CN106707064B - Winding radial pressure and frequency response relevance research platform and its experimental method - Google Patents
Winding radial pressure and frequency response relevance research platform and its experimental method Download PDFInfo
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- CN106707064B CN106707064B CN201611267949.3A CN201611267949A CN106707064B CN 106707064 B CN106707064 B CN 106707064B CN 201611267949 A CN201611267949 A CN 201611267949A CN 106707064 B CN106707064 B CN 106707064B
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- winding
- radial direction
- pressure
- test instrument
- frequency response
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a kind of winding radial pressure and frequency response relevance research platform and its experimental method.Research platform is made of winding support device, winding, casing, babinet, frequency sound test instrument, winding 6 is external by 10 outlet box of casing, and be electrically connected with frequency sound test instrument 13, computer 14 controls frequency sound test instrument 13 to complete the winding frequency response measurement under current pressure；The reducing inner supporting body is placed in 8 on the fixed station in babinet 9；The winding 6 of the cake formula cyclic structure formed is stacked by line cake on reducing inner supporting body, connect between line cake, 6 first and last end of winding picks out babinet 9 by casing 10, pressure sensor is placed between winding and support cambered surface, control bar shaped gear rotation can move radially supporting rod, and the pressure signal on pressure sensor is shown by display module.The present invention can effectively under simulation difference radial pressure the frequency response of winding change, can be used as research using and provide reference for engineering is actual.
Description
Technical field
The invention belongs to transformer fault simulation technical field, and in particular to winding radial pressure and frequency response relevance
Research platform and test method.
Background technology
Transformer is closed as one of core equipment in electric system and tractive power supply system, its stability and reliability
It is the normal operation to whole system, short trouble is the most commonly seen failure of transformer, when short trouble occurs for transformer,
Winding can produce very big electromagnetic force under the action of short circuit current flow and internal magnetic field, winding can be caused to produce mechanically deform, most
Transformer is destroyed eventually.
Transformer winding can regard Passive Two-Port Network as, it can be characterized with distributed inductance, resistance, capacitance, when this
When a little parameters change, the frequency response at winding first and last end will produce change, and short-circuit impact will not damage immediately
Property failure, it may occur that micro-strain, and it is this deformation have cumulative effect, this can gradually cause winding equivalent inductance, resistance, electricity
Hold change, therefore deformation of transformer winding degree can be detected by measuring winding frequency response change degree in on-the-spot test.
At present, winding frequency response is studied, it usually needs mechanically deform is caused to winding, this method can not study winding and exist
Deformation early stage, that is, occur the variation tendency of winding frequency response during micro-strain, and its quantitative relationship between radial force.
The content of the invention
The present invention is in view of the deficienciess of the prior art, propose winding radial pressure and frequency response relevance research platform
With test method, to probe into the situation of change of transformer winding impedance when bearing different radial loads, its with it is easy to operate,
The features such as high sensitivity, can effectively study the variation relation of radial load and winding frequency response curve, so as to be actual work
Journey provides reference.
The technical solution that the present invention uses is：
Winding radial pressure and frequency response relevance research platform, mainly by babinet 9, the fixed station being placed in babinet 98
On reducing inner supporting body, winding 6, casing 10, babinet 9, frequency sound test instrument 13, computer 14 and propped up in reducing
Winding 6 on support body forms；Winding 6 is external by 10 outlet box of casing, and is electrically connected with frequency sound test instrument 13, computer 14
Frequency sound test instrument 13 is controlled to complete the winding frequency response measurement under current pressure；The reducing inner supporting body is placed in babinet 9
8 on fixed station；The winding 6 of the cake formula cyclic structure formed is stacked by line cake on reducing inner supporting body, between line cake
Series connection, 6 first and last end of winding picks out babinet 9 by casing 10.
The support tube 3 of the tubular of reducing inner supporting body is stood on fixed station 8, and support tube 3, which vertically has, is distributed in difference
The radial direction support rod mechanism of horizontal plane, each radial direction support rod mechanism are made of two strut groups of the vertical distribution in Different Plane；Each support
For bar group with two radial direction struts with opposite rack segments, one end of radial direction strut is rack segments, its other end and supporting arc
Face 4 couples；Support cambered surface 4 is made of the cylindrical drum side wall of four quadrants, the cylindrical drum of four quadrants
Termination of the side wall respectively with four radial direction struts of the radial direction support rod mechanism in same level face couples；Top has the bar shaped of capstan 11
Gear 1 is placed on the center of fixed station 8, and bar shaped gear 1 passes through each radial direction support rod mechanism, is nibbled with the rack segments of each radial direction strut
Close, turn capstan 11 makes bar shaped gear 1 drive each radial direction strut to make radial motion through support tube 3, changes the footpath of support cambered surface
To position；
Support cambered surface 4 uses aluminium sheet to simulate the high frequency capacitance effect of iron core, supports and sets ring between cambered surface 4 and winding 6
Oxygen tree fat material simulation insulating layer 5, is placed with pressure sensor 15 between winding 6 and epoxide resin material analog insulation layer 5, pressure
Force snesor 15 is connected with display module 12.
Bar shaped gear 1 uses steel material with radial direction strut (211,212,221,222), its end is provided with gear, footpath
It is placed in strut (211,212,221,222) on support tube 3, support tube 3 is cylindrical shape, and inside is made of several supporting surfaces,
Fixing groove is provided with supporting surface, radial direction strut (211,212) staggers embedded in two supporting surfaces up and down with radial direction strut (221,222)
Fixing groove in.
The support cambered surface 4 uses aluminium sheet, simulates the high frequency capacitance effect of iron core, each to support 4 size of cambered surface as 1/4
Circular arc, it is each to support cambered surface 4 to be connected with a radial direction strut (211,212,221,222).Epoxide resin material analog insulation layer)
Structure to support cambered surface 4 it is similar, be also made of the cylindrical drum side wall of four quadrants.
Capstan of the invention by rotating top, applies stress, bar shaped gear is driven on support tube to bar shaped gear
Several radial direction struts move radially, and apply radial pressure in face of winding by the supporting arc being connected with radial direction strut, and pass through
Pressure sensor in support cambered surface show that the size of suffered radial pressure, and exterior frequency sound test instrument draw different radial directions
Winding impedance size under pressure.
The present invention also aims to provide a kind of winding radial pressure and frequency response relevance for the studies above platform
Test method, includes the following steps：
1) winding 6 is connected by casing 10 with frequency sound test instrument 13, and frequency sound test instrument 13 is connected with computer 14；
2) rotating capstan 11 drives radial direction strut to move radially, and makes 6 radial force of winding, is read and pressed by display module 12
Power size；
3) capstan 11 is fixed, controls frequency sound test instrument 13 to carry out the winding frequency response under current pressure by computer 14 and surveys
Amount；
4) repeat step 1 and 2, statistics obtains ringing curve around class frequency under different pressures, and calculates related coefficient progress
Analysis.
Winding frequency response that can be under analogue measurement difference radial pressure based on platform of the present invention and test method.
Brief description of the drawings
Fig. 1 is the general structure schematic diagram of the embodiment of the present invention；
Fig. 2 is the bar shaped gear and radial direction strut and support tube graph of a relation of the embodiment of the present invention；
Fig. 3 is the reducing inner supporting body top view of the embodiment of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail：
As shown in Figure 1, winding radial pressure and frequency response relevance research platform and test method, mainly include：Can
Reducing inner supporting body, winding 6, casing 10, babinet 9, frequency sound test instrument 13, computer 14.Branch in reducing is placed with babinet 9
Support body, winding 6 are placed in 8 on fixed station on reducing inner supporting body, and winding 6 is pie winding, is connected between line cake
And supported by cushion block 7,6 first and last end of winding picks out babinet 8 by casing 9；Reducing inner supporting body is that a kind of radial pressure can
The device of tune, is made of, footpath capstan 11, bar shaped gear 1, several radial direction struts (211,212,221,222) and support cambered surface 4
Acted on to strut (211,212,221,222) end by gear and bar shaped gear 1；Radial direction strut (211,212,221,222)
It is connected with support cambered surface 4, winding 6 is on winding epoxide resin material analog insulation layer 5, winding 6 and epoxide resin material
Pressure sensor 15 is placed between analog insulation layer 5, controls the rotation of bar shaped gear 1 to make radial direction strut by capstan 11
(211,212,221,222) move radially, and the pressure signal on pressure sensor 15 is shown by display module 12.
Fig. 2 is bar shaped gear and radial direction strut and support tube graph of a relation, the bar shaped gear 1 and radial direction strut (211,
212nd, 221 steel material 222), is used, its end is provided with gear, and radial direction strut (211,212,221,222) is placed in support tube
On 3, support tube 3 is cylindrical shape, and inside is made of several supporting surfaces, is provided with fixing groove on supporting surface, radial direction strut (211,
212) with radial direction strut (221,222) up and down stagger in the fixing groove of two supporting surfaces, radial direction strut (211,212,221,
222) it can coordinate with bar shaped gear 1 and be moved radially on support tube 3.
Fig. 3 is reducing inner supporting body top view, and the connection of radial direction strut (211,212,221,222) other end supports cambered surface
4, the support cambered surface 4 uses aluminium sheet, simulates the high frequency capacitance effect of iron core, and each support 4 size of cambered surface is 1/4 circular arc,
Each support cambered surface 4 is connected with a radial direction strut (211,212,221,222), and bar shaped gear is controlled by the capstan 11 of top
Rotation, when applying stress to capstan 11, bar shaped gear 1 drive on support tube 3 several radial direction struts (211,212,221,
222) move radially, radially pressed by applying with the support cambered surface 4 that radial direction strut (211,212,221,222) is connected to winding 6
Power, and by supporting the pressure sensor 15 in cambered surface 4 to draw the size of different radial direction pressures on display module, pass through
Computer 14 controls the frequency sound test instrument 13 of outside to measure the winding frequency response drawn under different radial pressures.
In the use of the present invention, key step is as follows：
1) winding 6 is connected by casing 10 with frequency sound test instrument 13, and frequency sound test instrument 13 is connected with computer 14；
2) rotating capstan 11 drives radial direction strut (211,212,221,222) to move radially, and makes 6 radial force of winding, leads to
Cross display module 12 and read pressure size；
3) capstan 11 is fixed, controls frequency sound test instrument 13 to carry out the winding frequency response under current pressure by computer 14 and surveys
Amount；
4) repeat step 1 and 2, statistics draw winding average force size with it is corresponding in the case of winding frequency response song
Line, and calculated curve related coefficient is compared.
Claims (2)
1. winding radial pressure and frequency response relevance research platform, it is characterised in that mainly by babinet (9), be placed in babinet
(9) the reducing inner supporting body on fixed station (8), casing (10) in, frequency sound test instrument (13), computer (14), wound on
Winding (6) composition on reducing inner supporting body；Winding (6) by casing (10) draw babinet (9) outside, and with frequency sound test instrument
(13) it is electrically connected, computer (14) control frequency sound test instrument (13) completes the winding frequency response measurement under current pressure；It is described can
Reducing inner supporting body is placed on the fixed station in babinet (9) (8)；The winding (6) of the cake formula cyclic structure formed is stacked by line cake
On reducing inner supporting body, connect between line cake, and supported by cushion block (7), winding (6) first and last end passes through casing
(10) babinet (9) is picked out；
The support tube (3) of the tubular of the reducing inner supporting body is stood on fixed station (8), and support tube (3) vertically has distribution
In the radial direction support rod mechanism of different level, each radial direction support rod mechanism by vertical distribution Different Plane two strut group structures
Into；For each strut group with two radial direction struts with opposite rack segments, one end of radial direction strut is rack segments, its other end with
Support cambered surface (4) connection；Support cambered surface (4) is made of the cylindrical drum side wall of four quadrants, four quadrants
Termination of the cylindrical drum side wall in week respectively with four radial direction struts of the radial direction support rod mechanism in same level face couples；Top has rotation
The bar shaped gear (1) of disk (11) is placed on the center of fixed station (8), and bar shaped gear (1) passes through each radial direction support rod mechanism, with each footpath
Engaged to the rack segments of strut, turn capstan (11) makes bar shaped gear (1) drive each radial direction strut to make radially through support tube (3)
Movement, changes the radial position of support cambered surface；
Support cambered surface (4) uses aluminium sheet to simulate the high frequency capacitance effect of iron core, is set between support cambered surface (4) and winding (6)
Epoxide resin material analog insulation layer (5), is placed with pressure biography between winding (6) and epoxide resin material analog insulation layer (5)
Sensor (15), pressure sensor (15) are connected with display module (12).
2. using the winding radial pressure and frequency response relevance test method of research platform described in claim 1, including such as
Lower step：
1) winding (6) is connected by casing (10) with frequency sound test instrument (13), and frequency sound test instrument (13) is connected with computer (14)；
2) rotating capstan (11) drives radial direction strut to move radially, and makes winding (6) radial force, is read by display module (12)
Pressure size；
3) capstan (11) is fixed, controls frequency sound test instrument (13) to carry out the winding frequency response under current pressure by computer (14)
Measurement；
4) repeat step 1 and 2, statistics obtains ringing curve around class frequency under different pressures, and calculates related coefficient and analyzed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611267949.3A CN106707064B (en) | 2016-12-31 | 2016-12-31 | Winding radial pressure and frequency response relevance research platform and its experimental method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611267949.3A CN106707064B (en) | 2016-12-31 | 2016-12-31 | Winding radial pressure and frequency response relevance research platform and its experimental method |
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| Publication Number | Publication Date |
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| CN106707064A CN106707064A (en) | 2017-05-24 |
| CN106707064B true CN106707064B (en) | 2018-05-08 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112922621B (en) * | 2021-03-09 | 2022-03-11 | 山东大学 | Diameter-variable shield tunneling machine cutter head and use method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6466034B1 (en) * | 2001-05-29 | 2002-10-15 | Powertech Labs Inc. | Transformer winding movement detection by high frequency internal response analysis |
| JP3603847B2 (en) * | 2001-12-28 | 2004-12-22 | Ｊｆｅスチール株式会社 | Tension applying device for magnetic measurement |
| CN101701995B (en) * | 2009-11-12 | 2011-11-16 | 重庆大学 | Impulse response analytical test apparatus and method for detecting deformation of transformer winding |
| KR101040591B1 (en) * | 2009-11-16 | 2011-06-10 | 한국전기연구원 | Connection unit for diagnosis of transformer |
| CN104269269A (en) * | 2014-10-22 | 2015-01-07 | 成都众山科技有限公司 | Insulating layer assembly device |
| CN105526835B (en) * | 2015-10-08 | 2018-05-18 | 华北电力大学 | A kind of transformer winding radial deformation analogue test platform |
| CN106199262B (en) * | 2016-07-04 | 2019-01-29 | 河南平高通用电气有限公司 | Coil pressure test device |
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