CN104316853A - Built-in pre-buried ultrahigh-frequency GIS internal partial discharge monitoring sensor - Google Patents
Built-in pre-buried ultrahigh-frequency GIS internal partial discharge monitoring sensor Download PDFInfo
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- CN104316853A CN104316853A CN201410621698.9A CN201410621698A CN104316853A CN 104316853 A CN104316853 A CN 104316853A CN 201410621698 A CN201410621698 A CN 201410621698A CN 104316853 A CN104316853 A CN 104316853A
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Abstract
The invention relates to a device for monitoring GIS internal partial discharge, in particular to a built-in pre-buried ultrahigh-frequency GIS internal partial discharge monitoring sensor. The sensor comprises an insulator, a guiding device and a radio-frequency connector, wherein the insulator is perpendicularly connected to the interior of a grounding shell, the circumferential portion of the insulator is connected with the cylinder wall of the shell, the edge of the insulator extends out of the shell, the guiding device comprises a high-voltage conductor and an antenna, the high-voltage conductor is arranged along the axis of the grounding shell and penetrates through the insulator, the two ends of the high-pressure conductor extend out of the insulator, the antenna is annular, the section of the antenna is in the shape of a circle or a long circle, the antenna is embedded into the insulator, one end of the radio-frequency connector is connected with the antenna, and the other end of the radio-frequency connector extends out of the edge of the antenna. The sensor has the advantages that monitoring position is flexible, monitoring range is wide, monitoring sensitivity is high, the uniform electric field of an original coaxial cylindrical structure is not changed, original insulation margin is increased, and cost is low.
Description
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Technical field
The present invention relates to a kind of device of monitoring the inner shelf depreciation of GIS, specifically superfrequency monitoring sensor is put in the inner office of a kind of built-in built-in type GIS.
Background technology
At present, the inner office of UHF method GIS puts monitoring technology and generally approves, for the built-in electrical insulation state of monitoring the visual plant GIS in electric system in advance provides foundation, effectively prevent the loss of outage that burst insulation fault causes.Along with the development of UHF technology, for improving monitoring sensitivity, proposing and the built-in mode of sensor is put in office.Traditional built-in manner is the insulator arranging a dish type inside the ring flange of housing, conducting rod as guiding device is connected with the radio frequency connector be arranged on ring flange with ring flange through insulator, guiding device is embedded in insulator, be the Chinese patent of 203643559U see publication number, the sensing device of this structure can be good filtering low frequency signal, reduce interference, but it is arranged exists following shortcoming: (1) needs to increase on original housing to arrange window to carry out the installation of sensor, namely add place's hermetically-sealed construction adds the possible gas leakage hidden danger in a place on the one hand in the increase of each window, another side often locates the cost that window and sensor added ten thousand yuan, (2) could install because needs increase window, its magnitude setting in other words density of setting will be restricted, and just arranges 1 often beyond 10 meters, and put for the office occurred in two sensor centre positions, monitoring sensitivity will decline, (3) because sensing device is arranged on the sidepiece of housing, can only receive the signal leaked by installing window, its monitoring range and sensitivity are subject to dropping to restriction, (4) increase of window, makes the uniform electric field of original concentric cylinder structure become uneven at window place, reduces original insulation margin.
Summary of the invention
In order to overcome above-mentioned defect, the present invention provides that a kind of monitoring location is flexible, monitoring range is large, monitoring sensitivity is high, do not change the uniform electric field of original concentric cylinder structure and improve original insulation margin, superfrequency monitoring sensor is put in the office that cost only increases dozens of yuan.
The technical solution used in the present invention is: superfrequency monitoring sensor is put in the inner office of a kind of built-in built-in type GIS, comprise insulator, guiding device and radio frequency connector, insulator is disc, it is characterized in that: described insulator is vertically connected at ground connection enclosure interior and ground connection housing is divided into two rooms, the circumferential location of insulator is connected with the barrel of housing, and its edge stretches out ground connection housing; Guiding device comprises high-pressure conductor and antenna, high-pressure conductor is cylindric, its end edge place equal journey arc transition shape, and high-pressure conductor arranges along the axis of ground connection housing and passes insulator, insulator is all stretched out in its two ends, antenna is annular, the rounded or Long Circle in the cross section of antenna, and antenna is concentric with insulator, antenna embeds interior insulator, and being placed on the outside of high-pressure conductor, described radio frequency connector one end is connected with antenna, and the other end stretches out the edge of insulator.
In the present invention, also comprise two radomes, radome is positioned at the both sides of insulator and is connected with high-pressure conductor.
Insulator in the present invention is vertically set in ground connection housing, antenna in guiding device is arranged to annular and is embedded into interior insulator, simultaneously, columniform high-pressure conductor arranges along ground connection housing axis and passes insulator, antenna in this structure can expand monitoring area, coordinates can obtain all Partial discharge signals by this place with high-pressure conductor; This kind of monitoring of structures is embedded in all GIS major insulation, thus can monitor the shelf depreciation situation of whole ground connection enclosure interior, improves monitoring sensitivity; Antenna is that circular or oblong annulus is arranged in cross section, can effectively even field intensity, avoids wedge angle to produce electric field intensity sudden change; The position of antenna be in insulator earth potential side and with grounding shell metal short circuit, designed shape and position calculate through refined analysis, can improve the electric field intensity at this place, improve GIS original insulation margin; Radome is set in the both sides of insulator and can improves the electric field intensity at this place of insulator and the wedge angle burr shielded on the coupling bolt within the scope of its encirclement, prevent that electric field intensity is uneven causes insulation fault.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
Embodiment
Now the invention will be further described by reference to the accompanying drawings, Fig. 1 is a kind of embodiment of the present invention, comprise insulator 1, guiding device and radio frequency connector 2, insulator 1 is disc, it is inner that guiding device embeds insulator 1, normally when building insulator 1, guiding device is built the inside in insulator 1, both form one.Described insulator 1 is vertically connected at ground connection housing 3 inside and ground connection housing 3 is divided into two rooms, the circumferential location of insulator 1 is connected with the barrel of housing 3, and its edge stretches out ground connection housing 3, normally on body contact body 3, the position of connecting insulator 1 arranges ring flange, can conveniently be connected with insulator 1 like this.Guiding device comprises high-pressure conductor 4 and antenna 5, and high-pressure conductor 4 is cylindric, its end edge place equal journey arc transition shape, and high-pressure conductor 4 arranges along the axis of ground connection housing 3 and passes insulator 1, and insulator 1 is all stretched out at its two ends.Antenna 5 is annular, rounded or the Long Circle in the cross section of antenna 5, antenna 5 is concentric with insulator 1, it is inner that antenna 5 embeds insulator 1, namely antenna 5 is arranged on the inside of insulator 1 and insulator 1 is built integral, antenna 5 is also placed on the outside of high-pressure conductor 4, and described radio frequency connector 2 one end is connected with antenna 5, and the other end stretches out the edge of insulator 1.
In the present embodiment, also comprise two radomes 6, radome 6 is positioned at the both sides of insulator 1 and is connected with high-pressure conductor 4.
Because insulator 1 is vertically set in ground connection housing 3 by the present invention, annular is arranged to by the antenna 5 being embedded into insulator 1 inside, can expand monitoring area, coordinate with high-pressure conductor 4 and can obtain all Partial discharge signals by this place, instead of part is by the Partial discharge signal at this place; This kind of monitoring of structures can be embedded in all GIS major insulation 1, and it is arranged that density is maximum and reaches 0.4 meter of configuration 1, on average every meter of configuration one, thus can monitor the shelf depreciation situation of whole ground connection housing 3 inside, improve monitoring sensitivity; Antenna 5, can effectively even field intensity for being arranged to circular or oblong annulus in cross section, avoids wedge angle to produce electric field intensity sudden change; The position of antenna 5 be in insulator 1 earth potential side and with grounding shell metal short circuit, designed shape and position calculate through refined analysis, can improve the electric field intensity at this place, improve GIS original insulation margin.
The present invention has that monitoring location is flexible, monitoring range is large, and monitoring sensitivity is high, does not change the uniform electric field of original concentric cylinder structure and improves original insulation margin, feature with low cost.
Claims (2)
1. superfrequency monitoring sensor is put in the inner office of built-in built-in type GIS, comprise insulator, guiding device and radio frequency connector, insulator is disc, it is characterized in that: described insulator is vertically connected at ground connection enclosure interior and ground connection housing is divided into two rooms, the circumferential location of insulator is connected with the barrel of housing, and edge stretches out housing; Guiding device comprises high-pressure conductor and antenna, high-pressure conductor is cylindric, and its end edge place is all in arc transition shape, and high-pressure conductor arranges along the axis of ground connection housing and passes insulator, insulator is all stretched out in two ends, antenna is annular, the rounded or Long Circle in the cross section of antenna, and antenna embeds interior insulator, and be placed on the outside of high-pressure conductor, antenna is concentric with insulator, and described radio frequency connector one end is connected with antenna, and the other end stretches out the edge of insulator.
2. superfrequency monitoring sensor is put in the inner office of built-in built-in type GIS according to claim 1, it is characterized in that: also comprise two radomes, radome is positioned at the both sides of insulator and is connected with high-pressure conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410621698.9A CN104316853A (en) | 2014-11-07 | 2014-11-07 | Built-in pre-buried ultrahigh-frequency GIS internal partial discharge monitoring sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410621698.9A CN104316853A (en) | 2014-11-07 | 2014-11-07 | Built-in pre-buried ultrahigh-frequency GIS internal partial discharge monitoring sensor |
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| Publication Number | Publication Date |
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| CN104316853A true CN104316853A (en) | 2015-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410621698.9A Pending CN104316853A (en) | 2014-11-07 | 2014-11-07 | Built-in pre-buried ultrahigh-frequency GIS internal partial discharge monitoring sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676082A (en) * | 2016-01-19 | 2016-06-15 | 华北电力大学（保定） | Internal defect detection system and method for basin-type insulator of gas insulated switchgear (GIS) |
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| JPH0378429A (en) * | 1989-08-17 | 1991-04-03 | Nissin Electric Co Ltd | Antenna device for monitoring insulation |
| JPH063404A (en) * | 1991-09-25 | 1994-01-11 | Sumitomo Electric Ind Ltd | Partial discharge measuring instrument for transmission cable |
| JPH09200917A (en) * | 1996-01-16 | 1997-07-31 | Takaoka Electric Mfg Co Ltd | Insulating spacer of gas insulated switchgear for three phases |
| US6255808B1 (en) * | 1997-07-31 | 2001-07-03 | Siemens Aktiengesellschaft | Device for measuring partial discharge in gas-insulated high voltage facilities, the device having a HF sensor and UHF sensor |
| CN2441145Y (en) * | 2000-08-18 | 2001-08-01 | 广东省电力工业局试验研究所 | Antenna for GIS fault detector |
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| CN102955106A (en) * | 2012-05-21 | 2013-03-06 | 厦门华电开关有限公司 | Partial discharging detection device of gas insulation metal sealing switching equipment and insulator |
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2014
- 2014-11-07 CN CN201410621698.9A patent/CN104316853A/en active Pending
Patent Citations (9)
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| JPH0378429A (en) * | 1989-08-17 | 1991-04-03 | Nissin Electric Co Ltd | Antenna device for monitoring insulation |
| JPH063404A (en) * | 1991-09-25 | 1994-01-11 | Sumitomo Electric Ind Ltd | Partial discharge measuring instrument for transmission cable |
| JPH09200917A (en) * | 1996-01-16 | 1997-07-31 | Takaoka Electric Mfg Co Ltd | Insulating spacer of gas insulated switchgear for three phases |
| US6255808B1 (en) * | 1997-07-31 | 2001-07-03 | Siemens Aktiengesellschaft | Device for measuring partial discharge in gas-insulated high voltage facilities, the device having a HF sensor and UHF sensor |
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| CN102955106A (en) * | 2012-05-21 | 2013-03-06 | 厦门华电开关有限公司 | Partial discharging detection device of gas insulation metal sealing switching equipment and insulator |
| CN203643559U (en) * | 2013-12-24 | 2014-06-11 | 山东泰开高压开关有限公司 | Sensing device for detecting partial discharge inside GIS through UHF method |
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| 孙才新 等: "检测GIS局部放电的内置传感器的模型及性能研究", 《中国电机工程学报》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676082A (en) * | 2016-01-19 | 2016-06-15 | 华北电力大学（保定） | Internal defect detection system and method for basin-type insulator of gas insulated switchgear (GIS) |
| CN105676082B (en) * | 2016-01-19 | 2018-06-05 | 华北电力大学（保定） | Gas insulated combined electrical equipment disc insulator Inner Defect Testing system and method |
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