CN207622682U - A kind of check device of winding deformation tester - Google Patents
A kind of check device of winding deformation tester Download PDFInfo
- Publication number
- CN207622682U CN207622682U CN201721574059.7U CN201721574059U CN207622682U CN 207622682 U CN207622682 U CN 207622682U CN 201721574059 U CN201721574059 U CN 201721574059U CN 207622682 U CN207622682 U CN 207622682U
- Authority
- CN
- China
- Prior art keywords
- branch
- analogue unit
- connect
- head end
- winding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 238000004804 winding Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000003990 capacitor Substances 0.000 claims description 35
- 238000004088 simulation Methods 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 20
- 238000012360 testing method Methods 0.000 abstract description 17
- 230000008901 benefit Effects 0.000 abstract description 8
- 238000007689 inspection Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 4
- 239000000470 constituent Substances 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 238000003745 diagnosis Methods 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model discloses a kind of check devices of winding deformation tester, it is related to power measurement technical field, for the means for lacking instrumental function inspection when using a variety of method of frequency response method winding deformation testers, the problem of can not excluding instrument self-defect reason in use and influencing to judge test result, using multiple analogue unit constituent apparatus, analogue unit includes the first branch for simulating axis of winding distribution capacity, for simulating the second branch of inductance and ground capacity branch between winding inter-turn or cake, first branch head end connect with the second branch head end and as the input terminal of the analogue unit, first branch tail end connect with the second branch tail end and as the output end of the analogue unit, first branch head end is connect by ground capacity branch with ground wire with the second branch head end；The utility model is capable of the distributed constant of relatively accurately analogue transformer winding, has the advantages of simple structure and easy realization, it is only necessary to which simple wiring can be tested.
Description
Technical field
The utility model is related to power measurement technical field, more particularly to a kind of check device of winding deformation tester.
Background technology
Transformer is the particularly important primary equipment of power grid, and transformer winding is the main portions of Accident of Transformer damage,
Due to short-circuit impact and itself anti-short circuit capability deficiency etc., there are the feelings deformed in various degree in operation in transformer winding
Condition happens occasionally, it will brings potential operation risk.Frequency response method is the diagnosis most common method of deformation of transformer winding
One of, the winding deformation tester of frequency-responsive is numerous in variety on the market, although methodological function is similar, when in use
All suffer from same problem：Because frequency response method has higher sensitivity and judgment accuracy, the parts damages of instrument itself
Test curve can be all influenced with the impedance variations of test loop, to influence the diagnosis of winding deformation, therefore in order to reflect
The real conditions of transformer winding, before using frequency response method tester, it is necessary to exclude because of testing conditions（Instrument is certainly
Body）And the influence caused by detection mode variation.Currently, power department surveys used various frequency response method winding deformations
The means that examination instrument is verified general lack of dedicated functions can not confirm that instrument is intact after using preceding and use, can not also arrange
Except the possibility that instrument failure itself influences diagnostic result, thus greatly reduce test job efficiency and diagnostic result can
Reliability.It send school that can solve instrument in the check problem of long-time service winding deformation tester inspection, can not frequently make in short term
Process solves the problems, such as above-mentioned functional authorization.
Utility model content
The utility model provides a kind of check device of winding deformation tester, is being used to solve current power department
When a variety of method of frequency response method winding deformation testers, general lack of the means of instrumental function inspection, it can not exclude in use
Instrument self-defect reason and the problem of influence to judge test result.
It is realized to solve the above problems, the utility model adopts the following technical solution：
A kind of check device of winding deformation tester includes at least an analogue unit；
The analogue unit includes the first branch, the second branch and ground capacity branch, first branch head end and second
Branch head end connects and as the input terminal of the analogue unit, and first branch tail end connect with the second branch tail end and as the mould
The output end of quasi-simple member, first branch head end are connect by ground capacity branch with ground wire with the second branch head end；
The first branch includes tunable capacitor module and first branch switch, and tunable capacitor module and the first branch switch
Series connection, for simulating axis of winding distribution capacity；
The second branch includes controllable impedance module and the second branch switch, and controllable impedance module and the second branch switch
Series connection, for simulating inductance between winding inter-turn or cake.Include using advantage after the technical solution：The program can be more
The distributed constant of accurate simulation transformer winding provides accurately verification reference for frequency-responsive winding deformation tester, should
Scenario-frame is simple, it is easy to accomplish, it is only necessary to simple wiring can be tested.
Preferably, described device includes 3 analogue units and 4 connecting terminals, the first analogue unit input terminal and terminal a
Connection, the first analogue unit output end are connect with the second analogue unit input terminal, and the second analogue unit output end is simulated with third
Unit input terminal connects, and third analogue unit output end is connect with terminal c, and terminal b and terminal c are separately mounted to ground wire both ends.
Include using advantage after the optimal technical scheme：After 3 analogue units, whole device is to transformer winding parameter
The accuracy of simulation increases, while simulation context increases, and is carried out convenient for various types of frequency-responsive winding deformation testers
Verification.
Preferably, the tunable capacitor module includes multiple capacitors and a capacitance change-over switch, multiple capacitors
Head end is connected with each other, and tail end is connect with capacitance change-over switch difference contact point respectively；
The controllable impedance module includes multiple inductance and an inductance switch, and the head end of multiple inductance mutually interconnects
It connects, tail end is connect with inductance switch difference contact point respectively；
The ground capacity branch includes multiple ground capacitors and a ground capacity change-over switch, multiple ground capacities
The head end of device is connected with each other, and tail end is connect with ground capacity change-over switch difference contact point respectively.Using the optimal technical scheme
Advantage includes afterwards：Adjustable module is constituted with capacitor group or inductor group using change-over switch and connect control convenient for circuit
With maintenance.
Preferably, the multiple condenser capacity is respectively the accurate monolithic capacitor of 1pF, 10pF, 1nF, 10nF；
The multiple inductance is respectively the chip inductor of 0.1mH, 1mH, 10mH, 47mH；
The multiple ground capacitor capacity is respectively the accurate monolithic capacitor of 1pF, 10pF, 1nF, 10nF.Using this
Advantage includes after optimal technical scheme：Common winding former can be inductively or capacitively combined with each other into using this kind of capacity
Quasi- parameter, is conveniently adjusted and replaces.
Preferably, further include babinet, circuit board, connecting line, panel, circuit board and connecting line be provided in the babinet,
It is provided with panel above babinet, the capability value of capacitance and inductance is printed on panel；
On circuit boards, body side is provided with connecting terminal for analogue unit setting, circuit board by connecting line with
Connecting terminal connects.Include using advantage after the optimal technical scheme：In babinet just by the unified setting of analogue unit
In carrying and safeguarding, extension circuit plate, panel are convenient for wiring and operation.
Preferably, the babinet has electro-magnetic screen function.Include using advantage after the optimal technical scheme：
The anti-interference ability for increasing device, provides the accuracy of measurement.
Preferably, the babinet is made using iron plate by sheet metal process.Using its beneficial effect after the optimal technical scheme
Fruit includes：Production cost is reduced, device for mechanical intensity is improved.
Description of the drawings
Fig. 1 is embodiment babinet and panel construction schematic diagram provided by the utility model；
Fig. 2 is analog cell circuit figure in embodiment provided by the utility model；
Fig. 3 is embodiment circuit overall structure figure provided by the utility model；
Fig. 4 is the circuit diagram of tunable capacitor module and ground connection tunable capacitor module in embodiment provided by the utility model；
Fig. 5 is controllable impedance module circuit diagram in embodiment provided by the utility model.
Specific implementation mode
To keep the purpose of this utility model, technical solution and advantage clearer, implement below in conjunction with the utility model
Fig. 1 ~ 5 in example, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described reality
It is the utility model a part of the embodiment to apply example, instead of all the embodiments.Usually it is described and illustrated herein in the accompanying drawings
The detailed description of the embodiments of the present invention is not intended to limit claimed the scope of the utility model, but only table
Show the selected embodiment of the utility model.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under the premise of creative work, shall fall within the protection scope of the present invention.
A kind of check device of winding deformation tester is that one kind is set for transformer winding and frequency response method feature
The function inspection device of meter, the test function validity for checking frequency response winding deformation tester device, to improve
The confidence level of deformation of transformer winding diagnostic work, the device include 3 analogue units and 4 connecting terminals, and analogue unit is such as
Shown in Fig. 2, including the first branch, the second branch and ground capacity branch, first branch head end are connect with the second branch head end
And as the input terminal of the analogue unit, first branch tail end connect with the second branch tail end and as the output of the analogue unit
End, first branch head end are connect by ground capacity branch with ground wire with the second branch head end；
The first branch includes tunable capacitor module K1 and the first branch switch SK1, tunable capacitor module K1 and the first branch
Switch SK1 series connection, is used for analogue transformer axis of winding distribution capacity；
As shown in figure 4, tunable capacitor module K1 includes the accurate monolithic capacitor and an electricity of 1pF, 10pF, 1nF, 10nF
Hold change-over switch, the head end of multiple capacitors is connected with each other, and tail end is connect with capacitance change-over switch difference contact point respectively；
Ground capacity branch is similar with above-mentioned tunable capacitor module, including 1pF, 10pF, 1nF, 10nF capacitor and one
The head end of ground capacity change-over switch, multiple ground capacitors is connected with each other, and tail end is different from ground capacity change-over switch respectively
Contact point connects.
The second branch includes controllable impedance module L1 and the second branch switch SL1, controllable impedance module L1 and the second branch
Switch SL1 series connection, for simulating inductance between winding inter-turn or cake；
Turn as shown in figure 5, controllable impedance module L1 includes the chip inductor of 0.1mH, 1mH, 10mH, 47mH and an inductance
Switch is changed, the head end of multiple inductance is connected with each other, and tail end is connect with inductance switch difference contact point respectively.
The present apparatus includes 3 analogue units and 4 connecting terminals, and Fig. 3 is that embodiment circuit provided by the utility model is whole
Body structure chart, as shown in figure 3, the first analogue unit input terminal is connect with terminal a, the first analogue unit output end and the second simulation
Unit input terminal connects, and the second analogue unit output end is connect with third analogue unit input terminal, third analogue unit output end
It is connect with terminal c, terminal b and terminal c are separately mounted to ground wire both ends；In order to improve the simulation context of device and easy to carry
With it is anti-interference, as shown in Figure 1, device further includes babinet, circuit board, connecting line, panel, babinet babinet passes through metal plate using iron plate
Technique is made, and circuit board and connecting line is arranged inside, and panel is provided with above babinet, and capacitance and inductance are printed on panel
Capability value；Analogue unit is arranged on circuit boards, and body side is provided with connecting terminal, and circuit board passes through connecting line and terminals
Son connection.
Frequency-responsive winding deformation tester functional devices check case：
Case 1：Instrument networking acceptance
By taking OMICRON FRAnalyzer winding deformation testers as an example, networks and checked and accepted when first used in instrument, will be surveyed
The excitation of examination instrument is connected to the ends a of the device, and reference signal detection is connected to the ends device a, and response signal detection is connected to this
The ends device c, the equal device in earth shield end meet b, d, and altogether with winding deformation tester earth point.As shown in Figure 1, this dress is arranged
Tunable capacitor K1, K2, the K3 set is 10pF, and setting controllable impedance L1, L2, L3 are 1mH, and the tunable capacitor of the present apparatus is arranged
C1, C2, C3 are 10pF.It subsequently powers on and starts to measure, it is complete using the frequency response curve measured as initial frequency response curve 1
Wiring and rewiring are removed after being tested at first time, are carried out the 2nd time and are tested and obtain initial frequency response curve 2, compare two songs
The related coefficient of line, such as related coefficient >=6（It can voluntarily reference instrument demand of technical standard set）, then it is assumed that the networking instrument
It is repeated good, panel capacitance inductance parameters at this time are recorded, and it is instrument original frequency response curve to take second of curve, is convenient for
Subsequently use instrument when as reference.
Case 2：It is functional before transformer winding testing experiment to check
By taking OMICRON FRAnalyzer winding deformation testers as an example, deformation of transformer winding testing experiment is being carried out
Before, the excitation of tester is connected to the ends a of the device, reference signal detection is connected to the ends device a, response signal test side
The ends device c are connected to, the equal device in earth shield end meets b, d, and altogether with winding deformation tester earth point.As shown in Figure 1, setting
Tunable capacitor K1, K2, the K3 for setting the present apparatus are 10pF, and setting controllable impedance L1, L2, L3 are 1mH, and be arranged the present apparatus can
It is 10pF to adjust capacitance C1, C2, C3.It subsequently powers on and starts to measure, using the measured frequency response curve as live frequency response
Related coefficient between curve, more live frequency response curve and initial frequency response curve under the device parameter state is such as related
Coefficient >=4（It can voluntarily set according to requirements）, then it is assumed that the instrument this using preceding in good condition, then carry out winding change
The result of shape test gained has high confidence level；If ＜ 4, searches and exclude the reason outside instrument and re-start function inspection
Test is looked into, such as repetition measurement result still backlog demand, then it is assumed that this has low using the result obtained by the winding deformation tester
Confidence level, it is proposed that carry out winding deformation testing experiment again after excluding instrument failure reason.
Case 3：Deformation of transformer winding simulation test experiment and research training
By taking OMICRON FRAnalyzer winding deformation testers as an example, using the device as can be analogue transformer winding
Device.When simulation test, the excitation of tester is connected to the ends a of the device, reference signal detection is connected to device a
End, response signal detection are connected to the ends device c, and the equal device in earth shield end meets b, d, and with winding deformation tester earth point
Altogether.By setting tunable capacitor K1, K2, K3 of the present apparatus as arbitrary initial value, setting controllable impedance L1, L2, L3 are arbitrary
Initial value, tunable capacitor C1, C2, C3 that the present apparatus is arranged are arbitrary initial value, are powered and carry out simulation test, are obtained initial bent
Line；K1, K2, K3, L1, L2, L3, C1, C2, C3 then are adjusted by way of controlling variable, is occurred with analogue transformer winding
Different type deform when equivalent parameters situation of change, followed by after adjusting simulation winding deformation test, and with it is initial
Curve is compared, and analyzes influence of the different change types to frequency response curve high band, Mid Frequency and low-frequency range.
Claims (7)
1. a kind of check device of winding deformation tester, it is characterised in that：Including at least an analogue unit；
The analogue unit includes the first branch, the second branch and ground capacity branch, first branch head end and the second branch
Head end connects and as the input terminal of the analogue unit, and first branch tail end connect with the second branch tail end and as the simulation list
The output end of member, first branch head end are connect by ground capacity branch with ground wire with the second branch head end；
The first branch includes that tunable capacitor module and the first branch switch, tunable capacitor module and first branch switch series
Connection, for simulating axis of winding distribution capacity；
The second branch includes that controllable impedance module and the second branch switch, controllable impedance module and the second branch switch series
Connection, for simulating inductance between winding inter-turn or cake.
2. the apparatus according to claim 1, it is characterised in that：
Described device includes 3 analogue units and 4 connecting terminals, and the first analogue unit input terminal is connect with terminal a, the first mould
Quasi-simple member output end is connect with the second analogue unit input terminal, and the second analogue unit output end connects with third analogue unit input terminal
It connects, third analogue unit output end is connect with terminal c, and terminal b and terminal c are separately mounted to ground wire both ends.
3. the apparatus according to claim 1, it is characterised in that：
The tunable capacitor module includes multiple capacitors and a capacitance change-over switch, and the head end of multiple capacitors mutually interconnects
It connects, tail end is connect with capacitance change-over switch difference contact point respectively；
The controllable impedance module includes multiple inductance and an inductance switch, and the head end of multiple inductance is connected with each other, tail
End is connect with inductance switch difference contact point respectively；
The ground capacity branch includes multiple ground capacitors and a ground capacity change-over switch, multiple ground capacitors
Head end is connected with each other, and tail end is connect with ground capacity change-over switch difference contact point respectively.
4. device according to claim 3, it is characterised in that：
The multiple condenser capacity is respectively the accurate monolithic capacitor of 1pF, 10pF, 1nF, 10nF；
The multiple inductance is respectively the chip inductor of 0.1mH, 1mH, 10mH, 47mH；
The multiple ground capacitor capacity is respectively the accurate monolithic capacitor of 1pF, 10pF, 1nF, 10nF.
5. the apparatus according to claim 1, it is characterised in that：
Further include babinet, circuit board, connecting line, panel, circuit board and connecting line are provided in the babinet, is arranged above babinet
There is panel, the capability value of capacitance and inductance is printed on panel；
On circuit boards, body side is provided with connecting terminal, and circuit board passes through connecting line and wiring for the analogue unit setting
Terminal connects.
6. device according to claim 5, it is characterised in that：
The babinet has electro-magnetic screen function.
7. device according to claim 6, it is characterised in that：
The babinet is made using iron plate by sheet metal process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721574059.7U CN207622682U (en) | 2017-11-22 | 2017-11-22 | A kind of check device of winding deformation tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721574059.7U CN207622682U (en) | 2017-11-22 | 2017-11-22 | A kind of check device of winding deformation tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207622682U true CN207622682U (en) | 2018-07-17 |
Family
ID=62829861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721574059.7U Withdrawn - After Issue CN207622682U (en) | 2017-11-22 | 2017-11-22 | A kind of check device of winding deformation tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207622682U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917661A (en) * | 2017-11-22 | 2018-04-17 | 广西电网有限责任公司电力科学研究院 | Function inspection device for frequency-responsive winding deformation tester |
-
2017
- 2017-11-22 CN CN201721574059.7U patent/CN207622682U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917661A (en) * | 2017-11-22 | 2018-04-17 | 广西电网有限责任公司电力科学研究院 | Function inspection device for frequency-responsive winding deformation tester |
| CN107917661B (en) * | 2017-11-22 | 2023-10-27 | 广西电网有限责任公司电力科学研究院 | Function inspection device for frequency response type winding deformation tester |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101706535B (en) | Device and method for testing dielectric loss of high voltage transformer | |
| CN203502580U (en) | Checking system for online insulation monitoring device | |
| CN101004436A (en) | High senitive system for detecting local discharging of high voltage electric power equipment with large capacity | |
| CN101393255A (en) | Verifying apparatus for zinc oxide arrester tester | |
| CN113721071A (en) | System and method for measuring non-intrusive voltage to ground | |
| CN207622682U (en) | A kind of check device of winding deformation tester | |
| CN109490607A (en) | Super UHV transmission line series compensation device MOV parallel shunt homogeneity testing method | |
| CN101545962B (en) | Integral check system of FRA-type winding deformation tester | |
| CN106443392B (en) | Optical fiber partial discharge test system and method under alternating current and direct current superposed voltage | |
| CN108896952A (en) | Power grid exception simulated testing system and its test method | |
| CN202351421U (en) | Error detection device for current transformer | |
| CN105182116B (en) | A kind of transformer winding working state detecting method based on weighted gradient structural similarity | |
| CN105890808A (en) | Temperature calibrator for main transformer | |
| CN107917661A (en) | Function inspection device for frequency-responsive winding deformation tester | |
| CN215728764U (en) | Integrated calibration system of transformer equipment insulation on-line monitoring device | |
| CN215375595U (en) | Ground net ground resistance tester that tests is carried out through inside and outside power of instrument | |
| CN201583600U (en) | Device for testing the dielectric loss of high voltage transformer | |
| US20220413030A1 (en) | Method and apparatus configuring conductive plane | |
| CN108051715B (en) | Air-core reactor turn-to-turn insulation defect detection system and method | |
| CN201289525Y (en) | Checkout device for zinc oxide lightning arrester tester | |
| CN203012053U (en) | Testing device for impedance characteristics of high-voltage power equipment port | |
| CN107748345B (en) | Device and method for verifying parameters of secondary voltage dividing plate of high-voltage direct-current voltage divider | |
| CN210166483U (en) | Portable device for ground resistance alarm value verification and line selection verification | |
| CN208314174U (en) | A kind of integrated calibration equipment for electrical test instrument | |
| CN206876222U (en) | A kind of signal regulating device suitable for Hydropower Unit test equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180717 Effective date of abandoning: 20231027 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180717 Effective date of abandoning: 20231027 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |