CN108333448A - Transformer routine test comprehensive test device - Google Patents
Transformer routine test comprehensive test device Download PDFInfo
- Publication number
- CN108333448A CN108333448A CN201810019732.3A CN201810019732A CN108333448A CN 108333448 A CN108333448 A CN 108333448A CN 201810019732 A CN201810019732 A CN 201810019732A CN 108333448 A CN108333448 A CN 108333448A
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- Prior art keywords
- test
- transformer
- resistance
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- load
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- 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
-
- 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
- G01R27/08—Measuring resistance by measuring both voltage and current
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
Transformer routine test comprehensive test device, in an equipment, the integration unit that D.C. resistance, no-load voltage ratio group, short-circuit impedance, load ratio bridging switch are tested integrates.The D.C. resistance test module by constant current source current and relevant voltage drop carry out sampling and operation obtain DC resistance.The short-circuit impedance test module is by Sample AC voltage and current value carrying out that short-circuit impedance value is calculated.The load ratio bridging switch test module to the action of load ratio bridging switch by carrying out signal sampling, to calculate transition resistance waveform and time.The load ratio bridging switch test module calculates the change of transformer when group value by acquiring the voltage signal of on high-tension side voltage signal and low-pressure side respectively.The configuration of the present invention is simple, reasonable design, easy operation securely and reliably can meet the measurement that test item D.C. resistance, no-load voltage ratio group, short-circuit impedance, load ratio bridging switch are tested.
Description
Technical field：
The present invention relates to electrical test fields, and in particular to one kind is for detecting DCR of Transformer, no-load voltage ratio group, short
The integration unit that roadlock is anti-, load ratio bridging switch is tested.
Background technology：
At present in the routine test of transformer, short-circuit impedance test and D.C. resistance test are essential, short circuits
The variable quantity of impedance is the important criterion for judging transformer winding whether there is or not deformation, can effectively find selection, the weldering of transformer coil
It connects, connecting portion loosening, lack existing hidden danger after the manufacturing defect such as stock, broken string and operation.Power transformer semi-finished product, at
In product production process, before the transformer newly installed puts into operation, it is desirable that periodically carry out voltage when group to the transformer of operation
It does not test.In addition, load ratio bridging switch is the unique motion component being connect with transformer circuit, the detection of load ratio bridging switch is got over
It more draws attention, therefore load ratio bridging switch test is also critically important content.
For a long time, power industry scene is tested into the commissioning test of line transformer routine and interruption maintenance, is used always single
The test apparatus of one function needs to use instrument for measuring DC resistance, no-load voltage ratio tester, short-circuit impedance tester, loaded tap-off
This four sets of instruments of brake switch tester.There are many instrument and equipment and attachment that scene to be worn, and the difference of test equipment and test
Line is also different, to climb up transformer in addition and disconnect line, causes test connection dismounting inconvenient, to testing the profession of service personnel
Level requirement is also very high.Thus, under existing instrument level, transformer routine test field test, which exists, takes long, operation again
The problems such as miscellaneous, high pendant risk is big.
The told comprehensive testing device for transformer of this patent is that the test function of four kinds of instruments is combined in same instrument,
And be connected with transformer using a set of p-wire, which can effectively realize efficient on-the-spot test, test method safely,
Accurately, quickly, testing crew working strength is significantly reduced, the testing time is saved, improves working efficiency.In addition, comprehensive number
Can test result quickly be generated into test report according to management software, and data are analyzed, assess field test results,
Further determine that the time of day of transformer field operation.Therefore, this project implementation has wide popularizing application prospect.
Invention content：
Problem to be solved by this invention is to provide a kind of reliable operation, practicality easy to operate, transformation easy to carry
Device routine test comprehensive tester integrates D.C. resistance, no-load voltage ratio group, short-circuit impedance, load ratio bridging switch test function,
It can facilitate and complete this four pilot projects.
Problem to be solved by this invention is realized using following technical proposal.
Transformer routine test comprehensive test device, in an equipment, by four class transformer routine test projects ---
D.C. resistance, no-load voltage ratio group, short-circuit impedance, load ratio bridging switch test gather together, it is characterized in that：Transformer synthesis is tested
Device controls four D.C. resistance, no-load voltage ratio group, short-circuit impedance, load ratio bridging switch test test modules by serial ports
System switches when can be for different application；
Four test modules include D.C. resistance test module, short-circuit impedance test module, load ratio bridging switch test mould
Block, no-load voltage ratio group test module.
It is integrated with data analysis judgment module, produces the operating condition that data test report facilitates field assay equipment,
By the integration test to transformer parameter, a comprehensive test data report is formed, and pass through the analytical judgment to data
Whether test item is qualified, provides simple conclusion (of pressure testing).
DCR of Transformer, no-load voltage ratio group, short-circuit impedance, load ratio bridging switch testing experiment project can be carried out not
Thread-changing measures, and improves on-the-spot test efficiency, and built-in different test modules, disparate modules share same set of p-wire and become
Depressor connects, and primary connection can be realized D.C. resistance, no-load voltage ratio group, short-circuit impedance, the comprehensive of load ratio bridging switch test and survey
Examination.
The D.C. resistance test module is sampled by carrying out accurate modulus to the voltage drop of constant current source current and generation,
And it performs mathematical calculations and obtains DC resistance.
The short-circuit impedance test module carries out sampling sum number by the way that alternating voltage is injected test item, to voltage and current
Wordization processing, and perform mathematical calculations and obtain short-circuit impedance value.
The load ratio bridging switch test module by load ratio bridging switch action carry out high speed signal acquisition, from
And calculate transition resistance waveform and time.
The no-load voltage ratio group test module by acquiring the voltage signal of on high-tension side voltage signal and low-pressure side respectively, meter
Calculate the change when group value of transformer.
The configuration of the present invention is simple, reasonable design, easy operation, can meet simultaneously test item D.C. resistance, no-load voltage ratio group,
The accurate measurement that short-circuit impedance, load ratio bridging switch are tested.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the function logic frame chart of the present invention.
Fig. 2 is the test wiring diagram of the present invention.
Fig. 3 is the control principle block diagram of the present invention.
1. man-machine interactive system, 2. embedded Control mainboard, 3. direct resistance metering module, 4. impedance test module 5. has load in Fig. 3
9. constant-current control module of test module 6. no-load voltage ratio test module, 7. data acquisition module, 8. current sample, 10. power management 11. is counted
Calculate module
Specific implementation mode：
In order to make reached purpose of the present invention and effect be easy to understand, with reference to being specifically illustrating, this is expanded on further
Invention.
The present invention has automatic measurement pattern and manual measurement mode.When selecting automatic measurement pattern, embedded master
Plate exports order to four Implement of Function Module corresponding functions respectively, can accomplish continuous not thread-changing experiment, after the test by dividing
Analysis judgment module is compared to judge transformer test data using data as defined in respective digital electronic circuit and regulation
It is whether qualified.When measuring, after instrument booting, operating personnel select manual measurement mode or instrument by 1 man-machine interactive system
Automatic measurement pattern, the manipulation instruction that 2 embedded main boards obtain the publication of 1 man-machine interactive system controls corresponding function, by right
The serial communication answered starts corresponding function module, and test result is fed back on the display screen of 1 human-computer interaction interface, for number
According to record and printing.
When man-machine manipulation 1 selects the instruction of direct resistance metering, embedded Control mainboard 2 configures the output of serial ports 1 and orders to straight
Test module is hindered, test module starts constant-current control circuit and enters charge circuit, and direct current is directly sent to test item.It is then inserted into
Formula control mainboard carries out logical signal sampling and performs mathematical calculations to obtain DC resistance to voltage and current.It is put when being completed
Electric protection module works, and the induced voltage release of winding is finished.
When man-machine manipulation 1 selects the instruction of testing impedance, embedded Control mainboard 2 configures the output order of serial ports 2 and extremely hinders
Test AC signal is sent to test item by anti-test module, the control of module startup power supply.Formula control mainboard is then inserted into voltage
Electric current carries out logical signal sampling and performs mathematical calculations to obtain transformer alternating impedance value.
When man-machine manipulation 1 selects to have the instruction for carrying and testing, embedded Control mainboard 2 configures the output order of serial ports 3 to having
Test module is carried, module starts three-phase constant-current control and test AC signal is sent to test item, waits for the dynamic of load ratio bridging switch
Make.At the same time the signal acquisition for carrying out high speed, to calculate transition resistance waveform and time.
When the instruction that man-machine manipulation 1 selects no-load voltage ratio to test, embedded Control mainboard 2 configures the output of serial ports 4 order to change
Than test module, test AC signal is sent to test item by the control of module startup power supply.On high-tension side voltage signal is acquired respectively
With the voltage signal of low-pressure side, the change of transformer when group value is then calculated.
Automatic measurement pattern provides pause test, continues test, reset discharge function.
The foregoing describe the application methods and advantage of the present invention.It should be understood by those skilled in the art that not departing from this
Under the premise of invention thinking and range, the present invention can also carry out several improvement and polishing, these are improved and polishing is regarded as
Protection scope of the present invention.The scope of the present invention is defined by the appended claims and its equivalents.
Claims (5)
1. transformer routine test comprehensive test device, in an equipment, by four class transformer routine test projects --- it is straight
Leakage resistance, no-load voltage ratio group, short-circuit impedance, load ratio bridging switch test gather together, it is characterized in that：Transformer synthesis test dress
It sets and is tested by four test modules and is controlled for D.C. resistance, no-load voltage ratio group, short-circuit impedance, load ratio bridging switch by serial ports,
Switch when can be for different application；
Four test modules include D.C. resistance test module, short-circuit impedance test module, load ratio bridging switch test module, become
Compare test module.
2. according to the transformer routine test comprehensive test device described in claim 1, it is characterised in that：The D.C. resistance
Test module is straight by carrying out accurate modulus sampling to the voltage drop of constant current source current and generation, and performing mathematical calculations to obtain
Galvanic electricity resistance value.
3. according to the transformer routine test comprehensive test device described in claim 1, it is characterised in that：The short-circuit impedance
Test module carries out sampling and digitized processing, line number of going forward side by side by the way that alternating voltage is injected test item, to voltage and current
Operation obtains short-circuit impedance value.
4. according to the transformer routine test comprehensive test device described in claim 1, it is characterised in that：The loaded tap-off
Switch testing module is by the signal acquisition for acting progress high speed to load ratio bridging switch, to calculate transition resistance waveform
And the time.
5. according to the transformer routine test comprehensive test device described in claim 1, it is characterised in that：The no-load voltage ratio group
Test module calculates the change of transformer when group by acquiring the voltage signal of on high-tension side voltage signal and low-pressure side respectively
It is not worth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810019732.3A CN108333448A (en) | 2018-01-09 | 2018-01-09 | Transformer routine test comprehensive test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810019732.3A CN108333448A (en) | 2018-01-09 | 2018-01-09 | Transformer routine test comprehensive test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108333448A true CN108333448A (en) | 2018-07-27 |
Family
ID=62924615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810019732.3A Pending CN108333448A (en) | 2018-01-09 | 2018-01-09 | Transformer routine test comprehensive test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108333448A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108845218A (en) * | 2018-09-19 | 2018-11-20 | 天津凌英科技有限公司 | A kind of coupling transformer dynamic property detector |
| CN108957194A (en) * | 2018-08-03 | 2018-12-07 | 国网冀北电力有限公司唐山供电公司 | A kind of the combined test stand structure and its test method of distribution transformer |
| CN109406908A (en) * | 2018-12-10 | 2019-03-01 | 国网江苏省电力有限公司检修分公司 | One kind repairing the integrated test platform of examination |
| CN110927411A (en) * | 2019-10-16 | 2020-03-27 | 国网浙江省电力有限公司金华供电公司 | Auxiliary wiring device for transformer test |
| CN112433105A (en) * | 2020-10-27 | 2021-03-02 | 吴江变压器有限公司 | Transformer semi-finished product transformation ratio measuring method |
| CN113253022A (en) * | 2021-04-30 | 2021-08-13 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Testing device and method for internal transient voltage transmission rule of extra-high voltage converter transformer |
| CN113625078A (en) * | 2021-08-02 | 2021-11-09 | 国网河南省电力公司技能培训中心 | Method and system for identifying transition resistance in short-circuit fault of power system |
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| CN201732127U (en) * | 2010-05-19 | 2011-02-02 | 武汉中瑞星电气有限责任公司 | Comprehensive testing device for transformer |
| CN103063924A (en) * | 2012-12-27 | 2013-04-24 | 江苏省电力公司电力科学研究院 | Vehicle-mounted integral three-phase direct-current resistance and transformation ratio and load comprehensive testing device and method |
| CN103196491A (en) * | 2013-03-22 | 2013-07-10 | 广州供电局有限公司 | Transformer integral comprehensive detection device |
| CN203479934U (en) * | 2013-09-05 | 2014-03-12 | 国家电网公司 | Vehicle-mounted integrated testing system for transformer |
| CN103941122A (en) * | 2014-04-04 | 2014-07-23 | 国家电网公司 | Multifunctional transformer comprehensive testing device |
| CN107894546A (en) * | 2017-12-29 | 2018-04-10 | 武汉南瑞高电科技有限公司 | Transformer synthesis test system |
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Patent Citations (6)
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| CN201732127U (en) * | 2010-05-19 | 2011-02-02 | 武汉中瑞星电气有限责任公司 | Comprehensive testing device for transformer |
| CN103063924A (en) * | 2012-12-27 | 2013-04-24 | 江苏省电力公司电力科学研究院 | Vehicle-mounted integral three-phase direct-current resistance and transformation ratio and load comprehensive testing device and method |
| CN103196491A (en) * | 2013-03-22 | 2013-07-10 | 广州供电局有限公司 | Transformer integral comprehensive detection device |
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| CN107894546A (en) * | 2017-12-29 | 2018-04-10 | 武汉南瑞高电科技有限公司 | Transformer synthesis test system |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957194A (en) * | 2018-08-03 | 2018-12-07 | 国网冀北电力有限公司唐山供电公司 | A kind of the combined test stand structure and its test method of distribution transformer |
| CN108957194B (en) * | 2018-08-03 | 2024-04-16 | 国网冀北电力有限公司唐山供电公司 | Comprehensive test bench structure of distribution transformer and test method thereof |
| CN108845218A (en) * | 2018-09-19 | 2018-11-20 | 天津凌英科技有限公司 | A kind of coupling transformer dynamic property detector |
| CN109406908A (en) * | 2018-12-10 | 2019-03-01 | 国网江苏省电力有限公司检修分公司 | One kind repairing the integrated test platform of examination |
| CN109406908B (en) * | 2018-12-10 | 2023-11-24 | 国网江苏省电力有限公司检修分公司 | Repair and test integrated test platform |
| CN110927411A (en) * | 2019-10-16 | 2020-03-27 | 国网浙江省电力有限公司金华供电公司 | Auxiliary wiring device for transformer test |
| CN112433105A (en) * | 2020-10-27 | 2021-03-02 | 吴江变压器有限公司 | Transformer semi-finished product transformation ratio measuring method |
| CN112433105B (en) * | 2020-10-27 | 2024-02-09 | 吴江变压器有限公司 | Transformer semi-finished product transformation ratio measuring method |
| CN113253022A (en) * | 2021-04-30 | 2021-08-13 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Testing device and method for internal transient voltage transmission rule of extra-high voltage converter transformer |
| CN113625078A (en) * | 2021-08-02 | 2021-11-09 | 国网河南省电力公司技能培训中心 | Method and system for identifying transition resistance in short-circuit fault of power system |
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Application publication date: 20180727 |
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