CN104267323A - Main partial discharge detection device based on built-in UHF sensor - Google Patents
Main partial discharge detection device based on built-in UHF sensor Download PDFInfo
- Publication number
- CN104267323A CN104267323A CN201410540958.XA CN201410540958A CN104267323A CN 104267323 A CN104267323 A CN 104267323A CN 201410540958 A CN201410540958 A CN 201410540958A CN 104267323 A CN104267323 A CN 104267323A
- Authority
- CN
- China
- Prior art keywords
- uhf sensor
- type uhf
- built
- metal layer
- circular metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses a main partial discharge detection device based on a built-in UHF sensor. The main partial discharge detection device based on the built-in UHF sensor comprises the UHF sensor arranged in a transformer oil tank, the UHF sensor is fixed in the transformer oil tank through a flange plate, an arc metal layer protruding towards one side of the flange plate is arranged between the UHF sensor and the flange plate, the outer side of the arc metal layer is fixedly connected with the flange plate through an insulating rubber rod, and the top of the inner side of the arc metal layer is fixedly connected with the UHF sensor through a conducting metal rod; a circular metal disc is arranged on the side, back on to the flange plate, of the UHF sensor, the inner side of the circular metal disc is connected with the UHF sensor through an insulating rubber rod, a plurality of pairs of spray points are arranged on the outer side of the circular metal disc, each pair of spray points include two spray points, each spray point is provided with an auxiliary spray point body, and coaxial feeder lines are connected with the circular metal disc and the UHF sensor at the same time. The main partial discharge detection device based on the built-in UHF sensor can overcome the defects in the prior art, and effectively reduce disturbance on the built-in UHF sensor in the use process.
Description
Technical field
The present invention relates to a kind of checkout equipment of transformer operational process, pick-up unit is put in especially a kind of main transformer office based on built-in type UHF sensor.
Background technology
Steady, the normal operation of transformer is the key problem of Operation of Electric Systems.Insulation fault is the modal problem of transformer, and inside transformer shelf depreciation is the main reason causing insulation fault.Chinese invention patent CN 2736782Y discloses a kind of partial discharge detector of transformer, improves mounting means, effectively can extract signal in broadband.But this built-in type UHF sensor in use can be subject to the electromagnetic interference (EMI) of the external world and inside transformer, and accuracy of measurement cannot be guaranteed.
summary of the invention
The technical problem to be solved in the present invention is to provide a kind of main transformer office based on built-in type UHF sensor and puts pick-up unit, can solve the deficiencies in the prior art, effectively reduce the interference that built-in type UHF sensor is in use subject to.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows.
Pick-up unit is put in a kind of main transformer office based on built-in type UHF sensor, comprise the type UHF sensor be arranged in oil tank of transformer, type UHF sensor is fixed in oil tank of transformer by ring flange, be provided with towards the curved metal layer of ring flange side projection between described type UHF sensor and ring flange, the outside of curved metal layer is fixed with ring flange by electro-insulating rubber rod, and the top inside curved metal layer is fixed with type UHF sensor by conducting metal rod; The side of type UHF sensor ring flange is dorsad provided with circular metal dish, the inner side of circular metal dish is connected with type UHF sensor by electro-insulating rubber rod, the arranged outside of circular metal dish has some to spray point, often pair comprises two spray points, the spacing at two spray point tops is 0.2 ~ 0.5mm, spray point is also provided with secondary needle body, and the spacing at two secondary needle body tops is 1 ~ 1.5mm, and coaxial supply line is connected with type UHF sensor with circular metal dish simultaneously.
As preferably, the arranged outside of described type UHF sensor, curved metal layer and circular metal dish has metal cage, and metal cage is suspended on the inwall of oil tank of transformer by tinsel.
As preferably, described curved metal layer and circular metal dish are provided with several through holes.
The beneficial effect adopting technique scheme to bring is: the present invention uses curved metal layer and type UHF sensor to form equipotentiality body, reduce type UHF sensor on the one hand and import electromagnetic absorption to external world into, the electromagnetic wave that inside transformer electric discharge produces can also be reflected in addition, improve type UHF sensor to the sensitivity of inner discharge examination.Spray point can attract the free charge of assembling inside transformer, and taper off to a point on top electric discharge, and type UHF sensor effectively can be detected the low-energy free charge of inside transformer, and secondary needle body can balance voltage differences different between two spray points.Circular metal dish forms capacitance body in inside transformer and type UHF sensor, can absorb the spike electromagnetic wave of inside transformer, reduces interference.Metal cage can carry out external electromagnetic shielding to whole detection part, improves detection accuracy.After arranging curved metal layer and circular metal dish, the oil plant flowing in oil tank of transformer is hindered, and by arranging through hole, can improve the mobility of oil plant.
Accompanying drawing explanation
Fig. 1 is the structural drawing of the present invention's embodiment.
Fig. 2 is the structural drawing of rear coaxial supply line and ring flange installation site in the present invention's embodiment.
Embodiment
See Fig. 1,2, parts title is as follows: 1, oil tank of transformer; 2, type UHF sensor; 3, ring flange; 4, curved metal layer; 5, electro-insulating rubber rod; 6, conducting metal rod; 7, circular metal dish; 8, spray point; 9, secondary needle body; 10, coaxial supply line; 11, metal cage; 12, through hole; 13, rubber seal plug; 14, spring body; 15, metallic shield ring.
With reference to Fig. 1-2, the present invention's embodiment comprises the type UHF sensor 2 be arranged in oil tank of transformer 1, type UHF sensor 2 is fixed in oil tank of transformer 1 by ring flange 3, be provided with between described type UHF sensor 2 and ring flange 3 towards the curved metal layer 4 of ring flange 3 side projection, the outside of curved metal layer 4 is fixed by electro-insulating rubber rod 5 and ring flange 3, and the top inside curved metal layer 4 is fixed by conducting metal rod 6 and type UHF sensor 2; The side of type UHF sensor 2 ring flange 3 is dorsad provided with circular metal dish 7, the inner side of circular metal dish 7 is connected with type UHF sensor 2 by electro-insulating rubber rod 5, the arranged outside of circular metal dish 7 has some to spray point 8, often pair comprises two spray points 8, the spacing at two spray point 8 tops is 0.27mm, spacing spray point 8 being also provided with secondary needle body 9 top of secondary needle body 9, two is 1.35mm, and coaxial supply line 10 is connected with type UHF sensor 2 with circular metal dish 7 simultaneously.The present embodiment uses curved metal layer 4 and type UHF sensor 2 to form equipotentiality body, reduce type UHF sensor 2 on the one hand and import electromagnetic absorption to external world into, the electromagnetic wave that inside transformer electric discharge produces can also be reflected in addition, improve type UHF sensor 2 to the sensitivity of inner discharge examination.Spray point 8 can attract the free charge of assembling inside transformer, taper off to a point on top electric discharge, type UHF sensor 2 effectively can be detected the low-energy free charge of inside transformer, and secondary needle body 9 can balance voltage differences different between two spray points 8.Circular metal dish 7 forms capacitance body in inside transformer and type UHF sensor 2, can absorb the spike electromagnetic wave of inside transformer, reduces interference.The arranged outside of type UHF sensor 2, curved metal layer 4 and circular metal dish 7 has metal cage 11, metal cage 11 is suspended on the inwall of oil tank of transformer 1 by tinsel, metal cage 11 can carry out external electromagnetic shielding to whole detection part, improves detection accuracy.After arranging curved metal layer 4 and circular metal dish 7, the oil plant flowing in oil tank of transformer 1 is hindered, and by arranging through hole 12, can improve the mobility of oil plant.
In addition, pass on the position of ring flange 3 at coaxial supply line 10, the both sides, front and back of ring flange 3 are provided with rubber seal plug 13, for sealing the space between coaxial supply line 10 and ring flange 3.Rubber seal plug 13 surface in outside is provided with spring body 14, and rubber seal plug 13 surface of inner side is provided with metallic shield ring 15.Spring body 14 can realize coaxial supply line and ring flange and keep certain elasticity to pull capacity, and metallic shield ring 15 can reduce external electromagnetic ripple and enter oil tank of transformer 1 by ring flange 3.
The present invention be the technical scheme of the patent documentation quoted in the introduction basis on improve, the extraneous circuit of type UHF sensor has carried out disclosing of centimetre in the patent literature, has belonged to disclosed prior art category, has been not described in detail in this.
The standardized element used in the present invention all can be commercially, shaped piece all can carry out customized according to instructions with the record of accompanying drawing, the concrete connected mode of each part all adopts the conventional means such as bolt, rivet, welding, stickup ripe in prior art, is not described in detail in this.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (5)
1. put pick-up unit based on the main transformer office of built-in type UHF sensor for one kind, comprise the type UHF sensor (2) be arranged in oil tank of transformer (1), type UHF sensor (2) is fixed in oil tank of transformer (1) by ring flange (3), it is characterized in that: be provided with towards the curved metal layer (4) of ring flange (3) side projection between described type UHF sensor (2) and ring flange (3), the outside of curved metal layer (4) is fixed by electro-insulating rubber rod (5) and ring flange (3), the top of curved metal layer (4) inner side is fixed by conducting metal rod (6) and type UHF sensor (2), the side of type UHF sensor (2) ring flange (3) is dorsad provided with circular metal dish (7), the inner side of circular metal dish (7) is connected with type UHF sensor (2) by electro-insulating rubber rod (5), the arranged outside of circular metal dish (7) has some to spray point (8), often pair comprises two spray points (8), spray point (8) is also provided with secondary needle body (9), coaxial supply line (10) is connected with type UHF sensor (2) with circular metal dish (7) simultaneously.
2. pick-up unit is put in the main transformer office based on built-in type UHF sensor according to claim 1, it is characterized in that: the arranged outside of described type UHF sensor (2), curved metal layer (4) and circular metal dish (7) has metal cage (11), and metal cage (11) is suspended on the inwall of oil tank of transformer (1) by tinsel.
3. pick-up unit is put in the main transformer office based on built-in type UHF sensor according to claim 1, it is characterized in that: described curved metal layer (4) and circular metal dish (7) are provided with several through holes (12).
4. pick-up unit is put in the main transformer office based on built-in type UHF sensor according to claim 1, it is characterized in that: the spacing at two spray point (8) tops is 0.2 ~ 0.5mm.
5. pick-up unit is put in the main transformer office based on built-in type UHF sensor according to claim 1, it is characterized in that: the spacing at two secondary needle body (9) tops is 1 ~ 1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410540958.XA CN104267323B (en) | 2014-10-14 | 2014-10-14 | Main partial discharge detection device based on built-in UHF sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410540958.XA CN104267323B (en) | 2014-10-14 | 2014-10-14 | Main partial discharge detection device based on built-in UHF sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104267323A true CN104267323A (en) | 2015-01-07 |
| CN104267323B CN104267323B (en) | 2017-02-22 |
Family
ID=52158863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410540958.XA Active CN104267323B (en) | 2014-10-14 | 2014-10-14 | Main partial discharge detection device based on built-in UHF sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104267323B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202093119U (en) * | 2010-12-31 | 2011-12-28 | 保定天威集团有限公司 | Built-in partial discharge monitoring sensor for transformer |
| CN202693737U (en) * | 2012-05-21 | 2013-01-23 | 北京华电天能电力技术有限公司 | Transformer partial discharge UHF (ultra high frequency) sensor |
| KR20130011176A (en) * | 2011-07-20 | 2013-01-30 | 엘에스산전 주식회사 | Uhf patial discharge sensor for oil transformer |
| CN203376466U (en) * | 2013-07-15 | 2014-01-01 | 国家电网公司 | A detection and verification system of a power transformer partial discharge ultrasonic sensor |
| CN203551763U (en) * | 2013-11-19 | 2014-04-16 | 广东电网公司电力科学研究院 | Transformer partial discharge UHF detecting instrument performance calibration device |
| CN204101683U (en) * | 2014-10-14 | 2015-01-14 | 国家电网公司 | Pick-up unit is put in a kind of main transformer office based on built-in type UHF sensor |
-
2014
- 2014-10-14 CN CN201410540958.XA patent/CN104267323B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202093119U (en) * | 2010-12-31 | 2011-12-28 | 保定天威集团有限公司 | Built-in partial discharge monitoring sensor for transformer |
| KR20130011176A (en) * | 2011-07-20 | 2013-01-30 | 엘에스산전 주식회사 | Uhf patial discharge sensor for oil transformer |
| CN202693737U (en) * | 2012-05-21 | 2013-01-23 | 北京华电天能电力技术有限公司 | Transformer partial discharge UHF (ultra high frequency) sensor |
| CN203376466U (en) * | 2013-07-15 | 2014-01-01 | 国家电网公司 | A detection and verification system of a power transformer partial discharge ultrasonic sensor |
| CN203551763U (en) * | 2013-11-19 | 2014-04-16 | 广东电网公司电力科学研究院 | Transformer partial discharge UHF detecting instrument performance calibration device |
| CN204101683U (en) * | 2014-10-14 | 2015-01-14 | 国家电网公司 | Pick-up unit is put in a kind of main transformer office based on built-in type UHF sensor |
Non-Patent Citations (1)
| Title |
|---|
| 唐炬等: "用于GIS局放放电检测的内置传感器超高频耦合特性研究", 《电工技术学报》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104267323B (en) | 2017-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103913679B (en) | High-tension switch cabinet partial discharge monitoring system | |
| CN202583399U (en) | Combined device formed by ultrahigh frequency sensor and shielding soft base of sensor | |
| CN105547416B (en) | A kind of magnetostrictive liquid level sensor | |
| CN202133747U (en) | Portable partial discharge detector | |
| CN103558520A (en) | Partial-discharge electrification detecting system and locating method for gas-insulation combined electrical appliance | |
| CN106526409B (en) | A kind of deformation of transformer winding live testing system and its test method | |
| CN104569764A (en) | Live detection system for creeping discharge of composite apparatus and method thereof | |
| TW201229529A (en) | Zinc oxide lightning arrester detection apparatus | |
| BR112018009434A2 (en) | resistivity imaging using capacitive and inductive combination sensors | |
| CN204101683U (en) | Pick-up unit is put in a kind of main transformer office based on built-in type UHF sensor | |
| CN205333783U (en) | Partial discharge detection device | |
| CN205352512U (en) | Magnetostrictive liquid level sensor | |
| CN104267323A (en) | Main partial discharge detection device based on built-in UHF sensor | |
| CN205210248U (en) | Three -dimensional alignment sensor is put in generator, motor office | |
| CN202486277U (en) | Partial discharging detecting device | |
| CN201773121U (en) | Novel full-sealing high voltage microampere meter shell | |
| CN201237622Y (en) | On-line monitoring device for three-phase arrester in cabinet | |
| CN203838288U (en) | Lightning stroke shielding failure and back flashover identification apparatus for AC/DC power transmission line | |
| CN208335173U (en) | Capacitive touch screen equipment immunity experiment touch screen key detection device | |
| CN204256113U (en) | Partial discharge pulse's detection system | |
| CN103364697A (en) | Ultraviolet real-time monitoring device of switch cabinet | |
| CN108509307A (en) | Capacitive touch screens equipment radio frequency electromagnetic field radiation immunity experiment touch screen key detection device | |
| CN203773009U (en) | High-voltage switch cabinet partial discharge on-line monitoring system | |
| CN202693736U (en) | Online partial discharge detecting sensor of GIS (gas insulated substation) | |
| CN205384347U (en) | Insulating status monitoring device suitable for intelligence high tension switchgear |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Chao Inventor after: Lai Changqi Inventor after: Jia Shouhui Inventor after: Zhou Yongfa Inventor after: Sun Dong Inventor after: Fang Xianglong Inventor after: Zhao Cheng Inventor after: Zhang Jinbo Inventor after: Zhou Yifan Inventor before: Dong Wenfeng Inventor before: Zhang Jiaming Inventor before: Gao Jinyu Inventor before: Zhang Xuguang Inventor before: Zhu Hongtao |
|
| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |