CN202929161U - Transformer ultrahigh frequency partial discharge positioning test apparatus - Google Patents
Transformer ultrahigh frequency partial discharge positioning test apparatus Download PDFInfo
- Publication number
- CN202929161U CN202929161U CN 201220589460 CN201220589460U CN202929161U CN 202929161 U CN202929161 U CN 202929161U CN 201220589460 CN201220589460 CN 201220589460 CN 201220589460 U CN201220589460 U CN 201220589460U CN 202929161 U CN202929161 U CN 202929161U
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- transformer
- oil tank
- partial discharge
- fuel tank
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Abstract
The utility model discloses a transformer ultrahigh frequency partial discharge positioning test apparatus comprises a power frequency no-partial-discharge test transformer and a test oil tank. The test oil tank is filled with transformer oil, and an oil paper insulation defect model can be disposed in the test oil tank; a high pressure is inducted to the top of the test oil tank through a casing pipe, the whole test oil tank is connected to the ground through a grounding terminal, the side surface of the test oil tank is provided with a circular port, and a sensor interface is provided for ultrahigh frequency measurement; the high voltage output terminal of the power frequency no-partial-discharge test transformer is connected with a coupling capacitor, and a high voltage electrode is in parallel connection with the coupling capacitor; and a high voltage wall bushing is employed for the insulation between the top of the test fuel tank and the high voltage electrode, and the high voltage electrode is introduced to the test oil tank through the high voltage wall bushing. According to the transformer ultrahigh frequency partial discharge positioning test apparatus, the defect model is disposed in the test oil tank, effective simulation of partial discharge condition when the transformer runs is achieved, the side wall of the oil tank is provided with a circular hole, and a signal is provided for an ultrahigh frequency sensor.
Description
Technical field
The utility model relates to a kind of test unit of partial discharge of transformer, is specifically related to a kind of transformer superfrequency shelf depreciation location test device.
Background technology
Power transformer is the key equipment in electrical network, and its safe operation relation the safe operation of whole electrical network.Shelf depreciation is to cause the main cause of transformer fault, is also the early stage performance of fault, by shelf depreciation being detected and locates, can clear failure the position, for analysis and the maintenance in later stage of fault provides important guidance.
In the location test of transformer, need to obtain the mistiming signal by multiple sensor, and then calculate the particular location of defective, therefore when positioning test, test unit has important effect, and is also higher to the requirement of test unit.
The utility model content
For the deficiencies in the prior art, the utility model proposes a kind of transformer superfrequency shelf depreciation location test device, be intended to realize the location test of the inner Partial Discharge Sources of transformer, for location algorithm etc. provides clear and definite mistiming signal.
Content of the present utility model is:
A kind of transformer superfrequency shelf depreciation location test device comprises:
Power frequency partial discharge-free test transformer (1) and a test fuel tank (4) wherein, are full of transformer oil in the test fuel tank, and place paper oil insulation defect model (5); The test top of oil-tank is introduced high pressure by sleeve pipe, and test fuel tank side has four circular ports (7), and the arrangement that assumes diamond in shape of four circular ports, for the superfrequency measurement provides sensor interface;
The high-voltage output end of described power frequency partial discharge-free test transformer is connected to coupling capacitance (2), and wherein, high-field electrode is in parallel with coupling capacitance (2);
Adopt high-voltage wall bushing (3) to insulate between test top of oil-tank and described high-field electrode, described high-field electrode is introduced the test fuel tank by wall bushing (3).
Effect of the present utility model is: by place defect model in the test fuel tank, the operating mode of shelf depreciation occurs when effectively analogue transformer moves, fuel tank side tank wall has the circular hole that four rhombuses are placed, can be four tunnel superfrequency sensors signal is provided, carry out the Partial Discharge Sources location test.
Description of drawings
Fig. 1 is the structural representation of the shelf depreciation location test device that the utility model proposes;
Fig. 2 is test tank surface sensor arrangenent diagram.
Embodiment
Shelf depreciation location test apparatus structure schematic diagram as shown in Figure 1, in test unit, (1) is the power frequency partial discharge-free test transformer, rated voltage 200kV, rated capacity 20kVA, lower innings of 200kV is high-volume less than 10pC.(2) be coupling capacitance, the appearance value is 1000pF.(3) be high-voltage wall bushing, high pressure is introduced the test fuel tank.(4) be fuel tank, adopt metal construction and ground connection.(5) be the discharge defect model, (6) are metab, brass material.(7) be four round holes on the fuel tank face, adopt the organic glass sealing, be arranged in fourcorneous water caltrop shape, as shown in Figure 2, for four road ultrahigh-frequency signals provide signal, locate for Partial Discharge Sources.
During test, the test high pressure is introduced in the test fuel tank by high-voltage wall bushing, is connected with defect model, for defect model provides trial voltage; The detection of partial-discharge ultrahigh-frequency signal is carried out in four circular organic glass holes by tank surface, after obtaining four road ultrahigh-frequency signals, can carry out the Partial Discharge Sources location.
This transformer superfrequency shelf depreciation location test device can be the superfrequency Partial Discharge Detection provides four road ultrahigh-frequency signals, for the Partial Discharge Sources location test.
More than utilize specific case that principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for those skilled in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (3)
1. transformer superfrequency shelf depreciation location test device comprises:
Power frequency partial discharge-free test transformer (1) and a test fuel tank (4) wherein, are full of transformer oil in the test fuel tank, and place paper oil insulation defect model (5); The test top of oil-tank is introduced high pressure by sleeve pipe, and test fuel tank side has four circular ports (7), and the arrangement that assumes diamond in shape of four circular ports, for the superfrequency measurement provides sensor interface;
The high-voltage output end of described power frequency partial discharge-free test transformer is connected to coupling capacitance (2), and wherein, high-field electrode is in parallel with coupling capacitance (2);
Adopt high-voltage wall bushing (3) to insulate between test top of oil-tank and described high-field electrode, described high-field electrode is introduced the test fuel tank by wall bushing (3).
2. test unit according to claim 1 is characterized in that: whole test fuel tank (4) is by ground terminal ground connection.
3. test unit according to claim 1, is characterized in that: the sealing of described circular port (7) employing organic glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220589460 CN202929161U (en) | 2012-11-10 | 2012-11-10 | Transformer ultrahigh frequency partial discharge positioning test apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220589460 CN202929161U (en) | 2012-11-10 | 2012-11-10 | Transformer ultrahigh frequency partial discharge positioning test apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202929161U true CN202929161U (en) | 2013-05-08 |
Family
ID=48219108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220589460 Expired - Lifetime CN202929161U (en) | 2012-11-10 | 2012-11-10 | Transformer ultrahigh frequency partial discharge positioning test apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202929161U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732471A (en) * | 2018-04-26 | 2018-11-02 | 天津大学 | Multiple physical field based on superfrequency method couples paper oil insulation partial discharge detecting system |
| CN108732472A (en) * | 2018-04-26 | 2018-11-02 | 天津大学 | Compound field based on high-frequency method couples paper oil insulation partial discharge detecting system |
| CN109870638A (en) * | 2019-02-25 | 2019-06-11 | 华能国际电力股份有限公司 | Entity transformer for partial discharge defect simulation test |
-
2012
- 2012-11-10 CN CN 201220589460 patent/CN202929161U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732471A (en) * | 2018-04-26 | 2018-11-02 | 天津大学 | Multiple physical field based on superfrequency method couples paper oil insulation partial discharge detecting system |
| CN108732472A (en) * | 2018-04-26 | 2018-11-02 | 天津大学 | Compound field based on high-frequency method couples paper oil insulation partial discharge detecting system |
| CN109870638A (en) * | 2019-02-25 | 2019-06-11 | 华能国际电力股份有限公司 | Entity transformer for partial discharge defect simulation test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130508 |
|
| CX01 | Expiry of patent term |