CN108732430A - A kind of twin voltage detection method of transformer cartridge type umber of turn - Google Patents
A kind of twin voltage detection method of transformer cartridge type umber of turn Download PDFInfo
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- CN108732430A CN108732430A CN201810498218.2A CN201810498218A CN108732430A CN 108732430 A CN108732430 A CN 108732430A CN 201810498218 A CN201810498218 A CN 201810498218A CN 108732430 A CN108732430 A CN 108732430A
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- low pressure
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 title claims abstract description 14
- 238000004804 winding Methods 0.000 claims abstract description 41
- 238000005259 measurement Methods 0.000 claims abstract description 19
- 238000012360 testing method Methods 0.000 claims abstract description 10
- 230000009466 transformation Effects 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000013142 basic testing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
Classifications
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transformers For Measuring Instruments (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses a kind of twin voltage detection methods of transformer cartridge type umber of turn, are as follows：Test voltage is changed to a 380V voltages are added in the side of transformer cartridge type winding, 0.2 grade of measurement voltmeter is accessed in the other side of transformer cartridge type winding；Transformer cartridge type winding once surveyed by voltmeter after acquisition primary side voltage V1, the acquisition secondary side voltage V2 after secondary actual measurement obtains ratio error；Compared with obtained ratio error is marked with national standard, but when measurement error value is more than specification mark, if when 0 positive errors of >, low pressure the number of turns lacks N the number of turns or the more i N of high pressure the number of turns；When 0 negative errors of <, the more N the number of turns of low pressure the number of turns or high pressure the number of turns lack i N the number of turns.Using the technical program, it is ensured that measuring accuracy, it is ensured that the safety of operation detection experiment, and ratio error can be obtained whether in prescribed limit by carrying out comparison with national standard, and can find out the position of transformer winding the number of turns mistake and numerical value are how many.
Description
Technical field
The present invention relates to a kind of twin voltage detection methods of transformer cartridge type umber of turn, are applied to transformer cartridge type winding
The technical field of the number of turns detection.
Background technology
The quality inspection of transformer is tested is divided into the major class such as delivery test, commissioning test and preventive trial by purposes, respectively
Major class includes that pilot project is in varying numbers, it is different to require.No-load voltage ratio experiment is that above-mentioned each major class experiment is required to the important of progress
Basic test project, one of no-load voltage ratio test objective are whether each umber of turn of detection transformer and voltage ratio are normal.
Conventional no-load voltage ratio experiment can only measure the error of winding or umber of turn ratio, not can determine that some specific winding
The number of turns error situation, including determination is which umber of turn is incorrect and the position of the number of turns mistake and numerical value are how many.And
It is to carry out the foundation of subsequent handling to be appropriately determined unqualified winding and its number of turns error situation, extremely important.The number of turns mistake at present
Finding out method mainly has false winding method, twin voltage table method and the number of turns testboard method.
So-called twin voltage table method is a voltage to be added in the side of transformer, then induce in other side measuring transformer
The voltage come, the error value of umber of turn is conversed by the voltage value measured.
There are following several respects disadvantages for this method.
（1）High-voltage mutual inductor etc. is introduced there are the equipment of high pressure electric shock hidden danger, test voltage is generally more than kilovolt, operation
It is dangerous high.
（2）Precision instrument is needed, and although used measuring instrument is all very accurate（0.2 step voltage table,
0.1 step voltage mutual inductor）, but accuracy of measurement cannot still meet the requirement of measurement.If in the most adverse case, this
A little errors are superpositions, and only device measuring error is exactly 0.5%, along with parallax may be more than just national standard defined
Permissible value, measuring accuracy it is difficult to ensure that.For this purpose, we design a kind of twin voltage detection method of transformer cartridge type umber of turn.
Invention content
To solve the defect of prior art, the invention discloses a kind of inspections of the twin voltage of transformer cartridge type umber of turn
Survey method.
The invention discloses a kind of twin voltage detection methods of transformer cartridge type umber of turn, are as follows：
S1, test voltage is changed to a 380V voltages are added in the side of transformer cartridge type winding, transformer cartridge type winding
0.2 grade of measurement voltmeter is accessed in the other side, and lower voltage can be obtained in this way, reduce the measurement range of measuring instrument in this way,
Measurement accuracy is improved, while also reducing operational danger；
S2, transformer cartridge type winding once surveyed by voltmeter after acquisition primary side voltage V1, the acquisition after secondary actual measurement
Single packet nominal transformation ratio of secondary side voltage V2, transformer are i, then can pass through calculating formula（1）Obtain ratio error；
S3, ratio error tolerance value are in GB1094.1-1996《Power transformer（Table 1）》Regulation ± 0.5%（Or resistance
Smaller in anti-1/10）, standard specified value is mainly the generic principles in view of transformer entire series, for distribution transformer
Device manufactures enterprise, and general manufactory the number of turns in coiling winding controls within 1 circle, and for 30kVA transformers
The ratio error of 1 circle of high pressure is 0.02%；
S4, again by the ratio error obtained in S2 in S3 national standard mark compared with, but when measurement error value be more than specification mark when,
Umber of turn occurs as soon as mistake, not can determine that high-voltage winding the number of turns is problematic or low pressure winding is problematic or the two all
It is problematic, then derived by being grouped to calculate as follows：
1）It is obtained by calculating formula (1)（2）, to obtain（3）, i.e. error the number of turns value of high-voltage winding；
2）By calculating formula（2）?（4）, to obtain,（5）, i.e. error the number of turns value of low pressure winding；
S5, therefore, can inversely be derived by the result of calculation numerical value obtained in S4：In the presence of ratio error, if high pressure
The number of turns problem, then high pressure the number of turns error value is the product with high pressure the number of turns;If low pressure the number of turns problem, then low pressure the number of turns error value is
It is reversed with the product of low pressure the number of turns.
Preferably, low pressure the number of turns of the transformer winding in the S4 is N circles, and high pressure the number of turns of transformer winding is distinguished
For i N circles.
Preferably, when 0 positive errors of > in the S5, low pressure the number of turns lacks N the number of turns or the more i N of high pressure the number of turns；< 0 is negative
When error, the more N the number of turns of low pressure the number of turns or high pressure the number of turns lack i N the number of turns.
Advantageous effect is：Transformer cartridge type winding in the present invention accesses 380V voltages, is measured with 0.2 step voltage table,
Minimum resolution is 0.76V, it is ensured that measuring accuracy, it is ensured that operation detection experiment safety, and by with national standard into
Row comparison can obtain ratio error whether in prescribed limit, and if when may determine that 0 positive errors of >, low pressure the number of turns lacks N circles
Number or the more i N of high pressure the number of turns；When 0 negative errors of <, the more N the number of turns of low pressure the number of turns or high pressure the number of turns lack i N the number of turns, can be with
Conveniently find out the position of transformer winding the number of turns mistake and numerical value are how many.
Description of the drawings
Fig. 1 is the subordinate list GB1094.1-1996 of the present invention《Power transformer（Table 1）》.
Specific implementation mode
The invention discloses a kind of twin voltage detection methods of transformer cartridge type umber of turn, are as follows：
S1, test voltage is changed to a 380V voltages are added in the side of transformer cartridge type winding, transformer cartridge type winding
Other side access measures voltmeter, and lower voltage can be obtained in this way, reduce the measurement range of measuring instrument in this way, improve
Measurement accuracy, while also reducing operational danger；
Such as：30kVA transformers use 10KV test voltages, are measured with 0.2 step voltage table, minimum resolution 20V, this
380V test voltages are used in invention instead, are measured with 0.2 step voltage table, minimum resolution 0.76V, it is ensured that measuring accuracy；
S2, transformer cartridge type winding once surveyed by voltmeter after acquisition primary side voltage V1, the acquisition after secondary actual measurement
Single packet nominal transformation ratio of secondary side voltage V2, transformer are i, then can pass through calculating formula（1）Obtain ratio error；
S3, ratio error tolerance value are in GB1094.1-1996《Power transformer（Table 1）》Regulation ± 0.5%（Or resistance
Smaller in anti-1/10）, standard specified value is mainly the generic principles in view of transformer entire series, for distribution transformer
Device manufactures enterprise, and general manufactory the number of turns in coiling winding controls within 1 circle, and for 30kVA transformers
The ratio error of 1 circle of high pressure is 0.02%；
S4, again by the ratio error obtained in S2 in S3 national standard mark compared with, but when measurement error value be more than specification mark when,
Umber of turn occurs as soon as mistake, not can determine that high-voltage winding the number of turns is problematic or low pressure winding is problematic or the two all
It is problematic, then derived by being grouped to calculate as follows：
1）It is obtained by calculating formula (1)（2）, to obtain（3）, i.e. error the number of turns value of high-voltage winding；
2）By calculating formula（2）?（4）, to obtain,（5）, i.e. error the number of turns value of low pressure winding；
Wherein low pressure the number of turns of transformer winding is N circles, and high pressure the number of turns of transformer winding is respectively i N circles；
S5, therefore, can inversely be derived by the result of calculation numerical value obtained in S4：In the presence of ratio error, if high pressure
The number of turns problem, then high pressure the number of turns error value is the product with high pressure the number of turns;If low pressure the number of turns problem, then low pressure the number of turns error value is
It is reversed with the product of low pressure the number of turns.
When 0 positive errors of > in the S5, low pressure the number of turns lacks N the number of turns or the more i N of high pressure the number of turns；When 0 negative errors of <,
The more N the number of turns of low pressure the number of turns or high pressure the number of turns lack i N the number of turns.
Finally it should be noted that：Above example is only to illustrate the present invention and not limits technology described in the invention
Scheme；Therefore, although this specification with reference to above-mentioned each embodiment to present invention has been detailed description, this
Field it is to be appreciated by one skilled in the art that still can modify to the present invention or equivalent replacement；And all do not depart from this
The technical solution of the spirit and scope of invention and its improvement should all be covered in scope of the presently claimed invention.
Claims (3)
1. a kind of twin voltage detection method of transformer cartridge type umber of turn, it is characterised in that：It is as follows：
S1, test voltage is changed to a 380V voltages are added in the side of transformer cartridge type winding, transformer cartridge type winding
0.2 grade of measurement voltmeter is accessed in the other side, and lower voltage can be obtained in this way, reduce the measurement range of measuring instrument in this way,
Measurement accuracy is improved, while also reducing operational danger；
S2, transformer cartridge type winding once surveyed by voltmeter after acquisition primary side voltage V1, the acquisition after secondary actual measurement
Single packet nominal transformation ratio of secondary side voltage V2, transformer are i, then can pass through calculating formula（1）Obtain ratio error；
S3, ratio error tolerance value are in GB1094.1-1996《Power transformer（Table 1）》Regulation ± 0.5%（Or resistance
Smaller in anti-1/10）, standard specified value is mainly the generic principles in view of transformer entire series, for distribution transformer
Device manufactures enterprise, and general manufactory the number of turns in coiling winding controls within 1 circle, and for 30kVA transformers
The ratio error of 1 circle of high pressure is 0.02%；
S4, again by the ratio error obtained in S2 in S3 national standard mark compared with, but when measurement error value be more than specification mark when,
Umber of turn occurs as soon as mistake, not can determine that high-voltage winding the number of turns is problematic or low pressure winding is problematic or the two all
It is problematic, then derived by being grouped to calculate as follows：
It is obtained by calculating formula (1)（2）, to obtain（3）, i.e. error the number of turns value of high-voltage winding；
By calculating formula（2）?（4）, to obtain,（5）, i.e. error the number of turns value of low pressure winding；
S5, therefore, can inversely be derived by the result of calculation numerical value obtained in S4：In the presence of ratio error, if high pressure
The number of turns problem, then high pressure the number of turns error value is the product with high pressure the number of turns;If low pressure the number of turns problem, then low pressure the number of turns error value is
It is reversed with the product of low pressure the number of turns.
2. a kind of twin voltage detection method of transformer cartridge type umber of turn according to claim 1, it is characterised in that：Institute
The low pressure the number of turns for stating the transformer winding in S4 is N circles, and high pressure the number of turns of transformer winding is respectively i N circles.
3. a kind of twin voltage detection method of transformer cartridge type umber of turn according to claim 1, it is characterised in that：Institute
When stating 0 positive errors of > in S5, low pressure the number of turns lacks N the number of turns or the more i N of high pressure the number of turns；When 0 negative errors of <, low pressure the number of turns
More N the number of turns or high pressure the number of turns lack i N the number of turns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810498218.2A CN108732430A (en) | 2018-05-23 | 2018-05-23 | A kind of twin voltage detection method of transformer cartridge type umber of turn |
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| CN201810498218.2A CN108732430A (en) | 2018-05-23 | 2018-05-23 | A kind of twin voltage detection method of transformer cartridge type umber of turn |
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| CN108732430A true CN108732430A (en) | 2018-11-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112259360A (en) * | 2020-12-22 | 2021-01-22 | 三变科技股份有限公司 | Production method and turn number verification method of epoxy resin cast coil of dry-type transformer |
| CN116359625A (en) * | 2023-04-03 | 2023-06-30 | 三变科技股份有限公司 | Production method of double-split transformer and method for detecting abnormal number of turns of high-voltage coil |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089726A (en) * | 1993-01-09 | 1994-07-20 | 黄立 | A kind of transformer testing instrument |
| CN1419134A (en) * | 2002-12-12 | 2003-05-21 | 武汉国测科技股份有限公司 | Single phase power source measuring method and device for 2 type transformer rate |
| CN202838772U (en) * | 2012-10-18 | 2013-03-27 | 浙江省电力公司电力科学研究院 | Transformer transformation ratio simulation device |
| CN106124875A (en) * | 2016-06-13 | 2016-11-16 | 国家电网公司 | A kind of separate switching circuit measured for transformer voltage ratio |
| CN106918747A (en) * | 2015-12-28 | 2017-07-04 | 中国石油天然气集团公司 | Transformer Winding number of turn error pattern detects method |
-
2018
- 2018-05-23 CN CN201810498218.2A patent/CN108732430A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089726A (en) * | 1993-01-09 | 1994-07-20 | 黄立 | A kind of transformer testing instrument |
| CN1419134A (en) * | 2002-12-12 | 2003-05-21 | 武汉国测科技股份有限公司 | Single phase power source measuring method and device for 2 type transformer rate |
| CN202838772U (en) * | 2012-10-18 | 2013-03-27 | 浙江省电力公司电力科学研究院 | Transformer transformation ratio simulation device |
| CN106918747A (en) * | 2015-12-28 | 2017-07-04 | 中国石油天然气集团公司 | Transformer Winding number of turn error pattern detects method |
| CN106124875A (en) * | 2016-06-13 | 2016-11-16 | 国家电网公司 | A kind of separate switching circuit measured for transformer voltage ratio |
Non-Patent Citations (2)
| Title |
|---|
| 康瑞芳: "双电压表法测试变压器变比的原理及硬件设计", 《科技创新导报》 * |
| 阮万江等: "基于变比试验的变压器绕组匝数故障分析", 《变压器》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112259360A (en) * | 2020-12-22 | 2021-01-22 | 三变科技股份有限公司 | Production method and turn number verification method of epoxy resin cast coil of dry-type transformer |
| CN112259360B (en) * | 2020-12-22 | 2021-03-02 | 三变科技股份有限公司 | Production method and turn number verification method of epoxy resin cast coil of dry-type transformer |
| CN116359625A (en) * | 2023-04-03 | 2023-06-30 | 三变科技股份有限公司 | Production method of double-split transformer and method for detecting abnormal number of turns of high-voltage coil |
| CN116359625B (en) * | 2023-04-03 | 2024-01-02 | 三变科技股份有限公司 | Production method of double-split transformer and method for detecting abnormal number of turns of high-voltage coil |
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Application publication date: 20181102 |