CN110261744B - Partial discharge detection device - Google Patents
Partial discharge detection device Download PDFInfo
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- CN110261744B CN110261744B CN201910553086.3A CN201910553086A CN110261744B CN 110261744 B CN110261744 B CN 110261744B CN 201910553086 A CN201910553086 A CN 201910553086A CN 110261744 B CN110261744 B CN 110261744B
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- partial discharge
- detection device
- discharge detection
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- 238000001514 detection method Methods 0.000 title claims abstract description 35
- 230000000712 assembly Effects 0.000 claims abstract description 8
- 238000000429 assembly Methods 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 125000006850 spacer group Chemical group 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 5
- 239000012634 fragment Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses a partial discharge detection device, which is used for detecting a high-voltage cable line and comprises: the support keel, the rib assemblies which are connected with the support keel and arranged on two sides of the support keel, and the panel electrodes which are connected with the rib assemblies and used for coating high-voltage cables; the rib assembly is an elastic assembly, the panel electrode is a conductive panel, and the panel electrode and the rib assembly are provided with openings at the side far away from the keel. The partial discharge detection device fixes the panel electrode through the supporting structure, and the panel electrode can be inserted and installed on the high-voltage cable body, so that the panel electrode can be reliably attached to the high-voltage cable and wraps the high-voltage cable. The partial discharge detection device is convenient to disassemble and assemble, high in working efficiency, firm in installation and capable of guaranteeing detection reliability.
Description
Technical Field
The invention relates to the technical field of electric power, in particular to a partial discharge detection device.
Background
When the high-voltage cable line live high-frequency partial discharge detection adopts an electrode method, thin metal panel electrodes need to be coated on a high-voltage cable body, and because the high-voltage cable is laid in a linear parallel arrangement and a product-shaped arrangement, the space between the high-voltage cables is very small, and the operation of winding the thin metal panel electrodes is difficult to carry out. Not only the human input is big, and work efficiency is low, and leads to the unable assurance of wrapping quality around the package difficulty to detect the reliability not high.
Disclosure of Invention
Based on the above, the invention provides the partial discharge detection device, which overcomes the defects that the high-frequency partial discharge detection of the electrified high-voltage cable line in the prior art has high labor input and low working efficiency, and the wrapping quality cannot be ensured due to the difficult wrapping, so that the detection reliability is not high.
The technical scheme is as follows:
partial discharge detection device for detect high tension cable circuit, include: the support keel, the rib assemblies which are connected with the support keel and arranged on two sides of the support keel, and the panel electrodes which are connected with the rib assemblies and used for coating high-voltage cables; the rib assembly is an elastic assembly, the panel electrode is a conductive panel, and the panel electrode and the rib assembly are provided with openings at the side far away from the keel.
The partial discharge detection device of the technical scheme fixes the panel electrode through the supporting structure, and the panel electrode can be installed on the high-voltage cable body in a plugging mode, so that the panel electrode can be reliably attached to the high-voltage cable and wraps the high-voltage cable. Specifically, this technical scheme's support fossil fragments and rib subassembly are the bearing structure of fixed panel electrode, the rib subassembly is elastic component and distributes in the support fossil fragments both sides, the panel electrode is connected on the rib subassembly, and the two opening lies in same one side, thereby when using this technical scheme's office to put detection device, operating personnel holds the support fossil fragments, aim at the high tension cable with the opening of panel electrode, and push down to high tension cable place direction, because the rib subassembly is elastic component, thereby the rib subassembly of being connected with the panel electrode pushes down the in-process opening expansion, further drive panel electrode opening expansion, until with the good back of high tension cable cladding, the rib subassembly resets, the opening of panel electrode contracts, the tight high tension cable of clamp finally, realize electrode installation operation. Correspondingly, when the partial discharge detection device of the technical scheme needs to be detached, only the supporting keel needs to be held by a hand and pulled out. The partial discharge detection device of the technical scheme is convenient to disassemble and assemble, high in working efficiency, firm in installation and guaranteed in detection reliability.
In one embodiment, the rib assembly comprises a support rib connected with the support keel, and an elastic sleeve member arranged on the support rib in a penetrating way and used for expanding and contracting the support rib.
In one embodiment, the number of the support ribs is four, and two support ribs are used as a group and are symmetrically arranged on two sides of the support keel; two groups of the supporting ribs are arranged at intervals; the panel electrode is connected with both groups of the support ribs.
In one embodiment, the elastic sleeve comprises a screw rod which is arranged on two supporting ribs in a penetrating way and extends out of the outer sides of the supporting ribs, first nuts arranged at two ends of the screw rod, and a return spring arranged between the first nuts and the supporting ribs; the screw rod is arranged on one side, close to the support keel, of the support rib in a penetrating mode.
In one embodiment, a limiting gasket is arranged between the return spring and the first nut.
In one embodiment, the panel electrode comprises a segment-shaped plate with an opening, the outer wall of the segment-shaped plate is connected with the rib assembly, and the segment-shaped plate is a conductive plate.
In one embodiment, the electrode device further comprises an electrode beam arranged at the edge of the opening of the circular segmental plate, and the electrode beam is a conductive beam.
In one embodiment, the outer wall of the opening edge of the segmental plate is provided with a clamping groove, and the electrode beam is arranged in the clamping groove.
In one embodiment, the rib assembly is connected with the support keel through a bolt, a second nut and an elastic washer arranged on the bolt in a penetrating way.
In one embodiment, the outer wall of the supporting keel is provided with anti-skid grains.
Drawings
Fig. 1 is a schematic structural diagram of a partial discharge detection apparatus according to an embodiment of the present invention;
FIG. 2 is an exploded view of FIG. 1;
fig. 3 is a usage state diagram of the partial discharge detection apparatus according to the embodiment of the present invention.
Description of reference numerals:
10. a support keel; 20. a rib assembly; 21. supporting ribs; 22. an elastic sleeve member; 221. a screw; 222. a first nut; 223. a return spring; 224. a limiting gasket; 30. a panel electrode; 31. a card slot; 40. a high voltage cable; 50. an electrode beam; 60. a bolt; 61. a second nut; 62. an elastic pad.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The terms "first" and "second" used herein do not denote any particular order or quantity, but rather are used to distinguish one element from another.
The partial discharge detection apparatus shown in fig. 1-3 is used for detecting the line of a high voltage cable 40, and comprises: the high-voltage cable comprises a support keel 10, rib assemblies 20 connected with the support keel 10 and arranged on two sides of the support keel 10, and panel electrodes 30 connected with the rib assemblies 20 and used for coating high-voltage cables 40; the rib assembly 20 is an elastic assembly, the panel electrode 30 is a conductive panel, and the panel electrode 30 and the rib assembly 20 have openings on the side away from the keel.
The partial discharge detection device of the technical scheme fixes the panel electrode 30 through the supporting structure, and the panel electrode 30 can be installed on the high-voltage cable 40 body in a plugging mode, so that the panel electrode 30 is reliably attached to the high-voltage cable 40 and wraps the high-voltage cable 40. Specifically, the support keel 10 and the rib assembly 20 of the present technical solution are support structures for fixing the panel electrode 30, the rib assembly 20 is an elastic assembly and is distributed on both sides of the support keel 10, the panel electrode 30 is connected to the rib assembly 20, and the openings of the two are located on the same side, so when the partial discharge detection apparatus of the present technical solution is used, an operator holds the support keel 10 with a hand, aligns the opening of the panel electrode 30 with the high-voltage cable 40, and presses down the panel electrode in the direction of the high-voltage cable 40, because the rib assembly 20 is an elastic assembly, the opening of the rib assembly 20 connected to the panel electrode 30 expands in the pressing down process, and further drives the opening of the panel electrode 30 to expand, until the high-voltage cable 40 is coated, the rib assembly 20 resets, the opening of the panel electrode contracts, and finally clamps the high-voltage cable 40, thereby implementing the electrode installation operation. Correspondingly, when the partial discharge detection device in the technical scheme needs to be removed, the supporting keel 10 only needs to be held by a hand and pulled out. The partial discharge detection device of the technical scheme is convenient to disassemble and assemble, high in working efficiency, firm in installation and guaranteed in detection reliability.
The rib assembly 20 of the present embodiment includes a support rib 21 connected to the support keel 10, and an elastic sleeve 22 disposed on the support rib 21 for expanding and contracting the support rib 21.
Specifically, the number of the support ribs 21 is four, the support ribs 21 are arc-shaped plates with elasticity, the two support ribs 21 are taken as a group and symmetrically arranged on two sides of the support keel 10, and concave surfaces of the arc-shaped plates are opposite to each other, so that the support ribs 21 are better attached to the outer wall of the high-voltage cable; two groups of the supporting ribs 21 are arranged at intervals; the panel electrode 30 is connected to both sets of the support ribs 21. The supporting ribs 21 in this embodiment are made of nylon plastic, and in other embodiments, may be made of other elastic members.
The elastic sleeve 22 of the present embodiment includes a screw 221 passing through the support ribs 21 on both sides and extending out of the support ribs 21, a first nut 222 disposed on both ends of the screw 221, and a return spring 223 disposed between the first nut 222 and the support ribs 21; the screw 221 is inserted into one side of the supporting rib 21 close to the supporting keel 10, that is, the elastic sleeve 22 is arranged on one side far away from the opening side of the rib assembly 20. The screw 221 is a screw with threads at both ends, and the first nuts 222 are respectively arranged at both ends of the screw. The support rib 21 is provided with a through hole for the screw rod 221 to penetrate through, and the size of the through hole is smaller than that of the return spring 223, so that the return springs on two sides penetrate through the screw rod 221 and are clamped between the support rib 21 and the first nuts on the corresponding sides.
When using the partial discharge detection device of the present embodiment, an operator holds the support keel 10, aligns the opening of the panel electrode 30 with the high-voltage cable 40, and presses down the high-voltage cable 40, so that the opening of the support rib 21 connected to the panel electrode 30 is expanded during the pressing down process, and the return spring 223 is compressed by the pressure of the expansion of the support rib 21. After the high-voltage cable 40 is coated, the return spring 223 is compressed, so that the return tension exists, the support rib 21 is pressed by the return spring 223, the opening of the panel electrode 30 connected with the support rib is driven to contract, and finally the high-voltage cable 40 is clamped, so that the electrode installation operation is realized. Correspondingly, when the partial discharge detection device in the technical scheme needs to be removed, the supporting keel 10 only needs to be held by a hand and pulled out.
In order to better fix and limit the return spring 223 and ensure the pressing force, the present embodiment further includes a limit washer 224 disposed between the return spring 223 and the first nut 222, and the outer diameter of the limit washer is larger than the outer diameters of the return spring 223 and the first nut 222.
In this embodiment, the panel electrode 30 includes a circular-segment-shaped plate having an opening, the outer wall of the circular-segment-shaped plate is connected to the rib assembly 20, and the two sets of supporting ribs 21 are respectively disposed at two ends of the circular-segment-shaped plate and connected to the two ends of the circular-segment-shaped plate, which is a conductive plate. The opening of the segment-shaped plate is the opening of the panel electrode 30, and is inserted into and pulled out of the high-voltage cable 40 through the opening. The radius of the segmental plate is matched with that of the high-voltage cable 40 and the radian of the support ribs 21, so that the panel electrode 30 can be better attached to the outer wall of the high-voltage cable 40, and the wrapping quality of the panel electrode 30 is improved. The panel electrode 30 is a thin copper plate in this embodiment, and in other embodiments, the panel electrode 30 may be another conductive thin panel.
In order to further improve the clamping quality, the present embodiment further includes an electrode beam 50 disposed at the edge of the opening of the circular segment-shaped plate, and the electrode beam 50 is a conductive beam. Namely, the two side opening edges of the panel electrode 30 are respectively provided with an electrode beam 50, so that when the high-voltage cable 40 is wrapped, the electrode beams 50 play a role in edge locking, the locking force of the opening of the panel electrode 30 is improved, and loosening is avoided. On the other hand, since the thickness of the electrode beam 50 is greater than that of the electrodes of the panel 30, the electrode beam 50 can also be used for connection with external electrodes. The electrode beam 50 according to this embodiment is a copper beam, and in other embodiments, other strip-shaped metals may be used.
The outer wall of the opening edge of the segmental plate in the embodiment is provided with a clamping groove 31, and the electrode beam 50 is arranged in the clamping groove 31 and welded with the clamping groove 31. The clamping groove 31 facilitates the installation of the electrode beam 50.
Because in the process of installation and disassembly, the rib assembly 20 can expand and contract, so that the joint of the rib assembly 20 and the support keel 10 can generate certain deformation, and in order to avoid the loss of pressure generated by the deformation to the support keel 10, the present embodiment connects the rib assembly 20 and the support keel 10 through the bolt 60, the second nut 61 and the elastic gasket 62 arranged on the bolt 60 in a penetrating manner, and due to the buffering effect of the elastic gasket 62, the service life of the product is prolonged, and the joint of the rib assembly 20 and the support keel 10 can slightly expand and contract along with the rib assembly through the allowance of the elastic gasket 62.
The outer wall of the support keel 10 is provided with anti-skidding lines (not shown in the figure), so that slipping of personnel during operation is avoided, and the working efficiency is further improved.
The supporting keel 10 in this embodiment is made of thick strip nylon plastic, and in other embodiments, may be made of other insulating elastic materials.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A partial discharge detection device for detecting a high voltage cable line, comprising: the support keel, the rib assemblies which are connected with the support keel and arranged on two sides of the support keel, and the panel electrodes which are connected with the rib assemblies and used for coating high-voltage cables; the rib assembly is an elastic assembly, and the panel electrode is a conductive panel; the panel electrode and the rib assembly are provided with openings at the side far away from the keel;
the rib component comprises a support rib connected with the support keel and an elastic suite which is arranged on the support rib in a penetrating way and is used for expanding and contracting the support rib;
the elastic sleeve comprises a screw rod, first nuts and a return spring, wherein the screw rod penetrates through the support ribs on two sides and extends out of the outer sides of the support ribs; the screw rod is arranged on one side, close to the support keel, of the support rib in a penetrating mode.
2. The partial discharge detection device according to claim 1, wherein the number of the support ribs is four, and two support ribs are arranged as a group and symmetrically on two sides of the support keel; two groups of the supporting ribs are arranged at intervals; the panel electrode is connected with both groups of the support ribs.
3. The partial discharge detection device according to claim 1, further comprising a limiting spacer disposed between the return spring and the first nut.
4. The partial discharge detection device according to claim 1, wherein the panel electrode comprises a segment-shaped plate having an opening, an outer wall of the segment-shaped plate is connected to the rib assembly, and the segment-shaped plate is a conductive plate.
5. The partial discharge detection device according to claim 4, further comprising an electrode beam disposed at an edge of the opening of the circular segment-shaped plate, wherein the electrode beam is a conductive beam.
6. The partial discharge detection device according to claim 5, wherein a slot is formed on an outer wall of an opening edge of the circular segment-shaped plate, and the electrode beam is disposed in the slot.
7. The partial discharge detection device according to any one of claims 1 to 6, wherein the rib assembly is connected to the support keel through a bolt, a second nut, and an elastic washer disposed on the bolt.
8. The partial discharge detection device according to any one of claims 1 to 6, wherein an outer wall of the support keel is provided with anti-slip lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910553086.3A CN110261744B (en) | 2019-06-25 | 2019-06-25 | Partial discharge detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910553086.3A CN110261744B (en) | 2019-06-25 | 2019-06-25 | Partial discharge detection device |
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| Publication Number | Publication Date |
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| CN110261744A CN110261744A (en) | 2019-09-20 |
| CN110261744B true CN110261744B (en) | 2021-08-31 |
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| CN201910553086.3A Active CN110261744B (en) | 2019-06-25 | 2019-06-25 | Partial discharge detection device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679169A (en) * | 2020-06-28 | 2020-09-18 | 广东电网有限责任公司广州供电局 | Cable partial discharge detection device and method |
| CN111751652A (en) * | 2020-07-18 | 2020-10-09 | 国网辽宁省电力有限公司电力科学研究院 | Detection device and detection method |
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| KR101665458B1 (en) * | 2016-04-19 | 2016-10-24 | (주)원광전기 | Fixing apparatus for external diagnosis partial discharge sensor installed at the outside |
| CN107402343A (en) * | 2017-08-10 | 2017-11-28 | 重庆泰山电缆有限公司 | A kind of capacitive high voltage cable connector shelf depreciation built-in sensors structure |
| CN107907802A (en) * | 2017-11-17 | 2018-04-13 | 国网湖南省电力有限公司 | A kind of powered partial discharge detection sensor of high-tension cable and its application process |
| CN108169520A (en) * | 2017-12-05 | 2018-06-15 | 广东电网有限责任公司东莞供电局 | Novel electrode clamp for measuring dielectric parameter of composite insulator umbrella skirt |
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2019
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201796107U (en) * | 2010-06-13 | 2011-04-13 | 深圳市良源通科技有限公司 | Portable electricity detection device for electric cable and sensor |
| CN202421415U (en) * | 2011-11-28 | 2012-09-05 | 甘肃省电力公司兰州超高压输变电公司 | High frequency current transformer for partial discharge test |
| CN204142781U (en) * | 2014-11-14 | 2015-02-04 | 广州智丰电气科技有限公司 | A kind of removable wound form metal foil film electrode putting detection for office |
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| KR101665458B1 (en) * | 2016-04-19 | 2016-10-24 | (주)원광전기 | Fixing apparatus for external diagnosis partial discharge sensor installed at the outside |
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| CN110261744A (en) | 2019-09-20 |
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