CN102708737A - Surface partial discharge model device of oil insulation transformer - Google Patents
Surface partial discharge model device of oil insulation transformer Download PDFInfo
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- CN102708737A CN102708737A CN2012101165591A CN201210116559A CN102708737A CN 102708737 A CN102708737 A CN 102708737A CN 2012101165591 A CN2012101165591 A CN 2012101165591A CN 201210116559 A CN201210116559 A CN 201210116559A CN 102708737 A CN102708737 A CN 102708737A
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Abstract
The invention discloses a surface partial discharge model device of oil insulation transformer, applied to the model test of an electrical power system. The model device comprises a needle electrode, a model shell, and a grounding electrode and an epoxy resin plate which are arranged in the model shell; wherein the model shell comprises a high voltage end plate, a grounding end plate and an organic glass cover arranged between the high voltage end plate and the grounding end plate; and the needle electrode is in a needle body which is made of a tungsten steel material and has a semicircular section. The invention has advantages as follows: according to the invention, the needle electrode passing through the high voltage end plate is arranged and the needle electrode is a needle body with the semicircular section; the high voltage electrode is designed as the needle electrode, thus a fixed discharge position can be generated and a stable discharge signal is obtained; and the needle electrode has a semicircular structure, a larger bottom surface and a larger diameter, thus the needle electrode has better resistance to corrosion and can be closely clung to the epoxy resin plate so as to produce the surface discharge on the interface of the epoxy resin plate and the insulation oil.
Description
Technical field
The present invention relates to a kind of electric power system model experimental provision, relate in particular to oil insulated transformer along face type shelf depreciation model equipment.
Background technology
Present existing simple in structure along surface model; Include only two copper electrodes and an insulating pad; Through the actual discharge experimental check, this model very easily produces permanent punch through damage, desired stability of data acquisition and repetition reliability in the time of can't satisfying the discharging model experiment.
Summary of the invention
The purpose of this invention is to provide a kind of oil insulated transformer along face type shelf depreciation model equipment, solution is existing very easily to be punctured in the High-Voltage Experimentation process along face type shelf depreciation model, and the problem of stable discharge signal can't be provided.
The present invention solves the problems of the technologies described above and adopts following technical scheme:
Oil insulated transformer is made up of pin electrode, model shell, the ground-electrode and the epoxy resin board that are arranged in the model shell along face type shelf depreciation model equipment; Wherein the model shell is by high pressure end plate, ground connection end plate, and the plexiglass tent that is arranged between the two constitutes; Said pin electrode is the needle body of cross section semicircular in shape;
The connection of each parts
Said ground-electrode is embedded in the ground connection end plate; Epoxy resin board is embedded in the high pressure end plate and is connected with ground electrode tip; Epoxy resin board is fixed epoxy resin board, ground-electrode and high pressure end plate through trip bolt between ground-electrode and high pressure end plate;
Said pin electrode passes the high pressure end plate, and its underpart and epoxy resin board are close to, and are located through dog screw.
Be provided with O-ring seal between above-mentioned plexiglass tent and the ground connection end plate.
The adjustable length of above-mentioned pin electrode, pin diameter 5mm, tip portion length 10mm, backshank length 40mm.
Above-mentioned pin electrode is the wolfram steel material.
Above-mentioned ground-electrode and pin electrode spacing 3mm.
Advantage of the present invention:
The present invention penetrates the pin electrode of said high pressure end plate through setting, and pin electrode is the needle body of cross section semicircular in shape.High-field electrode is designed to pin electrode, can produces fixing discharge position, obtain the stable discharge signal; Pin electrode is a semi-circular structure, has bigger bottom surface and bigger diameter, has better resistance to corrosion on the one hand, and can be close to epoxy resin board, guarantees on the interface of epoxy resin board and insulating oil, to produce creeping discharge.Device has been avoided very easily puncturing in the High-Voltage Experimentation process, and the stable discharge signal can be provided, and realizes the characteristic research that discharges along the face type in the oil insulated transformer.
Description of drawings
Fig. 1 is a sectional structure synoptic diagram of the present invention.
Among the figure, ground connection end plate 1, ground-electrode 2, plexiglass tent 3, high pressure end plate 4, pin electrode 5, dog screw 6, epoxy resin board 7, O-ring seal 8, trip bolt 9.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Structure of the present invention is as shown in Figure 1, and oil insulated transformer is made up of pin electrode 5, model shell and the ground-electrode 2 and the epoxy resin board 7 that are arranged in the model shell along face type shelf depreciation model equipment; Wherein the model shell is by high pressure end plate 4, ground connection end plate 1 (low pressure end plate), and the plexiglass tent that is arranged between the two constitutes; Said pin electrode is the needle body of cross section semicircular in shape;
Model shell and the ground-electrode 2 and epoxy resin board 7 that are arranged in the model shell; Wherein the model shell comprises high pressure end plate 4, the ground connection end plate 1 (low pressure end plate) that lays respectively at upper and lower, and the plexiglass tent 3 that is arranged between the two constitutes;
The connection of each parts
Said ground-electrode 2 is embedded in the ground connection end plate 1; Epoxy resin board 7 is embedded in the high pressure end plate 4 and is connected with the top of ground-electrode 2; Epoxy resin board 7 is between ground-electrode 2 and high pressure end plate 4, and is through trip bolt 9 that epoxy resin board 7, ground-electrode 2 is fixing with high pressure end plate 4.
Said pin electrode 5 passes high pressure end plate 4, and its underpart and epoxy resin board 7 are close to, and are located through dog screw 6.
Be provided with O-ring seal 9 between said plexiglass tent 3 and the ground connection end plate 1.
Said pin electrode 5 is the wolfram steel material.
Said pin electrode 5 is the needle body of cross section semicircular in shape, and promptly a needle body axially is cut into two halves.High-field electrode is designed to pin electrode 5, can produces fixing discharge position, obtain the stable discharge signal; Pin electrode 5 is a semi-circular structure, has bigger bottom surface and bigger diameter, has better resistance to corrosion on the one hand, and can be close to epoxy resin board, guarantees on the interface of epoxy resin board and insulating oil, to produce creeping discharge.
Embodiment 1
As shown in Figure 1, the pin diameter 5mm of pin electrode 5, tip portion length 10mm, backshank length 40mm.
When implementing, pin electrode 5 also can be suitable structures such as half-conical structure.
Be provided with O-ring seal 8 between concrete plexiglass tent 3 and the ground connection end plate 1.Be connected through four trip bolts 9 between epoxy resin board 7 and ground-electrode 2 and the high pressure end plate 4.Through each four screw retention up and down, and O-ring seal is realized isolatedly on the low pressure end plate, satisfies not having the slit leakage of oil under the discharging condition; Pin electrode, epoxy resin board and ground-electrode are immersed in the insulating oil, and insulating oil can use GB2536-1990 standard transformer oil No. 45.
When implementing, pin electrode 5 can be the wolfram steel material, thereby has good anticorrosive and oxidation resistance.
When implementing, ground-electrode 2 can be 3mm with the pin electrode spacing.
When implementing, plexiglass tent 3 can adopt double-layer structure, and bottom thickness 18mm is used for increasing O-ring seal 8 and ensures inside and outside completely cutting off, and other segment thicknesses 10mm is used for reducing the decay to radiation signal, improves sensitivity.
The use step of apparatus of the present invention is following:
1, pin electrode 5 is installed on the high pressure end plate 4, epoxy resin board 7 is installed, note confirming between epoxy resin board 7 and the pin electrode 5 very close to each other;
2, ground-electrode 2 is installed on ground connection end plate 1, is measured ground-electrode 2 and ground connection end plate 1 spacing d1;
3, add O-ring seal 8 backs plexiglass tent 6 is installed, compress the back and inject an amount of insulating oil;
4, high pressure end plate 4 is installed, is measured two end plates spacing d2;
5, surveyingpin electrode 5 length L, it is fixing afterbody to be reserved (L-(d2-d1-3mm));
6, install model after, applying discharging voltage is gathered the discharge radiation signal of continous-stable in the model side.
The above-mentioned the preferred embodiments of the present invention that are merely, all structures of making are on this basis replaced or are improved all to surely belong to and fall into protection scope of the present invention.
Claims (4)
1. oil insulated transformer is characterized in that along face type shelf depreciation model equipment: be made up of pin electrode, model shell, the ground-electrode and the epoxy resin board that are arranged in the model shell; Wherein the model shell is by high pressure end plate, ground connection end plate, and the plexiglass tent that is arranged between the two constitutes; Said pin electrode is the needle body of wolfram steel material, cross section semicircular in shape;
The connection of each parts
Said ground-electrode is embedded in the ground connection end plate; Epoxy resin board is embedded in the high pressure end plate and is connected with ground electrode tip; Epoxy resin board is fixed epoxy resin board, ground-electrode and high pressure end plate through trip bolt between ground-electrode and high pressure end plate;
Said pin electrode passes the high pressure end plate, and its underpart and epoxy resin board are close to, and are located through dog screw.
2. oil insulated transformer according to claim 1 is characterized in that along face type shelf depreciation model equipment: be provided with O-ring seal between said plexiglass tent and the ground connection end plate.
3. oil insulated transformer according to claim 1 is characterized in that along face type shelf depreciation model equipment: the adjustable length of said pin electrode, pin diameter 5mm, tip portion length 10mm, backshank length 40mm.
4. oil insulated transformer according to claim 2 is characterized in that along face type shelf depreciation model equipment: said ground-electrode and pin electrode spacing 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210116559.1A CN102708737B (en) | 2012-04-20 | 2012-04-20 | Surface partial discharge model device of oil insulation transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210116559.1A CN102708737B (en) | 2012-04-20 | 2012-04-20 | Surface partial discharge model device of oil insulation transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102708737A true CN102708737A (en) | 2012-10-03 |
| CN102708737B CN102708737B (en) | 2014-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210116559.1A Expired - Fee Related CN102708737B (en) | 2012-04-20 | 2012-04-20 | Surface partial discharge model device of oil insulation transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116581627A (en) * | 2023-07-12 | 2023-08-11 | 吉林省永利激光科技有限公司 | Gas laser |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3311988B2 (en) * | 1998-03-31 | 2002-08-05 | 島津理化器械株式会社 | Electrostatic high voltage generator |
| CN1604237A (en) * | 2004-10-22 | 2005-04-06 | 西安交通大学 | vacuum insulator coating capable of increasing flashover voltage and method of preparation thereof |
| KR100980468B1 (en) * | 2008-06-16 | 2010-09-07 | 주식회사 테라코리아 | Fuel cell educational kit |
| CN101957423A (en) * | 2010-09-16 | 2011-01-26 | 中国电力科学研究院 | Device for testing insulating property of high-voltage oiled paper |
-
2012
- 2012-04-20 CN CN201210116559.1A patent/CN102708737B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3311988B2 (en) * | 1998-03-31 | 2002-08-05 | 島津理化器械株式会社 | Electrostatic high voltage generator |
| CN1604237A (en) * | 2004-10-22 | 2005-04-06 | 西安交通大学 | vacuum insulator coating capable of increasing flashover voltage and method of preparation thereof |
| KR100980468B1 (en) * | 2008-06-16 | 2010-09-07 | 주식회사 테라코리아 | Fuel cell educational kit |
| CN101957423A (en) * | 2010-09-16 | 2011-01-26 | 中国电力科学研究院 | Device for testing insulating property of high-voltage oiled paper |
Non-Patent Citations (2)
| Title |
|---|
| 孙振权等: "高压变频电源作用下的油纸绝缘局部放电特性", 《西安交通大学学报》, vol. 45, no. 4, 30 April 2011 (2011-04-30) * |
| 王辉等: "温度对油纸绝缘沿面放电发展过程的影响", 《高电压技术》, vol. 36, no. 4, 30 April 2010 (2010-04-30) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116581627A (en) * | 2023-07-12 | 2023-08-11 | 吉林省永利激光科技有限公司 | Gas laser |
| CN116581627B (en) * | 2023-07-12 | 2023-09-15 | 吉林省永利激光科技有限公司 | Gas laser |
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| CN102708737B (en) | 2014-01-22 |
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Granted publication date: 20140122 Termination date: 20160420 |