An adaptive intelligent leakage protection system

Abstract

The present invention relates to the technical field of leakage protection, and specifically discloses an adaptive intelligent leakage protection system, which includes: a real-time monitoring module for real-time monitoring of leakage current data of any leakage accident of electrical equipment, by comparing the leakage current of any leakage accident of the electrical equipment with a preset leakage current threshold, the leakage risk of the current leakage accident can be analyzed to achieve leakage protection, and then by combining the leakage current changes in the historical monitoring of the electrical equipment and analyzing the risk of future leakage accidents of the electrical equipment based on the leakage current data of the current leakage accident, the risk of future leakage accidents of the electrical equipment can be estimated, thereby achieving early warning of high-risk leakage, and optimizing the circuit leakage protection method based on the leakage early warning can avoid the situation where the leakage current significantly exceeds the leakage protection threshold in the future.

Description

Technical Field

[0001] The present invention relates to the technical field of leakage protection, in particular to an adaptive intelligent leakage protection system. Background Art

[0002] Leakage is one of the common faults in power grid operation, which may lead to serious consequences such as equipment damage, casualties and fire. In order to avoid this situation, a leakage protection system is usually set up to monitor the leakage in the power grid and implement leakage protection in combination with circuit breakers.

[0003] When performing leakage monitoring, traditional leakage protection systems generally monitor the operating parameters of the power grid in real time through a data acquisition module and transmit the data to a data processing and analysis module. This module uses a signal processing algorithm to process the data to obtain characteristic information reflecting the operating status of the power grid and dynamically adjust the leakage protection threshold. When it is detected that the leakage current exceeds the adjusted threshold, a protection control instruction is generated, and the execution module is used to control the circuit breaker to trip, thereby achieving leakage protection.

[0004] Traditional leakage protection systems improve the accuracy and reliability of leakage protection by dynamically adjusting the leakage protection threshold during leakage monitoring. When the leakage current is detected to exceed the adjusted threshold, the circuit breaker can be promptly controlled to trip to achieve leakage protection. However, when the leakage current significantly exceeds the leakage protection threshold, the leakage current will cause irreversible damage to the equipment and circuits, and may even directly cause the insulation material to overheat and burn, resulting in equipment damage and even endangering personal safety. Summary of the Invention

[0005] The purpose of the present invention is to provide an adaptive intelligent leakage protection system to solve the following technical problems:

[0006] How to optimize circuit leakage protection methods.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] An adaptive intelligent leakage protection system, comprising:

[0009] Real-time monitoring module, used to monitor the leakage current data of any leakage accident of electrical equipment in real time;

[0010] The data recording module is used to record the leakage current data and electrical equipment operation data of any leakage accident in the historical monitoring;

[0011] The leakage analysis module is used to compare the leakage current of any leakage accident of the electrical equipment with the preset leakage current threshold, and analyze the risk level of the leakage accident based on the comparison result;

[0012] The data evaluation module is used to evaluate the change of leakage current in the historical monitoring of the electrical equipment in combination with the data recorded by the data recording module when the risk of the leakage accident is judged to be low;

[0013] The intelligent analysis module is used to analyze the risk of future leakage accidents of electrical equipment by combining the evaluation results of the data evaluation module with the leakage current of any leakage accident of the electrical equipment monitored by the real-time monitoring module;

[0014] The emergency circuit protection device includes a terminal execution unit and a circuit breaker. When it is judged that the risk of a leakage accident is high or the risk of a leakage accident of the electrical equipment in the future is high, the terminal execution unit is used to control the circuit breaker to perform a power-off protection operation.

[0015] Furthermore, the analysis process of the leakage analysis module includes:

[0016] When a leakage accident occurs in the electrical equipment, the leakage current data of the leakage accident is collected through the real-time monitoring module, and the leakage current of the electrical equipment is defined as ;

[0017] Where i is any leakage accident of electrical equipment;

[0018] And the leakage current of the i-th leakage accident of the electrical equipment With the preset leakage current threshold Make a comparison;

[0019] like , the system determines that the risk of the i-th leakage accident is high, and issues an instruction to the terminal execution unit, which controls the circuit breaker to perform power-off protection operation;

[0020] like ,The system judges that the risk of the i-th leakage accident is low and no power-off protection operation is required, and analyzes the risk level of future leakage accidents of electrical equipment.

[0021] Furthermore, the evaluation process of the data evaluation module includes:

[0022] By formula Calculate the actual leakage current of the ath leakage accident of the electrical equipment during the historical monitoring process ;

[0023] Among them, a is any leakage accident of electrical equipment during the historical monitoring process, is the ambient humidity when the a-th leakage accident of the electrical equipment occurred during the historical monitoring process, is the preset ambient humidity, is the highest temperature of the electrical equipment when the ath leakage accident occurred during the historical monitoring process, is the ambient temperature when the a-th leakage accident of the electrical equipment occurred during the historical monitoring process, is the preset impact temperature, is the operating voltage value of the electrical equipment when the ath leakage accident occurred during the historical monitoring process, is the preset operating voltage value, for The standard value of To define a function, if , then let Otherwise, let , is the insulation resistance of the electrical equipment when the ath leakage accident occurred during the historical monitoring process, is the preset insulation resistance value, The leakage current when the ath leakage accident of the electrical equipment occurs during the historical monitoring process, and is the weight coefficient, which is set according to empirical fitting. To adjust the coefficient comparison table function, according to the empirical data The range of numerical values is set to fit the degree of influence on the actual leakage current.

[0024] Furthermore, the evaluation process of the data evaluation module also includes:

[0025] By combining the actual leakage current of all leakage accidents of electrical equipment in the historical monitoring process , establish the real leakage current change curve of electrical equipment during historical monitoring ;

[0026] And through the formula Calculate the change in the actual leakage current of all leakage accidents of electrical equipment during historical monitoring ;

[0027] in, This is the first leakage accident of electrical equipment in the historical monitoring process. This is the last leakage accident of the electrical equipment during the historical monitoring process. is the total number of leakage accidents before the i-th leakage accident of the electrical equipment occurs, For all The average value of .

[0028] Furthermore, the evaluation process of the data evaluation module also includes:

[0029] By analyzing the changes in the actual leakage current of all leakage accidents of electrical equipment during historical monitoring Assign a value to generate a value between 1 and 1.3, and the change of the actual leakage current in all leakage accidents of electrical equipment during the historical monitoring process The weight value of the change in the actual leakage current that increases with the increase;

[0030] Among them, the change in the actual leakage current of all leakage accidents of electrical equipment during the historical monitoring process The corresponding weight value of the actual leakage current change is .

[0031] Furthermore, the analysis process of the intelligent analysis module includes:

[0032] When the risk of the i-th leakage accident is judged to be low;

[0033] By formula Calculate the estimated leakage current of future leakage accidents of electrical equipment after the i-th leakage accident ;

[0034] in, is the proportional coefficient, which is set according to empirical fitting. For all The maximum value in For all The minimum value in .

[0035] Furthermore, the analysis process of the intelligent analysis module also includes:

[0036] The estimated leakage current of the future leakage accidents of the electrical equipment after the i-th leakage accident With the preset leakage current threshold Make a comparison;

[0037] like ,The system determines that when a leakage accident occurs in the future, the leakage current of the electrical equipment is high, which means that if a leakage accident occurs in the future, the possibility of high risk is higher, and issues an instruction to the terminal execution unit to control the circuit breaker to perform power-off protection operation through the terminal execution unit;

[0038] like , the system determines that when a leakage accident occurs in the electrical equipment in the future, the leakage current is low, which means that if a leakage accident occurs in the future, the possibility of high risk is not high and there is no need to perform power-off protection operations.

[0039] Furthermore, the control process of the terminal execution unit includes:

[0040] When the risk of the i-th leakage accident is judged to be high, the terminal execution unit controls the circuit breaker to perform power-off protection operation, and a fault warning is pushed to the user via text message or phone call;

[0041] When it is determined that the electrical equipment will have a leakage accident in the future and the possibility of high risk is higher, the terminal execution unit controls the circuit breaker to perform power-off protection operations, and makes a maintenance warning and pushes it to the user through text messages or telephone calls.

[0042] Beneficial effects of the present invention:

[0043] (1) The present invention compares the leakage current of any leakage accident of the electrical equipment with a preset leakage current threshold value, thereby analyzing the leakage risk of the current leakage accident to achieve leakage protection. Then, by combining the leakage current change in the historical monitoring of the electrical equipment and analyzing the risk of future leakage accidents of the electrical equipment based on the leakage current data of the current leakage accident, the risk of future leakage accidents of the electrical equipment can be estimated, thereby achieving early warning of high-risk leakage. Optimizing the circuit leakage protection method based on the leakage early warning can avoid the situation where the leakage current significantly exceeds the leakage protection threshold value in the future.

[0044] (2) The present invention calculates the leakage current of the i-th leakage accident of the electrical equipment by With the preset leakage current threshold By comparing, an accurate judgment can be made on the risk level of the leakage accident through this comparison method. When the risk level of the leakage accident is judged to be high, an instruction can be issued to the terminal execution unit to control the circuit breaker to perform power-off protection operation through the terminal execution unit, thereby realizing leakage protection for the leakage accident. When the risk level of the leakage accident is judged to be low, adaptive adjustment can be made, and the circuit leakage protection method can be optimized by analyzing the risk level of future leakage accidents of electrical equipment.

[0045] (3) The present invention obtains the change in the actual leakage current of all leakage accidents of electrical equipment during the historical monitoring process by calculation This data can reflect the change trend of the real leakage current in all leakage accidents during the historical monitoring process. The larger the value, the greater the leakage current of the electrical equipment. This indicates that the electrical equipment is aging or failing during use. Therefore, based on the above situation, accurate and reliable data can be provided for subsequent risk analysis of future leakage accidents, ensuring the accuracy of the analysis results.

[0046] (4) The present invention calculates the estimated leakage current of the future leakage accidents of the electrical equipment after the i-th leakage accident With the preset leakage current threshold By comparing, it is possible to judge whether the electrical equipment will be at high risk of leakage accidents in the future through this comparison method. When it is judged that the possibility of high-risk accidents is higher, the circuit breaker is controlled by the terminal execution unit to perform power-off protection. Through such a setting, the circuit leakage protection method can be optimized to avoid high-risk leakage accidents, and to avoid strong currents directly causing overheating and combustion of insulating materials, resulting in equipment damage and even endangering personal safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The present invention will be further described below with reference to the accompanying drawings.

[0048] Figure 1 This is a schematic block diagram of an adaptive intelligent leakage protection system in the present invention. DETAILED DESCRIPTION

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0050] See also Figure 1 As shown, in one embodiment, the present application provides an adaptive intelligent leakage protection system, the system comprising:

[0051] Real-time monitoring module, used to monitor the leakage current data of any leakage accident of electrical equipment in real time;

[0052] The data recording module is used to record the leakage current data and electrical equipment operation data of any leakage accident in the historical monitoring;

[0053] The leakage analysis module is used to compare the leakage current of any leakage accident of the electrical equipment with the preset leakage current threshold, and analyze the risk level of the leakage accident based on the comparison result;

[0054] The data evaluation module is used to evaluate the change of leakage current in the historical monitoring of the electrical equipment in combination with the data recorded by the data recording module when the risk of the leakage accident is judged to be low;

[0055] The intelligent analysis module is used to analyze the risk of future leakage accidents of electrical equipment by combining the evaluation results of the data evaluation module with the leakage current of any leakage accident of the electrical equipment monitored by the real-time monitoring module;

[0056] The emergency circuit protection device includes a terminal execution unit and a circuit breaker, which is used to control the circuit breaker to perform a power-off protection operation through the terminal execution unit when it is judged that the risk of a leakage accident is high or the risk of a future leakage accident of the electrical equipment is high;

[0057] Through the above technical solution, this example provides a real-time monitoring module and a data recording module, which are respectively used to monitor the leakage current data of any leakage accident of the electrical equipment in real time, and record the leakage current data of any leakage accident in the historical monitoring and the operation data of the electrical equipment. When performing leakage protection monitoring, the leakage current of any leakage accident of the electrical equipment is first compared with the preset leakage current threshold through the leakage analysis module, and the risk level of the leakage accident is analyzed according to the comparison result. When it is judged that the risk of the leakage accident is high, a single action is executed through the terminal. The terminal controls the circuit breaker to perform a power-off protection operation. Otherwise, when it is judged that the risk of the leakage accident is low, the data evaluation module is combined with the data recorded by the data recording module to evaluate the change of the leakage current in the historical monitoring of the electrical equipment. The intelligent analysis module combines the evaluation results of the data evaluation module with the leakage current of any leakage accident of the electrical equipment monitored by the real-time monitoring module to analyze the risk of future leakage accidents of the electrical equipment. Finally, when it is judged that the risk of future leakage accidents of the electrical equipment is high, the terminal execution unit controls the circuit breaker to perform a power-off protection operation.

[0058] Through such a setting, by comparing the leakage current of any leakage accident of the electrical equipment with the preset leakage current threshold, the leakage risk of the current leakage accident can be analyzed to achieve leakage protection. Afterwards, by combining the changes in the leakage current in the historical monitoring of the electrical equipment and analyzing the risk of future leakage accidents of the electrical equipment based on the leakage current data of the current leakage accident, the risk of future leakage accidents of the electrical equipment can be estimated, thereby achieving early warning of high-risk leakage. Optimizing the circuit leakage protection method based on the leakage early warning can avoid the situation in the future where the leakage current significantly exceeds the leakage protection threshold.

[0059] The analysis process of the leakage analysis module includes:

[0060] When a leakage accident occurs in the electrical equipment, the leakage current data of the leakage accident is collected through the real-time monitoring module, and the leakage current of the electrical equipment is defined as ;

[0061] Where i is any leakage accident of electrical equipment;

[0062] And the leakage current of the i-th leakage accident of the electrical equipment With the preset leakage current threshold Make a comparison;

[0063] like , the system determines that the risk of the i-th leakage accident is high, and issues an instruction to the terminal execution unit, which controls the circuit breaker to perform power-off protection operation;

[0064] like ,The system determines that the risk of the i-th leakage accident is low and no power-off protection operation is required, and analyzes the risk of future leakage accidents of electrical equipment;

[0065] Through the above technical solution, this example calculates the leakage current of the i-th leakage accident of the electrical equipment With the preset leakage current threshold By comparing, an accurate judgment can be made on the risk level of the leakage accident through this comparison method. When the risk level of the leakage accident is judged to be high, an instruction can be issued to the terminal execution unit to control the circuit breaker to perform power-off protection operation through the terminal execution unit, thereby realizing leakage protection for the leakage accident. When the risk level of the leakage accident is judged to be low, adaptive adjustment can be made, and the circuit leakage protection method can be optimized by analyzing the risk level of future leakage accidents of electrical equipment.

[0066] The evaluation process of the data evaluation module includes:

[0067] By formula Calculate the actual leakage current of the ath leakage accident of the electrical equipment during the historical monitoring process ;

[0068] Among them, a is any leakage accident of electrical equipment during the historical monitoring process, is the ambient humidity when the a-th leakage accident of the electrical equipment occurred during the historical monitoring process, is the preset ambient humidity, is the highest temperature of the electrical equipment when the ath leakage accident occurred during the historical monitoring process, is the ambient temperature when the a-th leakage accident of the electrical equipment occurred during the historical monitoring process, is the preset impact temperature, is the operating voltage value of the electrical equipment when the ath leakage accident occurred during the historical monitoring process, is the preset operating voltage value, for The above standards can be selected and set based on the allowable error in the empirical data. To define a function, if , then let Otherwise, let , is the insulation resistance of the electrical equipment when the ath leakage accident occurred during the historical monitoring process, is the preset insulation resistance value, The leakage current when the ath leakage accident of the electrical equipment occurs during the historical monitoring process, and is the weight coefficient, which is set according to empirical fitting. To adjust the coefficient comparison table function, according to the empirical data The influence of the range of numerical values on the actual leakage current is fitted and set;

[0069] Through the above technical solution, this example provides the actual leakage current of the a-th leakage accident of the electrical equipment during the historical monitoring process. , can be obtained by formula Calculation shows that, obviously, when the ambient humidity, the maximum temperature of the electrical equipment and the operating voltage of the electrical equipment are greater during the historical monitoring process, and the insulation resistance is smaller during the historical monitoring process, the actual leakage current of the electrical equipment in the a leakage accident will be greater. On the contrary, when the ambient humidity, the maximum temperature of the electrical equipment and the operating voltage of the electrical equipment when the a leakage accident of the electrical equipment occurs are smaller, and the insulation resistance of the electrical equipment when the a leakage accident of the electrical equipment occurs during the historical monitoring process is higher, then the actual leakage current of the a leakage accident of the electrical equipment during the historical monitoring process is the bigger it is;

[0070] The main reason is that when the environmental humidity is higher when the leakage accident occurs, the conductivity of the leakage current is better, and the higher the maximum temperature of the electrical equipment is, the effect of the insulation material will be reduced, thereby increasing the leakage current. The higher the operating voltage value of the electrical equipment is, the more current will be in the circuit of the electrical equipment. On this basis, the leakage current will increase, and the reduction of insulation resistance will directly compensate for the leakage current. Therefore, by combining diversified data, the leakage current of the electrical equipment when the a leakage accident occurs during the historical monitoring process can be corrected, so as to obtain the actual leakage current of the electrical equipment when the a leakage accident occurs, which is not affected by the external environment. This provides diversified data support for the subsequent analysis of the risk level of future leakage accidents of the electrical equipment, and ensures the accuracy of the analysis results.

[0071] It should be noted that any leakage accident of the electrical equipment during the historical monitoring process refers to any leakage accident of the electrical equipment during the period from the start of leakage monitoring to the occurrence of the i-th leakage accident.

[0072] The evaluation process of the data evaluation module also includes:

[0073] By combining the actual leakage current of all leakage accidents of electrical equipment in the historical monitoring process , establish the real leakage current change curve of electrical equipment during historical monitoring ;

[0074] And through the formula Calculate the change in the actual leakage current of all leakage accidents of electrical equipment during historical monitoring ;

[0075] in, This is the first leakage accident of electrical equipment in the historical monitoring process. This is the last leakage accident of the electrical equipment during the historical monitoring process. is the total number of leakage accidents before the i-th leakage accident of the electrical equipment occurs, For all The average value of

[0076] Through the above technical solution, this example provides the change of the actual leakage current of all leakage accidents of electrical equipment during the historical monitoring process. , can be obtained by formula Calculation is obtained by combining the actual leakage current of all leakage accidents of electrical equipment in the historical monitoring process. , establish the real leakage current change curve of electrical equipment during historical monitoring , and establish a calculation model to obtain the change in the actual leakage current of all leakage accidents of electrical equipment during the historical monitoring process This data reflects the changes in the leakage current of all leakage accidents of electrical equipment during the historical monitoring process. Since this data is calculated based on diversified data, its accuracy and reliability are high. Therefore, when this data is larger, it means that the leakage current of each leakage accident of the electrical equipment gradually increases with the increase of leakage accidents, indicating that the electrical equipment is aging or faulty. Therefore, this data can be combined with the leakage current of the i-th leakage accident of the electrical equipment. Estimate the risk of future leakage accidents, thereby achieving early warning of high-risk leakage accidents.

[0077] The evaluation process of the data evaluation module also includes:

[0078] By analyzing the changes in the actual leakage current of all leakage accidents of electrical equipment during historical monitoring Assign a value to generate a value between 1 and 1.3, and the change of the actual leakage current in all leakage accidents of electrical equipment during the historical monitoring process The weight value of the change in the actual leakage current that increases with the increase;

[0079] Among them, the change in the actual leakage current of all leakage accidents of electrical equipment during the historical monitoring process The corresponding weight value of the actual leakage current change is ;

[0080] Through the above technical solution, this example provides the change of the actual leakage current of all leakage accidents of electrical equipment during the historical monitoring process. The assignment process;

[0081] As an embodiment, the weight value of the change in the actual leakage current The value range of is as follows;

[0082]

[0083] It should be noted that the change in the actual leakage current of all leakage accidents of electrical equipment during the historical monitoring process The increase in the actual leakage current corresponds to the weight value of the change It will increase synchronously, specifically, the change in the actual leakage current of all leakage accidents of electrical equipment during the historical monitoring process It can reflect the change trend of the real leakage current in all leakage accidents of electrical equipment during the historical monitoring process. The larger the value, the greater the leakage current of the electrical equipment will be. As the leakage accidents increase, the leakage current will gradually increase, indicating that the electrical equipment is aging or failing during use. Therefore, based on the above situation, the weight value of the change in the actual leakage current is The change in the actual leakage current of all leakage accidents of electrical equipment during the historical monitoring process will be Therefore, it provides accurate and reliable data for the subsequent analysis of the risk of future leakage accidents and ensures the accuracy of the analysis results.

[0084] The analysis process of the intelligent analysis module includes:

[0085] When the risk of the i-th leakage accident is judged to be low;

[0086] By formula Calculate the estimated leakage current of future leakage accidents of electrical equipment after the i-th leakage accident ;

[0087] in, is the proportional coefficient, which is set according to empirical fitting. For all The maximum value in For all The minimum value in ;

[0088] Through the above technical solution, this example provides the estimated leakage current of the electrical equipment in the future after the i-th leakage accident. , can be obtained by formula Calculated, where the weight value of the change in the actual leakage current is It is calculated based on diversified data, so its accuracy and reliability are high. This example is based on the weight value of the change in the actual leakage current. The leakage current of the i-th leakage accident of the electrical equipment The high-quality data obtained by fusion can be used to accurately calculate the estimated leakage current of electrical equipment in future leakage accidents after the i-th leakage accident. This data can reflect the leakage risk of electrical equipment in the future when leakage accidents occur, thereby realizing risk warning and avoiding high-risk leakage accidents.

[0089] The analysis process of the intelligent analysis module also includes:

[0090] The estimated leakage current of the future leakage accidents of the electrical equipment after the i-th leakage accident With the preset leakage current threshold Make a comparison;

[0091] like ,The system determines that when a leakage accident occurs in the future, the leakage current of the electrical equipment is high, which means that if a leakage accident occurs in the future, the possibility of high risk is higher, and issues an instruction to the terminal execution unit to control the circuit breaker to perform power-off protection operation through the terminal execution unit;

[0092] like ,When the system determines that a leakage accident will occur in the future, the leakage current of the electrical equipment is low, which means that if a leakage accident occurs in the future, the possibility of high risk is not high, and power-off protection operation is not required;

[0093] Through the above technical solution, this example calculates the estimated leakage current of the future leakage accidents of the electrical equipment after the i-th leakage accident With the preset leakage current threshold By comparing, it is possible to judge whether the electrical equipment will be at high risk of leakage accidents in the future through this comparison method. When it is judged that the possibility of high-risk accidents is higher, the circuit breaker is controlled by the terminal execution unit to perform power-off protection. Through such a setting, the circuit leakage protection method can be optimized to avoid high-risk leakage accidents, and to avoid strong currents directly causing overheating and combustion of insulating materials, resulting in equipment damage and even endangering personal safety.

[0094] The control process of the terminal execution unit includes:

[0095] When the risk of the i-th leakage accident is judged to be high, the terminal execution unit controls the circuit breaker to perform power-off protection operation, and a fault warning is pushed to the user via text message or phone call;

[0096] When it is determined that the electrical equipment will have a leakage accident in the future and the risk is higher, the terminal execution unit controls the circuit breaker to perform power-off protection operations, and issues a maintenance warning and pushes it to the user via text message or phone call;

[0097] Through the above technical solution, this example provides a control process for the terminal execution unit. When the risk of the i-th leakage accident is judged to be high, the terminal execution unit controls the circuit breaker to perform a power-off protection operation and issues a fault warning, which is pushed to the user via text message or phone call. When the possibility of a future leakage accident of the electrical equipment is judged to be even higher, the terminal execution unit controls the circuit breaker to perform a power-off protection operation and issues a maintenance warning, which is pushed to the user via text message or phone call.

[0098] Through such a setting, not only can the circuit breaker be controlled by the terminal execution unit to perform power-off protection operations in a timely manner when the risk of a leakage accident of the electrical equipment is high, and a fault warning can be issued to remind the user, but also when it is judged that the electrical equipment will have a leakage accident in the future and the possibility of high risk is higher, the circuit breaker can be controlled by the terminal execution unit to perform power-off protection operations, and a maintenance warning can be pushed to the user via text message or telephone. By predicting future risks, the circuit leakage protection method can be optimized to ensure the normal operation of the electrical equipment.

[0099] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An adaptive intelligent leakage protection system, characterized in that: The system comprises: Real-time monitoring module, used to monitor the leakage current data of any leakage accident of electrical equipment in real time; The data recording module is used to record the leakage current data and electrical equipment operation data of any leakage accident in the historical monitoring; The leakage analysis module is used to compare the leakage current of any leakage accident of the electrical equipment with the preset leakage current threshold, and analyze the risk level of the leakage accident based on the comparison result; The data evaluation module is used to evaluate the change of leakage current in the historical monitoring of the electrical equipment in combination with the data recorded by the data recording module when the risk of the leakage accident is judged to be low; The intelligent analysis module is used to analyze the risk of future leakage accidents of electrical equipment by combining the evaluation results of the data evaluation module with the leakage current of any leakage accident of the electrical equipment monitored by the real-time monitoring module; The emergency circuit protection device includes a terminal execution unit and a circuit breaker, which is used to control the circuit breaker to perform a power-off protection operation through the terminal execution unit when it is judged that the risk of a leakage accident is high or the risk of a future leakage accident of the electrical equipment is high; The analysis process of the leakage analysis module includes: When a leakage accident occurs in the electrical equipment, the leakage current data of the leakage accident is collected through the real-time monitoring module, and the leakage current of the electrical equipment is defined as ; Where i is any leakage accident of electrical equipment; And the leakage current of the i-th leakage accident of the electrical equipment With the preset leakage current threshold Make a comparison; like , the system determines that the risk of the i-th leakage accident is high, and issues an instruction to the terminal execution unit, which controls the circuit breaker to perform power-off protection operation; like ,The system determines that the risk of the i-th leakage accident is low and no power-off protection operation is required, and analyzes the risk of future leakage accidents of electrical equipment; The evaluation process of the data evaluation module includes: By formula Calculate the actual leakage current of the ath leakage accident of the electrical equipment during the historical monitoring process ; Among them, a is any leakage accident of electrical equipment during the historical monitoring process, is the ambient humidity when the a-th leakage accident of the electrical equipment occurred during the historical monitoring process, is the preset ambient humidity, is the highest temperature of the electrical equipment when the ath leakage accident occurred during the historical monitoring process, is the ambient temperature when the a-th leakage accident of the electrical equipment occurred during the historical monitoring process, is the preset impact temperature, is the operating voltage value of the electrical equipment when the ath leakage accident occurred during the historical monitoring process, is the preset operating voltage value, for The standard value of To define a function, if , then let Otherwise, let , is the insulation resistance of the electrical equipment when the ath leakage accident occurred during the historical monitoring process, is the preset insulation resistance value, The leakage current when the ath leakage accident of the electrical equipment occurs during the historical monitoring process, and is the weight coefficient, which is set according to empirical fitting. To adjust the coefficient comparison table function, according to the empirical data The influence of the range of numerical values on the actual leakage current is fitted and set; The evaluation process of the data evaluation module also includes: By combining the actual leakage current of all leakage accidents of electrical equipment in the historical monitoring process , establish the real leakage current change curve of electrical equipment during historical monitoring ; And through the formula Calculate the change in the actual leakage current of all leakage accidents of electrical equipment during historical monitoring ; in, This is the first leakage accident of electrical equipment in the historical monitoring process. This is the last leakage accident of the electrical equipment during the historical monitoring process. is the total number of leakage accidents before the i-th leakage accident of the electrical equipment occurs, For all The average value of The evaluation process of the data evaluation module also includes: By analyzing the changes in the actual leakage current of all leakage accidents of electrical equipment during historical monitoring Assign a value to generate a value between 1 and 1.3, and the change of the actual leakage current in all leakage accidents of electrical equipment during the historical monitoring process The weight value of the change in the actual leakage current that increases with the increase; Among them, the change in the actual leakage current of all leakage accidents of electrical equipment during the historical monitoring process The corresponding weight value of the actual leakage current change is ; The analysis process of the intelligent analysis module includes: When the risk of the i-th leakage accident is judged to be low; By formula Calculate the estimated leakage current of future leakage accidents of electrical equipment after the i-th leakage accident ; in, is the proportional coefficient, which is set according to empirical fitting. For all The maximum value in For all The minimum value in .

2. The adaptive intelligent leakage protection system according to claim 1, characterized in that: The analysis process of the intelligent analysis module also includes: The estimated leakage current of the future leakage accidents of the electrical equipment after the i-th leakage accident With the preset leakage current threshold Make a comparison; like ,The system determines that when a leakage accident occurs in the future, the leakage current of the electrical equipment is high, which means that if a leakage accident occurs in the future, the possibility of high risk is higher, and issues an instruction to the terminal execution unit to control the circuit breaker to perform power-off protection operation through the terminal execution unit; like , the system determines that when a leakage accident occurs in the electrical equipment in the future, the leakage current is low, which means that if a leakage accident occurs in the future, the possibility of high risk is not high and there is no need to perform power-off protection operations.

3. The adaptive intelligent leakage protection system according to claim 2, characterized in that: The control process of the terminal execution unit includes: When the risk of the i-th leakage accident is judged to be high, the terminal execution unit controls the circuit breaker to perform power-off protection operation, and a fault warning is pushed to the user via text message or phone call; When it is determined that the electrical equipment will have a leakage accident in the future and the possibility of high risk is higher, the terminal execution unit controls the circuit breaker to perform power-off protection operations, and makes a maintenance warning and pushes it to the user through text messages or telephone calls.

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