CN102708737B - 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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- CN102708737B CN102708737B CN201210116559.1A CN201210116559A CN102708737B CN 102708737 B CN102708737 B CN 102708737B CN 201210116559 A CN201210116559 A CN 201210116559A CN 102708737 B CN102708737 B CN 102708737B
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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
At present existing simple in structure along surface model, only include two copper electrodes and an insulating pad, through actual discharge experimental check, this model very easily produces permanent punch through damage, the desired stability of data acquisition and repetition reliability in the time of cannot meeting discharging model experiment.
Summary of the invention
The object of this invention is to provide a kind of oil insulated transformer along face type shelf depreciation model equipment, solve and existingly along face type shelf depreciation model, in High-Voltage Experimentation process, very easily puncture, the problem of stable discharge signal cannot be provided.
The present invention solves the problems of the technologies described above and adopts following technical scheme:
Oil insulated transformer is comprised of pin electrode, model shell, the ground-electrode and the epoxy resin board that are arranged in model shell along face type shelf depreciation model equipment; Wherein model shell is by high pressure end plate, ground connection end plate, and the plexiglass tent being arranged between the two forms; Described pin electrode is the needle body of cross section semicircular in shape;
The connection of each parts
Described ground-electrode is embedded in ground connection end plate, epoxy resin board is embedded in high pressure end plate and is connected with ground electrode tip, epoxy resin board, between ground-electrode and high pressure end plate, is fixed epoxy resin board, ground-electrode and high pressure end plate by trip bolt;
Described pin electrode is through high pressure end plate, and its underpart and epoxy resin board are close to, and by dog screw, are located.
Between above-mentioned plexiglass tent and ground connection end plate, be provided with O-ring seal.
The length of above-mentioned pin electrode is adjustable, pin diameter 5mm, tip portion length 10mm, backshank length 40mm.
Above-mentioned pin electrode is 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 described high pressure end plate by 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 stable discharge signal; Pin electrode is semi-circular structure, has larger bottom surface and larger diameter, has better resistance to corrosion on the one hand, and can be close to epoxy resin board, guarantees to produce creeping discharge on the interface of epoxy resin board and insulating oil.Device has been avoided very easily puncturing in High-Voltage Experimentation process, and stable discharge signal can be provided, and realizes the characteristic research discharging along face type in oil insulated transformer.
Accompanying drawing explanation
Fig. 1 is sectional structure schematic diagram of the present invention.
In 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 drawings and Examples, the present invention is further illustrated.
As shown in Figure 1, oil insulated transformer is comprised of pin electrode 5, model shell and the ground-electrode 2 and the epoxy resin board 7 that are arranged in model shell along face type shelf depreciation model equipment structure of the present invention; Wherein model shell is by high pressure end plate 4, ground connection end plate 1 (low pressure end plate), and the plexiglass tent being arranged between the two forms; Described pin electrode is the needle body of cross section semicircular in shape;
Model shell and be arranged on ground-electrode 2 and the epoxy resin board 7 in model shell; Wherein 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 being arranged between the two forms;
The connection of each parts
Described ground-electrode 2 is embedded in ground connection end plate 1, epoxy resin board 7 is embedded in 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, by trip bolt 9, epoxy resin board 7, ground-electrode 2 is fixing with high pressure end plate 4.
Described pin electrode 5 is through high pressure end plate 4, and its underpart and epoxy resin board 7 are close to, and by dog screw 6, are located.
Between described plexiglass tent 3 and ground connection end plate 1, be provided with O-ring seal 9.
Described pin electrode 5 is wolfram steel material.
Described pin electrode 5 is the needle body of cross section semicircular in shape, and a needle body is axially cut into two halves.High-field electrode is designed to pin electrode 5, can produces fixing discharge position, obtain stable discharge signal; Pin electrode 5 is semi-circular structure, has larger bottom surface and larger diameter, has better resistance to corrosion on the one hand, and can be close to epoxy resin board, guarantees to produce creeping discharge on the interface of epoxy resin board and insulating oil.
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 can be also the suitable structures such as half-conical structure.
Between concrete plexiglass tent 3 and ground connection end plate 1, be provided with O-ring seal 8.Between epoxy resin board 7 and ground-electrode 2 and high pressure end plate 4, by four trip bolts 9, be connected.By each four screws up and down, fix, and on low pressure end plate, O-ring seal is realized isolatedly, meets and under discharging condition, does not have gap leakage of oil; Pin electrode, epoxy resin board and ground-electrode are immersed in insulating oil, and insulating oil can be used GB2536-1990 standard transformer oil No. 45.
When implementing, pin electrode 5 can be wolfram steel material, thereby has good anticorrosive and oxidation resistance.
When implementing, ground-electrode 2 can be 3mm with 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 as follows:
1, pin electrode 5 is installed on high pressure end plate 4, epoxy resin board 7 is installed, note confirming between epoxy resin board 7 and 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 the rear installation plexiglass tent 6 of O-ring seal 8, after compressing, inject appropriate insulating oil;
4, installation high-voltage end plate 4, measure two end plates spacing d2;
5, surveyingpin electrode 5 length L, reserve afterbody (L-(d2-d1-3mm)) fixing;
6, install after model, applying discharging voltage, at the electric discharge radiation signal of model side collection continous-stable.
Above are only the preferred embodiments of the present invention, 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, along face type shelf depreciation model equipment, is characterized in that: pin electrode, model shell, the ground-electrode and the epoxy resin board that are arranged in model shell, consist of; Wherein model shell is by high pressure end plate, ground connection end plate, and the plexiglass tent being arranged between the two forms; Described pin electrode is the needle body of wolfram steel material, cross section semicircular in shape;
The annexation of each parts:
Described ground-electrode is embedded in ground connection end plate center, epoxy resin board is embedded in high pressure end plate and is connected with ground electrode tip, epoxy resin board, between ground-electrode and high pressure end plate, is fixed epoxy resin board, ground-electrode and high pressure end plate by trip bolt;
Described pin electrode is through high pressure end plate, and its underpart and epoxy resin board are close to, and by dog screw, are located.
2. oil insulated transformer according to claim 1, along face type shelf depreciation model equipment, is characterized in that: between described plexiglass tent and ground connection end plate, be provided with O-ring seal.
3. oil insulated transformer according to claim 1, along face type shelf depreciation model equipment, is characterized in that: the length of described pin electrode is adjustable, pin diameter 5mm, tip portion length 10mm, backshank length 40mm.
4. oil insulated transformer according to claim 2, along face type shelf depreciation model equipment, is characterized in that: described 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 CN102708737A (en) | 2012-10-03 |
| CN102708737B true 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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| CN (1) | CN102708737B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3311988B2 (en) * | 1998-03-31 | 2002-08-05 | 島津理化器械株式会社 | Electrostatic high voltage generator |
| CN1284190C (en) * | 2004-10-22 | 2006-11-08 | 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 |
| CN101957423B (en) * | 2010-09-16 | 2014-01-29 | 中国电力科学研究院 | Device for testing insulating property of high-voltage oiled paper |
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