CN201773689U - 110 kV partial discharge-free three-phase electromagnetic voltage transformer - Google Patents
110 kV partial discharge-free three-phase electromagnetic voltage transformer Download PDFInfo
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- CN201773689U CN201773689U CN2009202865049U CN200920286504U CN201773689U CN 201773689 U CN201773689 U CN 201773689U CN 2009202865049 U CN2009202865049 U CN 2009202865049U CN 200920286504 U CN200920286504 U CN 200920286504U CN 201773689 U CN201773689 U CN 201773689U
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Abstract
A 110 kV partial discharge-free three-phase electromagnetic voltage transformer comprises a housing, a three-phase basin-type insulator, three primary windings, three secondary windings, three layer insulators, three winding shields, three iron cores, three iron core shields and three iron core clamping pieces, wherein the housing is filled with sulfur hexafluoride gas, and the upper end of the housing is sealed through the three-phase basin-type insulator; the three secondary windings are nested on the iron cores; the three primary windings are nested on the secondary windings; the three winding shields are nested on the primary windings; the three layer insulators are arranged among the layers of the primary windings and the secondary windings; the three iron core shields are arranged on both sides of the primary windings and the secondary windings; and the three iron core clamping pieces are respectively arranged at the two ends of the iron cores, are integral with the three iron core shields and are used for fixing and clamping the primary windings, the secondary windings and the iron cores. The utility model has high insulators utilization ratio, small winding volume and product volume and light weight, uses little insulating material and reduces the use level of such raw material as non-ferrous metal and insulating medium.
Description
Technical field
The utility model relates to a kind of voltage transformer, and being specifically related to a kind of 110kV does not have office and put three-phase electricity magnetic-type voltage transformer.
Background technology
The development of advancing by leaps and bounds along with electric utility, to the fail safe of power transmission and transforming equipment, reliability requirement also in continuous raising, especially concerning High-Voltage Electrical Appliances, the quality of insulation property then is the key of fail safe, reliability, and a leading indicator that influences the High-Voltage Electrical Appliances insulation property is exactly a partial discharge quantity; Discharge generation is arranged in the insulation, illustrate that at first field intensity is inhomogeneous, the product defectiveness; In addition, the long term of partial discharge can produce tangible destruction to insulating material.
Standard GB 1207-2006 " electromagnetic potential transformer " regulation; the partial discharge quantity of voltage transformer under highest voltage for equipment should be less than 10pC; though present stage, national standard had clear and definite regulation, the accident of insulation breakdown also takes place in such product through regular meeting in actual motion.So how to improve the insulation margin of voltage transformer, reducing partial discharge quantity is an important topic of instrument transformer industry.Domestic some enterprise is for improving the dielectric strength of instrument transformer at present, reduce local discharging level, do the volume of like product very big, it is very inconvenient that transportation is installed, many raw material have also been wasted, improved manufacturing cost, this product price is very expensive, and does not also see the report that no office puts under power-frequency withstand voltage.
In view of the above problems, the utility model discloses a kind of 110kV does not have office and puts three-phase electricity magnetic-type voltage transformer.It has technical characterictic as mentioned below, to solve existing problem.
The utility model content
The purpose of this utility model provides a kind of 110kV not to be had office and puts three-phase electricity magnetic-type voltage transformer, and it can improve the insulation margin of voltage transformer, makes under the power-frequency withstand voltage partial discharge quantity less than 5pC, and accomplishes that volume and weight is all small and light than like product.
A kind of 110kV of the utility model does not have the purpose that office puts three-phase electricity magnetic-type voltage transformer and is achieved through the following technical solutions: a kind of 110kV does not have office puts three-phase electricity magnetic-type voltage transformer, comprises housing, three-phase disc insulator and is separately positioned on three windings in the housing, three secondary winding, three layer insulation, three winding shieldings, three iron cores, three iron cores shieldings and three iron core folders.
Be full of sulfur hexafluoride gas in the described housing, the housing upper end connects the sealing of three-phase disc insulator.
Described three secondary winding correspondence respectively are nested with on iron core.
Described three windings correspondence respectively are nested with on secondary winding.
Described three windings shield respectively correspondence and are nested with on winding.
Described three layers insulation be corresponding respectively to be arranged on the interlayer of winding and secondary winding.
Described three iron cores shielding is corresponding respectively to be arranged on the both sides of winding and secondary winding.
Described three iron core folders correspondence respectively are arranged on the iron core two ends, and form one with three iron core shieldings respectively, fix to clamp winding, secondary winding and iron core one time.
Described three iron cores are " Y " font to be placed, and the angle of adjacent two iron cores is 120 °, and it is cylindric that housing is, and the center of three iron cores overlaps with the center of circle of housing.
Above-mentioned a kind of 110kV does not have office puts three-phase electricity magnetic-type voltage transformer, and wherein, a described winding is to wait the electric capacity winding, and this winding is trapezoidal, successively successively decreases from the bottom to top.
Above-mentioned a kind of 110kV does not have office puts three-phase electricity magnetic-type voltage transformer, and wherein, described iron core lateral column outside is multistage circle.
Above-mentioned a kind of 110kV does not have office puts three-phase electricity magnetic-type voltage transformer, and wherein, the gauge pressure scope of described sulfur hexafluoride gas in housing is 0.4-0.5Mp.
Above-mentioned a kind of 110kV does not have office puts three-phase electricity magnetic-type voltage transformer, wherein, also comprises three electrodes; One end of described electrode is fixedlyed connected with the three-phase disc insulator by bolt.
Above-mentioned a kind of 110kV does not have office puts three-phase electricity magnetic-type voltage transformer, and wherein, the other end of described three electrodes shields corresponding connections with three windings respectively, and a described winding is fixed in the housing by electrode and three-phase disc insulator.
Above-mentioned a kind of 110kV does not have office puts three-phase electricity magnetic-type voltage transformer, wherein, also comprises a plurality of electrode screenings, and the upper end of described each electrode screening and three-phase disc insulator are bolted to connection, and electrode screening difference cover cap is on electrode.
A kind of 110kV of the utility model does not have office puts three-phase electricity magnetic-type voltage transformer owing to adopted such scheme, makes it compared with prior art, has following advantage and good effect:
1, a kind of 110kV of the utility model do not have office put three-phase electricity magnetic-type voltage transformer since adopt successively successively decrease, etc. the trapezoidal winding of capacitor design, effectively raise the insulation utilance, reduced the use of insulating material, dwindled the volume of winding greatly.
2, a kind of 110kV of the utility model does not have office and puts three-phase electricity magnetic-type voltage transformer owing to adopted the iron core of imitated structure, also reduced raw-material consumptions such as non-ferrous metal, dielectric when reducing small product size, small product size is littler, weight is lighter thereby make.
3, a kind of 110kV of the utility model does not have office and puts under the three-phase electricity magnetic-type voltage transformer industrial frequency withstand voltage 230kV partial discharge quantity less than 5pC, its volume and weight are all than the little 20%-30% of like product simultaneously, not only improve the fail safe and the reliability of high-tension apparatus operation, also saved many raw material.
Below; to be described further by specific embodiment; yet embodiment only is giving an example of the optional execution mode of the utility model, and its disclosed feature only is used for explanation and sets forth the technical solution of the utility model, and is not used in qualification protection range of the present utility model.
Description of drawings
In order better to understand the utility model, the accompanying drawing for your guidance that can quote with reference to this specification, in the accompanying drawing:
Fig. 1 is that a kind of 110kV of the utility model does not have the cutaway view that the front view of three-phase electricity magnetic-type voltage transformer is put in office.
Fig. 2 is that a kind of 110kV of the utility model does not have the cutaway view that the vertical view of three-phase electricity magnetic-type voltage transformer is put in office.
Embodiment
According to claim of the present utility model and the disclosed content of utility model content, the technical solution of the utility model is specific as follows described.
See also shown in the accompanying drawing 1, and in conjunction with the accompanying drawings shown in 2, a kind of 110kV of the utility model does not have office to be put three-phase electricity magnetic-type voltage transformer and comprises housing 1, three-phase disc insulator 2 and be separately positioned on three windings 11 in the housing 1, three secondary winding 12, three 14, three iron cores of 13, three windings shieldings of layer insulation 15, three 16 and three iron core folders 17 of iron core shielding; Be full of sulfur hexafluoride gas in the housing 1, sulfur hexafluoride gas plays the effect of insulation, there are 2 sealings of three-phase disc insulator housing 1 upper end, three-phase disc insulator 2 passes through supported flange, sealing ring, bolted, three secondary winding 12 correspondence respectively are nested with on three iron cores 15, three windings 11 correspondence respectively are nested with on three secondary winding 12, three windings shielding 14 correspondence respectively is nested with on three windings 11, three corresponding respectively interlayers that are arranged on three windings 11 and three secondary winding 12 of layer insulation 13, three corresponding respectively both sides that are arranged on three windings 11 and three secondary winding 12 of iron core shielding 16, three iron core folders 17 correspondence respectively are arranged on the iron core two ends, and form one with three iron core shieldings 16 respectively, fix and clamp one time winding 11, secondary winding 12 and iron core 15, three iron cores 15 are " Y " font and place, the angle of adjacent two iron cores 15 is 120 °, housing 1 is cylindric, the center of three iron cores 15 overlaps with the center of circle of housing 1, a winding 11 is to wait the electric capacity winding, iron core folder 17 extends downwardly into the bottom of housing 1, and fixedly connected with the bottom of housing 1, this winding 11 is trapezoidal, successively successively decrease from the bottom to top, each iron core 15 is rounded, and the gauge pressure scope of sulfur hexafluoride gas in housing 1 is 0.4-0.5Mp.
Also comprise three electrodes 3 and the three-phase disc insulator 2 that is connected with electrode 3 one ends, electrode 3 is a high-field electrode, three-phase disc insulator 2 is arranged on the upper end open place of housing 1, the other end of three electrodes 3 is connected with winding shielding 14, one time winding 11 is fixed in the housing 1 by electrode 3 and three-phase disc insulator 2, also comprise a terminal box 4, terminal box 4 is arranged on a side of housing 1, and be tightly connected with housing 1, the outlet terminal (not shown) of each secondary winding 12 is drawn by terminal block respectively, and be arranged in the terminal box 4, also comprise a plurality of electrode screenings 5, fixedly connected with three-phase disc insulator 2 in the upper end of each electrode screening 5, electrode screening 5 difference cover caps are on electrode 3.Side at housing 1 is provided with a charge valve 6, this charge valve 6 is tightly connected with housing 1, the dielectric sulfur hexafluoride gas charges in the whole housing 1 by charge valve 6, and sulfur hexafluoride gas is the very high a kind of gases of insulation property, and the gauge pressure of sulfur hexafluoride gas is preferably 0.5Mp.
Also comprise a burst disk 7 and a pair of leg 8, burst disk 7 is arranged on the bottom center of housing 1, and to guarantee the safety of equipment, a pair of leg 8 is separately positioned on the two ends, the left and right sides of the bottom of housing 1, and fixedlys connected with the bottom of housing 1 by screw and nut.
A kind of 110kV of the utility model does not have the operation principle that office puts three-phase electricity magnetic-type voltage transformer: by the principle and the dielectric of electromagnetic conversion; the high voltage of power transmission and transformation line is converted to low-voltage; promptly a winding 11 is connected on the combined electrical apparatus by electrode 3, three-phase disc insulator 2 and is connected with the high pressure of electric power system; like this; high voltage becomes low-voltage output by the electromagnetic conversion of winding 11, iron core 15 and a secondary winding 12; the outlet terminal of secondary winding 12 is connected in the terminal box 4, and power supply can be measured and used for relay protection.Electrode screening 5 and iron core shielding 16 are evenly to design for the electric field that makes a high-field electrode 3 and a winding 11.
In sum, a kind of 110kV of the utility model do not have office put three-phase electricity magnetic-type voltage transformer since adopt successively successively decrease, etc. the trapezoidal winding of capacitor design, effectively raise the insulation utilance, reduced the use of insulating material, dwindled the volume of winding greatly; The utility model has also reduced raw-material consumptions such as non-ferrous metal, dielectric owing to adopted the iron core of imitated structure when reducing small product size, small product size is littler, weight is lighter thereby make; Partial discharge quantity is less than 5pC under the utility model industrial frequency withstand voltage 230kV, and its volume and weight have not only improved the fail safe and the reliability of high-tension apparatus operation all than the little 20%-30% of like product simultaneously, have also saved many raw material.
Foregoing is that a kind of 110kV of the utility model does not have the exemplifying of specific embodiment that three-phase electricity magnetic-type voltage transformer is put in office, for the wherein not equipment of detailed description and structure, should be understood to take existing common apparatus in this area and universal method to be implemented.
Claims (7)
1. a 110kV does not have office and puts three-phase electricity magnetic-type voltage transformer, it is characterized in that: comprise housing, three-phase disc insulator and be separately positioned on three windings in the housing, three secondary winding, three layer insulation, three winding shieldings, three iron cores, three iron cores shieldings and three iron core folders;
Be full of sulfur hexafluoride gas in the described housing, there is the sealing of three-phase disc insulator the housing upper end;
Described three secondary winding correspondence respectively are nested with on iron core;
Described three windings correspondence respectively are nested with on secondary winding;
Described three windings shield respectively correspondence and are nested with on winding;
Described three layers insulation be corresponding respectively to be arranged on the interlayer of winding and secondary winding;
Described three iron cores shielding is corresponding respectively to be arranged on the both sides of winding and secondary winding;
Described three iron core folders correspondence respectively are arranged on the iron core two ends, and form one with three iron core shieldings respectively, fix and clamp one time winding, secondary winding and iron core;
Described three iron cores are " Y " font to be placed, and the angle of adjacent two iron cores is 120 °, and it is cylindric that housing is, and the center of three iron cores overlaps with the center of circle of housing.
2. a kind of 110kV according to claim 1 does not have office puts three-phase electricity magnetic-type voltage transformer, it is characterized in that: a described winding is to wait the electric capacity winding, and this winding is trapezoidal, successively successively decreases from the bottom to top.
3. a kind of 110kV according to claim 1 does not have office puts three-phase electricity magnetic-type voltage transformer, and it is characterized in that: described iron core is multistage circle.
4. a kind of 110kV according to claim 1 does not have office puts three-phase electricity magnetic-type voltage transformer, and it is characterized in that: the gauge pressure scope of described sulfur hexafluoride gas in housing is 0.4-0.5Mp.
5. a kind of 110kV according to claim 1 does not have office puts three-phase electricity magnetic-type voltage transformer, it is characterized in that: also comprise three electrodes; One end of described electrode is fixedlyed connected with the three-phase disc insulator by bolt.
6. a kind of 110kV according to claim 5 does not have office puts three-phase electricity magnetic-type voltage transformer, it is characterized in that: the other end of described three electrodes presses closer and three corresponding connections of winding shielding by spring respectively, and a described winding is fixed in the housing by electrode and three-phase disc insulator.
7. a kind of 110kV according to claim 6 does not have office puts three-phase electricity magnetic-type voltage transformer, it is characterized in that: also comprise a plurality of electrode screenings, the upper end of described each electrode screening and three-phase disc insulator are bolted to connection, and electrode screening difference cover cap is on electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202865049U CN201773689U (en) | 2009-12-28 | 2009-12-28 | 110 kV partial discharge-free three-phase electromagnetic voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202865049U CN201773689U (en) | 2009-12-28 | 2009-12-28 | 110 kV partial discharge-free three-phase electromagnetic voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201773689U true CN201773689U (en) | 2011-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202865049U Expired - Fee Related CN201773689U (en) | 2009-12-28 | 2009-12-28 | 110 kV partial discharge-free three-phase electromagnetic voltage transformer |
Country Status (1)
| Country | Link |
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| CN (1) | CN201773689U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474221A (en) * | 2013-09-05 | 2013-12-25 | 江苏思源赫兹互感器有限公司 | Novel voltage transformer |
| CN103500636A (en) * | 2013-09-23 | 2014-01-08 | 保定天威互感器有限公司 | Three-phase gas voltage transformer |
| CN104240927A (en) * | 2014-09-18 | 2014-12-24 | 江苏科兴电器有限公司 | Electromagnetic voltage transformer |
| CN108172385A (en) * | 2017-12-29 | 2018-06-15 | 上海吴淞电气实业有限公司 | A kind of isolated electromagnetic voltage mutual inductor |
| CN111292943A (en) * | 2018-12-06 | 2020-06-16 | 河南平芝高压开关有限公司 | GIS type semi-casting external current transformer and GIS equipment |
-
2009
- 2009-12-28 CN CN2009202865049U patent/CN201773689U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474221A (en) * | 2013-09-05 | 2013-12-25 | 江苏思源赫兹互感器有限公司 | Novel voltage transformer |
| CN103474221B (en) * | 2013-09-05 | 2015-09-23 | 江苏思源赫兹互感器有限公司 | A kind of novel voltage transformer |
| CN103500636A (en) * | 2013-09-23 | 2014-01-08 | 保定天威互感器有限公司 | Three-phase gas voltage transformer |
| CN104240927A (en) * | 2014-09-18 | 2014-12-24 | 江苏科兴电器有限公司 | Electromagnetic voltage transformer |
| CN108172385A (en) * | 2017-12-29 | 2018-06-15 | 上海吴淞电气实业有限公司 | A kind of isolated electromagnetic voltage mutual inductor |
| CN111292943A (en) * | 2018-12-06 | 2020-06-16 | 河南平芝高压开关有限公司 | GIS type semi-casting external current transformer and GIS equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20111228 |