CN202649383U - Oil insulated transformer partial discharge experimental model - Google Patents
Oil insulated transformer partial discharge experimental model Download PDFInfo
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- CN202649383U CN202649383U CN 201220168574 CN201220168574U CN202649383U CN 202649383 U CN202649383 U CN 202649383U CN 201220168574 CN201220168574 CN 201220168574 CN 201220168574 U CN201220168574 U CN 201220168574U CN 202649383 U CN202649383 U CN 202649383U
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Abstract
The utility model discloses an oil insulated transformer partial discharge experimental model which is applied in electrical power system model experiments. The oil insulated transformer partial discharge experimental model is composed of a pin electrode, a model housing, a grounding electrode and an epoxy resin plate, wherein the grounding electrode and the epoxy resin plate are arranged in the model housing. The model housing is composed of a high-voltage end plate, a grounding end plat, and an organic glass cover which is arranged between the high-voltage end plate and the grounding end plate. The pin electrode is a pin whose cross section is semicircular. The oil insulated transformer partial discharge experimental model of the utility model has the following advantages: by arranging the pin electrode which passes through the high-voltage end plate and whose cross section is semicircular and designing a high-voltage electrode into the pin electrode, a fixed discharge position can be generated, and a stable discharge signal is generated; the pin electrode has a semicircular structure having a large bottom surface and a large diameter, so the advantage of better corrosion resistance is realized on the one hand, and the pin electrode can cling to the epoxy resin plate on the other hand so as to ensure that the creeping discharge phenomenon is generated at the interface between the epoxy resin plate and the insulating oil.
Description
Technical field
The utility model relates to a kind of electric system empirical model, relates in particular to oil insulated transformer shelf depreciation empirical model.
Background technology
Present existing laboratory model construction is simple, include only two copper electrodes and an insulating pad, through the 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 can't satisfying the discharging model experiment.
The utility model content
The purpose of this utility model provides a kind of oil insulated transformer shelf depreciation empirical model, solves existing shelf depreciation model and very easily punctures in the High-Voltage Experimentation process, and the problem of stable discharge signal can't be provided.
The utility model solves the problems of the technologies described above and adopts following technical scheme:
Oil insulated transformer shelf depreciation empirical model is comprised 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 consists of; Described pin electrode is the needle body of cross section semicircular in shape;
The annexation of each parts is as follows:
Described 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 by trip bolt between ground-electrode and high pressure end plate;
Described pin electrode passes the high pressure end plate, and its underpart and epoxy resin board are close to, and are located by dog screw.
Be provided with O-ring seal between above-mentioned plexiglass tent and the ground connection end plate.
The length of above-mentioned pin electrode is adjustable, pin diameter 5mm, tip portion length 10mm, backshank length 40mm.
Above-mentioned ground-electrode and pin electrode spacing 3mm.
Advantage of the present utility model:
The utility model 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 at the interface of epoxy resin board and insulating oil.Device has been avoided very easily puncturing in the High-Voltage Experimentation process, and 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 the utility model sectional structure schematic diagram.
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 drawings and Examples the utility model is further described.
The utility model structure as shown in Figure 1, oil insulated transformer shelf depreciation empirical model is comprised of pin electrode 5, model shell and the ground-electrode 2 and the epoxy resin board 7 that are arranged in the model shell; 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 consists of; Described pin electrode is the needle body of cross section semicircular in shape;
Model shell and the ground-electrode 2 and the 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 consists of;
The connection of each parts
Described 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 by trip bolt 9 that epoxy resin board 7, ground-electrode 2 is fixing with high pressure end plate 4.
Described pin electrode 5 passes high pressure end plate 4, and its underpart and epoxy resin board 7 are close to, and are located by dog screw 6.
Be provided with O-ring seal 9 between described plexiglass tent 3 and the ground connection end plate 1.
Described pin electrode 5 is the wolfram steel material.
Described pin electrode 5 is the needle body of cross section semicircular in shape, and namely a needle body axially is 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 at 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 also can be the suitable structures such as half-conical structure.
By dog screw 6 location, length is adjustable at high pressure end plate 4 for concrete pin electrode 5; Pin electrode 5 bottoms and described epoxy resin board 7 are close to, and guarantee can not depart from epoxy resin board when pin slides, in the error 0.1mm.Pin electrode 5 length can be measured and adjust by the length of stretching out high pressure end plate 4, can access the discharge in the adjustable fixedly discharging gap situation, and model has repeatability and portability.
Be provided with O-ring seal 8 between concrete plexiglass tent 3 and the ground connection end plate 1.Be connected by four trip bolts 9 between epoxy resin board 7 and ground-electrode 2 and the high pressure end plate 4.Fix by each four screw 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 the utility model device is as follows:
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, at ground connection end plate 1 ground-electrode 2 is installed, is measured ground-electrode 2 and ground connection end plate 1 spacing d1;
3, add O-ring seal 8 rear installation plexiglass tents 6, inject an amount of insulating oil after compressing;
4, the 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 model after, applying discharging voltage gathers the discharge radiation signal of continous-stable in the model side.
Above-mentioned only is preferred embodiment of the present utility model, and all structures of making are on this basis replaced or improved all to surely belong to and fall into protection domain of the present utility model.
Claims (2)
1. oil insulated transformer shelf depreciation empirical model is characterized in that: be comprised 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 consists of; Described pin electrode is the needle body of cross section semicircular in shape;
The annexation of each parts is as follows:
Described 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 by trip bolt between ground-electrode and high pressure end plate;
Described pin electrode passes the high pressure end plate, and its underpart and epoxy resin board are close to, and are located by dog screw.
2. oil insulated transformer shelf depreciation empirical model according to claim 1 is characterized in that: be provided with O-ring seal between described plexiglass tent and the ground connection end plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220168574 CN202649383U (en) | 2012-04-20 | 2012-04-20 | Oil insulated transformer partial discharge experimental model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220168574 CN202649383U (en) | 2012-04-20 | 2012-04-20 | Oil insulated transformer partial discharge experimental model |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202649383U true CN202649383U (en) | 2013-01-02 |
Family
ID=47418474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220168574 Expired - Fee Related CN202649383U (en) | 2012-04-20 | 2012-04-20 | Oil insulated transformer partial discharge experimental model |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202649383U (en) |
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2012
- 2012-04-20 CN CN 201220168574 patent/CN202649383U/en not_active Expired - Fee Related
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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: 20130102 Termination date: 20140420 |