CN204405791U - For the transient earth voltage sensor of switch cabinet equipment Partial Discharge Detection - Google Patents
For the transient earth voltage sensor of switch cabinet equipment Partial Discharge Detection Download PDFInfo
- Publication number
- CN204405791U CN204405791U CN201520124160.7U CN201520124160U CN204405791U CN 204405791 U CN204405791 U CN 204405791U CN 201520124160 U CN201520124160 U CN 201520124160U CN 204405791 U CN204405791 U CN 204405791U
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- China
- Prior art keywords
- switch cabinet
- voltage sensor
- earth voltage
- cabinet equipment
- transient earth
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- 230000001052 transient effect Effects 0.000 title claims abstract description 64
- 238000001514 detection method Methods 0.000 title claims abstract description 35
- 238000009413 insulation Methods 0.000 claims abstract description 36
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 239000002184 metal Substances 0.000 description 13
- 229910052751 metal Inorganic materials 0.000 description 13
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000007799 cork Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- -1 such as Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
The utility model discloses a kind of transient earth voltage sensor for switch cabinet equipment Partial Discharge Detection, it comprises: insulation crust, its inner hollow; Circuit board, it is inner that it is fixed on described insulation crust by insulating fixing piece; Joint, it is outside that it is fixed on described insulation crust, and be electrically connected by signal wire and described circuit board; Magnet, it is inner that it is located at described insulation crust.The transient earth voltage sensor for switch cabinet equipment Partial Discharge Detection provided of the present utility model, its in testing process without the need to manually doing switch cabinet equipment surface of fitting, easy to use.
Description
Technical field
The utility model relates to high-voltage test sensor, is specially a kind of transient earth voltage sensor of high-tension apparatus Partial Discharge Detection.
Background technology
High-tension switch cabinet is electrical equipment important in urban distribution network, and its operational reliability directly affects the safety and stablization of electric system.Along with the expansion of electrical network scale and the raising of automation of transformation substations level, State Maintenance becomes the developing direction of switch cubicle maintenance work.Shelf depreciation causes apparatus insulated deterioration, and the main cause of insulation fault occurs, therefore put row into switch cubicle office and detect very necessary in time, accurately, and therefore the detection of state of insulation is the important content of status of electric power maintenance.
When shelf depreciation occurs in switch cabinet equipment inside time, can inspire electromagnetic wave, when electromagnetic wave is outwards propagated from the connection gap of switch cubicle, ripple rising edge can produce a transient earth voltage (TEV) on the surface of metal shell.Can realize the detection of the shelf depreciation to switch cabinet equipment inside by detecting this transient earth voltage, the technology of this detection shelf depreciation is called transient earth voltage method.
The key of the inner shelf depreciation of transient earth voltage method detector switch cabinet equipment is transient earth voltage sensor, by the surface that transient earth voltage sensor is attached to switch cubicle metal shell being detected the transient earth voltage signal on metal shell surface.Conventional transient earth voltage sensor is by manually transient earth voltage sensor is attached to switch cabinet equipment outside surface detects transient earth voltage signal, and it is very inconvenient to use, and for the occasion needing long-time monitoring, this way is infeasible.
Utility model content
The purpose of this utility model provides a kind of transient earth voltage sensor for switch cabinet equipment Partial Discharge Detection to overcome above-mentioned being not enough to, its in testing process without the need to artificial effect, switch cabinet equipment surface of just can fitting, easy to use.
Based on above-mentioned purpose, the utility model provides a kind of transient earth voltage sensor for switch cabinet equipment Partial Discharge Detection, and it comprises:
Insulation crust, its inner hollow;
Circuit board, it is inner that it is fixed on described insulation crust by insulating fixing piece;
Joint, it is outside that it is fixed on described insulation crust, and be electrically connected by signal wire and described circuit board;
Magnet, it is inner that it is located at described insulation crust.
The transient earth voltage sensor for switch cabinet equipment Partial Discharge Detection that the utility model provides, based on transient earth voltage input partial discharge of switchgear principle design, the transient earth voltage signal produced by inside switch cabinet partial discharge phenomenon can be extracted, and in transient earth voltage sensor inside, magnet is set, by magnet by transient earth voltage sensor automatic pick to switch cubicle outer metallic surface, make transient earth voltage sensor just can fit to switch cabinet equipment surface without the need to manually acting in testing process, mounting and dismounting are convenient, to the live detection of short time and long on-line monitoring all applicable, improve the ease of use of transient earth voltage sensor.
When transient earth voltage sensor of the present utility model uses, its insulation crust and detected switch cabinet equipment metal surface are fitted, then this transient earth voltage sensor passes through its built-in magnet automatic absorbing on detected switch cabinet equipment metal surface; When stopping using, it is separated with detected switch cabinet equipment metal surface by the gravitation that manually can overcome described magnet.Transient earth voltage signal is exported from joint by circuit board and signal wire.
Further, in the transient earth voltage sensor for switch cabinet equipment Partial Discharge Detection described in the utility model, described insulation crust has at least one installed surface, and described magnet and circuit board are located on the inside surface of installed surface.
Further, in the transient earth voltage sensor for switch cabinet equipment Partial Discharge Detection described in the utility model, described magnet and circuit board are close to described installed surface inside surface and are arranged.Magnet and detected switch cabinet equipment metal surface distance minimization during this setting can make transient earth voltage sensor use, be conducive to promoting the fixing firmness of transient earth voltage sensor.
Further, in the transient earth voltage sensor for switch cabinet equipment Partial Discharge Detection described in the utility model, described magnet is close on the inside surface of described installed surface by tack coat.
Alternatively, in the transient earth voltage sensor for switch cabinet equipment Partial Discharge Detection described in the utility model, described magnet is provided with at least four pieces, and four interior angles of the inside surface of the corresponding installed surface of its difference are arranged.
In such scheme, the magnetic field intensity of magnet need guarantee described transient earth voltage sensor to be adsorbed on detected switch cabinet equipment metal surface comparatively securely, manually can described transient earth voltage sensor be separated with detected switch cabinet equipment metal surface comparatively like a cork again simultaneously.
Further, in the transient earth voltage sensor for switch cabinet equipment Partial Discharge Detection described in the utility model, described circuit board is one side paving copper circuit board, and the one side of its paving copper is close to the inside surface setting of described installed surface.
Further, in the transient earth voltage sensor for switch cabinet equipment Partial Discharge Detection described in the utility model, described circuit board is quadrilateral or is approximately quadrilateral, and described insulating fixing piece is fixed in described insulation crust in four angles place of circuit board inner.
Further, in the transient earth voltage sensor for switch cabinet equipment Partial Discharge Detection described in the utility model, described insulating fixing piece is insulating bolt.
In such scheme, circuit board has through hole, on the installed surface of insulation crust, the position of corresponding through hole has the threaded hole mated with insulating bolt, and described circuit board is fixed on by described through hole and threaded hole on the inside surface of the installed surface of described insulation crust by insulating bolt.
Further, in the transient earth voltage sensor for switch cabinet equipment Partial Discharge Detection described in the utility model, described joint is BNC connector.
Further, in the transient earth voltage sensor for switch cabinet equipment Partial Discharge Detection described in the utility model, described magnet is button-type magnet.
Further, in the transient earth voltage sensor for switch cabinet equipment Partial Discharge Detection described in the utility model, there is in described insulation crust insulation cast structure (being namely filled with insulating material in insulation crust), thus improve the sealing property of transient earth voltage sensor.
Transient earth voltage sensor for switch cabinet equipment Partial Discharge Detection described in the utility model, has the following advantages:
1) magnet that transient earth voltage sensor is built-in makes it by the short time or can be fixed on switch cabinet equipment metal surface for a long time, without the need to other fixed sturcture or manually act on;
2) cover casting by carrying out insulation to transient earth voltage sensor inside, improve the sealing property of transient earth voltage sensor;
3) effectively detecting on the basis of transient earth voltage signal, mounting and dismounting are convenient, economical and practical.
Accompanying drawing explanation
Fig. 1 is the structural representation of transient earth voltage sensor under a kind of embodiment for switch cabinet equipment Partial Discharge Detection described in the utility model.
Fig. 2 is the inside upward view of Fig. 1.
Embodiment
Technical scheme described in the utility model is further illustrated below in conjunction with Figure of description and embodiment.
Fig. 1 shows the structure of transient earth voltage sensor under a kind of embodiment for switch cabinet equipment Partial Discharge Detection described in the utility model, and Fig. 2 is the inside upward view of Fig. 1.
As depicted in figs. 1 and 2, the transient earth voltage sensor of the present embodiment comprises: insulation crust 5, circuit board 1, BNC connector 3, signal wire 2, button-type magnet 4, and wherein circuit board 1, signal wire 2, button-type magnet 4 are all installed in insulation crust 5.Insulation crust 5 is hollow hexahedron, and its surfaces externally and internally with quadrilateral is the installed surface A of plane, also has side B, and six face thicknesses of insulation crust 5 are even; Circuit board 1 is one side paving copper circuit board, shape is quadrilateral, its four interior angle place correspondences have four through hole C, on the inside surface of the installed surface A of insulation crust 5, the position of corresponding through hole C has the threaded hole D mated with insulating bolt 6, circuit board 1 is fixed on the inside surface of installed surface A of insulation crust 5 by through hole C and threaded hole D by insulating bolt 6, and the inside surface that the one side that wherein circuit board 1 spreads copper is close to installed surface A is arranged; BNC connector 3 is screwed on the side B of insulation crust 5, and it is produced by signal wire 2 and circuit board 1 and is electrically connected, for the output of transient earth voltage signal; Four blocks of button-type magnet 4 are fixed near four interior angles of the inside surface of the installed surface A of insulation crust 5 by rapid curing adhesive correspondence; Sensor internal is filled with insulating material, such as, and epoxy resin.
The transient earth voltage sensor of the present embodiment in use, the outside surface of the installed surface A of its insulation crust 5 and detected switch cabinet equipment metal surface are fitted, then this transient earth voltage sensor passes through button-type magnet 4 automatic absorbing on detected switch cabinet equipment metal surface; When stopping using, it is separated with detected switch cabinet equipment metal surface by the gravitation that manually can overcome button-type magnet 4.Transient earth voltage signal is exported from BNC connector 3 by circuit board 1 and signal wire 2.
Above-described embodiment is the utility model preferably embodiment; but embodiment of the present utility model is not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection domain of the present utility model.
Claims (10)
1. for a transient earth voltage sensor for switch cabinet equipment Partial Discharge Detection, it is characterized in that, comprising:
Insulation crust, its inner hollow;
Circuit board, it is inner that it is fixed on described insulation crust by insulating fixing piece;
Joint, it is outside that it is fixed on described insulation crust, and be electrically connected by signal wire and described circuit board;
Magnet, it is inner that it is located at described insulation crust.
2., as claimed in claim 1 for the transient earth voltage sensor of switch cabinet equipment Partial Discharge Detection, it is characterized in that, described insulation crust has at least one installed surface, and described magnet and circuit board are located on the inside surface of installed surface.
3., as claimed in claim 2 for the transient earth voltage sensor of switch cabinet equipment Partial Discharge Detection, it is characterized in that, described magnet is close on the inside surface of described installed surface by tack coat.
4. as claimed in claim 2 for the transient earth voltage sensor of switch cabinet equipment Partial Discharge Detection, it is characterized in that, described magnet is provided with at least four pieces, and four interior angles of the inside surface of the corresponding installed surface of its difference are arranged.
5. as claimed in claim 2 for the transient earth voltage sensor of switch cabinet equipment Partial Discharge Detection, it is characterized in that, described circuit board is one side paving copper circuit board, and the one side of its paving copper is close to the inside surface setting of described installed surface.
6. as claimed in claim 1 or 2 for the transient earth voltage sensor of switch cabinet equipment Partial Discharge Detection, it is characterized in that, described circuit board is quadrilateral or is approximately quadrilateral, and described insulating fixing piece is fixed in described insulation crust in four angles place of circuit board inner.
7., as claimed in claim 1 or 2 for the transient earth voltage sensor of switch cabinet equipment Partial Discharge Detection, it is characterized in that, described insulating fixing piece is insulating bolt.
8., as claimed in claim 1 or 2 for the transient earth voltage sensor of switch cabinet equipment Partial Discharge Detection, it is characterized in that, described joint is BNC connector.
9., as claimed in claim 1 or 2 for the transient earth voltage sensor of switch cabinet equipment Partial Discharge Detection, it is characterized in that, described magnet is button-type magnet.
10., as claimed in claim 1 or 2 for the transient earth voltage sensor of switch cabinet equipment Partial Discharge Detection, it is characterized in that there is in described insulation crust insulation cast structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520124160.7U CN204405791U (en) | 2015-03-03 | 2015-03-03 | For the transient earth voltage sensor of switch cabinet equipment Partial Discharge Detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520124160.7U CN204405791U (en) | 2015-03-03 | 2015-03-03 | For the transient earth voltage sensor of switch cabinet equipment Partial Discharge Detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204405791U true CN204405791U (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520124160.7U Expired - Fee Related CN204405791U (en) | 2015-03-03 | 2015-03-03 | For the transient earth voltage sensor of switch cabinet equipment Partial Discharge Detection |
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| CN (1) | CN204405791U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841739A (en) * | 2017-01-05 | 2017-06-13 | 中国科学院合肥物质科学研究院 | A kind of structure of the optically isolated voltage sensor of high pressure |
| CN109031167A (en) * | 2018-08-16 | 2018-12-18 | 广东电网有限责任公司 | Magnetic field detection component, switchgear and distribution system |
-
2015
- 2015-03-03 CN CN201520124160.7U patent/CN204405791U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841739A (en) * | 2017-01-05 | 2017-06-13 | 中国科学院合肥物质科学研究院 | A kind of structure of the optically isolated voltage sensor of high pressure |
| CN109031167A (en) * | 2018-08-16 | 2018-12-18 | 广东电网有限责任公司 | Magnetic field detection component, switchgear and distribution system |
| CN109031167B (en) * | 2018-08-16 | 2024-03-19 | 广东电网有限责任公司 | Magnetic field detection assembly, switch cabinet and power distribution system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 Termination date: 20200303 |