CN108871602A - A kind of method of automatic measurement dry-type distribution transformer temperature rise test overall process - Google Patents
A kind of method of automatic measurement dry-type distribution transformer temperature rise test overall process Download PDFInfo
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- CN108871602A CN108871602A CN201810785814.9A CN201810785814A CN108871602A CN 108871602 A CN108871602 A CN 108871602A CN 201810785814 A CN201810785814 A CN 201810785814A CN 108871602 A CN108871602 A CN 108871602A
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- distribution transformer
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- type distribution
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- temperature rise
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- 238000012360 testing method Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000005259 measurement Methods 0.000 title claims abstract description 15
- 230000008569 process Effects 0.000 title claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 29
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 19
- 238000004804 winding Methods 0.000 claims description 18
- 230000002159 abnormal effect Effects 0.000 claims description 11
- 230000001050 lubricating effect Effects 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 7
- 238000004321 preservation Methods 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims 1
- 238000009434 installation Methods 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000005619 thermoelectricity Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The present invention relates to a kind of methods of automatic measurement dry-type distribution transformer temperature rise test overall process, including industrial personal computer, temperature polling instrument, instrument for measuring DC resistance and contactor, the power transmission to dry-type distribution transformer is realized by the conducting of contactor, and the power-off to dry-type distribution transformer is realized by the disconnection of contactor；Advantages of the present invention：Record the temperature variations and resistance variations situation during test in real time by industrial personal computer, line temperature rise test is disconnected compared to conventional manual, eliminate the manual intervention in test, test process and test process more automated intelligent, it has liberated manpower and has improved work efficiency, guarantee the success rate and stability of temperature rise test, and the power transmission and power-off to dry-type distribution transformer are realized by contactor, the temperature of dry-type distribution transformer can be monitored automatically in real time in transmission process, and automatically powered off to being able to achieve in the case of temperature anomaly.
Description
Technical field
The present invention relates to a kind of methods of automatic measurement dry-type distribution transformer temperature rise test overall process.
Background technique
Alternating voltage and electric current are converted according to the law of electromagnetic induction and transmit alternating current in distribution transformer assignment electric system
A kind of static electric appliance of energy, to ensure that power grid essential safety and equipment are firm reliable, the sampling observation of networking goods and materials is that Utilities Electric Co. carries out
The important means of distribution net equipment quality control work.Currently, each annual distribution transformer amount of purchase of provincial electric power company is up to 12000
More than, by 10% sampling observation rate sampling observation amount up to more than 1200 platforms, this requires detection unit monthly test is measured variable need to be up to more than 100 platforms.
And in distribution transforming sampling examination, temperature rise test time-consuming longest, and dry-type distribution transformer needs 23~26 hours, temperature rise test category
Type approval test in distribution transformer test, it is to verify whether distribution transformer design structure and cooling system close
Reason is the important tests for examining distribution transformer service life and safe operation.At this stage to distribution transformer temperature rise test
There are many research, but focus primarily upon technological design and uncertainty calculation, and existing temperature rise test is completed to divide by testing staff
Analysis calculates, and substantially increases the investment of manpower, and tests and be easy by human intervention, cause entire test efficiency low and test at
Power is low.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of automatic measurement distribution transformer temperature rise test overall process
Method solves the technical problem that the test method of existing measurement distribution transformer temperature rise causes test efficiency low.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following technical solutions：A kind of automatic measurement dry type
The method of distribution transformer temperature rise test overall process, including industrial personal computer, temperature polling instrument, instrument for measuring DC resistance and contactor,
The temperature polling instrument and instrument for measuring DC resistance are connected with industrial personal computer, acquire dry-type distribution transformer by temperature polling instrument
Temperature and be transmitted to industrial personal computer storage and analysis, pass through instrument for measuring DC resistance acquire dry-type distribution transformer resistance and biography
Industrial personal computer storage and analysis are transported to, the power transmission to dry-type distribution transformer is realized by the conducting of contactor, passes through contactor
The power-off realized to dry-type distribution transformer is disconnected, is successively included the following steps:
Step 1：It arranges the experimental enviroment of dry-type distribution transformer, and carries out dry-type distribution transformer under unloaded environment
Test connection；
Step 2：Voltage rating, rated current and the Protection parameters of dry-type distribution transformer are set by industrial personal computer, and
The cold resistance of dry-type distribution transformer is measured by instrument for measuring DC resistance and is recorded by industrial personal computer；
Step 3：By contactor to dry-type distribution transformer power transmission, apply voltage rating, and automatically controls voltage, and
The temperature of each temperature measuring point is recorded every 10min, while keeping the real time monitoring of abnormal conditions；
Step 4：Whether the dry-type distribution transformer after three power transmission of obtaining step there is exception, works as dry-type distribution transformer
When not occurring abnormal, then five are entered step, when parameter protection or when the temperature is excessively high occurs in dry-type distribution transformer, then terminates to try
It tests：
Step 5：Power transmission is kept to dry-type distribution transformer；
Step 6：The temperature rise variation of the winding and iron core of dry-type distribution transformer after five power transmission of obtaining step, works as winding
When temperature rise variation with iron core is less than 1K/h, then seven are entered step, when the temperature rise of winding and iron core variation is greater than 1K/h, then returned
Return step 5；
Step 7：It is powered off by contactor to dry-type distribution transformer, measures the thermal resistance of high and low pressure side under unloaded environment,
And record preservation is carried out by industrial personal computer；
Step 8：Dry-type distribution transformer after step 7 is powered off carries out the test connection under load environment；
Step 9：Power transmission is kept to dry-type distribution transformer, applies rated current, and automatically control rated current, and is every
The temperature of each temperature measuring point is recorded every 10min, while keeping the real time monitoring of abnormal conditions；
Step 10：Whether the dry-type distribution transformer after obtaining step nine there is exception, when distribution transformer does not occur
When abnormal, then 11 are entered step, when parameter protection or when the temperature is excessively high occurs in distribution transformer, then terminates to test；
Step 11：Power transmission is saved to dry-type distribution transformer；
Step 12：The temperature rise variation of the winding and iron core of dry-type distribution transformer after 11 power transmission of obtaining step, when
When the temperature rise variation of winding and iron core is less than 1K/h, then 13 are entered step, when the temperature rise variation of winding and iron core is greater than 1K/h
When, then return step 12；
Step 13：It is powered off by contactor to dry-type distribution transformer, the thermoelectricity of high and low pressure side under measurement load environment
Resistance, and record preservation is carried out by industrial personal computer, and temperature rise result is calculated and audited by industrial personal computer.
Preferably, the experimental enviroment in step 1 includes temperature measuring point and lubricating cup, and the temperature measuring point setting becomes in dry-type distribution
The top of dry-type distribution transformer is arranged in the bottom end of depressor, the lubricating cup.
Preferably, the contactor is connected by soft copper conducting wire with dry-type distribution transformer.
In conclusion advantages of the present invention：1. recording the temperature variations during test in real time by industrial personal computer
With resistance variations situation, line temperature rise test is disconnected compared to conventional manual, this test method eliminates artificial dry in test
In advance, process and test process more automated intelligent are tested, manpower has been liberated and has improved work efficiency, guaranteed the success of temperature rise test
Rate and stability, and the power transmission and power-off to dry-type distribution transformer are realized by contactor, it can be in real time in transmission process
The temperature of automatic monitoring dry-type distribution transformer, and automatically powered off to being able to achieve in the case of temperature anomaly, and judge automatically temperature rise
It is whether stable, thermal resistance finally can be automatically powered off and be measured, temperature rise calculated result is obtained and provides conclusion (of pressure testing)；
2. temperature measuring point and lubricating cup can quickly obtain the real time temperature during dry-type distribution transformer temperature rise, pass through analysis
The temperature change of dry-type distribution transformer bottom end and top can improve the accuracy rate of detection；
3. soft copper conducting wire can ensure that the reliability that contactor is connect with dry-type distribution transformer, and not by installation environment and angle
The limitation of degree, it is adaptable, it is easy for installation.
Specific embodiment
A kind of method of automatic measurement dry-type distribution transformer temperature rise test overall process, including industrial personal computer, temperature polling instrument,
Instrument for measuring DC resistance and contactor, the temperature polling instrument and instrument for measuring DC resistance are connected with industrial personal computer, pass through temperature
The temperature of logging acquisition dry-type distribution transformer is simultaneously transmitted to industrial personal computer storage and analysis, is acquired by instrument for measuring DC resistance
The resistance of dry-type distribution transformer is simultaneously transmitted to industrial personal computer storage and analysis, is realized by the conducting of contactor to dry-type distribution and is become
The power transmission of depressor is realized the power-off to dry-type distribution transformer by the disconnection of contactor, is successively included the following steps:
Step 1：It arranges the experimental enviroment of dry-type distribution transformer, and carries out dry-type distribution transformer under unloaded environment
Test connection；
Step 2：Voltage rating, rated current and the Protection parameters of dry-type distribution transformer are set by industrial personal computer, and
The cold resistance of dry-type distribution transformer is measured by instrument for measuring DC resistance and is recorded by industrial personal computer；
Step 3：By contactor to dry-type distribution transformer power transmission, apply voltage rating, and automatically controls voltage, and
The temperature of each temperature measuring point is recorded every 10min, while keeping the real time monitoring of abnormal conditions；
Step 4：Whether the dry-type distribution transformer after three power transmission of obtaining step there is exception, works as dry-type distribution transformer
When not occurring abnormal, then five are entered step, when parameter protection or when the temperature is excessively high occurs in dry-type distribution transformer, then terminates to try
It tests：
Step 5：Power transmission is kept to dry-type distribution transformer；
Step 6：The temperature rise variation of the winding and iron core of dry-type distribution transformer after five power transmission of obtaining step, works as winding
When temperature rise variation with iron core is less than 1K/h, then seven are entered step, when the temperature rise of winding and iron core variation is greater than 1K/h, then returned
Return step 5；
Step 7：It is powered off by contactor to dry-type distribution transformer, measures the thermal resistance of high and low pressure side under unloaded environment,
And record preservation is carried out by industrial personal computer；
Step 8：Dry-type distribution transformer after step 7 is powered off carries out the test connection under load environment；
Step 9：Power transmission is kept to dry-type distribution transformer, applies rated current, and automatically control rated current, and is every
The temperature of each temperature measuring point is recorded every 10min, while keeping the real time monitoring of abnormal conditions；
Step 10：Whether the dry-type distribution transformer after obtaining step nine there is exception, when distribution transformer does not occur
When abnormal, then 11 are entered step, when parameter protection or when the temperature is excessively high occurs in distribution transformer, then terminates to test；
Step 11：Power transmission is saved to dry-type distribution transformer；
Step 12：The temperature rise variation of the winding and iron core of dry-type distribution transformer after 11 power transmission of obtaining step, when
When the temperature rise variation of winding and iron core is less than 1K/h, then 13 are entered step, when the temperature rise variation of winding and iron core is greater than 1K/h
When, then return step 12；
Step 13：It is powered off by contactor to dry-type distribution transformer, the thermoelectricity of high and low pressure side under measurement load environment
Resistance, and record preservation is carried out by industrial personal computer, and temperature rise result is calculated and audited by industrial personal computer.
In addition, the experimental enviroment in step 1 includes temperature measuring point and lubricating cup, the temperature measuring point is arranged in dry-type distribution transformation
The top of dry-type distribution transformer is arranged in the bottom end of device, the lubricating cup, can quickly obtain dry-type distribution transformer temperature rise
Real time temperature in journey can improve the accuracy rate of detection by the temperature change of analysis dry-type distribution transformer bottom end and top,
The contactor is connected by soft copper conducting wire with dry-type distribution transformer, and soft copper conducting wire can ensure that contactor and dry-type distribution transformation
The reliability of device connection, and do not limited by installation environment and angle, it is adaptable, it is easy for installation.
In addition to above preferred embodiment, there are other embodiments of the invention, and those skilled in the art can be according to this
Invention makes various changes and modifications, and as long as it does not depart from the spirit of the invention, should belong to appended claims of the present invention and determines
The range of justice.
Claims (3)
1. a kind of method of automatic measurement dry-type distribution transformer temperature rise test overall process, it is characterised in that：Including industrial personal computer, temperature
Degree logging, instrument for measuring DC resistance and contactor, the temperature polling instrument and instrument for measuring DC resistance are connected with industrial personal computer,
The temperature of dry-type distribution transformer is acquired by temperature polling instrument and is transmitted to industrial personal computer storage and analysis, is surveyed by D.C. resistance
The resistance of examination instrument acquisition dry-type distribution transformer is simultaneously transmitted to industrial personal computer storage and analysis, is realized by the conducting of contactor to dry
The power transmission of formula distribution transformer realizes the power-off to dry-type distribution transformer by the disconnection of contactor, successively includes following step
Suddenly:
Step 1：It arranges the experimental enviroment of dry-type distribution transformer, and carries out the examination of dry-type distribution transformer under unloaded environment
Test wiring；
Step 2：Voltage rating, rated current and the Protection parameters of dry-type distribution transformer are set by industrial personal computer, and are passed through
The cold resistance of instrument for measuring DC resistance measurement dry-type distribution transformer is simultaneously recorded by industrial personal computer；
Step 3：By contactor to dry-type distribution transformer power transmission, apply voltage rating, and automatically controls voltage, and every
10min records the temperature of each temperature measuring point, while keeping the real time monitoring of abnormal conditions；
Step 4：Whether the dry-type distribution transformer after three power transmission of obtaining step there is exception, when dry-type distribution transformer does not have
When occurring abnormal, then five are entered step, when parameter protection or when the temperature is excessively high occurs in dry-type distribution transformer, then terminates to test：
Step 5：Power transmission is kept to dry-type distribution transformer；
Step 6：The temperature rise variation of the winding and iron core of dry-type distribution transformer after five power transmission of obtaining step, when winding and iron
When the temperature rise variation of the heart is less than 1K/h, then seven are entered step, when the temperature rise of winding and iron core variation is greater than 1K/h, then returns to step
Rapid five；
Step 7：It is powered off by contactor to dry-type distribution transformer, measures the thermal resistance of high and low pressure side under unloaded environment, and led to
It crosses industrial personal computer and carries out record preservation；
Step 8：Dry-type distribution transformer after step 7 is powered off carries out the test connection under load environment；
Step 9：Power transmission is kept to dry-type distribution transformer, applies rated current, and automatically control rated current, and every
10min records the temperature of each temperature measuring point, while keeping the real time monitoring of abnormal conditions；
Step 10：Whether the dry-type distribution transformer after obtaining step nine there is exception, when exception does not occur in distribution transformer
When, then 11 are entered step, when parameter protection or when the temperature is excessively high occurs in distribution transformer, then terminates to test；
Step 11：Power transmission is saved to dry-type distribution transformer；
Step 12：The temperature rise variation of the winding and iron core of dry-type distribution transformer after 11 power transmission of obtaining step, works as winding
When temperature rise variation with iron core is less than 1K/h, then 13 are entered step, when the temperature rise of winding and iron core variation is greater than 1K/h, then
Return step 12；
Step 13：It is powered off by contactor to dry-type distribution transformer, the thermal resistance of high and low pressure side under measurement load environment, and
Record preservation is carried out by industrial personal computer, and temperature rise result is calculated and audited by industrial personal computer.
2. a kind of method of automatic measurement dry-type distribution transformer temperature rise test overall process according to claim 1, special
Sign is：Experimental enviroment in step 1 includes temperature measuring point and lubricating cup, and the bottom of dry-type distribution transformer is arranged in the temperature measuring point
The top of dry-type distribution transformer is arranged in end, the lubricating cup.
3. a kind of method of automatic measurement dry-type distribution transformer temperature rise test overall process according to claim 1, special
Sign is：The contactor is connected by soft copper conducting wire with dry-type distribution transformer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810785814.9A CN108871602A (en) | 2018-07-17 | 2018-07-17 | A kind of method of automatic measurement dry-type distribution transformer temperature rise test overall process |
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| CN201810785814.9A CN108871602A (en) | 2018-07-17 | 2018-07-17 | A kind of method of automatic measurement dry-type distribution transformer temperature rise test overall process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111273117A (en) * | 2020-04-03 | 2020-06-12 | 国家电网有限公司 | Method and device for shortening no-load temperature rise test time of dry-type transformer |
| CN114113836A (en) * | 2021-11-15 | 2022-03-01 | 中煤科工集团沈阳研究院有限公司 | Temperature rise experiment device and method for isolation transformer |
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| CN106841875A (en) * | 2017-03-01 | 2017-06-13 | 国家电网公司 | Three-Phase Distribution Transformers temperature rise test system and method based on alternating low frequency heating |
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2018
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Patent Citations (2)
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| KR20170014358A (en) * | 2015-07-29 | 2017-02-08 | 엘에스산전 주식회사 | Temperature-rise test automation system and method for electric power equipment using prediction algorithm |
| CN106841875A (en) * | 2017-03-01 | 2017-06-13 | 国家电网公司 | Three-Phase Distribution Transformers temperature rise test system and method based on alternating low frequency heating |
Non-Patent Citations (1)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111273117A (en) * | 2020-04-03 | 2020-06-12 | 国家电网有限公司 | Method and device for shortening no-load temperature rise test time of dry-type transformer |
| CN111273117B (en) * | 2020-04-03 | 2022-03-29 | 国家电网有限公司 | Method and device for shortening no-load temperature rise test time of dry-type transformer |
| CN114113836A (en) * | 2021-11-15 | 2022-03-01 | 中煤科工集团沈阳研究院有限公司 | Temperature rise experiment device and method for isolation transformer |
| CN114113836B (en) * | 2021-11-15 | 2023-10-27 | 中煤科工集团沈阳研究院有限公司 | Temperature rise experimental device and method for isolation transformer |
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Application publication date: 20181123 |