Intelligent circuit breaker-based switching-on and switching-off event comprehensive judgment circuit and judgment method thereof

Abstract

The invention discloses an intelligent circuit breaker-based opening and closing event comprehensive judgment circuit and a judgment method thereof, and relates to the technical field of intelligent circuit breakers, the intelligent circuit breaker comprises an intelligent circuit breaker body and a circuit board, a microcontroller circuit and a driving circuit are embedded in the circuit board, and the circuit board is used for sending a PWM waveform to trigger a trip coil of the intelligent circuit breaker. Executing the tripping action of the intelligent circuit breaker; the microcontroller circuit is connected with a passive node feedback interface used for feeding back an opening signal and a closing signal of the circuit breaker; and the microcontroller circuit is provided with a switching-on and switching-off logic judgment rule, carries out switching-on and switching-off event judgment based on the received switching-off instruction and the switching-on instruction, and carries out detection based on an alarm event and a switch fault event generated by the intelligent circuit breaker to obtain a switching-on and switching-off event recording result. The invention provides a novel comprehensive judgment technology for the opening and closing events of the intelligent circuit breaker, and the accuracy of judging the action reason of the intelligent circuit breaker is improved.

Description

Technical Field

[0001] The present application relates to the technical field of intelligent circuit breakers, and in particular to a comprehensive judgment circuit for opening and closing events based on intelligent circuit breakers and a judgment method thereof. Background Art

[0002] With the development of intelligent power systems, they are gradually being replaced by intelligent circuit breakers that integrate a variety of advanced technologies. Intelligent circuit breakers not only inherit the basic protection functions of traditional switches, but also integrate multidisciplinary knowledge such as sensor technology, microelectronics technology, edge computing technology, communication technology, and Internet of Things technology, providing a solid foundation for the safe and intelligent operation of distribution systems.

[0003] Although smart circuit breakers are more intelligent in function, there are still many deficiencies in the existing technology for determining the cause of circuit breaker opening and closing events. For example, in some special application scenarios, for safety reasons, it may be necessary to limit or disable the remote control closing function, which makes it more difficult to determine the cause of the circuit breaker's operation, because in addition to remote control, there are many other factors that may cause the operation of the circuit breaker, such as manual operation, power protection needs, maintenance status, etc.; and smart circuit breakers have functions such as overload long delay protection, short circuit short delay and instantaneous protection, voltage anomaly (overvoltage, undervoltage, loss of voltage) protection, phase loss protection, zero break protection and overtemperature protection. When these protection mechanisms are triggered, the circuit breaker will automatically perform an opening action to prevent the fault from expanding; however, the existing technology lacks an effective means to distinguish these complex trigger conditions, which makes it easy to cause confusion when analyzing why the circuit breaker operates, and it is impossible to accurately locate the root cause of the problem.

[0004] Due to the above reasons, when a circuit breaker operates unexpectedly, it is often difficult for operation and maintenance personnel to quickly determine which specific condition triggered the operation, which in turn affects the efficiency of rapid fault diagnosis and troubleshooting. This is an obvious shortcoming for modern power systems that pursue efficient operation and maintenance and reduce power outage time. Therefore, it is particularly important to develop a new comprehensive judgment technology for intelligent circuit breaker opening and closing events. Summary of the invention

[0005] In order to provide a new comprehensive judgment technology for the opening and closing events of intelligent circuit breakers and improve the accuracy of the judgment of the cause of the operation of the intelligent circuit breaker, the present application provides a comprehensive judgment circuit for the opening and closing events based on the intelligent circuit breaker and a judgment method thereof.

[0006] In the first aspect, the invention objective of the present application is achieved by adopting the following technical solutions: Based on the comprehensive judgment circuit of the opening and closing events of the intelligent circuit breaker, the intelligent circuit breaker includes an intelligent circuit breaker body and a circuit board, a microcontroller circuit and a drive circuit are embedded on the circuit board, and the microcontroller circuit is connected to the drive circuit through a control signal interface, and is used to send a PWM waveform to trigger the tripping coil of the intelligent circuit breaker to perform the tripping action of the intelligent circuit breaker; The microcontroller circuit is connected to a passive node feedback interface for feeding back the circuit breaker open position signal and the circuit breaker closed position signal; The microcontroller circuit is provided with a switch-on and switch-off logic judgment rule. In the switch-on and switch-off logic judgment rule, the microcontroller circuit judges the switch-on and switch-off events based on the received switch-on and switch-off instructions, and performs detection based on the alarm events and switch fault events generated by the intelligent circuit breaker to obtain the switch-on and switch-off event record results.

[0007] By adopting the above technical solution, a judgment circuit is provided which can record the closing and opening events of the intelligent circuit breaker in real time during the actual operation and perform fault logic judgment. In addition to remote control, there are many other factors that may cause the operation of the intelligent circuit breaker, such as manual operation, power protection demand, maintenance status, etc. The power protection demand makes the intelligent circuit breaker have overload long delay protection, short circuit short delay and instantaneous protection, voltage abnormality (overvoltage, undervoltage, loss of voltage) protection, phase loss protection, zero break protection and overtemperature protection. When these protection mechanisms are triggered, the circuit breaker will automatically perform the opening action to prevent the fault from expanding. Therefore, the tripping trigger factors that trigger the intelligent circuit breaker to generate a tripping event include remote opening (remote control opening and manual opening), overload long delay protection, short circuit short delay protection, short circuit instantaneous protection, overvoltage protection, undervoltage protection, loss of voltage protection, phase loss protection, zero break protection, overtemperature protection, etc. In the circuit of the intelligent circuit breaker, when the power protection demand event is triggered or the remote control of the opening is received, the intelligent circuit breaker will automatically open the circuit breaker to prevent the fault from expanding. When a command (including a closing command and an opening command) is issued, the microcontroller circuit sends a PWM waveform to the tripping coil through the control signal interface to execute the tripping action of the intelligent circuit breaker. At the same time, the microcontroller circuit obtains the open and closed position feedback of the passive interface of the circuit breaker mechanical connecting rod drive through the passive node feedback interface to obtain the current circuit breaker open position signal and circuit breaker closed position signal, and combines the opening and closing logic judgment rules to comprehensively judge and analyze the power protection state, trip time, and maintenance state of the intelligent circuit breaker in a logical judgment manner, so as to obtain the final opening and closing event recording results, wherein the opening and closing event recording results include the opening execution state, the closing execution state, the abnormal tripping event, the maintenance time, etc. The opening and closing event recording results enable the intelligent circuit breaker to have the corresponding tripping and alarm event recording functions for subsequent query, thereby improving the flexible adaptability of the intelligent circuit breaker; the present invention provides a new intelligent circuit breaker opening and closing event comprehensive judgment technology based on the opening and closing event comprehensive judgment circuit, which is conducive to improving the accuracy of the judgment of the action cause of the intelligent circuit breaker.

[0008] In a preferred example of the present application: the microcontroller circuit includes a main control chip, and the driving circuit includes a driving switch tube; the driving switch tube is connected between the driving end of the main control chip and the control signal interface; the program burning end of the main control chip is connected to a debugging interface, and the main control chip is also provided with an input side temperature detection interface and an output side temperature detection interface for connecting a temperature sensor.

[0009] By adopting the above technical solution, the present invention directly connects the driving end of the main control chip (HC32F460JETA) to the driving switch tube (such as a triode), ensuring that the PWM waveform signal can be accurately transmitted to the trip coil, which not only improves the signal transmission efficiency, but also enhances the response speed of the system; the main control chip is provided with an incoming line temperature detection interface and an outgoing line temperature detection interface for connecting a temperature sensor, which can monitor the temperature changes inside and outside the intelligent circuit breaker in real time to realize the temperature monitoring function; the program burning end of the main control chip is connected with a debugging interface, allowing developers to update firmware or troubleshoot problems at any time point during the product life cycle, and is also conducive to the burning of software control programs and the optimization and update of control parameters (such as threshold signals).

[0010] In a preferred example of the present application: the driving switch tube includes a transistor, the base of the transistor is connected to the main control chip, the emitter of the transistor is grounded, and the collector of the transistor is connected to the control signal interface; the model of the main control chip is HC32F460JETA.

[0011] By adopting the above technical solution, a triode is used as the driving switch tube, and the specific connection method of its base, emitter and collector ensures the stability and controllability of the current path; the HC32F460JETA chip is a high-performance, low-power 32-bit microcontroller (MCU) based on the ARMCortex-M4 core, which has a floating-point unit (FPU) and is suitable for applications that require efficient processing capabilities.

[0012] In a preferred example of the present application: the opening command includes a remote opening command and a manual opening command; The opening and closing logic judgment rules include: When receiving a remote opening command, the switch state of the intelligent circuit breaker is read to determine whether the switch of the intelligent circuit breaker is in the opening position and the power-saving state. If the switch is in the closing state and not in the power-saving state, the opening action is performed, and a switch state signal is obtained. Based on the switch state signal, it is determined whether the opening is successfully performed, and a first opening and closing event record result is obtained; if the switch is not in the closing state, it is determined in sequence whether a tripping event is generated, whether it is in the maintenance state, and whether it is a manual opening, and a second opening and closing event record result is output, and the second opening and closing event record result includes a tripping event, an event reporting an under-maintenance event, and an event reporting a switch malfunction event; When receiving a local manual opening command or executing an opening action, obtaining an opening pulse signal, reading a switch status signal, and determining whether the opening is successful, obtaining a third opening and closing event record result; Based on the first opening and closing event recording result, the second opening and closing event recording result and the third opening and closing event recording result, a final opening and closing event recording result is obtained.

[0013] By adopting the above technical solution, the present invention provides a precise processing flow for instructions from different sources (such as manual opening instructions and remote opening instructions), which can accurately respond to user needs in different operating environments. When receiving a remote opening instruction, the system first reads the switch state of the intelligent circuit breaker to determine whether it is in the closed position and not in the power-saving state. This double verification mechanism ensures that the opening action is performed only when specific conditions are met, thereby avoiding unnecessary misoperation; when the switch is not in the closed position, the system will further check whether there is a tripping event, whether it is in the maintenance state or whether it is a manual opening. This series of judgment steps effectively prevents misjudgment caused by other factors; finally, whether it is remote opening or on-site manual opening, the system will obtain the latest switch status signal and judge whether the opening is successful based on it. This step-by-step confirmation mechanism greatly reduces the risk of operation failure due to signal transmission errors or mechanical failures.

[0014] In the second aspect, the invention objective of the present application is achieved by adopting the following technical solutions: The comprehensive judgment method for the opening and closing events based on the intelligent circuit breaker is applied to the comprehensive judgment circuit for the opening and closing events based on the intelligent circuit breaker as described above, and the method comprises: After the intelligent circuit breaker is started, the microcontroller circuit sends a PWM waveform to the drive circuit to trigger the trip coil of the intelligent circuit breaker to perform a tripping action; Based on the microcontroller circuit and the passive node feedback interface, the open position signal and the closed position signal from the intelligent circuit breaker body are received and processed in real time to monitor the current switch state of the intelligent circuit breaker; the microcontroller circuit receives the opening command and the closing command, and enters the corresponding processing flow based on the received command type; the opening command includes a remote opening command and a manual opening command; According to the preset opening and closing logic judgment rules, the microcontroller circuit analyzes the received opening and closing instructions, and detects the alarm events and switch fault events generated by the intelligent circuit breaker: For each opening and closing command, the microcontroller circuit first reads the current switch state of the intelligent circuit breaker to determine whether the preset execution conditions are met; If the preset execution conditions are met, the corresponding opening or closing action is performed, and the latest switch status signal is obtained to confirm whether the operation is successful; If the preset execution condition is not met or the operation fails, check whether there are abnormal influencing factors, and record the corresponding event results to obtain the final opening and closing event record results.

[0015] By adopting the above technical solution, an efficient and accurate operation control method is provided. By utilizing the passive node feedback interface to continuously monitor the switch status of the intelligent circuit breaker, it is ensured that the system can respond to any state changes in a timely manner, thereby enhancing the accuracy of the operation. For each operation, the system will obtain the latest switch status signal for secondary confirmation to ensure the success rate and reliability of the operation. In addition, each opening and closing event and the reasons behind it are recorded in detail to form a complete event log, which is convenient for users and maintenance personnel to track historical operation records.

[0016] In a preferred example of the present application: the intelligent circuit breaker is connected to a three-phase current sensor and a three-phase voltage sensor; the microcontroller circuit is respectively provided with a phase difference current threshold signal and a phase maximum current threshold signal based on the three-phase detection current signal of the three-phase current sensor; the microcontroller circuit is respectively provided with a phase difference voltage threshold signal and a phase maximum voltage threshold signal based on the three-phase voltage detection signal of the three-phase voltage sensor; the method further includes: Calculate and obtain the phase current difference between the A-phase current detection signal, the B-phase current detection signal, and the C-phase current detection signal to obtain a phase current difference signal; compare the phase current difference signal with the phase difference current threshold signal, and output a current abnormality prompt signal when the phase current difference signal is greater than the phase difference current threshold signal; and compare the A-phase current detection signal, the B-phase current detection signal, and the C-phase current detection signal with the phase maximum current threshold signal one by one to obtain corresponding current comparison results, and trigger a current abnormality prompt instruction when the current comparison result meets the preset current warning condition; and / or, Calculate and obtain the phase voltage difference between the A phase voltage detection signal, the B phase voltage detection signal and the C phase voltage detection signal to obtain a phase voltage difference signal; compare the phase voltage difference signal with a phase difference voltage threshold signal, output a voltage abnormality warning signal when the phase voltage difference signal is greater than the phase difference voltage threshold signal, and compare the A phase voltage detection signal, the B phase voltage detection signal and the C phase voltage detection signal with the phase highest voltage threshold signal one by one to obtain corresponding voltage comparison results, and trigger a voltage abnormality warning instruction when the voltage comparison result meets a preset voltage warning condition.

[0017] By adopting the above technical solutions, introducing three-phase current and voltage sensors, setting reasonable thresholds, and implementing efficient anomaly detection and response mechanisms, the accuracy and safety of comprehensive judgment of intelligent circuit breaker opening and closing events are significantly improved; the judgment and generation conditions of current abnormality prompt signals can help to quickly identify the current imbalance problem in the three-phase current of the intelligent circuit breaker; similarly, the judgment and generation conditions of voltage abnormality prompt signals can help to quickly identify the voltage imbalance problem in the three-phase voltage of the intelligent circuit breaker, and help to warn of voltage abnormalities in advance to avoid damage to equipment due to excessively high or low voltage; by continuously monitoring the changes in current and voltage, and making real-time comparisons based on preset thresholds, the system can detect abnormalities in the first place and take corresponding measures, which is conducive to the monitoring, use and maintenance of intelligent circuit breakers.

[0018] In a preferred example of the present application: the intelligent circuit breaker is further connected to an ambient temperature sensor, and the method further includes: The microcontroller circuit compares a preset reference threshold signal with a real-time detected ambient temperature detection signal to obtain a temperature threshold difference; Comparing the temperature threshold difference with a preset first critical difference and a preset second critical difference; When the temperature threshold difference is greater than or equal to the preset first critical difference and less than the second critical difference, adjusting the temperature threshold signal by increasing or decreasing it based on the first preset temperature adjustment ratio; When the temperature threshold difference is greater than the second critical difference, adjusting the temperature threshold signal by increasing or decreasing it based on a second preset temperature adjustment ratio; When the temperature threshold signal is adjusted to be enlarged or reduced, a temperature threshold adjustment prompt instruction is triggered.

[0019] By adopting the above technical solutions, introducing ambient temperature sensors, setting a reasonable temperature threshold adjustment mechanism, and implementing instant temperature adjustment prompts; by automatically adjusting the temperature threshold signal according to the changes in the current ambient temperature, it is ensured that the most appropriate protection measures can be provided in any environment. For example, the workload is automatically reduced in a high temperature environment, or the protection threshold is appropriately increased in a low temperature environment to prevent false operation, that is, by dynamically adjusting the temperature threshold signal, the intelligent circuit breaker system can effectively prevent the risk of overheating caused by excessively high ambient temperature, and protect the intelligent circuit breaker and its connected equipment from high temperature damage. At the same time, appropriate adjustments can also be made for low temperature environments; at the same time, combined with the data of multiple sensors such as current, voltage and temperature, the microcontroller circuit can perform more complex logical judgments to achieve accurate identification of the causes of opening and closing events.

[0020] In a preferred example of the present application: the method further includes: Collecting multiple sensor data stream information related to each opening and closing event in the intelligent circuit breaker; Generate an event model according to each opening and closing event type, wherein the event model is used to analyze different types of opening and closing events and corresponding sensor data characteristics; Acquire the ambient temperature detection signal and user operation instruction information of the intelligent circuit breaker, input the ambient temperature detection signal and user operation instruction information into the event model, and calculate the occurrence probability of the opening and closing events; Obtain the real-time current change rate and real-time voltage change rate of the intelligent circuit breaker; The real-time current change rate, the real-time voltage change rate and the occurrence probability of the opening and closing events are input into the event model to determine the final circuit breaker state determination information.

[0021] By adopting the above technical solutions, introducing multi-source data fusion, intelligent probability calculation and prediction, final state determination and other measures, the accuracy of comprehensive judgment of intelligent circuit breaker opening and closing events has been significantly improved; specifically, by collecting multiple sensor data stream information related to each opening and closing event in the intelligent circuit breaker, the system can fully grasp the specific situation of each opening and closing event. This includes not only power parameters such as current and voltage, but also multiple information sources such as ambient temperature and user operation instructions; an event model is generated according to each opening and closing event type to analyze different types of opening and closing events and corresponding sensor data characteristics; and the real-time current change rate and real-time voltage change rate monitoring of the intelligent circuit breaker helps to capture the instantaneous state changes of the power system and improve the response speed to emergencies. Through comprehensive analysis of multiple data sources, the system can verify the authenticity and rationality of opening and closing events at multiple levels, reducing erroneous decisions caused by a single factor.

[0022] In the third aspect, the invention objective of the present application is achieved by adopting the following technical solutions: A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the above-mentioned comprehensive judgment method for opening and closing events based on an intelligent circuit breaker are implemented.

[0023] In a fourth aspect, the invention objective of the present application is achieved by adopting the following technical solutions: A computer program product, when the computer program product is run on an intelligent circuit breaker system, enables the intelligent circuit breaker system to execute the comprehensive judgment method for opening and closing events based on the intelligent circuit breaker as claimed in any one of claims 5 to 8.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. The introduction of efficient control mechanisms, strict logical judgment rules, detailed event records and optimized user experience measures significantly improves the accuracy, safety and reliability of comprehensive judgment of intelligent circuit breaker opening and closing events, providing strong support for the intelligent management and maintenance of low-voltage power distribution systems; 2. Generate the first opening and closing event record result, the second opening and closing event record result and the third opening and closing event record result according to different judgment results, and finally integrate them into a complete opening and closing event record. This makes every operation traceable, which is convenient for subsequent fault analysis and maintenance work; for abnormal situations (such as tripping events, maintenance reporting events, switch malfunction reporting events), the system can clearly classify and record them; 3. By dynamically adjusting the temperature threshold signal, the intelligent circuit breaker system can effectively prevent the risk of overheating caused by excessively high ambient temperature and protect the intelligent circuit breaker and its connected equipment from high temperature damage. At the same time, appropriate adjustments can be made for low temperature environments; at the same time, combined with data from multiple sensors such as current, voltage and temperature, the microcontroller circuit can perform more complex logical judgments to accurately identify the causes of opening and closing events. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a circuit diagram of a comprehensive judgment circuit for opening and closing events based on an intelligent circuit breaker in one embodiment of the present application; Figure 2 This is a flow chart of a switch-on and switch-off logic judgment rule in a switch-on and switch-off event comprehensive judgment circuit based on an intelligent circuit breaker in one embodiment of the present application; Figure 3 It is a flow chart of a comprehensive judgment method for opening and closing events based on an intelligent circuit breaker in one embodiment of the present application. DETAILED DESCRIPTION

[0026] The present application is further described in detail below in conjunction with the accompanying drawings.

[0027] In one embodiment, if Figure 1As shown, the present application discloses a comprehensive judgment circuit for the opening and closing events of an intelligent circuit breaker. The intelligent circuit breaker includes an intelligent circuit breaker body and a circuit board (the intelligent circuit breaker body and the circuit board are not shown in the figure), and a microcontroller circuit and a drive circuit are embedded in the circuit board. The microcontroller circuit is connected to the drive circuit through a control signal interface J7, and is used to send a PWM waveform (for example, a pulse width modulation signal of DC12V, a pulse width of 10ms, and an amplitude of 800mA) to trigger a trip coil (not shown in the figure) of the intelligent circuit breaker to perform a tripping action of the intelligent circuit breaker; the microcontroller circuit is connected to a passive node feedback interface J8 for feedback of an open position signal and a closed position signal of the circuit breaker; the microcontroller circuit is provided with an opening and closing logic judgment rule, in which the microcontroller circuit judges the opening and closing events based on the received opening instructions and closing instructions, and detects based on the alarm events and switch fault events generated by the intelligent circuit breaker to obtain the opening and closing event record results.

[0028] Reference Figure 1 ,by Figure 1 Taking the circuit diagram shown in the figure as an example, the microcontroller circuit includes a main control chip U3, and the model of the main control chip U3 is HC32F460JETA; the driving circuit includes a driving switch tube; the driving end of the main control chip U3 is connected to the control signal interface J7 to drive the switch tube; the program burning end of the main control chip U3 is connected to the debugging interface J6, and the main control chip U3 is also provided with an incoming line side temperature detection interface and an outgoing line side temperature detection interface for connecting a temperature sensor (the temperature sensor is a sensor in the prior art, in Figure 1 The driving switch tube includes a transistor, which is an NPN transistor, the base of the transistor is connected to the main control chip U3, the emitter of the transistor is grounded, and the collector of the transistor is connected to the control signal interface J7; in this embodiment, HC32F460JETA drives the transistor to conduct through the first pin, and applies a PWM wave of DC12V, a pulse width of 10ms, and an amplitude of 800mA to the tripping coil through the control signal interface J7 to drive the circuit breaker to trip. The tripping trigger factors of the tripping event include: remote opening, overload long delay protection, short circuit short delay protection, short circuit instantaneous protection, overvoltage protection, undervoltage protection, voltage loss protection, phase loss protection, zero break protection, overtemperature protection, etc.

[0029] Reference Figure 2 , Figure 2The schematic diagram of the judgment logic of the opening and closing logic judgment rules in the comprehensive judgment circuit of the opening and closing events of the intelligent circuit breaker is provided. The opening instruction includes a remote opening instruction and a manual opening instruction. The opening and closing logic judgment rules include: when receiving the remote opening instruction, reading the switch state of the intelligent circuit breaker to judge whether the switch of the intelligent circuit breaker is in the opening position and the power-saving state; if the switch is in the closing state and not in the power-saving state, executing the opening action and obtaining the switch state signal, judging whether the opening is successfully executed based on the switch state signal, and obtaining the first opening and closing event record result; if the switch is not in the closing state, It then judges in turn whether a tripping event occurs, whether it is in maintenance state, and whether it is manual opening, and outputs the second opening and closing event record result, which includes a tripping event, an event reporting an under-maintenance event, and an event reporting a switch malfunction; when receiving a local manual opening command or after executing the opening action, obtains the opening pulse signal, reads the switch status signal, and judges whether the opening is successful, and obtains the third opening and closing event record result; based on the first opening and closing event record result, the second opening and closing event record result, and the third opening and closing event record result, the final opening and closing event record result is obtained. The introduction of efficient control mechanisms, strict logical judgment rules, detailed event records, and optimized user experience measures significantly improves the accuracy, safety, and reliability of the comprehensive judgment of the opening and closing events of intelligent circuit breakers, and provides strong support for the intelligent management and maintenance of low-voltage power distribution systems.

[0030] In one embodiment, a comprehensive judgment method for opening and closing events based on an intelligent circuit breaker is provided, and the comprehensive judgment method for opening and closing events based on an intelligent circuit breaker corresponds to the comprehensive judgment circuit for opening and closing events based on an intelligent circuit breaker in the above embodiment.

[0031] The present application discloses a comprehensive judgment method for opening and closing events based on an intelligent circuit breaker, which specifically includes the following steps: S1: After the smart circuit breaker is started, the microcontroller circuit sends a PWM waveform to the drive circuit to trigger the trip coil of the smart circuit breaker to perform a tripping action.

[0032] In this embodiment, the intelligent circuit breaker startup refers to the intelligent circuit breaker system entering a working state after power-on or reset; the PWM waveform is a pulse modulation signal, and the HC32F460JETA main control chip is used to generate an accurate PWM waveform, which is conducive to ensuring that the PWM waveform parameters (such as frequency and duty cycle) meet the requirements of the trip coil.

[0033] S2: Based on the microcontroller circuit and the passive node feedback interface, the open signal and the closed signal from the intelligent circuit breaker body are received and processed in real time to monitor the current switch state of the intelligent circuit breaker; the microcontroller circuit receives the opening command and the closing command, and enters the corresponding processing flow based on the received command type; the opening command includes the remote opening command and the manual opening command.

[0034] In this embodiment, if Figure 3 As shown, the microcontroller circuit enters the corresponding processing flow according to the type of instruction received, and the circuit breaker open position signal and the break position signal are fed back by the circuit breaker mechanical connecting rod driving the open position and closed position of the passive contact, such as Figure 1 As shown in the J8 interface, the judgment system is connected through the 43rd pin of the main control chip to participate in various logical judgments.

[0035] S3: According to the preset opening and closing logic judgment rules, the microcontroller circuit analyzes the received opening and closing instructions, and detects the alarm events and switch fault events generated by the intelligent circuit breaker: S31: For each opening instruction and closing instruction, the microcontroller circuit first reads the current switch state of the intelligent circuit breaker to determine whether the preset execution conditions are met.

[0036] In this embodiment, when executing the opening command, the preset execution conditions include that the switch is not in the opening position (i.e., the switch is closed) and the intelligent circuit breaker is not in the power protection state and the maintenance state. When executing the closing command, the preset execution conditions include that the switch is in the opening position and is not in the maintenance state. When manually opening and closing the switch, the preset execution condition is to confirm that the intelligent circuit breaker is not in the power protection state and the maintenance state.

[0037] S32: If the preset execution conditions are met, the corresponding opening or closing action is executed, and the latest switch status signal is obtained to confirm whether the operation is successful.

[0038] S33: If the preset execution condition is not met or the operation fails, check whether there are abnormal influencing factors, and record the corresponding event results to obtain the final opening and closing event record results.

[0039] In this embodiment, if the preset execution conditions are met, the microcontroller circuit sends a control signal to the drive circuit to execute the opening or closing action; after the action is completed, the microcontroller circuit immediately re-reads the switch status signal of the intelligent circuit breaker; compares the newly read status signal with the expected result to confirm whether the operation is successful, and if successful, records the operation result; otherwise, enters the exception handling process, for example, the microcontroller circuit checks possible abnormal factors, such as power protection status and maintenance status; according to the inspection results, classifies and records the corresponding event results, such as tripping events, maintenance events, switch malfunction events, etc. All event results are recorded in detail to form a complete opening and closing event record result, such as an opening and closing event record log.

[0040] In one embodiment, the intelligent circuit breaker is connected to a three-phase current sensor and a three-phase voltage sensor; the microcontroller circuit is respectively provided with a phase difference current threshold signal and a phase maximum current threshold signal based on the three-phase detection current signal of the three-phase current sensor, and the microcontroller circuit is respectively provided with a phase difference voltage threshold signal and a phase maximum voltage threshold signal based on the three-phase voltage detection signal of the three-phase voltage sensor; the comprehensive judgment method of the opening and closing events based on the intelligent circuit breaker also includes: S10: Calculate and obtain the phase current difference between the A-phase current detection signal, the B-phase current detection signal, and the C-phase current detection signal to obtain the phase current difference signal; compare the phase current difference signal with the phase difference current threshold signal, and output a current abnormality warning signal when the phase current difference signal is greater than the phase difference current threshold signal; and compare the A-phase current detection signal, the B-phase current detection signal, and the C-phase current detection signal with the phase highest current threshold signal one by one to obtain the corresponding current comparison result, and when the current comparison result meets the preset current warning condition, trigger the current abnormality warning instruction.

[0041] In this embodiment, the three-phase current sensor is used to monitor the current of phase A, phase B and phase C in real time; the phase difference current threshold signal refers to the preset maximum allowable phase-to-phase current difference value; the phase maximum current threshold signal refers to the preset maximum allowable current value of each phase; current abnormality prompt signal: a warning signal issued when a current abnormality is detected.

[0042] Specifically, the microcontroller circuit obtains the current detection signals of phase A, phase B and phase C from the three-phase current sensor, and then calculates the current difference between each phase (i.e., phase AB, phase BC, and phase AC) to obtain the phase current difference signal, and compares the calculated phase current difference signal with the phase difference current threshold signal. If any phase current difference is greater than the phase difference current threshold, a current abnormality prompt signal is output. At the same time, the current detection signals of phase A, phase B and phase C are compared with the corresponding phase maximum current threshold signals. If the current detection signal of a phase exceeds its corresponding maximum current threshold, the current comparison result of the phase is recorded. If the current comparison result meets the preset current warning condition (such as the current of a phase exceeds the threshold for multiple times in a row), the current abnormality prompt instruction is triggered, and the abnormal information is sent to the user or the remote monitoring platform.

[0043] and / or, S20: Calculate and obtain the phase voltage difference between the A phase voltage detection signal, the B phase voltage detection signal and the C phase voltage detection signal to obtain the phase voltage difference signal; compare the phase voltage difference signal with the phase difference voltage threshold signal, and output a voltage abnormality warning signal when the phase voltage difference signal is greater than the phase difference voltage threshold signal, and compare the A phase voltage detection signal, the B phase voltage detection signal and the C phase voltage detection signal with the phase highest voltage threshold signal one by one to obtain the corresponding voltage comparison result, and trigger the voltage abnormality warning instruction when the voltage comparison result meets the preset voltage warning condition.

[0044] In this embodiment, the three-phase voltage sensor is used to monitor the voltages of phase A, phase B and phase C in real time. The phase difference voltage threshold signal refers to the preset maximum allowable phase-to-phase voltage difference value; the phase maximum voltage threshold signal refers to the preset maximum allowable voltage value of each phase; the voltage abnormality prompt signal refers to the warning signal issued when a three-phase voltage abnormality is detected.

[0045] Specifically, the microcontroller circuit obtains the voltage detection signals of phase A, phase B and phase C from the three-phase voltage sensor, and then calculates the voltage difference between each phase (i.e., phase AB, phase BC, phase AC) to obtain a phase voltage difference signal, and compares the calculated phase voltage difference signal with the phase difference voltage threshold signal. If any phase voltage difference is greater than the phase difference voltage threshold, a voltage abnormality prompt signal is output; at the same time, the voltage detection signals of phase A, phase B and phase C are compared with the corresponding phase maximum voltage threshold signals respectively. If the voltage detection signal of a phase exceeds its corresponding maximum voltage threshold, the voltage comparison result of the phase is recorded. If the voltage comparison result meets the preset voltage warning condition (such as the voltage of a phase exceeds the threshold for multiple times in a row, the specific number of times can be defined by oneself, such as 3 to 5 times).

[0046] In one embodiment, the intelligent circuit breaker is further connected to an ambient temperature sensor, and the comprehensive judgment method based on the opening and closing events of the intelligent circuit breaker further includes: S101: The microcontroller circuit compares a preset reference threshold signal with a real-time detected ambient temperature detection signal to obtain a temperature threshold difference.

[0047] In this embodiment, the preset reference threshold signal is a preset standard temperature threshold.

[0048] Specifically, the ambient temperature sensor sends a real-time ambient temperature detection signal to the microcontroller circuit periodically (eg, every 10 minutes), and the microcontroller circuit compares the real-time detected ambient temperature detection signal with a preset reference threshold signal to calculate a temperature threshold difference.

[0049] S102: Compare the temperature threshold difference with a preset first critical difference and a preset second critical difference.

[0050] In this embodiment, the first critical difference is a preset lower critical temperature difference, which is used to preliminarily determine whether the temperature is abnormal; the second critical difference is a preset higher critical temperature difference, which is used to further confirm the degree of temperature abnormality; the temperature threshold difference comparison refers to comparing the calculated temperature threshold difference with the two critical differences.

[0051] S103: When the temperature threshold difference is greater than or equal to a preset first critical difference and less than a second critical difference, adjust the temperature threshold signal by increasing or decreasing it based on a first preset temperature adjustment ratio.

[0052] In this embodiment, when the temperature threshold difference is negative, the temperature threshold signal is amplified, otherwise the temperature threshold signal is reduced.

[0053] Specifically, when the temperature threshold difference is greater than or equal to the preset first critical difference and less than the second critical difference, the adjusted temperature threshold signal is equal to the temperature threshold signal before adjustment plus the value multiplied by the first preset temperature adjustment ratio and the temperature threshold difference.

[0054] S104: When the temperature threshold difference is greater than the second critical difference, adjusting the temperature threshold signal by increasing or decreasing it based on a second preset temperature adjustment ratio.

[0055] Specifically, according to the direction (positive or negative) of the temperature threshold difference, it is determined whether to expand or reduce the temperature threshold signal, that is, when the temperature threshold difference is negative, the temperature threshold signal is expanded, otherwise the temperature threshold signal is reduced.

[0056] S105: When the temperature threshold signal is adjusted to be enlarged or reduced, a temperature threshold adjustment prompt instruction is triggered.

[0057] In this embodiment, whenever the temperature threshold signal is adjusted, the microcontroller circuit generates a temperature threshold adjustment prompt instruction, and sends the prompt instruction to the user interface or remote monitoring platform through a communication interface (such as RS485, CAN bus, etc.).

[0058] In one embodiment, the comprehensive judgment method for the opening and closing events of the intelligent circuit breaker further includes: S111: Collecting multiple sensor data stream information related to each opening and closing event in the intelligent circuit breaker.

[0059] In this embodiment, the multiple sensor data stream information refers to data from multiple source sensors including current, voltage, temperature, switch status, etc.

[0060] Specifically, when the smart circuit breaker is started, the microcontroller circuit initializes all connected sensors (such as three-phase current sensor, three-phase voltage sensor, ambient temperature sensor, etc.). Before and after each opening and closing event, the smart circuit breaker system continuously collects data stream information from each sensor and stores it in a temporary buffer. At the same time, a corresponding opening and closing event identifier is added to each piece of data to ensure that the data is associated with a specific event.

[0061] S112: Generate an event model according to each opening and closing event type, where the event model is used to analyze different types of opening and closing events and corresponding sensor data characteristics.

[0062] In this embodiment, the event model refers to the one used to analyze different types of opening and closing events and corresponding sensor data characteristics; the opening and closing event types include different types of opening and closing events of power protection mechanisms such as normal opening and closing, overload opening, and short circuit opening.

[0063] Specifically, based on historical data and expert experience, a variety of common types of opening and closing events are defined, and key features such as current peak, voltage fluctuation, temperature change, etc. are extracted from the collected sensor data; machine learning algorithms (such as decision trees, support vector machines, etc.) are used to train event models based on historical data so that they can identify different types of opening and closing events and their corresponding features.

[0064] S113: Obtaining an ambient temperature detection signal and user operation instruction information of the intelligent circuit breaker, inputting the ambient temperature detection signal and the user operation instruction information into an event model, and calculating the occurrence probability of the opening and closing events.

[0065] In this embodiment, the user operation instruction information includes user operation information such as remote opening instruction and manual opening instruction.

[0066] Specifically, the above two types of information are input into the event model, and combined with the existing feature library of the model, the probability of occurrence of the opening and closing events under the current conditions is calculated. The calculated probability of occurrence can be used as the basis for safety warnings to help users or maintenance personnel prepare response strategies in advance.

[0067] S114: Acquire the real-time current change rate and the real-time voltage change rate of the intelligent circuit breaker.

[0068] In this embodiment, the real-time current change rate refers to the change amount of current per unit time; the real-time voltage change rate refers to the change amount of voltage per unit time.

[0069] S115: Input the real-time current change rate, the real-time voltage change rate and the occurrence probability of the opening and closing events into the event model to determine the final circuit breaker state determination information.

[0070] In this embodiment, the final circuit breaker state determination information refers to the final state (such as normal, warning, fault, etc.) of the intelligent circuit breaker determined by combining the real-time current change rate, the real-time voltage change rate and the probability of occurrence of the opening and closing events.

[0071] To illustrate the application of the technical solution of this embodiment, the following are examples of application scenarios: In step S111, during a normal closing operation, the system records the following data: Phase A current: 20A, phase B current: 21A, phase C current: 19A.

[0072] Phase A voltage: 400V, phase B voltage: 405V, phase C voltage: 395V.

[0073] Ambient temperature: 27°C.

[0074] Switch status: closed.

[0075] In step S112, the event model has been trained and can identify the following features: Normal closing: the current rises steadily, there is no obvious voltage fluctuation, and the ambient temperature is normal.

[0076] Overload tripping: the current rises rapidly and exceeds the threshold, the voltage fluctuates slightly, and the ambient temperature rises.

[0077] Short circuit tripping: current rises sharply, voltage drops sharply, and ambient temperature rises rapidly.

[0078] In step S113, the previous ambient temperature is 30°C, and the user issues a closing command.

[0079] The event model is calculated based on the ambient temperature and user operation instructions: The probability of normal closing is 85%; the probability of overload opening is 10%; and the probability of short-circuit opening is 5%.

[0080] In step S114, real-time monitoring displays: The current change rate of phase A is 0.5A / s, the current change rate of phase B is 0.6A / s, and the current change rate of phase C is 0.4A / s.

[0081] The voltage change rate of phase A is 0.1V / s, the voltage change rate of phase B is 0.15V / s, and the voltage change rate of phase C is 0.05V / s.

[0082] In step S115, the comprehensive analysis results show: The real-time current and voltage change rates are both within the normal range.

[0083] Combined with the probability calculated by the event model, the state is finally determined to be "normal closing".

[0084] The system outputs status information: "The intelligent circuit breaker successfully completed the closing operation and the status is normal." It should be understood that the serial numbers of the steps in the above embodiments do not imply a sequence of execution. The execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0085] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented: S1: After the intelligent circuit breaker is started, the microcontroller circuit sends a PWM waveform to the drive circuit to trigger the trip coil of the intelligent circuit breaker to perform a tripping action; S2: Based on the microcontroller circuit and the passive node feedback interface, the open position signal and the closed position signal from the intelligent circuit breaker body are received and processed in real time to monitor the current switch state of the intelligent circuit breaker; the microcontroller circuit receives the opening command and the closing command, and enters the corresponding processing flow based on the received command type; the opening command includes the remote opening command and the manual opening command; S3: According to the preset opening and closing logic judgment rules, the microcontroller circuit analyzes the received opening and closing instructions, and detects the alarm events and switch fault events generated by the intelligent circuit breaker: S31: For each opening instruction and closing instruction, the microcontroller circuit first reads the current switch state of the intelligent circuit breaker to determine whether the preset execution condition is met; S32: If the preset execution conditions are met, the corresponding opening or closing action is executed, and the latest switch status signal is obtained to confirm whether the operation is successful; S33: If the preset execution condition is not met or the operation fails, check whether there are abnormal influencing factors, and record the corresponding event results to obtain the final opening and closing event record results.

[0086] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application 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 many 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).

[0087] In one embodiment, in particular, according to an embodiment of the present invention, the process described above with reference to the flowchart can be implemented as a computer software program. When the computer program product runs on the intelligent circuit breaker system, the intelligent circuit breaker system executes a comprehensive judgment method for the opening and closing events of the intelligent circuit breaker; for example, an embodiment of the present invention includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network through a communication module, and / or installed from a removable medium. When the computer program is executed by a central processing unit (CPU), various functions defined in the present invention are executed.

[0088] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0089] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, it should be understood by those skilled in the art that the technical solutions described in the aforementioned embodiments may still be modified, or some of the features thereof may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A comprehensive judgment circuit for the opening and closing events of an intelligent circuit breaker, characterized in that: The intelligent circuit breaker includes an intelligent circuit breaker body and a circuit board, a microcontroller circuit and a drive circuit are embedded on the circuit board, and the microcontroller circuit is connected to the drive circuit through a control signal interface, and is used to send a PWM waveform to trigger a trip coil of the intelligent circuit breaker to perform a tripping action of the intelligent circuit breaker; The microcontroller circuit is connected to a passive node feedback interface for feeding back the circuit breaker open position signal and the circuit breaker closed position signal; The microcontroller circuit is provided with a switch-on and switch-off logic judgment rule. In the switch-on and switch-off logic judgment rule, the microcontroller circuit judges the switch-on and switch-off events based on the received switch-on and switch-off instructions, and performs detection based on the alarm events and switch fault events generated by the intelligent circuit breaker to obtain the switch-on and switch-off event record results.

2. The comprehensive judgment circuit for opening and closing events based on intelligent circuit breaker according to claim 1 is characterized in that: The microcontroller circuit includes a main control chip, and the drive circuit includes a drive switch tube; the drive switch tube is connected between the drive end of the main control chip and the control signal interface; the program burning end of the main control chip is connected to a debugging interface, and the main control chip is also provided with an input side temperature detection interface and an output side temperature detection interface for connecting a temperature sensor.

3. The comprehensive judgment circuit for opening and closing events based on intelligent circuit breaker according to claim 2 is characterized in that: The driving switch tube comprises a triode, the base of the triode is connected to the main control chip, the emitter of the triode is grounded, and the collector of the triode is connected to the control signal interface; the model of the main control chip is HC32F460JETA.

4. The comprehensive judgment circuit for opening and closing events based on intelligent circuit breaker according to claim 1 is characterized in that: The opening command includes a remote opening command and a manual opening command; The opening and closing logic judgment rules include: When receiving a remote opening command, the switch state of the intelligent circuit breaker is read to determine whether the switch of the intelligent circuit breaker is in the opening position and the power-saving state. If the switch is in the closing state and not in the power-saving state, the opening action is performed, and a switch state signal is obtained. Based on the switch state signal, it is determined whether the opening is successfully performed, and a first opening and closing event record result is obtained; if the switch is not in the closing state, it is determined in sequence whether a tripping event is generated, whether it is in the maintenance state, and whether it is a manual opening, and a second opening and closing event record result is output, and the second opening and closing event record result includes a tripping event, an event reporting an under-maintenance event, and an event reporting a switch malfunction event; When receiving a local manual opening command or executing an opening action, obtaining an opening pulse signal, reading a switch status signal, and determining whether the opening is successful, obtaining a third opening and closing event record result; Based on the first opening and closing event recording result, the second opening and closing event recording result and the third opening and closing event recording result, a final opening and closing event recording result is obtained.

5. A comprehensive judgment method for opening and closing events based on intelligent circuit breakers, characterized in that: Applied to the comprehensive judgment circuit of opening and closing events based on the intelligent circuit breaker according to any one of claims 1 to 4, the method comprises: After the intelligent circuit breaker is started, the microcontroller circuit sends a PWM waveform to the drive circuit to trigger the trip coil of the intelligent circuit breaker to perform a tripping action; Based on the microcontroller circuit and the passive node feedback interface, the open position signal and the closed position signal from the intelligent circuit breaker body are received and processed in real time to monitor the current switch state of the intelligent circuit breaker; the microcontroller circuit receives the opening command and the closing command, and enters the corresponding processing flow based on the received command type; the opening command includes a remote opening command and a manual opening command; According to the preset opening and closing logic judgment rules, the microcontroller circuit analyzes the received opening and closing instructions, and detects the alarm events and switch fault events generated by the intelligent circuit breaker: For each opening and closing command, the microcontroller circuit first reads the current switch state of the intelligent circuit breaker to determine whether the preset execution conditions are met; If the preset execution conditions are met, the corresponding opening or closing action is performed, and the latest switch status signal is obtained to confirm whether the operation is successful; If the preset execution condition is not met or the operation fails, check whether there are abnormal influencing factors, and record the corresponding event results to obtain the final opening and closing event record results.

6. The comprehensive judgment method for opening and closing events based on intelligent circuit breaker according to claim 5 is characterized in that: The intelligent circuit breaker is connected to a three-phase current sensor and a three-phase voltage sensor; the microcontroller circuit is respectively provided with a phase difference current threshold signal and a phase maximum current threshold signal based on the three-phase detection current signal of the three-phase current sensor; the microcontroller circuit is respectively provided with a phase difference voltage threshold signal and a phase maximum voltage threshold signal based on the three-phase voltage detection signal of the three-phase voltage sensor; the method further includes: Calculate and obtain the phase current difference between the A-phase current detection signal, the B-phase current detection signal, and the C-phase current detection signal to obtain a phase current difference signal; compare the phase current difference signal with the phase difference current threshold signal, and output a current abnormality prompt signal when the phase current difference signal is greater than the phase difference current threshold signal; and compare the A-phase current detection signal, the B-phase current detection signal, and the C-phase current detection signal with the phase maximum current threshold signal one by one to obtain corresponding current comparison results, and trigger a current abnormality prompt instruction when the current comparison result meets the preset current warning condition; and / or, Calculate and obtain the phase voltage difference between the A phase voltage detection signal, the B phase voltage detection signal and the C phase voltage detection signal to obtain a phase voltage difference signal; compare the phase voltage difference signal with a phase difference voltage threshold signal, output a voltage abnormality warning signal when the phase voltage difference signal is greater than the phase difference voltage threshold signal, and compare the A phase voltage detection signal, the B phase voltage detection signal and the C phase voltage detection signal with the phase highest voltage threshold signal one by one to obtain corresponding voltage comparison results, and trigger a voltage abnormality warning instruction when the voltage comparison result meets a preset voltage warning condition.

7. The comprehensive judgment method for opening and closing events based on intelligent circuit breaker according to claim 6 is characterized in that: The intelligent circuit breaker is also connected to an ambient temperature sensor, and the method further includes: The microcontroller circuit compares a preset reference threshold signal with a real-time detected ambient temperature detection signal to obtain a temperature threshold difference; Comparing the temperature threshold difference with a preset first critical difference and a preset second critical difference; When the temperature threshold difference is greater than or equal to the preset first critical difference and less than the second critical difference, adjusting the temperature threshold signal by increasing or decreasing it based on the first preset temperature adjustment ratio; When the temperature threshold difference is greater than the second critical difference, adjusting the temperature threshold signal by increasing or decreasing it based on a second preset temperature adjustment ratio; When the temperature threshold signal is adjusted to be enlarged or reduced, a temperature threshold adjustment prompt instruction is triggered.

8. The comprehensive judgment method for opening and closing events based on intelligent circuit breaker according to claim 6 is characterized in that: The method further comprises: Collecting multiple sensor data stream information related to each opening and closing event in the intelligent circuit breaker; Generate an event model according to each opening and closing event type, wherein the event model is used to analyze different types of opening and closing events and corresponding sensor data characteristics; Acquire the ambient temperature detection signal and user operation instruction information of the intelligent circuit breaker, input the ambient temperature detection signal and user operation instruction information into the event model, and calculate the occurrence probability of the opening and closing events; Obtain the real-time current change rate and real-time voltage change rate of the intelligent circuit breaker; The real-time current change rate, the real-time voltage change rate and the occurrence probability of the opening and closing events are input into the event model to determine the final circuit breaker state determination information.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by the processor, the steps of the comprehensive judgment method for opening and closing events based on the intelligent circuit breaker are implemented as claimed in any one of claims 5 to 8.

10. A computer program product, characterized in that When the computer program product is run on an intelligent circuit breaker system, the intelligent circuit breaker system executes the comprehensive judgment method for opening and closing events based on an intelligent circuit breaker as claimed in any one of claims 5 to 8.

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