KR-102964431-B1 - SYSTEM AND METHOD FOR DIAGNOSIS OF ELECTRICAL FACILITIES USING ULTRASOUND VISUALIZATION

KR102964431B1KR 102964431 B1KR102964431 B1KR 102964431B1KR-102964431-B1

Abstract

The present invention relates to a power equipment diagnostic system and diagnostic method using ultrasonic visualization, which visualizes ultrasonic signals received from power equipment to be diagnosed to check for abnormalities in power equipment. A power equipment diagnostic system using ultrasonic visualization according to the present invention comprises: a diagnostic unit (21) mounted on a mobile body (1) and acquiring image data and an ultrasonic sound source from a power equipment to be diagnosed, and converting the ultrasonic sound source into an ultrasonic heat map; a memory (26) in which information acquired through the diagnostic unit (21) is stored, and logic and a database necessary for diagnosing the power equipment are stored; and a control unit (27) that receives the information acquired by the diagnostic unit (21), diagnoses the power equipment using the logic and database stored in the memory (26), and controls the operation of the diagnostic unit (21). The diagnostic unit (21) transmits image data of the power equipment, an ultrasonic sound source acquired from the power equipment, and the ultrasonic heat map to the control unit (27), and the control unit (27) recognizes the power equipment from the image data and diagnoses whether there is an abnormality in the power equipment using a pre-stored logic.

Inventors

남승현
김민기
박준형
조재형
이상록

Assignees

한국전력공사

Dates

Publication Date: 20260513
Application Date: 20220822

Claims (20)

A diagnostic unit mounted on a mobile body, acquiring image data and an ultrasonic sound source from a power facility to be diagnosed, and converting the ultrasonic sound source into an ultrasonic heatmap; A memory in which information obtained through the above diagnostic unit is stored, and logic and a database necessary for diagnosing the power equipment are stored; and A control unit that receives information acquired by the diagnostic unit, diagnoses the power equipment using the logic stored in the memory and the database, and controls the operation of the diagnostic unit; Includes, The diagnostic unit transmits image data of the power equipment, an ultrasonic sound source obtained from the power equipment, and an ultrasonic heatmap to the control unit, and The control unit recognizes the power equipment from the image data and diagnoses whether there is an abnormality in the power equipment using pre-stored logic, and When the control unit diagnoses an abnormality in the power equipment, it stores a diagnosis result including the type of power equipment, environmental information at the time of diagnosis, numerical values of abnormal components, and data patterns in the memory. The diagnostic results are stored and history managed in the above memory by week and path, and The system further includes a display that displays information including the status of the diagnostic unit, information acquired by the diagnostic unit, and the results of the diagnosis of the power equipment by the control unit. The above display is, The above diagnostic unit includes a current screen area displaying image data currently being captured, a previous screen area displaying previously captured image data, an equipment setting area displaying the status of the diagnostic unit and operation commands entered by the diagnostician, and a diagnostic result display area displaying diagnostic results for the power equipment by the control unit. Power equipment diagnostic system using ultrasonic visualization characterized by
In paragraph 1, It further includes a driving unit that controls the direction in which the above diagnostic unit is directed, and The above diagnostic unit is mounted on the movable body via the above driving unit. Power equipment diagnostic system using ultrasonic visualization characterized by
In paragraph 2, The above driving unit tilts and pans the diagnostic unit so that the diagnostic unit faces the power equipment. Power equipment diagnostic system using ultrasonic visualization characterized by
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In paragraph 1, It further includes a sensor unit that detects the temperature and humidity around the moving body, the location of the moving body, and the distance between the moving body and the power equipment, and outputs these to the control unit. Power equipment diagnostic system using ultrasonic visualization characterized by
In paragraph 1, A diagnostician inputs an operation command to operate the diagnostic unit and further includes an operation unit that outputs the operation command to the control unit. Power equipment diagnostic system using ultrasonic visualization characterized by
In paragraph 1, The above control unit recognizes the power equipment based on deep learning applying a YOLO (You Only Look Once) model to the image data. Power equipment diagnostic system using ultrasonic visualization characterized by
In paragraph 1, The above control unit diagnoses the power equipment by using an LSTM (Long Short-Term Memory) neural network to detect abnormal components contained in the ultrasonic sound source after analyzing the time-series characteristics of the ultrasonic sound source. Power equipment diagnostic system using ultrasonic visualization characterized by
In paragraph 1, The above control unit removes noise included in the ultrasonic sound source and lightens the ultrasonic sound source using a heterodyne technique before analyzing the ultrasonic sound source for the diagnosis of the power equipment. Power equipment diagnostic system using ultrasonic visualization characterized by
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In paragraph 1, The above diagnostic system further includes a battery that supplies power. Power equipment diagnostic system using ultrasonic visualization characterized by
In paragraph 1, The above diagnostic system receives power from the above-mentioned mobile body. Power equipment diagnostic system using ultrasonic visualization characterized by
A diagnosis initiation step of moving a moving body to a point where the power equipment to be diagnosed is located, orienting a diagnosis unit toward said power equipment, and beginning to acquire image data by photographing said power equipment; An object detection step in which a control unit recognizes the power equipment from image data acquired by the diagnostic unit and sets a diagnostic area among the power equipment; Ultrasonic reception step in which the above diagnostic unit acquires an ultrasonic sound source from the above power facility; An anomaly detection step in which the control unit detects an abnormal component included in the ultrasonic sound source and generates a trigger; and A trigger storage step for storing the above trigger and the state at the time the trigger occurs; comprising, The above object detection step is, The control unit sets the surrounding area recognized as the power equipment as a diagnostic area, which is a bounding box, and the area set as the bounding box is displayed on the display. Diagnostic results are stored and history managed in memory by week and path, and Information including the status of the diagnostic unit, information acquired by the diagnostic unit, and the result of the diagnosis of the power equipment by the control unit is displayed on the display, and The above display is, A method for diagnosing power equipment using ultrasonic visualization, characterized by including a current screen area for displaying image data currently being captured by the diagnostic unit, a previous screen area for displaying previously captured image data, an equipment setting area for displaying the status of the diagnostic unit and operation commands input by the diagnostician, and a diagnostic result display area for displaying diagnostic results for the power equipment by the control unit.
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In Paragraph 14, The above object detection step is, Finally recognizing the diagnostic area in the power equipment based on deep learning applying the YOLO (You Only Look Once) model to the above image data. A method for diagnosing power equipment using ultrasonic visualization characterized by
In Paragraph 14, The above object detection step is, A diagnostician manually sets the diagnostic area as a bounding box using a control panel, and the area set as the bounding box is displayed on the display. A method for diagnosing power equipment using ultrasonic visualization characterized by
In Paragraph 14, The above ultrasonic receiving step is, A method for diagnosing power equipment using ultrasonic visualization, characterized by being performed when the distance between the diagnostic unit and the power equipment is within a predetermined distance.
In Paragraph 14, In the above ultrasonic reception step, the received ultrasonic sound source is visualized as an ultrasonic heatmap and transmitted to the control unit, and the control unit stores the ultrasonic sound source and the ultrasonic heatmap. A method for diagnosing power equipment using ultrasonic visualization characterized by
In Paragraph 14, Between the above ultrasonic reception step and the above abnormality detection step, The method further includes a preprocessing step of removing noise included in the ultrasonic sound source, lightweighting the ultrasonic sound source and ultrasonic heatmap using a heterodyne technique, and augmenting the ultrasonic sound source data. A method for diagnosing power equipment using ultrasonic visualization characterized by

Description

System and Method for Diagnosis of Electric Facilities Using Ultrasonic Visualization The present invention relates to a power equipment diagnostic system and diagnostic method using ultrasonic visualization, which visualizes ultrasonic signals received from power equipment to be diagnosed to check for abnormalities in power equipment. Power transmission and distribution facilities must be inspected periodically to ensure stable transmission and distribution. For example, in power distribution lines using utility poles, power equipment such as suspension insulators and transformers used to install overhead lines on the poles must be inspected. To this end, conventionally, a diagnostician accessed and inspected the aforementioned power equipment using an aerial work platform. Recently, ultrasonic equipment, thermal imaging equipment, and optical equipment are being used to direct the aforementioned equipment from the ground toward the aforementioned power facility for inspection. However, the inspection method using equipment also had the problem of reduced diagnostic accuracy, as the presence or absence of abnormalities was determined based on the diagnostician's experience. For example, when using ultrasound equipment, the diagnostician determines whether there is an abnormality in the ultrasound sound received by the ultrasound equipment based on their experience, which lowers the accuracy of the diagnosis and leads to different diagnostic results depending on the diagnostician. Although the ultrasound sound can be displayed as an image and diagnosed based on it, there was a problem of reduced diagnostic accuracy because it still relied on the diagnostician's experience. In particular, since it relies on the diagnostician's experience, it is difficult to distinguish between noise and abnormal signals included in the received signal, and there is a problem in that environmental factors such as temperature, humidity, and distance are not taken into account. This caused the aforementioned problems, as the diagnostician diagnosed the information received by each device based on their experience, even in the case of thermal imaging or optical amplification equipment. In addition, since the diagnostician rides in the vehicle and moves, stops at a utility pole, gets out, or uses the equipment while their body is exposed outside the vehicle, there was a problem of taking a long time for the diagnosis and being exposed to traffic accidents. FIG. 1 is a schematic diagram illustrating a state in which a diagnostic unit is mounted on a vehicle, which is one of the mobile bodies. FIG. 2 is a block diagram illustrating a power equipment diagnostic system using ultrasonic visualization according to the present invention. FIG. 3 is a schematic diagram illustrating an example of a user interface (UI) of a power equipment diagnostic system using ultrasonic visualization according to the present invention. FIG. 4 is a flowchart illustrating a method for diagnosing power equipment using ultrasonic visualization according to the present invention. FIG. 5 is a schematic diagram illustrating the state of detecting a diagnostic area by a power facility diagnostic system and diagnostic method using ultrasonic visualization according to the present invention. FIG. 6 is a schematic diagram illustrating an example of detecting a diagnostic area by a YOLO model in a power facility diagnostic system and diagnostic method using ultrasonic visualization according to the present invention. FIG. 7 is a schematic diagram illustrating the state of setting a diagnostic area by a power equipment diagnostic system and diagnostic method using ultrasonic visualization according to the present invention. FIG. 8 is a schematic diagram illustrating the state of processing ultrasonic signals by a power facility diagnostic system and diagnostic method using ultrasonic visualization according to the present invention. FIGS. 9a to 9c are schematic diagrams illustrating the state of detecting abnormal components by a power equipment diagnostic system and diagnostic method using ultrasonic visualization according to the present invention. FIG. 10 is a schematic diagram illustrating an example of data stored when a trigger occurs by a power facility diagnostic system and diagnostic method using ultrasonic visualization according to the present invention. FIG. 11 is a schematic diagram illustrating the state of updating the point where an abnormality occurred by the power facility diagnostic system and diagnostic method using ultrasonic visualization according to the present invention. The power equipment diagnostic system and diagnostic method using ultrasonic visualization according to the present invention will be described in detail below with reference to the attached drawings. A power equipment diagnostic system (20) using ultrasonic visualization according to the present invention comprises: a diagnostic unit (21) mounted on a mobile body (1) and ac