A method for identifying false start of a leakage detection terminal, a leakage detection method and a leakage detection system

Abstract

The application discloses a kind of electric leakage detection terminal misoperation identification method, electric leakage detection method and electric leakage detection system, electric leakage detection system includes electric leakage detection terminal, mobile terminal and system main station;Electric leakage detection terminal starts after, system main station passes through the electric leakage data of electric leakage detection terminal and the test information of marking mobile terminal establishment, whether electric leakage detection terminal is misoperation, finally executes automatic shutdown.The implementation of this function, not only can effectively prevent electric leakage detection terminal from battery damage caused by misoperation, while avoiding the waste of system resources and traffic waste caused by the communication of electric leakage detection terminal and system main station in non-test state.It can also be applied to production inspection process, such as after starting full inspection, it is not necessary to manually shut down each terminal, the system automatically judges and executes shutdown, reduces production and inspection process, improves work efficiency.

Description

Technical Field

[0001] This invention belongs to the field of Internet of Things monitoring technology, specifically relating to a method for identifying accidental power-on of a leakage current detection terminal, a leakage current detection method, and a leakage current detection system. Background Technology

[0002] With the deep integration of IoT technology into various industries, various platform-based remote monitoring devices have emerged. For example, a leakage current detection terminal system, mainly composed of a leakage current detection terminal and a system master station, is a typical application of IoT technology. This type of system is primarily used for troubleshooting leakage current in power lines, and its key feature is that the terminal can monitor online for extended periods, uploading data to a remote master station.

[0003] In the application of such systems, leakage current detection terminals inevitably encounter some invalid power-on and invalid online situations. For example, during training, trainees may attempt to power on the leakage current detection terminal but fail to power it off; outside of testing, users may unintentionally power on the leakage current detection terminal and forget to power it off; or it may be accidentally powered on during transportation. These situations cause the leakage current detection terminal to continuously exchange data with the system master station until the terminal's battery is depleted, resulting in battery damage and wasted system resources. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides a method for identifying accidental power-on of a leakage current detection terminal, which can accurately determine whether the powered-on leakage current detection terminal is in an accidental power-on state that is not intended for testing.

[0005] The technical solution of the present invention is: a method for identifying accidental power-on of a leakage current detection terminal, comprising:

[0006] S1. Obtain the power-on information of the leakage current detection terminal. If the leakage current detection terminal is powered on, proceed to step S2.

[0007] S2. Obtain leakage current data detected by the leakage current detection terminal when it is powered on;

[0008] S3. If the leakage current data detected by the leakage current detection terminal is 0, then it is determined that the leakage current detection terminal is in a state of accidental power-on.

[0009] Preferably, the leakage data includes leakage data corresponding to multiple consecutive events without leakage. If the leakage data corresponding to multiple consecutive events without leakage are all 0, then the leakage detection terminal is determined to be in a false power-on state.

[0010] Alternatively, the leakage data may include leakage data after multiple events without leakage. If the leakage data after multiple events without leakage is 0, then the leakage detection terminal is determined to be in a false power-on state.

[0011] As a preferred option, it also includes:

[0012] Step S4: If the already powered-on leakage current detection terminal is in an erroneous powered-on state, send a command to the erroneously powered-on leakage current detection terminal to shut it down.

[0013] The present invention also provides a system for identifying accidental power-on of a leakage current detection terminal, comprising:

[0014] The transformer area working module acquires the leakage current data packets uploaded by the powered-on leakage current detection terminals and parses the leakage current data packets.

[0015] The leakage current reading module, based on the parsing result of the leakage current data packet parsing by the transformer area working module, will automatically read the leakage current data of the corresponding powered-on leakage current detection terminal if there is no leakage current event.

[0016] The accidental power-on detection module determines whether the device is in an accidental power-on state based on the leakage current data of the powered-on leakage current detection terminal read by the leakage current reading module.

[0017] The shutdown command module, based on the judgment result of the erroneous power-on judgment module, sends a shutdown command to the leakage current detection terminal that is in the erroneous power-on state to shut it down.

[0018] Preferably, the transformer substation working module includes:

[0019] The default home module is used to store the power-on information of powered-on leakage current detection terminals;

[0020] The designated home module receives the power-on information of the powered-on leakage current detection terminals stored in the default home module, based on the corresponding name information, character number information, or address information of the powered-on leakage current detection terminals.

[0021] The present invention also provides a leakage current detection terminal, including a body, the body comprising:

[0022] The power-on module is used to start the machine's operation.

[0023] The leakage current acquisition module collects leakage current data from the node under test.

[0024] The clock module is used to record time factors;

[0025] The data parsing module receives leakage current data collected by the leakage current acquisition module and time factor input by the clock module. If the device is in an accidental power-on state, it triggers a power-off command.

[0026] The automatic shutdown module receives the shutdown command from the data parsing module and shuts down the machine.

[0027] The leakage current acquisition module in this invention can be of various types, and any existing structural form can be adopted. Preferably, the leakage current acquisition module is a current transformer, and the data information acquired by the current transformer is uploaded to the data parsing module. The current transformer converts the analog leakage current value into digital leakage current through A / D conversion and uploads it to the data parsing module.

[0028] The present invention also provides a leakage current detection system with a function for identifying accidental power-on, comprising:

[0029] The leakage current detection terminal includes a leakage current acquisition module for collecting leakage current data and a power on / off module for turning the leakage current detection terminal on and off.

[0030] The system master station is communicatively connected to the leakage current detection terminal and includes an identification system for erroneous power-on of the leakage current detection terminal as described in any one of claims 4 to 5.

[0031] Preferably, the system also includes a mobile terminal that is connected to the system master station. The mobile terminal includes an information establishment module for establishing test information of the powered-on leakage current detection terminal. The test information established by the information establishment module is stored in the substation work module of the system master station as one of the conditions for judging false power-on.

[0032] After the leakage current detection terminal described in this invention is powered on, the system master station determines whether the leakage current detection terminal has been mistakenly powered on by reading the leakage current data of the leakage current detection terminal and the test information established by the marked mobile terminal, and finally executes automatic shutdown.

[0033] The leakage current detection terminal's power-on / off module powers on the terminal and connects to the system master station via a communication module. It also shuts down the terminal upon receiving a power-off command from the master station. The leakage current acquisition module collects leakage current data from the tested node, serving as one of the criteria for detecting erroneous power-on. When the powered-on leakage current detection terminal detects leakage current data >0mA, it indicates that the terminal is undergoing valid testing. When the powered-on leakage current detection terminal does not detect any leakage current data (i.e., the leakage current value is 0), it indicates that the terminal is not undergoing testing.

[0034] The mobile terminal is connected to the system master station via a communication module; the information establishment module is used to establish test information for the powered-on leakage current detection terminal and store it in the substation work module of the system master station, and also serves as one of the conditions for judging erroneous power-on.

[0035] The system master station establishes connections with the leakage current detection terminal and the mobile terminal through a communication module. The transformer area working module also includes a default home module and a designated home module. The default home module is used to store information of powered-on leakage current detection terminals that have not established test information by the mobile terminal. The designated home module is created by the mobile terminal and stores information of powered-on leakage current detection terminals. The leakage current reading module reads the leakage current data of powered-on leakage current detection terminals according to the reading conditions. The reading conditions are the judgment conditions for the leakage current reading module to automatically start reading. The false power-on judgment module is used to mark powered-on leakage current detection terminals stored in the default home module as false power-on under the first condition, and to mark leakage current data with a value of 0 read from powered-on leakage current detection terminals by the leakage current reading module as false power-on under the second condition. When both the first and second conditions are met, the false power-on judgment module judges the powered-on leakage current detection terminal as false power-on. The power-off command module is used to execute a remote power-off command on the false power-on judgment module to judge the false power-on leakage current detection terminals as false power-on.

[0036] The present invention also provides a leakage current detection method with a false power-on detection function, comprising:

[0037] H. After powering on, the leakage current detection terminal accesses the system main station and uploads data packets;

[0038] I. After receiving the power-on information of the leakage current detection terminal, the system master station stores the information of the powered-on leakage current detection terminal in the default home module.

[0039] J. When the mobile terminal establishes the affiliation of the specified powered-on leakage current detection terminal information, the powered-on leakage current detection terminal information is moved from the default affiliation module of the system master station to the specified affiliation module.

[0040] K. The leakage current reading module of the system master station will perform leakage current event parsing on the leakage current data packets uploaded by the powered-on leakage current detection terminals stored in the default home module, and perform leakage current data reading on the powered-on leakage current detection terminals without leakage current events.

[0041] L. The system master station's error-on judgment module will judge powered-on leakage detection terminals stored in the default assigned module and with leakage data of 0 as error-on terminals.

[0042] M. The shutdown command module of the system master station sends the shutdown command to the faulty power-on judgment module and the faulty power-on leakage detection terminal.

[0043] N. The powered-on leakage current detection terminal receives the shutdown command issued by the system master station and executes the shutdown.

[0044] Preferably, the leakage event is leakage data exceeding a preset threshold of the leakage detection terminal. For example, if the preset leakage event threshold is 20mA, then when the leakage data detected by the powered-on leakage detection terminal is less than 20mA, the uploaded leakage data packet will not contain the leakage event.

[0045] In this invention, the attribution of information for powered-on leakage current detection terminals includes name attribution, number attribution, and address attribution. Specifically, a mobile terminal is used to establish the name, character number, or address information of the test node for a powered-on leakage current detection terminal. Inputting any one of these pieces of information satisfies the attribution establishment condition. This type of operation is intentional; the operator may be learning certain functions of the leakage current detection terminal, mobile terminal, or system master station. Although no actual testing is performed, it is still a conscious act, thus eliminating the possibility of accidental power-on detection.

[0046] Compared with the prior art, the beneficial effects of the present invention are reflected in:

[0047] This invention, through data analysis from the system master station, can effectively determine whether a powered-on leakage current detection terminal is in a falsely powered-on state outside of testing, and remotely control the shutdown of the falsely powered-on leakage current detection terminal. This function not only effectively prevents battery damage caused by false power-on of the leakage current detection terminal, but also avoids the waste of system resources and bandwidth caused by communication between the non-testing leakage current detection terminal and the system master station. It can also be applied to production inspection processes; for example, after a full power-on inspection, there is no need to manually shut down each terminal; the system automatically determines and executes the shutdown, reducing production and inspection steps and improving work efficiency. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of the leakage current detection terminal module for identifying accidental power-on in this invention.

[0049] Figure 2 This is a schematic diagram of the station area module of the system master station in this invention.

[0050] Figure 3 This is a schematic diagram illustrating the judgment conditions for the leakage current detection terminal to be turned on accidentally in this invention.

[0051] Figure 4 This is a schematic diagram of the frame structure of the leakage current detection terminal in this invention.

[0052] Figure label:

[0053] 1. Power-on module; 2. Leakage current acquisition module; 3. Clock module; 4. Data parsing module; 5. Automatic power-off module. Detailed Implementation

[0054] like Figure 1As shown, a leakage current detection terminal for identifying accidental power-on includes a leakage current detection terminal, a mobile terminal, and a system master station.

[0055] Furthermore, the leakage current detection terminal includes a communication module, a power-on / off module, and a leakage current acquisition module. The power-on / off module powers on the leakage current detection terminal and connects to the system master station via the communication module. Communication methods can include 4G, 5G, NB, or other mainstream communication methods. The leakage current power-on / off module also acts as the system master station's shutdown command execution module, powering off the leakage current detection terminal upon receiving a shutdown command from the system master station. The leakage current acquisition module collects leakage current data from the tested node and uploads it to the system master station via the communication module. Leakage current data also serves as one of the conditions for judging false power-on. When the powered-on leakage current detection terminal detects leakage current data >0mA, it indicates that the leakage current detection terminal is in valid testing; when the powered-on leakage current detection terminal does not detect any leakage current data, i.e., the leakage current value is 0, it indicates that the leakage current detection terminal is not in testing. Because the leakage current detection terminal is installed on the L and N circuit lines of the low-voltage distribution area, and in the actual environment, the current in the L and N distribution circuits cannot be absolutely balanced to zero. The leakage current detected by the leakage current detection terminal is the unbalanced current of the L and N circuits. Therefore, as long as the leakage current detection terminal is installed on the distribution circuit line, it will definitely be able to collect leakage current data >0. If there is no leakage current data, it means that the leakage current detection terminal is not installed on the distribution line for testing, which can be used as one of the judgment conditions for accidental power-on. On the other hand, from the design perspective of zero-sequence current transformers, there will inevitably be error values ​​after the zero-sequence current transformer is manufactured. For example, differences in raw materials, number of coil turns, coil resistance, and upper and lower mating surfaces of the left and right half-rings of the transformer will all lead to errors. This error value refers to the unbalanced current detected by the transformer under the condition of absolute balance of L and N line currents. This is equivalent to the leakage current detection terminal being tested in an actual power distribution line. Even if the L and N line currents are absolutely balanced, it will still generate an error current of at least >0. This also shows that the leakage current detection terminal should not be judged as a false start during the test. On the contrary, it can be used as one of the conditions for judging false start.

[0056] Furthermore, the mobile terminal includes a communication module and an information establishment module. The communication module is used for communication connection with the system master station, and the communication method can also adopt 4G, 5G, NB, or other mainstream communication methods. The information establishment module is used to establish test information for the powered-on leakage current detection terminal, such as the name information, character number information, or address information of the test node, etc., and upload it to the system master station and save it in the substation work module of the system master station as one of the conditions for judging false power-on. Because as long as the operator inputs any of the information for the powered-on leakage current detection terminal, it can be said that the operator is consciously operating it. At this time, the operator may be learning some functions of the leakage current detection terminal, mobile terminal, or system master station, etc. Although there is no actual test, it is still a conscious behavior, so the judgment of false power-on is exempted. Of course, if the device has not been operated for a long time after such operation, it can also be judged by whether the leakage current data is 0 and then automatically shut down. This method is a further implementation of the solution of the present invention, which will not be described in detail here, but its technical implementation method is the same and should also fall within the protection scope of the present invention.

[0057] Furthermore, the system master station includes a communication module, a transformer area operation module, a leakage current reading module, a false power-on detection module, and a power-off command module. The system master station establishes connections with the leakage current detection terminal and the mobile terminal through the communication module. For example... Figure 2 As shown, the transformer substation working module also includes a default home module and a designated home module. The default home module is used to store information on powered-on leakage current detection terminals that have not established test information on the mobile terminal. That is, after the leakage current detection terminal is powered on, the system master station only detects the online information of the device, but does not detect any other human operation information. The system master station then saves the device number information of the leakage current detection terminal in the default home module of the transformer substation working module. The designated home module is created by the mobile terminal and specifies the storage of powered-on leakage current detection terminal information. That is, the mobile terminal can input specified information for powered-on leakage current detection terminals, such as name information, character number information, or address information. After inputting any of these pieces of information, the device number information of the leakage current detection terminal is automatically stored in the designated home module. The leakage current reading module reads leakage current data from powered-on leakage current detection terminals according to reading conditions. These conditions are the criteria for the module to automatically initiate reading. When a leakage current detection terminal is powered on, it uploads a data packet containing leakage current events at regular intervals. A threshold can be set for each leakage current event; for example, a threshold of 20mA will be included in the data packet containing leakage current data exceeding 20mA and uploaded to the system master station. The leakage current reading module then parses this data packet. If the data packet uploaded by a powered-on leakage current detection terminal within the default home module does not contain a leakage current event, the automatic reading function is activated, reading the leakage current data from the powered-on leakage current detection terminals within the default home module. For example... Figure 3 As shown, the false power-on detection module marks powered-on leakage current detection terminals stored in the default home module as a first condition for false power-on, and marks powered-on leakage current detection terminals with a value of 0 stored in the default home module as a second condition for false power-on. The marking of the second condition can be set as needed to read several consecutive 0 value data. When both the first and second conditions are met, the false power-on detection module determines that the powered-on leakage current detection terminal is falsely powered on. The power-off command module is used to execute a remote power-off command on the leakage current detection terminals determined by the false power-on detection module to be falsely powered on.

[0058] like Figures 1-3 As shown, in order to further explain the method of judging and shutting down the leakage current detection terminal for accidental power-on, the following steps are described.

[0059] A. When the leakage current detection terminal is powered on via the power-on / off module, it connects to the system master station via the communication module and uploads the power-on information. The power-on information includes the device number, time, and other necessary information. Subsequently, it uploads the corresponding data packets to the system master station at regular intervals. The data packets contain leakage events, time, device number, and other information.

[0060] B. After receiving the power-on information of the leakage current detection terminal, the system master station stores the device number and other information of the powered-on leakage current detection terminal in the default home module of the transformer area module.

[0061] C. At this time, the mobile terminal can establish the affiliation of the specified powered-on leakage current detection terminal information through the information establishment module. For example, the corresponding name information, character number information or address information can be entered. As long as any of these information is entered, the powered-on leakage current detection terminal information will be automatically moved from the default affiliation module of the system main station to the specified affiliation module.

[0062] D. The leakage current reading module of the system master station will parse the leakage current data packets uploaded by the powered-on leakage current detection terminals stored in the default home module. If no leakage current event is found when parsing the leakage current data packets, the leakage current data of the corresponding powered-on leakage current detection terminals will be automatically read.

[0063] E. The system master station's error-on detection module marks the powered-on leakage current detection terminal stored in the default home module as the first judgment condition for error-on; when the leakage current reading module reads the leakage current data of the leakage current detection terminal in the default home module and the value is 0, which can be either several consecutive leakage current events corresponding to leakage current data readings of 0 values, or a single leakage current data reading of 0 value after several leakage current events, the powered-on leakage current detection terminal is judged as the error-on. When both the first and second conditions are met, the powered-on leakage current detection terminal is judged as the error-on.

[0064] F. When the system master station's error-on judgment module determines that a certain leakage current detection terminal that has been turned on is mistakenly turned on, the system master station's shutdown command module will send a shutdown command to the power-on / off module of the mistakenly turned-on leakage current detection terminal.

[0065] G. When the power-on / off module of the already powered-on leakage current detection terminal receives the power-off command issued by the system master station, it will power off the already powered-on leakage current detection terminal.

[0066] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A leakage current detection method with accidental power-on detection function, characterized in that, include: After powering on, the leakage current detection terminal accesses the system's main station and uploads data packets; After receiving the power-on information from the leakage current detection terminal, the system master station stores the information of the powered-on leakage current detection terminal in the default home module; When the mobile terminal establishes the affiliation of the specified powered-on leakage current detection terminal information, the powered-on leakage current detection terminal information is moved from the default affiliation module of the system master station to the specified affiliation module. The leakage current reading module of the system master station will parse the leakage current data packets uploaded by the powered-on leakage current detection terminals stored in the default home module, and read the leakage current data for powered-on leakage current detection terminals without leakage current events. The system master station's error-on detection module will identify powered-on leakage detection terminals stored in the default assigned module and with leakage data of 0 as error-on terminals. The shutdown command module of the system master station sends the shutdown command to the erroneous power-on judgment module and the erroneous power-on leakage detection terminal. The powered-on leakage current detection terminal received a shutdown command from the system master station and executed the shutdown.

2. The leakage current detection method with accidental power-on identification function according to claim 1, characterized in that, The leakage event is leakage data that exceeds the preset threshold of the leakage detection terminal.

3. The leakage current detection method with accidental power-on detection function according to claim 1, characterized in that, The establishment of the information attribution for the powered-on leakage current detection terminal includes attribution by name, number, and address.

4. A leakage current detection system with accidental power-on detection function, characterized in that, The system uses the leakage current detection method with accidental power-on identification function as described in claim 1, including: Leakage current detection terminal; The system master station is communicatively connected to the leakage current detection terminal; The mobile terminal is connected to the system master station. The mobile terminal includes an information establishment module for establishing test information of the powered-on leakage current detection terminal. The test information established by the information establishment module is stored in the substation work module of the system master station as one of the conditions for judging false power-on.

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