Transformer partial discharge on-line monitoring positioning device

Abstract

The utility model relates to the field of partial discharge monitoring, especially transformer partial discharge on -line monitoring positioning device, including the rotating disc, the upper surface of rotating disc is provided with the installation box, the outside of installation box is provided with acoustic sensor and infrared thermal imaging appearance, the inside of installation box is provided with transmission assembly, the rotating disc is installed with telescopic link through the connecting assembly of its lower surface setting, the lower extreme of telescopic link is provided with fixed assembly, the upper segment outside of telescopic link is provided with drive assembly, and drive assembly is connected with connecting assembly through transmission assembly, and the outside of telescopic link is provided with support assembly, the utility model rotating disc can drive acoustic sensor and infrared thermal imaging appearance to rotate when rotating, and acoustic sensor and infrared thermal imaging appearance rotate monitoring, can carry out uninterrupted partial discharge on -line monitoring to multiple transformers, can position partial discharge position simultaneously, need not power off or dismount equipment and can monitor, guarantee the continuity of transformer operation.

Description

Technical Field

[0001] This utility model relates to the field of partial discharge monitoring, and in particular to an online monitoring and positioning device for transformer partial discharge. Background Technology

[0002] Partial discharge in transformers is one of the main causes of insulation degradation in power equipment. Each discharge, especially the impact of high-energy electrons or accelerated electrons, can cause various forms of physical effects and chemical reactions, particularly with long-term partial discharge. For example, when charged particles collide with the outer wall of a bubble, they may break the chemical bonds of the medium, damage the molecular structure of the medium, and cause insulation degradation, accelerating the insulation failure process. In severe cases, this may lead to equipment failure or even affect the normal operation of the power grid. Therefore, as one of the important pieces of equipment in the power system, it is necessary to monitor transformers.

[0003] To this end, a utility model patent with patent authorization announcement number CN 211698053 U discloses a transformer partial discharge online monitoring device, specifically relating to the field of partial discharge detector technology. The device includes a detector body with a probe fixing assembly. The probe fixing assembly includes a fixing block fixedly disposed on the top of the detector body. Multiple limiting rods are provided through the fixing block, and a first clamping block is welded to one end of each limiting rod. The first clamping block is disposed on one side of the fixing block, and a first hand-tightening screw is provided through the fixing block. This utility model uses a support rod composed of multiple connecting tubes placed between a second clamping block and a first clamping block. By tightening the first hand-tightening screw, the support rod is fixed to the top of the detector body, facilitating long-term measurement of transformers at high locations. The multiple connecting tubes can be unscrewed and separated, making it easy to store in a storage box, greatly simplifying the portability of this utility model.

[0004] However, in actual use, it can only monitor a single transformer online and is not suitable for use inside a substation. Furthermore, it cannot accurately locate the partial discharge position of the transformer during use.

[0005] Therefore, it is necessary to further improve the online monitoring and location device for transformer partial discharge. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the existing defects and provide a transformer partial discharge online monitoring and positioning device that can monitor the partial discharge of multiple transformers at the same time and locate the partial discharge position. Monitoring can be carried out without power outages or equipment disassembly, ensuring the continuity of transformer operation and effectively solving the problems in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a transformer partial discharge online monitoring and positioning device, including a rotating disk, a mounting box provided on the upper surface of the rotating disk, an acoustic wave sensor and an infrared thermal imager provided on the outer side of the mounting box, a transmission component provided inside the mounting box, a telescopic rod mounted on the rotating disk through a connecting component provided on its lower surface, a fixing component provided at the lower end of the telescopic rod, a driving component provided on the outer side of the upper section of the telescopic rod, the driving component being connected to the connecting component through a transmission component, and a support component provided on the outer side of the telescopic rod, the support component being connected to the rotating disk through an auxiliary rotation component.

[0008] Preferably, the transmission component includes an acoustic amplifier and a wireless data transmission terminal, which are disposed inside the mounting box. The output of the acoustic amplifier is electrically connected to the output of the wireless data transmission terminal, the output of the acoustic sensor is electrically connected to the input of the acoustic amplifier, and the output of the infrared thermal imager is electrically connected to the output of the wireless data transmission terminal.

[0009] Preferably, the fixing component includes a rib and a fixing plate. The fixing plate is disposed on the lower end face of the telescopic rod. The rib is connected to the fixing plate and the telescopic rod. The fixing plate has fixing holes.

[0010] Preferably, the support assembly includes support columns and T-shaped support members, with the support column array distributed on the outer side of the T-shaped support member, and the T-shaped support member fitted onto the telescopic rod.

[0011] Preferably, the auxiliary rotating assembly includes a support ring and a circular track. The circular track is installed in a circular groove on the upper surface of the support ring, the support ring is located at the upper end of the support column, and the circular track is installed on the lower surface of the rotating disk.

[0012] Preferably, the connecting assembly includes a connecting ring and a bearing. The connecting ring is disposed in the middle of the lower surface of the rotating disk, and the bearing is installed inside the connecting ring and fitted onto the upper outer surface of the telescopic rod.

[0013] Preferably, the drive assembly includes a fixed ring, a fixed frame, and a stepper motor. The fixed ring is fitted onto the telescopic rod, the fixed frame is mounted on the fixed ring, and the stepper motor is mounted on the fixed frame.

[0014] Preferably, the transmission assembly includes a gear ring and a gear. The gear ring is mounted on the outer side of the connecting ring, and the gear is mounted on the end of the output shaft of the stepper motor. The gear ring and the gear mesh with each other.

[0015] The working principle and usage principle of this utility model are as follows: the device is installed between adjacent transformers in a substation by fixing components, and the stepper motor is driven to rotate. The stepper motor can drive the gear to rotate, and the gear drives the gear ring and the connecting ring to rotate synchronously, thereby making the rotating disk rotate.

[0016] When the rotating disk rotates, it can drive the acoustic wave sensor and infrared thermal imager to rotate. The ultrasonic waves generated by partial discharge propagate through the air. The acoustic wave sensor can capture and locate multi-source acoustic wave signals, accurately locating the partial discharge point at a specific location inside the transformer. The infrared thermal imager can detect the heat release accompanied by slight heating during partial discharge. By capturing abnormal temperature areas, the results of acoustic wave monitoring are verified, and thermal characteristic information of the partial discharge point is provided.

[0017] The partial discharge ultrasonic signal captured by the acoustic sensor is amplified by the acoustic amplifier and then transmitted to the wireless data transmission terminal. The partial discharge image of the transformer monitored by the infrared thermal imager can be transmitted to the wireless data transmission terminal. The wireless data transmission terminal transmits the received signal to an external terminal device for visualization.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. The ultrasonic waves generated by partial discharge propagate through the air. The acoustic wave sensor can capture and locate multi-source acoustic wave signals, accurately pinpointing the partial discharge point to its specific location inside the transformer. The infrared thermal imager can detect the heat release accompanied by slight heating during partial discharge. By capturing areas with abnormal temperatures, the results of acoustic wave monitoring can be verified, while providing thermal characteristic information of the partial discharge point. The combination of acoustic wave positioning and infrared thermal imaging enables more comprehensive diagnosis of partial discharge faults. Monitoring can be carried out without power outages or equipment disassembly, ensuring the continuity of transformer operation.

[0020] 2. When the rotating disk rotates, it can drive the acoustic wave sensor and infrared thermal imager to rotate as well. The rotation monitoring of the acoustic wave sensor and infrared thermal imager can enable uninterrupted online monitoring of partial discharge of multiple transformers, and the online monitoring is non-contact, which prevents the transformers from affecting the operation of the equipment and facilitates the inspection and maintenance of the equipment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a partial cross-sectional view of the present invention from below;

[0023] Figure 3 This is an enlarged schematic diagram of part A of this utility model;

[0024] Figure 4 This is a cross-sectional schematic diagram of the rotating disk part of this utility model.

[0025] Explanation of reference numerals in the attached drawings: 1. Rotating disk; 2. Mounting box; 3. Transmission assembly; 301. Acoustic amplifier; 302. Wireless data transmission terminal; 4. Acoustic sensor; 5. Infrared thermal imager; 6. Fixing assembly; 601. Rib plate; 602. Fixing plate; 7. Support assembly; 701. Support column; 702. T-shaped support; 8. Telescopic rod; 9. Auxiliary rotation assembly; 901. Support ring; 902. Circular track; 10. Transmission assembly; 1001. Gear ring; 1002. Gear; 11. Drive assembly; 1101. Fixing ring; 1102. Fixing frame; 1103. Stepper motor; 12. Connecting assembly; 1201. Connecting ring; 1202. Bearing. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of the embodiments of this application easier to understand, the embodiments of this application are further described below in conjunction with the figures and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the embodiments of this application and are not intended to limit the embodiments of this application.

[0027] Please see Figure 1-4 This utility model provides a technical solution: a transformer partial discharge online monitoring and positioning device, including a rotating disk 1, a mounting box 2 on the upper surface of the rotating disk 1, an acoustic wave sensor 4 and an infrared thermal imager 5 on the outer side of the mounting box 2, a transmission component 3 inside the mounting box 2, a telescopic rod 8 mounted on the rotating disk 1 through a connecting component 12 on its lower surface, a fixing component 6 at the lower end of the telescopic rod 8, a driving component 11 on the outer side of the upper section of the telescopic rod 8, the driving component 11 being connected to the connecting component 12 through a transmission component 10, and a support component 7 on the outer side of the telescopic rod 8, the support component 7 being connected to the rotating disk 1 through an auxiliary rotating component 9.

[0028] Specifically, the ultrasonic waves generated by partial discharge propagate through the air. The acoustic wave sensor 4 can capture and locate multi-source acoustic wave signals, accurately pinpointing the partial discharge point to its exact location inside the transformer. The infrared thermal imager 5 can detect the heat release accompanying the partial discharge and verify the results of the acoustic wave monitoring by capturing abnormal temperature areas, while also providing thermal characteristic information of the partial discharge point.

[0029] Specifically, there are two sets of acoustic wave sensor 4 and infrared thermal imager 5. The acoustic wave sensor 4 and infrared thermal imager 5 are arranged at right angles, which can monitor the partial discharge position of the transformer from all directions. The telescopic rod 8 can adjust the height of the acoustic wave sensor 4 and infrared thermal imager 5, which facilitates the monitoring of the transformer.

[0030] Specifically, the rotating disk 1 can rotate on the telescopic rod 8 via the connecting component 12, the driving component 11 can provide power for the rotation of the rotating disk 1, and the supporting component 7 can provide support force without affecting the rotation of the rotating disk 1.

[0031] Furthermore, the transmission component 3 includes an acoustic amplifier 301 and a wireless data transmission terminal 302, which are disposed inside the mounting box 2. The output of the acoustic amplifier 301 is electrically connected to the output of the wireless data transmission terminal 302, the output of the acoustic sensor 4 is electrically connected to the input of the acoustic amplifier 301, and the output of the infrared thermal imager 5 is electrically connected to the output of the wireless data transmission terminal 302.

[0032] Specifically, the partial discharge ultrasonic signal captured by the acoustic sensor 4 is amplified by the acoustic amplifier 301, and the acoustic amplifier 301 transmits the signal to the wireless data transmission terminal 302. The transformer partial discharge image monitored by the infrared thermal imager 5 can be transmitted to the wireless data transmission terminal 302, and the wireless data transmission terminal 302 transmits the received signal to the external terminal device.

[0033] Furthermore, the fixing component 6 includes a rib plate 601 and a fixing plate 602. The fixing plate 602 is disposed on the lower end face of the telescopic rod 8. The rib plate 601 is connected to the fixing plate 602 and the telescopic rod 8. The fixing plate 602 has fixing holes.

[0034] Specifically, the fixing plate 602 can be installed on the ground with expansion bolts to facilitate the installation and fixing of the device, and the rib plate 601 can increase the connection strength between the fixing plate 602 and the telescopic rod 8.

[0035] Furthermore, the support assembly 7 includes support columns 701 and T-shaped support members 702. The support columns 701 are arrayed on the outer side of the T-shaped support members 702, and the T-shaped support members 702 are fitted onto the telescopic rod 8.

[0036] Furthermore, the auxiliary rotating assembly 9 includes a support ring 901 and a circular track 902. The circular track 902 is installed in a circular groove opened on the upper surface of the support ring 901. The support ring 901 is located at the upper end of the support column 701, and the circular track 902 is installed on the lower surface of the rotating disk 1.

[0037] Specifically, when the rotating disk 1 rotates, it can drive the circular track 902 to rotate on the support ring 901. The support column 701 supports the support ring 901, thereby supporting the rotating disk 1 and increasing the stability of the rotating disk 1.

[0038] Furthermore, the connecting assembly 12 includes a connecting ring 1201 and a bearing 1202. The connecting ring 1201 is disposed in the middle of the lower surface of the rotating disk 1, and the bearing 1202 is installed inside the connecting ring 1201 and is fitted onto the upper end of the outer surface of the telescopic rod 8.

[0039] Specifically, the bearing 1202 facilitates the rotation of the rotating disk 1 at the upper end of the telescopic rod 8.

[0040] Furthermore, the drive assembly 11 includes a retaining ring 1101, a retaining frame 1102, and a stepper motor 1103. The retaining ring 1101 is fitted onto the telescopic rod 8, the retaining frame 1102 is mounted on the retaining ring 1101, and the stepper motor 1103 is mounted on the retaining frame 1102.

[0041] Furthermore, the transmission assembly 10 includes a gear ring 1001 and a gear 1002. The gear ring 1001 is mounted on the outer side of the connecting ring 1201, and the gear 1002 is mounted on the output shaft end of the stepper motor 1103. The gear ring 1001 and the gear 1002 mesh with each other.

[0042] Specifically, the stepper motor 1103 is driven to rotate, which in turn drives the gear 1002 to rotate. The gear 1002 drives the gear ring 1001 and the connecting ring 1201 to rotate synchronously, thereby causing the rotating disk 1 to rotate.

[0043] Specifically, the transmission ratio between the gear ring 1001 and the gear 1002 is 4:1, and the slow speed of the stepper motor 1103 can make the rotating disk 1 rotate slowly, thereby improving the monitoring accuracy.

[0044] It is worth noting that the stepper motor 1103 can be the 110 series stepper motor from Shanghai Fengxin Mechanical Transmission, the acoustic sensor 4 can be the broadband sensor AE1045S, the infrared thermal imager 5 can be the Testo 869 infrared thermal imager, the acoustic amplifier 301 is an acoustic amplifier that is compatible with the broadband sensor AE1045S, and the wireless data transmission terminal 302 is the DF-1005 wireless data transmission terminal from Shanghai Dingfei Click Technology.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A transformer partial discharge online monitoring and positioning device, comprising a rotating disk (1), characterized in that: The upper surface of the rotating disk (1) is provided with a mounting box (2). The outer side of the mounting box (2) is provided with an acoustic sensor (4) and an infrared thermal imager (5). The inside of the mounting box (2) is provided with a transmission component (3). The rotating disk (1) is equipped with a telescopic rod (8) through a connecting component (12) provided on its lower surface. The lower end of the telescopic rod (8) is provided with a fixing component (6). The outer side of the upper section of the telescopic rod (8) is provided with a driving component (11). The driving component (11) is connected to the connecting component (12) through a transmission component (10). The outer side of the telescopic rod (8) is provided with a support component (7). The support component (7) is connected to the rotating disk (1) through an auxiliary rotating component (9).

2. The transformer partial rupture online monitoring and positioning device according to claim 1, characterized in that: The transmission component (3) includes an acoustic amplifier (301) and a wireless data transmission terminal (302). The acoustic amplifier (301) and the wireless data transmission terminal (302) are installed inside the mounting box (2). The output end of the acoustic amplifier (301) is electrically connected to the output end of the wireless data transmission terminal (302). The output end of the acoustic sensor (4) is electrically connected to the input end of the acoustic amplifier (301). The output end of the infrared thermal imager (5) is electrically connected to the output end of the wireless data transmission terminal (302).

3. The transformer partial rupture online monitoring and positioning device according to claim 1, characterized in that: The fixing component (6) includes a rib (601) and a fixing plate (602). The fixing plate (602) is disposed on the lower end face of the telescopic rod (8). The rib (601) is connected to the fixing plate (602) and the telescopic rod (8). The fixing plate (602) has fixing holes.

4. The transformer partial rupture online monitoring and positioning device according to claim 1, characterized in that: The support assembly (7) includes support columns (701) and T-shaped support members (702). The support columns (701) are arranged in an array on the outer side of the T-shaped support members (702), and the T-shaped support members (702) are fitted onto the telescopic rod (8).

5. The transformer partial rupture online monitoring and positioning device according to claim 1 or 4, characterized in that: The auxiliary rotating assembly (9) includes a support ring (901) and a circular track (902). The circular track (902) is installed in a circular groove on the upper surface of the support ring (901). The support ring (901) is located at the upper end of the support column (701), and the circular track (902) is installed on the lower surface of the rotating disk (1).

6. The transformer partial rupture online monitoring and positioning device according to claim 1, characterized in that: The connecting assembly (12) includes a connecting ring (1201) and a bearing (1202). The connecting ring (1201) is located in the middle of the lower surface of the rotating disk (1), and the bearing (1202) is installed inside the connecting ring (1201). The bearing (1202) is fitted on the upper side of the outer surface of the telescopic rod (8).

7. The transformer partial rupture online monitoring and positioning device according to claim 1, characterized in that: The drive assembly (11) includes a fixed ring (1101), a fixed frame (1102), and a stepper motor (1103). The fixed ring (1101) is fitted onto the telescopic rod (8), the fixed frame (1102) is mounted on the fixed ring (1101), and the stepper motor (1103) is mounted on the fixed frame (1102).

8. The transformer partial discharge online monitoring and positioning device according to claim 1, 6 or 7, characterized in that: The transmission assembly (10) includes a gear ring (1001) and a gear (1002). The gear ring (1001) is mounted on the outer side of the connecting ring (1201), and the gear (1002) is mounted on the end of the output shaft of the stepper motor (1103). The gear ring (1001) and the gear (1002) mesh with each other.

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