Self-adaptive intelligent leakage protection system

Abstract

The invention relates to the technical field of electric leakage protection, and particularly discloses a self-adaptive intelligent electric leakage protection system, which comprises a real-time monitoring module used for monitoring electric leakage current magnitude data of any one electric leakage accident of electric equipment in real time, by comparing the electric leakage current magnitude of any one electric leakage accident of the electric equipment with the preset electric leakage current magnitude threshold value, the electric leakage risk of the current electric leakage accident can be analyzed to realize electric leakage protection, and then the electric leakage current magnitude change condition in historical monitoring of the electric equipment is combined; and analyzing the risk level of the future electric leakage accident of the electric equipment based on the electric leakage current magnitude data of the current electric leakage accident, namely estimating the risk level of the future electric leakage accident of the electric equipment, thereby realizing early warning of high-risk electric leakage, and optimizing the circuit electric leakage protection method based on electric leakage early warning. And the situation that the leakage current greatly exceeds the leakage protection threshold value in the future can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of leakage protection, and specifically 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, personal injury and fire. To avoid such situations, a leakage protection system is usually set up to monitor the leakage in the power grid and combine with a circuit breaker to achieve leakage protection.

[0003] When the traditional leakage protection system monitors leakage, it generally monitors the operation parameters of the power grid in real time through a data acquisition module and transmits the data to a data processing and analysis module. This module processes the data using signal processing algorithms to obtain characteristic information reflecting the operation state of the power grid, and dynamically adjusts the leakage protection threshold. When it detects that the leakage current exceeds the adjusted threshold, it generates a protection control instruction and controls the circuit breaker to trip through an execution module to achieve leakage protection.

[0004] When the traditional leakage protection system monitors leakage, it improves the accuracy and reliability of leakage protection by dynamically adjusting the leakage protection threshold. When it detects that the leakage current exceeds the adjusted threshold, it can timely control the circuit breaker to trip to achieve leakage protection. However, when the leakage current greatly exceeds the leakage protection threshold, the leakage current will cause irreversible damage to the equipment and circuit, and even directly cause the insulating 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: How to optimize the circuit leakage protection method.

[0006] The purpose of the present invention can be achieved through the following technical solutions: An adaptive intelligent leakage protection system, the system includes: A real-time monitoring module, used to monitor the leakage current data of any leakage accident of an electrical equipment in real time; A data recording module, used to record the leakage current data of any leakage accident and the operation data of the electrical equipment in historical monitoring; A leakage analysis module, used to compare the leakage current of any leakage accident of the electrical equipment with a preset leakage current threshold, and analyze the risk level of this leakage accident according to the comparison result; A data evaluation module, used to evaluate the change of the leakage current in the historical monitoring of the electrical equipment by combining the data recorded by the data recording module when it is judged that the risk of this leakage accident is low; An intelligent analysis module, which is used to analyze the risk level of future leakage accidents of the electrical equipment by combining the evaluation result of the data evaluation module and the leakage current of any leakage accident of the electrical equipment monitored by the real-time monitoring module. An emergency circuit protection device, including a terminal execution unit and a circuit breaker, which is used to control the circuit breaker to perform power-off protection operations through the terminal execution unit when it is judged that the risk of this leakage accident is high or the risk of future leakage accidents of the electrical equipment is high.

[0007] Further, the analysis process of the leakage analysis module includes: When a leakage accident occurs in the electrical equipment, the real-time monitoring module collects the leakage current data of this leakage accident, and defines the leakage current of this leakage accident of the electrical equipment as ; where i is any leakage accident of the electrical equipment; And define the leakage current of the i-th leakage accident of the electrical equipment as Compare it with the preset leakage current threshold ; If , the system judges that the risk of the i-th leakage accident is high, and issues an instruction to the terminal execution unit to control the circuit breaker to perform power-off protection operations; If , the system judges that the risk of the i-th leakage accident is low, and there is no need to perform power-off protection operations, and analyzes the risk level of future leakage accidents of the electrical equipment.

[0008] Further, the evaluation process of the data evaluation module includes: Calculate the true leakage current in the a-th leakage accident of the electrical equipment during the historical monitoring process through the formula ; where a is any leakage accident of the electrical equipment during the historical monitoring process, is the environmental humidity when the a-th leakage accident of the electrical equipment occurs during the historical monitoring process, is the preset environmental humidity, is the highest temperature of the electrical equipment when the a-th leakage accident of the electrical equipment occurs during the historical monitoring process, is the environmental temperature when the a-th leakage accident of the electrical equipment occurs during the historical monitoring process, is the preset influence temperature, is the operating voltage value when the a-th leakage accident of the electrical equipment occurs during the historical monitoring process, is the preset operating voltage value, is standard value of To define a function, if , then let , otherwise, let , is the insulation resistance value when the a-th leakage accident of the electrical equipment occurs during the historical monitoring process, is the preset insulation resistance value, the leakage current when the a-th leakage accident of the electrical equipment occurs during the historical monitoring process, and are weight coefficients, set by empirical fitting, is an adjustment coefficient look-up table function, set by fitting the influence degree of the numerical value range in the empirical data on the true leakage current.

[0009] Furthermore, the evaluation process of the data evaluation module further includes: By combining the true leakage currents in all leakage accidents of the electrical equipment during the historical monitoring process, ; And through the formula calculate the change amount of the true leakage current in all leakage accidents of the electrical equipment during the historical monitoring process; wherein, is the first leakage accident of the electrical equipment during the historical monitoring process, 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, is all average value.

[0010] Furthermore, the evaluation process of the data evaluation module further includes: By assigning values to the change amount of the true leakage current in all leakage accidents of the electrical equipment during the historical monitoring process, to generate a change amount weight value of the true leakage current that is between 1 - 1.3 and increases as the change amount of the true leakage current in all leakage accidents of the electrical equipment during the historical monitoring process increases; wherein, the change amount weight value corresponding to the change amount of the true leakage current in all leakage accidents of the electrical equipment during the historical monitoring process is set as .

[0011] Furthermore, the analysis process of the intelligent analysis module includes: When it is determined that the risk of the i-th leakage accident is low; Through the formula Calculate the estimated leakage current of future leakage accidents of the electrical equipment after the i-th leakage accident ; Wherein, Is a proportionality coefficient, set by empirical fitting, Is all The maximum value in, Is all The minimum value in.

[0012] Furthermore, the analysis process of the intelligent analysis module further includes: By comparing the estimated leakage current of future leakage accidents of the electrical equipment after the i-th leakage accident With the preset leakage current threshold For comparison; If , the system determines that when the electrical equipment has a leakage accident in the future, the leakage current is high, that is, it represents that if a leakage accident occurs in the future, the possibility of high risk is higher, and an instruction is issued to the terminal execution unit to control the circuit breaker to perform power-off protection operation; If , the system determines that when the electrical equipment has a leakage accident in the future, the leakage current is low, that is, it represents that if a leakage accident occurs in the future, the possibility of high risk is not high, and no power-off protection operation is required.

[0013] Furthermore, the control process of the terminal execution unit includes: When it is determined that the risk of the i-th leakage accident is high, control the circuit breaker to perform power-off protection operation through the terminal execution unit, and issue a fault warning and push it to the user by information or phone; When it is determined that when the electrical equipment has a leakage accident in the future, the possibility of high risk is higher, control the circuit breaker to perform power-off protection operation through the terminal execution unit, and issue a maintenance warning and push it to the user by information or phone.

[0014] Advantages of the present invention: (1) By comparing the leakage current of any leakage accident of the electrical equipment with the preset leakage current threshold value, the present invention can analyze the leakage risk of the current leakage accident to achieve leakage protection. Then, by combining the change of the leakage current in the historical monitoring of the electrical equipment and analyzing the risk level of future leakage accidents of the electrical equipment based on the leakage current data of the current leakage accident, the risk level of future leakage accidents of the electrical equipment can be estimated, so as to realize the early warning of high-risk leakage. And by optimizing the circuit leakage protection method based on the leakage early warning, the situation that the leakage current greatly exceeds the leakage protection threshold value in the future can be avoided.

[0015] (2) The present invention compares the leakage current of the i-th leakage accident of the electrical equipment with the preset leakage current threshold value Through this comparison method, an accurate judgment can be made on the risk level of this leakage accident. When it is judged that the risk of this leakage accident is high, an instruction can be issued to the terminal execution unit, and the circuit breaker can be controlled by the terminal execution unit to perform the power-off protection operation, so as to realize the leakage protection of this leakage accident. When it is judged that the risk of this leakage accident is low, an adaptive adjustment can be made, and by analyzing the risk level of future leakage accidents of the electrical equipment, the circuit leakage protection method can be optimized.

[0016] (3) The present invention calculates the change amount of the true leakage current in all leakage accidents of the electrical equipment during the historical monitoring process , and this data can reflect the change trend of the true leakage current in all leakage accidents during the historical monitoring process. When the change amount of the true leakage current in all leakage accidents during the historical monitoring process is larger, it means that the leakage current of the electrical equipment gradually increases with the increase of leakage accidents, indicating that there is aging or malfunction in the electrical equipment during use. Therefore, based on the above situation, accurate and reliable data can be provided for subsequent analysis of the risk of future leakage accidents, ensuring the accuracy of the analysis results.

[0017] (4) The present invention compares the estimated leakage current of future leakage accidents of the electrical equipment after the i-th leakage accident with the preset leakage current threshold value Through this comparison method, a judgment can be made on whether a future leakage accident of the electrical equipment is a high-risk accident. When it is judged that the possibility of a high-risk accident is higher, the circuit breaker can be controlled by the terminal execution unit to perform the power-off protection operation. By setting like this, the circuit leakage protection method can be optimized to avoid the occurrence of high-risk leakage accidents, and avoid the situation that strong current directly causes the insulating material to overheat and burn, resulting in equipment damage or even endangering personal safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a schematic block diagram of an adaptive intelligent leakage protection system in the present invention. Specific embodiments

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figure 1 As shown, in one embodiment, the present application provides an adaptive intelligent leakage protection system, and the system includes: A real-time monitoring module for real-time monitoring of the leakage current data of any leakage accident of an electrical device; A data recording module for recording the leakage current data and the operating data of the electrical device of any leakage accident in historical monitoring; A leakage analysis module for comparing the leakage current of any leakage accident of an electrical device with a preset leakage current threshold, and analyzing the risk level of the leakage accident according to the comparison result; A data evaluation module for evaluating the change of the leakage current in the historical monitoring of the electrical device by combining the data recorded by the data recording module when it is determined that the risk of the leakage accident is low; An intelligent analysis module for analyzing the risk level of future leakage accidents of an electrical device by combining the evaluation result of the data evaluation module and the leakage current of any leakage accident of the electrical device monitored by the real-time monitoring module; An emergency circuit protection device, including a terminal execution unit and a circuit breaker, for controlling the circuit breaker to perform a power-off protection operation through the terminal execution unit when it is determined that the risk of the leakage accident is high or the risk of future leakage accidents of the electrical device is high; Through the above technical solution, this embodiment provides a real-time monitoring module and a data recording module, which are respectively used to monitor in real time the leakage current data of any leakage accident of an electrical equipment, and record the leakage current data of any leakage accident and the operation data of the electrical equipment in historical monitoring. When performing leakage protection monitoring, first, the leakage current of any leakage accident of the electrical equipment is compared with a preset leakage current threshold by a leakage analysis module, and the risk level of this leakage accident is analyzed according to the comparison result. When it is determined that the risk of this leakage accident is high, the terminal execution unit is used to control the circuit breaker to perform power-off protection operation. Otherwise, when it is determined that the risk of this leakage accident is low, the data evaluation module combines the data recorded by the data recording module to evaluate the change of the leakage current in the historical monitoring of the electrical equipment, and the intelligent analysis module combines the evaluation result of the data evaluation module and the leakage current of any leakage accident of the electrical equipment monitored by the real-time monitoring module to analyze the risk level of future leakage accidents of the electrical equipment. Finally, when it is determined that the risk of future leakage accidents of the electrical equipment is high, the terminal execution unit is used to control the circuit breaker to perform power-off protection operation; By setting like this, 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. Then, by combining the change of the leakage current in the historical monitoring of the electrical equipment and analyzing the risk level of future leakage accidents of the electrical equipment based on the leakage current data of this leakage accident, the risk level of future leakage accidents of the electrical equipment can be predicted, so as to realize the early warning of high-risk leakage. And based on the leakage early warning to optimize the circuit leakage protection method, it can avoid the situation that the leakage current exceeds the leakage protection threshold by a large margin in the future.

[0022] The analysis process of the leakage analysis module includes: When a leakage accident occurs to the electrical equipment, the real-time monitoring module collects the leakage current data of this leakage accident, and defines the leakage current of this leakage accident of the electrical equipment as ; where i is any leakage accident of the electrical equipment; And define the leakage current of the i-th leakage accident of the electrical equipment as Compare it with a preset leakage current threshold ; If , the system determines that the risk of the i-th leakage accident is high, and issues an instruction to the terminal execution unit to control the circuit breaker to perform power-off protection operation; If , the system determines that the risk of the i-th leakage accident is low, and there is no need to perform power-off protection operations. Instead, it analyzes the risk level of future leakage accidents of the electrical equipment; Through the above technical solution, in this example, the leakage current of the i-th leakage accident of the electrical equipment is compared with the preset leakage current threshold . Through this comparison method, an accurate judgment can be made on the risk level of this leakage accident. When it is determined that the risk of this leakage accident is high, an instruction can be issued to the terminal execution unit, and the circuit breaker can be controlled by the terminal execution unit to perform power-off protection operations, thereby realizing the leakage protection of this leakage accident. When it is determined that the risk of this leakage accident is low, adaptive adjustment can be carried out. By analyzing the risk level of future leakage accidents of the electrical equipment, the circuit leakage protection method can be optimized.

[0023] The evaluation process of the data evaluation module includes: Calculating the true leakage current during the a-th leakage accident of the electrical equipment in the historical monitoring process through the formula ; ; where a is any leakage accident of the electrical equipment during the historical monitoring process, is the environmental humidity when the a-th leakage accident of the electrical equipment occurs during the historical monitoring process, is the preset environmental humidity, is the highest temperature of the electrical equipment when the a-th leakage accident of the electrical equipment occurs during the historical monitoring process, is the environmental temperature when the a-th leakage accident of the electrical equipment occurs during the historical monitoring process, is the preset influencing temperature, is the operating voltage value when the a-th leakage accident of the electrical equipment occurs during the historical monitoring process, is the preset operating voltage value, is the standard value of, and the above standard can be selected and set according to the allowable error in the empirical data, is a defined function. If , then let , otherwise, let , is the insulation resistance value when the a-th leakage accident of the electrical equipment occurs during the historical monitoring process, is the preset insulation resistance value, The leakage current during the a-th leakage accident of the electrical equipment in the historical monitoring process, and are weight coefficients, which are set according to empirical fitting, is an adjustment coefficient comparison table function, according to the empirical data Fitting and setting the influence degree of the value range of the numerical value on the true leakage current amount; Through the above technical solution, this example provides the true leakage current amount in the a-th leakage accident of the electrical equipment during the historical monitoring process , which can be obtained through the formula . Obviously, when the environmental humidity, the highest temperature of the electrical equipment, and the operating voltage value of the electrical equipment are larger during the a-th leakage accident of the electrical equipment in the historical monitoring process, and the insulation resistance is smaller when the a-th leakage accident of the electrical equipment occurs in the historical monitoring process, then the true leakage current amount in the a-th leakage accident of the electrical equipment in the historical monitoring process is smaller. On the contrary, when the environmental humidity, the highest temperature of the electrical equipment, and the operating voltage value are smaller when the a-th leakage accident of the electrical equipment occurs, and the insulation resistance is higher when the a-th leakage accident of the electrical equipment occurs in the historical monitoring process, then the true leakage current amount in the a-th leakage accident of the electrical equipment in the historical monitoring process is larger; The main reason is that when the environmental humidity is higher during the leakage accident, the conductivity of the leakage current is better, and when the highest temperature of the electrical equipment is higher, it will reduce the effect of the insulating material, thereby increasing the leakage current. The higher the operating voltage value of the electrical equipment represents an increase in the current amount in the electrical equipment circuit. On this basis, the leakage current amount will increase, and the reduction of the insulation resistance will directly compensate for the leakage current. Therefore, by combining diversified data, the leakage current amount when the a-th leakage accident of the electrical equipment occurs in the historical monitoring process can be corrected, so as to obtain the actual leakage current amount that is not affected by the external environment when the a-th leakage accident of the electrical equipment occurs, thereby providing diversified data support for the subsequent analysis of the risk level of future leakage accidents of the electrical equipment and ensuring the accuracy of the analysis results; It should be noted that any leakage accident of the electrical equipment during the historical monitoring process refers to any leakage accident during the period from the start of the leakage monitoring of the electrical equipment to before the i-th leakage accident occurs.

[0024] The evaluation process of the data evaluation module further includes: By combining the true leakage current amounts in all leakage accidents of the electrical equipment during the historical monitoring process , establishing a change curve of the true leakage current amount of the electrical equipment during the historical monitoring process ; And calculating the change amount of the true leakage current amount in all leakage accidents of the electrical equipment during the historical monitoring process through the formula ; ; Among them, For the first leakage accident of the electrical equipment during the historical monitoring process, For the last leakage accident of the electrical equipment during the historical monitoring process, For the total number of leakage accidents before the i-th leakage accident of the electrical equipment, For all The average value of; Through the above technical solution, this example provides the change amount of the true leakage current in all leakage accidents of the electrical equipment during the historical monitoring process , which can be obtained by the formula . Through this calculation method, first, by combining the true leakage currents in all leakage accidents of the electrical equipment during the historical monitoring process , a change curve of the true leakage current of the electrical equipment during the historical monitoring process is established , and a calculation model is established, then the change amount of the true leakage current in all leakage accidents of the electrical equipment during the historical monitoring process can be obtained . This data reflects the change of the leakage current in all leakage accidents of the electrical equipment during the historical monitoring process. And because this data is obtained by calculating based on diversified data, its accuracy and reliability are relatively 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 the leakage accidents, indicating that the electrical equipment has aging or faults. So, the risk of future leakage accidents can be estimated by combining this data with the leakage current of the i-th leakage accident of the electrical equipment, thus realizing the early warning of high-risk leakage accidents.

[0025] The evaluation process of the data evaluation module further includes: By assigning a value to the change amount of the true leakage current in all leakage accidents of the electrical equipment during the historical monitoring process , a weight value of the change amount of the true leakage current is generated, which is between 1 and 1.3 and increases as the change amount of the true leakage current in all leakage accidents of the electrical equipment during the historical monitoring process increases; Among them, the weight value of the change amount of the true leakage current corresponding to the change amount of the true leakage current in all leakage accidents of the electrical equipment during the historical monitoring process is set as ; Through the above technical solution, this example provides the assignment process of the change amount of the true leakage current in all leakage accidents of the electrical equipment during the historical monitoring process ; As an embodiment, the value range of the weight value of the change amount of the true leakage current is as follows; It should be noted that as the change amount of the true leakage current in all leakage accidents of the electrical equipment during the historical monitoring process increases, the corresponding weight value of the change amount of the true leakage current will increase synchronously. Specifically, the change amount of the true leakage current in all leakage accidents of the electrical equipment during the historical monitoring process can reflect the change trend of the true leakage current in all leakage accidents of the electrical equipment during the historical monitoring process. When the change amount of the true leakage current in all leakage accidents of the electrical equipment during the historical monitoring process is larger, it means that the leakage current of each leakage accident of the electrical equipment gradually increases with the increase of the leakage accidents, indicating that there is aging or malfunction in the use process of the electrical equipment. Therefore, based on the above situation, the weight value of the change amount of the true leakage current will increase with the increase of the change amount of the true leakage current in all leakage accidents of the electrical equipment during the historical monitoring process so as to provide accurate and reliable data for subsequent analysis of the risk of future leakage accidents and ensure the accuracy of the analysis results.

[0026] The analysis process of the intelligent analysis module includes: When it is determined that the risk of the i-th leakage accident is low; Through the formula calculate the estimated leakage current of the future leakage accident of the electrical equipment after the i-th leakage accident ; Among them, is a proportionality coefficient, set by empirical fitting, is the maximum value of all , is the minimum value of all ; Through the above technical solution, this example provides the estimated leakage current of the future leakage accident of the electrical equipment after the i-th leakage accident , which can be calculated through the formula . Among them, the weight value of the change amount of the true leakage current is even obtained based on diversified data calculation. Therefore, its accuracy and reliability are relatively high. And this example is based on the weight value of the change amount of the true leakage current and the leakage current of the i-th leakage accident of the electrical equipment to fuse high-quality data. Therefore, through this calculation method, the accurate calculation of the estimated leakage current of the future leakage accident of the electrical equipment after the i-th leakage accident can be realized, and this data can reflect the magnitude of the leakage risk of the electrical equipment in future leakage accidents, so as to realize risk early warning and avoid high-risk leakage accidents.

[0027] The analysis process of the intelligent analysis module further includes: By comparing the estimated leakage current of the electrical equipment in the future leakage accident after the i-th leakage accident with the preset leakage current threshold for comparison; If , the system determines that when the electrical equipment has a leakage accident in the future, the leakage current is high, which means that if a leakage accident occurs in the future, the possibility of high risk is higher, and an instruction is issued to the terminal execution unit to control the circuit breaker to perform power-off protection operation through the terminal execution unit; If , the system determines that when the electrical equipment has a leakage accident 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 operation; Through the above technical solution, in this embodiment, the estimated leakage current of the electrical equipment in the future leakage accident after the i-th leakage accident is compared with the preset leakage current threshold for comparison. Through this comparison method, it can be judged whether a leakage accident of the electrical equipment in the future is a high-risk accident, and when the possibility of a high-risk accident is higher, the circuit breaker is controlled by the terminal execution unit to perform power-off protection operation. By setting like this, it can optimize the circuit leakage protection method to avoid the occurrence of high-risk leakage accidents, and avoid the situation that the strong current directly causes the insulating material to overheat and burn, resulting in equipment damage or even endangering personal safety.

[0028] The control process of the terminal execution unit includes: When it is judged that the risk of the i-th leakage accident is high, the terminal execution unit is used to control the circuit breaker to perform power-off protection operation, and a fault warning is sent to the user by means of information or telephone; When it is judged that when the electrical equipment has a leakage accident in the future, the possibility of high risk is higher, the terminal execution unit is used to control the circuit breaker to perform power-off protection operation, and a maintenance warning is sent to the user by means of information or telephone; Through the above technical solution, this embodiment provides the control process of the terminal execution unit. When it is judged that the risk of the i-th leakage accident is high, the terminal execution unit is used to control the circuit breaker to perform power-off protection operation, and a fault warning is sent to the user by means of information or telephone. When it is judged that when the electrical equipment has a leakage accident in the future, the possibility of high risk is higher, the terminal execution unit is used to control the circuit breaker to perform power-off protection operation, and a maintenance warning is sent to the user by means of information or telephone; By setting it this way, not only can the terminal execution unit be used to control the circuit breaker to perform power-off protection operations in a timely manner and give a fault warning to remind the user when the risk of electric leakage accident of the electrical equipment is high, but also when it is judged that the possibility of high risk of electric leakage accident of the electrical equipment in the future is higher, the terminal execution unit can also be used to control the circuit breaker to perform power-off protection operations and give a maintenance warning to the user by means of information or telephone. By predicting future risks, the optimization of the circuit leakage protection method can be realized to ensure the normal operation of the electrical equipment.

[0029] The above has described an embodiment of the present invention in detail, but the content described is only a preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. An adaptive intelligent leakage protection system, characterized in that: The system comprises: A real-time monitoring module is 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 the operation data of the electrical equipment 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 according to 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 it is judged that the risk of the leakage accident is low; The intelligent analysis module is used to analyze the risk of future leakage accidents of the 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 power-off protection operation through the terminal execution unit when it is judged that the risk of the leakage accident is high or the risk of the leakage accident of the electrical equipment in the future is high.

2. The adaptive intelligent leakage protection system according to claim 1, characterized in that: The analysis process of the leakage analysis module includes: When a leakage accident occurs in an electrical device, the leakage current data of the leakage accident is collected through the real-time monitoring module, and the leakage current of the electrical device in this leakage accident is defined as ; Among them, 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 instructions 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.

3. The adaptive intelligent leakage protection system according to claim 2, characterized in that: 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 ath 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 of the electrical equipment occurred during the historical monitoring process, is the ambient temperature when the ath 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, For the preset insulation resistance, The leakage current when the a leakage accident of the electrical equipment occurred 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.

4. The adaptive intelligent leakage protection system according to claim 3 is characterized in that: 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, For all The average value of .

5. The adaptive intelligent leakage protection system according to claim 4, characterized in that: 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 values ​​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 historical monitoring The weight value of the change in the actual leakage current that increases with the increase; Among them, the change of the actual leakage current in all leakage accidents of electrical equipment during the historical monitoring process The corresponding weight value of the actual leakage current change is .

6. The adaptive intelligent leakage protection system according to claim 5, characterized in that: 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 proportionality coefficient, which is set according to empirical fitting. For all The maximum value in For all The minimum value in .

7. The adaptive intelligent leakage protection system according to claim 6, 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 instructions 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.

8. The adaptive intelligent leakage protection system according to claim 7, 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 circuit breaker is controlled by the terminal execution unit to perform power-off protection operation, and a fault warning is issued and pushed to the user through text messages or phone calls; When it is determined that electrical equipment will have a leakage accident in the future and the possibility of high risk is higher, the circuit breaker is controlled by the terminal execution unit to perform power-off protection operations, and a maintenance warning is made and pushed to the user via text message or telephone.

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