CN104330594A - Partial discharge test shielding cover for large transformer - Google Patents
Partial discharge test shielding cover for large transformer Download PDFInfo
- Publication number
- CN104330594A CN104330594A CN201410615212.0A CN201410615212A CN104330594A CN 104330594 A CN104330594 A CN 104330594A CN 201410615212 A CN201410615212 A CN 201410615212A CN 104330594 A CN104330594 A CN 104330594A
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- China
- Prior art keywords
- shielding cover
- transformer
- radome
- partial discharge
- discharge test
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- 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.)
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Abstract
The invention belongs to the field of power applications and particularly relates to a partial discharge test shielding cover for a large transformer. The shielding cover comprises a U-shaped shielding cover body, a clamp and a transformer bushing. The U-shaped shielding cover body is arranged on the upper portion of the transformer bushing, and the top end welding point in the shielding cover is connected with the clamp through a bare copper wire. A hand hole is formed in the side wall. During the application, the shielding cover is mounted on the bushing at the A, B and C phases of the transformer by a tester. By means of the shielding cover, electric field distribution at the bushing wiring position is uniform due to a plurality of field interference sources, the discharge amount generated by air breakdown is prevented from being mixed into the measurement value, and a function of electric field uniform distribution is provided.
Description
Technical field
The invention belongs to electric power application, particularly relate to high-power transformer partial discharge test radome.
Background technology
In recent years, electric system is configured with much large-scale transformer station.Transformer is as ingredient important in electric system, and its operation conditions how, the security of operation of the whole electric system of direct relation, once have an accident, can cause heavy economic losses, brings interruption also can to social electricity consumption.Partial discharge test is the main experimental project of transformer performance, and it mainly checks inside transformer, due to the non-through electric discharge phenomena that weak place of insulating occurs.It can not make the insulativity of electrical equipment be punctured immediately, but because of its produce physics and chemical reaction, insulation defect can be made constantly to expand, and then cause insulation breakdown.According to GB 50150-2006 " Erection works of electrical installations Standard for handover test of electric equipment " 220 kV and above transformer do at the scene commissioning test and all, part more emat coil time, must partial discharge test be done.At present, most high-power transformer partial discharge test lacks radome, and what have individually exists unreasonable structure, and shield effectiveness is poor, is difficult to the demand meeting high-power transformer partial discharge test, urgently improves.
Summary of the invention
The present invention is directed to problems of the prior art, provide a kind of high-power transformer partial discharge test radome, fundamental purpose be make conduit connection place Electric Field Distribution evenly, prevent due to puncture air produce discharge capacity be mixed in measured value, play electric fields uniform distribution effect.
Technical scheme of the present invention is as follows: a kind of high-power transformer partial discharge test radome, and comprise radome, clip and bushing shell for transformer, bushing shell for transformer top arranges U-shaped radome, and in radome, top pad bare copper wire connects clip; Sidewall arranges hand hole.
Technical characterstic of the present invention is as follows: easy to use and flexible; Transformer is all very high also will be installed on bushing shell for transformer radome, and be convenient to carrying owing to have employed aluminum very light in weight, the design experiment personnel that have employed two hand holes are easy to install and wiring; Test effect is good, because radome have employed copper short-circuit line and clip, sleeve pipe is connected tightr with radome; Preventing transformer high-voltage to puncture air produces dangerous, is exactly arc light; Completely cut off electromagnetic wave simultaneously, ensure that safety; Prevent and discharged and prevent arc discharge in the place of mistake, strengthen Secure isolation; Main object makes the Electric Field Distribution at conduit connection place more even, prevents the discharge capacity produced owing to puncturing air to be mixed in measured value, play uniform electric field distribution effect.
Accompanying drawing explanation
Partial discharge of transformer private mask cover structure schematic diagram 1; Partial discharge of transformer private mask cover practical application Fig. 2.Wherein radome 1, clip 2, bare copper wire 3, pad 4, hand hole 5, bushing shell for transformer 6.
Embodiment
Embodiment: the present invention mainly develops high-power transformer partial discharge test radome, the high 60cm of radome 1, lower port diameter 30cm that full aluminum makes, two hand hole 5 diameter 10cm; Top 12mm in radome 1
2bare copper wire 3 pad 4, the other end connection clamp 2 of bare copper wire 3.It is arranged on it on the sleeve pipe of transformer A, B, C three-phase by testing crew respectively when applying.Because spot jamming resource is many, adopt this device make conduit connection place Electric Field Distribution evenly, prevent the discharge capacity produced owing to puncturing air to be mixed in measured value, play the effect of electric fields uniform distribution.
This technology is applied to the Lanzhou-Xinjiang transformer station 220kV of state net new clothes 220kV mono-, No. two Existing during Partial Discharge Test for Transformers; The friendly transformer station 220kV of 220kV mono-, No. two Existing during Partial Discharge Test for Transformers; 220kV Zhong Zhai transformer station 220kV No. bis-transformer overhaul partial discharge tests; 220kV peace transformer station 220kV No. five transformer overhaul partial discharge tests, all achieve good results, improve test mass.
Claims (2)
1. a high-power transformer partial discharge test radome, comprises radome, clip and bushing shell for transformer, it is characterized in that bushing shell for transformer top arranges U-shaped radome, and in radome, top pad bare copper wire connects clip; Sidewall arranges hand hole.
2. a kind of high-power transformer partial discharge test radome according to claim 1, is characterized in that the radome made by full aluminum, high 60cm, lower port diameter 30cm, two hand hole diameter 10cm; Described bare copper wire size 12mm
2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410615212.0A CN104330594A (en) | 2014-11-05 | 2014-11-05 | Partial discharge test shielding cover for large transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410615212.0A CN104330594A (en) | 2014-11-05 | 2014-11-05 | Partial discharge test shielding cover for large transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104330594A true CN104330594A (en) | 2015-02-04 |
Family
ID=52405357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410615212.0A Pending CN104330594A (en) | 2014-11-05 | 2014-11-05 | Partial discharge test shielding cover for large transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104330594A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113130191A (en) * | 2019-12-31 | 2021-07-16 | 济南西门子变压器有限公司 | Breakdown prevention device and reactor thereof |
| CN115763017A (en) * | 2022-11-28 | 2023-03-07 | 山东迅驰电气有限公司 | Novel shielding case for partial discharge test of transformer |
| KR20230120385A (en) | 2022-02-09 | 2023-08-17 | 에이치디현대일렉트릭 주식회사 | Shield apparatus for bushing of transformer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2724378Y (en) * | 2004-09-10 | 2005-09-07 | 北京益弘泰科技发展有限责任公司 | Electromagnetic interference shield cover |
| CN2725905Y (en) * | 2004-07-06 | 2005-09-14 | 特变电工沈阳变压器集团有限公司 | Tester for transformer sleeve |
| CN201360392Y (en) * | 2009-01-21 | 2009-12-09 | 中兴通讯股份有限公司 | Electromagnetic shielding device |
| CN202695093U (en) * | 2012-05-18 | 2013-01-23 | 东莞市大忠电子有限公司 | Transformer with a shielding cover |
| CN202794256U (en) * | 2012-08-23 | 2013-03-13 | 云南电力试验研究院（集团）有限公司电力研究院 | Shielding cover for transformer test |
| CN103926434A (en) * | 2014-03-28 | 2014-07-16 | 国家电网公司 | Shielding cover for lightning arrester test |
| CN204116402U (en) * | 2014-11-05 | 2015-01-21 | 国网辽宁省电力有限公司抚顺供电公司 | High-power transformer partial discharge test radome |
-
2014
- 2014-11-05 CN CN201410615212.0A patent/CN104330594A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2725905Y (en) * | 2004-07-06 | 2005-09-14 | 特变电工沈阳变压器集团有限公司 | Tester for transformer sleeve |
| CN2724378Y (en) * | 2004-09-10 | 2005-09-07 | 北京益弘泰科技发展有限责任公司 | Electromagnetic interference shield cover |
| CN201360392Y (en) * | 2009-01-21 | 2009-12-09 | 中兴通讯股份有限公司 | Electromagnetic shielding device |
| CN202695093U (en) * | 2012-05-18 | 2013-01-23 | 东莞市大忠电子有限公司 | Transformer with a shielding cover |
| CN202794256U (en) * | 2012-08-23 | 2013-03-13 | 云南电力试验研究院（集团）有限公司电力研究院 | Shielding cover for transformer test |
| CN103926434A (en) * | 2014-03-28 | 2014-07-16 | 国家电网公司 | Shielding cover for lightning arrester test |
| CN204116402U (en) * | 2014-11-05 | 2015-01-21 | 国网辽宁省电力有限公司抚顺供电公司 | High-power transformer partial discharge test radome |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113130191A (en) * | 2019-12-31 | 2021-07-16 | 济南西门子变压器有限公司 | Breakdown prevention device and reactor thereof |
| KR20230120385A (en) | 2022-02-09 | 2023-08-17 | 에이치디현대일렉트릭 주식회사 | Shield apparatus for bushing of transformer |
| CN115763017A (en) * | 2022-11-28 | 2023-03-07 | 山东迅驰电气有限公司 | Novel shielding case for partial discharge test of transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150204 |
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| RJ01 | Rejection of invention patent application after publication |