Circuit breaker operation state detection early warning method and system

Abstract

The invention belongs to the technical field of power systems, and more specifically relates to a circuit breaker operation state detection early warning method and system, and the method specifically comprises the steps: collecting the magnitude of current in a circuit containing a circuit breaker through a current sensor, generating a current signal, and carrying out the analysis of the current signal, and generating a corresponding analysis signal; the analytic signal comprises a first analytic sub-signal and a second analytic sub-signal, calculating a current increase quantity value through the first analytic sub-signal, and judging the relationship between the current increase quantity value and a set current increase threshold to determine whether to control the circuit system; the current abnormal value is calculated through the second analysis sub-signal, the relation between the current abnormal value and the set current abnormal threshold value is judged, whether the circuit system is controlled or not is determined, and equipment aging and faults caused by current abnormity or larger accidents caused by the faults can be effectively avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of power systems, and more specifically, relates to a circuit breaker operating status detection and early warning method and system. Background Art

[0002] As an important part of the infrastructure of modern society, the power system is widely used in industry, commerce, households and other fields, and undertakes important power supply tasks. In order to ensure the stable and safe operation of the power system, the circuit breaker, as one of the power protection devices, is responsible for automatically cutting off the fault current to prevent electrical equipment from being affected by overload, short circuit and other faults. However, during long-term operation, some hidden faults or abnormalities may occur in power equipment, especially circuit breakers and their related circuits, causing the circuit breaker to fail to operate as expected, thus affecting the safety and reliability of the entire power system.

[0003] At present, circuit breakers in power systems are mainly protected by traditional monitoring methods. Most circuit breaker protection systems determine whether there are abnormalities in the circuit by monitoring the disconnection signal of the control circuit, the working status of the relay, and the current limit value. These methods usually rely on the action of the circuit breaker itself, such as overcurrent protection and short-circuit protection to trigger the circuit breaking action.

[0004] Traditional methods rely more on fixed current value thresholds, such as rated current value, short-circuit current, etc. for monitoring, and protection is performed when the current approaches these thresholds. Traditional monitoring methods are often unable to accurately evaluate problems such as slight fluctuations and slow growth in current changes. At the same time, in traditional power protection systems, fault detection and response are usually more dependent on manual judgment, resulting in slow response to some sudden current abnormalities. Such delays may lead to serious consequences such as overheating, damage, and even fire of power equipment. Summary of the invention

[0005] In order to solve the deficiencies in the prior art, the present invention provides a circuit breaker operation status detection and early warning method and system, which can take timely control measures to avoid damage to equipment caused by continuous abnormal current, especially for power equipment that runs for a long time, and can effectively avoid equipment aging, failure or larger accidents caused by failure due to abnormal current.

[0006] The present invention adopts the following technical solution.

[0007] The present invention proposes a circuit breaker operation status detection and early warning method, comprising the following steps:

[0008] During the circuit operation period, the current sensor is used to collect the current in the circuit containing the circuit breaker. The current data is continuously collected to generate a current signal and analyzed to generate a corresponding analysis signal.

[0009] The analytical signal includes a first analytical sub-signal and a second analytical sub-signal, the current increase potential value is calculated by the first analytical sub-signal, and the relationship between the current increase potential value and the set current increase potential threshold is judged to determine whether to control the circuit system, if the current increase potential value exceeds the set current increase potential threshold, it indicates that the circuit system has an overload risk and needs to be controlled, then a first rate increase control signal is generated;

[0010] The current abnormality value is calculated by the second analytical sub-signal, and the relationship between the current abnormality value and the set current abnormality threshold is judged to determine whether to control the circuit system. If the current abnormality value exceeds the set current abnormality threshold, it indicates that there is a short circuit risk in the circuit system and control is required, then a second abnormal control signal is generated.

[0011] Preferably, the analysis signal includes a first analysis sub-signal and a second analysis sub-signal, and the acquisition process is:

[0012] The current sensor is used to collect the current value in the circuit containing the circuit breaker and obtain the rated current value of the circuit breaker, and the current difference value is calculated as the difference between the current value and the rated current value of the circuit breaker, and the current neighborhood entropy is the ratio of the current difference value to the rated current value of the circuit breaker;

[0013] Determine the corresponding relationship between the current neighborhood entropy and the current neighborhood boundary entropy;

[0014] If the current neighborhood entropy is less than or equal to the current neighborhood threshold entropy, the first analytical sub-signal is obtained accordingly;

[0015] If the current neighborhood entropy is greater than the current neighborhood threshold entropy, a second analytical sub-signal is obtained accordingly.

[0016] Preferably, the current potential increase value is:

[0017]

[0018] in, and is the preset weight parameter, LS is the discrete amplitude, and ZC is the increase rate overlap amplitude.

[0019] Determining the relationship between the current potential increase value and a set current potential increase threshold;

[0020] If the current increase value is greater than the set current increase threshold, it means that the current increase is abnormal and causes a circuit breaker, and the system will generate a linear increase signal to indicate that the current continues to increase;

[0021] If the current increase potential value is less than or equal to the set current increase potential threshold, it means that the current growth performance is normal, and the system generates a nonlinear increase potential signal, indicating that the current change is stable and does not need to be adjusted immediately.

[0022] Preferably, the current is monitored in real time until the current exceeds the normal operating value but does not meet the rated current value of the circuit breaker, and the time interval is marked as an over-limit period, and the over-limit period and the total circuit operation period are entropy processed to obtain an abnormal interval period ratio;

[0023] The sum of all currents in the over-limit period is taken and the average is taken to obtain the current mean in the over-limit period. The absolute value of the difference between the current mean in the over-limit period and the normal current value is taken to obtain the average current deviation. The average current deviation and the normal current value are entropy processed to obtain the current abnormality ratio.

[0024] The product value obtained by multiplying the abnormal interval time period ratio and the current abnormal ratio is the current abnormal value.

[0025] Comparing the abnormal current value with a set abnormal current threshold;

[0026] If the current abnormality value is greater than the set current abnormality threshold, it means that the current abnormality exceeds the set safety limit, and the system triggers the second abnormality control signal to take further protective measures;

[0027] If the current abnormality value is ≤ the set current abnormality threshold, it means that the current abnormality is within the safety limit. The system does not perform any operation and continues to monitor the current changes to ensure the normal operation of the equipment.

[0028] Preferably, a time interval to be analyzed is defined, the time interval starts when the current exceeds the normal current value, and the time interval ends when the current neighborhood entropy is less than or equal to the current neighborhood boundary entropy, forming the time interval to be analyzed;

[0029] The collected current values ​​and time within the time period to be analyzed are plotted in a two-dimensional coordinate axis coordinate system to generate a current trend dynamic curve. The two end points of the current trend dynamic curve, that is, the current values ​​at the start time point and the end time point of the time period to be analyzed, are connected into a straight line to form an increase rate auxiliary line. The increase rate auxiliary line is the baseline of the current change trend, which is used for subsequent comparison and judgment of whether the current growth exceeds the normal range.

[0030] Preferably, the current trend dynamic curve is compared with the rate-increasing auxiliary line to select overlapping and intersecting line segments, and the length of the overlapping and intersecting line segments is calculated, recorded as the overlapping length of the potential-increasing line segments, and the overlapping length of the potential-increasing line segments and the length of the rate-increasing auxiliary line are entropy calculated to obtain the rate-increasing overlapping amplitude ZC.

[0031] Preferably, the current trend dynamic curve is compared with the rate increase auxiliary line to obtain non-overlapping curve segments, the non-overlapping curve segments are grouped into multiple non-overlapping curve sub-segments, and the average of the sum of the vertical distances from the midpoints of all non-overlapping curve sub-segments to the rate increase auxiliary line is calculated in turn, recorded as the average error distance, the average error distance value and the length of the rate increase auxiliary line are entropy processed, and the result obtained is recorded as the discrete amplitude LS.

[0032] Preferably, the first rate-increasing control signal indicates that during the time period to be analyzed, if the current shows a linear increase, it is inferred that the current will reach the rated current value of the circuit breaker at some point in the future based on this trend, and compared with the end time point during the circuit operation period. If during the circuit operation period, it is inferred that the current will reach the rated current value of the circuit breaker at some point in the future, it indicates that there is a risk of circuit breaking in the circuit system and control is required.

[0033] Preferably, when the second abnormal control signal indicates that the current proximity entropy is greater than the current proximity threshold entropy, even if the circuit breaker analysis condition is not triggered, the system will still monitor the duration of the current anomaly and its abnormal amplitude in real time. If the analysis result shows that the continuous abnormal current causes damage to the circuit or equipment, the system will judge whether to take control measures based on this.

[0034] The present invention also proposes a circuit breaker operation status detection and early warning system, which runs the aforementioned circuit breaker operation status detection and early warning method, including:

[0035] The current acquisition module is used to collect the current in the electronic circuit containing the circuit breaker using a current sensor;

[0036] The signal analysis module is used to analyze the collected and generated current signal to generate a corresponding analysis signal, including a first analysis sub-signal unit and a second analysis sub-signal unit;

[0037] The first analytical sub-signal unit is used to calculate the current potential value using the first analytical sub-signal,

[0038] The first analytical sub-signal unit is used to calculate the current abnormality value using the second analytical sub-signal,

[0039] The first determination module is used to determine the relationship between the current increase potential value and a set current increase potential threshold;

[0040] The second identification module is used to identify the relationship between the abnormal current value and a set abnormal current threshold.

[0041] The beneficial effect of the present invention is that, compared with the prior art, through the generation and use of the first analysis sub-signal and the second analysis sub-signal, the current can be monitored and regulated more accurately, which can not only improve the use efficiency of the power equipment, but also extend the service life of the equipment. By dynamically monitoring and evaluating the current, errors or delays in manual operations are reduced, and the management accuracy of the power grid is improved; by real-time monitoring and predicting the changing trend of the current, potential current abnormality problems can be discovered in time to prevent the current from exceeding the rated range of the equipment, avoid accidents such as overload, equipment damage or electrical fire, and ensure the safety and stability of the power system; when the current abnormality persists, especially before the current reaches the rated current value of the circuit breaker, the second abnormal control signal can take control measures in time through the analysis of the duration and deviation of the current abnormality, so as to avoid damage to the equipment caused by the continuous abnormal current, especially for power equipment that has been running for a long time, it can effectively avoid equipment aging, failure or greater accidents caused by failure due to current abnormality. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 The present invention is a flow chart of a circuit breaker operation status detection and early warning method. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The embodiments described in this application are only part of the embodiments of the present invention, not all of them. Based on the spirit of the present invention, other embodiments obtained by ordinary technicians in this field without creative work are all within the scope of protection of the present invention.

[0044] like Figure 1 As shown, embodiment 1 of the present invention provides a circuit breaker operation status detection and early warning method, comprising the following steps:

[0045] During the operation period of the circuit, the current sensor is used to collect the current in the electronic circuit containing the circuit breaker. The current data will be continuously collected to generate a current signal and analyzed to generate a corresponding analysis signal;

[0046] The analytical signal includes a first analytical sub-signal and a second analytical sub-signal, and the current increase potential value is calculated by the first analytical sub-signal to indicate the current increase rate or change amplitude, and the relationship between the current increase potential value and the set current increase potential threshold is judged to determine whether to control the circuit system. If the current increase potential value exceeds the set current increase potential threshold, it indicates that the circuit system has an overload risk and needs to be controlled, and a first increase rate control signal is generated;

[0047] The current abnormality value is calculated by the second analytical sub-signal to indicate the sudden change or fluctuation amplitude of the current. The relationship between the current abnormality value and the set current abnormality threshold is judged to determine whether the circuit system should be regulated. If the current abnormality value exceeds the set current abnormality threshold, it indicates that there is a short circuit risk in the circuit system and regulation is required, and a second abnormal control signal is generated.

[0048] In the embodiment of the present invention, the circuit operation period refers to controlling the current flow and operation time of the circuit according to specific circuit use requirements.

[0049] Furthermore, the analysis signal includes a first analysis sub-signal and a second analysis sub-signal, and the acquisition process is:

[0050] The current sensor is used to collect the current value in the electronic circuit containing the circuit breaker and obtain the rated current value of the circuit breaker, and the current difference value is calculated as the difference between the current value and the rated current value of the circuit breaker. The current neighborhood entropy is the ratio of the current difference value to the rated current value of the circuit breaker.

[0051] Determine the corresponding relationship between the current proximity entropy and the current proximity boundary entropy;

[0052] If the current neighborhood entropy is less than or equal to the current neighborhood threshold entropy, the first analytical sub-signal is obtained accordingly;

[0053] If the current proximity entropy is greater than the current proximity threshold entropy, a second analytical sub-signal is obtained accordingly;

[0054] In the embodiment of the present invention, the current difference value reflects the gap between the current and the rated current, and the gap represents the degree of deviation of the current. If the current proximity value is a negative number, it means that the current is lower than the rated value; if it is a positive number, it means that the current is close to or exceeds the rated current; a predefined current proximity threshold entropy is set, and the threshold is usually set based on the equipment operation experience or historical data. For example, the current proximity threshold entropy is set to 0.95, which means that when the current approaches 95% of the rated current, the system will start to pay attention to whether the current exceeds the standard.

[0055] The specific process of calculating the current potential value through the first analytical sub-signal is as follows:

[0056] Define the time interval to be analyzed. When the current exceeds the normal current value, the time interval starts. When the current neighboring entropy is less than or equal to the current neighboring boundary entropy, the time interval ends, forming the time interval to be analyzed.

[0057] In the embodiment of the present invention, the current value within the time period to be analyzed will be used to analyze the current potential value. The system will continuously collect current values, which reflect the dynamic changes of the current in the circuit breaker. The system records all current values ​​in this period to prepare for subsequent analysis.

[0058] The collected current value and time are matched within the time period to be analyzed to form a mapping relationship, and points are drawn in a two-dimensional coordinate axis coordinate system to generate a current trend dynamic curve. The horizontal axis represents time, usually in seconds, minutes or hours, and the vertical axis represents the current value, usually in amperes. The two end points of the current trend dynamic curve, that is, the current values ​​at the start time point and the end time point of the time period to be analyzed, are connected into a straight line to form an increase rate auxiliary line. The increase rate auxiliary line is the baseline of the current change trend, which is used for subsequent comparison and judgment of whether the current growth exceeds the normal range;

[0059] The current trend dynamic curve is compared with the auxiliary line of the rate increase to select the overlapping and intersecting line segments, and the length of the overlapping and intersecting line segments is calculated, which is recorded as the overlapping length of the potential increase line segments. The overlapping length of the potential increase line segments and the length of the auxiliary line of the rate increase are entropy calculated to obtain the overlapping amplitude ZC of the rate increase.

[0060] The current trend dynamic curve is compared with the rate-increasing auxiliary line to obtain non-overlapping curve segments, and the non-overlapping curve segments are grouped into multiple non-overlapping curve sub-segments. The average of the sum of the vertical distances from the midpoints of all non-overlapping curve sub-segments to the rate-increasing auxiliary line is calculated in turn, recorded as the average error distance, and the average error distance value and the rate-increasing auxiliary line length are entropy processed, and the obtained result is recorded as the discrete amplitude LS;

[0061] The current potential value:

[0062]

[0063] in, and is the preset weight parameter.

[0064] Determining the relationship between the current potential increase value and a set current potential increase threshold;

[0065] If the current increase value is greater than the set current increase threshold, it indicates that the current increase is abnormal and may cause overload or circuit breaker. The system will generate a linear increase signal to indicate that the current continues to increase.

[0066] If the current increase potential value is less than or equal to the set current increase potential threshold, it means that the current growth performance is normal, and the system generates a nonlinear increase potential signal, indicating that the current change is stable and does not need to be adjusted immediately.

[0067] Through the obtained linear increase signal, in the coordinate axis corresponding to the current trend dynamic curve, the rated current value of the circuit breaker is first marked with the standard base value, and a line parallel to the horizontal axis is drawn through the standard base value point in the coordinate axis, and the straight line is marked as the circuit breaking reference boundary. The increase rate auxiliary line in the coordinate axis corresponding to the current trend dynamic curve is extended to produce an intersection with the rated reference boundary, and the time value of the intersection mapped to the X-axis is obtained, and the time point value is marked as the estimated circuit breaking time point.

[0068] Comparing the estimated circuit-breaking time point with the end time point within the circuit operation period;

[0069] If the estimated circuit-breaking time point is included in the circuit operation period, it indicates that the circuit system has a circuit-breaking risk and needs to be regulated, then a first rate-increasing regulation signal is generated;

[0070] If the estimated circuit-breaking time point is after the circuit operation period ends, it indicates that the circuit system does not need to be regulated.

[0071] The specific process of calculating the abnormal current value through the second analytical sub-signal is as follows:

[0072] Monitor the current in real time until the current exceeds the normal operating value but does not meet the rated current value of the circuit breaker, and mark the period as an over-limit period. Perform entropy processing on the over-limit period and the total circuit operation period to obtain the abnormal period ratio;

[0073] The sum of all currents in the over-limit period is taken and the average is taken to obtain the current mean in the over-limit period. The absolute value of the difference between the current mean in the over-limit period and the normal current value is taken to obtain the average current deviation. The average current deviation and the normal current value are entropy processed to obtain the current abnormality ratio.

[0074] The product value obtained by multiplying the abnormal interval time period ratio and the current abnormal ratio is the current abnormal value.

[0075] Comparing the abnormal current value with a set abnormal current threshold;

[0076] If the current abnormality value is greater than the set current abnormality threshold, it means that the current abnormality exceeds the set safety limit, and the system will trigger the second abnormal control signal to take further protective measures;

[0077] If the current abnormality value is ≤ the set current abnormality threshold, it means that the current abnormality is still within the acceptable range. The system does not perform any operation and continues to monitor the current changes to ensure the normal operation of the equipment.

[0078] Among them, the first rate increase control signal indicates that: during the period to be analyzed, if the current shows a linear increase trend, it is inferred that the current will reach the rated current value of the circuit breaker at a certain time in the future based on this trend, and compared with the end time point in the circuit operation period, if during the circuit operation period, it is inferred that the current will reach the rated current value of the circuit breaker at a certain time in the future, indicating that the circuit system has a risk of circuit breaking and needs to be controlled, then the first rate increase control signal is generated; the second abnormal control signal indicates that: when the current proximity entropy is greater than the current proximity boundary entropy, even if the circuit breaking analysis condition of the circuit breaker is not triggered, the system will still monitor the duration of the current anomaly and its abnormal amplitude in real time. If the analysis result shows that the current continues to be abnormal, it may cause damage to the circuit or equipment. The system will determine whether it is necessary to take control measures based on the analysis. At this time, the generated second abnormal control signal is intended to prevent the damage caused by the continuous abnormal current even though the current has not reached the circuit breaking condition of the circuit breaker, and timely preventive control is carried out.

[0079] Embodiment 2 of the present invention provides a circuit breaker operation status detection and early warning system, which runs a circuit breaker operation status detection and early warning method described in embodiment 1, including:

[0080] The current acquisition module is used to collect the current in the electronic circuit containing the circuit breaker using a current sensor;

[0081] The signal analysis module is used to analyze the collected and generated current signal to generate a corresponding analysis signal, including a first analysis sub-signal unit and a second analysis sub-signal unit;

[0082] The first analytical sub-signal unit is used to calculate the current potential value using the first analytical sub-signal,

[0083] The first analytical sub-signal unit is used to calculate the current abnormality value using the second analytical sub-signal,

[0084] The first determination module is used to determine the relationship between the current increase potential value and a set current increase potential threshold;

[0085] The second identification module is used to identify the relationship between the abnormal current value and a set abnormal current threshold.

[0086] The beneficial effect of the present invention is that, compared with the prior art, by generating and using the first analytical sub-signal and the second analytical sub-signal, the current can be monitored and regulated more accurately, which can not only improve the use efficiency of the power equipment, but also extend the service life of the equipment. By dynamically monitoring and evaluating the current, the error or delay in manual operation is reduced, and the management accuracy of the power grid is improved; by real-time monitoring and predicting the change trend of the current, potential current abnormality problems can be discovered in time, and the current can be prevented from exceeding the rated range of the equipment, avoiding accidents such as overload, equipment damage or electrical fire, and ensuring the safety and stability of the power system; when the current abnormality persists, especially before the current reaches the rated current value of the circuit breaker, the second abnormal control signal can take regulatory measures in time by analyzing the duration and deviation of the current abnormality to avoid damage to the equipment caused by the continuous abnormal current. Especially for power equipment that runs for a long time, it can effectively avoid equipment aging, failure or greater accidents caused by failure due to current abnormality.

[0087] The present disclosure may be a system, a method and / or a computer program product. The computer program product may include a computer-readable storage medium carrying computer-readable program instructions for causing a processor to implement various aspects of the present disclosure.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A circuit breaker operation status detection and early warning method, characterized in that: The following steps are involved: During the circuit operation period, the current sensor is used to collect the current in the circuit containing the circuit breaker. The current data is continuously collected to generate a current signal and analyzed to generate a corresponding analysis signal. The analytical signal includes a first analytical sub-signal and a second analytical sub-signal, the current increase potential value is calculated by the first analytical sub-signal, and the relationship between the current increase potential value and the set current increase potential threshold is judged to determine whether to control the circuit system, if the current increase potential value exceeds the set current increase potential threshold, it indicates that the circuit system has an overload risk and needs to be controlled, then a first rate increase control signal is generated; The current abnormality value is calculated by the second analytical sub-signal, and the relationship between the current abnormality value and the set current abnormality threshold is judged to determine whether to control the circuit system. If the current abnormality value exceeds the set current abnormality threshold, it indicates that there is a short circuit risk in the circuit system and control is required, then a second abnormal control signal is generated.

2. A circuit breaker operation status detection and early warning method according to claim 1, characterized in that: The analysis signal includes a first analysis sub-signal and a second analysis sub-signal. The acquisition process is: The current sensor is used to collect the current value in the circuit containing the circuit breaker and obtain the rated current value of the circuit breaker, and the current difference value is calculated as the difference between the current value and the rated current value of the circuit breaker, and the current neighborhood entropy is the ratio of the current difference value to the rated current value of the circuit breaker; Determine the corresponding relationship between the current neighborhood entropy and the current neighborhood boundary entropy; If the current neighborhood entropy is less than or equal to the current neighborhood threshold entropy, the first analytical sub-signal is obtained accordingly; If the current neighborhood entropy is greater than the current neighborhood threshold entropy, a second analytical sub-signal is obtained accordingly.

3. A circuit breaker operation status detection and early warning method according to claim 1, characterized in that: The current potential value: in, and is the preset weight parameter, LS is the discrete amplitude, and ZC is the increase rate overlap amplitude; Determining the relationship between the current potential increase value and a set current potential increase threshold; If the current increase value is greater than the set current increase threshold, it means that the current increase is abnormal and causes a circuit breaker, and the system will generate a linear increase signal to indicate that the current continues to increase; If the current increase potential value is less than or equal to the set current increase potential threshold, it means that the current growth performance is normal, and the system generates a nonlinear increase potential signal, indicating that the current change is stable and does not need to be adjusted immediately.

4. A circuit breaker operation status detection and early warning method according to claim 1, characterized in that ； Monitor the current in real time until the current exceeds the normal operating value but does not meet the rated current value of the circuit breaker, and mark the period as an over-limit period. Perform entropy processing on the over-limit period and the total circuit operation period to obtain the abnormal period ratio; The sum of all currents in the over-limit period is taken and the average is taken to obtain the current mean in the over-limit period. The absolute value of the difference between the current mean in the over-limit period and the normal current value is taken to obtain the average current deviation. The average current deviation and the normal current value are entropy processed to obtain the current abnormality ratio. The product value obtained by multiplying the abnormal interval time period ratio and the current abnormal ratio is the current abnormal value; Comparing the abnormal current value with a set abnormal current threshold; If the current abnormality value is greater than the set current abnormality threshold, it means that the current abnormality exceeds the set safety limit, and the system triggers the second abnormality control signal to take further protective measures; If the current abnormality value is ≤ the set current abnormality threshold, it means that the current abnormality is within the safety limit. The system does not perform any operation and continues to monitor the current changes to ensure the normal operation of the equipment.

5. A circuit breaker operation status detection and early warning method according to claim 3, characterized in that: Define the time interval to be analyzed. When the current exceeds the normal current value, the time interval starts. When the current neighboring entropy is less than or equal to the current neighboring boundary entropy, the time interval ends, forming the time interval to be analyzed. The collected current values ​​and time within the time period to be analyzed are plotted in a two-dimensional coordinate axis coordinate system to generate a current trend dynamic curve. The two end points of the current trend dynamic curve, that is, the current values ​​at the start time point and the end time point of the time period to be analyzed, are connected into a straight line to form an increase rate auxiliary line. The increase rate auxiliary line is the baseline of the current change trend, which is used for subsequent comparison and judgment of whether the current growth exceeds the normal range.

6. A circuit breaker operation status detection and early warning method according to claim 5, characterized in that: The current trend dynamic curve is compared with the auxiliary line of the rate increase to select the overlapping and intersecting line segments, and the length of the overlapping and intersecting line segments is calculated, recorded as the overlapping length of the potential increase line segments, and the entropy calculation is performed on the overlapping length of the potential increase line segments and the length of the auxiliary line of the rate increase to obtain the overlapping amplitude ZC of the rate increase.

7. A circuit breaker operation status detection and early warning method according to claim 6, characterized in that: The current trend dynamic curve is compared with the rate-increasing auxiliary line to obtain non-overlapping curve segments, and the non-overlapping curve segments are grouped into multiple non-overlapping curve sub-segments. The average of the sum of the vertical distances from the midpoints of all non-overlapping curve sub-segments to the rate-increasing auxiliary line is calculated in turn, and recorded as the average error distance. The average error distance value and the length of the rate-increasing auxiliary line are entropy processed, and the result obtained is recorded as the discrete amplitude LS.

8. A circuit breaker operation status detection and early warning method according to claim 1, It is characterized by: The first rate-increasing control signal indicates that during the time period to be analyzed, if the current shows a linear increase, it is inferred that the current will reach the rated current value of the circuit breaker at some point in the future based on this trend, and compared with the end time point during the circuit operation period. If during the circuit operation period, it is inferred that the current will reach the rated current value of the circuit breaker at some point in the future, it indicates that there is a risk of circuit breaking in the circuit system and control is required.

9. A circuit breaker operation status detection and early warning method according to claim 1, It is characterized by: When the second abnormal control signal indicates that the current proximity entropy is greater than the current proximity threshold entropy, even if the circuit breaker's circuit breaking analysis condition is not triggered, the system will still monitor the duration of the current anomaly and its abnormal amplitude in real time. If the analysis results show that the continuous abnormal current causes damage to the circuit or equipment, the system will judge whether control measures need to be taken based on this.

10. A circuit breaker operation status detection and early warning system, which runs the circuit breaker operation status detection and early warning method described in any one of claims 1 to 9, characterized in that: include: The current acquisition module is used to collect the current in the electronic circuit containing the circuit breaker using a current sensor; The signal analysis module is used to analyze the collected and generated current signal to generate a corresponding analysis signal, including a first analysis sub-signal unit and a second analysis sub-signal unit; The first analytical sub-signal unit is used to calculate the current potential value using the first analytical sub-signal, The first analytical sub-signal unit is used to calculate the current abnormality value using the second analytical sub-signal, The first determination module is used to determine the relationship between the current increase potential value and a set current increase potential threshold; The second identification module is used to identify the relationship between the abnormal current value and a set abnormal current threshold.

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