CN105823928A - Portable direct current resistance and transformation ratio test integrated device and operation method - Google Patents
Portable direct current resistance and transformation ratio test integrated device and operation method Download PDFInfo
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- CN105823928A CN105823928A CN201610296808.8A CN201610296808A CN105823928A CN 105823928 A CN105823928 A CN 105823928A CN 201610296808 A CN201610296808 A CN 201610296808A CN 105823928 A CN105823928 A CN 105823928A
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- voltage ratio
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/20—Measuring number of turns; Measuring transformation ratio or coupling factor of windings
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- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention relates to a portable direct current resistance and transformation ratio test integrated device. The device includes a power supply and a switch, and is characterized in that the device also includes a wiring unit, a grounding end, a control unit and a display unit, the control unit is connected with a single-chip microcomputer in the device, the single-chip microcomputer is connected with the wiring unit and the display unit, the control unit is connected with a printing unit, one end of the grounding end is connected with the device, the other end of the grounding end is connected to the ground, the grounding end is used for protecting the safety of the device and a device under test. The portable direct current resistance and transformation ratio test integrated device provided by the invention has the characteristics of being convenient to carry, being easy to operate and being rapid and labor-saving.
Description
Technical field
The present invention relates to a kind of Portable direct leakage resistance, no-load voltage ratio testing integrated device, belong to power system transformer field tests.
Background technology
Pilot project important in transformer test during DCR of Transformer test.Test Transformer Winding together with the D.C. resistance of sleeve pipe, can check the welding quality of winding inner lead joint, lead-in wire switch with winding joint welding quality, voltage tap the contact of each tap position and lead-in wire and sleeve pipe well, parallel branch be connected the most correctly, transformator current carrying part with or without open circuit, loose contact and winding with or without short circuit phenomenon；Transformer voltage ratio is one of essential condition of parallel operation of transformers, for the transformator after installing, no-load voltage ratio test mainly checks that position of tapping switch and each outlet terminal mark are the most correct compared with transformator famous brand, and after breaking down in transformator road, check whether transformator exists turn-to-turn short circuit etc..Therefore each phase parameter of DCR of Transformer, no-load voltage ratio test there is one truly, hold accurately, it is necessary to transformator is carried out D.C. resistance, no-load voltage ratio is specifically measured.This is for the safety of accurate evaluation transformator, it is ensured that transformator reliability service tool is of great significance.Carrying out DCR of Transformer test and transformer voltage ratio test process thereof, the requirement according to surveyed project is different, needs to carry out respectively testing wiring and thread-changing, to meet corresponding test condition to surveyed transformator with different p-wires.During as carried out D.C. resistance test, no-load voltage ratio, use corresponding instrument for measuring DC resistance, no-load voltage ratio tester according to transformer voltage grade, p-wire is fixed on Three-Phase Transformer winding, on transformator high and low pressure terminal simultaneously.In the test of traditional DCR of Transformer, no-load voltage ratio, by testing crew, the experimental test line of test event is received on transformator high and low pressure winding, owing to there being load transformer tap gear more, the test thread-changing of high and low pressure winding needs to carry out repeatedly, due to sleeve surface cleannes and firmness in connecting test line process, often making p-wire sufficiently not contact with sleeve pipe firmly, this allows for testing crew consumption muscle power in a large number and carries out repeatedly connecting test line to reach test condition.In traditional transformer D.C. resistance, no-load voltage ratio test process, there are the following problems: one is to there is uncertain factor with being manually attached p-wire, the contact firmness of usual p-wire, it is impossible to meet test request；Two is that testing crew needs repeatedly to climb transformator during carrying out p-wire thread-changing, consumes one's strength, dangerous factor；Three is that the testing time is longer, and (DCR of Transformer test is it is generally required to 30min it is generally required to 1 hour under normal circumstances；Transformer voltage ratio test is it is generally required to 30min)；Four is to need personnel's many (needing 2-3 people to complete), and inefficiency.
In sum, in order to ensure personal security in electrical network and process of the test, test transformer parameter quick, convenient is needed according to instrument, use a kind of novel portable D.C. resistance, no-load voltage ratio testing integrated device, this device is easy to carry, simple to operate, and can need quickly to be connected by p-wire according to testing crew, work efficiency is high.
Summary of the invention
The present invention provides a kind of Portable direct leakage resistance, no-load voltage ratio testing integrated device, it is to overcome use multiple stage testing equipment to carry out DCR of Transformer, no-load voltage ratio test, solves that testing crew carries out repeatedly changing in DCR of Transformer, no-load voltage ratio test process that test connection brings is dangerous, efficiency is low, consume one's strength the problem such as big simultaneously.
The present invention is achieved by the following technical solutions:
Portable direct leakage resistance, no-load voltage ratio testing integrated device, including power supply and switch, characterized by further comprising control unit, earth terminal and fan, described control unit is connected with the single-chip microcomputer in device, and described single-chip microcomputer is connected with wiring units and display unit respectively, and described control unit is connected with print unit, described earth terminal one end is connected with device, earth terminal other end ground connection, described fan is located at inside device, and device is carried out air discharging and radiating.
Wherein, described control unit includes that tapping gear, selection key and function button, described tapping gear are used for testing transformer voltage ratio.
Wherein, described single-chip microcomputer be D.C. resistance is tested module and no-load voltage ratio test module integrate, carry out transformer parameter test.
Wherein, described wiring units is binding post, the test connection in stationary transformer is tested.
Wherein, described display unit is display screen, for showing DCR of Transformer and the test event of no-load voltage ratio and data message.
Wherein, described function button includes feeler switch, determines key, reset key and printing key, and described reset key is for discharging to device, thus protection device and personal security.
Portable direct leakage resistance, the operational approach of no-load voltage ratio testing integrated device, comprise the following steps:
(1) control unit selects according to test event, and wiring units and earth terminal connect correct；
(2) switching on power, open switch, display unit can show D.C. resistance, no-load voltage ratio test event, carries out project alternatives according to test requirements document；
(3) starting control unit feeler switch, device normally works；
(4), after test job completes, control unit reset key is started, it is ensured that device discharges completely；
(5), after having discharged, tester can be replaced test connection.
Compared with prior art, the invention have the benefit that Portable direct leakage resistance, no-load voltage ratio testing integrated device that the present invention provides, have easy to carry, simple to operate, the feature of fast power-saving；Operation button, can use Portable direct leakage resistance, no-load voltage ratio integrated device that test function is chosen the test event required for transformator, device carries out D.C. resistance or no-load voltage ratio test job automatically by testing button, make DCR of Transformer, no-load voltage ratio test job, time saving and energy saving, work efficiency is high；It is arranged on the fan within device and device can be carried out air discharging and radiating, the service life of extension fixture.
Accompanying drawing explanation
Fig. 1 is Portable direct leakage resistance of the present invention, the structural representation of no-load voltage ratio testing integrated device.
Fig. 2 is Portable direct leakage resistance of the present invention, the structured flowchart of no-load voltage ratio testing integrated device.
In figure: 1. power supply, 2. wiring units, 3. earth terminal, 4. control unit, 41. tapping gears, 42. selection keys, 43. function buttons, 5. display unit, 6. print unit, 7. switch.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail.That below implements to be only the present invention is embodied as citing, but the design concept of the present invention is not limited thereto, all changes utilizing this design that the present invention carries out unsubstantiality, all should be within scope.
Embodiment
As shown in Figure 1, Portable direct leakage resistance, no-load voltage ratio testing integrated device, including power supply 1 and switch 7, also include wiring units 2, earth terminal 3, control unit 4 and display unit 5, control unit 4 is connected with the single-chip microcomputer in device, single-chip microcomputer is connected with wiring units 2 and display unit 5 respectively, single-chip microcomputer be D.C. resistance is tested module and no-load voltage ratio test module integrate, carry out transformer parameter test, control unit 4 is connected with print unit 6, earth terminal 3 one end is connected with device, earth terminal 3 other end ground connection, earth terminal 3 is for protection device and the safety of tested device.
Wherein, control unit 4 includes tapping gear 41, selection key 42 and function button 43, and tapping gear 41 is used for testing transformer voltage ratio, and function button 43 includes feeler switch, determines key, reset key and printing key; reset key is for discharging to device, thus protection device and personal security.Wiring units 2 is binding post, the test connection in stationary transformer is tested.Display unit 5 is display screen, is additionally provided with fan for showing, can carry out air discharging and radiating, the physical life of extension fixture inside DCR of Transformer and the test event of no-load voltage ratio and data message, this device.
Power supply 1 major function is to provide installation's power source, and holding means is persistently charged, it is ensured that device normally works.Wiring units 2 uses binding post mode, the test connection being used for fixing in transformer testing.Wiring units 2 is used for connection transformer and test device, and wiring units 2 guarantee test wiring is reliably connected, and increases contact area.Wiring quantity is determined according to testing concrete test event, greatly reduces transformator and tests D.C. resistance, no-load voltage ratio conversion time simultaneously, and earth terminal 3 guarantees device reliable ground, protection device and device being tested safe operation.
As shown in Figure 2, device receives signal by wiring units 2, the DCR of Transformer, the no-load voltage ratio test event signal that receive show on display unit 5, control unit 4 selects to need the project of test, then data process is carried out by single-chip microcomputer, read data message by display unit 5, carry out data-printing by print unit 6 the most again.
The concrete operation method of this device is as follows:
Control unit 4 selects according to test event, and wiring units 2 and earth terminal 3 connect correctly, switches on power 1, open switch 7, display unit 5 can show D.C. resistance, no-load voltage ratio test event, carries out project alternatives according to test requirements document, starts control unit 4 feeler switch, device normally works, after test job completes, start control unit 4 reset key, it is ensured that device discharges completely, after having discharged, tester can be replaced test connection.
Claims (7)
1. Portable direct leakage resistance, no-load voltage ratio testing integrated device, including power supply and switch, characterized by further comprising control unit, earth terminal and fan, described control unit is connected with the single-chip microcomputer in device, and described single-chip microcomputer is connected with wiring units and display unit respectively, and described control unit is connected with print unit, described earth terminal one end is connected with device, earth terminal other end ground connection, described fan is located at inside device, and device is carried out air discharging and radiating.
Portable direct leakage resistance the most according to claim 1, no-load voltage ratio testing integrated device, it is characterised in that described control unit includes that tapping gear, selection key and function button, described tapping gear are used for testing transformer voltage ratio.
Portable direct leakage resistance the most according to claim 1, no-load voltage ratio testing integrated device, it is characterised in that described single-chip microcomputer be D.C. resistance is tested module and no-load voltage ratio test module integrate, carry out transformer parameter test.
Portable direct leakage resistance the most according to claim 1, no-load voltage ratio testing integrated device, it is characterised in that described wiring units is binding post, the test connection in stationary transformer is tested.
Portable direct leakage resistance the most according to claim 1, no-load voltage ratio testing integrated device, it is characterised in that described display unit is display screen, for showing DCR of Transformer and the test event of no-load voltage ratio and data message.
Portable direct leakage resistance the most according to claim 2, no-load voltage ratio testing integrated device; it is characterized in that described function button includes feeler switch, determines key, reset key and printing key; described reset key is for discharging to device, thus protection device and personal security.
7. according to the Portable direct leakage resistance described in claim 1-6, the operational approach of no-load voltage ratio testing integrated device, it is characterised in that comprise the following steps:
Control unit selects according to test event, and wiring units and earth terminal connect correct；
Switching on power, open switch, display unit can show D.C. resistance, no-load voltage ratio test event, carries out project alternatives according to test requirements document；
Starting control unit feeler switch, device normally works；
After test job completes, start control unit reset key, it is ensured that device discharges completely；
After having discharged, tester can be replaced test connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610296808.8A CN105823928A (en) | 2016-05-06 | 2016-05-06 | Portable direct current resistance and transformation ratio test integrated device and operation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610296808.8A CN105823928A (en) | 2016-05-06 | 2016-05-06 | Portable direct current resistance and transformation ratio test integrated device and operation method |
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| CN105823928A true CN105823928A (en) | 2016-08-03 |
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| CN201610296808.8A Pending CN105823928A (en) | 2016-05-06 | 2016-05-06 | Portable direct current resistance and transformation ratio test integrated device and operation method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508087A (en) * | 2011-12-26 | 2012-06-20 | 石家庄供电公司 | Integrated test stand for transformers |
| CN202870212U (en) * | 2012-10-29 | 2013-04-10 | 保定市汇邦电气有限公司 | Test bench for field test of main transformer |
| CN203054090U (en) * | 2012-12-27 | 2013-07-10 | 江苏省电力公司电力科学研究院 | Vehicle-mounted integrated three-phase direct-current resistance, transformation ratio and load comprehensive testing device |
| CN103698621A (en) * | 2013-09-05 | 2014-04-02 | 国家电网公司 | Vehicle-mounted transformer comprehensive test system |
| CN105021905A (en) * | 2014-04-15 | 2015-11-04 | 国家电网公司 | Transformer direct current resistance and transformer group tester |
| CN205941692U (en) * | 2016-05-06 | 2017-02-08 | 国网辽宁省电力有限公司丹东供电公司 | Portable direct current resistance, integrative device of transformation ratio test |
-
2016
- 2016-05-06 CN CN201610296808.8A patent/CN105823928A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508087A (en) * | 2011-12-26 | 2012-06-20 | 石家庄供电公司 | Integrated test stand for transformers |
| CN202870212U (en) * | 2012-10-29 | 2013-04-10 | 保定市汇邦电气有限公司 | Test bench for field test of main transformer |
| CN203054090U (en) * | 2012-12-27 | 2013-07-10 | 江苏省电力公司电力科学研究院 | Vehicle-mounted integrated three-phase direct-current resistance, transformation ratio and load comprehensive testing device |
| CN103698621A (en) * | 2013-09-05 | 2014-04-02 | 国家电网公司 | Vehicle-mounted transformer comprehensive test system |
| CN105021905A (en) * | 2014-04-15 | 2015-11-04 | 国家电网公司 | Transformer direct current resistance and transformer group tester |
| CN205941692U (en) * | 2016-05-06 | 2017-02-08 | 国网辽宁省电力有限公司丹东供电公司 | Portable direct current resistance, integrative device of transformation ratio test |
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Application publication date: 20160803 |