System for detecting ground fault of ungrounded circuit and operation method thereof

Abstract

The present invention relates to a system for detecting a ground fault of an ungrounded circuit and an operation method thereof. The system comprises: an electronic device including an ungrounded circuit; and a user terminal, wherein the electronic device includes: an insulation monitoring device (IMD) circuit that is disposed at one side of an ungrounded circuit path, and generates first measurement data on an insulation state of the circuit path; a residual current device (RCD) circuit that is disposed at the other side of the circuit part, and generates second measurement data on the presence or absence of a leakage current in the circuit path; and a circuit breaker that performs a breaking operation on the circuit path; and a communication circuit that transmits the first measurement data and the second measurement data to the user terminal, wherein the user terminal receives the first measurement data and the second measurement data from the electronic device, and outputs an alarm when an abnormality in the circuit part is identified on the basis of at least one of the first measurement data and the second measurement data.

Description

System for detecting ground fault in ungrounded circuit and method of operation thereof

[0001] The present invention relates to a system for detecting a ground fault in an ungrounded circuit using both an IMD (Insulation Monitoring Device) and an RCD (Residual Current Device, RCD), and an operating method thereof.

[0002] There are various methods for detecting ground faults in conventional ungrounded AC systems and ungrounded DC systems, and representative methods include Insulation Monitoring Devices (IMDs) and Residual Current Devices (RCDs).

[0003] Specifically, IMD injects a specific signal into the installed system and analyzes the fed-back signal to measure the insulation resistance of the system and determine whether a ground fault has occurred, while RCD measures the differential current of the wires supplying the load and determines that a ground fault has occurred if the differential current is not 0.

[0004] These IMDs have measurements that vary considerably depending on the various parasitic components of the system and the operation of the load, so they sometimes generate false alarms even when there is no actual ground fault. On the other hand, RCDs generate relatively fewer false alarms compared to IMDs, but they do not express the status of the system (insulation status between the circuit and the ground) in numbers, which makes them inconvenient to use.

[0005] Therefore, a method is needed to detect ground faults more accurately by comparing measurement data at the same time using both IMD and RCD.

[0006] Meanwhile, the matters described as background technology above are only intended to enhance understanding of the background of the present invention, and should not be taken as an acknowledgment that they correspond to prior art already known to those with ordinary skill in the art.

[0007] The present invention aims to solve the aforementioned problem by providing a system for detecting ground faults in an ungrounded circuit and an operating method thereof, which detects ground faults more accurately by comparing measurement data at the same point in time using both an IMD and an RCD.

[0008] The problems that the present invention seeks to solve are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

[0009] In a system including an electronic device including an ungrounded circuit according to various embodiments of the present disclosure, and a user terminal, the electronic device includes an IMD (Insulation Monitoring Devices) circuit located on one side of a circuit of the ungrounded circuit and generating first measurement data on an insulation state of the circuit, an RCD (Residual Current Devices) circuit located on the other side of the circuit and generating second measurement data on whether a leakage current exists in the circuit, a circuit breaker performing a blocking operation on the circuit, and a communication circuit transmitting the first measurement data and the second measurement data to the user terminal, wherein the user terminal receives the first measurement data and the second measurement data from the electronic device, and outputs an alarm when an abnormality in the circuit is identified based on at least one of the first measurement data and the second measurement data.

[0010] The user terminal according to various embodiments of the present invention can determine whether there is a ground fault in the electric circuit by comparing the first measurement data and the second measurement data based on the time at which the first measurement data and the second measurement data were generated.

[0011] The system according to various embodiments of the present invention may include a control device that controls a blocking operation of the circuit breaker for the circuit, and controls the communication circuit to transmit the first measurement data and the second measurement data to the user terminal in real time.

[0012] The electronic device according to various embodiments of the present invention may include a connection circuit for transmitting and receiving signals between the IMD circuit and the RCD circuit.

[0013] The electronic device according to various embodiments of the present invention includes a first control circuit that identifies a first measurement value based on a signal detected for the electric line through the IMD circuit, and the first control circuit receives a signal generated from the RCD circuit through the connection circuit to identify a second measurement value, and when a ground fault for the electric line is identified based on the first measurement value and the second measurement value, controls the circuit breaker to perform a cutoff of the electric line, and transmits, through the communication circuit, whether or not a ground fault for the electric line exists to the user terminal.

[0014] The electronic device according to various embodiments of the present invention includes a second control circuit that identifies a second measurement value based on a signal detected for the electric line through the RCD circuit, and the second control circuit receives a signal generated from the IMD circuit through the connection circuit to identify a first measurement value, and when a ground fault for the electric line is identified based on the first measurement value and the second measurement value, controls the circuit breaker to perform a cutoff of the electric line, and transmits, through the communication circuit, whether or not a ground fault for the electric line exists to the user terminal.

[0015] According to various embodiments of the present disclosure, when the electronic device includes a plurality of detection circuits of at least one of the IMD circuit and the RCD circuit, the electronic device identifies unique data including an identification number matching each of the plurality of detection circuits, a type of detection circuit, and a detection position on the electric line, and transmits a signal generated from each of the plurality of detection circuits to the user terminal by matching the unique data, and the user terminal, based on the signal matched to the unique data, when a first detection circuit that has detected an abnormality in the electric line is identified among the plurality of detection circuits, identifies at least one second detection circuit that has detected an abnormality in the electric line within a certain time from the time at which the first detection circuit is identified, and matches and stores the unique data of the first detection circuit and the unique data of the second detection circuit.

[0016] According to various embodiments of the present invention, the user terminal identifies location data for the position of the first detection circuit and the position of the second detection circuit, type data for the type of the first detection circuit and the type of the second detection circuit, and time data for the detection time of the first detection circuit and the detection time of the second detection circuit, respectively, and, based on the location data, if there is an area where the detection section of the first detection circuit and the detection section of the second detection circuit are adjacent or overlap, calculates a first score, and if there is an area where there is an overlapping area between the detection section of the first detection circuit and the detection section of the second detection circuit, calculates a first weight that is proportional to the path length of the overlapping area, and, based on the type data, if the types of the first detection circuit and the second detection circuit are the same, calculates a second weight for the same type, and, based on the time data, calculates a third weight that is inversely proportional to a difference value between the detection time of the first detection circuit and the detection time of the second detection circuit, and adds the first weight to the first score, A second score is calculated by applying a weight calculated from among the second weight and the third weight, and when the second score exceeds a threshold, the first detection circuit and the second detection circuit are stored as a trust group, and based on data for at least one previously stored trust group, whether the detection circuits that detected an abnormality in the electric circuit are faulty and the reliability of the measurement data can be calculated.

[0017] Other specific details of the invention are included in the detailed description and drawings.

[0018] The present invention aims to solve the aforementioned problem by providing a system for detecting ground faults in an ungrounded circuit and an operating method thereof, which detects ground faults more accurately by comparing measurement data at the same point in time using both an IMD and an RCD.

[0019] Figure 1 is a basic configuration diagram of a system according to an embodiment of the present invention.

[0020] Figures 2 to 4 are exemplary configuration diagrams of a communication circuit according to an embodiment of the present invention.

[0021] Figure 5 is a basic operation flowchart of a user terminal according to an embodiment of the present invention.

[0022] The above drawings are provided as examples to ensure that those skilled in the art can fully understand the concepts of the present invention. Therefore, the present invention is not limited to the drawings presented below and may be embodied in other forms.

[0023] Additionally, the same reference numbers throughout the specification represent the same components.

[0024] Additionally, it should be noted that in the above drawings, certain parts are enlarged or reduced without being drawn to scale to aid understanding.

[0025] In a system including an electronic device including an ungrounded circuit according to various embodiments of the present disclosure, and a user terminal, the electronic device includes an IMD (Insulation Monitoring Devices) circuit located on one side of a circuit of the ungrounded circuit and generating first measurement data on an insulation state of the circuit, an RCD (Residual Current Devices) circuit located on the other side of the circuit and generating second measurement data on whether a leakage current exists in the circuit, a circuit breaker performing a blocking operation on the circuit, and a communication circuit transmitting the first measurement data and the second measurement data to the user terminal, wherein the user terminal receives the first measurement data and the second measurement data from the electronic device, and outputs an alarm when an abnormality in the circuit is identified based on at least one of the first measurement data and the second measurement data.

[0026] The user terminal according to various embodiments of the present invention can determine whether there is a ground fault in the electric circuit by comparing the first measurement data and the second measurement data based on the time at which the first measurement data and the second measurement data were generated.

[0027] The system according to various embodiments of the present invention may include a control device that controls a blocking operation of the circuit breaker for the circuit, and controls the communication circuit to transmit the first measurement data and the second measurement data to the user terminal in real time.

[0028] The electronic device according to various embodiments of the present invention may include a connection circuit for transmitting and receiving signals between the IMD circuit and the RCD circuit.

[0029] The electronic device according to various embodiments of the present invention includes a first control circuit that identifies a first measurement value based on a signal detected for the electric line through the IMD circuit, and the first control circuit receives a signal generated from the RCD circuit through the connection circuit to identify a second measurement value, and when a ground fault for the electric line is identified based on the first measurement value and the second measurement value, controls the circuit breaker to perform a cutoff of the electric line, and transmits, through the communication circuit, whether or not a ground fault for the electric line exists to the user terminal.

[0030] The electronic device according to various embodiments of the present invention includes a second control circuit that identifies a second measurement value based on a signal detected for the electric line through the RCD circuit, and the second control circuit receives a signal generated from the IMD circuit through the connection circuit to identify a first measurement value, and when a ground fault for the electric line is identified based on the first measurement value and the second measurement value, controls the circuit breaker to perform a cutoff of the electric line, and transmits, through the communication circuit, whether or not a ground fault for the electric line exists to the user terminal.

[0031] According to various embodiments of the present disclosure, when the electronic device includes a plurality of detection circuits of at least one of the IMD circuit and the RCD circuit, the electronic device identifies unique data including an identification number matching each of the plurality of detection circuits, a type of detection circuit, and a detection position on the electric line, and transmits a signal generated from each of the plurality of detection circuits to the user terminal by matching the unique data, and the user terminal, based on the signal matched to the unique data, when a first detection circuit that has detected an abnormality in the electric line is identified among the plurality of detection circuits, identifies at least one second detection circuit that has detected an abnormality in the electric line within a certain time from the time at which the first detection circuit is identified, and matches and stores the unique data of the first detection circuit and the unique data of the second detection circuit.

[0032] According to various embodiments of the present invention, the user terminal identifies location data for the position of the first detection circuit and the position of the second detection circuit, type data for the type of the first detection circuit and the type of the second detection circuit, and time data for the detection time of the first detection circuit and the detection time of the second detection circuit, respectively, and, based on the location data, if there is an area where the detection section of the first detection circuit and the detection section of the second detection circuit are adjacent or overlap, calculates a first score, and if there is an area where there is an overlapping area between the detection section of the first detection circuit and the detection section of the second detection circuit, calculates a first weight that is proportional to the path length of the overlapping area, and, based on the type data, if the types of the first detection circuit and the second detection circuit are the same, calculates a second weight for the same type, and, based on the time data, calculates a third weight that is inversely proportional to a difference value between the detection time of the first detection circuit and the detection time of the second detection circuit, and adds the first weight to the first score, A second score is calculated by applying a weight calculated from among the second weight and the third weight, and when the second score exceeds a threshold, the first detection circuit and the second detection circuit are stored as a trust group, and based on data for at least one previously stored trust group, whether the detection circuits that detected an abnormality in the electric circuit are faulty and the reliability of the measurement data can be calculated.

[0033] Other specific details of the invention are included in the detailed description and drawings.

[0034] Various embodiments are now described with reference to the drawings. In this specification, various descriptions are provided to facilitate understanding of the present disclosure. However, it will be apparent that these embodiments can be practiced without these specific details.

[0035] As used herein, the terms "component," "module," "system," and the like refer to computer-related entities, hardware, firmware, software, a combination of software and hardware, or an execution of software. For example, a component may be, but is not limited to, a procedure running on a processor, a processor, an object, a thread of execution, a program, and / or a computer. For example, both an application running on an electronic device and the electronic device may be a component. One or more components may reside within a processor and / or a thread of execution. A component may be localized within a single computer. A component may be distributed between two or more computers. Furthermore, these components may execute from various computer-readable media having various data structures stored therein. Components may communicate via local and / or remote processes, for example, by signals comprising one or more data packets (e.g., data from one component interacting with another component in a local system, a distributed system, and / or data transmitted via signals to another system over a network such as the Internet).

[0036] Furthermore, the term "or" is intended to mean an inclusive "or" rather than an exclusive "or." That is, unless otherwise specified or clear from context, "X employs A or B" is intended to mean either of the natural inclusive permutations. That is, if X employs A; X employs B; or X employs both A and B, "X employs A or B" can apply to any of these cases. Furthermore, the term "and / or" as used herein should be understood to refer to and include all possible combinations of one or more of the associated items listed.

[0037] Additionally, the terms "comprises" and / or "comprising" should be understood to imply the presence of the features and / or components in question. However, it should be understood that the terms "comprises" and / or "comprising" do not exclude the presence or addition of one or more other features, components, and / or groups thereof. Furthermore, unless otherwise specified or clear from the context to refer to the singular form, the singular in the specification and claims should generally be construed to mean "one or more."

[0038] And, the term "at least one of A or B" should be interpreted to mean "if it includes only A", "if it includes only B", or "if it is combined in the composition of A and B".

[0039] Those skilled in the art should further appreciate that the various illustrative logical blocks, configurations, modules, circuits, means, logics, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, configurations, means, logics, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application. However, such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

[0040] The description of the disclosed embodiments is provided to enable those skilled in the art to make or use the disclosed embodiments. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be applied to other embodiments without departing from the scope of the disclosure. Therefore, the disclosure is not limited to the disclosed embodiments. The disclosure is to be construed in the broadest scope consistent with the principles and novel features disclosed herein.

[0041] In this paper, network function, artificial neural network and neural network can be used interchangeably.

[0042] The various embodiments described herein may be implemented in a recording medium and storage medium readable by a computer or similar device, for example, using software, hardware, or a combination thereof.

[0043] In terms of hardware implementation, the embodiments described herein can be implemented using at least one of ASICs (application specific integrated circuits), DSPs (digital signal processors), DSPDs (digital signal processing devices), PLDs (programmable logic devices), FPGAs (field programmable gate arrays), processors, controllers, micro-controllers, microprocessors, and other electrical units for performing functions. In some cases, the embodiments described herein can be implemented in the processor itself of an electronic device.

[0044]

[0045] Figure 1 is a basic configuration diagram of a system according to an embodiment of the present invention.

[0046] As illustrated in FIG. 1, in a system including an electronic device (100) including a non-grounded circuit according to various embodiments of the present invention, and a user terminal (200), the electronic device (100) includes an IMD (Insulation Monitoring Devices) circuit (110), an RCD (Residual Current Devices) circuit (120), a circuit breaker (130), and a communication circuit (140).

[0047] Specifically, the IMD circuit (110) is located on one side of the circuit of the ungrounded circuit and generates first measurement data on the insulation status of the circuit, and the RCD circuit (120) is located on the other side of the circuit and generates second measurement data on the presence or absence of leakage current in the circuit.

[0048] In addition, the circuit breaker (130) performs a circuit-breaker operation for the circuit when at least one of the IMD circuit (110) and the RCD circuit (120) detects a ground fault in the circuit, and the communication circuit (140) transmits the first measurement data and the second measurement data to the user terminal (200).

[0049] At this time, the measurement data, such as the first measurement data and the second measurement data, may include at least one of a signal generated by a detection circuit, such as an IMD circuit (110) and an RCD circuit (120), and information on the result of determining whether there is an abnormality in the electric circuit based on the signal.

[0050] Meanwhile, the user terminal (200) may include various electronic devices (100) such as the user's mobile terminal, laptop, or desktop.

[0051] The configuration of the user terminal (200) illustrated in Fig. 1 is merely a simplified example.

[0052] In one embodiment of the present invention, the user terminal (200) may include other components for performing the computing environment of the user terminal (200), and only some of the disclosed components may constitute the user terminal (200).

[0053] In one embodiment, the user terminal (200) may include at least one of a kiosk, a smartphone, a tablet personal computer, a desktop PC, a laptop PC, a netbook computer, a notebook computer, a server, a mobile medical device, a camera, a wearable device, and an AI speaker.

[0054] As illustrated in FIG. 1, the user terminal (200) may include a processor (210), a memory (220), and a communication module (230).

[0055] The processor (210) may be configured with one or more cores, and may include a processor (210) for data analysis and deep learning, such as a central processing unit (CPU), a general purpose graphics processing unit (GPGPU), and a tensor processing unit (TPU) of the user terminal (200). The processor (210) may read a computer program stored in the memory (220) and perform data processing for machine learning according to one embodiment of the present disclosure. In addition, the processor (210) may control the configuration of the user terminal (200) to operate, and may implement the operation of the overall system.

[0056] For example, the processor (210) can typically control the overall operation of the user terminal (200). The processor (210) can process signals, data, information, etc. input or output through the components discussed above, or can operate an application program stored in the memory (220) to provide or process appropriate information or functions to the user.

[0057] In addition, the processor (210) may control at least some of the components of the user terminal (200) to drive an application program stored in the memory (220). Furthermore, the processor (210) may operate at least two or more of the components included in the user terminal (200) in combination with each other to drive the application program.

[0058] According to one embodiment of the present invention, the processor (210) can perform operations for learning a neural network. The processor (210) can perform calculations for learning a neural network, such as processing input data for learning in deep learning (DL), extracting features from the input data, calculating errors, and updating the weights of the neural network using backpropagation. At least one of the CPU, GPGPU, and TPU of the processor (210) can process learning of the network function. For example, the CPU and GPGPU can together process learning of the network function and data classification using the network function.

[0059] According to one embodiment of the present invention, the memory (220) can store any type of information generated or determined by the processor (210) and any type of information received by the network unit. According to one embodiment of the present invention, the memory (220) can include at least one type of storage medium among a flash memory (220) type, a hard disk type, a multimedia card micro type, a card type memory (220) (e.g., an SD or XD memory (220)), a random access memory (RAM), a static random access memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory (220), a magnetic disk, and an optical disk. The user terminal (200) may also operate in relation to a web storage that performs the storage function of the memory (220) on the Internet. The description of the above-mentioned memory (220) is only an example, and the present invention is not limited thereto.

[0060] A communication module (230) that transmits wireless or wired signals to another device can perform communication with an external device, and in particular, the communication module (230) may include various communication chips such as a Wi-Fi chip, a Bluetooth chip, a wireless communication chip, an NFC chip, a low-power Bluetooth chip (BLE chip), etc., or may be configured with a communication circuit that performs such a function.

[0061] Additionally, although not shown, the user terminal (200) may include a display, which may include various displays and may include a touch screen display.

[0062]

[0063] Figures 2 to 4 are exemplary configuration diagrams of a communication circuit (140) according to an embodiment of the present invention.

[0064] As illustrated in FIG. 2, the communication circuit (140) may include at least one communication circuit among a first communication circuit (141) connected to or included in the IMD circuit (110), and a second communication circuit (142) connected to or included in the RCD circuit (120).

[0065] Additionally, although not shown, the system may include a control device that controls a circuit breaker (130) to operate a circuit breaker and a communication circuit (140) to transmit first measurement data and second measurement data to a user terminal (200) in real time.

[0066]

[0067] Meanwhile, as illustrated in FIGS. 3 and 4, the electronic device according to various embodiments of the present invention may include a connection circuit (150) that transmits and receives signals between an IMD circuit (110) and an RCD circuit (120).

[0068] At this time, the electronic device can control the communication circuit (140) and determine a ground fault of the electric circuit by performing the function of the control device through either the IMD circuit (110) or the RCD circuit (120).

[0069] Specifically, as illustrated in FIG. 3, when the electronic device includes a first control circuit (161) that identifies a first measurement value based on a signal detected for the circuit through the IMD circuit (110), the first control circuit (161) can receive a signal generated from the RCD circuit (120) through the connection circuit (150) to identify a second measurement value.

[0070] Accordingly, the first control circuit (161) can control the circuit breaker (130) to cut off the circuit when a ground fault is identified for the circuit based on the first measurement value and the second measurement value, and can transmit information about whether or not a ground fault for the circuit exists to the user terminal (200) through the first communication circuit (141).

[0071] On the other hand, as illustrated in FIG. 4, if the electronic device includes a second control circuit (162) that identifies a second measurement value based on a signal detected for the circuit through the RCD circuit (120), the second control circuit (162) can identify the first measurement value by receiving a signal generated from the IMD circuit (110) through the connection circuit (150).

[0072] Accordingly, the second control circuit (162) controls the circuit breaker (130) to cut off the circuit when a ground fault is identified for the circuit based on the first measurement value and the second measurement value, and transmits information about whether a ground fault has occurred for the circuit to the user terminal (200) through the communication circuit (140).

[0073] At this time, the measured value may be a value in which a signal generated by a detection circuit such as an IMD circuit (110) and an RCD circuit (120) is converted into a digital signal by a control circuit such as a first control circuit (161) and a second control circuit (162).

[0074] According to FIGS. 3 and 4, the electronic device (100) can also serve as an integrated controller that determines a ground fault in a power line through one of the IMD circuit (110) and the RCD circuit (120) without using an upper monitoring system, a user terminal (200), etc.

[0075] Meanwhile, the electronic device (100) can provide an alarm without using communication by outputting the measurement results using DI (Digital Input) and DO (Digital Output) within the electronic device (100), including the display.

[0076]

[0077] Figure 5 is a basic operation flowchart of a user terminal (200) according to an embodiment of the present invention.

[0078] As illustrated in FIG. 5, the user terminal (200) receives first measurement data and second measurement data from an electronic device (S510), and if an abnormality in the electric circuit is identified (S520) based on at least one of the first measurement data and the second measurement data, an alarm is output (S530).

[0079] The user terminal (200) according to various embodiments of the present invention can determine whether or not there is a ground fault in the power line by comparing the first measurement data and the second measurement data based on the time at which the first measurement data and the second measurement data were generated.

[0080] Meanwhile, the electronic device according to various embodiments of the present invention may include a plurality of detection circuits, at least one of the IMD circuit (110) and the RCD circuit (120).

[0081] When the electronic device (100) includes a plurality of detection circuits, unique data including an identification number matching each of the plurality of detection circuits, a type of detection circuit, and a detection position on the circuit can be identified.

[0082] Accordingly, the electronic device (100) can match signals generated from each of the plurality of detection circuits to unique data and transmit them to the user terminal (200).

[0083] Thereafter, the user terminal (200) can identify the first detection circuit that has detected an abnormality in the electric circuit among the plurality of detection circuits based on a signal matched to the unique data.

[0084] At this time, when the first detection circuit is identified, the user terminal (200) can identify at least one second detection circuit that has detected an abnormality in the electric circuit within a certain period of time from the time the first detection circuit is identified, and match and store the unique data of the first detection circuit and the unique data of the second detection circuit.

[0085] Meanwhile, the user terminal (200) can identify location data for the location of the first detection circuit and the location of the second detection circuit, type data for the type of the first detection circuit and the type of the second detection circuit, and time data for the detection time of the first detection circuit and the detection time of the second detection circuit, respectively.

[0086] Accordingly, the user terminal (200) can calculate a first score based on the location data when the detection section of the first detection circuit and the detection section of the second detection circuit are adjacent or have overlapping areas.

[0087] Once the first score is calculated, the user terminal (200) can calculate a weight to be applied to the first score according to each condition.

[0088] Specifically, if there is an overlapping area between the detection section of the first detection circuit and the detection section of the second detection circuit, the user terminal (200) can calculate a first weight that is proportional to the path length of the overlapping area.

[0089] Based on the type data, if the types of the first detection circuit and the second detection circuit are the same, the user terminal (200) can calculate a second weight for the same type.

[0090] Additionally, the user terminal (200) can calculate a third weight that is inversely proportional to the difference between the detection time of the first detection circuit and the detection time of the second detection circuit based on the time point data.

[0091] Accordingly, the user terminal (200) calculates a second score by applying a weight calculated from among the first weight, the second weight, and the third weight to the first score, and at this time, if the second score exceeds a threshold, the first detection circuit and the second detection circuit are stored as a trust group, thereby updating data for at least one previously stored trust group.

[0092] Thereafter, the user terminal (200) can calculate whether the detection circuits that detected an abnormality in the electric circuit are faulty and the reliability of the measurement data based on the data for the trust group.

[0093] As an example, the electronic device (100) may include a test circuit that outputs a test current for each section of the circuit.

[0094] Specifically, in performing a test through a test circuit, the electronic device (100) may receive a request for a detection performance test of a user terminal or perform a test on at least one of a plurality of detection circuits at regular intervals.

[0095] At this time, the user terminal (200) can control the electronic device (100) to perform a test by selecting a section for outputting a test current based on data about the trust group.

[0096] When the user terminal (200) selects a section, the user terminal (200) can identify, based on data about the trust group, at least one first trust group among a plurality of trust groups, in which at least one of the first weight and the third weight matched to the trust group exceeds a threshold weight.

[0097] Next, the user terminal (200) identifies a second trust group in which the configuration of the detection circuit is identically stored a certain number of times or more among the first trust groups, and when the second trust group is identified, it can identify at least one duplicate circuit included in the plurality of second trust groups.

[0098] When a duplicate circuit is identified, the user terminal (200) can store multiple second trust groups including the duplicate circuit as one third trust group, and select a detection section matching the third trust group as a section for outputting a test current.

[0099] If a duplicate circuit is not identified, the user terminal (200) can generate a map of detection sections matching the second trust groups for the circuit based on the detection sections matched to each of the second trust groups, and select a non-overlapping area between different second trust groups as a section for outputting a test current based on the map.

[0100] At this time, the user terminal (200) can determine whether the detection circuits are faulty based on whether the detection circuits included in the second trust group matching the area selected as the section for outputting the test current detect a ground fault.

[0101] In addition, as an example, if a fourth trust group is generated among multiple trust groups in which the configuration of the detection circuit is stored identically a certain number of times or more, the user terminal (200) can calculate the average, standard deviation, and variance values ​​of the second scores matched to the fourth group, and calculate a reliability inversely proportional to the variance value.

[0102] At this time, reliability can be expressed as a %, but is not limited to this.

[0103] If the reliability exceeds the threshold value, the user terminal (200) can store the fourth group as a regular reliability group, whereas if the reliability is below the threshold value, the fourth group can be stored as an irregular reliability group.

[0104] Accordingly, the user terminal (200) can, when selecting the first trust group, select the first trust group from among the trust groups stored as regular trust groups, thereby selectively testing a group with high reliability of detection results among a plurality of detection circuits that equally detect anomalies in the electric circuit under certain conditions, thereby increasing the reliability of the test results.

[0105]

[0106] Those skilled in the art will appreciate that the various illustrative logical blocks, modules, processors, means, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, various forms of programs or design code (referred to herein, for convenience, as software), or a combination of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Those skilled in the art may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

[0107] The various embodiments presented herein can be implemented as a method, apparatus, or article of manufacture using standard programming and / or engineering techniques. The term article of manufacture includes a computer program, carrier, or media accessible from any computer-readable storage device. For example, computer-readable storage media include, but are not limited to, magnetic storage devices (e.g., hard disks, floppy disks, magnetic strips, etc.), optical disks (e.g., CDs, DVDs, etc.), smart cards, and flash memory devices (e.g., EEPROMs, cards, sticks, key drives, etc.). Furthermore, various storage media presented herein include one or more devices and / or other machine-readable media for storing information.

[0108] It should be understood that the specific order or hierarchy of steps in the presented processes is merely an example of exemplary approaches. It should be understood that the specific order or hierarchy of steps in the processes may be rearranged within the scope of the present disclosure based on design priorities. The appended method claims provide elements of various steps in a sample order, but are not intended to be limited to the specific order or hierarchy presented.

[0109] The description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the disclosed embodiments. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of the disclosure. Therefore, the disclosure is not intended to be limited to the disclosed embodiments, but is to be construed in the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. In an electronic device including a non-grounded circuit and a system including a user terminal, The above electronic device: An IMD (Insulation Monitoring Devices) circuit located on one side of the circuit of the above ungrounded circuit and generating first measurement data on the insulation status of the circuit; An RCD (Residual Current Devices) circuit located on the other side of the circuit and generating second measurement data on the presence of leakage current in the circuit; A circuit breaker performing a blocking operation on the above circuit; and Including a communication circuit that transmits the first measurement data and the second measurement data to the user terminal, The above user terminal: Receiving the first measurement data and the second measurement data from the electronic device; If an abnormality is identified in the electric circuit based on at least one of the first measurement data and the second measurement data, an alarm is output. System.

2. In paragraph 1, The above user terminal: Based on the time at which the first measurement data and the second measurement data were generated, the first measurement data and the second measurement data are compared to determine whether there is a ground fault in the electric circuit. System.

3. In paragraph 1, The system comprises a control device that controls the circuit breaker's blocking operation for the circuit, and controls the communication circuit to transmit the first measurement data and the second measurement data to the user terminal in real time. System.

4. In paragraph 1, The above electronic device, Including a connection circuit for transmitting and receiving signals between the IMD circuit and the RCD circuit. System.

5. In paragraph 4, The electronic device comprises a first control circuit that identifies a first measurement value based on a signal sensed for the circuit through the IMD circuit; The above first control circuit: Through the above connection circuit, a signal generated from the RCD circuit is received to identify the second measurement value; Based on the first measurement value and the second measurement value, if a ground fault is identified for the circuit, the circuit breaker is controlled to perform a circuit breakage; Through the above communication circuit, whether or not there is a ground fault in the above power line is transmitted to the user terminal. System.

6. In paragraph 4, The electronic device comprises a second control circuit for identifying a second measurement value based on a signal detected for the circuit through the RCD circuit; The second control circuit: Through the above connection circuit, a signal generated from the IMD circuit is received to identify a first measurement value; Based on the first measurement value and the second measurement value, if a ground fault is identified for the circuit, the circuit breaker is controlled to perform a circuit breakage; Through the above communication circuit, whether or not there is a ground fault in the above power line is transmitted to the user terminal. System.

7. In paragraph 2, The above electronic device: In the case where the detection circuits of the IMD circuit and the RCD circuit are included in multiple numbers, unique data including an identification number matching each of the multiple detection circuits, a type of the detection circuit, and a detection position on the electric circuit are identified; The signals generated from each of the above plurality of detection circuits are matched to unique data and transmitted to the user terminal, The above user terminal: Based on a signal matched to the above unique data, when a first detection circuit that has detected an abnormality in the electric path among the plurality of detection circuits is identified, at least one second detection circuit that has detected an abnormality in the electric path is identified within a certain time from the time at which the first detection circuit is identified; Matching and storing the unique data of the first detection circuit and the unique data of the second detection circuit, System.

8. In paragraph 7, The above user terminal: Identifying position data for the position of the first detection circuit and the position of the second detection circuit, type data for the type of the first detection circuit and the type of the second detection circuit, and timing data for the detection timing of the first detection circuit and the detection timing of the second detection circuit, respectively; Based on the above location data, if there is an adjacent or overlapping area between the detection section of the first detection circuit and the detection section of the second detection circuit, a first score is calculated; If there is an overlapping area between the detection section of the first detection circuit and the detection section of the second detection circuit, a first weight proportional to the path length of the overlapping area is calculated; Based on the above type data, if the types of the first detection circuit and the second detection circuit are the same, a second weight for the same type is calculated; Based on the above time point data, a third weighting factor is calculated that is inversely proportional to the difference between the detection time points of the first detection circuit and the detection time points of the second detection circuit; A second score is calculated by applying a weight calculated from among the first weight, the second weight, and the third weight to the first score; If the second score exceeds the threshold, the first detection circuit and the second detection circuit are stored as a trust group; Based on data for at least one previously stored trust group, whether the detection circuits that detected the abnormality of the electric circuit are faulty and the reliability of the measurement data is calculated. System.

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