CN204439764U - Transformer parameter comprehensive tester - Google Patents
Transformer parameter comprehensive tester Download PDFInfo
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- CN204439764U CN204439764U CN201520160754.3U CN201520160754U CN204439764U CN 204439764 U CN204439764 U CN 204439764U CN 201520160754 U CN201520160754 U CN 201520160754U CN 204439764 U CN204439764 U CN 204439764U
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- 238000012360 testing method Methods 0.000 claims abstract description 67
- 230000003750 conditioning effect Effects 0.000 claims abstract description 17
- 238000005259 measurement Methods 0.000 claims description 8
- 239000011159 matrix material Substances 0.000 claims description 4
- 230000010354 integration Effects 0.000 abstract description 2
- 238000004804 winding Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Abstract
The utility model relates to a kind of transformer parameter comprehensive tester, match with main control system and the direct current resistance of transformer tested, megger test and no-load voltage ratio test, it comprises and to connect with signal with main control system and to control module in transfer control signal, the single phase alternating current power supply of input is converted to test desired form power supply under the control of the control signal transmitted in middle control module and the driving source module that exports, under the control of the control signal transmitted of middle control module, carry out range switch and the self-adapting signal conditioning module of the return signal of measuring transformer, the wiring of the connection terminal of transformer is adjusted from organizing module under the control of the control signal transmitted of middle control module.The Test integration of the parameters to transformer is integrated by the utility model, by with coordinating of main control system and the test that completes transformer, its structure is simple, and be easy to integrated, compact, portability is high.
Description
Technical field
The utility model relates to a kind of for the major equipment in electric system---and transformer detects used portable, multi-functional parametric synthesis tester.
Background technology
Transformer is one of major equipment in electric system, and its performance quality directly affects the safe operation of electric system, therefore just seems particularly important to the detection of transformer.The detection of transformer is generally needed to the direct current resistance of measuring transformer winding and sleeve, the welding quality of winding inner lead joint, lead-in wire and the welding quality of winding joint, each tap position of voltage tap switch can be checked out like this and go between with the contact of sleeve pipe whether well, correctly whether parallel branch be connected, transformer current carrying part with or without short-circuit conditions and winding with or without short circuit phenomenon; In addition, in transformer short-circuit test and temperature rise test, for providing winding resistance accurately, the measurement carrying out direct current resistance is also needed.With this, the no-load voltage ratio of its secondary measuring transformer, checks whether no-load voltage ratio conforms to nameplate, to ensure the correct conversion to voltage; Check that whether the position of shunting switch is correct; After transformer breaks down, checking whether winding inter-turn exists turn-to-turn short circuit by measuring no-load voltage ratio, judging whether transformer can parallel running.
The domestic and international test to transformer at present has two kinds of modes, and one utilizes transformer synthesis test board, and another is exactly use different instrumentation tests respectively.Transformer synthesis test board volume is large, is unfavorable for moving, also not having portability, has when much needing on-the-spot test and can not use.And though instrumentation has portability, but mostly can only some projects of single test transformer, therefore test a transformer just to need to carry several special test equipment, and different instruments may from different producers, this just to carrying, use, management testing data bring inconvenience.Therefore little, lightweight, the portable integrated testing instrument for transformer of a kind of volume is just needed.
Summary of the invention
The purpose of this utility model is to provide a kind ofly has many kinds of parameters test function and transformer parameter comprehensive tester easy to carry.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of transformer parameter comprehensive tester, match with main control system and the direct current resistance of transformer tested, megger test and no-load voltage ratio test, described transformer parameter comprehensive tester comprises and to connect with signal with described main control system and to control module in transfer control signal, control in described module transmit described in control signal control under the single phase alternating current power supply of input is converted to test desired form power supply and the driving source module that exports, range switching is carried out and the self-adapting signal conditioning module of the return signal of transformer described in measuring under controlling the control of the control signal transmitted of module in described, the wiring of the connection terminal of the transformer under controlling the control of the control signal transmitted of module in described described in adjustment is from organizing module, described driving source module is connected with described transformer from group module by described wiring, described transformer is connected with described self-adapting signal conditioning module, described self-adapting signal conditioning module and described main control system connect with signal.
Described driving source module comprises three converting units, is respectively the first converting unit described single phase alternating current power supply being converted to the described 1-5A steady direct current stream power supply needed for direct current resistance test, the second converting unit described single phase alternating current power supply being converted to the 0-5kV high voltage-small current direct supply needed for described megger test, described single phase alternating current power supply is converted to the 3rd converting unit of the described 0-400V three-phase alternating-current supply needed for no-load voltage ratio test.
Described driving source module also comprises the feedback control unit of the feedback unit of the power supply signal that the converting unit described in feedback exports, the converting unit according to the signal control of described feedback unit.
Described self-adapting signal conditioning module comprises three measuring units, the direct current resistance be respectively described in measurement test the volt magnitude voltage signals returned the first measuring unit, measure described in the milliampere level current signal that returns of megger test the second measuring unit, measure described in no-load voltage ratio test the 3rd test cell of alternating voltage between the triple-phase line that returns.
Described wiring comprises corresponding with the terminal in described transformer from group module and can carry out combining the terminal matrix of wiring.
Because technique scheme is used, the utility model compared with prior art has following advantages: the Test integration of the parameters to transformer is integrated by the utility model, by the test completed transformer with coordinating of main control system, its structure is simple, be easy to integrated, compact, portability is high.
Accompanying drawing explanation
Accompanying drawing 1 is the theory diagram of transformer parameter comprehensive tester of the present utility model.
Accompanying drawing 2 is the schematic diagram of the first converting unit of driving source module in transformer parameter comprehensive tester of the present utility model.
Accompanying drawing 3 is the schematic diagram of the second converting unit of driving source module in transformer parameter comprehensive tester of the present utility model.
Accompanying drawing 4 is the schematic diagram of the 3rd converting unit of driving source module in transformer parameter comprehensive tester of the present utility model.
Embodiment
Below in conjunction with embodiment shown in the drawings, the utility model is further described.
Embodiment one: as shown in Figure 1, matched with main control system the direct current resistance of transformer tested, a transformer parameter comprehensive tester that megger test and no-load voltage ratio are tested, it comprises middle control module, driving source module, self-adapting signal conditioning module and wiring from organizing module.
Middle control module is used for the control signal that transfer control main frame is assigned, and carries out the information such as the kind of testing needed for comprising in this control signal.Input end and the main control system of controlling module in this connect with signal, and wired mode both can have been adopted also can to adopt wireless mode.And middle control module has three output terminals, be connected from organizing module with driving source module, self-adapting signal conditioning module and wiring respectively.
Power supply single phase alternating current power supply is converted to needed for carried out test under driving source module is used for the control of the control signal transmitted in middle control module.DC Resistance Test of Transformer needs to use 1-5A constant-direct current electric current power supply, Insulation Resistance of Transformer test needs 0-1-2.5-5kV high voltage small area analysis direct supply, transformer voltage ratio error test needs a 0-400V three-phase alternating-current supply, thus, driving source module comprises three converting units, namely the first converting unit single phase alternating current power supply being converted to the 1-5A steady direct current stream power supply needed for direct current resistance test is respectively, single phase alternating current power supply is converted to the second converting unit of the 0-5kV high voltage-small current direct supply needed for megger test, single phase alternating current power supply is converted to the 3rd converting unit of the 0-400V three-phase alternating-current supply needed for no-load voltage ratio test.This driving source module has an input end, three output terminals and a control end, an input end input single-phase AC power, a control end is connected with an output terminal of hollow module, and three output terminals then distinguish the output terminal of corresponding three converting units.When it receives control signal, its converting unit different according to the test starting carried out needed in control signal is carried out Power convert and exports, thus achieves a road power supply input, the object that three road heterogeneity excitation power supplies export.In the 3rd converting unit corresponding to no-load voltage ratio test, export three-phase alternating-current supply, follow-uply like this ultimate principle, directly can carry out computing to no-load voltage ratio data, and do not needing the related work carrying out single-phase conversion three-phase.Driving source module also comprises the feedback unit of the power supply signal that feedback converting unit exports, controls the feedback control unit of converting unit according to the signal of feedback unit; each converting unit all can be equipped with a feedback control unit, and can be equipped with corresponding protection circuit.
Wiring is used for the mode of connection of the connection terminal adjusting transformer according to control signal from group module, and driving source module is connected with transformer from group module by this wiring.Wiring comprises corresponding with the terminal in transformer from group module and can carry out combining the terminal matrix of wiring.During DC Resistance Test of Transformer, effective wiring is between transformer side winding two terminals, and other terminal will keep the off-state electrically.During Insulation Resistance of Transformer test, when carrying out side to opposite side and ground test, whole for the terminal of excitation electric source short circuit must be pressurizeed, opposite side then all short circuit ground connection.When carrying out transformer voltage ratio error test, high voltage side of transformer three terminals have three-phase 400V AC power to input, and need carry out the measurement of three hi-line voltages simultaneously, and low-pressure side three terminals also will carry out three-phase linear dimensional measurement, now, six transformer terminal are all used.Therefore, the terminal matrix of wiring in group module, press temporarily 3*3 and considers, carry out wherein any one pilot project time, by the requirement of middle control module, carry out terminal restructuring, realize accordingly correctly test connection according to different tests project.
Self-adapting signal conditioning module is used under control of the control signal and carries out the return signal that range switches also measuring transformer, and its input end is connected with transformer, and output terminal then connects with signal with main control system.The measurement return signal of DC Resistance Test of Transformer is the voltage signal between tested transformer terminal, belongs to the d. c. voltage signal of volt level; The test return signal of Insulation Resistance of Transformer is then direct current milliampere level current signal; The measurement return signal of transformer voltage ratio error test be respectively high-pressure side 400V triple-phase line between the 400/K(K of alternating voltage and low-pressure side be the actual no-load voltage ratio of transformer) triple-phase line between alternating voltage.Therefore, this self-adapting signal conditioning module comprises three measuring units, is respectively and measures that direct current resistance test the first measuring unit of the volt magnitude voltage signals returned, the 3rd test cell that the second measuring unit measuring the milliampere level current signal that returns of megger test, measurement no-load voltage ratio test alternating voltage between the triple-phase line that returns.So this self-adapting signal conditioning module can be carried out the range switching of wide region according to the amplitude range of alternating voltage and accurately measure, and is DC high voltage pumping signal, then automatically cuts milliampere current detecting conditioning module and carry out work if such as detect.The circuit of each measuring unit in this self-adapting signal conditioning module can be selected corresponding circuit to realize according to actual conditions.
Middle control module, driving source module, self-adapting signal conditioning module and wiring is only integrated with from organizing module in transformer parameter comprehensive tester of the present utility model, by its coordinating thus the every test job to transformer can be completed with main control system, G language programming is used at main control system end, the signals such as obtained voltage, electric current are processed, correlation test result is drawn by related algorithm, and can show over the display, thus complete whole test function.This transformer parameter comprehensive tester compact and be easy to carry and there is multiple function, applied widely.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection domain of the present utility model.
Claims (5)
1. a transformer parameter comprehensive tester, match with main control system and the direct current resistance of transformer tested, megger test and no-load voltage ratio test, it is characterized in that: described transformer parameter comprehensive tester comprises and to connect with signal with described main control system and to control module in transfer control signal, control in described module transmit described in control signal control under the single phase alternating current power supply of input is converted to test desired form power supply and the driving source module that exports, range switching is carried out and the self-adapting signal conditioning module of the return signal of transformer described in measuring under controlling the control of the control signal transmitted of module in described, the wiring of the connection terminal of the transformer under controlling the control of the control signal transmitted of module in described described in adjustment is from organizing module, described driving source module is connected with described transformer from group module by described wiring, described transformer is connected with described self-adapting signal conditioning module, described self-adapting signal conditioning module and described main control system connect with signal.
2. transformer parameter comprehensive tester according to claim 1, it is characterized in that: described driving source module comprises three converting units, be respectively the first converting unit described single phase alternating current power supply being converted to the described 1-5A steady direct current stream power supply needed for direct current resistance test, described single phase alternating current power supply is converted to the second converting unit of the 0-5kV high voltage-small current direct supply needed for described megger test, described single phase alternating current power supply is converted to the 3rd converting unit of the described 0-400V three-phase alternating-current supply needed for no-load voltage ratio test.
3. transformer parameter comprehensive tester according to claim 2, is characterized in that: described driving source module also comprises the feedback control unit of the feedback unit of the power supply signal that the converting unit described in feedback exports, the converting unit according to the signal control of described feedback unit.
4. transformer parameter comprehensive tester according to claim 1, it is characterized in that: described self-adapting signal conditioning module comprises three measuring units, the direct current resistance be respectively described in measurement test the volt magnitude voltage signals returned the first measuring unit, measure described in the milliampere level current signal that returns of megger test the second measuring unit, measure described in no-load voltage ratio test the 3rd test cell of alternating voltage between the triple-phase line that returns.
5. transformer parameter comprehensive tester according to claim 1, is characterized in that: described wiring comprises corresponding with the terminal in described transformer from group module and can carry out combining the terminal matrix of wiring.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520160754.3U CN204439764U (en) | 2015-03-20 | 2015-03-20 | Transformer parameter comprehensive tester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520160754.3U CN204439764U (en) | 2015-03-20 | 2015-03-20 | Transformer parameter comprehensive tester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698319A (en) * | 2015-03-20 | 2015-06-10 | 国家电网公司 | Comprehensive tester for transformer parameters |
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2015
- 2015-03-20 CN CN201520160754.3U patent/CN204439764U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698319A (en) * | 2015-03-20 | 2015-06-10 | 国家电网公司 | Comprehensive tester for transformer parameters |
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