A partial discharge type recognition device and method thereof

Abstract

The application relates to the technical field of partial discharge type identification, and discloses a partial discharge type identification device and method based on deep learning, the bottom of the fixed plate is provided with a friction layer, one side of the top of the fixed plate is fixedly connected with a second supporting plate, and the inner wall of the fixed plate is movably sleeved with a sliding block, the fixed plate is provided, which is favorable for fixing the whole device, the second supporting plate and the first supporting plate are provided, which is favorable for fixing the inspection equipment, the sliding block is provided, which is favorable for driving the first supporting plate to move by a certain distance, the motor protection cabin is provided, which is favorable for fixing the servo motor, the servo motor is provided, which is favorable for providing rotating force, the threaded rod is provided, which is favorable for converting the rotating force, the first supporting plate is provided, which is favorable for fixing the second fixed semicircle, and the second fixed semicircle is provided, which is favorable for fixing the fixed rubber ring.

Description

Technical Field

[0001] This invention relates to the field of partial discharge type identification technology, and more specifically, to a device and method for identifying partial discharge types. Background Technology

[0002] Partial discharge mainly refers to high-voltage electrical equipment. According to power grid statistics, partial discharge is an important cause of insulation breakdown in high-voltage electrical equipment and an important indicator of insulation deterioration.

[0003] Furthermore, due to the long service life of electrical appliances, partial discharge may occur in the internal cables and circuits. When partial discharge occurs in the insulation, it will affect the insulation life. Each discharge, the impact of high-energy electrons or accelerated electrons, especially the long-term effect of partial discharge, will cause various forms of physical effects and chemical reactions. For example, when charged particles collide with the outer wall of the bubble, they may break the chemical bonds of the insulation and cause it to decompose, destroy the molecular structure of the insulation, cause insulation deterioration, accelerate the insulation damage process, and then may cause certain damage to the electrical equipment, resulting in certain economic losses.

[0004] Because the partial discharge sites are so small, they are easily overlooked by users. In addition, if an inspection is needed, traditionally, various experimental instruments such as electromagnetic pulses are required to determine the location of the discharge and then to judge the type of discharge. This process is time-consuming and requires experienced personnel to operate, which is very troublesome. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a partial discharge type identification device and method to solve the problems existing in the background art.

[0006] The present invention provides the following technical solution: a partial discharge type identification device and method, comprising a fixed plate, a friction layer at the bottom of the fixed plate, a second support plate fixedly connected to one side of the top of the fixed plate, a sliding block movably sleeved on the inner wall of the fixed plate, and a first support plate fixedly connected to the top of the sliding block.

[0007] In a preferred embodiment, a motor protection chamber is fixedly connected to one side of the inner wall of the fixed plate, a servo motor is fixedly connected to the inner wall of the motor protection chamber, a threaded rod is fixedly connected to one end of the servo motor, a sliding block is engaged with the outer wall of one end of the threaded rod, and telescopic sealing plates are fixedly connected to both ends of the top of the sliding block.

[0008] In a preferred embodiment, a second fixing semi-circular ring is fixedly connected to the top of the first support plate, the second fixing semi-circular ring has fixing grooves at both ends, and a fixing rubber ring is fixedly connected to the inner wall of the second fixing semi-circular ring.

[0009] In a preferred embodiment, a first fixing semicircular ring is fixedly connected to the top of the second support plate, and sealing rubber plates are fixedly connected to the outer walls at both ends of the first fixing semicircular ring.

[0010] In a preferred embodiment, a movable rod is fixedly connected to the inner wall of the first fixed semicircular ring, a sliding groove is provided on the outer wall of the movable rod, a rubber disc is fixedly connected to the outer wall of the movable rod, a fixed ring is sleeved on the inner wall of the movable rod, an electromagnet is fixedly connected to one side of the fixed ring, and a pulse signal acquisition device is fixedly connected to the bottom of the other side of the fixed ring.

[0011] In a preferred embodiment, after the fixed ring is displaced, its power input is stopped, and at the same time, the pulse signal acquisition device begins to acquire pulse signals. After the acquisition is completed, the signals are sent to the computer through the signal transmitting device, and a PRPD spectrum is generated by phase superposition.

[0012] In a preferred embodiment, when the computer generates the PRPD spectrum, it is necessary to divide the PRPD spectrum into two different regions using the phase method, and simultaneously calculate the amplitude and wavelength of the two groups of spectra. Then, the computer calculates the type of partial discharge.

[0013] In a preferred embodiment, the sealing rubber plate is a sleeve structure, the inner wall of the sealing rubber plate is fixedly connected to a fixed hollow chamber, the middle of the fixed hollow chamber is fixedly connected to an elastic connecting chamber, the elastic connecting chamber is made of elastic metal material, and the inner wall of the fixed hollow chamber is fixedly connected to a spring.

[0014] This includes the following operating methods:

[0015] S1. Manually move the entire device to the position of the equipment to be tested. After moving it to the appropriate position, manually place the testing equipment inside the second fixed semi-circular ring and the first fixed semi-circular ring. At the same time, manually turn on the power switch to start the servo motor to start working, which will drive the threaded rod to rotate. The threaded rod will then rotate inside the sliding block, which will drive the sliding block and the first support plate to move a certain distance. When one end of the sealing rubber plate presses against the weight sensing device on the inner wall of the second fixed semi-circular ring, the servo motor can be stopped from working.

[0016] S2. After the sealing rubber plate enters the inner wall of the second fixed semicircular ring, a certain amount of current can be introduced into the detection equipment. When the current flows into the detection part, an electromagnetic field is formed in the partial discharge part due to the break in its insulation. At the same time, the electromagnet is also powered, which generates a certain magnetic force. The direction of the magnetic force needs to be adjusted according to the direction of the current flow in the equipment. When the current is introduced into the electromagnet, the magnetic force generated by the partial discharge part will attract the electromagnet to move a certain distance. The staff can then observe which set of electromagnets has moved through the window on one side of the sealing rubber plate and the second fixed semicircular ring, and then determine whether there is a partial discharge phenomenon.

[0017] S3. After the fixed ring is displaced, the power input is stopped, and the pulse signal acquisition device is powered on to acquire pulse signals. After acquisition, the signals are sent to the computer via a signal transmitter. A PRPD spectrum is generated by phase superposition. After the computer generates the PRPD spectrum, it is necessary to divide the PRPD spectrum into two different regions using the phase method. The amplitude and wavelength of the two spectra are calculated, and then the type of partial discharge is obtained through computer calculation.

[0018] The technical effects and advantages of this invention are as follows:

[0019] 1. The present invention has the following advantages: the fixed plate helps to fix the overall device; the second support plate and the first support plate help to check the fixation of the equipment; the sliding block helps to move the first support plate a certain distance; the motor protection compartment helps to fix the servo motor; the servo motor helps to provide rotational force; the threaded rod helps to convert rotational force; the first support plate helps to fix the second fixed semi-circular ring; and the second fixed semi-circular ring helps to fix the fixed rubber ring.

[0020] 2. The present invention, by providing a second support plate, facilitates the fixing of the first fixed semi-circular ring; by providing a sealing rubber plate, facilitates the sealing connection of the second fixed semi-circular ring; by providing a fixed rubber ring, facilitates the fixing of the moving rod; by providing a moving rod, facilitates the fixing of the fixed ring; by providing an electromagnet, facilitates the sensing of changes in its magnetic field; and by providing a pulse signal acquisition device, facilitates the sensing of changes in the ripples of its pulse signal. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the overall structure of the magnetic field induction device of the present invention.

[0023] Figure 3 This is a cross-sectional schematic diagram of the fixing plate part of the present invention.

[0024] Figure 4 This is a schematic cross-sectional view of the overall structure of the sealing rubber sheet of the present invention.

[0025] Figure 5 This is a schematic cross-sectional view of the overall structure of the fixed hollow cabin and the elastic connecting cabin of the present invention.

[0026] The attached figures are labeled as follows: 1. Fixed plate; 2. First support plate; 3. Second support plate; 4. First fixed semi-circular ring; 5. Sealing rubber plate; 501. Fixed hollow chamber; 502. Elastic connecting chamber; 503. Spring; 6. Second fixed semi-circular ring; 7. Telescopic sealing plate; 8. Fixed rubber ring; 9. Pulse signal acquisition device; 10. Moving rod; 11. Fixed ring; 12. Electromagnet; 13. Motor protection chamber; 14. Servo motor; 15. Threaded rod; 16. Sliding block; 17. Rubber disc. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The deep learning-based partial discharge type identification method involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figure 1-3 As shown, the present invention provides a partial discharge type identification device and method, including a fixing plate 1, a friction layer at the bottom of the fixing plate 1, a second support plate 3 fixedly connected to one side of the top of the fixing plate 1, a sliding block 16 movably sleeved on the inner wall of the fixing plate 1, and a first support plate 2 fixedly connected to the top of the sliding block 16. The fixing plate 1 helps to fix the overall device, the second support plate 3 and the first support plate 2 help to check the fixation of the device, and the sliding block 16 helps to move the first support plate 2 a certain distance.

[0029] In one specific embodiment, a motor protection chamber 13 is fixedly connected to one side of the inner wall of the fixing plate 1. A servo motor 14 is fixedly connected to the inner wall of the motor protection chamber 13. A threaded rod 15 is fixedly connected to one end of the servo motor 14. A sliding block 16 is engaged with the outer wall of one end of the threaded rod 15. Telescopic sealing plates 7 are fixedly connected to both ends of the top of the sliding block 16. By providing the motor protection chamber 13, it is beneficial to fix the servo motor 14. By providing the servo motor 14, it is beneficial to provide rotational force. By providing the threaded rod 15, it is beneficial to convert rotational force.

[0030] In one specific embodiment, a second fixing semi-circular ring 6 is fixedly connected to the top of the first support plate 2. The second fixing semi-circular ring 6 has fixing grooves at both ends. A fixing rubber ring 8 is fixedly connected to the inner wall of the second fixing semi-circular ring 6. The first support plate 2 is provided to fix the second fixing semi-circular ring 6, and the second fixing semi-circular ring 6 is provided to fix the fixing rubber ring 8.

[0031] In one specific embodiment, a first fixed semi-circular ring 4 is fixedly connected to the top of the second support plate 3, and sealing rubber plates 5 are fixedly connected to the outer walls of both ends of the first fixed semi-circular ring 4. By providing the second support plate 3, it is beneficial to fix the first fixed semi-circular ring 4, and by providing the sealing rubber plates 5, it is beneficial to seal the connection of the second fixed semi-circular ring 6.

[0032] In one specific embodiment, a movable rod 10 is fixedly connected to the inner wall of the first fixed semicircular ring 4. A sliding groove is provided on the outer wall of the movable rod 10. A rubber disc 17 is fixedly connected to the outer wall of the movable rod 10. A fixed ring 11 is sleeved on the inner wall of the movable rod 10. An electromagnet 12 is fixedly connected to one side of the fixed ring 11. A pulse signal acquisition device 9 is fixedly connected to the bottom of the other side of the fixed ring 11. The fixed rubber ring 8 helps to fix the movable rod 10. The movable rod 10 helps to fix the fixed ring 11. The electromagnet 12 helps to sense changes in its magnetic field. The pulse signal acquisition device 9 helps to sense changes in the ripples of its pulse signal.

[0033] In one specific implementation, after the fixed ring 11 is displaced, its power input is stopped, and at the same time, the pulse signal acquisition device 9 begins to acquire pulse signals. After the acquisition is completed, the signals are sent to the computer through the signal transmitting device to generate a PRPD spectrum through phase superposition.

[0034] In one specific embodiment, the sealing rubber plate 5 is a sleeve structure. The inner wall of the sealing rubber plate 5 is fixedly connected to a fixed hollow chamber 501. The middle of the fixed hollow chamber 501 is fixedly connected to an elastic connecting chamber 502. The elastic connecting chamber 502 is made of elastic metal material. The inner wall of the fixed hollow chamber 501 is fixedly connected to a spring 503. In this embodiment, by providing a fixed hollow chamber 501, an elastic connecting chamber 502, and a spring 503, it is beneficial to generate buffering force. When the two sets of sealing rubber plates 5 are engaged, they can play a certain buffering role, thereby preventing certain wear between the two sets of sealing rubber plates 5, thus preventing certain economic losses.

[0035] In one specific implementation, when the computer generates a PRPD spectrum, it is necessary to divide the PRPD spectrum into two different regions using the phase method, and simultaneously calculate the amplitude and wavelength of the two spectra. Then, the computer calculates the type of partial discharge.

[0036] The operating method of this invention:

[0037] S1. The entire device is manually moved to the position of the equipment to be tested. After being moved to the appropriate position, the testing equipment is manually placed inside the second fixed semi-circular ring 6 and the first fixed semi-circular ring 4. At the same time, the power switch is manually turned on, which causes the servo motor 14 to start working. This causes the threaded rod 15 to rotate, which in turn causes the threaded rod 15 to rotate inside the sliding block 16. This causes the sliding block 16 and the first support plate 2 to move a certain distance. When one end of the sealing rubber plate 5 presses against the weight sensing device on the inner wall of the second fixed semi-circular ring 6, the servo motor 14 can be stopped from working.

[0038] S2. After the sealing rubber plate 5 enters the inner wall of the second fixed semi-circular ring 6, a certain amount of current can be introduced into the inside of the detection equipment. When the current flows into the detection part, the partial discharge part will form an electromagnetic field due to the break in its insulation. At the same time, the electromagnet 12 is also powered, which will generate a certain magnetic force. The direction of the magnetic force needs to be adjusted according to the direction of the current flow in the equipment. When the current is introduced into the electromagnet 12, the magnetic force generated by the partial discharge part will attract the electromagnet 12 to move a certain distance. The staff can then observe which set of electromagnets 12 has moved through the window on one side of the sealing rubber plate 5 and the second fixed semi-circular ring 6, and then determine whether there is a partial discharge phenomenon.

[0039] S3. After the fixed ring 11 is displaced, the power input is stopped, and the pulse signal acquisition device 9 is powered on to perform pulse signal acquisition. After acquisition, the signal is sent to the computer through the signal transmitting device. The PRPD spectrum is generated by phase superposition. After the computer generates the PRPD spectrum, the PRPD spectrum is divided into two different regions by phase method. The amplitude and wavelength of the two spectrums are calculated at the same time. Then, the computer calculates the type of partial discharge.

[0040] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0041] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0042] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A partial discharge type identification device, comprising a fixing plate (1), characterized in that: The bottom of the fixed plate (1) is provided with a friction layer, and a second support plate (3) is fixedly connected to one side of the top of the fixed plate (1). A sliding block (16) is movably sleeved on the inner wall of the fixed plate (1), and a first support plate (2) is fixedly connected to the top of the sliding block (16). The top of the first support plate (2) is fixedly connected to a second fixed semi-circular ring (6), and the two ends of the second fixed semi-circular ring (6) are provided with fixed grooves. The inner wall of the second fixed semi-circular ring (6) is fixedly connected to a fixed rubber ring (8), and the inner wall of the (6) is provided with a fixed groove. The top of the second support plate (3) is fixedly connected to a first fixed semi-circular ring (4), and the outer walls at both ends of the first fixed semi-circular ring (4) are fixedly connected to sealing rubber plates (5). A movable rod (10) is fixedly connected to the inner wall of the first fixed semi-circular ring (4). A sliding groove is provided on the outer wall of the movable rod (10). A rubber disc (17) is fixedly connected to the outer wall of the movable rod (10). A fixed ring (11) is sleeved on the inner wall of the movable rod (10). An electromagnet (12) is fixedly connected to one side of the fixed ring (11). A pulse signal acquisition device (9) is fixedly connected to the bottom of the other side of the fixed ring (11). After the fixed ring (11) is displaced, it stops its power input. At the same time, the pulse signal acquisition device (9) starts to acquire pulse signals. After the acquisition is completed, the signals are sent to the computer through the signal transmitting device and a PRPD spectrum is generated by phase superposition.

2. The partial discharge type identification device according to claim 1, characterized in that: A motor protection chamber (13) is fixedly connected to one side of the inner wall of the fixed plate (1). A servo motor (14) is fixedly connected to the inner wall of the motor protection chamber (13). A threaded rod (15) is fixedly connected to one end of the servo motor (14). A sliding block (16) is engaged with the outer wall of one end of the threaded rod (15). Telescopic sealing plates (7) are fixedly connected to both ends of the top of the sliding block (16).

3. The partial discharge type identification device according to claim 1, characterized in that: When a computer generates a PRPD spectrum, it needs to use the phase method to divide the PRPD spectrum into two different regions, calculate the amplitude and wavelength of the two spectra, and then use the computer to calculate the type of partial discharge.

4. The partial discharge type identification device according to claim 1, characterized in that: The sealing rubber plate (5) is a sleeve structure. The inner wall of the sealing rubber plate (5) is fixedly connected to a fixed hollow chamber (501). The middle part of the fixed hollow chamber (501) is fixedly connected to an elastic connecting chamber (502). The elastic connecting chamber (502) is made of elastic metal material. The inner wall of the fixed hollow chamber (501) is fixedly connected to a spring (503).

5. The method for identifying a partial discharge type according to any one of claims 1-4, characterized in that, The following operating methods are included: S1. Manually move the entire device to the position of the equipment to be tested. After moving it to the appropriate position, manually place the test equipment inside the second fixed semi-circular ring (6) and the first fixed semi-circular ring (4). At the same time, manually turn on the power switch to start the servo motor (14) to start working, which will drive the threaded rod (15) to rotate. Then the threaded rod (15) will rotate inside the sliding block (16), which will drive the sliding block (16) and the first support plate (2) to move a certain distance. When one end of the sealing rubber plate (5) presses against the weight sensing device on the inner wall of the second fixed semi-circular ring (6), the servo motor (14) can be stopped from working. S2. When the sealing rubber plate (5) enters the inner wall of the second fixed semi-circular ring (6), a certain amount of current can be introduced into the inside of the detection equipment. When the current flows into the detection part, the partial discharge part will form an electromagnetic field because of the break in its insulation part. At the same time, the electromagnet (12) is also powered, which will generate a certain magnetic force. The direction of the magnetic force needs to be adjusted according to the direction of the current flow in the equipment. When the electromagnet (12) is powered, the magnetic force generated by the partial discharge part will attract the electromagnet (12) to move a certain distance. The staff can then observe which set of electromagnets (12) has moved through the window on one side of the sealing rubber plate (5) and the second fixed semi-circular ring (6) to determine whether there is a partial discharge phenomenon. S3. After the fixed ring (11) is displaced, the power input is stopped. At the same time, the pulse signal acquisition device (9) is powered on and then the pulse signal acquisition is carried out. After the acquisition is completed, it needs to be sent to the computer through the signal transmitting device. The PRPD spectrum is generated by phase superposition. After the computer generates the PRPD spectrum, it needs to divide the PRPD spectrum into two different regions by phase method. At the same time, the amplitude and wavelength of the two spectrums are calculated. Then, the computer calculates and obtains the type of partial discharge.

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