CN114609484A - Partial discharge on-line detection system for power transmission and transformation equipment - Google Patents
Partial discharge on-line detection system for power transmission and transformation equipment Download PDFInfo
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- CN114609484A CN114609484A CN202210086758.6A CN202210086758A CN114609484A CN 114609484 A CN114609484 A CN 114609484A CN 202210086758 A CN202210086758 A CN 202210086758A CN 114609484 A CN114609484 A CN 114609484A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
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- Testing Relating To Insulation (AREA)
Abstract
The invention relates to the technical field of detection systems, and provides an on-line detection system for partial discharge of power transmission and transformation equipment, which realizes the carrying of a current sensor, can be well suitable for detecting a bracket in a high-altitude medium-high voltage cable, can automatically move for detection operation, can smoothly cross a fulcrum on the cable, and has better practicability, and comprises the current sensor, the current sensor is connected with an amplifying module and a phase detection module, the amplifying module and the phase detection module are connected with a data acquisition unit, the data acquisition unit is sleeved with a computer terminal in a matching way, the on-line detection system also comprises a main body frame, the top end of the main body frame is fixedly connected with a U-shaped frame, a U-shaped cavity is arranged in the U-shaped frame, the current sensor, the amplifying module, the phase detection module and the data acquisition unit are all arranged in the U-shaped cavity, the left end and the right end of the main body frame are both connected with a traveling frame, the traveling frame is connected with a disc frame, the main body frame is provided with a servo motor for driving the disc frame, and the disc frame is internally provided with a lifting frame through an electric lifting rod.
Description
Technical Field
The invention relates to the technical field of detection systems, in particular to an online detection system for partial discharge of power transmission and transformation equipment.
Background
As is well known, a power cable is one of the core power transmission devices in a power transmission and transformation device, and whether the operation state of the power cable is normal or not determines the safe and normal supply of power, so as to provide an online detection system for partial discharge of the power transmission and transformation device in order to ensure the supervision of the power cable in the daily operation process.
Through retrieval, chinese patent publication No. CN201955439U, published 31/2011 at 08/2011, discloses an online partial discharge detection system, which is roughly described as including a current sensor for detecting a medium-high voltage cable, wherein an output end of the current sensor is connected to input ends of an amplification module and a phase detection module, output ends of the amplification module and the phase detection module are connected to input ends of a data acquisition unit, and an output end of the data acquisition unit is connected to a computer terminal.
Although the partial discharge online detection system can detect the medium-high voltage cable from the design concept, the medium-high voltage cable is usually positioned at the high altitude through a steel frame bracket, so that a current sensor of the partial discharge online detection system is short of a necessary carrier for high-altitude detection, and the actual operation is difficult.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the power transmission and transformation equipment partial discharge online detection system which realizes the carrying of the current sensor, can be better suitable for the detection of a bracket on a high-altitude medium-high voltage cable, can realize autonomous mobile detection operation, can smoothly cross a fulcrum on the cable and has better practicability.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: an on-line detection system for partial discharge of power transmission and transformation equipment comprises a current sensor, wherein the current sensor is connected with an amplification module and a phase detection module, the amplification module and the phase detection module are connected with a data acquisition unit, the data acquisition unit is sleeved with a computer terminal in a matching manner, the on-line detection system further comprises a main body frame, the top end of the main body frame is fixedly connected with a U-shaped frame, a U-shaped cavity is arranged in the U-shaped frame, the current sensor, the amplification module, the phase detection module and the data acquisition unit are all arranged in the U-shaped cavity, the left end and the right end of the main body frame are fixedly connected with a traveling frame, the traveling frame is rotationally connected with a disc frame, a servo motor used for driving the disc frame is arranged at the bottom end of the main body frame, a lifting frame is arranged in the disc frame through an electric lifting rod, the lifting frame is fixedly connected with a front connecting lug and a rear connecting lug, the front rotating frame and the rear rotating frame are respectively rotationally connected in the front connecting lug and the rear connecting lug, the front rotating frame and the rear rotating frame are provided with a front half cone pulley and a rear half cone pulley which are matched with each other at one end close to each other, the front rotating frame is provided with a driving motor for driving the front half cone pulley, and the lifting frame is provided with a driving system for opening and closing the front rotating frame and the rear rotating frame in a rotating mode.
On the basis of the scheme, the driving system comprises a small servo motor and two mutually matched driving frames, the small servo motor is installed on the lifting frame, a gear roller is installed on an output shaft of the small servo motor, the two driving frames are connected in the lifting frame in a sliding mode, racks meshed with the gear roller are fixedly connected to the two driving frames, gear arc strips are meshed to the two driving frames, and the gear arc strips are fixedly connected with the front rotating frame and the rear rotating frame respectively.
On the basis of the scheme, preferably, the bottom end of the main body frame is rotatably connected with a rotating disc, and a wind driven generator is mounted at the bottom end of the rotating disc.
On the basis of the scheme, the bottom end of the lifting frame is fixedly connected with a plurality of arc guide strips, an arc guide opening is formed in the tray frame, and the arc guide strips are connected in the arc guide opening in a sliding mode.
On the basis of the scheme, furthermore, a bevel gear is installed on an output shaft of the servo motor, and a bevel gear ring meshed with the bevel gear is fixedly connected to the bottom end of the disk rack.
On the basis of the scheme, the rear end of the front half cone pulley is fixedly connected with a gradual change guide prism, and the front end of the rear half cone pulley is provided with a gradual change guide groove matched with the gradual change guide prism.
As a further aspect of the above scheme, the bottom ends of the two traveling frames are fixedly connected with two diagonal support legs, and the bottom ends of the two diagonal support legs are lower than the bottommost end of the wind driven generator.
As a further improvement of the above scheme, a power battery is installed in the main body frame, the wind driven generator is connected with the power battery through a voltage stabilizer, and the servo motor, the driving motor, the small servo motor and the electric lifting rod are electrically connected with the power battery.
As a further aspect of the above solution, a 5G communication module is installed in the main body frame.
As a further proposal of the proposal, the front half cone pulley and the rear half cone pulley are both provided with anti-skid lines.
(III) advantageous effects
Compared with the prior art, the invention provides an online detection system for partial discharge of power transmission and transformation equipment, which has the following beneficial effects:
1. according to the invention, the main body frame and the U-shaped frame are matched, so that the carrying of the current sensor, the amplifying module, the phase detection module and the data acquisition unit is convenient to realize, and the device can be better suitable for the detection of the bracket on the high-altitude medium-high voltage cable.
2. According to the invention, the drive motor, the front half cone pulley and the rear half cone pulley are matched, so that the partial discharge online detection system of the power transmission and transformation equipment can move relative to the high-voltage cable conveniently, and therefore, the autonomous mobile detection operation is realized.
3. According to the invention, through the matching of the driving system, the synchronous movement of the front rotating frame relative to the lifting frame and the synchronous movement of the rear rotating frame relative to the lifting frame are conveniently realized, so that the relative movement of the front half cone pulley and the rear half cone pulley which are matched with each other is facilitated, through the matching of the advancing frame and the disc frame, the rotation of the main body frame relative to the power cable can be realized, so that the rotation crossing type advancing of the partial discharge online detection system of the power transmission and transformation equipment on the power cable can be realized, further, the obstacles such as pivots on the cable can be conveniently crossed, and the practicability is better.
Drawings
FIG. 1 is a partially cut-away perspective view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1A;
FIG. 3 is a schematic perspective view of the present invention;
FIG. 4 is a schematic view of an exploded perspective view of the driving rack, the geared roller and the rack of the present invention;
FIG. 5 is a bottom perspective view of the present invention;
fig. 6 is a schematic view of a portion of the enlarged structure at B in fig. 5 according to the present invention.
In the figure: 1. a main body frame; 2. a U-shaped frame; 3. a traveling frame; 4. a tray frame; 5. a lifting frame; 6. a front engaging lug; 7. a rear connecting lug; 8. a front rotating frame; 9. a rear rotating frame; 10. a front half cone pulley; 11. a rear half cone pulley; 12. a driving frame; 13. a gear roll; 14. a rack; 15. a gear arc bar; 16. rotating the disc; 17. an arc-shaped guide strip; 18. a bevel gear; 19. a conical gear ring; 20. a tapered guiding prism; 21. a diagonal bracing leg; 22. and (4) anti-skid lines.
Detailed Description
Examples
Referring to fig. 1-6, an online detection system for partial discharge of power transmission and transformation equipment comprises a current sensor, the current sensor is connected with an amplification module and a phase detection module, the amplification module and the phase detection module are connected with a data acquisition unit, the data acquisition unit is provided with a computer terminal in a matching manner, the online detection system further comprises a main body frame 1, the bottom end of the main body frame 1 is rotatably connected with a rotating disc 16, the bottom end of the rotating disc 16 is provided with a wind driven generator, wind energy is fully utilized, the cruising ability of a power battery is effectively improved, the main body frame 1 is internally provided with the power battery, the wind driven generator is connected with the power battery through a voltage stabilizer, a servo motor, a driving motor, a small servo motor and an electric lifting rod are electrically connected with the power battery, the main body frame 1 is internally provided with a 5G communication module, the information interaction and conduction with the computer terminal are realized, the top end of the main body frame 1 is fixedly connected with a U-shaped frame 2, the main body frame 1 and the U-shaped frame 2 are matched, so that the carrying of a current sensor, an amplifying module, a phase detection module and a data acquisition unit is convenient to realize, and the high-voltage cable detection system can be well suitable for detecting a support in high altitude, a U-shaped cavity is arranged in the U-shaped frame 2, the current sensor, the amplifying module, the phase detection module and the data acquisition unit are all arranged in the U-shaped cavity, the left end and the right end of the main body frame 1 are fixedly connected with a traveling frame 3, the bottom ends of the two traveling frames 3 are fixedly connected with two inclined support legs 21, the bottom ends of the two inclined support legs 21 are lower than the bottommost end of a wind driven generator, the integral support of the partial discharge online detection system of the power transmission and transformation equipment is realized, the protection of the wind driven generator is improved, the disc frame 4 is rotatably connected in the traveling frame 3, a servo motor for driving the disc frame 4 is arranged at the bottom end of the main body frame 1, and a bevel gear 18 is arranged on an output shaft of the servo motor, the bottom end of the disk rack 4 is fixedly connected with a bevel gear ring 19 meshed with the bevel gear 18, and the main body rack 1 can rotate relative to the power cable through the matching of the traveling rack 3 and the disk rack 4, so that the partial discharge online detection system of the power transmission and transformation equipment can rotate in a crossing mode on the power cable, and then obstacles such as fulcrums on the cable can be conveniently crossed, and the practicability is good.
It should be further explained that a lifting frame 5 is installed in the tray frame 4 through an electric lifting rod, the bottom end of the lifting frame 5 is fixedly connected with a plurality of arc-shaped guide strips 17, an arc-shaped guide opening is formed in the tray frame 4, the arc-shaped guide strips 17 are slidably connected in the arc-shaped guide openings, the directionality of the lifting frame 5 relative to the tray frame 4 in the up-and-down movement process is improved, the lifting frame 5 is fixedly connected with a front connecting lug 6 and a rear connecting lug 7, a front rotating frame 8 and a rear rotating frame 9 are respectively and rotatably connected in the front connecting lug 6 and the rear connecting lug 7, the front rotating frame 8, the rear rotating frame 9 and the lifting frame 5 are matched to realize mutual approaching or separating of the front half cone pulley 10 and the rear half cone pulley 11 which are matched with each other, so as to conveniently realize the installation and the detachment of the local discharge online detection system of the power transmission and transformation equipment on the power cable, the front rotating frame 8 and the rear rotating frame 9 are respectively provided with the front half cone pulley 10 and the rear cone pulley 11 which are matched with each other at the ends which are close to each other, the front half cone pulley 10 and the rear half cone pulley 11 are both provided with anti-skid grains 22, the rear end of the front half cone pulley 10 is fixedly connected with a gradual change guide prism 20, the front end of the rear half cone pulley 11 is provided with a gradual change guide groove matched with the gradual change guide prism 20, the mutual splicing smoothness of the front half cone pulley 10 and the rear half cone pulley 11 is improved, and the rotation synchronism of the front half cone pulley 10 and the rear half cone pulley 11 is improved, the front rotary frame 8 is provided with a driving motor for driving the front half cone pulley 10, through the matching of the driving motor, the front half cone pulley 10 and the rear half cone pulley 11, the movement of the power transmission and transformation equipment local discharge online detection system relative to a high-voltage cable is conveniently realized, thereby the autonomous mobile detection operation is realized, the crane 5 is provided with a driving system for the mutual rotation opening and rotation closing of the front rotary frame 8 and the rear rotary frame 9, the driving system comprises a small servo motor and two mutually matched driving frames 12, servo small motor installs on crane 5, install gear roller 13 on servo small motor's the output shaft, two equal sliding connection of drive frame 12 are in crane 5, equal fixedly connected with and gear roller 13 meshed rack 14 on two drive frames 12, all meshed gear arc 15 on two drive frames 12, two gear arc 15 respectively with preceding rotating turret 8 and back rotating turret 9 fixed connection, cooperation through actuating system, be convenient for realize preceding rotating turret 8 respectively for crane 5 and back rotating turret 9 respectively for crane 5's synchronous motion, thereby be convenient for the relative motion of half preceding cone pulley 10 of mutually supporting and half back cone pulley 11.
In summary, before the online detection system for partial discharge of power transmission and transformation equipment is used, firstly, the electric quantity of a power battery is checked, an electric quantity indicator lamp is matched on the power battery, if the electric quantity of the power battery is low, the power battery is charged firstly, then, the online detection system for partial discharge of the power transmission and transformation equipment is improved to be close to a power cable, then, a small servo motor is controlled to work to drive a gear roller 13 to rotate, the gear roller 13 drives two driving frames 12 to move relative to a lifting frame 5 through a rack 14, the two driving frames 12 are close to each other and drive a front rotating frame 8 and a rear rotating frame 9 to rotate away from each other through two gear arcs 15, a front half cone pulley 10 and a rear plate cone pulley which are matched with each other are separated from each other and are away from each other, the position of the online detection system for partial discharge of the power transmission and transformation equipment relative to the power cable is adjusted, so that the power cable is positioned in an area between the front rotating frame 8 and the rear rotating frame 9, the small servo motor is controlled to work again, the front half cone pulley 10 and the rear half cone pulley 11 which are mutually matched are enabled to rotate and approach to each other until the front half cone pulley 10 and the rear half cone pulley 11 which are mutually matched are contacted with each other again, so that the whole partial discharge on-line detection system of the power transmission and transformation equipment is mounted on a power cable, the rotation of the front half cone pulley 10 is realized by controlling the work of the driving motor, the synchronous driving of the rear half cone pulley 11 is realized by the front half cone pulley 10 through the gradual change guide prism 20, the synchronous motion of the front half cone pulley 10 and the rear half cone pulley 11 is realized by controlling the mutual separation of a group of the front half cone pulley 10 and the rear half cone pulley 11 which are mutually matched and far away from the obstacle in two groups, when the power cable is provided with the obstacle such as a fulcrum, then the group of the front half cone pulley 10 and the rear half cone pulley 11 which are mutually far away from the obstacle is controlled to descend through the work of the electric lifting rod, then the rotation of the whole frame relative to the power cable is realized through the relative rotation of the disc frame 4 connected with the other group of the front half cone pulley 10 and the rear half cone pulley 11 which are matched with each other and the travelling frame 3, when one group of the front half cone pulley 10 and the rear half cone pulley 11 which are separated from each other is away from the power cable firstly, then after the group of the front half cone pulley 10 and the rear half cone pulley 11 which are separated from each other is close to the power cable, the front half cone pulley 10 and the rear half cone pulley 11 which are separated from each other are lifted by controlling one electric lifting rod which can control the front half cone pulley 10 and the rear half cone pulley 11 which are separated from each other to be lifted, then the front half cone pulley 10 and the rear half cone pulley 11 which are separated from each other are controlled to be close to each other, thereby realizing the re-clasping relative to the power cable again, according to the steps, the separation and the re-clasping of the power cable of the other group of the front half cone pulley 10 and the rear cone pulley 11 which are matched with each other can realize the spanning of obstacles such as supporting points and the like, and then, continuing to carry out movement detection.
Claims (10)
1. An on-line detection system for partial discharge of power transmission and transformation equipment comprises a current sensor, wherein the current sensor is connected with an amplification module and a phase detection module, the amplification module and the phase detection module are connected with a data acquisition unit, and the data acquisition unit is matched with a computer terminal, and the on-line detection system is characterized by further comprising a main body frame (1), the top end of the main body frame (1) is fixedly connected with a U-shaped frame (2), a U-shaped cavity is arranged in the U-shaped frame (2), the current sensor, the amplification module, the phase detection module and the data acquisition unit are all arranged in the U-shaped cavity, the left end and the right end of the main body frame (1) are both fixedly connected with a traveling frame (3), the traveling frame (3) is rotatably connected with a disc frame (4), a servo motor used for driving the disc frame (4) is arranged at the bottom end of the main body frame (1), and a lifting frame (5) is arranged in the disc frame (4) through an electric lifting rod, connect ear (6) and back engaging lug (7) before crane (5) fixedly connected with, rotate respectively in preceding engaging lug (6) and back engaging lug (7) and be connected with preceding rotating turret (8) and back rotating turret (9), preceding half cone pulley (10) and back half cone pulley (11) of mutually supporting are installed respectively to the one end that is close to each other of preceding rotating turret (8) and back rotating turret (9), install on preceding rotating turret (8) and be used for preceding half cone pulley (10) driven driving motor, install on crane (5) and be used for preceding rotating turret (8) and back rotating turret (9) rotation to open and rotate closed actuating system.
2. The electric transmission and transformation equipment partial discharge online detection system according to claim 1, characterized in that the driving system comprises a small servo motor and two driving frames (12) matched with each other, the small servo motor is installed on the lifting frame (5), a gear roller (13) is installed on an output shaft of the small servo motor, the two driving frames (12) are both slidably connected in the lifting frame (5), a rack (14) meshed with the gear roller (13) is fixedly connected to each of the two driving frames (12), gear arc bars (15) are meshed to each of the two driving frames (12), and the two gear arc bars (15) are respectively fixedly connected with the front rotating frame (8) and the rear rotating frame (9).
3. The on-line partial discharge detection system for the electric transmission and transformation equipment is characterized in that a rotating disc (16) is rotatably connected to the bottom end of the main body frame (1), and a wind driven generator is mounted at the bottom end of the rotating disc (16).
4. The electric transmission and transformation equipment partial discharge online detection system according to claim 3, characterized in that the bottom end of the lifting frame (5) is fixedly connected with a plurality of arc-shaped guide strips (17), the tray frame (4) is provided with arc-shaped guide openings, and the arc-shaped guide strips (17) are slidably connected in the arc-shaped guide openings.
5. The online detection system for partial discharge of power transmission and transformation equipment according to claim 4, wherein a bevel gear (18) is installed on an output shaft of the servo motor, and a bevel gear ring (19) meshed with the bevel gear (18) is fixedly connected to the bottom end of the tray frame (4).
6. The on-line detection system for partial discharge of electric transmission and transformation equipment according to claim 5, characterized in that a gradual change guide prism (20) is fixedly connected to the rear end of the front half cone pulley (10), and a gradual change guide groove matched with the gradual change guide prism (20) is formed at the front end of the rear half cone pulley (11).
7. The online partial discharge detection system for the electric transmission and transformation equipment as claimed in claim 6, wherein two diagonal support legs (21) are fixedly connected to the bottom ends of the two traveling frames (3), and the bottom ends of the two diagonal support legs (21) are lower than the bottommost end of the wind driven generator.
8. The on-line detection system for partial discharge of electric transmission and transformation equipment according to claim 7, wherein a power battery is installed in the main body frame (1), the wind driven generator is connected with the power battery through a voltage stabilizer, and the servo motor, the driving motor, the small servo motor and the electric lifting rod are electrically connected with the power battery.
9. The on-line detection system for partial discharge of electric transmission and transformation equipment according to claim 8, characterized in that a 5G communication module is installed in the main body frame (1).
10. The on-line partial discharge detection system for the electric transmission and transformation equipment as recited in claim 9, wherein the front half cone pulley (10) and the rear half cone pulley (11) are provided with anti-skid grains (22).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210086758.6A CN114609484A (en) | 2022-01-25 | 2022-01-25 | Partial discharge on-line detection system for power transmission and transformation equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210086758.6A CN114609484A (en) | 2022-01-25 | 2022-01-25 | Partial discharge on-line detection system for power transmission and transformation equipment |
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| CN114609484A true CN114609484A (en) | 2022-06-10 |
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| CN202210086758.6A Pending CN114609484A (en) | 2022-01-25 | 2022-01-25 | Partial discharge on-line detection system for power transmission and transformation equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117092456A (en) * | 2023-01-12 | 2023-11-21 | 特变电工山东鲁能泰山电缆有限公司 | Power cable partial discharge detection device and power failure detection system |
| CN117572177A (en) * | 2024-01-10 | 2024-02-20 | 山东北天极能源科技有限公司 | Support type cable partial discharge monitoring device |
-
2022
- 2022-01-25 CN CN202210086758.6A patent/CN114609484A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117092456A (en) * | 2023-01-12 | 2023-11-21 | 特变电工山东鲁能泰山电缆有限公司 | Power cable partial discharge detection device and power failure detection system |
| CN117092456B (en) * | 2023-01-12 | 2024-05-07 | 特变电工山东鲁能泰山电缆有限公司 | Power cable partial discharge detection device and power failure detection system |
| CN117572177A (en) * | 2024-01-10 | 2024-02-20 | 山东北天极能源科技有限公司 | Support type cable partial discharge monitoring device |
| CN117572177B (en) * | 2024-01-10 | 2024-04-05 | 山东北天极能源科技有限公司 | Support type cable partial discharge monitoring device |
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