CN102385045B - Error test method for heavy current transformer and special device used in same - Google Patents
Error test method for heavy current transformer and special device used in same Download PDFInfo
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- CN102385045B CN102385045B CN 201110325944 CN201110325944A CN102385045B CN 102385045 B CN102385045 B CN 102385045B CN 201110325944 CN201110325944 CN 201110325944 CN 201110325944 A CN201110325944 A CN 201110325944A CN 102385045 B CN102385045 B CN 102385045B
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Abstract
The invention relates to an error test method for a heavy current transformer and a special device used in the same, and belongs to the technical field of transformer tests. The technical proposal in the invention is as follows: one sides of two L-shaped connecting plates (1, 3) are close to each other and the other sides of the two L-shaped connecting plates are separated from each other so as to form a U-shaped integral structure, and two ends of the U-shaped integral structure are respectively connected with two ends of an arc connecting plate (4); the two L-shaped connecting plates and the arc connecting plate form a tandem two-turns structure; the adjacent sides of the two L-shaped connecting plates pass through the center of the tested current transformer, and the distance from the L-shaped connecting plates and the arc connecting plate to the tested current transformer is at least 3 meters; and end parts of the adjacent sides of the two L-shaped connecting plates are respectively connected with two ends of a test current transformer so as to complete error test of the current transformer. By adopting the technical proposal, the error test of the heavier current transformer can be completed by experimental equipment with lower output current, which can lower the cost, avoid influence of a return conductor and obtain accurate and reliable test results.
Description
Technical field
The present invention relates to a kind of high-current transformer error test method and isolated plant, belong to mutual inductor experimental technique field.
Background technology
Current transformer error test is generally carried out in the semi-manufacture testing stations, and the general maximum output primary current of testing equipment of semi-manufacture testing stations only can carry out error test to rated primary current 1250A and following current transformer in 1500A.When if rated primary current surpasses 1250A, usually adopt the method that improves a number of turn.Namely according to the principle I of ampere-turn equilibrium
1N
1=I
2N
2, increase by one time the number of turn, reduce primary current.For example: the test product rated primary current is 5000A, can only around 4 circles on current transformer, apply the 1250A electric current and carry out error test.Directly on current transformer, can't avoid returning the impact of conductor due to p-wire, there is relatively large deviation in test result, can't judge correctly whether current transformer error is qualified.If improve the testing equipment ability, need to purchase large capacity pressure regulator and large capacity up-flow change and supporting power supply, large current lead etc., need to drop into hundreds thousand of units, cost is too high, how to use the experimental facilities of less output current, complete than high-current transformer error test, reduce costs, completing experiment, is the technical matters that this area needs to be resolved hurrily.
Summary of the invention
The purpose of this invention is to provide a kind of high-current transformer error test method and isolated plant, use the experimental facilities of less output current, complete than high-current transformer error test, reduce costs, complete experiment, solve the problems referred to above that background technology exists.
Technical scheme of the present invention is: a kind of device special for high-current transformer error test, comprise two L shaped joint covers, an arc joint cover, one side of two L shaped joint covers is mutually close, be arranged in parallel, do not contact each other, leave the gap, the another side of two L shaped joint covers is separated from each other, layout also is parallel to each other, the overall U-shaped structure, the two ends of U-shaped structure are connected with the two ends of an arc joint cover respectively, and it is the structure of two circles that two L shaped joint covers and an arc joint cover consist of series connection together.
Also be provided with fixed head, be fixed on two L shaped joint covers mutually on close limit, guarantee that two limits of two L shaped joint covers do not contact, leave gap, keeping parallelism each other; The quantity of fixed head is two, and the interval is arranged on the limit of L shaped joint cover.
Two L shaped joint covers are the joint cover that copper busbar is made, and fixed head is provided with twice parallel tabular holes, and two L shaped joint covers that copper busbar is made pass from twice parallel tabular holes respectively.
A kind of high-current transformer error test method, comprise following steps: one side 1. two L shaped joint covers mutually close, be arranged in parallel, do not contact each other, leave the gap, the another side of two L shaped joint covers is separated from each other, the layout that also is parallel to each other, overall U-shaped structure, the two ends of U-shaped structure are connected with the two ends of an arc joint cover respectively, and it is the structure of two circles that two L shaped joint covers and an arc joint cover consist of series connection together; 2. two L shaped joint covers pass from the center of tested current transformer together near the limit of arranging, L shaped joint cover two ends and the tested current transformer of arc joint cover distance have three meters distances at least; 3. two L shaped joint covers are near the limit of arranging, the current transformer error test with the two ends that up-flow becomes, is completed in its end joint test respectively.
Good effect of the present invention: the present invention can use the experimental facilities of less output current, completes than high-current transformer error test, reduces costs, and completes experiment, can avoid returning the impact of conductor, and test result accurately and reliably.
Description of drawings
Fig. 1 is the embodiments of the invention schematic diagram;
Fig. 2 is facing of fixed head of the present invention and schematic side view;
In figure: L shaped joint cover 1,3, fixed head 2, arc joint cover 4, tested current transformer 5, two ends P1, C2 of L shaped joint cover 1, two ends P2, C1 of L shaped joint cover 3, two ends E1, E2 of arc joint cover 4.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described by embodiment.
A kind of device special for high-current transformer error test, comprise two L shaped joint covers, an arc joint cover 4, two L shaped joint covers 1, one side of 3 are mutually close, be arranged in parallel, do not contact each other, leave the gap, the another side of two L shaped joint covers is separated from each other, layout also is parallel to each other, overall U-shaped structure, the two ends of U-shaped structure are connected with the two ends of an arc joint cover respectively, and it is the structure of two circles that two L shaped joint covers and an arc joint cover consist of series connection together.
Also be provided with fixed head 2, be fixed on two L shaped joint covers mutually on close limit, guarantee that two limits of two L shaped joint covers do not contact, leave gap, keeping parallelism each other; The quantity of fixed head is two, and the interval is arranged on the limit of L shaped joint cover.
Two L shaped joint covers are the joint cover that copper busbar is made, and fixed head is provided with twice parallel tabular holes, and two L shaped joint covers that copper busbar is made pass from twice parallel tabular holes respectively.
A kind of high-current transformer error test method, comprise following steps: 1. one side of two L shaped joint covers is close, be arranged in parallel, do not contact each other, leave the gap, the another side of two L shaped joint covers is separated from each other, the layout that also is parallel to each other, overall U-shaped structure, the two ends of U-shaped structure are connected with the two ends of an arc joint cover respectively, and it is the structure of two circles that two L shaped joint covers and an arc joint cover consist of series connection together; 2. two L shaped joint covers pass from the center of tested current transformer together near the limit of arranging, L shaped joint cover two ends and the tested current transformer of arc joint cover distance have three meters distances at least; 3. two L shaped joint covers are near the limit of arranging, the current transformer error test with the two ends that up-flow becomes, is completed in its end joint test respectively.
During test, the P1 of L shaped joint cover 1 end joint test becomes with up-flow, and the C2 end connects the E1 end of arc joint cover 4, and the E2 end of arc joint cover 4 connects the C1 end of L shaped joint cover 3, and the P2 end of L shaped joint cover 2 takes back test again and becomes with up-flow.
Also be provided with fixed head 2, be fixed on two L shaped joint covers mutually on close limit, two limits that guarantee two L shaped joint covers do not contact, leave gap, keeping parallelism each other, the quantity of fixed head is two, the interval is arranged on the limit of L shaped joint cover, is tested current transformer in the middle of two fixed heads.
Claims (5)
1. device special for high-current transformer error test, it is characterized in that comprising two L shaped joint covers, an arc joint cover (4), one side of two L shaped joint covers (1,3) is mutually close, be arranged in parallel, do not contact each other, leave the gap, the another side of two L shaped joint covers is separated from each other, layout also is parallel to each other, the overall U-shaped structure, the two ends of U-shaped structure are connected with the two ends of an arc joint cover respectively, and it is the structure of two circles that two L shaped joint covers and an arc joint cover consist of series connection together.
2. a kind of device special for high-current transformer error test according to claim 1, it is characterized in that also being provided with fixed head (2), be fixed on two L shaped joint covers mutually on close limit, the quantity of fixed head is two, and the interval is arranged on the limit of L shaped joint cover.
3. a kind of device special for high-current transformer error test according to claim 2, it is characterized in that two L shaped joint covers are the joint cover that copper busbar is made, fixed head is provided with twice parallel tabular holes, and two L shaped joint covers that copper busbar is made pass from twice parallel tabular holes respectively.
4. high-current transformer error test method, it is characterized in that comprising following steps: 1. one side of two L shaped joint covers is close, be arranged in parallel, do not contact each other, leave the gap, the another side of two L shaped joint covers is separated from each other, the layout that also is parallel to each other, overall U-shaped structure, the two ends of U-shaped structure are connected with the two ends of an arc joint cover respectively, and it is the structure of two circles that two L shaped joint covers and an arc joint cover consist of series connection together; 2. two L shaped joint covers pass from the center of tested current transformer together near the limit of arranging, L shaped joint cover two ends and the tested current transformer of arc joint cover distance have three meters distances at least; 3. two L shaped joint covers are near the limit of arranging, the current transformer error test with the two ends that up-flow becomes, is completed in its end joint test respectively.
5. big current transformer error test method according to claim 4, it is characterized in that also being provided with fixed head, be fixed on two L shaped joint covers mutually on close limit, two limits that guarantee two L shaped joint covers do not contact, leave gap, keeping parallelism each other, the quantity of fixed head is two, the interval is arranged on the limit of L shaped joint cover, is tested current transformer in the middle of two fixed heads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110325944 CN102385045B (en) | 2011-10-25 | 2011-10-25 | Error test method for heavy current transformer and special device used in same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110325944 CN102385045B (en) | 2011-10-25 | 2011-10-25 | Error test method for heavy current transformer and special device used in same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102385045A CN102385045A (en) | 2012-03-21 |
| CN102385045B true CN102385045B (en) | 2013-06-12 |
Family
ID=45824659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110325944 Expired - Fee Related CN102385045B (en) | 2011-10-25 | 2011-10-25 | Error test method for heavy current transformer and special device used in same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102385045B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105022015B (en) * | 2014-04-17 | 2019-03-26 | 中国能源建设集团有限公司湖南电力电瓷电器厂 | Extra-high voltage current transformer TPY error test device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2501171Y (en) * | 2001-07-13 | 2002-07-17 | 苏仲衡 | Air high-voltage current transformer with new structure |
| CN101339222A (en) * | 2008-05-07 | 2009-01-07 | 山东电力研究院 | Current mutual inductor coil excitation characteristic test wire winding tool equipment |
| CN201548568U (en) * | 2009-10-10 | 2010-08-11 | 安徽省电力公司滁州供电公司 | Primary current testing clamp for calibration of straight plate current transformer on site |
| CN202275157U (en) * | 2011-10-25 | 2012-06-13 | 保定天威集团有限公司 | Device special for high-current transformer error test |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0284705A (en) * | 1988-09-21 | 1990-03-26 | Fujitsu Denso Ltd | High-frequency transformer |
-
2011
- 2011-10-25 CN CN 201110325944 patent/CN102385045B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2501171Y (en) * | 2001-07-13 | 2002-07-17 | 苏仲衡 | Air high-voltage current transformer with new structure |
| CN101339222A (en) * | 2008-05-07 | 2009-01-07 | 山东电力研究院 | Current mutual inductor coil excitation characteristic test wire winding tool equipment |
| CN201548568U (en) * | 2009-10-10 | 2010-08-11 | 安徽省电力公司滁州供电公司 | Primary current testing clamp for calibration of straight plate current transformer on site |
| CN202275157U (en) * | 2011-10-25 | 2012-06-13 | 保定天威集团有限公司 | Device special for high-current transformer error test |
Non-Patent Citations (1)
| Title |
|---|
| JP平2-84705A 1990.03.26 |
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| CN102385045A (en) | 2012-03-21 |
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