A circuit breaker

Abstract

The application provides a circuit breaker, comprising a data monitoring mechanism, an analysis processing mechanism and an execution mechanism which are connected with each other, wherein the data monitoring mechanism is used for collecting residual current, temperature data and humidity data of equipment; the analysis processing mechanism is used for extracting and analyzing the data collected by the data monitoring mechanism to obtain an analysis result of equipment leakage analysis; and the execution mechanism is used for triggering early warning information of equipment leakage according to the analysis result and performing a tripping and power-off operation on the equipment. The circuit breaker can improve the accuracy and timeliness of leakage adaptive protection.

Description

Technical Field

[0001] This application relates to the field of circuit breaker technology, and specifically to a circuit breaker. Background Technology

[0002] Existing adaptive leakage current protection devices mainly adjust the protection level by measuring the magnitude and duration of the residual current. For example, lowering the protection level requires the residual current to be less than a certain percentage of the current level value for a certain period of time, while raising the protection level requires the residual current to be greater than a certain percentage and less than another percentage for a certain period of time.

[0003] However, this adjustment method relies on fixed thresholds and static judgments, without considering the differences in power environment and equipment type. Its level adjustment and protection parameter settings are relatively fixed and cannot be dynamically optimized according to the actual power environment and equipment needs. It is easy to misjudge short-term current fluctuations as leakage faults. Utility Model Content

[0004] This application provides a circuit breaker that improves the accuracy and timeliness of adaptive leakage protection.

[0005] This application provides a circuit breaker, comprising a data monitoring unit, an analysis and processing unit, and an execution unit interconnected thereto, wherein:

[0006] The data monitoring mechanism is used to collect residual current, temperature data and humidity data of the equipment;

[0007] The analysis and processing mechanism is used to extract and analyze the data collected by the data detection mechanism to obtain the analysis results of the equipment leakage current analysis;

[0008] The actuator is used to trigger an early warning message for leakage current in the device based on the analysis results, and to perform a trip power-off operation on the device.

[0009] Optionally, the data monitoring agency includes:

[0010] An environmental sampling component is used to monitor the temperature and humidity data of the device;

[0011] A protective current transformer is used to collect the phase current in the three-phase circuit of the device.

[0012] A leakage current transformer is used to detect the residual current signal in the three-phase circuit.

[0013] Optionally, the environmental sampling component transmits the collected temperature and humidity data to the analysis and processing unit, and the environmental sampling component includes:

[0014] A temperature sampler is used to monitor the ambient temperature of the environment in which the device is located in real time and obtain the temperature data;

[0015] A humidity sampler is used to monitor the ambient humidity of the environment in which the device is located in real time and obtain the humidity data.

[0016] Optionally, the analysis and processing unit includes:

[0017] The data acquisition unit is used to receive the temperature data and humidity data sent by the environmental sampling component, the phase current signals sent by the protective current transformer, and the residual current signal sent by the leakage current transformer.

[0018] The processor is used to receive and process the data collected by the collector to obtain denoised data.

[0019] A detector is used to receive and process the denoised data and determine whether the device is leaking electricity.

[0020] An output device is used to receive the judgment result, output a control signal based on the judgment result, and send the control signal to the actuator.

[0021] Optionally, the actuator is connected to the output device, and the actuator includes:

[0022] The warning device is used to issue an audible and visual alarm signal when the control signal indicates that the device has a leakage fault;

[0023] A trip unit is used to cut off the power supply to the faulty circuit of the device when the control signal indicates that the device has a leakage fault and the duration is longer than a preset duration.

[0024] Optionally, the processor is further configured to acquire a reference current and correct the remaining current based on the reference current to obtain a corrected remaining current.

[0025] Optionally, the judge is also used to extract and analyze waveform features of the denoised data, and determine the judgment result by combining ambient temperature and humidity parameters through a preset artificial intelligence model.

[0026] Optionally, the judge is further configured to generate a first judgment result when the reference current increases;

[0027] When the nature of the residual current is a leakage fault current, and the duration of the leakage fault current is greater than the preset duration, a second determination result is generated.

[0028] Optionally, the output device is further configured to output a first control signal for controlling the warning device based on the first judgment result;

[0029] Based on the second judgment result, a second control signal is output to control the trip unit.

[0030] Optionally, the processor is further configured to process the residual current signal using a digital filtering algorithm to remove noise and interference signals from the residual current signal and obtain the denoised data.

[0031] The circuit breaker of this application monitors the ambient temperature, humidity and other parameters of the equipment in real time through a data monitoring agency, and performs intelligent analysis and processing of the residual current of the equipment in combination with these parameters through an analysis and processing agency. This enables it to accurately distinguish whether the nature of the residual current of the equipment is normal leakage current or leakage fault current, avoiding the shortcomings of traditional devices that are prone to misjudgment of leakage faults due to fixed thresholds and static judgments. This improves the accuracy and timeliness of leakage protection. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the overall structure of the circuit breaker provided in the embodiments of this application;

[0034] The attached figures are labeled as follows:

[0035] 10. Data monitoring unit; 101. Environmental sampling component; 1011. Temperature sampler; 1012. Humidity sampler; 102. Protective current transformer; 103. Leakage current transformer; 20. Analysis and processing unit; 201. Data acquisition unit; 202. Processor; 203. Analyzer; 204. Output unit; 30. Actuator; 301. Trip unit; 302. Early warning device. Detailed Implementation

[0036] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0040] Existing adaptive leakage current protection devices primarily adjust the protection level based on the magnitude and duration of the residual current. For example, lowering the level requires the actual residual current to be less than a certain percentage (e.g., 0.5 times) of the current level value for a certain duration (e.g., 2 minutes); raising the level requires the actual residual current to be greater than a certain percentage (e.g., 0.5 times) of the current level value but less than another percentage (e.g., 0.75 times) for a certain duration (e.g., 1 minute). This adjustment method mainly relies on the static threshold and fixed time of the residual current. While it can achieve leakage current protection to some extent, its judgment logic is relatively simple and does not fully consider the influence of factors such as the electrical environment and equipment type.

[0041] However, existing residual current devices (RCDs) have significant shortcomings in practical applications. First, their range adjustments and RCD parameter settings are relatively fixed, making dynamic optimization impossible based on actual power conditions and equipment requirements. When facing complex and changing power usage, especially during the operation of certain specialized equipment, residual current may fluctuate significantly in a short period, but this does not necessarily indicate a genuine leakage risk. Existing devices are prone to misjudging this, leading to unnecessary power outages or protection failures. Second, current technology is insufficient in distinguishing between normal leakage current and leakage fault current, making it difficult to adapt to diverse equipment types and complex power environments, and unable to respond to leakage faults promptly and accurately. Furthermore, existing devices, in terms of primary or secondary residual current protection in low-voltage distribution areas, do not fully consider the differences and coordination requirements with terminal RCDs, resulting in deficiencies in protection range, selective action time, communication monitoring, and coordination with terminal protection, making it difficult to ensure the safe and stable operation of the power system.

[0042] This application provides a circuit breaker, which will be described in detail below.

[0043] Please see Figure 1 , Figure 1 This is a schematic diagram of the overall structure of the circuit breaker provided in an embodiment of this application. Figure 1 As shown, the circuit breaker of this application may include a data monitoring unit 10, an analysis and processing unit 20, and an execution unit 30 connected to each other, wherein:

[0044] Data monitoring unit 10 is used to collect residual current, temperature data and humidity data of the equipment;

[0045] The analysis and processing unit 20 is used to extract and analyze the data collected by the data detection unit to obtain the analysis results of equipment leakage current analysis;

[0046] The actuator 30 is used to trigger an early warning message for equipment leakage based on the analysis results and to perform a trip power-off operation on the equipment.

[0047] Specifically, the data monitoring agency 10 can be used to collect real-time operating data and environmental data of the equipment, including residual current, temperature data and humidity data.

[0048] In some embodiments, the data monitoring agency 10 may include:

[0049] Environmental sampling component 101 is used to monitor the temperature and humidity data of the equipment;

[0050] The current transformer 102 is used to collect the phase current in the three-phase circuit of the equipment.

[0051] The leakage current transformer 103 is used to detect the residual current signal in a three-phase circuit.

[0052] Specifically, the data monitoring unit 10 is an important component of the circuit breaker, responsible for collecting equipment operation data and environmental data to provide basic data support for subsequent intelligent analysis and protection execution.

[0053] In some embodiments, the environmental sampling component 101 can be used to monitor temperature and humidity data of the equipment operating environment, and transmit the collected temperature and humidity data to the analysis and processing unit 20. The environmental sampling component 101 includes:

[0054] Temperature sampler 1011 is used to monitor the ambient temperature of the environment where the equipment is located in real time and obtain temperature data;

[0055] The humidity sampler 1012 is used to monitor the ambient humidity of the environment where the equipment is located in real time and obtain humidity data.

[0056] Ambient temperature and humidity are important factors affecting the insulation performance of electrical equipment. By monitoring these parameters, we can better understand the operating status of the equipment and, in conjunction with residual current data, determine whether there is a risk of leakage.

[0057] In some embodiments, the protective current transformer 102 can be used to collect the phase current of each phase in the three-phase circuit of the device. The protective current transformer 102 can monitor the changes in the phase current of each phase in the three-phase circuit in real time, capture minute fluctuations in the current, and provide accurate data support for subsequent analysis.

[0058] In some embodiments, the residual current transformer 103 can be used to detect residual current. The residual current transformer 103 can detect residual current to help determine whether there is a leakage fault, especially when leakage occurs in a three-phase circuit, the residual current will increase significantly.

[0059] It is understood that the environmental sampling component 101, the protective current transformer 102, and the leakage current transformer 103 work together to collect data on the equipment's temperature, humidity, phase current, and residual current. This data is transmitted to the analysis and processing unit 20 for further analysis and judgment. Through comprehensive monitoring of multiple parameters, the data monitoring unit 10 can provide more comprehensive information on the equipment's operating status.

[0060] The data monitoring unit 10 of this application, through the coordinated operation of the environmental sampling component 101, the protective current transformer 102, and the leakage current transformer 103, achieves comprehensive monitoring of equipment operating status and environmental parameters. This multi-parameter monitoring method can more comprehensively reflect the equipment's operating status, providing reliable data support for subsequent intelligent analysis and protection execution, and significantly improving the accuracy and adaptability of leakage protection. By collecting multiple parameters through the data monitoring unit 10, comprehensive equipment operating status and environmental information can be provided, offering data support for subsequent intelligent analysis.

[0061] Specifically, the analysis and processing unit 20 can extract, analyze and process the data collected by the data monitoring unit 10 to determine whether the equipment has a leakage fault.

[0062] In some embodiments, the analysis and processing unit 20 may include:

[0063] The data acquisition unit 201 is used to receive temperature and humidity data sent by the environmental sampling component 101, phase current signals sent by the protection current transformer 102, and residual current sent by the leakage current transformer 103.

[0064] The processor 202 is used to receive and process the data collected by the collector 201 to obtain denoised data;

[0065] The detector 203 is used to receive and process the noise-reduced data to determine whether the device is leaking current.

[0066] The output device 204 is used to receive the judgment result, output a control signal based on the judgment result, and send the control signal to the actuator 30.

[0067] Specifically, the analysis and processing mechanism 20 is the core part of the circuit breaker. It is responsible for processing, analyzing and judging the data collected by the data monitoring mechanism 10, and finally outputting control signals to trigger protection operations.

[0068] In some embodiments, the data acquisition unit 201 can be used to receive various types of data sent by the data monitoring unit 10, such as temperature and humidity data sent by the environmental sampling component 101, phase current signals sent by the protective current transformer 102, and residual current sent by the leakage current transformer 103. The data acquisition unit 201 can act as a data relay station, integrating data from different sensors and transmitting it to the processor 202 to ensure data integrity and real-time performance.

[0069] In some embodiments, the processor 202 can receive data transmitted by the data acquisition unit 201 and process the data to obtain denoised data. Digital filtering algorithms can be used to process the residual current signal and residual current, removing noise and interference signals to improve data quality. Temperature and humidity data can be standardized to ensure consistent data formats. Through denoising, the processor 202 can provide cleaner and more accurate data, laying the foundation for subsequent judgment and analysis.

[0070] In some embodiments, the detector 203 can receive denoised data processed by the processor 202 and determine whether the device has a leakage fault based on this data. Specifically, waveform features can be extracted from the residual current signal, and its amplitude, rate of change, harmonic content, and other characteristics can be analyzed. Combined with ambient temperature and humidity data, an artificial intelligence model can be used for comprehensive analysis to determine whether the residual current is a normal leakage current or a leakage fault current. For example, when the residual current amplitude increases sharply and the harmonic content increases significantly, the detector 203 will determine it to be a leakage fault current. Through intelligent analysis, the detector 203 can accurately distinguish between normal leakage current and leakage fault current, avoiding misjudgment and missed judgment.

[0071] In some embodiments, the output device 204 can receive the judgment result from the judgment device 203 and output a control signal based on the judgment result, sending the control signal to the actuator 30. If the judgment result is a leakage fault current, the output device 204 will send a control signal to trigger the tripping power-off operation and audible and visual alarm of the actuator 30. If the judgment result is an abnormal increase in normal leakage current, the output device 204 will send a warning signal to remind maintenance personnel to perform inspection and maintenance. The output device 204 acts as a bridge between the analysis and processing device 20 and the actuator 30, ensuring that the judgment result can be promptly converted into a protection operation.

[0072] In some embodiments, the analysis and processing unit 20 can first receive data from the environmental sampling component 101, the protective current transformer 102, and the leakage current transformer 103 via the acquisition unit 201. Then, the processor 202 performs noise reduction processing on the received data to obtain high-quality denoised data. Next, the judge 203 performs feature extraction and intelligent analysis on the denoised data to determine whether a leakage current fault exists in the equipment. Finally, the output unit 204 generates a control signal based on the judgment result and sends it to the actuator 30 to trigger the corresponding protection operation.

[0073] The analysis and processing unit 20, through the coordinated operation of the data acquisition unit 201, processor 202, judgment unit 203, and output unit 204, achieves intelligent analysis and accurate judgment of equipment operation data. Through noise reduction, feature extraction, and artificial intelligence model analysis, the analysis and processing unit 20 can accurately distinguish between normal leakage current and leakage fault current, and output corresponding control signals to ensure that the circuit breaker can execute protection operations in a timely and accurate manner, significantly improving the reliability and safety of leakage protection. By intelligently analyzing various types of parameters and data related to the equipment, the analysis and processing unit 20 can accurately distinguish between normal leakage current and leakage fault current, avoiding misjudgments and missed judgments, and improving the accuracy of leakage protection.

[0074] The actuator 30 can trigger a corresponding protection operation based on the analysis results obtained by the analysis and processing unit 20. In some embodiments, the actuator 30 can be connected to the output unit 204, and the actuator 30 may include:

[0075] The warning device 302 is used to issue an audible and visual alarm signal when the control signal indicates that there is a leakage fault in the equipment;

[0076] The trip unit 301 is used to disconnect the power supply to the faulty circuit of the equipment when the control signal indicates that the equipment has a leakage fault and the duration is longer than a preset duration.

[0077] Specifically, the actuator 30 is the final execution part of the circuit breaker, responsible for performing corresponding protection operations based on the control signals output by the analysis and processing unit 20. The actuator 30 is connected to the output unit 204, receives control signals from the output unit 204, and triggers different protection actions according to the signal content.

[0078] In some embodiments, when a control signal indicates a leakage current fault in the device, the warning device 302 can issue an audible and visual alarm signal. The warning device 302 can receive control signals from the output device 204 and determine whether the signal content indicates a leakage current fault. If a leakage current fault is detected, the warning device 302 immediately triggers the audible and visual alarm device, issuing an alarm signal to alert relevant personnel. The warning device 302 can promptly issue an alarm when a leakage current fault occurs, helping maintenance personnel quickly locate the problem and prevent the accident from escalating further.

[0079] In some embodiments, when a control signal indicates a leakage fault in the device and the fault duration exceeds a preset duration, the trip unit 301 will disconnect the power supply to the faulty circuit. The trip unit 301 can receive control signals from the output unit 204, determine whether the signal content indicates a leakage fault, and detect the duration of the fault. If the leakage fault duration exceeds a preset duration (e.g., 1 second or 2 seconds), the trip unit 301 will immediately activate and disconnect the power supply to the faulty circuit. The trip unit 301 is a core protection component of the circuit breaker, capable of quickly disconnecting the power supply after confirming a leakage fault, preventing serious consequences such as electrical fires and electric shocks.

[0080] Specifically, the actuator 30 can first receive control signals from the analysis and processing unit 20 via the output unit 204. If the control signal indicates a leakage fault in the equipment, the warning device 302 will immediately issue an audible and visual alarm signal. If the leakage fault persists for more than a preset duration, the trip unit 301 will cut off the power supply to the faulty circuit. Therefore, the warning device 302 can alert relevant personnel through audible and visual alarms, and the trip unit 301 can prevent the accident from escalating by cutting off the power supply.

[0081] In summary, the actuator 30 of this application, through the coordinated operation of the early warning device 302 and the trip unit 301, achieves rapid response and precise protection against leakage current faults. When a leakage current fault occurs in the equipment, the early warning device 302 can promptly issue an alarm to alert relevant personnel; while the trip unit 301 can quickly cut off the power supply if the fault duration exceeds a preset value, preventing the accident from escalating further. This dual protection mechanism significantly improves the safety and reliability of the power system, ensuring the safety of equipment and personnel. Through early warning and tripping operations, leakage current faults are responded to in a timely manner, ensuring the safety of equipment and personnel.

[0082] The data monitoring unit 10 collects data such as residual current, temperature, and humidity of the equipment in real time and transmits the data to the analysis and processing unit 20. The analysis and processing unit 20 filters, extracts features, and performs intelligent analysis on the collected data to determine if a leakage fault exists. If a leakage fault is detected, the actuator 30 immediately triggers the trip unit 301 to cut off the power supply and issues an alarm signal through the warning device 302. If the leakage current is abnormally increased, the actuator 30 issues a warning message to remind maintenance personnel to conduct inspection and maintenance.

[0083] Through the collaborative work of the data monitoring unit 10, the analysis and processing unit 20, and the execution unit 30, this solution achieves comprehensive monitoring, intelligent analysis, and precise protection of electrical equipment. Compared with traditional leakage protection devices, this solution can more accurately identify leakage faults, adapt to complex and ever-changing power environments, and significantly improve the safety and reliability of the power system.

[0084] In some embodiments, the processor 202 can also be used to acquire a reference current and correct the remaining current based on the reference current to obtain a corrected remaining current. Specifically, the processor 202 is not only used to denoise the acquired data, but also to acquire a reference current and correct the remaining current based on the reference current to obtain a corrected remaining current.

[0085] The reference current refers to the normal leakage current generated by the equipment under normal operating conditions. The processor 202 obtains the reference current through historical data or preset values. The processor 202 can compare the actual measured residual current with the reference current to calculate the corrected residual current. The corrected residual current eliminates the influence of normal leakage current and only reflects the current of possible leakage faults. By correcting the residual current, the processor 202 can more accurately determine whether a leakage fault exists, avoiding misjudgments caused by fluctuations in normal leakage current, thereby improving the accuracy and reliability of leakage protection.

[0086] In some embodiments, the judge 203 can also be used to extract and analyze waveform features from the denoised data, and determine the judgment result by combining ambient temperature and humidity parameters through a preset artificial intelligence model.

[0087] Specifically, the judge 203 not only receives the denoised data from the processor 202, but also extracts and analyzes waveform features from this data. Combining this with ambient temperature and humidity parameters, it determines the final judgment result using a pre-set artificial intelligence model. The judge 203 can perform waveform analysis on the denoised residual current signal, extracting key features such as current amplitude, rate of change, and harmonic content to identify abnormal current fluctuations. The judge 203 can combine the extracted waveform features with ambient temperature and humidity parameters to comprehensively analyze the equipment's operating status. For example, high temperature and high humidity environments may lead to a decrease in insulation performance, thereby affecting changes in the residual current.

[0088] In some embodiments, the detector 203 can utilize a preset artificial intelligence model to determine whether the residual current is a normal leakage current or a leakage fault current based on waveform characteristics and environmental parameters. For example, when the residual current amplitude increases sharply and the harmonic content increases significantly, the model will determine it as a leakage fault. The detector 203 can send the final judgment result to the output unit 204 to trigger the corresponding protection operation (such as warning or tripping power off). In this way, the detector 203 can accurately distinguish between normal leakage current and leakage fault current, avoiding misjudgment and missed judgment, and significantly improving the accuracy and reliability of leakage protection.

[0089] In some embodiments, the judge 203 can also be used to generate a first judgment result when the reference current increases, and generate a second judgment result when the nature of the residual current is a leakage fault current and the duration of the leakage fault current is greater than a preset duration.

[0090] Specifically, when the reference current (normal leakage current) increases, the detector 203 generates a first judgment result. This indicates that the normal leakage current of the equipment has increased, possibly due to factors such as changes in ambient temperature and humidity or equipment aging. At this time, the detector 203 will issue a warning signal to remind maintenance personnel to conduct inspection and maintenance, but will not trigger a trip power-off operation. When the nature of the residual current is determined to be a leakage fault current, and the duration of the leakage fault current exceeds a preset duration (e.g., 1 second or 2 seconds), the detector 203 generates a second judgment result. This indicates that the equipment has a continuous leakage fault, which may cause an electrical fire or electric shock accident. At this time, the detector 203 will trigger a trip power-off operation and issue an audible and visual alarm signal to cut off the power supply to the faulty circuit and prevent the accident from escalating.

[0091] Based on these two judgment results, the judge 203 can distinguish between normal leakage current increase and actual leakage fault, ensuring that appropriate protective measures are taken when necessary, thus avoiding misjudgment and protecting the safety of equipment and personnel.

[0092] In some embodiments, the output device 204 may also be used to output a first control signal for controlling the warning device 302 according to a first judgment result, and to output a second control signal for controlling the trip unit 301 according to a second judgment result.

[0093] Specifically, according to this scheme, the output device 204 can not only receive the judgment result of the judgment device 203, but also output corresponding control signals according to different judgment results to trigger the protection operation of the actuator 30. When the judgment device 203 generates the first judgment result (i.e., the reference current increases, indicating that the normal leakage current increases), the output device 204 will output the first control signal. This signal is used to control the warning device 302, triggering an audible and visual alarm to remind maintenance personnel to perform inspection and maintenance, but will not cut off the power supply. Correspondingly, when the judgment device 203 generates the second judgment result (i.e., the residual current is the leakage fault current and the duration exceeds the preset duration), the output device 204 will output the second control signal. This signal is used to control the trip device 301, triggering the trip power-off operation to cut off the power supply to the faulty line, and simultaneously triggering an audible and visual alarm to prevent the accident from escalating.

[0094] By outputting different control signals, the output device 204 can accurately execute the corresponding protection operation according to the judgment result, which not only avoids power outages caused by misjudgment, but also cuts off the power supply in time when a real leakage fault occurs, ensuring the safety of equipment and personnel.

[0095] In some embodiments, the processor 202 can also be used to process the residual current signal using a digital filtering algorithm to remove noise and interference signals from the residual current signal and obtain denoised data.

[0096] Specifically, processor 202 not only acquires the reference current and corrects the residual current, but also processes the residual current signal using digital filtering algorithms to remove noise and interference signals, thereby obtaining denoised data. Processor 202 can use digital filtering algorithms (such as low-pass filtering, band-pass filtering, etc.) to process the residual current signal, filtering out high-frequency noise and interference signals. This noise and interference may originate from electromagnetic interference, equipment vibration, or other external factors.

[0097] After filtering, noise and interference in the residual current signal can be effectively removed, resulting in clean, denoised data. This denoised data more accurately reflects the actual residual current status of the equipment. The denoised data provides high-quality foundational data for subsequent waveform feature extraction and intelligent analysis, ensuring that the detector 203 can more accurately determine the nature of the residual current (normal leakage current or leakage fault current), thereby improving the accuracy and reliability of leakage protection. Through digital filtering algorithms, the processor 202 significantly improves data quality, laying a solid foundation for the intelligent analysis and accurate judgment of the entire leakage protection system.

[0098] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the detailed descriptions of other embodiments above, which will not be repeated here.

[0099] The basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0100] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0101] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments of the utility model, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure does not imply that the subject matter of the present application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0102] In some embodiments, numbers describing the quantity of components and attributes are used. It should be understood that such numbers used in the description of embodiments are modified in some examples with the terms "approximately," "approximately," or "generally." Unless otherwise stated, "approximately," "approximately," or "generally" indicates that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may be changed depending on the characteristics required by individual embodiments. In some embodiments, numerical parameters should take into account specified significant digits and adopt a general digit reservation method. Although the numerical ranges and parameters used to confirm their breadth of range in some embodiments of this application are approximate values, in specific embodiments, such values ​​are set as precisely as feasible.

[0103] For each patent, patent application, patent application publication, and other material such as articles, books, specifications, publications, and documents referenced in this application, the entire contents of that patent application are incorporated herein by reference, except for historical application documents that are inconsistent with or conflict with the content of this application, and documents that limit the broadest scope of the claims of this application (currently or subsequently appended to this application). It should be noted that if there are any inconsistencies or conflicts between the descriptions, definitions, and / or terminology used in the supplementary materials of this application and the content of this application, the descriptions, definitions, and / or terminology used in this application shall prevail.

[0104] The circuit breaker provided in the embodiments of this application has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand this utility model and its core ideas. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A circuit breaker characterized by, This includes interconnected data monitoring, analysis and processing, and implementation agencies, among which: The data monitoring mechanism is used to collect residual current, temperature data and humidity data of the equipment; The analysis and processing mechanism is used to extract and analyze the data collected by the data detection mechanism to obtain the analysis results of the equipment leakage current analysis; The actuator is used to trigger an early warning message for leakage current in the device based on the analysis results, and to perform a trip power-off operation on the device.

2. The circuit breaker of claim 1, wherein, The data monitoring agencies include: An environmental sampling component is used to monitor the temperature and humidity data of the device; A protective current transformer is used to collect the phase current in the three-phase circuit of the device. A leakage current transformer is used to detect the residual current signal in the three-phase circuit.

3. The circuit breaker of claim 2, wherein, The environmental sampling component transmits the collected temperature and humidity data to the analysis and processing unit. The environmental sampling component includes: A temperature sampler is used to monitor the ambient temperature of the environment in which the device is located in real time and obtain the temperature data; A humidity sampler is used to monitor the ambient humidity of the environment in which the device is located in real time and obtain the humidity data.

4. The circuit breaker of claim 2, wherein, The analysis and processing unit includes: The data acquisition unit is used to receive the temperature data and humidity data sent by the environmental sampling component, the phase current signals sent by the protective current transformer, and the residual current signal sent by the leakage current transformer. The processor is used to receive and process the data collected by the collector to obtain denoised data. A detector is used to receive and process the denoised data and determine whether the device is leaking electricity. An output device is used to receive the judgment result, output a control signal based on the judgment result, and send the control signal to the actuator.

5. The circuit breaker of claim 4, wherein, The actuator is connected to the output device, and the actuator includes: The warning device is used to issue an audible and visual alarm signal when the control signal indicates that the device has a leakage fault; A trip unit is used to cut off the power supply to the faulty circuit of the device when the control signal indicates that the device has a leakage fault and the duration is longer than a preset duration.

6. The circuit breaker of claim 5, wherein, The processor is also used to acquire a reference current and correct the remaining current based on the reference current to obtain a corrected remaining current.

7. The circuit breaker of claim 4, wherein, The judge is also used to extract and analyze waveform features of the denoised data, and determine the judgment result by combining ambient temperature and humidity parameters through a preset artificial intelligence model.

8. The circuit breaker of claim 6, wherein, The judge is also used to generate a first judgment result when the reference current increases; When the nature of the residual current is a leakage fault current, and the duration of the leakage fault current is greater than the preset duration, a second judgment result is generated.

9. The circuit breaker of claim 8, wherein, The output device is also used to output a first control signal for controlling the warning device based on the first judgment result; Based on the second judgment result, a second control signal is output to control the trip unit.

10. The circuit breaker of claim 4, wherein, The processor is further configured to process the residual current signal using a digital filtering algorithm to remove noise and interference signals from the residual current signal, thereby obtaining the denoised data.

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