Control method and control system of circuit breaker and intelligent circuit breaker

Abstract

The invention relates to the technical field of circuit breaker control, and discloses a control method and a control system of a circuit breaker and an intelligent circuit breaker. The control method of the circuit breaker comprises the following steps: monitoring whether a main loop breaks down or not in real time; when the fault is monitored, judging whether a voltage signal of a tripping assembly of the circuit breaker, which is acquired in real time through the detection circuit, is smaller than a tripping voltage threshold value or not; if the tripping voltage is not smaller than the tripping voltage threshold value, controlling the circuit breaker to continuously execute tripping operation through the control circuit; obtaining a tripping voltage curve of the circuit breaker; the tripping voltage curve is compared with a standard tripping curve; and if the tripping voltage curve is successfully matched with the standard tripping curve, determining that the tripping of the circuit breaker is successful, and stopping controlling the tripping operation of the circuit breaker. According to the control method, after the voltage of the tripping assembly is detected to be not smaller than the tripping voltage, the circuit breaker is controlled to execute the tripping operation, the power supply voltage is prevented from being lowered, and the reliability of the circuit breaker is greatly guaranteed.

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, a control system and an intelligent circuit breaker. Background Art

[0002] With the continuous advancement of science and technology, the application scope of circuit breakers is becoming more and more extensive. The circuit breakers in the prior art are powered by the self-generated power supply generated by mutual induction. Due to the influence of external current fluctuations, the voltage of the self-generated power supply may be too low in certain periods and cannot meet the minimum voltage requirement for stable tripping. In this case, if a tripping command is forcibly issued and the driving circuit is attempted to perform a tripping operation, it may not only cause a tripping failure, but also further lower the already insufficient power supply voltage, thereby seriously affecting the tripping function and reducing the overall reliability of the circuit breaker. Summary of the invention

[0003] In view of this, the embodiments of the present application provide a control method, a control system and an intelligent circuit breaker for a circuit breaker, which can effectively solve the problem in the prior art that tripping failure is caused by the influence of external current fluctuations, thereby seriously affecting the tripping function and reducing the overall reliability of the circuit breaker.

[0004] In a first aspect, an embodiment of the present application provides a circuit breaker control method, comprising:

[0005] Real-time monitoring of the main circuit to see if there is any fault;

[0006] When a fault is detected in the main circuit, determining whether a voltage signal of a tripping component of the circuit breaker obtained in real time by a detection circuit is less than a tripping voltage threshold;

[0007] If the voltage signal is not less than the trip voltage threshold, controlling the circuit breaker to continuously perform the trip operation through the control circuit;

[0008] Obtaining a trip voltage curve of the circuit breaker;

[0009] Comparing the trip voltage curve with a standard trip curve;

[0010] If the trip voltage curve successfully matches the standard trip curve, it is determined that the circuit breaker is successfully tripped, and the control of the tripping operation of the circuit breaker is stopped.

[0011] In some embodiments, it further includes: if the voltage signal is less than the trip voltage threshold, determining again whether the voltage signal is less than the trip voltage threshold after a preset time interval;

[0012] If it is determined again that the voltage signal is not less than the trip voltage threshold, the circuit breaker is controlled by the control circuit to perform a trip operation until the trip is successful;

[0013] If it is determined again that the voltage signal is less than the trip voltage threshold, an alarm mechanism is triggered to issue an alarm.

[0014] In some embodiments, acquiring the standard curve includes: constructing a tripping curve model using a machine learning algorithm, inputting tripping voltage curves under different conditions into the tripping curve model for training, acquiring the standard tripping curve, and saving the standard tripping curve to a database.

[0015] In some embodiments, the method further includes: if the trip voltage curve fails to match the standard trip curve, determining whether the current signal of the main circuit is zero;

[0016] If the current signal is zero, it is determined that the circuit breaker is tripped successfully, the control of the tripping operation of the circuit breaker is stopped, and the tripping voltage curve is input into the tripping curve model for self-learning to update the tripping curve model.

[0017] In some embodiments, before determining whether the voltage signal of the tripping component of the circuit breaker obtained in real time by the detection circuit is less than the tripping voltage threshold, the control method further includes:

[0018] By using the voltage signal obtained in real time by the detection circuit, it is judged in real time whether the tripping component is in a working state;

[0019] If the trip assembly is in a non-working state, an alarm mechanism is triggered to issue an alarm.

[0020] In some embodiments, if the trip voltage curve successfully matches the standard trip curve, the control method further includes:

[0021] Acquiring a current signal of the main circuit;

[0022] Determining whether the current signal is zero;

[0023] If the current signal is zero, it is determined that the circuit breaker is tripped successfully, and the control of the tripping operation of the circuit breaker is stopped;

[0024] If the current signal is not zero, an alarm mechanism is triggered to issue an alarm.

[0025] In some embodiments, the detection circuit includes: a voltage divider branch and a filter branch, the input end of the voltage divider branch is connected to the output end of the trip component, the output end of the voltage divider branch is used to output a voltage signal, the positive pole of the filter branch is used to connect the output end of the voltage divider branch, and the negative pole of the filter branch is used to connect the negative pole of the power supply.

[0026] In some embodiments, the control circuit includes: a switch tube, the control end of the switch tube is used to input a control signal, the input end of the switch tube is connected to the output end of the trip assembly, and the output end of the switch tube is used to connect to the negative pole of the power supply.

[0027] In a second aspect, an embodiment of the present application provides a control system for a circuit breaker, including:

[0028] Fault monitoring module, used to monitor in real time whether the main circuit has faults;

[0029] A voltage judgment module is used to judge whether the voltage signal of the tripping component of the circuit breaker obtained in real time by the detection circuit is less than the tripping voltage threshold when a fault in the main circuit is detected;

[0030] A tripping control module, configured to control the circuit breaker to perform a tripping operation through a control circuit if the voltage signal is not less than the tripping voltage threshold;

[0031] A curve acquisition module, used to acquire a trip voltage curve of the circuit breaker;

[0032] A curve comparison module, used for comparing the trip voltage curve with a standard trip curve;

[0033] The tripping control module is further used to determine that the circuit breaker is successfully tripped if the tripping voltage curve successfully matches the standard tripping curve, and stop controlling the tripping operation of the circuit breaker.

[0034] In a third aspect, an embodiment of the present application provides an intelligent circuit breaker, the intelligent circuit breaker comprising a processor and a memory, the memory storing a computer program, and the processor being configured to execute the computer program to implement the above-mentioned circuit breaker control method.

[0035] The embodiments of the present application have the following beneficial effects:

[0036] The control method of the circuit breaker of the embodiment of the present application includes: real-time monitoring of whether the main circuit fails; when the main circuit fails, judging whether the voltage signal of the tripping component of the circuit breaker obtained in real time by the detection circuit is less than the tripping voltage threshold; if the voltage signal is not less than the tripping voltage threshold, controlling the circuit breaker to continuously perform the tripping operation through the control circuit; obtaining the tripping voltage curve of the circuit breaker; by comparing the tripping voltage curve with the standard tripping curve; if the tripping voltage curve successfully matches the standard tripping curve, it is determined that the circuit breaker is successfully tripped, and the control of the tripping operation of the circuit breaker is stopped. This control method controls the circuit breaker to perform the tripping operation only after detecting that the voltage of the tripping component is not less than the tripping voltage, avoiding lowering the power supply voltage, and greatly ensuring the reliability of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 A first flow chart of a circuit breaker control method according to an embodiment of the present application is shown;

[0039] Figure 2 A circuit diagram showing a detection circuit and a control circuit of an embodiment of the present application;

[0040] Figure 3 A second flow chart showing the control method of the circuit breaker according to the embodiment of the present application;

[0041] Figure 4 A fourth flow chart showing a method for controlling a circuit breaker according to an embodiment of the present application;

[0042] Figure 5 A fifth flow chart showing a method for controlling a circuit breaker according to an embodiment of the present application is shown;

[0043] Figure 6 A sixth flow chart showing a method for controlling a circuit breaker according to an embodiment of the present application is shown;

[0044] Figure 7 A structural schematic diagram of a control system of a circuit breaker according to an embodiment of the present application is shown.

[0045] Description of main component symbols:

[0046] 10: Detection circuit; 11: Trip component. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0048] The components of the embodiments of the present application generally described and shown in the drawings herein may be arranged and designed in various configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0049] Hereinafter, the terms "including", "having" and their cognates that can be used in various embodiments of the present application are intended only to indicate specific features, numbers, steps, operations, elements, components or a combination of the foregoing items, and should not be understood as first excluding the existence of one or more other features, numbers, steps, operations, elements, components or a combination of the foregoing items or increasing the possibility of one or more features, numbers, steps, operations, elements, components or a combination of the foregoing items. In addition, the terms "first", "second", "third" and the like are only used to distinguish descriptions and cannot be understood as indicating or implying relative importance.

[0050] Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meanings as those generally understood by those skilled in the art to which the various embodiments of the present application belong. The terms (such as those defined in generally used dictionaries) will be interpreted as having the same meanings as the contextual meanings in the relevant technical field and will not be interpreted as having idealized meanings or overly formal meanings unless clearly defined in the various embodiments of the present application.

[0051] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0052] Taking into account the problem in the prior art that tripping failure is caused by the influence of external current fluctuations, thereby seriously affecting the tripping function and reducing the overall reliability of the circuit breaker, the present application provides a control method, a control system and an intelligent circuit breaker for a circuit breaker. The control method controls the circuit breaker to perform a tripping operation only after detecting that the voltage of the tripping component is not less than the tripping voltage, thereby avoiding lowering the power supply voltage and greatly ensuring the reliability of the circuit breaker.

[0053] The control method of the circuit breaker is described below in conjunction with some specific embodiments.

[0054] Figure 1 A schematic diagram of a circuit breaker control method according to an embodiment of the present application is shown. Exemplarily, the control method includes steps S101 to S106:

[0055] Step S101, real-time monitoring of whether a main circuit fails.

[0056] The main circuit may be an industrial power supply line, a commercial building power supply line, or a household power supply line. In this embodiment, the circuit breaker is connected in series in the main circuit, and the various parameters in the main circuit are monitored by the built-in sensor in the circuit breaker, and it is determined whether the main circuit fails according to the parameters of the sensor. The sensor can be set according to the actual application situation. For example, the sensor can be one or more combinations of current sensors, voltage sensors, or temperature sensors.

[0057] Exemplarily, the current value of the main circuit is monitored by a current sensor, and if the current value exceeds a preset safety range, it is determined that a fault occurs in the main circuit.

[0058] Step S102: when a fault in the main circuit is detected, it is determined whether a voltage signal of a tripping component of the circuit breaker obtained in real time by a detection circuit is less than a tripping voltage threshold.

[0059] Specifically, the detection circuit 10 is arranged in the circuit breaker and is electrically connected to the tripping component 11 of the circuit breaker. The detection circuit 10 can be any detection circuit. A filter can be arranged in the detection circuit 10 to filter the signal, and an amplifier can be arranged in the detection circuit 10 to amplify the signal. For example, Figure 2 As shown, the detection circuit 10 includes: a voltage-dividing branch and a filtering branch, the input end of the voltage-dividing branch is connected to the output end of the tripping component 11, the output end of the voltage-dividing branch is used to output a voltage signal, the positive electrode of the filtering branch is used to connect the output end of the voltage-dividing branch, and the negative electrode of the filtering branch is used to connect the negative electrode of the power supply. Specifically, the voltage-dividing branch includes a resistor R1 and a resistor R2, and the filtering branch is a filtering capacitor C1. The resistor R1, the resistor R2 and the filtering capacitor C1 are used to detect the voltage of the tripping component 11. The circuit structure is simple, the cost is low, and the accuracy and real-time performance of the detection are guaranteed.

[0060] When a fault occurs in the main circuit, the voltage signal of the tripping component 11 is compared with the tripping voltage threshold to determine whether the tripping component 11 has the tripping capability. The tripping voltage threshold can be set according to the tripping component 11 in the circuit breaker. If the voltage signal is not less than the tripping voltage threshold, the tripping component 11 has the tripping capability; if the voltage signal is less than the tripping voltage threshold, the tripping component 11 has no tripping capability. The voltage signal and the tripping voltage threshold can be compared again after a time set according to the actual application situation, and an alarm mechanism can also be triggered to issue an alarm.

[0061] Further, it is determined whether the voltage signal is less than the trip voltage threshold, such as Figure 3 As shown, the control method further includes steps S301 and S302:

[0062] Step S301, judging whether the trip assembly 11 is in working state by detecting the voltage signal acquired in real time by the circuit 10.

[0063] By detecting the voltage signal of the circuit 10, it is determined in real time whether the trip component 11 is in working state. When a fault is detected in the main circuit, if the trip component 11 is in working state, it is determined whether the voltage signal of the trip component 11 is less than the trip voltage threshold.

[0064] Specifically, if the detection circuit 10 detects the voltage signal of the trip component 11, the trip component 11 is in a working state; if the detection circuit 10 does not detect the voltage signal of the trip component 11, the trip component 11 is in a non-working state.

[0065] Step S302: If the trip assembly 11 is in a non-working state, trigger an alarm mechanism to issue an alarm.

[0066] Specifically, if the detection circuit 10 does not detect the voltage signal of the trip component 11, the trip component 11 is in a non-working state, and the alarm mechanism is triggered. It is understandable that the alarm can be given through the local alarm device indicator light, display screen, etc., or the alarm information can be sent to the relevant equipment through the network interface or protocol for remote alarm, so that relevant personnel can perform maintenance.

[0067] Before using the voltage signal obtained by the detection circuit 10 to determine whether the trip component 11 has the tripping ability, the voltage signal is first used to determine the working state of the trip component 11. After ensuring that the trip component 11 is in the working state, it is then determined whether the trip component 11 has the tripping ability. This helps to stabilize the operation of the system and reduce potential safety hazards. In addition, an alarm is issued when it is determined that the trip component 11 is in the non-working state, which greatly improves the safety and reliability of the system and ensures the safety of the equipment and the surrounding environment.

[0068] Step S103: if the voltage signal is not less than the trip voltage threshold, the circuit breaker is controlled by the control circuit to continuously perform the trip operation.

[0069] If the voltage signal is greater than or equal to the trip voltage threshold, the trip assembly 11 has a tripping capability, and the circuit breaker is controlled to trip by the control circuit. It is understandable that any control element can be set in the control circuit, for example, Figure 2 As shown, the control circuit includes: a switch tube Q1, a control end of the switch tube Q1 is used to input a control signal, an input end of the switch tube Q1 is connected to an output end of the trip component 11, and an output end of the switch tube Q1 is used to connect to a negative electrode of a power supply. It is understandable that the switch tube in this embodiment is a MOS tube, and as other implementations, the switch tube may also be a triode, a field effect tube, etc.

[0070] Specifically, after the tripping component 11 has the tripping capability, the switch tube Q1 is controlled to be continuously turned on, so that the coil remains energized until the circuit breaker is successfully tripped, and the switch tube Q1 is controlled to be turned off. By setting the switch tube Q1, it is ensured that the switch tube Q1 is always in the on state when the circuit breaker performs the tripping operation, thereby further ensuring the reliability of the circuit breaker.

[0071] Step S104, obtaining a trip voltage curve of the circuit breaker.

[0072] Specifically, by obtaining the voltage signal of the tripping component 11 corresponding to each time in the tripping process, a voltage curve is generated according to the relationship data between the voltage signal and time in the tripping process. The number of data points can be set according to the actual application situation. For example, the data points can be (t1, V1), (t2, V2)…(t n ,V n ), where t is time and V is the voltage at the corresponding moment.

[0073] Step S105, comparing the trip voltage curve with the standard trip curve.

[0074] The standard tripping curve can be set according to the actual application situation. The standard tripping curve can be a tripping curve for the first successful tripping of the circuit breaker; the standard tripping curve can also be a tripping curve obtained by training using the tripping curves under different working conditions; the standard tripping curve can also be a tripping curve obtained by training using the tripping curves under different load conditions.

[0075] Exemplarily, in one implementation, a tripping curve model is constructed using a machine learning algorithm, tripping voltage curves under different conditions are input into the tripping curve model for training, a standard tripping curve is obtained, and the standard tripping curve is saved in a database.

[0076] Exemplarily, the standard tripping curve is a tripping curve obtained by training the tripping curves under different working conditions and different load conditions.

[0077] First, data collection and preprocessing are performed. Specifically, the actual operation data of the circuit breaker is collected, including but not limited to current, voltage, temperature, timestamp, environmental conditions, etc. The specific information of each tripping event is recorded, such as the triggering cause, tripping time, state changes before and after tripping, etc., as labels for training the model, and meaningful features are extracted from the raw data, such as peak current, duration, temperature change rate, etc., to enhance the expressiveness of the model.

[0078] A machine learning algorithm is then selected, and exemplary, a linear regression is used to establish a relationship between the voltage and time of the trip assembly 11 .

[0079] Regression model: y = x0 + βx

[0080] Wherein, y represents the voltage before the circuit breaker trips, x represents the time, x0 represents the voltage after the circuit breaker trips, and β represents the slope formed by each voltage and time.

[0081] Specifically, y ≥ V th1 , where V th1 Indicates the trip voltage threshold, x0≤V th2 , where V th2 Indicates the peak and valley voltage after the circuit breaker trips.

[0082] Where n represents the number of data points, t i represents the i-th time point, V i Represents the i-th voltage value.

[0083] The data set is divided into a training set and a test set to ensure that the model can generalize to unseen data. K-fold cross validation is used to evaluate the model performance to avoid overfitting. Then, the trip voltage curves under different conditions are used as input features, and the training model learns the mapping relationship between these conditions and the tripping behavior, and outputs the target variables such as the voltage and time of the tripping component 11.

[0084] A tripping curve model is constructed based on time series data, and the model is designed to automatically update weights or structures according to new data to maintain the effectiveness and accuracy of the model.

[0085] The tripping curve model is used to train the tripping events, obtain the standard tripping curve, and save the standard tripping curve to the database.

[0086] Comparing the trip voltage curve with the standard trip curve includes: calculating the trip data, comparing the parameters of the regression model with the historical data, and judging whether the current trip behavior is a complete trip behavior.

[0087] Step S106: If the trip voltage curve successfully matches the standard trip curve, it is determined that the circuit breaker is successfully tripped, and the control of the tripping operation of the circuit breaker is stopped.

[0088] If the models match, the circuit breaker is tripped successfully and the control switch Q1 is turned off.

[0089] Further, such as Figure 4 As shown, after step S105, the control method further includes steps S501-S502:

[0090] Step S501: If the trip voltage curve fails to match the standard trip curve, it is determined whether the current signal of the main circuit is zero.

[0091] If the models do not match, whether the tripping component 11 is successfully tripped is determined by monitoring the current of the main circuit in real time.

[0092] Step S502: if the current signal is zero, it is determined that the circuit breaker is tripped successfully, the control of the circuit breaker tripping operation is stopped, and the tripping voltage curve is input into the tripping curve model for self-learning to update the tripping curve model.

[0093] Specifically, if the current signal of the main circuit is zero, the circuit breaker is tripped successfully, the switch tube Q1 is controlled to be turned off, and the trip voltage curve is input into the model. The system performs self-learning, updates the parameters in the regression model, and improves the model. This enables the trip component 11 to adapt to different working conditions, greatly improving the adaptability and reliability of the circuit breaker.

[0094] In an optional embodiment, if Figure 5 As shown, after step S102, the control method further includes steps S601 to S603:

[0095] Step S601: if the voltage signal is less than the trip voltage threshold, determine again after a preset time whether the voltage signal is less than the trip voltage threshold.

[0096] It is understandable that the preset time can be set according to actual application conditions.

[0097] Step S602: If it is determined again that the voltage signal is not less than the trip voltage threshold, the circuit breaker is controlled by the control circuit to perform a trip operation until the trip is successful.

[0098] If the voltage signal after the preset waiting time is not less than the trip voltage threshold, the trip assembly 11 has the tripping capability, and controls the switch tube Q1 to be turned on until the circuit breaker is successfully tripped.

[0099] Step S603: If it is determined again that the voltage signal is less than the trip voltage threshold, an alarm mechanism is triggered to issue an alarm.

[0100] If the voltage signal after waiting for the preset time is less than the trip voltage threshold, the trip assembly 11 has no tripping capability, and an alarm mechanism is triggered so that relevant personnel can perform maintenance.

[0101] In this embodiment, when it is determined that the voltage signal is less than the tripping voltage threshold, it is determined again after waiting for a preset time whether the voltage signal is less than the tripping voltage threshold. If it is not less than, the circuit breaker is controlled to trip; if it is less than, an alarm is issued, which can reduce the impact of transient interference, prevent misoperation, and ensure the safety and stability of the power system.

[0102] In an optional embodiment, if Figure 6As shown, in step S106, if the trip voltage curve successfully matches the standard trip curve, the control method further includes steps S701 to S704:

[0103] Step S701, obtaining the current signal of the main circuit.

[0104] The current signal of the main circuit is obtained through the built-in sensor or acquisition circuit.

[0105] Step S702, determining whether the current signal is zero.

[0106] Whether the circuit breaker is tripped successfully is determined by judging the current signal of the main circuit.

[0107] Step S703: if the current signal is zero, it is determined that the circuit breaker is tripped successfully, and the control of the tripping operation of the circuit breaker is stopped.

[0108] If the current signal in the main circuit is zero, the circuit breaker is tripped successfully and the control switch tube Q1 is turned off.

[0109] Step S704: if the current signal is not zero, trigger an alarm mechanism to issue an alarm.

[0110] If the current signal of the main circuit is not zero, the circuit breaker has not successfully disconnected the main circuit, the circuit breaker tripping is unsuccessful, and the alarm mechanism is triggered to sound an alarm.

[0111] In this embodiment, after comparing the trip voltage curve with the standard trip curve, it is determined whether the circuit breaker has been successfully tripped by monitoring the current signal of the main circuit. The double detection mechanism ensures that the operating state of the circuit breaker can be accurately determined, further improving the safety and reliability of the system.

[0112] like Figure 7 As shown, based on the method of the above embodiment, this embodiment provides a control system for a circuit breaker. Exemplarily, the control system 100 includes:

[0113] The fault monitoring module 110 is used to monitor in real time whether a fault occurs in the main circuit;

[0114] The voltage judgment module 120 is used to judge whether the voltage signal of the tripping component of the circuit breaker obtained in real time by the detection circuit is less than the tripping voltage threshold when a fault in the main circuit is detected;

[0115] A trip control module 130, configured to control the circuit breaker to perform a trip operation through a control circuit if the voltage signal is not less than a trip voltage threshold;

[0116] A curve acquisition module 140, used to acquire a trip voltage curve of a circuit breaker;

[0117] A curve comparison module 150, for comparing the trip voltage curve with the standard trip curve;

[0118] The trip control module 130 is also used to determine that the circuit breaker is successfully tripped if the trip voltage curve successfully matches the standard trip curve, and stop controlling the circuit breaker tripping operation.

[0119] It can be understood that the device of this embodiment corresponds to the control method of the above embodiment, and the options in the above embodiment are also applicable to this embodiment, so they will not be described repeatedly here.

[0120] The present application also provides an intelligent circuit breaker. Exemplarily, the intelligent circuit breaker includes a processor and a memory, wherein the memory stores a computer program, and the processor runs the computer program to enable the device to execute the above-mentioned circuit breaker control method or the functions of each module in the above-mentioned circuit breaker control system.

[0121] Among them, the processor can be an integrated circuit chip with signal processing capabilities. The processor can be a general-purpose processor, including a central processing unit (CPU), a graphics processing unit (GPU), a network processor (NP), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or at least one of other programmable logic devices, discrete gates or transistor logic devices, and discrete hardware components. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc., which can implement or execute the disclosed methods, steps and logic block diagrams in the embodiments of the present application.

[0122] The memory may be, but is not limited to, a random access memory (RAM), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable read-only memory (EEPROM), etc. The memory is used to store a computer program, and the processor may execute the computer program accordingly after receiving an execution instruction.

[0123] The present application also provides a computer-readable storage medium for storing the computer program used in the above-mentioned terminal device. For example, the computer-readable storage medium may include but is not limited to: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.

[0124] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and structure diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in an alternative implementation, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the structure diagram and / or the flow diagram, and the combination of boxes in the structure diagram and / or the flow diagram, can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0125] In addition, the functional modules or units in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0126] If the functions are implemented in the form of software function modules 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 the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a smart phone, a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the various embodiments of the present application.

[0127] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application.

Claims

1. A circuit breaker control method, characterized in that: include: Real-time monitoring of the main circuit to see if there is any fault; When a fault is detected in the main circuit, determining whether a voltage signal of a tripping component of the circuit breaker obtained in real time by a detection circuit is less than a tripping voltage threshold; If the voltage signal is not less than the trip voltage threshold, controlling the circuit breaker to continuously perform the trip operation through the control circuit; Obtaining a trip voltage curve of the circuit breaker; Comparing the trip voltage curve with a standard trip curve; If the trip voltage curve successfully matches the standard trip curve, it is determined that the circuit breaker is successfully tripped, and the control of the tripping operation of the circuit breaker is stopped.

2. The circuit breaker control method according to claim 1, characterized in that: Also includes: If the voltage signal is less than the trip voltage threshold, determining again after a preset time whether the voltage signal is less than the trip voltage threshold; If it is determined again that the voltage signal is not less than the trip voltage threshold, the circuit breaker is controlled by the control circuit to perform a trip operation until the trip is successful; If it is determined again that the voltage signal is less than the trip voltage threshold, an alarm mechanism is triggered to issue an alarm.

3. The circuit breaker control method according to claim 1, characterized in that: The acquisition of the standard tripping curve includes: A tripping curve model is constructed using a machine learning algorithm, the tripping voltage curves under different conditions are input into the tripping curve model for training, the standard tripping curve is obtained, and the standard tripping curve is saved in a database.

4. The circuit breaker control method according to claim 3, characterized in that: Also includes: If the trip voltage curve fails to match the standard trip curve, determining whether the current signal of the main circuit is zero; If the current signal is zero, it is determined that the circuit breaker is tripped successfully, the control of the tripping operation of the circuit breaker is stopped, and the tripping voltage curve is input into the tripping curve model for self-learning to update the tripping curve model.

5. The circuit breaker control method according to claim 1, characterized in that: Before determining whether the voltage signal of the tripping component of the circuit breaker obtained in real time by the detection circuit is less than the tripping voltage threshold, the control method further includes: By using the voltage signal obtained in real time by the detection circuit, it is judged in real time whether the tripping component is in a working state; If the trip assembly is in a non-working state, an alarm mechanism is triggered to issue an alarm.

6. The circuit breaker control method according to claim 3, characterized in that: If the trip voltage curve successfully matches the standard trip curve, the control method further includes: Acquiring a current signal of the main circuit; Determining whether the current signal is zero; If the current signal is zero, it is determined that the circuit breaker is tripped successfully, and the control of the tripping operation of the circuit breaker is stopped; If the current signal is not zero, an alarm mechanism is triggered to issue an alarm.

7. The circuit breaker control method according to claim 1, characterized in that: The detection circuit includes: a voltage divider branch and a filter branch, the input end of the voltage divider branch is connected to the output end of the trip assembly, the output end of the voltage divider branch is used to output a voltage signal, the positive electrode of the filter branch is used to connect the output end of the voltage divider branch, and the negative electrode of the filter branch is used to connect the negative electrode of the power supply.

8. The circuit breaker control method according to claim 1, characterized in that: The control circuit includes: a switch tube, a control end of the switch tube is used to input a control signal, an input end of the switch tube is connected to an output end of the trip assembly, and an output end of the switch tube is used to connect to a negative pole of a power supply.

9. A control system for a circuit breaker, characterized in that: include: Fault monitoring module, used to monitor in real time whether the main circuit has faults; A voltage judgment module is used to judge whether the voltage signal of the tripping component of the circuit breaker obtained in real time by the detection circuit is less than the tripping voltage threshold when a fault in the main circuit is detected; A tripping control module, configured to control the circuit breaker to perform a tripping operation through a control circuit if the voltage signal is not less than the tripping voltage threshold; A curve acquisition module, used to acquire a trip voltage curve of the circuit breaker; A curve comparison module, used for comparing the trip voltage curve with a standard trip curve; The tripping control module is further used to determine that the circuit breaker is successfully tripped if the tripping voltage curve successfully matches the standard tripping curve, and stop controlling the tripping operation of the circuit breaker.

10. An intelligent circuit breaker, characterized in that: include: The intelligent circuit breaker comprises a processor and a memory, wherein the memory stores a computer program, and the processor is used to execute the computer program to implement the circuit breaker control method according to any one of claims 1 to 8.

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