CN207215903U - A kind of DCR of Transformer and transformer voltage ratio group tester - Google Patents
A kind of DCR of Transformer and transformer voltage ratio group tester Download PDFInfo
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- CN207215903U CN207215903U CN201621248883.9U CN201621248883U CN207215903U CN 207215903 U CN207215903 U CN 207215903U CN 201621248883 U CN201621248883 U CN 201621248883U CN 207215903 U CN207215903 U CN 207215903U
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Abstract
The utility model provides a kind of DCR of Transformer and transformer voltage ratio group tester, central processing controller；Module, signal acquisition module, function switching unit occur for the constant-current source being connected with central processing controller, and, human-machine interface module；The constant-current source occurs module and includes three-phase constant pressure source ac converter controller；The signal acquisition module includes current signal Acquisition Circuit and voltage signal acquisition circuit；The function switching unit includes：Switch direct current resistance m easurem ent and switching no-load voltage ratio group measurement switching part, and, one key measurement function key, the DCR of Transformer and transformer voltage ratio group tester that the utility model is related to, it instead of traditional split type straight resistance, no-load voltage ratio tester measurement module is set comprehensively, disposably connecting p-wire, in the case of changing-over p-wire, complete the no-load voltage ratio measurement and the three-phase resistance measurement and unbalance factor calculating of two windings of a transformation, and testing crew measurement efficiency can be greatly improved by a key test function of setting.
Description
Technical field
Application of Power Metering Instruments technical field is the utility model is related to, more specifically to a kind of DCR of Transformer
And transformer voltage ratio group tester.
Background technology
DCR of Transformer is tested and the test of transformer voltage ratio group, is that transformer interruption maintenance must do project,
There is highly important meaning in each Repair of Transformer.
Conventional DCR of Transformer and transformer voltage ratio group are tested, it is necessary to be tested preparation and two twice
Secondary wiring, take out stitches, greatly reduce the operating efficiency at scene.
Utility model content
In view of this, the utility model provides a kind of DCR of Transformer and transformer voltage ratio group tester, realizes
A kind of precision is high, operating efficiency is high, can operating in a key technical purpose.
The utility model discloses a kind of DCR of Transformer and transformer voltage ratio group tester, including：
Central processing controller；
Module, signal acquisition module, function switching unit occur for the constant-current source being connected with central processing controller, and,
Human-machine interface module；
The constant-current source occurs module and includes three-phase constant pressure source ac converter controller；
The signal acquisition module includes current signal Acquisition Circuit and voltage signal acquisition circuit；
The function switching unit includes：Switch direct current resistance m easurem ent and switching no-load voltage ratio group measurement switching part, and,
One key measurement function key.
Preferably, the human-machine interface module include button operation keyboard, LCD Panel, data-printing part and
Storage dish.
Preferably, the constant-current source generation module is configured with digital regulation resistance, high-operational amplifier and high-power MOS tube.
Preferably, the transformation instrument for measuring DC resistance also includes：The measurement protection being connected with the central processing controller
Unit.
It can be seen from the above technical scheme that the DCR of Transformer and transformer voltage ratio group that the utility model is related to
Other tester, instead of traditional split type straight resistance, no-load voltage ratio tester, and a kind of instrument has the institute of original two kinds of instruments active
Can, measurement module sets comprehensive, disposably is connecting p-wire, without changing-over p-wire in the case of, i.e. one transformation of completion
No-load voltage ratio measurement and the three-phase resistance measurement of two windings and unbalance factor calculate, and can by a key test function of setting,
One key operation completes each phase resistance measurement of two windings of a transformer, and the calculating of three-phase imbalance rate, greatly improves examination
Test personnel's measurement efficiency.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of DCR of Transformer disclosed in the utility model embodiment and transformer voltage ratio group tester knot
Structure schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
The utility model embodiment discloses a kind of DCR of Transformer and transformer voltage ratio group tester, realizes real
A kind of existing precision is high, operating efficiency is high, can operating in a key technical purpose.
Fig. 1 shows a kind of DCR of Transformer and transformer voltage ratio group tester, including：
Central processing controller 1；
Module 2, signal acquisition module 3, function switching unit 4 occur for the constant-current source being connected with central processing controller 1, with
And human-machine interface module 5；
The constant-current source occurs module 2 and includes three-phase constant pressure source ac converter controller；
The signal acquisition module 3 includes current signal Acquisition Circuit and voltage signal acquisition circuit；
The function switching unit 4 includes：Switch direct current resistance m easurem ent and switching no-load voltage ratio group measurement switching part, with
An and key measurement function key 41.
In the present embodiment, the key function key can be in the case where presetting test parameter, and test transformer becomes
Than group, straight resistance measurement is automatically switched to after the completion of test, is measured according to the selected advanced horizontal high voltage side of winding connection way, number
After stabilization, the measurement of low-pressure side winding is automatically switched to, is measured according to the winding connection way of setting.
Preferably, the transformation instrument for measuring DC resistance also includes：The measurement protection being connected with the central processing controller
Unit 6.
The human-machine interface module 5 includes button operation keyboard, LCD Panel, data-printing part and storage
Disk.
Described is that human-machine interface module 5 can realize extraction of the survey crew for test result.
The constant-current source occurs module 2 and is configured with digital regulation resistance, high-operational amplifier and high-power MOS tube.
The constant-current source that module 2 is used to produce different stage according to the instruction of central processing unit, such as 1A occur for the constant-current source
Constant-current source, 2A constant currents stream, 5A constant-current sources, and, produce standard three-phase ac signal 150V according to the requirement of inverter controller；Institute
The high accuracy configuration for stating constant-current source ensure that the accuracy of measurement.
Constant current source signal and constant pressure source signal pass through function switch module 4, are specifically carried out by the instruction of function switch module straight
Leakage resistance is tested or the test of no-load voltage ratio group,
The electric current of test, voltage signal are persistently sent to central processing unit and carry out signal transacting by the signal acquisition module 3,
After the completion of test, tested transformer discharge is made instrument from transformer inverse electromotive force energy by the measurement protection module
Destroy.
When the one key measurement function key 41 starts：
The central processing unit 1 using built-in algorithms control modules running, the key measurement function key be used as with
The activation member of next measurement series flow：
1. high pressure winding measures：Go out the no-load voltage ratio group of transformer according to the parameter measurement of setting, after data stabilization, start to open
Dynamic straight resistance measurement.The transformer bind mode set is first judged during straight resistance measurement, measures high pressure winding, high pressure winding three-phase resistance
After being measured, three-phase imbalance rate is calculated.
2. low pressure winding measures：After the completion of discharge process, start to measure low pressure winding, low pressure winding three-phase resistance measures
After the completion of, calculate three-phase imbalance rate.
3. the stage of display：After the completion of discharge process, high and low pressure is shown around class value and three-phase imbalance rate, and according to test
Personnel need to print measurement result.
In summary；
The DCR of Transformer and transformer voltage ratio group tester that the utility model is related to, instead of traditional split
Formula directly hinders, no-load voltage ratio tester, and a kind of instrument has the institute of original two kinds of instruments functional, and measurement module setting is comprehensive, once
Property connect p-wire, without changing-over p-wire in the case of, that is, complete no-load voltage ratio measurement and the three-phase of two windings of transformation
Resistance measurement and unbalance factor calculate, and can complete two, a transformer by a key test function of setting, a key operation
Each phase resistance measurement of winding, and the calculating of three-phase imbalance rate, greatly improve testing crew measurement efficiency.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.To the upper of the disclosed embodiments
State bright, professional and technical personnel in the field is realized or using the utility model.A variety of modifications pair to these embodiments
It will be apparent for those skilled in the art, generic principles defined herein can not depart from this reality
In the case of with new spirit or scope, realize in other embodiments.Therefore, the utility model is not intended to be limited to this
These embodiments shown in text, and it is to fit to the most wide scope consistent with principles disclosed herein and features of novelty.
Claims (1)
1. a kind of DCR of Transformer and transformer voltage ratio group tester, it is characterised in that including：
Central processing controller；
Module, signal acquisition module, function switching unit occur for the constant-current source being connected with central processing controller, and, it is man-machine
Interface module；
The constant-current source occurs module and includes three-phase constant pressure source ac converter controller；
The signal acquisition module includes current signal Acquisition Circuit and voltage signal acquisition circuit；
The function switching unit includes：Switch direct current resistance m easurem ent and switching no-load voltage ratio group measurement switching part, and, a key
Measurement function key；
Also include：The measurement protection location being connected with the central processing controller；
The human-machine interface module includes button operation keyboard, LCD Panel, data-printing part and storage dish；
The constant-current source occurs module and is configured with digital regulation resistance, high-operational amplifier and high-power MOS tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621248883.9U CN207215903U (en) | 2016-11-15 | 2016-11-15 | A kind of DCR of Transformer and transformer voltage ratio group tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621248883.9U CN207215903U (en) | 2016-11-15 | 2016-11-15 | A kind of DCR of Transformer and transformer voltage ratio group tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207215903U true CN207215903U (en) | 2018-04-10 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621248883.9U Active CN207215903U (en) | 2016-11-15 | 2016-11-15 | A kind of DCR of Transformer and transformer voltage ratio group tester |
Country Status (1)
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| CN (1) | CN207215903U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535549A (en) * | 2018-06-11 | 2018-09-14 | 保定市力兴电子设备有限公司 | A kind of hand-held three-phase transformer instrument for measuring DC resistance |
| CN108896948A (en) * | 2018-06-20 | 2018-11-27 | 成都理工大学 | A kind of no-load voltage ratio measuring device and measuring method of tandem test potential device |
| CN110196370A (en) * | 2019-06-26 | 2019-09-03 | 山东电工电气集团智能电气有限公司 | The monitoring method and device of transformer |
| CN110286290A (en) * | 2019-07-09 | 2019-09-27 | 江苏安方电力科技有限公司 | A kind of transformer automatic connection device |
| CN110426566A (en) * | 2019-08-27 | 2019-11-08 | 国网浙江长兴县供电有限公司 | A kind of hand-held transformer voltage ratio group tester |
| CN110850171A (en) * | 2019-11-29 | 2020-02-28 | 国网山东省电力公司青岛供电公司 | Evaluation method for DC resistance qualification degree of voltage regulating transformer |
| CN112415271A (en) * | 2020-11-26 | 2021-02-26 | 国网天津市电力公司 | Three-phase AC loop direct resistance full-automatic test recorder |
| CN114487929A (en) * | 2022-01-13 | 2022-05-13 | 国网湖北省电力有限公司电力科学研究院 | Automatic switching ratio-variable direct resistance measuring device and method |
-
2016
- 2016-11-15 CN CN201621248883.9U patent/CN207215903U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535549A (en) * | 2018-06-11 | 2018-09-14 | 保定市力兴电子设备有限公司 | A kind of hand-held three-phase transformer instrument for measuring DC resistance |
| CN108896948A (en) * | 2018-06-20 | 2018-11-27 | 成都理工大学 | A kind of no-load voltage ratio measuring device and measuring method of tandem test potential device |
| CN108896948B (en) * | 2018-06-20 | 2023-03-21 | 成都理工大学 | Transformation ratio measuring device and method for cascade test transformation equipment |
| CN110196370A (en) * | 2019-06-26 | 2019-09-03 | 山东电工电气集团智能电气有限公司 | The monitoring method and device of transformer |
| CN110286290A (en) * | 2019-07-09 | 2019-09-27 | 江苏安方电力科技有限公司 | A kind of transformer automatic connection device |
| CN110426566A (en) * | 2019-08-27 | 2019-11-08 | 国网浙江长兴县供电有限公司 | A kind of hand-held transformer voltage ratio group tester |
| CN110850171A (en) * | 2019-11-29 | 2020-02-28 | 国网山东省电力公司青岛供电公司 | Evaluation method for DC resistance qualification degree of voltage regulating transformer |
| CN110850171B (en) * | 2019-11-29 | 2021-09-17 | 国网山东省电力公司青岛供电公司 | Evaluation method for DC resistance qualification degree of voltage regulating transformer |
| CN112415271A (en) * | 2020-11-26 | 2021-02-26 | 国网天津市电力公司 | Three-phase AC loop direct resistance full-automatic test recorder |
| CN114487929A (en) * | 2022-01-13 | 2022-05-13 | 国网湖北省电力有限公司电力科学研究院 | Automatic switching ratio-variable direct resistance measuring device and method |
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