CN102323523B - Built-in coupler for measuring local discharge of GIS (Gas Insulated switchgear) - Google Patents
Built-in coupler for measuring local discharge of GIS (Gas Insulated switchgear) Download PDFInfo
- Publication number
- CN102323523B CN102323523B CN201110147684.4A CN201110147684A CN102323523B CN 102323523 B CN102323523 B CN 102323523B CN 201110147684 A CN201110147684 A CN 201110147684A CN 102323523 B CN102323523 B CN 102323523B
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- China
- Prior art keywords
- insulcrete
- induction electrode
- cover plate
- built
- cylindrical shell
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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
- G01R31/1254—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 gas-insulated power appliances or vacuum gaps
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/16—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using capacitive devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/065—Means for detecting or reacting to mechanical or electrical defects
Abstract
The invention relates to a built-in coupler for measuring local discharge of a GIS (Gas Insulated switchgear), which comprises an inductive electrode and an insulating board, wherein the insulating board is used for being fixed between a cylindrical cover plate and the inductive electrode and is provided with a connecting hole by which the insulating board is fixed with the cylindrical cover plate together; a mounting hole by which the inductive electrode is fixed with the insulating board together is arranged in the center of the inductive electrode; an electric connecting piece is formed in the center of the insulating board; one end of the electric connecting piece is connected with the inductive electrode; and the other end of the electric connecting piece is connected with a cable connector. According to the built-in coupler disclosed by the invention, the insulating board and the inductive electrode are separately fixed with the cylindrical cover plate; the insulating board is provided with the connecting hole by which the insulating board is directly fixed on the cylindrical cover plate; and the inductive electrode is fixed with the insulating board and is electrically connected with the cable connector. According to the built-in coupler, the contact between metal and the inductive electrode when a metal bolt simultaneously penetrates through an insulating pad and the inductive electrode for fixing in the prior art is avoided; the problem that the distance between the metal bolt and the inductive electrode is shorter is solved; and the detection sensitivity of a UHF (Ultra High Frequency) coupler is greatly improved.
Description
Technical field
The present invention relates to a kind of measurement GIS apparatus local discharge based on UHF method sensing and measure the built-in coupling mechanism using.
Background technology
On the online sensing mode detecting of GIS shelf depreciation, by the effective and feasible sensing mode of actual proof, mainly contained ultrasonic sensing and superfrequency (Ultra High Frequency-UHF) sensing.Ultrasonic sensing is for reaching certain sensitivity near the defect of device housings, but for the defect of equipment depths, in signal propagation path, significantly, detection sensitivity is restricted in decay.Superfrequency sensing is to detect super high band (UHF, the 300MHz-3GMHz) electromagnetic wave signal that shelf depreciation produces, and it has good sensing sensitivity, antijamming capability and positional accuracy.For the defect that device interior is small that detects that can be sensitiveer, need built-in coupling mechanism to there is higher sensitivity.，ABB, Siemens, DengGIS manufacturing firm of Toshiba all can provide the GIS equipment with inner UHF coupling mechanism at present.
At present, the built-in coupler structure that the most GIS of measurement shelf depreciations are used is shown in Fig. 1, what fixedly induction electrode was used is two metal set bolts 1, metal bolts symmetry is flush-mounted in the outer edge of induction electrode 2, and be fixed on cylindrical shell cover plate through insulating mat 3, very thin thickness due to insulating mat, cable splice 4 can directly be connected with induction electrode with insulating mat through cylindrical shell cover plate 5, between bolt 1 and induction electrode 2, by insulating part 6, insulate, in this fixed form, metal bolts 1 and induction electrode 2 distances are very near, to cause part UHF signal to be short-circuited to ground by metal bolts, reduce the detection sensitivity of UHF coupling mechanism.
Summary of the invention
The object of this invention is to provide the built-in coupler structure that a kind of GIS of measurement shelf depreciation is used, to solve existing built-in coupler structure metal bolts and induction electrode close together, cause part UHF signal to be short-circuited to ground by metal bolts, reduce the problem of the detection sensitivity of UHF coupling mechanism.
For achieving the above object, the present invention adopts following technical scheme: the built-in coupling mechanism that a kind of GIS of measurement shelf depreciation is used, comprise induction electrode and for being fixed on the insulcrete between cylindrical shell cover plate and induction electrode, described insulcrete is provided with the connecting hole for insulcrete and cylindrical shell cover plate are directly fixed together, and described induction electrode center is provided with induction electrode and the insulcrete mounting hole that is fixed together; The diameter of described insulcrete is greater than the diameter of induction electrode, described connecting hole is arranged in the region that insulcrete exceeds induction electrode, the connecting hole that is arranged on cylindrical shell cover plate and is connected with connecting hole on insulcrete is counter bore structure, is provided with for insulcrete being fixed on to the bolt on cylindrical shell cover plate in connecting hole; The center of described insulcrete is provided with electrical connector, and one end of described electrical connector is connected with induction electrode, and the other end is for being connected with cable splice.
In described mounting hole, be provided with the set bolt that induction electrode and insulcrete are fixed together.
Described insulcrete center has the boss towards induction electrode direction, and described electrical connector is arranged at the center of boss, and one end of electrical connector is connected with set bolt set in induction electrode, and the other end is for being connected with cable splice.
One end of described electrical connector has the mounting hole for pegging graft and coordinate with cable splice, and the other end has the threaded hole for being threaded with induction electrode set bolt.
The described center for the cylindrical shell cover plate that is fixedly connected with insulation cover plate has the hydraucone that prevents that electrical connector is connected with cylindrical shell cover plate.
Described cylindrical shell cover plate lower end arranges the GIS hand hole of a cylinder-like structure, and described GIS hand hole is fixed on cylindrical shell cover plate lower surface by flange.
Described electrical connector is copper post.
Described insulcrete adopts poured with epoxy resin.
This coupling mechanism comprises the cable splice being electrically connected to induction electrode.
Measurement GIS shelf depreciation of the present invention is separated fixing by insulcrete and induction electrode with cylindrical shell cover plate with built-in coupling mechanism, connecting hole is set on insulcrete, insulcrete is directly fixed on to cylindrical shell cover plate, induction electrode and insulcrete are fixed, and be electrically connected to cable splice, avoided in prior art contacting of metal and induction electrode when metal bolts is fixed with induction electrode through insulating mat simultaneously, solve metal bolts and the too near problem of induction electrode distance, greatly improved the detection sensitivity of UHF coupling mechanism.
For making structure easier rationally, the diameter of employing insulcrete is greater than the structure of the diameter of induction electrode, connecting hole is arranged in the region that insulcrete exceeds induction electrode, and connecting hole is counter bore structure, is provided for insulcrete to be fixed on the bolt on cylindrical shell cover plate in connecting hole.
For fear of electrical connector, contact and occur electric conduction phenomena with cylindrical shell cover plate, in the center of the cylindrical shell cover plate being fixedly connected with insulation cover plate, arrange and prevent the hydraucone that electrical connector is connected with cylindrical shell cover plate.
Accompanying drawing explanation
Fig. 1 is common built-in coupler structure figure;
Fig. 2 is the structural representation of the built-in coupling mechanism of the present invention.
Embodiment
Below in conjunction with specific embodiment, the present invention is described further.
Be illustrated in figure 2 the present invention and measure the built-in coupler structure schematic diagram that GIS shelf depreciation is used, as seen from the figure, this coupling mechanism comprises induction electrode 12 and for being fixed on the insulcrete 13 between cylindrical shell cover plate 5 and induction electrode 12, insulcrete 13 is provided with the connecting hole 14 for insulcrete and cylindrical shell cover plate 5 are directly fixed together, induction electrode center is provided with induction electrode 12 and insulcrete 13 mounting hole that is fixed together, in mounting hole, be provided with the set bolt 10 that induction electrode and insulcrete are fixed together, the center of insulcrete is provided with electrical connector 6, one end of electrical connector is connected with induction electrode 12, the other end is for being connected with cable splice 4.
For further optimization, in the present embodiment, the diameter of insulcrete 13 is greater than the diameter of induction electrode 12, connecting hole is arranged in the region that insulcrete exceeds induction electrode, the connecting hole that is arranged on cylindrical shell cover plate and is connected with connecting hole on insulcrete is counter bore structure, is provided with for insulcrete being fixed on to the bolt 11 on cylindrical shell cover plate in connecting hole.
For nearlyer one-step optimization, make structure advantages of simple more, the boss 8 towards induction electrode direction is set at insulcrete center, electrical connector 6 is arranged on the center of boss 8; One end of electrical connector 6 has the mounting hole for pegging graft and coordinate with cable splice 4, and the other end has the threaded hole for being threaded with induction electrode set bolt 10.The electrical connector of the present embodiment adopts copper post, and insulcrete adopts poured with epoxy resin.
For fear of electrical connector, contact and occur electric conduction phenomena with cylindrical shell cover plate, in the center of the cylindrical shell cover plate being fixedly connected with insulation cover plate, arrange and prevent the hydraucone 15 that electrical connector is connected with cylindrical shell cover plate.
For easy for operation, in cylindrical shell cover plate 5 lower ends, a GIS hand hole 7 is set, described GIS hand hole is cylinder-like structure, is welded on flange 9, flange 9 is fixed on the lower surface of cylindrical shell cover plate 5.
In addition, coupling mechanism of the present invention also comprises the cable splice 4 being electrically connected to induction electrode.
Measurement GIS shelf depreciation of the present invention is separated fixing by insulcrete and induction electrode with cylindrical shell cover plate with built-in coupling mechanism, on insulcrete 13, connecting hole is set, insulcrete 13 is directly fixed on to cylindrical shell cover plate 5, induction electrode is fixed by set bolt 10 and insulcrete, and be electrically connected to cable splice 4, such structure has reached goal of the invention, avoided in prior art contacting of metal 1 and induction electrode 2 when metal bolts 1 is fixed with induction electrode 2 through insulating mat 3 simultaneously, the induction electrode UHF signal that shelf depreciation produces that is used for being coupled, insulcrete waters dress and prevents the direct ground connection of induction electrode, metal bolts and the too near problem of induction electrode distance have been solved, greatly improved the detection sensitivity of UHF coupling mechanism, for drawing of the insulation between induction electrode and ground and induced signal, adopt epoxy resin to water and dress up an insulcrete, the copper post as electrical connector 6 that size is suitable of center cast of insulcrete, for drawing of shelf depreciation UHF signal.Due to the mode of insulcrete employing poured with epoxy resin, water package material and adopt epoxy resin and alundum (Al2O3) filler, water assembling structure reliable, sealing property and insulating property are good, after being shaped, it is easy for installation, and insulating property and impermeability are good, meet product request for utilization.
Claims (9)
1. measure the built-in coupling mechanism that GIS shelf depreciation is used for one kind, comprise induction electrode and for being fixed on the insulcrete between cylindrical shell cover plate and induction electrode, it is characterized in that: described insulcrete is provided with the connecting hole for insulcrete and cylindrical shell cover plate are directly fixed together, described induction electrode center is provided with induction electrode and the insulcrete mounting hole that is fixed together; The diameter of described insulcrete is greater than the diameter of induction electrode, described connecting hole is arranged in the region that insulcrete exceeds induction electrode, the connecting hole that is arranged on cylindrical shell cover plate and is connected with connecting hole on insulcrete is counter bore structure, is provided with for insulcrete being fixed on to the bolt on cylindrical shell cover plate in connecting hole; The center of described insulcrete is provided with electrical connector, and one end of described electrical connector is connected with induction electrode, and the other end is for being connected with cable splice.
2. the built-in coupling mechanism that measurement according to claim 1 GIS shelf depreciation is used, is characterized in that: in described mounting hole, be provided with the set bolt that induction electrode and insulcrete are fixed together.
3. the built-in coupling mechanism that measurement GIS shelf depreciation according to claim 2 is used, it is characterized in that: described insulcrete center has the boss towards induction electrode direction, described electrical connector is arranged at the center of boss, one end of electrical connector is connected with set bolt set in induction electrode, and the other end is for being connected with cable splice.
4. the built-in coupling mechanism that measurement GIS shelf depreciation according to claim 3 is used, it is characterized in that: one end of described electrical connector has the mounting hole for pegging graft and coordinate with cable splice, and the other end has the threaded hole for being threaded with induction electrode set bolt.
5. the built-in coupling mechanism that measurement according to claim 1 GIS shelf depreciation is used, is characterized in that: the described center for the cylindrical shell cover plate that is fixedly connected with insulation cover plate has the hydraucone that prevents that electrical connector is connected with cylindrical shell cover plate.
6. the built-in coupling mechanism that measurement GIS shelf depreciation according to claim 1 is used, is characterized in that: described cylindrical shell cover plate lower end arranges the GIS hand hole of a cylinder-like structure, and described GIS hand hole is fixed on cylindrical shell cover plate lower surface by flange.
7. the built-in coupler structure that measurement GIS shelf depreciation according to claim 1 is used, is characterized in that: described electrical connector is copper post.
8. the built-in coupling mechanism that measurement GIS shelf depreciation according to claim 1 is used, is characterized in that: described insulcrete adopts poured with epoxy resin.
9. the built-in coupling mechanism of using according to the measurement GIS shelf depreciation described in claim 1～8 any one, is characterized in that: this coupling mechanism comprises the cable splice being electrically connected to induction electrode.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110147684.4A CN102323523B (en) | 2011-06-02 | 2011-06-02 | Built-in coupler for measuring local discharge of GIS (Gas Insulated switchgear) |
| PCT/CN2011/002029 WO2012162866A1 (en) | 2011-06-02 | 2011-12-19 | Built-in coupler for measuring partial discharge in gis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110147684.4A CN102323523B (en) | 2011-06-02 | 2011-06-02 | Built-in coupler for measuring local discharge of GIS (Gas Insulated switchgear) |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102323523A CN102323523A (en) | 2012-01-18 |
| CN102323523B true CN102323523B (en) | 2014-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110147684.4A Active CN102323523B (en) | 2011-06-02 | 2011-06-02 | Built-in coupler for measuring local discharge of GIS (Gas Insulated switchgear) |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102323523B (en) |
| WO (1) | WO2012162866A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103399179B (en) * | 2013-08-15 | 2015-08-26 | 国家电网公司 | Shading ring ultra-high frequency signal ejector is all pressed in disc insulator |
| CN104062561B (en) * | 2014-06-21 | 2017-06-06 | 宁波理工环境能源科技股份有限公司 | A kind of GIS partial discharge detects built-in capacitance coupling sensor |
| FR3024240B1 (en) * | 2014-07-28 | 2018-02-16 | Alstom Technology Ltd | PARTIAL DISCHARGE DETECTION DEVICE WITH FRACTALLY ARCHITECTURED ANTENNA |
| CN107505552B (en) * | 2017-10-16 | 2019-07-05 | 云南电网有限责任公司电力科学研究院 | Steep-front impacts lower shelf depreciation high-frequency signal extraction element and measuring system |
| CN108919076B (en) * | 2018-08-06 | 2024-01-23 | 广东电网有限责任公司 | Bipolar implantable cable joint partial discharge sensor |
| CN111308287B (en) * | 2020-03-06 | 2021-04-20 | 西南交通大学 | Ultrasonic positioning method for partial discharge fault point of traction transformer |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19507032A1 (en) * | 1995-03-01 | 1996-09-05 | Abb Management Ag | Partial discharge measuring device |
| TWI280383B (en) * | 2004-06-29 | 2007-05-01 | Japan Ae Power Systems Corp | Partial discharge detecting sensor, and detecting device, and gas insulated electric apparatus provided with a partial discharge detecting sensor |
| GB0619690D0 (en) * | 2006-10-05 | 2006-11-15 | Diagnostic Monitoring Systems | Improved coupler |
| JP2009020008A (en) * | 2007-07-12 | 2009-01-29 | Mitsubishi Electric Corp | Insulation monitoring device for gas insulation equipment |
| JP2009288035A (en) * | 2008-05-29 | 2009-12-10 | Japan Ae Power Systems Corp | Partial discharge detector |
| KR101022556B1 (en) * | 2008-11-14 | 2011-03-16 | 한국전력공사 | Ultra-high frequency partial discharge array sensor for high voltage apparatus |
| JP5159672B2 (en) * | 2009-03-04 | 2013-03-06 | 三菱電機株式会社 | Gas insulated switchgear |
| JP5230529B2 (en) * | 2009-05-28 | 2013-07-10 | 三菱電機株式会社 | Gas insulated switchgear |
| CN101782603B (en) * | 2010-03-08 | 2012-06-13 | 华北电力大学 | Flat-plate VFTO measuring sensor |
| CN201654077U (en) * | 2010-05-06 | 2010-11-24 | 山东泰开高压开关有限公司 | Installation structure of probe for GIS partial discharge online monitor diagnosis device |
| CN202119867U (en) * | 2011-06-02 | 2012-01-18 | 平高集团有限公司 | Built-in coupler for measuring GIS partial discharge |
-
2011
- 2011-06-02 CN CN201110147684.4A patent/CN102323523B/en active Active
- 2011-12-19 WO PCT/CN2011/002029 patent/WO2012162866A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN102323523A (en) | 2012-01-18 |
| WO2012162866A1 (en) | 2012-12-06 |
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