CN203786286U - Voltage transformer tester - Google Patents
Voltage transformer tester Download PDFInfo
- Publication number
- CN203786286U CN203786286U CN201420185296.4U CN201420185296U CN203786286U CN 203786286 U CN203786286 U CN 203786286U CN 201420185296 U CN201420185296 U CN 201420185296U CN 203786286 U CN203786286 U CN 203786286U
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- tester
- test
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- voltage
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- 238000012360 testing method Methods 0.000 claims abstract description 90
- 238000004804 winding Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000011664 signaling Effects 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 4
- 230000005284 excitation Effects 0.000 abstract 1
- 230000008569 process Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
Abstract
The utility model provides a voltage transformer tester. An excitation test circuit, a load test circuit, a direct-current resistance test circuit, a variable polarity test circuit and an angle contrast difference test circuit are integrated into the tester. An operator can control a corresponding test circuit to be switched on through a processor according to the actual test requirement so as to complete various tests of a voltage transformer according to voltage and current signals acquired by a signal acquisition unit, so the advantage of convenience is brought for the test work of testers, and the waste of test resources can be reduced.
Description
Technical field
The utility model relates to field of power, relates in particular a kind of voltage transformer (VT) tester.
Background technology
Voltage transformer (VT) be one with transformer unshakable in one's determination.It is mainly comprised of first and second coil, iron core and insulation.When applying a voltage U 1 on a winding, in iron core, just produce a magnetic flux φ, according to the law of electromagnetic induction, in Secondary Winding, just produce a secondary voltage U2.Change once or the number of turn of Secondary Winding, can produce different primary voltages and secondary voltage ratio, this just can form not voltage transformer (VT) on year-on-year basis.
At present, voltage transformer (VT) needs voltage transformer (VT) to test before putting into operation, and content measurement comprises actuation test, load testing, direct resistance metering, no-load voltage ratio polarity test, the test of angular difference ratio.When carrying out voltage transformer (VT) test, need to configure the multiple instruments such as stepup transformer, standard potential transformer, pressure regulator, voltage table, load box, secondary load tester, direct resistance metering instrument, bring inconvenience to the test job of voltage transformer (VT), and caused multiple resources waste.
Utility model content
In view of this, the utility model provides a kind of voltage transformer (VT) tester, this tester is integrated with voltage transformer (VT) actuation test, load testing, direct resistance metering, no-load voltage ratio polarity test, angular difference ratio and tests multiple test function, thereby offer convenience to tester's test job, reduce the waste of test resource.
For achieving the above object, the utility model provides following technical scheme:
A voltage transformer (VT) tester, comprising: the signal gathering unit that gathers first side winding voltage, secondary side winding voltage, secondary side winding electric current, secondary side load voltage and/or the secondary side load current of described voltage transformer (VT);
Be connected with described signal gathering unit, the signal that described signal gathering unit is collected carries out the signaling conversion circuit of A/D conversion;
The processor being connected with described signal gathering unit;
Be connected with described processor respectively, respectively described voltage transformer (VT) carried out actuation test circuit, load testing circuit, direct resistance metering circuit, no-load voltage ratio polarity test and the angular difference ratio test circuit of actuation test, load testing, direct resistance metering, no-load voltage ratio polarity test and the test of angular difference ratio;
Described processor is for controlling the unlatching of described actuation test circuit, described load testing circuit, described direct resistance metering circuit and described angular difference ratio test circuit or cutting out.
Preferably, described tester also comprises: be provided with the control panel that function is selected button;
Wherein said function selects button to be connected with described processor.
Preferably, described tester also comprises: testing power supply;
Described testing power supply comprises direct supply and AC power.
Preferably, described AC power is variable-frequency power sources.
Preferably, described tester also comprises: be connected with described processor, show the display of the test result of described tester.
Preferably, described tester also comprises: be connected with described processor, and the USB interface of carrying out data interaction with the external world.
Preferably, described tester also comprises: be connected with described processor, store the storer of the test result of described tester.
Preferably, described tester also comprises: be connected with described processor, print the printer of the test result of described tester.
Preferably, described processor adopting dsp processor.
Preferably, described variable-frequency power sources adopts IGBT inversion export technique.
Known via above-mentioned technical scheme, compared with prior art, the utility model openly provides a kind of voltage transformer (VT) tester.This tester is integrated with actuation test circuit, load testing circuit, direct resistance metering circuit, no-load voltage ratio polarity test circuit and angular difference ratio test circuit.Operating personnel can need to control corresponding test circuit by processor according to actual test and open, thereby the voltage and current signal collecting according to signal gathering unit completes the multiple test of voltage transformer (VT), offer convenience to tester's test job, reduce the waste of test resource.
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 shows the structural representation of an embodiment of a kind of voltage transformer (VT) detector 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, show the structural representation of an embodiment of a kind of voltage transformer (VT) detector of the utility model.
As shown in Figure 1, this tester comprises: signal gathering unit 1, signaling conversion circuit 2, processor 3, actuation test circuit 4, load testing circuit 5, direct resistance metering circuit 6, no-load voltage ratio polarity test circuit 7 and angular difference ratio test circuit 8.
Wherein, signal gathering unit 1 is for gathering first side winding voltage, secondary side winding voltage, secondary side winding electric current, secondary side load voltage and/or the secondary side load current of voltage transformer (VT).It should be noted that, this signal gathering unit 1 is provided with a plurality of signals collecting ports, operating personnel, when voltage transformer (VT) is tested, adopt different signals collecting ports with the terminals of the first side winding of voltage transformer (VT), the terminals of secondary side winding are connected with secondary side load wiring end.
Such as: when voltage transformer (VT) is carried out to actuation test, need to adopt specific signals collecting port to be connected with the terminals of the secondary side winding of voltage transformer (VT), for gathering the voltage and current of secondary side winding under the effect of AC power;
When voltage transformer (VT) is carried out to load testing, the load of voltage transformer secondary side is connected with corresponding signals collecting port, thereby gathers the voltage and current under the effect that loads on AC power;
When voltage transformer (VT) is carried out to direct resistance metering, the terminals of the secondary side winding of voltage transformer (VT) are gathered to port with signal gathering unit 1 corresponding signal and be connected, to gather the voltage and current of secondary side winding under direct supply effect;
When the no-load voltage ratio polarity to voltage transformer (VT) and the test of angular difference ratio, need to gather current transformer primary side and the secondary side voltage and current under AC power effect.
Optionally, at testing power supply of the present utility model, comprise direct supply and AC power, and this AC power is for adopting IGBT inversion export technique variable-frequency power sources.
Be connected with described signal gathering unit 1 signaling conversion circuit 2 for, the signal that described signal gathering unit 1 is collected carries out A/D conversion.
The actuation test circuit 4 being connected with described processor 3 respectively, load testing circuit 5, direct resistance metering circuit 6, no-load voltage ratio polarity test circuit 7 and angular difference ratio test circuit 8, respectively described voltage transformer (VT) is carried out to actuation test, load testing, direct resistance metering, no-load voltage ratio polarity test and the test of angular difference ratio, and test result is fed back to processor 3.
Processor 3 is for controlling the unlatching of actuation test circuit 4, described load testing circuit 5, described direct resistance metering circuit 6, no-load voltage ratio polarity test circuit 7 and described angular difference ratio test circuit 8.In the utility model, this processor 3 can adopt DSP(digital signal processor) processor.
Optionally, this tester is also provided with control panel, and on control panel, is provided with function selection button, and operating personnel can select button control tester to test accordingly voltage transformer (VT) by function.
It should be noted that, described tester also comprises: be connected with described processor, the USB interface of carrying out data interaction with the external world, shows the display of the test result of tester, stores the storer of test result of described tester and the printer of printing the test result of described tester.
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 voltage transformer (VT) tester, is characterized in that, comprising: the signal gathering unit that gathers first side winding voltage, secondary side winding voltage, secondary side winding electric current, secondary side load voltage and/or the secondary side load current of described voltage transformer (VT);
Be connected with described signal gathering unit, the signal that described signal gathering unit is collected carries out the signaling conversion circuit of A/D conversion;
The processor being connected with described signal gathering unit;
Be connected with described processor respectively, respectively described voltage transformer (VT) carried out actuation test circuit, load testing circuit, direct resistance metering circuit, no-load voltage ratio polarity test and the angular difference ratio test circuit of actuation test, load testing, direct resistance metering, no-load voltage ratio polarity test and the test of angular difference ratio;
Described processor is for controlling the unlatching of described actuation test circuit, described load testing circuit, described direct resistance metering circuit and described angular difference ratio test circuit.
2. tester according to claim 1, is characterized in that, described tester also comprises: be provided with the control panel that function is selected button;
Wherein said function selects button to be connected with described processor.
3. tester according to claim 1, is characterized in that, described tester also comprises: testing power supply;
Described testing power supply comprises direct supply and AC power.
4. tester according to claim 3, is characterized in that, described AC power is variable-frequency power sources.
5. tester according to claim 1, is characterized in that, described tester also comprises: be connected with described processor, show the display of the test result of described tester.
6. tester according to claim 1, is characterized in that, described tester also comprises: be connected with described processor, and the USB interface of carrying out data interaction with the external world.
7. tester according to claim 1, is characterized in that, described tester also comprises: be connected with described processor, store the storer of the test result of described tester.
8. tester according to claim 1, is characterized in that, described tester also comprises: be connected with described processor, print the printer of the test result of described tester.
9. tester according to claim 1, is characterized in that, described processor adopting dsp processor.
10. tester according to claim 4, is characterized in that, described variable-frequency power sources adopts IGBT inversion export technique.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420185296.4U CN203786286U (en) | 2014-04-16 | 2014-04-16 | Voltage transformer tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420185296.4U CN203786286U (en) | 2014-04-16 | 2014-04-16 | Voltage transformer tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203786286U true CN203786286U (en) | 2014-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420185296.4U Expired - Lifetime CN203786286U (en) | 2014-04-16 | 2014-04-16 | Voltage transformer tester |
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| Country | Link |
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| CN (1) | CN203786286U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104198871A (en) * | 2014-09-26 | 2014-12-10 | 重庆梅安森科技股份有限公司 | Electronic device tester and testing method thereof |
| CN104808067A (en) * | 2015-05-13 | 2015-07-29 | 国家电网公司 | Multifunctional digital CT (Computed Tomography) secondary detector |
| CN105699731A (en) * | 2015-11-16 | 2016-06-22 | 王爱玲 | Electronic voltage transformer |
| CN110927648A (en) * | 2019-11-29 | 2020-03-27 | 西安锐驰电器有限公司 | Full-automatic mutual inductor characteristic test system |
| CN111781419A (en) * | 2020-07-08 | 2020-10-16 | 上海马拉松·革新电气有限公司 | Integrated voltage detection and signal acquisition system for medium and high voltage generator |
-
2014
- 2014-04-16 CN CN201420185296.4U patent/CN203786286U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104198871A (en) * | 2014-09-26 | 2014-12-10 | 重庆梅安森科技股份有限公司 | Electronic device tester and testing method thereof |
| CN104198871B (en) * | 2014-09-26 | 2017-02-15 | 重庆梅安森科技股份有限公司 | Electronic device tester and testing method thereof |
| CN104808067A (en) * | 2015-05-13 | 2015-07-29 | 国家电网公司 | Multifunctional digital CT (Computed Tomography) secondary detector |
| CN104808067B (en) * | 2015-05-13 | 2019-04-19 | 国家电网公司 | Multifunctional digital CT secondary detection instrument |
| CN105699731A (en) * | 2015-11-16 | 2016-06-22 | 王爱玲 | Electronic voltage transformer |
| CN110927648A (en) * | 2019-11-29 | 2020-03-27 | 西安锐驰电器有限公司 | Full-automatic mutual inductor characteristic test system |
| CN111781419A (en) * | 2020-07-08 | 2020-10-16 | 上海马拉松·革新电气有限公司 | Integrated voltage detection and signal acquisition system for medium and high voltage generator |
| CN111781419B (en) * | 2020-07-08 | 2022-10-28 | 上海马拉松·革新电气有限公司 | Integrated voltage detection and signal acquisition system for medium and high voltage generator |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |