CN112540271A - Method and device for detecting partial discharge of cable - Google Patents
Method and device for detecting partial discharge of cable Download PDFInfo
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- CN112540271A CN112540271A CN202011311659.0A CN202011311659A CN112540271A CN 112540271 A CN112540271 A CN 112540271A CN 202011311659 A CN202011311659 A CN 202011311659A CN 112540271 A CN112540271 A CN 112540271A
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- 238000000034 method Methods 0.000 title claims description 34
- 238000001514 detection method Methods 0.000 claims abstract description 35
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 244000261422 Lysimachia clethroides Species 0.000 claims abstract description 16
- 238000013016 damping Methods 0.000 claims abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 239000000741 silica gel Substances 0.000 claims description 14
- 229910002027 silica gel Inorganic materials 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 7
- 239000000428 dust Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
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- 230000009286 beneficial effect Effects 0.000 description 2
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- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 240000005572 Syzygium cordatum Species 0.000 description 1
- 235000006650 Syzygium cordatum Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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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
-
- 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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
-
- 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
- G01R31/1209—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 using acoustic measurements
Abstract
The invention relates to the technical field of cable partial discharge detection, and discloses a detection device for cable partial discharge, which comprises an electric telescopic rod, wherein a detection mechanism is arranged at the top of the electric telescopic rod; the detection mechanism comprises a damping bearing, a display screen, a gooseneck, a first curved plate, a rotating shaft, a torsion spring, a second curved plate, a groove, a fixing plate, an ultrahigh frequency sensor and an acousto-magnetic sensor; the top of the electric telescopic rod is rotatably connected with a damping bearing. According to the invention, through the gooseneck tube and the electric telescopic rod on the display screen and the ultrahigh frequency sensor and the acoustic magnetic sensor on the first curved plate, the cable can be subjected to discharge detection by utilizing the ultrahigh frequency sensor and the acoustic magnetic sensor, so that the accuracy of the discharge detection of the cable is improved, and the detection mechanism can be positioned and moved through the gooseneck tube, so that the detection mechanism is more labor-saving to move, and moreover, the detection mechanism can be moved up and down through the electric telescopic rod, so that the cables with different heights can be detected.
Description
Technical Field
The invention relates to the technical field of cable partial discharge detection, in particular to a method and a device for detecting cable partial discharge.
Background
With the development of power grids and the need of urban environmental management, the crosslinked polyethylene power cable has strong acid and alkali resistance and corrosion resistance due to reasonable process and structure, is simple to install and lay, and is widely applied due to less operation and maintenance work, but the power cable is easy to suffer from electric branch aging, water tree aging and the like due to long-term operation underground, moisture, dirt, damage to people and vehicles and the like and the action of voltage. The insulation aging of the cable causes the reduction of the insulation resistance of the cable, the increase of the leakage cable and the breakdown fault finally, which causes huge loss.
Patent No. CN201410387603.1 discloses a method and an apparatus for detecting partial discharge of a cable. Wherein, the method comprises the following steps: coupling a coupling signal from a tested cable through a coupling sensor; performing signal conditioning analysis on the coupling signal to obtain a partial discharge signal on the tested cable; and determining the position of the partial discharge on the tested cable by using the partial discharge signal. According to the invention, the problem of low accuracy of detecting the partial discharge in the prior art is solved, and the effect of accurately monitoring the partial discharge position of the tested cable is realized.
However, the existing method and device for detecting partial discharge of a cable have a single detection mode, cannot detect by using various detection instruments, and then compare the detection modes, so that the detection accuracy is improved, and in the detection process, the method and device are labor-consuming, cannot conveniently detect the cable, cannot adjust the height of the device, and are suitable for cables with different heights.
Disclosure of Invention
The invention aims to provide a method and a device for detecting partial discharge of a cable, which solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a detection device for partial discharge of a cable comprises an electric telescopic rod, wherein a detection mechanism is arranged at the top of the electric telescopic rod;
the detection mechanism comprises a damping bearing, a display screen, a gooseneck, a first curved plate, a rotating shaft, a torsion spring, a second curved plate, a groove, a fixing plate, an ultrahigh frequency sensor and an acousto-magnetic sensor; the utility model discloses a torque spring, including electric telescopic handle, damping bearing top fixedly connected with display screen, the one end of display screen right side fixedly connected with gooseneck, the first bent plate of other end fixedly connected with of gooseneck, both ends are all rotated about the first bent plate and are connected with the pivot, torque spring has been cup jointed in the pivot outside, and the bent plate of torque spring right side fixedly connected with second, recess has been seted up at first bent plate right side middle part, the inside fixedly connected with fixed plate of recess, both ends difference fixedly connected with hyperfrequency sensor and acoustic magnetic sensor about the fixed plate right side.
As a preferred embodiment of the present invention, three square grooves are equidistantly formed in the inner wall of the second curved plate, fixing rods are fixedly connected to the three square grooves, and a silicone cylinder penetrates through the outer side of each fixing rod.
As a preferred embodiment of the present invention, a cavity is opened inside the second curved plate, and an electromagnetic shielding film is fixedly connected inside the cavity.
In a preferred embodiment of the present invention, the control buttons are movably connected to both left and right ends of the bottom of the front side of the display screen, and the pulse discharge detector is fixedly connected to the bottom of the front side of the display screen.
As a preferred embodiment of the present invention, a storage battery is bolted to the top of the front side of the electric telescopic rod, a charging hole is opened on the front side of the storage battery, the charging hole is electrically connected to the storage battery, and handles are welded to the bottoms of the left and right sides of the electric telescopic rod.
As a preferred embodiment of the present invention, the storage battery is electrically connected to the display screen, the ultra-high frequency sensor, the acousto-magnetic sensor, the electric telescopic rod and the pulse discharge detector, and the display screen is in signal connection with the ultra-high frequency sensor, the acousto-magnetic sensor and the pulse discharge detector.
In a preferred embodiment of the present invention, a method for detecting partial discharge of a cable, using the apparatus for detecting partial discharge of a cable, comprises the steps of:
s1: firstly, fully charging the storage battery through the charging hole, then connecting the ultrahigh frequency sensor, the acousto-magnetic sensor, the pulse discharge detector and the electric telescopic rod with an external control switch through signals, moving the two second curved plates through the torsion spring and the rotating shaft after the connection is finished, sleeving the cable into the two second curved plates, and then turning on the ultrahigh frequency sensor and the acousto-magnetic sensor;
s2: sliding the first curved plate and the second curved plate on the surface of the cable, enabling a silica gel cylinder to pass through a fixed rod in the sliding process of the second curved plate, rotating the silica gel cylinder on the surface of the cable, adsorbing and cleaning dust on the surface of the cable by using the silica gel cylinder, then turning on a pulse discharge detector, detecting the discharge of the cable by using the pulse discharge detector, and displaying the detected result on a display screen;
s3: when needs examine not co-altitude cable, can open electric telescopic handle, utilize electric telescopic handle to adjust detection mechanism's height, set up electromagnetic shielding film inside the bent shape board of second, avoided discharging the in-process that detects, received electromagnetic interference.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the method and the device for detecting the partial discharge of the cable, the ultrahigh frequency sensor and the acoustic magnetic sensor are arranged on the gooseneck tube and the electric telescopic rod on the display screen and the ultrahigh frequency sensor and the acoustic magnetic sensor on the first curved plate, so that the cable can be simultaneously subjected to discharge detection by the ultrahigh frequency sensor and the acoustic magnetic sensor, the accuracy of the discharge detection of the cable is improved, the detection mechanism can be positioned and moved through the gooseneck tube, the detection mechanism is more labor-saving to move, and the detection mechanism can be moved up and down through the electric telescopic rod, so that the cables with different heights can be detected, and the method and the device for detecting the partial discharge of the cable.
2. According to the invention, the first curved plate and the second curved plate can be utilized to clamp the cable due to the square groove on the inner wall of the second curved plate, the silica gel cylinder in the square groove and the torsion spring on the rotating shaft, so that the cable can slide outside cables with different thicknesses, the detection convenience is improved, the curved plate can conveniently move on the cable through the silica gel cylinder in the second curved plate, meanwhile, the silica gel cylinder can be utilized to adsorb and clean dust on the surface of the cable, and the method and the device for detecting the partial discharge of the cable are more practical.
3. According to the invention, the cavity and the electromagnetic shielding film are arranged in the second curved plate, so that the electromagnetic shielding film can be arranged in the second curved plate, the electromagnetic interference in the discharge detection process is avoided, and the method and the device for detecting the partial discharge of the cable are more practical.
4. The pulse discharge detector is arranged on the front side of the display screen, the pulse transmission reflection principle is utilized to detect the back-and-forth transmission condition and the time difference of the same pulse in the cable, and the partial discharge source position is determined by comparison and identification, so that the cable discharge position is detected, and the cable discharge position can be simultaneously detected in various modes by matching with the ultrahigh frequency sensor and the acousto-magnetic sensor, thereby being beneficial to more practically using the method and the device for detecting the partial discharge of the cable.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic view of the overall structure of a method and apparatus for detecting partial discharge of a cable according to the present invention;
fig. 2 is a schematic side view of a first curved plate of the method and apparatus for detecting partial discharge of a cable according to the present invention;
FIG. 3 is a schematic diagram of an inner wall structure of a second curved plate of the method and apparatus for detecting partial discharge of a cable according to the present invention;
fig. 4 is a schematic view of a cavity structure of a method and an apparatus for detecting partial discharge of a cable according to the present invention.
In the figure: 1. an electric telescopic rod; 2. a damping bearing; 3. a display screen; 4. a control button; 5. a pulse discharge detector; 6. a handle; 7. a storage battery; 8. a charging hole; 9. a gooseneck; 10. a first curved plate; 11. a rotating shaft; 12. a torsion spring; 13. a second curved plate; 14. a groove; 15. a fixing plate; 16. an ultrahigh frequency sensor; 17. an acoustic-magnetic sensor; 18. a square groove; 19. fixing the rod; 20. a silica gel cylinder; 21. a cavity; 22. an electromagnetic shielding film.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention; in the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can, for example, be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-4, the present invention provides a technical solution: a detection device for partial discharge of a cable comprises an electric telescopic rod 1, wherein a detection mechanism is arranged at the top of the electric telescopic rod 1;
the detection mechanism comprises a damping bearing 2, a display screen 3, a gooseneck 9, a first curved plate 10, a rotating shaft 11, a torsion spring 12, a second curved plate 13, a groove 14, a fixing plate 15, an ultrahigh frequency sensor 16 and a magneto-acoustic sensor 17; 1 top of electric telescopic handle rotates and is connected with damping bearing 2, 2 top fixedly connected with display screens 3 of damping bearing, the one end of 3 right sides fixedly connected with gooseneck 9 of display screen, the first curved plate 10 of the other end fixedly connected with of gooseneck 9, both ends are all rotated about first curved plate 10 and are connected with pivot 11, torque spring 12 has been cup jointed in the pivot 11 outside, and the curved plate 13 of 12 right sides fixedly connected with second of torque spring, recess 14 has been seted up at the middle part of 10 right sides of first curved plate, the inside fixedly connected with fixed plate 15 of recess 14, both ends difference fixedly connected with hyperfrequency sensor 16 and sound magnetic sensor 17 about the fixed plate 15 right side.
In this embodiment, referring to fig. 1, three square grooves 18 are equidistantly formed in the inner wall of the second curved plate 13, fixing rods 19 are fixedly connected inside the three square grooves 18, and a silica gel tube 20 penetrates through the outer side of the fixing rods 19.
Referring to fig. 1 in this embodiment, a cavity 21 is formed inside the second curved plate 13, and an electromagnetic shielding film 22 is fixedly connected inside the cavity 21.
Referring to fig. 1 in this embodiment, control buttons 4 are movably connected to both left and right ends of a bottom of a front side of the display screen 3, and a pulse discharge detector 5 is fixedly connected to a bottom of the front side of the display screen 3.
Referring to fig. 1 in the embodiment, a storage battery 7 is bolted to the top of the front side of the electric telescopic rod 1, a charging hole 8 is formed in the front side of the storage battery 7, the charging hole 8 is electrically connected with the storage battery 7, and handles 6 are welded to the bottoms of the left side and the right side of the electric telescopic rod 1.
In the embodiment, referring to fig. 1, the storage battery 7 is electrically connected to the display screen 3, the ultrahigh frequency sensor 16, the acousto-magnetic sensor 17, the electric telescopic rod 1 and the pulse discharge detector 5, and the display screen 3 is in signal connection with the ultrahigh frequency sensor 16, the acousto-magnetic sensor 17 and the pulse discharge detector 5.
In the embodiment, referring to fig. 1, a method for detecting partial discharge of a cable, using the apparatus for detecting partial discharge of a cable, includes the following steps:
s1: firstly, fully charging the storage battery 7 through the charging hole 8, then connecting the ultrahigh frequency sensor 16, the acousto-magnetic sensor 17, the pulse discharge detector 5 and the electric telescopic rod 1 with an external control switch through signals, moving the two second curved plates 13 through the torsion spring 12 and the rotating shaft 11 after the connection is finished, sleeving the cable into the two second curved plates 13, and then turning on the ultrahigh frequency sensor 16 and the acousto-magnetic sensor 17;
s2: sliding the first curved plate 10 and the second curved plate 13 on the surface of the cable, rotating the silica gel cylinder 20 on the surface of the cable through the fixing rod 19 in the sliding process of the second curved plate 13, adsorbing and cleaning dust on the surface of the cable by using the silica gel cylinder 20, then turning on the pulse discharge detector 5, detecting the discharge of the cable by using the pulse discharge detector 5, and displaying the detected result on the display screen 3;
s3: when need detect not the cable of co-altitude, can open electric telescopic handle 1, utilize electric telescopic handle 1 to adjust detection mechanism's height, set up electromagnetic shielding film 22 inside second curved plate 13, avoided discharging the in-process that detects, received electromagnetic interference.
When the method and the device for detecting the partial discharge of the cable are used, it needs to be noted that the invention relates to the method and the device for detecting the partial discharge of the cable, which comprise an electric telescopic rod 1; 2. a damping bearing; 3. a display screen; 4. a control button; 5. a pulse discharge detector; 6. a handle; 7. a storage battery; 8. a charging hole; 9. a gooseneck; 10. a first curved plate; 11. a rotating shaft; 12. a torsion spring; 13. a second curved plate; 14. a groove; 15. a fixing plate; 16. an ultrahigh frequency sensor; 17. an acoustic-magnetic sensor; 18. a square groove; 19. fixing the rod; 20. a silica gel cylinder; 21. a cavity; 22. the electromagnetic shielding films and the components are all universal standard parts or components known to those skilled in the art, and the structure and principle of the electromagnetic shielding films and the components are known to those skilled in the art through technical manuals or through routine experiments.
When the cable is used, the storage battery 7 is fully charged through the charging hole 8, then the ultrahigh frequency sensor 16, the acousto-magnetic sensor 17, the pulse discharge detector 5 and the electric telescopic rod 1 are connected with an external control switch through signals, after the connection is completed, the two second curved plates 13 move through the torsion spring 12 and the rotating shaft 11, the cable is sleeved into the two second curved plates 13, then the ultrahigh frequency sensor 16 and the acousto-magnetic sensor 17 are opened, the first curved plate 10 and the second curved plate 13 slide on the surface of the cable, in the sliding process of the second curved plates 13, the silicone cylinder 20 rotates on the surface of the cable through the fixed rod 19, dust on the surface of the cable is adsorbed and cleaned through the silicone cylinder 20, then the pulse discharge detector 5 is opened, the pulse discharge detector 5 is used for detecting the discharge of the cable, and the detected result is displayed on the display screen 3, when need detect not the cable of co-altitude, can open electric telescopic handle 1, utilize electric telescopic handle 1 to adjust detection mechanism's height, set up electromagnetic shielding film 22 inside second curved plate 13, avoided discharging the in-process that detects, received electromagnetic interference.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides a cable partial discharge's detection device, includes electric telescopic handle (1), its characterized in that: the top of the electric telescopic rod (1) is provided with a detection mechanism;
the detection mechanism comprises a damping bearing (2), a display screen (3), a gooseneck (9), a first curved plate (10), a rotating shaft (11), a torsion spring (12), a second curved plate (13), a groove (14), a fixing plate (15), an ultrahigh frequency sensor (16) and an acousto-magnetic sensor (17); electric telescopic handle (1) top is rotated and is connected with damping bearing (2), damping bearing (2) top fixedly connected with display screen (3), the one end of display screen (3) right side fixedly connected with gooseneck (9), the first curved plate (10) of the other end fixedly connected with of gooseneck (9), both ends are all rotated about first curved plate (10) and are connected with pivot (11), torque spring (12) have been cup jointed in pivot (11) outside, and torque spring (12) right side fixedly connected with second curved plate (13), first curved plate (10) right side middle part is seted up fluted (14), recess (14) inside fixedly connected with fixed plate (15), both ends difference fixedly connected with hyperfrequency sensor (16) and sound magnetic sensor (17) about fixed plate (15) right side.
2. A device for detecting partial discharge of a cable according to claim 1, wherein: three square grooves (18) are formed in the inner wall of the second curved plate (13) at equal intervals, fixing rods (19) are fixedly connected inside the three square grooves (18), and silica gel barrels (20) penetrate through the outer sides of the fixing rods (19).
3. A device for detecting partial discharge of a cable according to claim 1, wherein: a cavity (21) is formed in the second curved plate (13), and an electromagnetic shielding film (22) is fixedly connected in the cavity (21).
4. A device for detecting partial discharge of a cable according to claim 1, wherein: the all swing joint in both ends has control button (4) about display screen (3) front side bottom, display screen (3) front side bottom middle part fixedly connected with pulse discharge detector (5).
5. A device for detecting partial discharge of a cable according to claim 1, wherein: electric telescopic handle (1) front side top bolted connection has battery (7), battery (7) front side is opened and is equipped with hole (8) of charging, and charges hole (8) and battery (7) electric connection, handle (6) have all been welded to electric telescopic handle (1) left and right sides bottom.
6. The apparatus for detecting partial discharge of cable according to claim 5, wherein: the storage battery (7) is electrically connected with the display screen (3), the ultrahigh frequency sensor (16), the acousto-magnetic sensor (17), the electric telescopic rod (1) and the pulse discharge detector (5), and the display screen (3) is in signal connection with the ultrahigh frequency sensor (16), the acousto-magnetic sensor (17) and the pulse discharge detector (5).
7. A method for detecting partial discharge of a cable, according to any one of claims 1 to 6, comprising the steps of:
s1: the method comprises the steps that firstly, a storage battery (7) is fully charged through a charging hole (8), then an ultrahigh frequency sensor (16), an acousto-magnetic sensor (17), a pulse discharge detector (5) and an electric telescopic rod (1) are in signal connection with an external control switch, after connection is completed, two second curved plates (13) move through a torsion spring (12) and a rotating shaft (11), a cable is sleeved into the two second curved plates (13), and then the ultrahigh frequency sensor (16) and the acousto-magnetic sensor (17) are turned on;
s2: sliding the first curved plate (10) and the second curved plate (13) on the surface of the cable, wherein in the sliding process of the second curved plate (13), a silica gel cylinder (20) passes through a fixing rod (19) and rotates on the surface of the cable, dust on the surface of the cable is adsorbed and cleaned by the silica gel cylinder (20), then a pulse discharge detector (5) is turned on, the cable is detected by the pulse discharge detector (5), and the detected result is displayed on a display screen (3);
s3: when needs detected the cable of co-altitude not, can open electric telescopic handle (1), utilize electric telescopic handle (1) to adjust detection mechanism's height, set up electromagnetic shielding film (22) inside second bent plate (13), avoided discharging the in-process that detects, received electromagnetic interference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011311659.0A CN112540271A (en) | 2020-11-20 | 2020-11-20 | Method and device for detecting partial discharge of cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011311659.0A CN112540271A (en) | 2020-11-20 | 2020-11-20 | Method and device for detecting partial discharge of cable |
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| CN112540271A true CN112540271A (en) | 2021-03-23 |
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| CN202011311659.0A Pending CN112540271A (en) | 2020-11-20 | 2020-11-20 | Method and device for detecting partial discharge of cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112986773A (en) * | 2021-04-21 | 2021-06-18 | 河南四达电力设备股份有限公司 | Rapid detection and positioning device and positioning method for partial discharge of cable |
| CN117471260A (en) * | 2023-12-26 | 2024-01-30 | 河北大学 | Cable insulation detects and trouble early warning positioner |
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| CN211206747U (en) * | 2019-08-23 | 2020-08-07 | 天津天创正恒能源科技有限公司 | Novel distribution network fault indicator |
| CN211785887U (en) * | 2019-11-30 | 2020-10-27 | 青岛德尔轨道交通设备有限公司 | Portable EMUs high tension cable partial discharge detection device |
| CN111431115A (en) * | 2020-04-24 | 2020-07-17 | 冯晓红 | Protective sleeve for preventing high-altitude cable from breaking and falling |
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| CN112986773A (en) * | 2021-04-21 | 2021-06-18 | 河南四达电力设备股份有限公司 | Rapid detection and positioning device and positioning method for partial discharge of cable |
| CN117471260A (en) * | 2023-12-26 | 2024-01-30 | 河北大学 | Cable insulation detects and trouble early warning positioner |
| CN117471260B (en) * | 2023-12-26 | 2024-03-19 | 河北大学 | Cable insulation detects and trouble early warning positioner |
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