CN106054005A - Automatic test system for temperature rise test of transformer - Google Patents
Automatic test system for temperature rise test of transformer Download PDFInfo
- Publication number
- CN106054005A CN106054005A CN201610632411.1A CN201610632411A CN106054005A CN 106054005 A CN106054005 A CN 106054005A CN 201610632411 A CN201610632411 A CN 201610632411A CN 106054005 A CN106054005 A CN 106054005A
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- Prior art keywords
- microprocessor
- test
- module
- power supply
- transformer
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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
- G01R31/003—Environmental or reliability tests
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention relates to an automatic test system for temperature rise test of a transformer. The automatic test system is characterized by comprising a microprocessor, a measurement module, a power control module, a wiring manner switching module and a storage and transmission module; the measurement module measures voltage and current values of an experimental power supply and oil temperature of the transformer in real time and transmits the voltage and current values and the oil temperature to the microprocessor; under control of the microprocessor, the power control module adjusts output of the experimental power supply or cut off the experimental power supply; and the wiring manner switching module is connected with the microprocessor, and is controlled, by the microprocessor, to carry out rapid switching between a short-circuit line and a DC resistance test line. According to the invention, automatic temperature rise test of the transformer can be realized, the microprocessor controls links in the test automatically via built-in computer programs and judgment logics, the test reliability and accuracy are ensured, influence of manual factors is eliminated, the workload of test staff is greatly reduced, operation is simple, and the test efficiency can be improved effectively.
Description
Technical field
The invention belongs to transformer high-voltage experimental technique field, especially a kind of transformator temperature rise test tests system automatically
System.
Background technology
When transformator runs, internal temperature is too high, can cause insulant accelerated ageing, have a strong impact on stablizing of transformator
Run and service life.Temperature rise test is i.e. by analogue transformer oepration at full load state, to check whether internal temperature surpasses
Overtemperature limit value.When laboratory carries out transformator temperature rise test, general employing low-voltage short-circuiting method simulation oepration at full load state,
Will step down side short circuit, high-pressure side apply specific voltage x current, after transformator reaches thermal balance, cut off the electricity supply also
Quickly measure the resistance value of winding, thus obtain the mean temperature of winding.In transformer temperature elevation process, due to transformator
Parameter varies with temperature, and causes test voltage electric current to there is certain fluctuation, needs testing crew to pay close attention to trystate at any time also
Constantly regulation input voltage and input current value.In addition it is also necessary to testing crew time recording temperature of oil in transformer, and whether judge transformator
Reach thermal balance.Owing to the temperature-rise period time is longer, therefore testing crew workload is relatively big, and subjective factors is more, sometimes
Affect accuracy and the concordance of result of the test.After transformator reaches thermal balance and cuts off the electricity supply, testing crew is needed by hand will
The short-circuit line (row) of low-pressure side is removed, and reconnects D.C. resistance p-wire, measures the resistance value of winding.Good for ensureing short-circuit condition
Good, it is stronger that general short-circuit line (row) is connected ratio with transformer terminal, and manual demolition is the most relatively time-consuming.If cut off the electricity supply with
Measure the time interval between resistance value long, then transformer temperature declines more, can affect the accuracy of winding temperature conversion.
Even, when connecting D.C. resistance p-wire, loose contact can affect resistivity measurements, causes the failure of temperature rise test.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of reasonable in design, stable and reliable for performance, accurate
The transformator temperature rise test Auto-Test System that property is high and easy to use.
The present invention solves it and technical problem is that and take techniques below scheme to realize:
A kind of transformator temperature rise test Auto-Test System, including microprocessor, measurement module, energy supply control module, connects
Line mode handover module and storage transport module, described measurement module is connected with experiment power supply and transformator, measures reality in real time
The magnitude of voltage in electrical verification source, current value and temperature of oil in transformer also send microprocessor to；Described energy supply control module and test electricity
Source is connected and regulates the output size of experiment power supply under control of the microprocessor or cut off experiment power supply；The described mode of connection
Handover module is connected with microprocessor and carries out the quick of short-circuit line and D.C. resistance p-wire under control of the microprocessor
Switching；Described storage transport module is connected with microprocessor and realizes measurement data storage function and data upload function.
Advantages of the present invention and good effect be:
The present invention is by microprocessor and measurement module, energy supply control module, mode of connection handover module and storage transmission
Module is connected and realizes the autorun of transformator temperature rise test, and microprocessor can automatically control each ring in test
Joint, testing crew only needs one-key start test procedure, it is not necessary to test is carried out any intervention, and microprocessor is by built-in meter
Calculation machine program and decision logic, it is ensured that the reliability of test and accuracy, eliminate the impact of anthropic factor, and greatly subtract
Lack the workload of testing crew, easy and simple to handle, test efficiency can be effectively improved.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the embodiment of the present invention is further described:
A kind of transformator temperature rise test Auto-Test System, as it is shown in figure 1, include microprocessor, measurement module, power supply control
Molding block, mode of connection handover module and storage transport module, described measurement module is connected with microprocessor and will survey in real time
The test voltage of amount, test current value, temperature of oil in transformer send microprocessor to；Energy supply control module is connected with microprocessor
And regulate the output size of experiment power supply under control of the microprocessor；Described mode of connection handover module is connected with microprocessor
Connect and carry out the quick of short-circuit line (row) and D.C. resistance p-wire under control of the microprocessor；Described storage transport module with
Microprocessor is connected and realizes measurement data storage function and data upload function.
Native system is capable of the autorun of transformator temperature rise test, in temperature elevation process, and measurement module
Experiment with measuring voltage and current value in real time, and measurement data is supplied to microprocessor.Microprocessor by comparing with setting value,
Judge the amplitude of accommodation of voltage x current, and send corresponding control instruction to energy supply control module.Energy supply control module is received micro-
After the instruction of processor, the output size of regulation experiment power supply, it is ensured that test voltage and current value are the least near setting value
In the range of fluctuate.Additionally, measurement module also Timing measurement temperature of oil in transformer, and it is supplied to microprocessor.Microprocessor is by front
The situation of change of rear twice oil temperature, it is judged that whether transformator reaches thermal balance.When transformer temperature is stablized, microprocessor is to electricity
Source control module sends the instruction cut off the electricity supply, and triggers mode of connection handover module, realizes short-circuit line by motor drive mechanism
(row) is switched fast with D.C. resistance p-wire.After mode of connection switching, measurement module starts to measure DC resistance,
Resistance value is converted into winding temperature by microprocessor, and judges that result of the test is the most qualified.Whole surveys during temperature rise test
Amount data can be stored in memory by storage transport module, and utilizes Wi-Fi to be transferred to test backstage, convenient examination
The personnel that test are in the place monitoring test process away from testing ground.
It is emphasized that embodiment of the present invention is illustrative rather than determinate, bag the most of the present invention
Include the embodiment being not limited to described in detailed description of the invention, every by those skilled in the art according to technical scheme
Other embodiments drawn, also belong to the scope of protection of the invention.
Claims (1)
1. a transformator temperature rise test Auto-Test System, it is characterised in that: include microprocessor, measurement module, power supply control
Molding block, mode of connection handover module and storage transport module, described measurement module is connected with experiment power supply and transformator, real
Time the magnitude of voltage of experiments of measuring power supply, current value and temperature of oil in transformer send microprocessor to；Described energy supply control module
It is connected with experiment power supply and regulates the output size of experiment power supply under control of the microprocessor or cut off experiment power supply；Described
Mode of connection handover module is connected with microprocessor and carries out short-circuit line under control of the microprocessor and tests with D.C. resistance
Being switched fast of line；Described storage transport module is connected with microprocessor and realizes passing on Gong in measurement data storage function and data
Energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610632411.1A CN106054005A (en) | 2016-08-03 | 2016-08-03 | Automatic test system for temperature rise test of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610632411.1A CN106054005A (en) | 2016-08-03 | 2016-08-03 | Automatic test system for temperature rise test of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106054005A true CN106054005A (en) | 2016-10-26 |
Family
ID=57197504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610632411.1A Pending CN106054005A (en) | 2016-08-03 | 2016-08-03 | Automatic test system for temperature rise test of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106054005A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443096A (en) * | 2016-11-23 | 2017-02-22 | 国网辽宁省电力有限公司电力科学研究院 | Full automatic temperature rise test low-voltage big-current generator and control method thereof |
| CN107144758A (en) * | 2017-05-25 | 2017-09-08 | 云南电网有限责任公司电力科学研究院 | The test method that a kind of fuel factor influences on transformer anti-short circuit capability |
| CN110531122A (en) * | 2019-09-24 | 2019-12-03 | 国网重庆市电力公司电力科学研究院 | A kind of transformer temperature rise test equipment and its wiring control system |
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| KR100796023B1 (en) * | 2006-06-02 | 2008-01-21 | 한국단자공업 주식회사 | Method and system for testing of switching element |
| CN102565569A (en) * | 2011-11-17 | 2012-07-11 | 东莞市广安电气检测中心有限公司 | Full-automatic power transformer temperature rise test system |
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| CN105807217A (en) * | 2016-03-14 | 2016-07-27 | 国网浙江宁波市鄞州区供电公司 | Transformer direct-current resistance and on-load tap-changer integrated tester |
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2016
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| CN102565569A (en) * | 2011-11-17 | 2012-07-11 | 东莞市广安电气检测中心有限公司 | Full-automatic power transformer temperature rise test system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443096A (en) * | 2016-11-23 | 2017-02-22 | 国网辽宁省电力有限公司电力科学研究院 | Full automatic temperature rise test low-voltage big-current generator and control method thereof |
| CN107144758A (en) * | 2017-05-25 | 2017-09-08 | 云南电网有限责任公司电力科学研究院 | The test method that a kind of fuel factor influences on transformer anti-short circuit capability |
| CN107144758B (en) * | 2017-05-25 | 2020-02-07 | 云南电网有限责任公司电力科学研究院 | Method for testing influence of thermal effect on short-circuit resistance of transformer |
| CN110531122A (en) * | 2019-09-24 | 2019-12-03 | 国网重庆市电力公司电力科学研究院 | A kind of transformer temperature rise test equipment and its wiring control system |
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Application publication date: 20161026 |