CN204028238U - A kind of failure analog device of transformer - Google Patents
A kind of failure analog device of transformer Download PDFInfo
- Publication number
- CN204028238U CN204028238U CN201420164658.1U CN201420164658U CN204028238U CN 204028238 U CN204028238 U CN 204028238U CN 201420164658 U CN201420164658 U CN 201420164658U CN 204028238 U CN204028238 U CN 204028238U
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- Prior art keywords
- pressure winding
- transformer
- high pressure
- winding
- casing tube
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Abstract
The utility model openly provides a kind of failure analog device of transformer, comprising: three transformers.Wherein, the first transformer comprises a plurality of high pressure winding casing tubes, and the terminals of a plurality of high pressure winding casing tubes connect respectively the diverse location of high pressure winding coil.Between the top and the bottom insulated coil of the second transformer and iron core, be provided with for regulating the fastening bolt of the height of high pressure winding, and between high pressure winding and low pressure winding, be provided with for making high pressure winding outwardly convex, the stay that low pressure winding caves inward.The 3rd transformer is as the transformer of simulation winding warpage fault.Three transformers are separate, can simulate the comparatively complicated fault such as short circuit, displacement, warpage and bulge of winding simultaneously.
Description
Technical field
The utility model relates to transformer detection field, relates in particular a kind of failure analog device of transformer.
Background technology
Since entering 21 century, be accompanied by economic very big development, national life level has also reached a new high, and corresponding people are also more and more higher to the demand of various consumers, and this just impels electric system will accelerate the construction of self.
In electric system, transformer is one of expensive and important equipment.Along with improving constantly of electric pressure, the probability that transformer breaks down is more and more higher, once and fault occurs, will cause a regional large area, have a power failure for a long time, cause the very big inconvenience of economic heavy losses and life.In recent years relevant statistics shows, the accident that national 110kV and above transformer are caused by winding accounts for 71.1% of total casual clearing station time, and as the accident that transformer occurred is classified by damaged location, the accident that winding causes occupies the 1st.From strip inspection situation, the overwhelming majority is the winding deformation being caused not by short-circuit strength.Under normal circumstances, the electromagnetic stress of transformer is little, but when being short-circuited fault, particularly (generally include cutting-out of voltage changer during the short trouble of near region, three kinds of faults of inner lead short circuit and phase fault or winding shorted to earth), to there is very large short-circuit current in the low-pressure side of transformer, the huge stress being produced by short-circuit current (increasing thousands of times in compared with normal situation) will act in Transformer Winding, now, if be used for the wire rod of coiling winding, there is physical strength (as used aluminium wire) not, or it is not fixing firm, also or wire insulation there is the deteriorated situation of heat, winding just may deform.Therefore for find in time transformer accident potential, avoid burst accident, improve transformer operational reliability, the research tool of carrying out transformer winding fault diagnosis is of great significance.
In order to simulate smoothly the various distortion faults of winding in testing laboratory, to transformer winding fault, diagnosis is comparatively comprehensively studied, and is badly in need of a kind of special failure analog device of transformer.Transformer fault model equipment can not be simulated comparatively complicated winding failure at present, such as: the short circuit of winding, displacement, warpage and bulge.
Utility model content
In view of this, the utility model provides a kind of failure analog device of transformer, with winding failure complicated in analogue transformer.
For achieving the above object, the utility model provides following technical scheme:
A failure analog device of transformer, comprising: three separate transformers, and the first transformer comprises a plurality of high pressure winding casing tubes, the terminals of described a plurality of high pressure winding casing tubes connect respectively the diverse location of high pressure winding coil;
The top and the bottom insulating end ring of the high-low pressure winding of the second transformer is separate, and between the top and the bottom insulating end ring of high pressure winding and iron core, is provided with for regulating the fastening bolt of the height of high pressure winding;
Between the high pressure winding of the second transformer and low pressure winding, be provided with for making high pressure winding outwardly convex, the stay that low pressure winding caves inward;
The high pressure winding of the 3rd transformer, under the effect of axle pressure, forms warpage state.
Preferably, described the first transformer comprises 5 high pressure winding casing tubes;
Wherein, the terminals of the first high pressure winding casing tube are connected with the first circle coil of high pressure winding;
The terminals of the second high pressure winding casing tube are connected with the end of high pressure winding the 1274th circle coil;
Third high presses the terminals of rich group sleeve pipe to be connected with the end of high pressure winding the 1338th circle coil;
The terminals of the 4th high pressure winding casing tube are connected with the end of high pressure winding the 1402nd circle coil;
The terminals of the 5th high pressure winding casing tube are connected with the end of high pressure winding the 1466th circle coil.
Preferably, described high pressure winding casing tube is the condenser-type terminal that epoxide resin material is made.
Preferably, described the first transformer, the second transformer and described the 3rd transformer also comprise: the first low pressure winding casing tube and the second low pressure winding casing tube;
Described the first low pressure winding casing tube is connected with the head end of low pressure winding;
Described the second low pressure winding casing tube is connected with the end of low pressure winding.
Preferably, the high pressure winding of described the first transformer, described the first transformer and described the 3rd transformer is multi-layer drum-type.
Preferably, the low pressure winding of described the first transformer, described the second transformer and described the 3rd transformer is continous way.
Preferably, described the first transformer, described the second transformer and described the 3rd transformer comprise successively from low pressure winding to high pressure winding: high pressure winding, low pressure winding outer stay, the first screen, the first stay, the second screen, the second stay, fit-up gap, high pressure group insulating cylinder and high pressure winding.
Preferably, described the first transformer, described the second transformer and described the 3rd transformer include fuel tank.
Preferably, the top of described fuel tank and the bottom of sidewall are respectively arranged with and get hydraulic fluid port.
Preferably, described the first high pressure winding casing tube is positioned at the top of transformer;
Described the second high pressure winding casing tube, described third high press winding casing tube, described the 4th high pressure winding casing tube and described the 5th high pressure winding casing tube to be positioned at the side of transformer.
Known via above-mentioned technical scheme, compared with prior art, the utility model openly provides a kind of failure analog device of transformer, comprising: three transformers.Wherein, the first transformer comprises a plurality of high pressure winding casing tubes, and the terminals of a plurality of high pressure winding casing tubes connect respectively the diverse location of high pressure winding coil.By connection in series-parallel wire, inductance, resistance and electric capacity between a plurality of high pressure winding casing tubes of the first transformer, realize the simulation of transformer short-circuit and displacement fault like this.Between the top and the bottom insulated coil of the second transformer and iron core, be provided with for regulating the fastening bolt of the height of high pressure winding, and between high pressure winding and low pressure winding, be provided with for making high pressure winding outwardly convex, the stay that low pressure winding caves inward, thereby for simulating the displacement of high-low pressure axis of winding and bulge fault.The 3rd transformer is as the transformer of simulation winding warpage fault.As known from the above, three transformers are separate, can simulate the comparatively complicated fault such as short circuit, displacement, warpage and bulge of winding simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, other accompanying drawing can also be provided according to the accompanying drawing providing.
Fig. 1 is the external structure front elevation of three transformers in a kind of transformer winding fault analogue means of the utility model;
Fig. 2 is the external structure vertical view of three transformers in a kind of transformer winding fault analogue means of the utility model;
Fig. 3 is the structural representation of upper and lower insulating end ring in a kind of transformer winding fault analogue means of the utility model;
Fig. 4 is three transformer inner structure schematic diagram in a kind of transformer winding fault analogue means of the utility model;
Fig. 5 is transformer high-voltage winding and sleeve pipe pin configuration schematic diagram thereof in a kind of transformer winding fault analogue means of the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Referring to Fig. 1～Fig. 5, Fig. 1 is the external structure front elevation of three transformers in a kind of transformer winding fault analogue means of the utility model; Fig. 2 is the external structure vertical view of three transformers in a kind of transformer winding fault analogue means of the utility model; Fig. 3 is the structural representation of upper and lower insulating end ring in a kind of transformer winding fault analogue means of the utility model; Fig. 4 is three transformer inner structure schematic diagram in a kind of transformer winding fault analogue means of the utility model; Fig. 5 is transformer high-voltage winding and sleeve pipe pin configuration schematic diagram thereof in a kind of transformer winding fault analogue means of the utility model.
Transformer Winding described in the utility model becomes failure simulation device and comprises the first transformer, the second transformer and the 3rd transformer, three single-phase testing transformers.
Wherein, the first transformer by fuel tank 1, sleeve pipe 2-8 (sleeve pipe 2-8 comprises: 5 high pressure winding casing tubes and 2 low pressure winding casing tubes), get hydraulic fluid port 10-11, high pressure winding 12 and low pressure winding 13 and form, wherein fuel tank 1 is totally enclosed cube, inner encapsulated transformer oil, transformer nameplate 9 is positioned at fuel tank side, get hydraulic fluid port 11 on fuel tank 1 right side, top for one, another gets the bottom that hydraulic fluid port 10 is fixed on fuel tank 1 sidewall.
The head end leading-out terminal of the high pressure winding 12 of the first transformer is drawn by the first high pressure winding casing tube 2, is positioned at the top of the first transformer; The end leading-out terminal of high pressure winding 12 is positioned at the side of the first transformer, by other 4 high pressure winding casing tubes, is drawn.Wherein, the terminals of the second high pressure winding casing tube 3 are connected with the end of the 1274th circle coil of high pressure winding 12; Third high presses the end of the rich group terminals of sleeve pipe 6 and the 1338th circle coil of high pressure winding 12 to be connected; The terminals of the 4th high pressure winding casing tube 4 are connected with the end of the 1402nd circle coil of high pressure winding 12; The terminals of the 5th high pressure winding casing tube 5 are connected with the end of the 1466th circle coil of high pressure winding 12.
The head end of low pressure winding 13 and the leading-out terminal of end are positioned at the opposite side at the top of the first transformer, are drawn respectively by the first low pressure winding casing tube 8 and the second low pressure winding casing tube 7, and this two sleeve pipe 7,8 is mainly used in fixedly low pressure winding 13.
Optionally, low pressure winding 13 is continous way, and high pressure winding 12 is multi-layer cylinder formula, and above-mentioned sleeve pipe 2-8 is the condenser-type terminal that adopts epoxide resin material to be made.
It should be noted that, between the high pressure winding 12 of the first transformer and low pressure winding 13, main insulating structure is 53.5mm, by one thick low pressure winding 13 outer stay 14 of 10mm, twice 2mm thickness screen (the first screen 15 and the second screen 16), the thick stay of twice 18mm (the first stay 17 and the second stay 18), the fit-up gap 19 of the one thick high pressure winding of 2mm insulating cylinder 20 and 1.5mm forms.
Be understandable that, by connection in series-parallel wire, inductance, resistance and electric capacity between 5 high pressure winding casing tube 2-6 of the first transformer, can be used for simulation in various degree with short trouble and the displacement fault of diverse location.Such as identical by the fault degree of short circuit between wire short circuit and sleeve pipe 4 and sleeve pipe 5 between: sleeve pipe 3 and sleeve pipe 6, be all short circuit 64 circle windings, but its abort situation is not identical, as short circuit between sleeve pipe 3 and sleeve pipe 4, represent high pressure winding 12 internal short-circuit 128 circles, degree of short circuit is more serious than short circuit between sleeve pipe 3 and sleeve pipe 6.And during simulation displacement fault, as between sleeve pipe 3 and sleeve pipe 6, connect the electric capacity of different magnitudes, just can simulate easily the distortion fault of different degree of displacement.
The second transformer and the first transformer device structure are basic identical, difference is that the high pressure winding 12 of the second transformer and the upper portion insulating end circle of low pressure winding 13 21 and bottom insulating end ring 24 are separate, wherein between the upper portion insulating end circle 21 of high pressure winding 12, bottom insulating end ring 24 and unshakable in one's determination 23, use fastening bolt 22 and fastening bolt 28 to compress, by controlling fastening bolt 22 and 28, can control the relative position of high pressure winding 12 and low pressure winding 13, thereby realize the simulation of the radial displacement of winding.Further, after having assembled, the second transformer extracts near high pressure winding 12Na road 18mm stay 18, after former stay 18 position cushioning 2mm cardboards, squeeze into thick 25mm stay, thereby make high pressure winding 12 outwardly convexs, low pressure winding 13 caves inward, and realizes the bulge fault simulation of full winding.
After the coiling of the 3rd transformer high-voltage winding 12 completes, it is lifted one's head to scope place and axially apply certain pressure, make winding deformation form warpage, thereby realize the warpage simulation of winding.
Between three transformers disclosed in the utility model, be independent of each other, can't, because of having fault on the second transformer, just affect the test result of the first transformer.Fault is directly fixed on to transformer inside, can guarantees the feature of research deformation of transformer winding fault that can be quantitative under same test conditions, the inner structure that can not destroy winding simultaneously makes it have test repeatability.
Finally, also it should be noted that, in this article, relational terms such as the first and second grades is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply and between these entities or operation, have the relation of any this reality or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby the process, method, article or the equipment that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, article or equipment.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the application.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can be in the situation that do not depart from the application's spirit or scope, realization in other embodiments.Therefore, the application will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a failure analog device of transformer, comprising: three separate transformers, it is characterized in that, and the first transformer comprises a plurality of high pressure winding casing tubes, the terminals of described a plurality of high pressure winding casing tubes connect respectively the diverse location of high pressure winding coil;
The top and the bottom insulating end ring of the high-low pressure winding of the second transformer is separate, and between the top and the bottom insulating end ring of high pressure winding and iron core, is provided with for regulating the fastening bolt of the height of high pressure winding;
Between the high pressure winding of the second transformer and low pressure winding, be provided with for making high pressure winding outwardly convex, the stay that low pressure winding caves inward;
The high pressure winding of the 3rd transformer, under the effect of axle pressure, forms warpage state.
2. device according to claim 1, is characterized in that, described the first transformer comprises 5 high pressure winding casing tubes;
Wherein, the terminals of the first high pressure winding casing tube are connected with the first circle coil of high pressure winding;
The terminals of the second high pressure winding casing tube are connected with the end of high pressure winding the 1274th circle coil;
Third high presses the terminals of rich group sleeve pipe to be connected with the end of high pressure winding the 1338th circle coil;
The terminals of the 4th high pressure winding casing tube are connected with the end of high pressure winding the 1402nd circle coil;
The terminals of the 5th high pressure winding casing tube are connected with the end of high pressure winding the 1466th circle coil.
3. device according to claim 1, is characterized in that, described high pressure winding casing tube is the condenser-type terminal that epoxide resin material is made.
4. according to the device described in claim 1,2 or 3, it is characterized in that, described the first transformer, the second transformer and described the 3rd transformer also comprise: the first low pressure winding casing tube and the second low pressure winding casing tube;
Described the first low pressure winding casing tube is connected with the head end of low pressure winding;
Described the second low pressure winding casing tube is connected with the end of low pressure winding.
5. device according to claim 1, is characterized in that, the high pressure winding of described the first transformer, described the first transformer and described the 3rd transformer is multi-layer drum-type.
6. device according to claim 1, is characterized in that, the low pressure winding of described the first transformer, described the second transformer and described the 3rd transformer is continous way.
7. device according to claim 1, it is characterized in that, described the first transformer, described the second transformer and described the 3rd transformer comprise successively from low pressure winding to high pressure winding: high pressure winding, low pressure winding outer stay, the first screen, the first stay, the second screen, the second stay, fit-up gap, high pressure group insulating cylinder and high pressure winding.
8. device according to claim 1, is characterized in that, described the first transformer, described the second transformer and described the 3rd transformer include fuel tank.
9. device according to claim 8, is characterized in that, the top of described fuel tank and the bottom of sidewall are respectively arranged with gets hydraulic fluid port.
10. device according to claim 2, is characterized in that, described the first high pressure winding casing tube is positioned at the top of transformer;
Described the second high pressure winding casing tube, described third high press winding casing tube, described the 4th high pressure winding casing tube and described the 5th high pressure winding casing tube to be positioned at the side of transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420164658.1U CN204028238U (en) | 2014-04-04 | 2014-04-04 | A kind of failure analog device of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420164658.1U CN204028238U (en) | 2014-04-04 | 2014-04-04 | A kind of failure analog device of transformer |
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| Publication Number | Publication Date |
|---|---|
| CN204028238U true CN204028238U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420164658.1U Expired - Fee Related CN204028238U (en) | 2014-04-04 | 2014-04-04 | A kind of failure analog device of transformer |
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| Country | Link |
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| CN (1) | CN204028238U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884946A (en) * | 2014-04-04 | 2014-06-25 | 国家电网公司 | Transformer fault simulating device |
| CN104407267A (en) * | 2014-11-26 | 2015-03-11 | 中国船舶重工集团公司第七一二研究所 | Transformer fault detection method |
-
2014
- 2014-04-04 CN CN201420164658.1U patent/CN204028238U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884946A (en) * | 2014-04-04 | 2014-06-25 | 国家电网公司 | Transformer fault simulating device |
| CN104407267A (en) * | 2014-11-26 | 2015-03-11 | 中国船舶重工集团公司第七一二研究所 | Transformer fault detection method |
| CN104407267B (en) * | 2014-11-26 | 2017-10-20 | 中国船舶重工集团公司第七一二研究所 | A kind of transformer fault detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 |