CN104062561B - A kind of GIS partial discharge detects built-in capacitance coupling sensor - Google Patents
A kind of GIS partial discharge detects built-in capacitance coupling sensor Download PDFInfo
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- CN104062561B CN104062561B CN201410280573.4A CN201410280573A CN104062561B CN 104062561 B CN104062561 B CN 104062561B CN 201410280573 A CN201410280573 A CN 201410280573A CN 104062561 B CN104062561 B CN 104062561B
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Abstract
The present invention relates to a kind of GIS partial discharge detection built-in capacitance coupling sensor, including medium, short circuit load, GIS inner wires, sensing electrode, grounded inductor, shell and output cable mouthful, the medium surrounds the sensing electrode, the shell surrounds the medium, the grounded inductor connects the sensing electrode, the sensing electrode downside is provided with ground connection threeway, the short circuit load is run through inside ground connection threeway, the output cable mouth is coated with the side of the short circuit load, the GIS inner wires are located at the electric top of the sensing, distribution capacity C1 is provided between the sensing electrode and the GIS inner wires, distribution capacity C2 is provided between the sensing electrode and the shell, it is grounded after the electric capacity C1 and electric capacity C2 series connection.Beneficial effects of the present invention are：Delicate structure is compact, stable and reliable in work, installs easy, and height equivlent is higher than mill run.
Description
Technical field
The present invention relates to sensor technical field, more particularly to a kind of GIS partial discharge detection built-in capacitance coupling sensing
Device.
Background technology
GIS seen by present（GIS-Geographic Information System）Sensor used by Partial Discharge Detection is all equiangular spiral antenna
Or log-periodic antenna, made by the printed circuit board (PCB) that copper sheet is applied on FR4 materials.This antenna has bandwidth, is simple to manufacture
The characteristics of, but it is relatively low to be provided with height equivlent, and elliptic polarization major and minor axis difference is larger to cause set direction stronger, and integral installation connects
Fitting is more, poor reliability, sensor（Antenna）The obvious weakness such as ground connection difficulty.
The content of the invention
It is an object of the invention to provide one kind, with the above-mentioned deficiency for overcoming currently available technology to be provided with.
The purpose of the present invention is to be achieved through the following technical solutions：
A kind of GIS partial discharge detects built-in capacitance coupling sensor, including medium, short circuit load, GIS inner wires, biography
Sense electrode, shell and output cable mouthful, the medium surround the sensing electrode, and the shell surrounds the medium, institute
State sensing electrode and be connected with grounded inductor, the sensing electrode downside is provided with ground connection threeway, and the short circuit load runs through institute
State inside ground connection threeway, the output cable mouth is coated with the side of the short circuit load, the GIS inner wires are located at the biography
Sense electrode top；Distribution capacity C1 is provided between the sensing electrode and the GIS inner wires, the sensing electrode is outer with described
It is grounded after distribution capacity C2, the electric capacity C1 and electric capacity C2 series connection are provided between shell.
Further, the medium is ceramic dielectric.
Further, sensing electrode symmetrical configuration on two-dimensional surface.
Further, to pass to same symmetry axis paired with the ground connection three for the medium, the sensing electrode, the shell
Claim structure.
Further, the sensing electrode is circular plate type sensing electrode.
Further, high-frequency discharge voltage landing over the ground is on the electric capacity C1 and electric capacity C2.
Further, the sensing electrode takes out the high frequency voltage on the electric capacity C2, through Single port DC earthing threeway
Exported from the output cable mouthful.
Beneficial effects of the present invention are：Delicate structure is compact, stable and reliable in work, installs easy, and height equivlent is higher than general
Logical product.
Brief description of the drawings
The present invention is described in further detail below according to accompanying drawing.
Fig. 1 is the GIS partial discharge detection built-in capacitance coupling sensor structural representation described in the embodiment of the present invention；
Fig. 2 is the equivalent circuit structure schematic diagram described in the embodiment of the present invention.
In figure：
1st, medium；2nd, short circuit load；3rd, GIS inner wires；4th, sensing electrode；5th, grounded inductor；6th, shell；7th, output cable
Mouthful；8th, it is grounded threeway；9th, discharge power supply.
Specific embodiment
As shown in Figure 1-2, a kind of GIS partial discharge detection built-in capacitance coupling sensor of the present invention, including medium
1st, short circuit load 2, GIS inner wires 3, sensing electrode 4, shell 6 and output cable mouth 7, the medium 1 surrounds the sensing electricity
Pole 4, the shell 6 surrounds the medium 1, and the sensing electrode 4 is connected with grounded inductor 5, and the downside of the sensing electrode 4 sets
Ground connection threeway 8 is equipped with, the short circuit load 2 is run through inside ground connection threeway 8, and the output cable mouthful 7 is coated with described
The side of short circuit load 2, the GIS inner wires are located at the top of the sensing electrode 4；The medium 1 is ceramic dielectric；The biography
The symmetrical configuration on two-dimensional surface of sense electrode 4, the medium 1, the sensing electrode 4, the shell 6 with it is described ground connection threeway 8 with
Into symmetrical structure, the sensing electrode 4 is circular plate type sensing electrode to same symmetry axis；Led in the sensing electrode 4 and the GIS
Distribution capacity C1 is provided between body 3, be provided between the sensing electrode 4 and the shell 6 distribution capacity C2, the electric capacity C1 and
It is grounded after electric capacity C2 series connection, on the electric capacity C1 and electric capacity C2, the sensing electrode 4 takes high-frequency discharge voltage landing over the ground
The high frequency voltage gone out on the electric capacity C2, exports through the threeway of Single port DC earthing from the output cable mouthful 7.
When specifically used, under hyperbaric environment, the neighbouring space of sensor forms electric potential gradient, the electricity that different distance is formed
Pressure is also different, and equivalent circuit of the present invention has three ports, when short circuit load is connect in a port, according to scattering parameter and matrix
Electrical length between theory adjustment short circuit load 2 and ground connection threeway 8 center, it is ensured that circuit is straight between two other port
Transmission is connect, so as to realize the DC earthing of whole sensor.It was verified that this earthing method is current most reliable ground connection side
Formula.
Simultaneously as ceramic body has the dielectric constant of stabilization under high pressure, by the height for selecting ceramic body（Suitable one section
Coaxial stub）, it is capable of realizing impedance matching.
Simultaneously as sensing electrode 4 is symmetrical in two-dimensional surface structure, thus the side that electromagnetic wave may polarize need not be judged
To equipment installs directionless selectivity.
Optionally, when GIS device capacity is smaller, in order to cost-effective, ground connection threeway 8 can not be used.
Optionally, according to the GIS of different capabilities, capacitive coupled sensors of the present invention can be made different size
And structure, average equivalent height improves 25% relative to equiangular spiral and logarithm period sensor in whole frequency band.
The present invention is not limited to above-mentioned preferred forms, and anyone can show that other are various under enlightenment of the invention
The product of form, however, make any change in its shape or structure, it is every with skill identical or similar to the present application
Art scheme, is within the scope of the present invention.
Claims (4)
1. a kind of GIS Partial Discharge Detections built-in capacitance coupling sensor, including medium（1）, short circuit load（2）, in GIS
Conductor（3）, sensing electrode（4）, shell（6）With output cable mouthful（7）, it is characterised in that：The medium（1）Surround the biography
Sense electrode（4）, the shell（6）Surround the medium（1）, the sensing electrode（4）It is connected with grounded inductor（5）, it is described
Sensing electrode（4）Downside is provided with ground connection threeway（8）, the short circuit load（2）Run through the ground connection threeway（8）Inside, institute
State output cable mouthful（7）It is coated with the short circuit load（2）Side, the GIS inner wires be located at the sensing electrode（4）
Top；The sensing electrode（4）With the GIS inner wires（3）Between be provided with distribution capacity C1, the sensing electrode（4）With
The shell（6）Between be provided with distribution capacity C2, the electric capacity C1 and electric capacity C2 series connection after be grounded, the sensing electrode
（4）The symmetrical configuration on two-dimensional surface.
2. GIS Partial Discharge Detection built-in capacitance coupling sensors according to claim 1, it is characterised in that：Institute
Give an account of matter（1）It is ceramic dielectric.
3. GIS Partial Discharge Detection built-in capacitance coupling sensors as described in claim 1, it is characterised in that：It is described
Medium（1）, the sensing electrode（4）, the shell（6）With the ground connection threeway（8）With same symmetry axis into symmetrical structure.
4. GIS Partial Discharge Detection built-in capacitance coupling sensors as described in claim 1, it is characterised in that：It is described
Sensing electrode（4）It is circular plate type sensing electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410280573.4A CN104062561B (en) | 2014-06-21 | 2014-06-21 | A kind of GIS partial discharge detects built-in capacitance coupling sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410280573.4A CN104062561B (en) | 2014-06-21 | 2014-06-21 | A kind of GIS partial discharge detects built-in capacitance coupling sensor |
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| Publication Number | Publication Date |
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| CN104062561A CN104062561A (en) | 2014-09-24 |
| CN104062561B true CN104062561B (en) | 2017-06-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505552A (en) * | 2017-10-16 | 2017-12-22 | 云南电网有限责任公司电力科学研究院 | The lower shelf depreciation high-frequency signal extraction element of steep-front impact and measuring system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108445370B (en) * | 2018-06-14 | 2024-05-14 | 国网浙江省电力有限公司检修分公司 | Built-in sensor connecting piece of extra-high voltage GIS |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0699918A1 (en) * | 1994-09-02 | 1996-03-06 | ABB Management AG | A partial discharge sensing device for a gas insulated apparatus |
| DE19507032A1 (en) * | 1995-03-01 | 1996-09-05 | Abb Management Ag | Partial discharge measuring device |
| CN2578839Y (en) * | 2002-09-22 | 2003-10-08 | 西安高压电器研究所 | GIS quick instantaneous voltage measuring sensor |
| JP2009288035A (en) * | 2008-05-29 | 2009-12-10 | Japan Ae Power Systems Corp | Partial discharge detector |
| JP5159672B2 (en) * | 2009-03-04 | 2013-03-06 | 三菱電機株式会社 | Gas insulated switchgear |
| CN101598762A (en) * | 2009-06-24 | 2009-12-09 | 河南平高电气股份有限公司 | A kind of sensor and device for monitoring local discharge of gas insulated metal enclosed switch |
| CN202178471U (en) * | 2011-06-02 | 2012-03-28 | 平高集团有限公司 | Cable connector for built-in coupler and coupler thereof |
| CN102323523B (en) * | 2011-06-02 | 2014-01-29 | 平高集团有限公司 | Built-in coupler for measuring local discharge of GIS (Gas Insulated switchgear) |
| CN102590718B (en) * | 2012-02-22 | 2014-05-14 | 华北电力大学 | System for GIS (Global Information System) partial discharge measurement and VFTO (Very Fast Transient Overvoltage) measurement |
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2014
- 2014-06-21 CN CN201410280573.4A patent/CN104062561B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505552A (en) * | 2017-10-16 | 2017-12-22 | 云南电网有限责任公司电力科学研究院 | The lower shelf depreciation high-frequency signal extraction element of steep-front impact and measuring system |
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| CN104062561A (en) | 2014-09-24 |
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Inventor after: Zhao Yong Inventor after: Xu Jianwen Inventor after: Dong Qiuqin Inventor after: Guo Bao Inventor after: Chen Liang Inventor after: Wei Erbing Inventor after: Wang Lei Inventor before: Sun Zhirui |
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Address after: Free Trade Zone Cao'e River Road 315899 Zhejiang city of Ningbo Province, No. 22 Applicant after: Ningbo environment energy Polytron Technologies Inc Address before: 2, 315800, building 4, building 2, Pioneer Park, Ningbo Free Trade Zone, Zhejiang, China Applicant before: Ningbo Ligong Online Monitoring Technology Co., Ltd. |
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