Outdoor high-voltage fault inspection monitoring device

Abstract

This invention relates to the field of power equipment condition monitoring technology, specifically to an outdoor high-voltage fault inspection and monitoring device. It includes a mounting base and a lifting assembly. The lifting assembly drives the mounting base to move up and down. The mounting base has a mounting groove, within which a mounting rod is slidably connected. Infrared temperature detectors are fixedly installed on one side of the mounting rod and at the opening of the mounting groove. A movable hole is formed through the groove wall, within which a movable frame is slidably connected. This device integrates temperature measurement, multi-dimensional partial discharge, vibration, and power parameter acquisition functions. Relying on a six-in-one terminal to fuse and analyze data, it can accurately identify various latent faults in switchgear, achieving comprehensive early warning. With its adjustable lifting and mounting structure, it can adapt to different switchgear configurations and accurately acquire various monitoring signals. Wireless transmission avoids wiring safety hazards, requires no modification to the original equipment structure, and is easy to install, effectively improving the intelligence and operational safety of outdoor high-voltage equipment inspection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power equipment state monitoring, in particular to an outdoor high-voltage fault inspection and monitoring device. BACKGROUND

[0002] Outdoor high-voltage distribution cabinets are exposed to complex outdoor conditions for a long time, are easily affected by factors such as temperature and humidity changes, contamination, and vibration, and are prone to latent faults such as insulation partial discharge, joint overheating, mechanical looseness, and abnormal electrical parameters, which are weak links in power system operation and maintenance.

[0003] At present, the traditional inspection and monitoring method is relatively single, and fixed-point sensor monitoring or manual regular inspection is mostly used, which has limited monitoring dimensions, has temperature measurement blind areas, low partial discharge detection precision, and cannot synchronously monitor mechanical and electrical faults; at the same time, the traditional monitoring device has poor adaptability, complicated wiring, and certain safety hazards, and cannot realize all-weather and all-directional automatic hidden danger screening, which is prone to cause fault omission and misdiagnosis, and cannot meet the use requirements of intelligent operation and maintenance and early fault warning of outdoor high-voltage equipment, so it is necessary to provide an outdoor high-voltage fault inspection and monitoring device. SUMMARY

[0004] In view of the problems in the prior art, the present application provides an outdoor high-voltage fault inspection and monitoring device.

[0005] The technical scheme adopted by the present application to solve the technical problem is: an outdoor high-voltage fault inspection and monitoring device, comprising a mounting seat and a lifting assembly, the lifting assembly is used to drive the mounting seat to lift, the mounting seat is provided with a mounting groove, the mounting groove is slidably connected with a mounting rod, the rod wall of one side of the mounting rod and the groove opening of the mounting groove are both fixedly installed with an infrared temperature measurement detector, a moving hole is penetratingly formed in the groove wall of the mounting groove, a moving frame is slidably connected in the moving hole, the mounting groove and the moving frame are both provided with a locking assembly for fixing the mounting rod and the moving frame, one of the locking assemblies is fixedly connected with a connecting rod, and the connecting rod is fixedly connected with an ultrasonic partial discharge sensor, the other two locking assemblies are respectively fixedly installed with another ultrasonic partial discharge sensor and a UHF ultrahigh frequency partial discharge sensor, a TEV transient earth voltage sensor is installed on the lifting assembly, the mounting seat and the mounting rod are both provided with an elastic assembly at the end away from each other, and a piezoelectric vibration sensor is fixedly installed through the elastic assembly, a six-in-one comprehensive monitoring terminal is fixedly installed at the top of the lifting assembly, and the six-in-one comprehensive monitoring terminal is signal connected with a power quality acquisition module assembly.

[0006] Specific, the lifting assembly comprises a fixed seat, a lifting groove is formed in the fixed seat, a reduction motor is fixedly installed at the top end of the fixed seat, a lead screw is rotatably connected in the lifting groove through a bearing, the top end of the lead screw is fixedly connected with the output end of the reduction motor through a shaft coupling, a lifting block is threadedly connected to the wall of the lifting groove, one end of the lifting block extends through the fixed seat, and the end of the lifting block outside the fixed seat is fixedly connected with the mounting seat.

[0007] Specific, the TEV transient voltage sensor is fixedly installed on the side wall of the fixed seat away from the lifting groove, and the six-in-one comprehensive monitoring terminal is fixedly installed on the upper surface of the fixed seat.

[0008] Specific, the two locking assemblies each comprise a threaded hole, the threaded holes are formed in the groove wall of the mounting groove and the moving frame respectively, and the threaded holes are threadedly connected with threaded rods, one end of the two threaded rods is respectively abutted with the mounting seat and the mounting rod, the other end of the two threaded rods is respectively fixedly connected with the ultrasonic partial discharge sensor and the UHF partial discharge sensor, and the connecting rod is fixedly connected with one of the threaded rods.

[0009] Specific, the two elastic assemblies each comprise a fixed block, the two fixed blocks are fixedly connected to the ends of the mounting seat and the mounting rod away from each other, T-shaped sliding grooves are formed in the two fixed blocks, T-shaped sliding blocks are slidably connected in the two T-shaped sliding grooves, one end of the two T-shaped sliding blocks extends out of the fixed block and is fixedly connected with the piezoelectric vibration sensor, springs are arranged in the two T-shaped sliding grooves, and the two ends of the two springs are respectively abutted with the groove wall of the T-shaped sliding groove and the T-shaped sliding block.

[0010] Specific, the power quality acquisition module assembly comprises a power quality acquisition module and a wireless signal connector, the voltage, current, harmonic, and power factor data are acquired through the power quality acquisition module, and are transmitted to the six-in-one comprehensive monitoring terminal through the wireless signal connector.

[0011] Specific, the two ends of the moving hole are arranged through the upper surface and the lower surface of the mounting seat, the moving frame is arranged in a mouth-shaped type, and the moving frame is slidably connected to the mounting seat through the moving hole.

[0012] Specific, the six-in-one comprehensive monitoring terminal is wirelessly connected with the infrared temperature measurement detector, the ultrasonic partial discharge sensor, the UHF partial discharge sensor, the TEV transient voltage sensor, the piezoelectric vibration sensor, and the power quality acquisition module.

[0013] The beneficial effects of the present application: the outdoor high-voltage fault inspection monitoring equipment integrates infrared temperature measurement, multi-dimensional partial discharge, mechanical vibration and power parameter acquisition functions, realizes multi-source data fusion research and judgment through a six-in-one comprehensive monitoring terminal, can accurately identify various hidden dangers such as overheating, insulation partial discharge, mechanical looseness and abnormal electrical parameters of outdoor high-voltage distribution cabinets, effectively reduces the fault omission and misdiagnosis probability, and realizes all-around early warning; the equipment is provided with a screw rod lifting assembly, which can realize reciprocating automatic inspection and fixed-point continuous monitoring dual mode, drive the temperature measurement equipment to traverse the elements in the cabinet, greatly widen the temperature measurement detection range, and make up for the monitoring blind area of the traditional fixed temperature measurement; at the same time, the equipment is provided with an adjustable mounting rod and a moving frame, which can be flexibly adapted to switch cabinets of different specifications, accurately arrange UHF and ultrasonic sensors corresponding to observation windows and cabinet door gaps, and guarantee the partial discharge signal acquisition accuracy; the elastic compression structure can make the vibration sensor always adhere to the inner wall of the cabinet, eliminate the assembly gap interference, and stably collect mechanical vibration data; the TEV sensor adheres to the inner wall of the cabinet door to collect signals, and has excellent coupling effect; the power acquisition module adopts a wireless transmission mode, which avoids the safety hidden danger of CT open circuit caused by traditional wiring dragging; the equipment does not need to change the original wiring of the equipment, is convenient to install, has strong scene adaptability, can automatically complete the outdoor high-voltage equipment inspection and monitoring work, greatly improves the intelligentization and safety of equipment operation and maintenance, and guarantees the stable operation of power grid equipment. BRIEF DESCRIPTION OF DRAWINGS

[0014] The present application will be further described below in combination with the drawings and examples.

[0015] Figure 1 An external structure diagram of an installation state of an outdoor high-voltage fault inspection monitoring equipment provided by the present application is shown in the figure. Figure 2 An external structure diagram of a storage state of an outdoor high-voltage fault inspection monitoring equipment provided by the present application is shown in the figure. Figure 3 A back view structure diagram of an installation state of an outdoor high-voltage fault inspection monitoring equipment provided by the present application is shown in the figure. Figure 4 An explosion view of a mounting seat of an outdoor high-voltage fault inspection monitoring equipment provided by the present application is shown in the figure. Figure 5 An explosion view of a moving frame of an outdoor high-voltage fault inspection monitoring equipment provided by the present application is shown in the figure. Figure 6 A sectional view of an elastic assembly of an outdoor high-voltage fault inspection monitoring equipment provided by the present application is shown in the figure. Figure 7 An installation sectional view of a moving frame of an outdoor high-voltage fault inspection monitoring equipment provided by the present application is shown in the figure.

[0016] In the diagram: 1. Mounting base; 2. Mounting slot; 3. Mounting rod; 4. Infrared temperature detector; 5. Moving hole; 6. Moving frame; 7. Connecting rod; 8. Ultrasonic partial discharge sensor; 9. UHF ultra-high frequency partial discharge sensor; 10. TEV transient ground voltage sensor; 11. Piezoelectric vibration sensor; 12. Six-in-one integrated monitoring terminal; 13. Fixed base; 14. Lifting slot; 15. Gear motor; 16. Lead screw; 17. Lifting block; 18. Threaded hole; 19. Threaded rod; 20. Fixed block; 21. T-shaped slide; 22. T-shaped slider; 23. Spring. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0018] Example 1, such as Figures 1-7 As shown, the present invention provides the following technical solution: An outdoor high-voltage fault inspection and monitoring device includes a mounting base 1 and a lifting assembly. The lifting assembly drives the mounting base 1 to move up and down. The mounting base 1 has a mounting groove 2, and a mounting rod 3 is slidably connected within the mounting groove 2. Infrared temperature detectors 4 are fixedly installed on one side wall of the mounting rod 3 and at the opening of the mounting groove 2. A movable hole 5 is formed through the groove wall of the mounting groove 2, and a movable frame 6 is slidably connected within the movable hole 5. Locking assemblies for fixing the mounting rod 3 and the movable frame 6 are provided on both the mounting groove 2 and the movable frame 6. One of the locking assemblies is fixedly connected to a connecting... The connecting rod 7 is fixedly connected to an ultrasonic partial discharge sensor 8. The two locking components are respectively fixedly installed with another ultrasonic partial discharge sensor 8 and a UHF ultra-high frequency partial discharge sensor 9. The lifting component is equipped with a TEV transient ground voltage sensor 10. The end of the mounting base 1 that is away from the mounting rod 3 is provided with an elastic component, and a piezoelectric vibration sensor 11 is fixedly installed through the elastic component. The top of the lifting component is fixedly installed with a six-in-one integrated monitoring terminal 12, and the six-in-one integrated monitoring terminal 12 is signal connected to a power quality acquisition module component.

[0019] The lifting assembly comprises a fixing seat 13, a lifting groove 14 is formed in the fixing seat 13, a reduction motor 15 is fixedly installed at the top end of the fixing seat 13, a lead screw 16 is rotatably connected in the lifting groove 14 through a bearing, the top end of the lead screw 16 is fixedly connected with the output end of the reduction motor 15 through a shaft coupling, a lifting block 17 is threadedly connected to the wall of the lifting groove 14 at the position of the lead screw 16, one end of the lifting block 17 extends through the fixing seat 13, and the end of the lifting block 17 outside the fixing seat 13 is fixedly connected with the mounting seat 1. The reduction motor 15 drives the lead screw 16 to rotate, the lead screw 16 drives the lifting block 17 to lift, and the lifting block 17 drives the mounting seat 1 to lift.

[0020] The TEV transient voltage sensor 10 is fixedly installed on the side wall of the fixing seat 13 away from the lifting groove 14, and the six-in-one comprehensive monitoring terminal 12 is fixedly installed on the upper surface of the fixing seat 13, so that the fixing seat 13 drives the TEV transient voltage sensor 10 to be combined with the inner wall of the cabinet door for detection after installation.

[0021] The power quality acquisition module assembly comprises a power quality acquisition module and a wireless signal connector. The voltage, current, harmonic, and power factor data are acquired by the power quality acquisition module and transmitted to the six-in-one comprehensive monitoring terminal 12 through the wireless signal connector. The six-in-one comprehensive monitoring terminal 12 is wirelessly connected with the infrared temperature detector 4, the ultrasonic partial discharge sensor 8, the UHF partial discharge sensor 9, the TEV transient voltage sensor 10, the piezoelectric vibration sensor 11, and the power quality acquisition module. The power quality acquisition module is installed in the switch cabinet and collects the voltage, current, harmonic, and power factor data of the electronic components in the switch cabinet. After being transmitted to the six-in-one comprehensive monitoring terminal 12, the data is combined with the data of the infrared temperature detector 4, the ultrasonic partial discharge sensor 8, the UHF partial discharge sensor 9, the TEV transient voltage sensor 10, and the piezoelectric vibration sensor 11, and the total data is transmitted to the master control equipment, which is convenient for judging the real-time state of the switch cabinet outdoors.

[0022] The two ends of the moving hole 5 are respectively arranged through the upper surface and the lower surface of the mounting seat 1. The moving frame 6 is arranged in a mouth-shaped type, and the moving frame 6 is slidably connected to the mounting seat 1 through the moving hole 5. The moving frame 6 is sleeved on the mounting seat 1 at one side of the moving hole 5, so as to move on the mounting seat 1, and the position of the moving frame 6 is fixed when the locking assembly abuts against the mounting seat 1.

[0023] In use, the following steps are taken: Step 1: First, fix the mounting base 13 on the inner wall of the outdoor switchgear door. The TEV transient ground voltage sensor 10 on the mounting base 13 will be in contact with the inner wall of the cabinet door and collect the transient ground voltage signal generated by partial discharge on the cabinet steel plate. The data will be transmitted to the six-in-one integrated monitoring terminal 12 to detect partial discharge in the cabinet insulation and realize early warning of insulation hazards in high-voltage equipment.

[0024] Step 2: After the mounting base 13 is installed, the piezoelectric vibration sensor 11 connected to the elastic component on the mounting base 1 will abut against the inner wall of the cabinet. The mounting rod 3 can be pulled until the piezoelectric vibration sensor 11 connected to the elastic component on the mounting rod 3 abuts against the inner wall of the other side of the cabinet. Then the mounting rod 3 can be fixed by the locking component on the mounting base 1, and the ultrasonic partial discharge sensor 8 is supported so that it is facing the gap between the two cabinet doors.

[0025] Step 3: After the mounting rod 3 moves, the moving hole 5 will be emptied. At this time, the moving frame 6 can be moved in the moving hole 5 and moved to a position that is vertically parallel to the observation window. Then, the moving frame 6 is fixed by the locking component on the moving frame 6 and the UHF partial discharge sensor 9 is supported so that it is opposite to the observation window. At the same time, the other ultrasonic partial discharge sensor 8 is supported by the connecting rod 7 so that it is opposite to the gap at the edge of the observation window.

[0026] Step 4: Close the cabinet door and start the geared motor 15. The geared motor 15 will drive the lead screw 16 to rotate, and the lead screw 16 will drive the lifting block 17 to rise and fall. The lifting block 17 will drive the mounting base 1 to rise and fall synchronously. The infrared temperature detector 4 on the mounting base 1 and the mounting rod 3 will detect the temperature of the components in the switch cabinet and transmit the data to the six-in-one integrated monitoring terminal 12.

[0027] Step 5: During the lifting and lowering process, the mounting base 1 can be stopped at the height corresponding to the observation window position. The UHF partial discharge sensor 9 receives the discharge electromagnetic wave signal through the glass and transmits the data to the six-in-one integrated monitoring terminal 12 (when floating discharge, surface discharge, or internal air gap discharge occurs inside the switchgear, it will radiate ultra-high frequency radio waves outwards; these electromagnetic waves can propagate through the observation window glass of the switchgear). One ultrasonic partial discharge sensor 8 is always aligned with the gap of the switch door, while the other ultrasonic partial discharge sensor 8 is aligned with the gap of the observation window. The ultrasonic partial discharge sensor 8 monitors the surface discharge through the glass. The ultrasonic signals generated by surface discharge, floating discharge, etc., are detected and the data is transmitted to the six-in-one integrated monitoring terminal 12 (when surface discharge, floating discharge, or corona discharge occurs inside the switch cabinet, the discharge will compress the surrounding air and generate high-frequency ultrasonic waves. The sound waves can propagate to the outside of the cabinet through gaps and observation window gaps). At the same time, the elastic component pushes the piezoelectric vibration sensor 11 against the inner wall of the cabinet and collects the vibration amplitude and frequency data, which are transmitted to the six-in-one integrated monitoring terminal 12 (the internal piezoelectric crystal generates charge after being squeezed by mechanical vibration, converting the mechanical vibration into an electrical signal; compared with the normal state, it is determined whether there is a mechanical defect). Step 6: The lifting component drives the equipment to lift and inspect at regular intervals, and can also stop at a fixed height for real-time monitoring, facilitating data collection. At the same time, the power quality acquisition module directly collects voltage, current, harmonics, and power factor data, and transmits them to the six-in-one integrated monitoring terminal 12 through the line signal connector. Combined with the data transmitted to the six-in-one integrated monitoring terminal 12 by the infrared temperature detector 4, ultrasonic partial discharge sensor 8, UHF ultra-high frequency partial discharge sensor 9, TEV transient ground voltage sensor 10, and piezoelectric vibration sensor 11, the six-in-one integrated monitoring terminal 12 comprehensively analyzes overheating faults, insulation partial discharge faults, mechanical loosening and wear faults, and abnormal electrical parameter faults, outputs alarms, and transmits the data to the central control equipment to realize early warning of potential hazards in outdoor high-voltage distribution cabinets.

[0028] Example 2: The technical solutions in this example that differ from Example 1 include: Both locking components include threaded holes 18, which are respectively opened through the groove wall of the mounting groove 2 and the moving frame 6. Threaded rods 19 are threaded into both threaded holes 18. One end of each threaded rod 19 abuts against the mounting base 1 and the mounting rod 3, respectively. The other end of each threaded rod 19 is fixedly connected to the ultrasonic partial discharge sensor 8 and the UHF ultra-high frequency partial discharge sensor 9, respectively. The connecting rod 7 is fixedly connected to one of the threaded rods 19. By rotating the threaded rod 19, it moves in the threaded hole 18 and enters the mounting groove 2 and the moving frame 6. When the threaded rod 19 abuts against the mounting rod 3, it fixes it. When the threaded rod 19 abuts against the mounting base 1, it fixes the moving frame 6.

[0029] Both of the aforementioned elastic components include a fixing block 20, which is fixedly connected to the mounting base 1 and the opposite end of the mounting rod 3. Each fixing block 20 has a T-shaped groove 21, and a T-shaped slider 22 is slidably connected within each T-shaped groove 21. One end of each T-shaped slider 22 extends outside the fixing block 20 and is fixedly connected to the piezoelectric vibration sensor 11. Each T-shaped groove 21 contains a spring 23, with both ends of the spring 23 abutting against the groove wall of the T-shaped groove 21 and the T-shaped slider 22, respectively. The spring 23 within the fixing block 20 pushes the T-shaped slider 22, causing it to move outwards. The T-shaped slider 22 then causes the piezoelectric vibration sensor 11 to abut against the inner wall of the cabinet, thereby detecting the status of the switch cabinet.

Claims

1. An outdoor high-voltage fault inspection and monitoring device, comprising a mounting base (1) and a lifting assembly, characterized in that, The lifting assembly is used to drive the mounting base (1) to lift. The mounting base (1) has a mounting groove (2). A mounting rod (3) is slidably connected in the mounting groove (2). An infrared temperature detector (4) is fixedly installed on one side of the mounting rod (3) and at the opening of the mounting groove (2). A moving hole (5) is opened through the groove wall of the mounting groove (2). A moving frame (6) is slidably connected in the moving hole (5). A locking assembly for fixing the mounting rod (3) and the moving frame (6) is provided on both the mounting groove (2) and the moving frame (6). A connecting rod (7) is fixedly connected to one of the locking assemblies. The connecting rod (7) is fixedly connected to an ultrasonic partial discharge sensor (8). The two locking components are respectively fixedly installed with another ultrasonic partial discharge sensor (8) and a UHF ultra-high frequency partial discharge sensor (9). The lifting component is equipped with a TEV transient ground voltage sensor (10). The end of the mounting base (1) that is far away from the mounting rod (3) is provided with an elastic component, and a piezoelectric vibration sensor (11) is fixedly installed through the elastic component. The top of the lifting component is fixedly installed with a six-in-one integrated monitoring terminal (12), and the six-in-one integrated monitoring terminal (12) is connected to a power quality acquisition module component.

2. The outdoor high-voltage fault inspection and monitoring equipment according to claim 1, characterized in that: The lifting assembly includes a fixed base (13), on which a lifting groove (14) is provided. A geared motor (15) is fixedly installed at the top of the fixed base (13). A lead screw (16) is rotatably connected in the lifting groove (14) through a bearing. The top of the lead screw (16) is fixedly connected to the output end of the geared motor (15) through a coupling. A lifting block (17) is threadedly connected to the rod wall of the lead screw (16) in the lifting groove (14). One end of the lifting block (17) extends through to the outside of the fixed base (13), and the end of the lifting block (17) outside the fixed base (13) is fixedly connected to the mounting base (1).

3. The outdoor high-voltage fault inspection and monitoring equipment according to claim 1, characterized in that: The TEV transient ground voltage sensor (10) is fixedly installed on the side wall of the fixed base (13) away from the lifting groove (14), and the six-in-one integrated monitoring terminal (12) is fixedly installed on the upper surface of the fixed base (13).

4. The outdoor high-voltage fault inspection and monitoring equipment according to claim 1, characterized in that: Both locking components include threaded holes (18), which are respectively opened through the groove wall of the mounting groove (2) and the moving frame (6). Each of the two threaded holes (18) is threaded with a threaded rod (19). One end of each threaded rod (19) abuts against the mounting base (1) and the mounting rod (3), respectively. The other end of each threaded rod (19) is fixedly connected to the ultrasonic partial discharge sensor (8) and the UHF ultra-high frequency partial discharge sensor (9), respectively. The connecting rod (7) is fixedly connected to one of the threaded rods (19).

5. The outdoor high-voltage fault inspection and monitoring equipment according to claim 1, characterized in that: Both of the elastic components include a fixing block (20). The two fixing blocks (20) are respectively fixedly connected to the mounting base (1) and the opposite end of the mounting rod (3). Both fixing blocks (20) are provided with T-shaped grooves (21). T-shaped sliders (22) are slidably connected in both T-shaped grooves (21). One end of each T-shaped slider (22) extends outside the fixing block (20) and is fixedly connected to the piezoelectric vibration sensor (11). Springs (23) are provided in both T-shaped grooves (21), and the two ends of each spring (23) abut against the groove wall of the T-shaped groove (21) and the T-shaped slider (22) respectively.

6. The outdoor high-voltage fault inspection and monitoring equipment according to claim 1, characterized in that: The power quality acquisition module component includes a power quality acquisition module and a wireless signal connector. The power quality acquisition module acquires voltage, current, harmonics and power factor data, and transmits them to the six-in-one integrated monitoring terminal (12) through the wireless signal connector.

7. The outdoor high-voltage fault inspection and monitoring equipment according to claim 1, characterized in that: The two ends of the movable hole (5) are respectively set through the upper and lower surfaces of the mounting base (1). The movable frame (6) is set in a square shape and is slidably connected to the mounting base (1) through the movable hole (5).

8. The outdoor high-voltage fault inspection and monitoring equipment according to claim 1, characterized in that: The six-in-one integrated monitoring terminal (12) is wirelessly connected to the infrared temperature detector (4), the ultrasonic partial discharge sensor (8), the UHF ultra-high frequency partial discharge sensor (9), the TEV transient ground voltage sensor (10), the piezoelectric vibration sensor (11), and the power quality acquisition module.

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