood that the schematic drawings are not drawn to scale. The flowcharts used in this application illustrate operations implemented according to some embodiments of this application. It should be understood that the operations in the flowcharts may not be implemented in sequence, and steps without logical contextual relationships may be reversed or implemented simultaneously. In addition, those skilled in the art, guided by the content of this application, may add one or more other operations to the flowcharts, or remove one or more operations from the flowcharts.

[0024] Furthermore, the described embodiments are merely some, not all, of the embodiments of this application. The components of the embodiments of this application described and illustrated herein can typically be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0025] It should be noted that the term "comprising" will be used in the embodiments of this application to indicate the presence of the features declared thereafter, but does not exclude the addition of other features.

[0026] Figure 1 This is a schematic diagram of a parallel / off-grid system structure provided in an embodiment of this application, such as... Figure 1 As shown, the system includes: circuit breaker 01, main control equipment 02, and photovoltaic equipment 03.

[0027] The photovoltaic device 03 can be a photovoltaic array composed of photovoltaic panels, or it can be a photovoltaic device (photovoltaic panel) used as a unit of the smallest power supply unit (such as a household), without limitation. One end of the circuit breaker 01 is used to connect to the power grid, and the other end of the circuit breaker 01 is connected to one end of the main control device 02. The other end of the main control device 02 is connected to the aforementioned photovoltaic device 03. In the scenario including the photovoltaic device, the main control device 02 can be a photovoltaic main control device.

[0028] Optionally, the main control device 02 can be an inverter, an uninterruptible power supply (UPS), other types of backup power such as a backup generator, energy storage equipment, etc., or it can be a gateway (used as a communication relay device between the circuit breaker and other devices), or other control devices, such as a computer, server, etc., which can communicate with the circuit breaker. It should be noted that the circuit breaker 01 and the main control device 02 can be connected by wire or wireless means, without limitation.

[0029] For example, in a scenario where the main control device 02 is an inverter, a load can be connected between the inverter and the circuit breaker 01. Optionally, one or more loads can be connected between the circuit breaker and the inverter.

[0030] For example, the digital output (DO) terminal of the inverter can be connected to the digital input (DI) terminal of the circuit breaker; or, the inverter and the circuit breaker can also be connected via a bus (CAN) or through an interface corresponding to other communication protocols, without limitation.

[0031] In this embodiment, the circuit breaker 01 includes an unlock button, which is a mechanical button. Pressing the unlock button triggers the circuit breaker's controller to unlock. The unlock button may be partially located inside the circuit breaker 01's housing and partially located outside the housing. The portion outside the housing is for user operation, such as pressing.

[0032] For grid-connected and off-grid systems, if the main control device does not receive an unlocking signal after the circuit breaker is unlocked, the relevant equipment in the system, such as the inverter, will still be in operation and will not perform soft shutdown or synchronization adjustment, which may pose a safety hazard. This application provides a circuit breaker unlocking control method to unlock the circuit breaker only when the grid-connected and off-grid system meets the unlocking conditions, so as to ensure system safety.

[0033] Figure 2 This is a flowchart illustrating a circuit breaker unlocking control method according to an embodiment of this application, as shown below. Figure 2 As shown, the controller applied in the above-mentioned circuit breaker includes the following method: S201. In response to the trigger operation of the unlock button, send pre-unlock information to the main control device and maintain the locked state.

[0034] In this embodiment, after the user triggers the unlock button, the circuit breaker does not unlock directly. Instead, it first sends a pre-unlock message to the main control device. This means that the main control device is notified that it is about to unlock, but the unlocking action is not performed yet, and the device remains locked. This can also be understood as a pre-unlock state. This is to prevent communication between the circuit breaker and the main control device from being interrupted or having a poor signal. In such cases, the main control device may not receive the information and may not be able to make synchronous adjustments, which could lead to safety issues.

[0035] For example, the inverter may continue to operate, or the gateway may be unable to forward pre-unlock information to the inverter or power supply, which could lead to security risks.

[0036] S202. Continuously monitor whether the unlocking conditions are met. After the unlocking conditions are met, control the drive structure to unlock the circuit breaker.

[0037] The aforementioned unlocking conditions indicate that the system is in a safe state, that is, the current on-grid and off-grid system is in a safe state. This safe state also includes whether the main control equipment knows that the circuit breaker needs to be unlocked, whether it is in a safe ready state, and whether the on-grid and off-grid system is ready for safety.

[0038] After sending a pre-unlocking message to the main control device, the circuit breaker continuously monitors whether the current off-grid system meets the unlocking conditions. When it is determined that the unlocking conditions are met, the circuit breaker will be unlocked. Specifically, different types of circuit breakers may have different unlocking methods. For example, unlocking can be completed by controlling the drive structure, which may be a drive gear, an electronically controlled drive device (such as a trip unit), etc. There are no restrictions here.

[0039] In this embodiment, the circuit breaker responds to the trigger operation of the unlock button by sending pre-unlock information to the main control device. Before confirming that the unlocking conditions are met, it does not unlock and continues to monitor. After the unlocking conditions are met, it controls the drive structure to execute the circuit breaker unlocking. This improves the security of the entire parallel and off-grid system, so as to avoid the safety risks caused by the main control device not knowing that the circuit breaker needs to be unlocked when there is a communication abnormality between the circuit breaker and the main control device.

[0040] Optionally, the unlocking condition is a system-level security condition. Whether the unlocking condition is met depends mainly on the response and adjustment of the master control device. If the master control device does not receive the pre-unlocking information and does not make security preparations, the unlocking condition may not be met.

[0041] Optionally, the above-mentioned response to triggering the unlock button, sending pre-unlock information to the main control device and maintaining the locked state, may include: responding to triggering the unlock button, sending pre-unlock information to the main control device, maintaining the locked state, and displaying a pre-unlock indicator at the corresponding indicator position of the circuit breaker to indicate the current status of the circuit breaker to the user.

[0042] A perforated window can be provided on the circuit breaker housing at the location corresponding to the unlock button. As the unlock button is pressed, the window displays different symbols that explain the button. For example, a locked symbol is displayed in the initial state, and a pre-unlock symbol is displayed after a press triggers pre-unlock. The locked symbol and the pre-unlock symbol can be different colors or different patterns, which is not limited here.

[0043] Alternatively, if the circuit breaker is an intelligent circuit breaker with a display screen, then different indicators can be displayed on the display screen in different states of the circuit breaker. For example, a locked indicator is displayed in the initial state, a pre-unlock indicator is displayed after the unlock button is triggered, and an unlock indicator is displayed after unlocking.

[0044] Figure 3 A flowchart illustrating a circuit breaker unlocking control method according to another embodiment of this application is shown below. Figure 3 As shown, the above continuous monitoring checks whether the unlocking conditions are met. After the unlocking conditions are met, the control drive structure is used to unlock the circuit breaker, including: S301. During the continuous triggering of the unlock button, continuously monitor whether the unlocking conditions are met.

[0045] In this embodiment, while the unlock button is being operated continuously, such as by pressing it continuously without releasing it, the system continuously monitors whether the unlocking conditions are met.

[0046] If the unlocking conditions are not met, the unlocking operation will not be performed, nor will the system return to the initial state; it remains in a pre-unlocked state.

[0047] S302. After the above unlocking conditions are met, the control drive structure is used to unlock the circuit breaker.

[0048] Correspondingly, during the continuous triggering of the unlock button, if it is detected that the unlock button has been de-triggered, for example, the user has released the button and the unlock button has returned to its initial position, a pre-unlock release message is sent to the main control device. The circuit breaker remains locked, which can also be understood as releasing the pre-unlock state and restoring the initial locked state without performing any actual operation.

[0049] If the circuit breaker has a label indicating its position, it will switch from the pre-unlocked state to the locked state accordingly.

[0050] As can be seen in this embodiment, if the user continues to operate the unlock button, the system remains in a pre-unlocked state (locked), waiting for a response from the main control device and continuously monitoring whether the entire system meets the unlocking conditions. If the user stops operating the unlock button, the system exits the pre-unlocked state, indicating that unlocking is no longer required, and the main control device is simultaneously notified that unlocking preparation is no longer necessary.

[0051] The unlocking conditions mentioned above may include at least one of the following: (1) Receive the unlock permission command sent by the master control device.

[0052] After receiving the pre-unlocking information from the circuit breaker, the main control equipment knows that the circuit breaker is ready to unlock. The main control equipment will also make safety preparations, such as soft shutdown, power outage, voltage regulation, frequency regulation, and phase regulation of the inverter, and then notify the circuit breaker that it can be unlocked. Accordingly, the circuit breaker unlocks after receiving the unlocking permission command.

[0053] (2) The difference in electrical parameters between the incoming and outgoing sides is found to be within the safety threshold.

[0054] The circuit breaker continuously collects electrical parameters from the incoming and outgoing sides. These electrical parameters may include current and voltage, and may also include one or more of the following: voltage or current amplitude, frequency, and phase. No restrictions are imposed here.

[0055] If the circuit breaker confirms that the synchronization deviation of electrical parameters between the incoming and outgoing sides is less than the preset safety threshold, for example, if the synchronization deviation of voltage between the incoming and outgoing sides is less than the preset safety voltage value, and the voltage amplitude difference, frequency difference, and phase difference all meet the corresponding safety threshold requirements, it means that the inverter side has made adjustments for unlocking synchronization and can meet the unlocking conditions.

[0056] (3) The delay duration reaches the preset delay length.

[0057] Optionally, after sending pre-unlock information to the main control device, a timer is started. During this time, electrical parameters on the incoming and outgoing sides are monitored to confirm whether unlocking is possible. Unlocking can also be performed after the timer reaches a preset delay length.

[0058] (4) The main control device output is detected to be in the off state, and / or there is no voltage output on the load side.

[0059] Alternatively, the system can monitor the electrical parameters on the outgoing line side and determine whether the main control equipment output is in a shutdown state and / or whether there is no voltage output on the load side based on these parameters. For example, if the voltage on the outgoing line side is lower than the phase loss threshold, it is considered that the power is off, and the main control equipment output will generally be in a shutdown state with no voltage output on the load side.

[0060] Furthermore, the aforementioned response to the triggering operation of the unlock button, sending pre-unlock information to the main control device and maintaining the locked state, may include: In response to the triggering operation of the unlock button, a timer for the duration of the triggering operation is started; if the duration of the triggering operation is greater than or equal to a first preset duration, a pre-unlocking message is sent to the main control device and the locked state is maintained.

[0061] To prevent accidental user touches—that is, pressing the unlock button without actually unlocking the device—this embodiment requires detecting that the unlock button press operation has exceeded a certain duration, i.e., a long press, before triggering pre-unlocking. Specifically, after the user presses the unlock button, a timer T1 is started. If T1 is greater than or equal to a first preset duration, it is determined to be a pre-unlock operation, and pre-unlock information is sent to the main control device.

[0062] This stage is used to confirm the user's intent, without performing the unlocking operation or determining whether the unlocking has failed.

[0063] Figure 4 A flowchart illustrating a circuit breaker unlocking control method according to another embodiment of this application is shown below. Figure 4 As shown, after the unlocking conditions are met, the control drive structure performs circuit breaker unlocking, including: S401. After the unlocking condition is met, control the drive structure of the circuit breaker to move from the locked position to the unlocked position and start timing T2.

[0064] That is, to complete the actual unlocking operation and start the timer.

[0065] S402. When the timer T2 reaches the second preset duration, update the circuit breaker's operating status to manual mode.

[0066] In manual mode, the circuit breaker's opening and closing require manual operation via mechanical buttons or handles, and is no longer controlled by remote commands. In addition, it is also necessary to report to the main control equipment that the mode has changed, that is, to inform the main control equipment that the circuit breaker has switched to manual mode.

[0067] Optionally, the second preset duration is longer than the maximum mechanical action duration of the drive structure, so as to ensure that the system status is updated only after the drive structure has fully reached the unlock position, thus avoiding a mismatch between the updated status and the actual physical position.

[0068] After switching to manual mode, if you want to exit manual mode, you can also press and hold the unlock button for a long time. For example, if the preset unlock time is exceeded, it will return to the remote control mode or automatic control mode. There are no restrictions here.

[0069] It should be noted that in the unlocked state, pressing and holding the unlock button will deactivate the manual mode and restore the circuit breaker to the remote control mode or automatic control mode.

[0070] S403. Send working status switching information to the main control equipment to indicate that the circuit breaker is updated to manual mode.

[0071] Furthermore, after updating the circuit breaker's operating state to manual mode when the timer T2 reaches the second preset duration, if it is detected that the unlocking conditions are not met, the circuit breaker's drive structure is controlled to reset from the unlocked position to the locked position; and locked status information and manual mode information are sent to the main control device.

[0072] In this embodiment, after unlocking, the status of the off-grid system continues to be monitored. Optionally, after unlocking or switching to manual mode, the circuit breaker continuously collects electrical parameters from the incoming and outgoing sides and verifies whether the unlocking conditions are met based on these parameters (e.g., voltage, voltage amplitude, frequency, phase, etc.). In some cases, the unlocking conditions are no longer met, and the circuit breaker itself must perform a reset, i.e., control the circuit breaker's drive structure to reset from the unlocked position to the locked position. Additionally, the circuit breaker must clear the manual mode, i.e., restore to the previous mode and report to the main control device that it has returned to the locked state.

[0073] It should be noted that after returning to the locked state, if you want to unlock it again, you still need to execute the above unlock control process, that is, pre-unlocking must be performed first, and unlocking can only be performed after the unlocking conditions are met.

[0074] Optionally, after the unlocking conditions are met and the control drive structure performs circuit breaker unlocking, the method further includes: receiving a locking command sent by the main control device; and, according to the locking command, resetting the circuit breaker drive structure from the unlocked position to the locked position.

[0075] In this embodiment, the main control device can also instruct the circuit breaker to return to the locked state as needed. Upon receiving the locking command from the main control device, the circuit breaker will lock.

[0076] In another embodiment, after the control drive structure unlocks the circuit breaker, timer T3 is started. If the circuit breaker's open or closed state does not change after a third preset time, the control drive structure of the circuit breaker is reset from the unlocked position to the locked position, that is, relocked.

[0077] Alternatively, the unlocking button can be used to trigger relocking. Optionally, after the control drive structure performs circuit breaker unlocking, it responds to the triggering operation of the unlocking button and starts a timer T4 for the duration of the triggering operation. If the duration T4 of the triggering operation is greater than or equal to the fourth preset duration, the control drive structure of the circuit breaker is reset from the unlocked position to the locked position, i.e., relocked.

[0078] Furthermore, during the circuit breaker's closing operation, the aforementioned drive structure is prohibited from unlocking or resetting from the unlocked position. That is, during the circuit breaker's closing process, the drive structure should be kept stationary as much as possible, neither moving from the unlocked position to the locked position nor from the locked position to the unlocked position. During this process, even if the unlock button is triggered (triggering unlocking or resetting), no response is allowed until the closing operation is completed.

[0079] Based on the same inventive concept, this application also provides a circuit breaker unlocking control device corresponding to the above method. Since the principle of the device in this application is similar to that of the above method in this application, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be described again.

[0080] Figure 5 This is a schematic diagram of a circuit breaker unlocking control device provided in an embodiment of this application. The device includes: a response module 501 and a control module 502; wherein, The response module 501 is used to respond to the trigger operation of the unlock button, send pre-unlock information to the main control device and maintain the locked state; The control module 502 is used to continuously monitor whether the unlocking conditions are met. After the unlocking conditions are met, the control drive structure is used to unlock the circuit breaker. The unlocking conditions indicate that the system is in a safe state.

[0081] Optionally, the control module 502 is specifically used to continuously monitor whether the unlocking conditions are met during the continuous triggering of the unlock button; after the unlocking conditions are met, the control drive structure is used to unlock the circuit breaker.

[0082] Optionally, the response module 501 is further configured to send a pre-unlock release message to the main control device if it detects that the unlock button has been deactivated during the continuous triggering of the unlock button.

[0083] Optionally, the response module 501 is specifically used to start a timer for the duration of the trigger operation in response to the trigger operation of the unlock button; if the duration of the trigger operation is greater than or equal to a first preset duration, then send pre-unlock information to the main control device and maintain the locked state.

[0084] Optionally, the unlocking conditions include at least one of the following: Received an unlock permission command from the main control device; The difference in electrical parameters between the incoming and outgoing lines was found to be within the safety threshold. The delay duration has reached the preset delay length; The main control device output is detected to be off, and / or there is no voltage output on the load side.

[0085] Optionally, the control module 502 is specifically used to control the drive structure of the circuit breaker to move from the locked position to the unlocked position and start timing after the unlocking condition is met; update the working state of the circuit breaker to manual mode when the timing reaches a second preset duration; and send working state switching information to the main control device to instruct the circuit breaker to update to the manual mode.

[0086] Optionally, the control module 502 is also configured to, if it detects that the unlocking conditions are not met, control the drive structure of the circuit breaker to reset from the unlocked position to the locked position; send locked status information and clear manual mode information to the main control device.

[0087] Optionally, the response module 501 is further configured to, after the unlocking condition is met, control the drive structure to perform circuit breaker unlocking, and then receive a locking command sent by the main control device; according to the locking command, control the drive structure of the circuit breaker to reset from the unlocked position to the locked position.

[0088] Optionally, the response module 501 is further configured to, after the unlocking condition is met, control the drive structure to perform circuit breaker unlocking, and if the opening or closing state of the circuit breaker does not change after a third preset time period, then control the drive structure of the circuit breaker to reset from the unlocked position to the locked position.

[0089] Optionally, the response module 501 is further configured to, after the unlocking condition is met, control the drive structure to perform circuit breaker unlocking, and in response to the triggering operation of the unlock button, start a timer for the duration of the triggering operation; if the duration of the triggering operation is greater than or equal to a fourth preset duration, control the drive structure of the circuit breaker to reset from the unlocked position to the locked position.

[0090] Optionally, the response module 501 is specifically used to send pre-unlock information to the main control device in response to the trigger operation of the unlock button, maintain the locked state and display the pre-unlock indicator at the corresponding indicator position of the circuit breaker.

[0091] Optionally, the response module 501 is used to prevent the drive structure from unlocking or resetting from the unlocked position during the closing operation of the circuit breaker.

[0092] The processing flow of each module in the device and the interaction flow between each module can be referred to the relevant descriptions in the above method embodiments, and will not be detailed here.

[0093] This application also provides a circuit breaker, such as... Figure 6 The diagram shown is a schematic representation of a circuit breaker structure provided in an embodiment of this application, including: a processor 601 and a memory 602. Optionally, a bus 603 may also be included. The memory 602 stores machine-readable instructions executable by the processor 601. The processor 601 and the memory 602 communicate via the bus 603. The processor 601 is used to execute the machine-readable instructions to perform the steps of the circuit breaker unlocking control method described above.

[0094] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, performs the steps of the circuit breaker unlocking control method described above.

[0095] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems and devices described above can be referred to the corresponding processes in the method embodiments, and will not be repeated here. In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed mutual coupling or direct coupling or communication connection can be through some communication interfaces; the indirect coupling or communication connection of devices or modules can be electrical, mechanical, or other forms.

[0096] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. If the functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0097] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A circuit breaker unlocking control method, characterized in that, The method, applied to a controller for a circuit breaker, includes: In response to the triggering of the unlock button, a pre-unlock message is sent to the main control device and the locked state is maintained; The system continuously monitors whether the unlocking conditions are met. Once the unlocking conditions are met, the control drive structure is activated to unlock the circuit breaker. The unlocking conditions indicate that the system is in a safe state.

2. The control method according to claim 1, characterized in that, The continuous monitoring of whether the unlocking conditions are met, and the control of the drive structure to unlock the circuit breaker after the unlocking conditions are met, includes: During the continuous triggering of the unlock button, the system continuously monitors whether the unlocking conditions are met. After the unlocking conditions are met, the control drive structure performs circuit breaker unlocking.

3. The control method according to claim 2, characterized in that, The method further includes: During the continuous triggering of the unlock button, if it is detected that the unlock button is de-triggered, a pre-unlock release message is sent to the main control device.

4. The control method according to claim 1, characterized in that, The step of responding to a trigger operation of the unlock button, sending pre-unlock information to the main control device and maintaining the locked state includes: In response to a triggering operation on the unlock button, start a timer to count down the duration of the triggering operation; If the duration of the triggering operation is greater than or equal to the first preset duration, a pre-unlocking message is sent to the main control device and the locked state is maintained.

5. The control method according to claim 1, characterized in that, The unlocking conditions include at least one of the following: Received an unlock permission command from the main control device; The difference in electrical parameters between the incoming and outgoing lines was found to be within the safety threshold. The delay duration has reached the preset delay length; The main control device output is detected to be off, and / or there is no voltage output on the load side.

6. The control method according to claim 1, characterized in that, The step of controlling the drive structure to unlock the circuit breaker after the unlocking condition is met includes: After the unlocking conditions are met, the drive structure of the circuit breaker is controlled to move from the locked position to the unlocked position, and a timer is started; When the timer reaches the second preset duration, the circuit breaker's operating status is updated to manual mode. Send working status switching information to the main control device to instruct the circuit breaker to update to the manual mode.

7. The control method according to claim 6, characterized in that, After updating the circuit breaker's operating state to manual mode when the timer reaches the second preset duration, the method further includes: If the unlocking conditions are not met, the control circuit breaker's drive mechanism is reset from the unlocked position to the locked position. Send lock status information and clear manual mode information to the main control device.

8. The control method according to claim 1, characterized in that, After the unlocking condition is met, and the control drive structure performs circuit breaker unlocking, the process further includes: Receive the locking command sent by the main control device; According to the locking command, the drive structure of the circuit breaker is controlled to reset from the unlocked position to the locked position.

9. The control method according to claim 1, characterized in that, After the unlocking condition is met, and the control drive structure performs circuit breaker unlocking, the process further includes: If the circuit breaker's open or closed state remains unchanged for more than a third preset time period, the drive structure of the circuit breaker will be reset from the unlocked position to the locked position.

10. The control method according to claim 1, characterized in that, After the unlocking condition is met, and the control drive structure performs circuit breaker unlocking, the process further includes: In response to a triggering operation on the unlock button, start a timer to count down the duration of the triggering operation; If the duration of the triggering operation is greater than or equal to the fourth preset duration, the drive structure of the circuit breaker is controlled to reset from the unlocked position to the locked position.

11. The control method according to claim 1, characterized in that, The step of responding to a trigger operation of the unlock button, sending pre-unlock information to the main control device and maintaining the locked state includes: In response to the triggering operation of the unlock button, a pre-unlock information is sent to the main control device, the locked state is maintained, and the pre-unlock indicator is displayed at the corresponding identification position of the circuit breaker.

12. The control method according to claim 1, characterized in that, The method further includes: During the closing action of the circuit breaker, the drive structure is prohibited from unlocking or resetting from the unlocked position.

13. A circuit breaker unlocking control device, characterized in that, A controller for a circuit breaker, the device comprising: The response module is used to respond to the trigger operation of the unlock button, send pre-unlock information to the main control device and maintain the locked state; The control module is used to continuously monitor whether the unlocking conditions are met. After the unlocking conditions are met, the control drive structure is used to unlock the circuit breaker. The unlocking conditions indicate that the system is in a safe state.

14. A circuit breaker, characterized in that, include: A processor and a memory, the memory storing machine-readable instructions executable by the processor, the processor executing the machine-readable instructions to perform the circuit breaker unlocking control method as described in any one of claims 1 to 11.

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