KR20190115672A - Diagnostic equipment for electrical power facilities using detecting ultrasonic waves and diagnostic method for electrical power facilities using the same - Google Patents

Abstract

Provided is a power equipment diagnostic apparatus for diagnosing power equipment by detecting ultrasonic waves, which comprises a main body, a picture camera, an ultrasonic sensor array, and a display unit. The picture camera is disposed at the front end of the main body to photograph the power equipment to generate a picture image. The ultrasonic wave sensor array is each configured with ultrasonic wave sensors detecting ultrasonic waves emitted from the power equipment to be disposed in the front end of the main body, and is arranged around the picture camera about the picture camera. The display unit is disposed at the rear end of the main body, and displays an image for detection in which an ultrasonic image in which an emitting position and information of intensity of the detected ultrasonic waves are imaged is overlaid on the picture image of the power equipment.

Description

DIAGNOSTIC EQUIPMENT FOR ELECTRICAL POWER FACILITIES USING DETECTING ULTRASONIC WAVES AND DIAGNOSTIC METHOD FOR ELECTRICAL POWER FACILITIES USING THE SAME}

The present invention relates to a diagnostic equipment for diagnosing a power equipment and a method for diagnosing a power equipment using the same, and more particularly, a diagnostic equipment for diagnosing a power equipment using ultrasonic waves detected from the power equipment, and a power equipment using the same. It is about how to diagnose.

As power equipment such as insulators, lightning arresters, and electric wires are used after being exposed to the outdoor for a long time, deterioration occurs due to the effects of electric field, current, temperature change, humidity change, and sunlight. In particular, as the deterioration progresses, cracks are generated inside, and moisture penetrates into the cracks, and contaminants penetrate therein as the wet state and the dry state are repeated to generate conductive paths. It is concentrated and microdischarge is generated. Microdischarge causes electrical and mechanical vibrations to discharge discharge energy by electromagnetic waves, ultrasonic waves, sound, etc., and thus, when the discharge energy is detected in the power equipment upside down, deterioration of the power equipment can be progressed.

As a method of diagnosing deterioration of a power equipment based on the above-described principle, there is a method of converting ultrasonic waves, which are abnormal signals of a power equipment, into an audible frequency band, and directly listening to the operator to determine whether there is a defect in the power equipment. However, this diagnostic method is dependent on the hearing of the worker to reduce the hearing of the worker, the deviation of the defect diagnosis rate is generated for each individual, there is a problem that the diagnostic procedure is complicated and time-consuming.

An object of the present invention is to provide a power equipment diagnostic equipment that improves the work efficiency can be easily diagnosed by the operator to check whether there is an abnormality of the power equipment.

Another object of the present invention to provide a diagnostic method that can more easily diagnose the power equipment using the above-described diagnostic equipment.

In the power equipment diagnostic equipment for detecting the power equipment by diagnosing ultrasonic waves, the power equipment diagnostic equipment for achieving the above object of the present invention includes a main body, an image camera, an ultrasonic sensor array, and a display unit.

The image camera is disposed at the front end of the main body to photograph the power equipment to generate an image image. The ultrasonic sensor array is composed of ultrasonic sensors, each of which is configured to sense the ultrasonic waves emitted from the power equipment is disposed in the front end of the main body, the ultrasonic sensor array is arranged around the image camera around the image camera do.

The display unit is disposed at the rear end of the main body. In addition, the display unit displays an image for detection in which an ultrasound image in which information of the detected position and intensity of the ultrasound is imaged is overlaid on an image image of the power equipment.

In one embodiment of the invention, the image camera is disposed in the center of the front end of the main body.

In one embodiment of the present invention, when the main body is viewed from the front, the ultrasonic sensor array is radially arranged around the image camera.

In one embodiment of the present invention, the front end portion of the main body in which the ultrasonic sensor array and the image camera are disposed has a flat shape.

In one embodiment of the present invention, the width of the front end of the main body is greater than the width of the rear end of the main body.

In an embodiment of the present invention, the main body includes a signal converter, and the signal converter converts a sensing signal output from the ultrasonic sensor array into a digital signal.

In one embodiment of the present invention, the main body further includes a data processing unit for receiving the digital signal from the signal conversion unit for processing the digital signal.

In one embodiment of the invention, the power equipment diagnostic equipment further comprises a speaker coupled to the body. The signal converter converts the ultrasonic waves sensed from the ultrasonic sensor array into sound waves in an audible frequency band, and outputs the sound waves as sounds from the speaker.

In an embodiment, the data processor generates the ultrasound image by calculating the emission position and intensity of the ultrasound using the digital signal, and the data processor overlays the ultrasound image on the image image. Create an image for detection.

In one embodiment of the present invention, the power equipment diagnostic equipment further includes handle parts located at the rear end of the main body.

In one embodiment of the present invention, when viewed from the rear of the main body, the display portion is located between the handle portions.

In one embodiment of the present invention, the main body includes a battery unit, the battery unit provides a power source used to drive the ultrasonic sensor array, the image camera and the display unit.

In one embodiment of the present invention, the main body further includes a memory unit, and the memory unit stores the detection image displayed on the display unit.

In order to achieve the above object of the present invention, a method of diagnosing power equipment by detecting ultrasonic waves is as follows. An image camera generates an image image of the power facility. The emission position of the ultrasonic wave and the emission intensity of the ultrasonic wave are sensed by the ultrasonic sensor array arranged around the image camera around the image camera to generate a sensing signal. The sensing signal is converted into a digital signal by a signal converter. The digital signal is calculated by the data processor to generate an ultrasound image in which the emission position of the ultrasound and the emission intensity of the ultrasound are imaged. The data processor generates an image for detection using the ultrasound image and the image image. The detection image is displayed through a display unit.

In one embodiment of the present invention, the data processor generates the image for detection by overlaying the image image on the ultrasound image.

In one embodiment of the present invention, the ultrasonic wave sensed from the ultrasonic sensor array by the signal converter further comprises the step of converting the sound waves in the audible frequency range, the sound waves are output from the speaker as a sound.

In one embodiment of the present invention, the power equipment diagnostic equipment is composed of a main body, a display portion disposed in the rear end of the main body and the handle portion located in the rear end of the main body, the front end of the main body of the image camera and the An ultrasonic sensor array is arranged, and stares at the display while holding the handles.

According to the present invention, the operator can directly diagnose a power facility by visually confirming a detection image in which an ultrasound image overlaid with ultrasound information emitted from the power facility is imaged on an actual image image of the object. Thus, the operator can very easily identify the location where the discharge is occurring in the power facility and take action on the object.

The power equipment diagnostic apparatus according to the present invention is configured to be easy to carry by the operator, the front end portion of the diagnostic equipment is an ultrasonic sensor array radially arranged around the image camera and the image camera to improve the sensing sensitivity of the ultrasonic sensor array. have. In addition, handles are provided at both sides of the rear end of the main body, and a display unit is positioned between the handles. Therefore, the operator can continuously stare at the display unit while holding the diagnostic equipment, thereby improving the work efficiency of diagnosis of the power equipment using the diagnostic equipment.

1 is a perspective view of a power equipment diagnostic apparatus according to an embodiment of the present invention.
2 is a front view of the power equipment diagnostic equipment.
3 is a rear view of the power equipment diagnostic equipment.
4 is a view for explaining the components constituting the main body shown in FIG.
FIG. 5 is a block diagram illustrating a data processing process of components of the diagnostic apparatus illustrated in FIG. 1.
Figure 6a is a photograph showing the ultrasound image generated by the diagnostic equipment.
6B is a photographic view showing an image image generated by the diagnostic device.
Figure 6c is a photograph showing a detection image generated by the diagnostic equipment.

Hereinafter, the most preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the technical idea of the present invention. . First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a perspective view of a power equipment diagnostic equipment 500 according to an embodiment of the present invention, Figure 2 is a front view of the power equipment diagnostic equipment 500, Figure 3 is a rear view of the power equipment diagnostic equipment 500, 4 is a view for explaining the components constituting the main body 100 shown in FIG.

1, 2, 3 and 4, the power equipment diagnostic equipment 500 (hereinafter referred to as "diagnosis equipment") is a portable equipment for diagnosing a defect of the power equipment.

The principle of diagnosing a defect of a power facility by the diagnostic device 500 according to the present invention is as follows. In general, when high voltage abnormalities such as arc discharge, short circuit, and ground fault occur in the power equipment, the insulation of the surrounding air is partially destroyed by the high voltage abnormality, so that the surrounding air molecules are disturbed and the ultrasonic waves, light, and noise Corona discharge may occur. In this case, when the operator places the diagnostic equipment 500 toward the power facility, the ultrasound image representing the intensity of the ultrasound and the actual image image of the power facility are generated by matching each other with the emission position of the ultrasonic waves detected from the power facility. By using the detected detection image, the presence or absence of a defect in the power equipment can be easily diagnosed.

Hereinafter, the structure of the diagnostic equipment 500 according to an embodiment of the present invention.

The diagnostic equipment 500 includes a main body 100, an image camera 30, an ultrasonic sensor array 15, a speaker 140, and a display unit 150.

The main body 100 includes a housing 110, handles 50 and 51, an image camera 30, an ultrasonic sensor array 15, a signal converter 200, a data processor 300, a battery 160, and The memory unit 170 is included.

The housing 110 provides a storage space for storing the components of the main body 100. Handles 50 and 51 are located at the rear end of the main body 100, the operator can handle the diagnostic equipment 500 by holding the handles (50, 51).

In this embodiment, the handles 50 and 51 may be coupled to the rear end of the main body 100 so as to correspond one-to-one to both sides of the main body 100, and each of the handles 50 and 51 may have a main body. It may be defined in the central portion of the bracket 55 to connect the top of the 100 and the bottom. In this embodiment, the handles 50 and 51 have the above-described structure, but the present invention is not limited to the structure of the handles 50 and 51 described above. For example, in another embodiment, each of the handle parts 50 and 51 may have a shape extending from a rear end of the main body 100 and extending away from the main body 100.

The image camera 30 is disposed in front of the main body 100, and the image camera 30 generates an image image by photographing a power facility to be diagnosed. In this embodiment, the image camera 30 may be disposed at the center of the front end of the main body 100, and the image camera 30 uses a power sensor using an image sensor such as a charge coupled device (CCD) like a digital camera. Create an image of the image. The image image generated by the image camera 30 may be stored in the memory unit 170 in a data manner.

The ultrasonic sensor array 15 is configured by the arrangement of ultrasonic sensors 10 each of which senses ultrasonic waves, and the ultrasonic sensor array 15 is arranged in front of the main body 100 so as to emit ultrasonic waves from a power facility to be diagnosed. Detect it.

As shown in FIG. 2, when the main body 100 is viewed from the front, the ultrasonic sensor array 15 may be arranged around the image camera 30 around the image camera 30. In this embodiment, the ultrasonic sensor array 15 may be arranged radially about the image camera 30. Further, in this embodiment, the ultrasonic sensor array 15 is arranged radially about the image camera 30, while the ultrasonic sensor array 15 is arranged radially along the helical direction, and thus the ultrasonic sensor array 15 ) Effectively increases the area for sensing the ultrasonic wave, so that the sensing sensitivity of the ultrasonic sensor array 15 may be improved.

However, the present invention is not limited to the arrangement of the ultrasonic sensor array 15. For example, in another embodiment, the ultrasonic sensor array 15 may be arranged radially along a curved direction different from the linear direction or the spiral direction.

Meanwhile, as shown in FIG. 4, in this embodiment, the front end of the main body 100 in which the ultrasonic sensor array 15 and the image camera 30 are mounted in the main body 100 may have a flat shape. In addition, the width of the front end of the main body 100 may be greater than the width of the rear end of the main body 100 in which the data processing unit 300, the battery unit 160, and the memory unit 170 are accommodated. Therefore, the sensitivity for detecting the ultrasound of the diagnostic device 500 can be improved by sufficiently securing the area in which the ultrasonic sensor array 15 is mounted in the diagnostic device 500, and the volume of the main body 100 is relatively reduced. Portability of the diagnostic device 500 may be facilitated.

The signal converter 200 converts an analog sensing signal output in response to the ultrasonic waves detected by the ultrasonic sensor array 15 into a digital signal. In this embodiment, the signal converter 200 may include a printed circuit board and circuit components mounted thereon, and the printed circuit board may process an analog signal output from the ultrasonic sensor array 15 in the data processor. It may be a DAQ board (Data Acquisition Board) to convert to a digital signal. Also, a power supply circuit unit for supplying power to the ultrasonic sensor array 15 and the image camera 30 on the DAQ board, an analog to digital converter (ADC) chip for converting an analog signal into a digital signal, and an ultrasonic sensor array 15 Circuit components such as an amplifying circuit unit for amplifying an analog signal outputted from) may be mounted to implement the signal converter 200.

The data processor 300 is disposed between the signal converter 200 and the display unit 150 and is electrically connected to the signal converter 200 by the first flexible printed circuit board 180. The data processor 300 receives the digital signal converted by the signal converter 200 and processes the digital signal. As a result, the data processor 300 calculates the emission position and the intensity of the ultrasonic waves sensed by the ultrasonic sensor array 15 through the processing process, and the data processor 300 emits the ultrasonic waves as a result of the processing. The location and intensity are imaged to produce an ultrasound image (A1 in FIG. 6A).

The battery unit 160 is housed inside the housing 110, and in this embodiment, the battery unit 160 is a power supply circuit unit (not shown) of the data processing unit 300 through the second flexible printed circuit board 175. And may be electrically connected with.

The battery unit 160 provides power used to drive the diagnostic device 500. As described above, the diagnostic equipment 500 according to this embodiment has a structure that can carry the diagnostic equipment 500 while the worker moves, the battery unit 160 is the operator to the diagnostic equipment 500 The power supply is provided so that the diagnostic device 500 can be driven while carrying.

The memory unit 170 is electrically connected to the data processor 300 through the third flexible printed circuit board 310. The memory unit 170 is displayed on the display unit 150 by overlaying the ultrasound image (A1 of FIG. 6A) generated by the data processor 300 on the image image (A2 of FIG. 6B) generated by the image camera 30. The detection image (A3 in Fig. 6C) is stored. In this embodiment, the memory unit 170 may store the detection image (A3 of FIG. 6C) in a media format or a data format.

The display unit 150 is positioned at the rear end of the main body 100, and the display unit 150 is electrically connected to the data processing unit 300 through the fourth flexible printed circuit board 190. In addition, the display unit 150 receives the data signals generated through the above-described processing of the data processing unit 300 and displays a detection image (A3 of FIG. 6C) of the power equipment to be diagnosed. Therefore, the operator can directly identify the intensity of the ultrasonic wave from which part from the power equipment through the detection image (A3 in FIG. 6C), so that the operator can use the vision to identify the broken portion in the power equipment. It can be detected intuitively.

In this embodiment, when viewed from the back of the main body 100, the display portion 150 may be located between the handle portions (50, 51). Therefore, the operator can continuously stare at the display unit 150 after holding the handles 50 and 51 with both hands.

In this embodiment, the display unit 150 may be a flat panel display panel that displays a color image such as a liquid crystal display panel or an organic light emitting diode display panel.

The speaker 140 is coupled to the body 100, and in this embodiment, the speaker 140 may be located at the rear end of the body 100. In this embodiment, the above-described signal converter 200 may convert the ultrasonic waves sensed from the ultrasonic sensor array 15 into sound waves in the audible frequency range, and in this case, the speaker 140 outputs the sound waves as sounds. do. Accordingly, the operator gazes at the detection image (A3 of FIG. 6C) through the display unit 150 and simultaneously listens to the sound waves output through the speaker 140, thereby making it easier to diagnose the power equipment. have.

FIG. 5 is a block diagram illustrating a data processing process of components of the diagnostic apparatus 500 illustrated in FIG. 1, FIG. 6A is a photographic view illustrating an ultrasound image generated by the diagnostic apparatus, and FIG. 6B is generated by the diagnostic apparatus. Fig. 6C is a photograph showing a detection image generated by the diagnostic equipment.

Referring to FIG. 5, the ultrasonic sensor array 15 detects ultrasonic waves emitted from a power facility to be diagnosed. As a result, the analog sensing signal 17 generated by the sensing process of the ultrasonic sensor array 15 is provided to the signal converter 200.

The image camera 30 photographs a power facility to be diagnosed to generate a data signal 35 associated with the image image A2. As a result, the data signal 35 generated by the imaging process of the image camera 30 is provided to the data processing unit 300 side.

The signal converter 200 converts the analog sensing signal 17 received from the ultrasonic sensor array 15 into a digital signal 18. In this signal conversion process, the signal conversion unit 200 may perform a filtering process and an amplification process on the received sensing signal 17 to facilitate the above-described signal conversion process. The digital signal 18 generated by the signal converter 200 is provided to the data processor 300.

In this embodiment, the signal converter 200 may convert the ultrasonic waves sensed from the ultrasonic sensor array 15 into sound waves in the audible frequency band, and the sound waves may be output as sound through the speaker 140.

The data processor 300 collects the image image 35 generated by the image camera 30 and the digital signal 18 generated by the signal converter 200. The data processor 300 generates the ultrasound image A1 by computing the digital signal 18 provided from the signal converter 200 to image the emission position of the ultrasound and the intensity of the ultrasound.

In this embodiment, the data processor 300 generates the ultrasound image A1 by calculating the emission position of the ultrasound and the intensity of the ultrasound by using a beam-forming method. More specifically, as shown in FIG. 2, the delay-and-sum of time of the ultrasonic signals measured through the ultrasonic sensor array 15 arranged in two dimensions is calculated to calculate the ultrasonic signals. The location of the sound source to emit can be estimated.

For example, a phase delay does not occur in a sound source incident in the vertical direction of the array of the ultrasonic sensor arrays (15 of FIG. 1), but when it is incident at an angle, phase delay of a signal incident to each ultrasonic sensor from the reference ultrasonic sensor occurs. do. In this case, the delay time can be measured to calculate the incident angle of the sound source of the ultrasonic wave by using the following equation.

(Mathematical formula) a = d * sinθ / c

In the above equation, a is a time delay value between the reference ultrasonic sensor and each ultrasonic sensor, θ is the incident angle of the ultrasonic sound source, d is the arrangement interval of the ultrasonic sensors, and c is the propagation speed of the ultrasonic sound source (340 m / sec). . The θ value of the ultrasonic sound source may be calculated using the actually measured a value in Equation 1, and the position and intensity of the ultrasonic sound source may be calculated through this.

Meanwhile, as described above, when the data processing is completed from the data processing unit 300, the ultrasound emission position and the intensity information of the ultrasound on the object may be imaged to generate the ultrasound image A1. Different colors are displayed according to the intensity of the ultrasound emitted from the ultrasound image A1. In the embodiment shown in FIG. have.

The data processor 300 implements the image image A2 using the data signal 35 provided from the image camera 30, overlays the ultrasound image A1 on the image image A2, and detects the photograph A3. Create

Therefore, the operator can visually confirm the positions of the ultrasonic waves emitted from the object and the intensity of the ultrasonic waves emitted at each position in the actual image image of the object which can be directly identified by using the photograph A3 for detection. The operator can very easily identify the location where the discharge is relatively high in the object and take action on the object.

Although a preferred embodiment according to the present invention has been described above, modifications can be made in various forms, and those skilled in the art may make various modifications and modifications without departing from the claims of the present invention. It is understood that it may be practiced.

10: ultrasonic sensor 15: ultrasonic sensor array
30: image camera 50: handle
100: main body 110: housing
160: battery unit 170: memory unit
150: display unit 200: signal conversion unit
300: data processing unit 500: diagnostic equipment
A1: Ultrasound Image A2: Burn Image
A3: Image for Detection

Claims (17)

In the power equipment diagnostic equipment for detecting power equipment by detecting ultrasonic waves,
main body;
An image camera disposed at a front end of the main body to photograph an electric power facility to generate an image image;
An ultrasonic sensor array each of which is composed of ultrasonic sensors configured to sense ultrasonic waves emitted from the electric power facility and is disposed at a front end of the main body and arranged around the image camera with respect to the image camera; And
And a display unit disposed at a rear end of the main body and configured to display an image for detecting the ultrasound image in which the detected position of the ultrasonic wave and information on the intensity of the ultrasonic wave are overlaid on the image image of the power equipment. Facility diagnostic equipment. The power equipment diagnostic facility according to claim 1, wherein the image camera is disposed at the center of the front end of the main body. 3. The power equipment diagnostic system according to claim 2, wherein the ultrasonic sensor array is radially arranged around the image camera when the main body is viewed from the front. 4. The power equipment diagnostic system according to claim 3, wherein the ultrasonic sensor array is arranged in a spiral direction around the image camera when the main body is viewed from the front. The power equipment diagnostic apparatus according to claim 1, wherein the front end of the main body in which the ultrasonic sensor array and the image camera are disposed has a flat shape. 6. The power equipment diagnostic system according to claim 5, wherein the width of the front end of the main body is larger than the width of the rear end of the main body. The method of claim 1, wherein the main body,
And a signal converter for converting the sensing signal output from the ultrasonic sensor array into a digital signal. The method of claim 7, wherein the main body,
A data processor which receives the digital signal from the signal converter and processes the digital signal;
The data processor generates the ultrasound image by calculating the emission position and the intensity of the ultrasound using the digital signal,
And the data processor generates the detection image by overlaying the ultrasound image on the image image. The method of claim 7, wherein
Further comprising a speaker coupled to the main body,
And the signal converter converts the ultrasonic waves sensed from the ultrasonic sensor array into sound waves in an audible frequency band and outputs the sound waves as sounds from the speaker. The method of claim 1,
Power equipment diagnostic equipment further comprises a handle portion coupled to the rear end of the main body located on both sides of the main body. 11. The power equipment diagnostic equipment according to claim 10, wherein the display unit is located between the handle parts when viewed from the rear of the main body. The method of claim 1, wherein the main body,
And a battery unit for providing a power source used to drive the ultrasonic sensor array, the image camera, and the display unit. The method of claim 1, wherein the main body,
And a memory unit for storing the detection image displayed on the display unit. In the method of diagnosing a power equipment using the power equipment diagnostic equipment,
Generating an image image of the power facility by the image camera;
Generating a sensing signal by sensing the emission position of the ultrasonic wave of the power equipment and the emission intensity of the ultrasonic wave by an ultrasonic sensor array arranged around the image camera with respect to the image camera;
Converting the sensing signal into a digital signal by a signal converter;
Generating an ultrasound image in which the digital signal is calculated by a data processor to image the emission position of the ultrasound and the emission intensity of the ultrasound;
Generating an image for detection by using the ultrasound image and the image image by the data processor; And
And displaying the detection image through a display unit. 15. The method of claim 14, wherein the data processor generates the detection image by overlaying the image image on the ultrasound image. The method of claim 14,
And converting the ultrasonic waves sensed from the ultrasonic sensor array by the signal converter into sound waves in an audible frequency band, and outputting the sound waves as a sound from a speaker. 15. The apparatus of claim 14, wherein the power equipment diagnostic apparatus comprises a main body, a display unit disposed at the rear end of the main body, and handle parts located at the rear end of the main body, and the image camera and the ultrasonic sensor at the front end of the main body. And an array is arranged, and stares at the display unit while holding the handles.