Circuit breaker control method and system and circuit breaker

Abstract

The invention provides a circuit breaker control method and system and a circuit breaker, and belongs to the technical field of circuit breaker control, and the method comprises the steps: firstly obtaining an action time parameter of a motor in the circuit breaker for executing each control action, and obtaining a preset fault-tolerant duration; and then, the control motor executes a corresponding target control action according to the action time parameter and a preset fault-tolerant duration so as to drive an operating mechanism of the circuit breaker to act. Then, the action position of the operation mechanism is detected, and when the action position reaches a preset target position corresponding to the target control action or the detection duration reaches the target duration, it is judged that execution of the target control action is completed. Thus, through the mode of firstly controlling the motor to act, then performing position detection and setting the target duration as the maximum duration of the motor action, the start-stop control of the motor does not completely depend on the feedback result of the position detection device, and the situation that the position detection device breaks down, so that the circuit breaker works abnormally is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of circuit breaker control, and in particular to a circuit breaker control method, system and circuit breaker. Background Art

[0002] With the development of smart grids, circuit breakers have begun to support remote opening and closing operations through various channels and communication protocols, as well as opening and closing control during local protection. For the opening and closing functions of local control circuit breakers, the main implementation method is to use motors combined with gear worms and other operating mechanisms to achieve opening and closing control.

[0003] At present, since the motor in the circuit breaker only needs to realize simple functions such as opening and closing, in order to control costs, the motors commonly used in circuit breakers are usually brushed motors. Compared with brushless motors, brushed motors cannot be precisely controlled, so position detection is added in the closing position, opening position and initial position to achieve feedback closed-loop control to ensure that the motor runs in place and the opening and closing actions are successful. For example, when the circuit breaker needs to be closed, the motor can be controlled to reverse until the position detection signal of the closing position is received, and then the reversal is stopped.

[0004] However, when using the position detection feedback method, the start and stop control of the motor will completely rely on the accuracy of the position detection. If the position detection device fails, it will cause the motor to work abnormally, thereby affecting the normal operation of the circuit breaker. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present application provides a circuit breaker control method, system and circuit breaker.

[0006] In a first aspect, the present application provides a circuit breaker control method, comprising:

[0007] Obtain the action time parameters of each control action performed by the motor in the circuit breaker, and obtain the preset fault tolerance time;

[0008] Controlling the motor to perform a corresponding target control action according to the action time parameter and the preset fault tolerance time to drive the operating mechanism of the circuit breaker to act;

[0009] Detecting the action position of the operating mechanism, and determining that the target control action is completed when the action position reaches a preset target position corresponding to the target control action or when the detection duration reaches a target duration;

[0010] The target duration is predetermined according to the fault tolerance duration.

[0011] Optionally, the control action includes a closing execution action, a closing unlocking action, an opening execution action and an opening unlocking action;

[0012] Wherein, the closing execution action is the action of the motor rotating to drive the operating mechanism to move from the initial position to the closing position;

[0013] The closing and unlocking action is an action in which the motor rotates to drive the operating mechanism to move from the closing position to the initial position;

[0014] The opening execution action is an action in which the motor rotates to drive the operating mechanism to move from the initial position to the opening position;

[0015] The opening and unlocking action is an action in which the motor rotates to drive the operating mechanism to move from the opening position to the initial position.

[0016] Optionally, before obtaining the action time parameters of each control action performed by the motor in the circuit breaker, the method further includes:

[0017] Receive test instructions;

[0018] According to the test instruction, the motor is controlled to execute each of the control actions, and the time length for the operating mechanism to reach the preset target position is used as the action time parameter corresponding to the control action.

[0019] Optionally, controlling the motor to perform each of the control actions and taking the time for the operating mechanism to reach the preset target position as an action time parameter corresponding to the control action includes:

[0020] Controlling the motor to execute the closing action, and taking the time for the operating mechanism to reach the closing position as the first time parameter of the closing action;

[0021] Controlling the motor to execute the closing and unlocking action, and taking the time for the operating mechanism to reach the initial position as a second time parameter of the closing and unlocking action;

[0022] Controlling the motor to execute the opening action, and taking the time for the operating mechanism to reach the opening position as a third time parameter of the opening action;

[0023] The motor is controlled to execute the opening and unlocking action, and the time length for the operating mechanism to reach the initial position is used as a fourth time parameter of the opening and unlocking action.

[0024] Optionally, also include:

[0025] Obtaining the no-load speed, conversion coefficient and average load torque of the motor;

[0026] Obtaining the number of rotations required for the motor to perform each of the control actions;

[0027] Obtaining a theoretical action duration of each control action according to the number of rotations, the no-load speed, the conversion coefficient, and the average load torque;

[0028] When the difference between the time taken for the operating mechanism to reach the preset target position and the theoretical action time exceeds a preset deviation value, it is determined that the circuit breaker is faulty.

[0029] Optionally, obtaining the theoretical action duration of each control action according to the number of rotations, the no-load speed, the conversion coefficient and the average load torque respectively includes:

[0030] The theoretical action duration T=N / (n0-B×m); wherein N represents the number of rotations; n0 represents the no-load speed; B represents the conversion coefficient, which is the coefficient between the torque and speed of the motor; and m represents the average load torque.

[0031] Optionally, controlling the motor to perform a corresponding target control action according to the action time parameter and the preset fault tolerance time includes:

[0032] Controlling the motor to execute a closing action according to the difference between the first time parameter and the preset fault tolerance time; or,

[0033] Controlling the motor to perform a closing and unlocking action according to the difference between the second time parameter and the preset fault tolerance time; or,

[0034] Controlling the motor to perform a tripping action according to the difference between the third time parameter and the preset fault tolerance time; or,

[0035] The motor is controlled to perform a gate opening and unlocking action according to a difference between the fourth time parameter and the preset fault tolerance time.

[0036] Optionally, the target control action is a closing execution action, and after determining that the target control action is completed, the step further includes:

[0037] Obtaining a first execution time for the operating mechanism to drive the operating handle of the circuit breaker to close the circuit breaker, and controlling the motor to continue rotating in the rotation direction of the closing execution action for the first execution time;

[0038] Alternatively, the target control action is a switch-off execution action, and after determining that the target control action is completed, the method further includes:

[0039] Obtain the second execution time length of the operating mechanism driving the operating handle of the circuit breaker to open the circuit breaker, and control the motor to continue rotating in the rotation direction of the closing execution action for the second execution time length

[0040] Optionally, after determining that the target control action is completed, the step further includes:

[0041] Get the preset jitter duration;

[0042] The motor is controlled to cyclically execute a preset number of forward rotation and reverse rotation, each forward rotation lasts for the jittering duration and each reverse rotation also lasts for the jittering duration.

[0043] In a second aspect, in one embodiment, the present application provides a circuit breaker control system, comprising:

[0044] A parameter acquisition module is used to obtain the action time parameters of the motor in the circuit breaker to perform various control actions and obtain the preset fault tolerance time;

[0045] An execution module, used to control the motor to execute a corresponding target control action according to the action time parameter and the preset fault tolerance time, so as to drive the operation mechanism of the circuit breaker to act;

[0046] A determination module is used to detect the action position of the operating mechanism, and determine that the target control action is completed when the action position reaches a preset target position corresponding to the target control action or the detection duration reaches a target duration; wherein the target duration is predetermined based on the fault tolerance duration.

[0047] In a third aspect, in one embodiment, the present application provides a circuit breaker, comprising a memory and a processor; the memory stores a computer program, and the processor is used to run the computer program in the memory to execute the steps in a circuit breaker control method as described above.

[0048] In a fourth aspect, in one embodiment, the present application provides a storage medium, wherein the storage medium stores a computer program, and the computer program is loaded by a processor to execute the steps in the circuit breaker control method in any of the above embodiments.

[0049] In summary, firstly, the action time parameters and preset fault tolerance time of each control action performed by the motor in the circuit breaker are obtained, and the motor is controlled to perform the corresponding target control action according to the action time parameters and the preset fault tolerance time, so as to drive the operation mechanism of the circuit breaker to act, thereby avoiding the motor not acting due to the failure of the position detection device to continuously output a valid signal. Then, the action position of the operating mechanism is detected, and when the action position reaches the preset target position corresponding to the target control action or the detection time reaches the target time, it is determined that the execution of the target control action is completed, and the motor is controlled to stop working, thereby avoiding the continuous action of the motor that cannot be stopped due to the failure of the position detection device to continuously output an invalid signal. In this way, by first controlling the motor action and then performing position detection, and setting the target time as the maximum time of the motor action, the start and stop control of the motor does not completely rely on the feedback result of the position detection device, thereby avoiding the situation where the circuit breaker works abnormally due to a failure of the position detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0051] Figure 1 This is a schematic diagram of the structure of a circuit breaker in one embodiment of the present application;

[0052] Figure 2 This is a flow chart of a circuit breaker control method in one embodiment of the present application;

[0053] Figure 3 A flow chart of a method for generating action time parameters in one embodiment of the present application;

[0054] Figure 4 A flow chart of a method for determining a circuit breaker fault in one embodiment of the present application;

[0055] Figure 5 This is a block diagram of a circuit breaker control system in one embodiment of the present application;

[0056] Figure 6 This is a module schematic diagram of a circuit breaker in one embodiment of the present application. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not 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 this application.

[0058] In the description of the present application, it should be understood that the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In the present application, the word "exemplary" is used to mean "used as an example, illustration or description". Any embodiment described as "exemplary" in the present application is not necessarily interpreted as being more preferred or more advantageous than other embodiments. In order to enable any technician in the field to implement and use the present application, the following description is given. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present application can also be implemented without using these specific details. In other examples, well-known structures and processes will not be elaborated in detail to avoid unnecessary details that make the description of the present application obscure. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest range of principles and features disclosed in the present application.

[0059] The circuit breaker control method in the embodiment of the present application is applied to a circuit breaker control system, and the circuit breaker control system is arranged in the circuit breaker. The application scenario of the circuit breaker control method in the embodiment of the present application includes a circuit breaker, in which a circuit breaker control system is integrated, and a computer-readable storage medium corresponding to the circuit breaker control method is run in the circuit breaker to execute the steps of the circuit breaker control method.

[0060] It can be understood that the circuit breaker in the application scenario of the circuit breaker control method, or the device included in the circuit breaker does not constitute a limitation on the embodiments of the present application, that is, the number of devices and types of devices included in the application scenario of the circuit breaker control method, or the number of devices and types of devices included in each device do not affect the overall implementation of the technical solution in the embodiments of the present application, and can all be regarded as equivalent replacements or derivatives of the technical solution claimed to be protected in the embodiments of the present application.

[0061] Those skilled in the art can understand that the above application scenario is only an application scenario corresponding to the technical solution of the present application, and does not constitute a limitation on the application scenario of the technical solution of the present application. The circuit breaker may also include a memory for storing information related to the circuit breaker control method. It should be noted that the application scenario of the circuit breaker control method is only an example, and the application scenario of the circuit breaker control method described in the embodiment of the present application is to more clearly illustrate the technical solution of the embodiment of the present application, and does not constitute a limitation on the technical solution provided in the embodiment of the present application.

[0062] Secondly, based on the contents of the aforementioned background technology of the present application, the background of the present application is further elaborated. Under normal working conditions, when the circuit breaker performs a closing operation, the motor first reverses to detect whether it has reached the closing position, stops after reaching the closing position, and then rotates forward and detects whether the operating mechanism has reached the initial position, and stops after reaching the initial position. When the circuit breaker performs an opening operation, the motor first rotates forward and detects whether it has reached the opening position, stops after reaching the opening position, and then reverses and detects whether the operating mechanism has reached the initial position, and stops after reaching the initial position. However, in actual applications, if a position detection device for detecting the closing position, the opening position, or the initial position fails, the motor will not be able to operate normally. For example, when the circuit breaker needs to perform a closing operation, if the position detection device at the closing position has a short circuit fault, that is, the position detection device at the closing position continues to output a valid signal to indicate that the operating mechanism has reached the closing position, the motor will not move at this time, resulting in a closing failure; if the position detection device at the initial position has a short circuit, that is, the position detection device at the initial position continues to output a valid signal to indicate that the operating mechanism has reached the initial position, the motor will stop at the closing position and cannot be manually opened by the operating handle. If the position detection device at the closing position has a ground fault, that is, the position detection device at the closing position continues to output an invalid signal and cannot provide a feedback signal to the motor, resulting in continuous reversal of the motor. If the position detection device at the initial position has a ground fault, the motor will continue to run through the initial position to the opening position, making it impossible to manually close the circuit breaker through the operating handle. Similarly, when the circuit breaker performs an opening operation, if the position detection device at the opening position has a short circuit, the motor will not move, resulting in a closing failure. If the position detection device at the initial position has a short circuit, the motor will stop at the opening position and cannot be manually closed by the operating handle. If the position detection device in the open position has a ground fault, the motor will continue to rotate forward. If the position detection device in the initial position has a ground fault, the motor will directly run to the closed position and cannot be manually opened by the operating handle.

[0063] Based on the above-mentioned abnormal operation of the circuit breaker, an embodiment of a circuit breaker control method is proposed.

[0064] First, as Figure 2As shown, in one embodiment, the present application provides a circuit breaker control method, and the circuit breaker control method includes steps S101 to S103, which are described in detail below.

[0065] Step S101: obtaining action time parameters of various control actions performed by a motor in a circuit breaker, and obtaining a preset fault tolerance time.

[0066] In some embodiments, the control action includes a closing execution action, a closing unlocking action, an opening execution action, and an opening unlocking action. Among them, the closing execution action is an action in which the motor rotates to drive the operating mechanism to move from the initial position to the closing position; the closing unlocking action is an action in which the motor rotates to drive the operating mechanism to move from the closing position to the initial position; the opening execution action is an action in which the motor rotates to drive the operating mechanism to move from the initial position to the opening position. The opening unlocking action is an action in which the motor rotates to drive the operating mechanism to move from the opening position to the initial position.

[0067] Step S102: controlling the motor to execute a corresponding target control action according to the action time parameter and the preset fault tolerance time to drive the operating mechanism of the circuit breaker to act.

[0068] As an example, the motor may be controlled to perform a corresponding target control action according to a difference between an action time parameter and a preset fault tolerance time.

[0069] Step S103: detecting the action position of the operating mechanism, and when the action position reaches a preset target position corresponding to the target control action or the detection duration reaches a target duration, determining that the target control action is executed.

[0070] Combination Figure 1 , the operating mechanism may include a gear and a worm, the output shaft of the motor cooperates with the worm, and the worm meshes with the gear, so that the motor rotates to drive the gear to operate. The preset target position includes a closing position, an opening position and an initial position; each target control action corresponds to a preset target position. A position detection device is set at each preset target position to determine whether the action position of the operating mechanism reaches the preset target position, that is, position detection devices are respectively set at the closing position, the initial position and the opening position to detect whether the gear reaches the closing position, the initial position or the opening position, thereby detecting whether the operating mechanism reaches the closing position, the initial position or the opening position. Among them, c represents the closing position, i represents the initial position, and o represents the opening position.

[0071] Among them, the target duration is predetermined according to the fault tolerance duration, and the fault tolerance time can be set according to historical experience and actual conditions. The target duration is the maximum duration for detecting the action position, and the target duration can be determined as twice the fault tolerance duration. During the detection of the action position, the motor continues to perform the target control action. For example, if it is detected that the action position reaches the preset target position corresponding to the target control action, the target control action is completed. At this time, the detection of the action position is immediately stopped and the execution of the target control action is stopped without waiting until the target duration is reached, thereby improving the response speed of executing the target control action; and if the action position is still not detected to reach the preset target position after reaching the target duration, it means that the position detection device at the preset target position has a fault and the action position cannot be detected. In this way, by controlling the motor to continue to perform the target control action during the detection of the action position, it can be avoided that the operating mechanism does not reach the preset target position due to insufficient execution time of the target control action. Then, after the duration of the detected action position reaches the target duration, it is determined that the target control action is completed to stop the target control action, thereby avoiding the problem of continuous action caused by a fault in the position detection device.

[0072] As an example, when the target control action is a closing action, the preset target position is the closing position to trigger the closing of the circuit breaker; when the target control action is a closing unlocking action, the preset target position is the initial position so that the operating mechanism can be controlled by the operating handle after closing. When the target control action is an opening action, the preset target position is the opening position to trigger the opening of the circuit breaker; when the target control action is an opening action, the preset target position is the initial position so that the operating mechanism can be controlled by the operating handle after opening.

[0073] In the above implementation, the action time parameters and preset fault tolerance time of each control action performed by the motor in the circuit breaker are first obtained, and the motor is controlled to perform the corresponding target control action according to the action time parameters and the preset fault tolerance time, so as to drive the operation mechanism of the circuit breaker to act, thereby avoiding the motor not acting due to the failure of the position detection device to continuously output a valid signal. Then, the action position of the operating mechanism is detected, and when the action position reaches the preset target position corresponding to the target control action or the detection time reaches the target time, it is determined that the execution of the target control action is completed, and the motor is controlled to stop working, thereby avoiding the continuous action of the motor that cannot be stopped due to the failure of the position detection device to continuously output an invalid signal. In this way, by controlling the motor action first and then performing position detection, and setting the target time as the maximum time of the motor action, the start and stop control of the motor does not completely rely on the feedback result of the position detection device, thereby avoiding the situation where the circuit breaker works abnormally due to the failure of the position detection device.

[0074] As a further implementation of the circuit breaker control method, step S201 to step S202 are included before step S101, which are described in detail below.

[0075] Step S201: receiving a test instruction.

[0076] As an example, the test instruction may be a test instruction issued by the host computer through 485 communication when the circuit breaker is undergoing comprehensive bench inspection.

[0077] Step S202: According to the test instruction, the motor is controlled to execute various control actions, and the time length for the operating mechanism to reach the preset target position is used as the action time parameter corresponding to the control action.

[0078] As an example, multiple test instructions may be sent for each control action to obtain multiple action time parameters and calculate an average value as the final action time parameter.

[0079] Reference Figure 3 As an implementation of step S202, step S202 may include steps S2021 to S2024, which are described in detail below.

[0080] Step S2021: Control the motor to execute the closing action, and use the time length for the operating mechanism to reach the closing position as the first time parameter of the closing action.

[0081] As an example, take the case where the motor rotates in the reverse direction to the closing position and in the forward direction to the opening position. When executing the closing action, the motor reverses and detects the closing detection signal fed back by the position detection device of the closing position. When the closing detection signal is obtained, the time length of the operating mechanism reaching the closing position is recorded.

[0082] Step S2022: Control the motor to execute the closing and unlocking action, and use the time length for the operating mechanism to reach the initial position as the second time parameter of the closing and unlocking action.

[0083] As an example, when executing the closing and unlocking action, the motor rotates forward and detects the initial detection signal fed back by the position detection device of the initial position. When the initial detection signal is obtained, the time length for the operating mechanism to reach the initial position is recorded.

[0084] Step S2023: Control the motor to execute the opening execution action, and use the time length for the operating mechanism to reach the opening position as the third time parameter of the opening execution action.

[0085] Step S2024: Control the motor to execute the opening and unlocking action, and use the time length for the operating mechanism to reach the initial position as the fourth time parameter of the opening and unlocking action.

[0086] In the above implementation, during the test phase of the circuit breaker, the closing execution action, the closing unlocking action, the opening execution action and the opening unlocking action are executed, and the first time parameter, the second time parameter, the third time parameter and the fourth time parameter corresponding to each other are recorded respectively, so as to obtain more accurate action time parameters for the closing and opening characteristics of each circuit breaker.

[0087] Reference Figure 4 As a further implementation of the circuit breaker control method, the circuit breaker control method further includes steps S301 to S304, which are described in detail below.

[0088] Step S301: Obtain the no-load speed, conversion coefficient and average load torque of the motor.

[0089] Step S302: Obtain the number of rotations required for the motor to perform each control action.

[0090] Step S303: Obtaining the theoretical action duration of each control action according to the number of rotations, no-load speed, conversion coefficient and average load torque.

[0091] As an example, the theoretical action duration can be expressed as T=N / (n0-B×m); wherein N represents the number of rotations; n0 represents the no-load speed; B represents the conversion coefficient, which is the coefficient between the torque and speed of the motor; and m represents the average load torque.

[0092] Step S304: When the difference between the time taken for the operating mechanism to reach the preset target position and the theoretical action time exceeds a preset deviation value, it is determined that the circuit breaker is faulty.

[0093] In the above embodiment, if the difference between the time taken for the operating mechanism to reach the preset target position and the theoretical action time exceeds the preset deviation value, it indicates that the position detection device of the circuit breaker at the preset target position may be faulty. In this case, the circuit breaker is judged to be faulty, so that the fault of the circuit breaker can be discovered in time during the test phase and the circuit breaker can be repaired in time.

[0094] As an implementation of step S102, step S102 may include steps S1021 to S1024, which are described in detail below.

[0095] Step S1021: Control the motor to execute the closing action according to the difference between the first time parameter and the preset fault tolerance time. Or,

[0096] Step S1022: Control the motor to perform the closing and unlocking action according to the difference between the second time parameter and the preset fault tolerance time. Or,

[0097] Step S1023: Control the motor to perform the opening action according to the difference between the third time parameter and the preset fault tolerance time. Or,

[0098] Step S1024: controlling the motor to perform the opening and unlocking action according to the difference between the fourth time parameter and the preset fault tolerance time.

[0099] In the above implementation, the operation of the motor is controlled by the difference between the first time parameter and the preset fault-tolerant time, the difference between the second time parameter and the preset fault-tolerant time, the difference between the third time parameter and the preset fault-tolerant time, and the difference between the fourth time parameter and the preset fault-tolerant time, so that an error range is left based on the first time parameter, the second time parameter, the third time parameter, and the fourth time parameter.

[0100] As a further implementation of the circuit breaker control method, the target control action is a closing execution action, and after step S103, it can also include: obtaining a first execution time for the operating mechanism to drive the operating handle of the circuit breaker to close the circuit breaker, and controlling the motor to continue rotating in the rotation direction of the closing execution action for the first execution time.

[0101] As a further implementation method of the circuit breaker control method, the target control action is the opening execution action, and after step S103, it can also include: obtaining the second execution time length of the operating mechanism driving the operating handle of the circuit breaker to open the circuit breaker, and controlling the motor to continue rotating in the rotation direction of the closing execution action for the second execution time length

[0102] As an example, due to the design or structural differences of the circuit breaker, if the distance between the closing position and the opening position is too close, the position detection device of the closing position and the opening position generates a corresponding position detection signal, that is, the operating mechanism has reached the closing position or the opening position, but the operating handle has not moved to the position at this time, and then the motor returns to the initial position, resulting in the circuit breaker closing or opening failure. Therefore, after the closing action is completed, the motor continues to be controlled to rotate for the first execution time, and after the opening action is completed, the motor continues to be controlled to rotate for the second execution time, so that the operating handle has enough action time.

[0103] As a further implementation of the circuit breaker control method, step S103 may further include step S401 to step S402, which are described in detail below.

[0104] Step S401: obtaining a preset jitter duration;

[0105] Step S402: Control the motor to cyclically execute a preset number of forward and reverse rotations, with each forward rotation lasting for a certain period of time and each reverse rotation also lasting for a certain period of time.

[0106] As an example, due to the design or structural differences of the circuit breaker, if the distance between the closing position and the opening position is too far, when the motor runs to the closing position or the opening position, the operating mechanism is stuck, making the motor unable to run. Therefore, after the closing action is executed or the opening action is completed, the motor is controlled to perform multiple jitters in the forward and reverse cycles to avoid the motor being stuck and unable to run.

[0107] Reference Figure 5 In a second aspect, in one embodiment, the present application provides a circuit breaker control system, including a parameter acquisition module, an execution module and a determination module.

[0108] Among them, the parameter acquisition module is used to obtain the action time parameters of the motor in the circuit breaker to perform various control actions, and obtain the preset fault tolerance time.

[0109] An execution module is used to control the motor to execute the corresponding target control action according to the action time parameter and the preset fault tolerance time, so as to drive the operating mechanism of the circuit breaker to reach the execution action;

[0110] A determination module is used to detect the action position of the operating mechanism, and determine that the target control action is completed when the action position reaches a preset target position corresponding to the target control action or the detection duration reaches a target duration; wherein the target duration is predetermined based on the fault tolerance duration.

[0111] Among them, the acquisition module, execution module and determination module can be used to respectively execute steps S101-S103 in the embodiment corresponding to the above circuit breaker control method. For the specific implementation methods of these modules and more details, please refer to the corresponding method part, which will not be repeated here.

[0112] In a third aspect, in one embodiment, the present application provides a circuit breaker, such as Figure 6 As shown, it shows the structure of the circuit breaker involved in this application, specifically:

[0113] The circuit breaker may include one or more processors 401 of processing cores, one or more computer-readable storage media memories 402, a power supply 403, an input unit 404 and other components. Those skilled in the art will appreciate that Figure 5 The structure of the circuit breaker shown in the figure does not constitute a limitation on the circuit breaker, and the circuit breaker may include more or less components than those shown in the figure, or combine certain components, or arrange the components differently.

[0114] in:

[0115] The processor 401 is the control center of the circuit breaker. It uses various interfaces and lines to connect various parts of the entire circuit breaker. It executes various functions of the circuit breaker and processes data by running or executing software programs and / or modules stored in the memory 402, and calling data stored in the memory 402, so as to monitor the circuit breaker as a whole. Optionally, the processor 401 may include one or more processing cores; preferably, the processor 401 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface and computer programs, etc., and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 401.

[0116] The memory 402 can be used to store software programs and modules. The processor 401 executes various functional applications and data processing by running the software programs and modules stored in the memory 402. The memory 402 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, a computer program required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created according to the use of the server, etc. In addition, the memory 402 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. Accordingly, the memory 402 may also include a memory controller to provide the processor 401 with access to the memory 402.

[0117] The circuit breaker also includes a power supply 403 for supplying power to each component. Preferably, the power supply 403 can be logically connected to the processor 401 through a power management system, so as to manage charging, discharging, and power consumption through the power management system. The power supply 403 can also include any components such as one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, and power status indicators.

[0118] The circuit breaker may further include an input unit 404, which may be used to receive input digital or character information and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.

[0119] Although not shown, the circuit breaker may further include a display unit, etc., which will not be described in detail herein. Specifically, in this embodiment, when the circuit breaker is a model training circuit breaker, the processor 401 in the circuit breaker will load the executable files corresponding to the processes of one or more computer programs into the memory 402 according to the following instructions, and the processor 401 will run the computer program stored in the memory 402 to execute the above-mentioned circuit breaker control method.

[0120] A person of ordinary skill in the art will appreciate that all or part of the steps in any of the methods of the above embodiments may be completed by a computer program, or by controlling related hardware through a computer program. The computer program may be stored in a computer-readable storage medium and loaded and executed by a processor.

[0121] In a fourth aspect, in one embodiment, the present application provides a storage medium storing a plurality of computer programs, which can be loaded by a processor to execute the above-mentioned circuit breaker control method.

[0122] It will be appreciated by those skilled in the art that any reference to memory, storage, database or other medium used in the embodiments provided herein may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in a variety of forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink), DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0123] Since the computer program stored in the storage medium can execute the steps in the circuit breaker control method in any embodiment provided in the present application, the beneficial effects that can be achieved by the circuit breaker control method in any embodiment provided in the present application can be achieved. Please refer to the previous embodiments for details and will not be repeated here.

[0124] The specific implementation of the above operations can be found in the previous embodiments, which will not be described in detail here.

[0125] 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, please refer to the detailed description of other embodiments above, and will not be repeated here.

[0126] The above is a detailed introduction to a circuit breaker control method, system and circuit breaker provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for technicians in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

[0127] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A circuit breaker control method, characterized in that: include: Obtain the action time parameters of each control action performed by the motor in the circuit breaker, and obtain the preset fault tolerance time; Controlling the motor to perform a corresponding target control action according to the action time parameter and the preset fault tolerance time to drive the operating mechanism of the circuit breaker to act; Detecting the action position of the operating mechanism, and determining that the target control action is completed when the action position reaches a preset target position corresponding to the target control action or when the detection duration reaches a target duration; The target duration is predetermined according to the fault tolerance duration.

2. The circuit breaker control method according to claim 1, characterized in that: The control actions include closing execution action, closing unlocking action, opening execution action and opening unlocking action; Wherein, the closing execution action is the action of the motor rotating to drive the operating mechanism to move from the initial position to the closing position; The closing and unlocking action is an action in which the motor rotates to drive the operating mechanism to move from the closing position to the initial position; The opening execution action is an action in which the motor rotates to drive the operating mechanism to move from the initial position to the opening position; The opening and unlocking action is an action in which the motor rotates to drive the operating mechanism to move from the opening position to the initial position.

3. The circuit breaker control method according to claim 2, characterized in that: Before obtaining the action time parameters of each control action performed by the motor in the circuit breaker, the method further includes: Receive test instructions; According to the test instruction, the motor is controlled to execute each of the control actions, and the time length for the operating mechanism to reach the preset target position is used as the action time parameter corresponding to the control action.

4. The circuit breaker control method according to claim 3, characterized in that: The controlling the motor to execute each of the control actions, and taking the time for the operating mechanism to reach the preset target position as an action time parameter corresponding to the control action, includes: Controlling the motor to execute the closing action, and taking the time for the operating mechanism to reach the closing position as the first time parameter of the closing action; Controlling the motor to execute the closing and unlocking action, and taking the time for the operating mechanism to reach the initial position as a second time parameter of the closing and unlocking action; Controlling the motor to execute the opening action, and taking the time for the operating mechanism to reach the opening position as a third time parameter of the opening action; The motor is controlled to execute the opening and unlocking action, and the time length for the operating mechanism to reach the initial position is used as a fourth time parameter of the opening and unlocking action.

5. The circuit breaker control method according to claim 3, characterized in that: Also includes: Obtaining the no-load speed, conversion coefficient and average load torque of the motor; Obtaining the number of rotations required for the motor to perform each of the control actions; Obtaining a theoretical action duration of each control action according to the number of rotations, the no-load speed, the conversion coefficient, and the average load torque; When the difference between the time taken for the operating mechanism to reach the preset target position and the theoretical action time exceeds a preset deviation value, it is determined that the circuit breaker is faulty.

6. The circuit breaker control method according to claim 5, characterized in that: The obtaining of the theoretical action duration of each control action according to the number of rotations, the no-load speed, the conversion coefficient and the average load torque respectively includes: The theoretical action duration T=N / (n0-B×m); wherein N represents the number of rotations; n0 represents the no-load speed; B represents the conversion coefficient, which is the coefficient between the torque and speed of the motor; and m represents the average load torque.

7. The circuit breaker control method according to claim 5, characterized in that: The controlling the motor to perform a corresponding target control action according to the action time parameter and the preset fault tolerance time includes: Controlling the motor to execute a closing action according to the difference between the first time parameter and the preset fault tolerance time; or, Controlling the motor to perform a closing and unlocking action according to the difference between the second time parameter and the preset fault tolerance time; or, Controlling the motor to perform a tripping action according to the difference between the third time parameter and the preset fault tolerance time; or, The motor is controlled to perform a gate opening and unlocking action according to a difference between the fourth time parameter and the preset fault tolerance time.

8. The circuit breaker control method according to claim 2, characterized in that: The target control action is a closing execution action, and after determining that the target control action is completed, the method further includes: Obtaining a first execution time for the operating mechanism to drive the operating handle of the circuit breaker to close the circuit breaker, and controlling the motor to continue rotating in the rotation direction of the closing execution action for the first execution time; Alternatively, the target control action is a switch-off execution action, and after determining that the target control action is completed, the method further includes: The second execution time length during which the operating mechanism drives the operating handle of the circuit breaker to open the circuit breaker is obtained, and the motor is controlled to continue rotating in the rotation direction of the closing execution action for the second execution time length.

9. The circuit breaker control method according to claim 1 or 8, characterized in that: After determining that the target control action is completed, the method further includes: Get the preset jitter duration; The motor is controlled to cyclically execute a preset number of forward rotation and reverse rotation, each forward rotation lasts for the jittering duration and each reverse rotation also lasts for the jittering duration.

10. A circuit breaker control system, characterized in that: include: A parameter acquisition module is used to obtain the action time parameters of the motor in the circuit breaker to perform various control actions and obtain the preset fault tolerance time; An execution module, used to control the motor to execute a corresponding target control action according to the action time parameter and the preset fault tolerance time, so as to drive the operation mechanism of the circuit breaker to act; A determination module is used to detect the action position of the operating mechanism, and determine that the target control action is completed when the action position reaches a preset target position corresponding to the target control action or the detection duration reaches a target duration; wherein the target duration is predetermined based on the fault tolerance duration.

11. A circuit breaker, characterized in that: It comprises a memory and a processor; the memory stores a computer program, and the processor is used to run the computer program in the memory to execute the steps in a circuit breaker control method according to any one of claims 1 to 9.

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