CN105526835B - A kind of transformer winding radial deformation analogue test platform - Google Patents
A kind of transformer winding radial deformation analogue test platform Download PDFInfo
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- CN105526835B CN105526835B CN201510643965.7A CN201510643965A CN105526835B CN 105526835 B CN105526835 B CN 105526835B CN 201510643965 A CN201510643965 A CN 201510643965A CN 105526835 B CN105526835 B CN 105526835B
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- 238000004804 winding Methods 0.000 title claims abstract description 115
- 238000012360 testing method Methods 0.000 title claims abstract description 18
- 239000002828 fuel tank Substances 0.000 claims abstract description 49
- 238000011160 research Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 6
- 238000004088 simulation Methods 0.000 abstract description 6
- 239000003990 capacitor Substances 0.000 abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 11
- 230000004044 response Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000002405 diagnostic procedure Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000004807 localization Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 229910000737 Duralumin Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention belongs to a kind of deformation test of transformer winding research platform, especially with regard to the physical analogy platform of oil-immersed power transformer winding radial deformation.Existing laboratory winding deformation test platform, it is by being handled transformer winding to simulate live winding deformation, and oil tank of transformer and iron core remain unchanged, the processing such as simple shift, access capacitor, short-circuited turn are carried out to winding, it is underaction, accurate, it is difficult to facilitate the deformation of variously-shaped simulation, position, scope, and when replacing deformation position, capacitor when operations, winding need to be taken out from fuel tank, it is very troublesome.The present invention is changed by the way that distribution capacity variation caused by winding radial deformation is converted into distribution capacity caused by fuel tank deforms, change the position of deformation block (6), the position for changing winding deformation or the scope and deformation extent that change winding deformation are equivalent to, has easily achieved the effect that simulate winding radial deformation.
Description
Technical field
The invention belongs to a kind of deformation test of transformer winding research platform, especially with regard to oil-immersed power transformer around
The physical analogy platform of group radial deformation.
Background technology
Deformation of transformer winding refers to that under the action of electric power and mechanical force size or the shape generation of winding are irreversible
Variation.It includes the variation of axially and radially size, device body displacement, winding distortion, bulge and turn-to-turn short circuit etc..In addition, around
Group deformation also has cumulative effect, i.e.,：After first short circuit rush of current is subjected to, transformer winding is not damaged immediately, only
Smaller permanent deformation, but its insulation performance and mechanical performance is caused to decline.In short-circuit current rush next time, can cause around
, there is vicious circle in group deformation aggravation.The transformer for thus having winding deformation is a kind of accident potential, if being run into again during operation
Larger overcurrent effect, then may occur the major accidents such as transformer damage.Transformer phase winding deformation failure at present,
One of major failure as transformer, therefore, it is necessary to deformation detection is carried out to transformer winding and diagnoses its deformation extent, according to
This carries out the preventative maintenance of transformer.
For this reason, it may be necessary to study and define the feasible detection method of science to realize the detection of deformation of transformer winding, in the world
Many countries all to having put into substantial amounts of energy in the research work of deformation of transformer winding detection method, according to transformer whether
It stops transport, point on-line monitoring and offline inspection.Wherein, most common winding deformation detection method is method of frequency response method.Transformer winding is sent out
After the shape that changes, the parameters such as inductance, direct-to-ground capacitance, turn-to-turn capacitance of winding can change.The operation principle of method of frequency response method is exactly
By the frequency response curve of winding, reflect the variation of the distributed inductance and distribution capacity of winding, and then judge whether winding becomes
Shape.
Current winding deformation detection method, there are diagnostic method it is incomplete the problem of, it is necessary to further investigate detection
The localization method of sensitivity, accuracy and definite deformation position with diagnostic method.Development the studies above be unable to do without experiment and tests
Card.
The platform used in traditional winding deformation detection experimental study, a kind of hair for being derived from transformer factory and reprocessing
The transformer of winding deformation is given birth to, a kind of is the test platform in laboratory.Existing laboratory winding deformation test platform,
It is by being handled transformer winding to simulate live winding deformation, and oil tank of transformer and iron core remain unchanged.Place
Reason method include by two circle coil short of certain in winding, between certain two circle coil access capacitor, increase line cake between distance,
Mobile winding is to change winding to distance of fuel tank etc., so that the distributed inductance of winding, capacitance change, Jin Erda
To the purpose of simulation winding practical distortion.
The principal mode of the radial deformation of transformer winding is bulge and recess, and specific deformed shape is changeable, deformation position
It is not fixed with range size.The processing such as simple shift, access capacitor, short-circuited turn, underaction, standard are carried out to winding
Really, it is difficult to facilitate the deformation of variously-shaped simulation, position, scope, and carry out the operations such as replacement deformation position, capacitor
When, it is necessary to winding is taken out from fuel tank, it is very troublesome, so as to greatly constrain the effect of winding deformation detection method experimental study
Rate and effect limit the development and raising of winding deformation detection technique.
The content of the invention
In view of this, the present invention provides a kind of transformer winding radial deformation analogue test platform, can be conveniently and efficiently
Simulate variously-shaped, position, the winding radial deformation of scope.The platform is by winding (1), fuel tank (2), right casing (3), left casing
(4), push rod (5), deformation block (6), dynamic sealing mechanism (7) composition.
Winding (1) is placed on fuel tank (2) inside, and the high-voltage connection of winding (1) is drawn fuel tank by right casing (3)
(2), the neutral point lead of winding (1) is drawn by fuel tank (2) by left casing (4).
Deformation block (6) is mounted on the end of push rod (5)；Push rod (5) is mounted on by dynamic sealing mechanism (7) in fuel tank (2)
On side wall or on fuel tank (2) head cover；Push rod (5) can stretch, so as to drive deformation block (6) in winding (1) and fuel tank
(2) moved in the gap between, and then change the relative position between deformation block (6) and winding (1)；
Material, the structure of winding (1) are identical with the winding of oil-immersed power transformer；The material and oil immersed type of fuel tank (2)
The fuel tank of power transformer is identical；The material of push rod (5) is metallic conductor；The material of deformation block (6) and oil-immersed type power transformation
The fuel tank of device is identical.
Deformation block (6) is electrically connected by push rod (5) and fuel tank (2).
The shapes and sizes of deformation block (6) make according to the winding deformation shape and scope that will be simulated, so as to intend
The winding (1) of research to the distribution capacity of fuel tank (2) due to winding (1) deforms and lead to the problem of variation it is equivalent into due to
Deformation block (6) there are problems that and change.
Compared with prior art, the beneficial effects of the present invention are：1st, for current most common method of frequency response method, transformer around
Group radial deformation is mainly shown as variation of the winding to the distribution capacity of fuel tank, is embodied in the change of intermediate frequency, high band frequency response curve
Change.The present invention is become by the way that distribution capacity variation caused by winding radial deformation is converted into distribution capacity caused by fuel tank deforms
Change, easily achieved the effect that very much to simulate winding deformation.Since deformation block (6) and fuel tank (2) are electrically connected, fuel tank deformation
Concrete shape, scope and position can be realized by the shape size and position of deformation block (6).The position of deformation block (6)
Putting variation can easily be changed by push rod (5).Deformation block (6) can also be processed according to the shape of various modifications
And replacement.
2nd, it is existing based on the winding deformation test platform handled winding, when changing deformation, it is necessary to will
Winding is hung out from fuel tank, completes to put back to fuel tank again after the processing to winding.Due to winding and fuel tank it is heavier, it is necessary to
Employ lifting equipment；Transformer oil in fuel tank, which needs first to recycle, to be re-filled with, and process is also troublesome.And simulation proposed by the present invention
Test platform changes the position of deformation block (6) by push rod (5), is equivalent to the position for changing winding deformation or changes
The scope and deformation extent of winding deformation.Push rod (5) is fixed on by dynamic sealing mechanism (7) on fuel tank (2), ensure that fuel tank
(2) sealing, and then realize the change of deformation position, deformation extent being not required to open under conditions of fuel tank takes out winding.
Therefore, analogue test platform proposed by the invention, can it is very convenient, analogue transformer winding is various exactly
Possible radial deformation provides a kind of very convenient, accurate, fine experimental study and puts down for the research of winding deformation detection method
Platform is very beneficial for carrying out the sensitivity of winding deformation detection method, accuracy and the research of deformation position localization method.
Description of the drawings
Fig. 1 is a kind of principle of equal effects schematic diagram of transformer winding radial deformation analogue test platform.
Fig. 2 is a kind of structure diagram of transformer winding radial deformation analogue test platform.
Specific embodiment
The present invention is described in detail below with reference to the accompanying drawings and embodiments.
Such as Fig. 2, a kind of analogue test platform of deformation of transformer winding, by a real power transformer 110kV around
Group (1), oil tank of transformer (2), 110kV bushings (3), 10kV low-tension bushings (4), duralumin push rod (5), irony deformation block
(6) formed with dynamic sealing mechanism (7).The wherein height 1080mm of winding, overall diameter 1150mm；Fuel tank (2) be square box, material
Matter is iron.Minimum clearance is 240mm between winding (1) and fuel tank (2)；Dynamic sealing mechanism (7) includes oil tank wall perforation flange and O
Type rubber seal can ensure that push rod (5) is easily controlled to stretch into or exit.Winding (1) is placed on fuel tank (2) inside, and
The high-voltage connection of winding (1) is drawn by fuel tank (2) by casing (3), is drawn the neutral point lead of winding (1) by casing (4)
Go out fuel tank (2).Deformation block (6) is mounted on the end of push rod (5)；Push rod (5) is mounted on fuel tank (2) by dynamic sealing mechanism (7)
On madial wall or on fuel tank (2) head cover；Push rod (5) can stretch, so as to drive deformation block (6) in winding (1) and oil
It is moved in gap between case (2), and then changes the relative position between deformation block (6) and winding (1)；Deformation block (6) passes through
Push rod (5) is electrically connected with fuel tank (2).
The shapes and sizes of deformation block (6) make according to the winding deformation shape and scope that will be simulated, so that
Intend the winding (1) of research to the distribution capacity of fuel tank (2) due to winding (1) deforms and lead to the problem of variation change by
There are problems that and change in deformation block (6)；The shape of deformation block (6) takes fillet, makes it in winding ceiling voltage
Partial discharge phenomenon will not occur during in 63kV；When winding is in electriferous state, the distance between deformation block (6) and winding
Meet electric insulation requirement.
The embodiment can be used for carrying out winding radial deformation detection to 110kV oil-immersed transformers in laboratory
Off-line simulation is tested, i.e. the lead-out wire of casing (4) ground connection, the lead-out wire of casing (3) be connecteds with high-voltage conducting wires, and winding
Deformation detection instrument is connected；It can be used for carrying out winding radial deformation detection to 110kV oil-immersed transformers in laboratory
Online simulation is tested, i.e. the lead-out wire ground connection of casing (4), the lead-out wire of casing (3) are connected with high-voltage conducting wires, do not become with winding
Shape detecting instrument is connected.
The use step of the present embodiment is as follows：
Step 1：According to deformation of transformer winding offline inspection or live monitoring method, by winding deformation detecting instrument
Lead is connected to the corresponding connecting portion in the embodiment；
Step 2：Deformation block (6) is moved to winding overhang, and close proximity to fuel tank, i.e. make deformation block (6) to winding
The influence of stray capacitance is minimum over the ground；
Step 3：The frequency response curve of winding is measured, as reference curve of winding when not deformed；
Step 4：Movement and deformation block (6) is to the position for intending deformation, close to winding, so as to increase the portion using deformation block (6)
The direct-to-ground capacitance of position winding；
Step 5：The frequency response curve of winding is measured, measured curve during as winding deformation；
Step 6：Measured curve and reference curve are compared, the difference between curve is asked for, studies the difference and deformation block (6)
Position between correspondence.
Finally it should be noted that：The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, to the greatest extent
Pipe is described in detail the present invention with reference to above-described embodiment, those of ordinary skills in the art should understand that：Still
The specific embodiment of the present invention can be modified or replaced equivalently, and without departing from any of spirit and scope of the invention
Modification or equivalent substitution, should be covered by the scope of the claims of the present invention.
Claims (3)
1. a kind of transformer winding radial deformation analogue test platform, it is characterized in that, the platform is by winding (1), fuel tank (2), the right side
Casing (3), left casing (4), push rod (5), deformation block (6), dynamic sealing mechanism (7) composition；Winding (1) is placed in fuel tank (2)
Portion, and the high-voltage connection of winding (1) drawn by fuel tank (2) by right casing (3), will be in winding (1) by left casing (4)
Property point lead draw fuel tank (2)；Deformation block (6) is mounted on the end of push rod (5)；Push rod (5) is installed by dynamic sealing mechanism (7)
On fuel tank (2) madial wall or on fuel tank (2) head cover；Push rod (5) can stretch, so as to drive deformation block (6) around
It is moved in gap between group (1) and fuel tank (2), and then changes the relative position between deformation block (6) and winding (1)；Deformation
Block (6) is electrically connected by push rod (5) and fuel tank (2).
2. a kind of transformer winding radial deformation analogue test platform according to claim 1, it is characterized in that, winding (1)
Material, structure it is identical with the winding of oil-immersed power transformer；The material of fuel tank (2) and the fuel tank of oil-immersed power transformer
It is identical；The material of push rod (5) is metallic conductor；The material of deformation block (6) is identical with the fuel tank of oil-immersed power transformer.
3. a kind of transformer winding radial deformation analogue test platform according to claim 1, it is characterized in that, deformation block
(6) shapes and sizes make according to the winding deformation shape and scope that will be simulated, right so as to intend the winding (1) of research
The distribution capacity of fuel tank (2) is since winding (1) deforms and leads to the problem of the equivalent presence into due to deformation block (6) of variation
And the problem of changing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510643965.7A CN105526835B (en) | 2015-10-08 | 2015-10-08 | A kind of transformer winding radial deformation analogue test platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510643965.7A CN105526835B (en) | 2015-10-08 | 2015-10-08 | A kind of transformer winding radial deformation analogue test platform |
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| Publication Number | Publication Date |
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| CN105526835A CN105526835A (en) | 2016-04-27 |
| CN105526835B true CN105526835B (en) | 2018-05-18 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093669A (en) * | 2016-08-24 | 2016-11-09 | 山东鲁能泰山电力设备有限公司 | The experimental provision of a kind of analogue transformer short circuit and method |
| CN106707064B (en) * | 2016-12-31 | 2018-05-08 | 西南交通大学 | Winding radial pressure and frequency response relevance research platform and its experimental method |
| CN106771621B (en) * | 2016-12-31 | 2018-05-08 | 西南交通大学 | A kind of adjustable transformer winding testing impedance platform of radial pressure |
| CN106816291B (en) * | 2017-04-13 | 2018-06-29 | 云南电网有限责任公司电力科学研究院 | A kind of distribution transformer for simulating winding short circuit state |
| CN110161352B (en) * | 2019-04-29 | 2021-05-11 | 云南电网有限责任公司电力科学研究院 | Frequency response test device and method under condition of simulating turn-to-turn short circuit of transformer winding |
| CN110376453A (en) * | 2019-06-23 | 2019-10-25 | 西南交通大学 | A kind of transformer winding radial deformation fault simulation platform and application method |
| CN110376454B (en) * | 2019-06-23 | 2024-04-26 | 西南交通大学 | Research platform for relevance of radial deformation of winding and oscillatory wave and test method thereof |
| CN113092269B (en) * | 2021-04-01 | 2024-03-12 | 浙江方圆电气设备检测有限公司 | Pressure deformation testing method for liquid immersion type transformer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735969A (en) * | 2012-06-13 | 2012-10-17 | 江苏省电力公司南京供电公司 | Power transformer winding fault simulation test method |
| CN102881429A (en) * | 2012-09-24 | 2013-01-16 | 深圳供电局有限公司 | Test transformer |
| CN202887569U (en) * | 2012-11-15 | 2013-04-17 | 浙江省电力公司电力科学研究院 | Transformation simulation device of transformer winding |
| CN103592546A (en) * | 2013-11-21 | 2014-02-19 | 杭州西湖电子研究所 | Method for simulating faults of power transformer |
| CN204347165U (en) * | 2015-01-15 | 2015-05-20 | 国网四川省电力公司电力科学研究院 | Deformation of transformer winding failure simulation device |
| CN204595118U (en) * | 2015-04-28 | 2015-08-26 | 深圳供电局有限公司 | Testing device with power transformer fault simulation function |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6369582B2 (en) * | 2000-05-04 | 2002-04-09 | Georgia Tech Research Corporation | System and method for off-line impulse frequency response analysis test |
| TWI391685B (en) * | 2009-10-16 | 2013-04-01 | Ind Tech Res Inst | Station for detecting winding products and method for detecting inter-turn short-circuit |
-
2015
- 2015-10-08 CN CN201510643965.7A patent/CN105526835B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735969A (en) * | 2012-06-13 | 2012-10-17 | 江苏省电力公司南京供电公司 | Power transformer winding fault simulation test method |
| CN102881429A (en) * | 2012-09-24 | 2013-01-16 | 深圳供电局有限公司 | Test transformer |
| CN202887569U (en) * | 2012-11-15 | 2013-04-17 | 浙江省电力公司电力科学研究院 | Transformation simulation device of transformer winding |
| CN103592546A (en) * | 2013-11-21 | 2014-02-19 | 杭州西湖电子研究所 | Method for simulating faults of power transformer |
| CN204347165U (en) * | 2015-01-15 | 2015-05-20 | 国网四川省电力公司电力科学研究院 | Deformation of transformer winding failure simulation device |
| CN204595118U (en) * | 2015-04-28 | 2015-08-26 | 深圳供电局有限公司 | Testing device with power transformer fault simulation function |
Non-Patent Citations (1)
| Title |
|---|
| 变压器绕组模拟变形的对比研究;孙强 等;《变压器》;20021031;第39卷(第10期);第20-24页 * |
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