CN103258626A - Two-winding testing transformer self-coupling wiring method and application thereof - Google Patents
Two-winding testing transformer self-coupling wiring method and application thereof Download PDFInfo
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- CN103258626A CN103258626A CN2013101299675A CN201310129967A CN103258626A CN 103258626 A CN103258626 A CN 103258626A CN 2013101299675 A CN2013101299675 A CN 2013101299675A CN 201310129967 A CN201310129967 A CN 201310129967A CN 103258626 A CN103258626 A CN 103258626A
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Abstract
The invention relates to a transformer self-coupling wiring technology, and particularly discloses a two-winding testing transformer self-coupling wiring method and application thereof. A two-winding testing transformer comprises a high-voltage winding and a low-voltage winding, and is characterized in that the head end of the low-voltage winding is connected with the tail end of the high-voltage winding through a copper bar, the head end of the high-voltage winding and the tail end of the low-voltage winding are respectively connected with corresponding terminals of a reactor of a test object, and the head end and the tail end of the low-voltage winding are connected with an output terminal of an intermediate transformer. The method is simple in wiring, convenient to operate, high in practical, higher in output voltage and large in output capacity; and although manufacturing cost is increased slightly, application to test of 500-1000kV alternating-current reactors and +/-400-+/-1100kV smoothing and filter reactors used in a high-voltage direct-current power transmission system is benefitted.
Description
(1) technical field
The present invention relates to transformer self coupling wiring technology, particularly a kind of self coupling mode of connection and application thereof of double winding testing transformer.
(2) background technology
In recent years, along with the development of high pressure, ultrahigh voltage power system, the transmission distance of AC and DC transmission line is also in continuous increase, between the circuit, the stray capacitance of line-to-ground also increases thereupon, especially the run time that load factor is lower.The appearance that causes for the increase that solves capacitive load rises problem, need parallel connection on the line or series reactor with the ability of the transmission power of raising AC and DC transmission line, reduce idle, active loss simultaneously, limited the generation of generator overexcitation phenomenon.
For 500kV and above transmission line of alternation current and ± 400kV and used filtering and the smoothing reactor of above DC power transmission line because electric pressure is higher and capacity is bigger; Consider the particularity of reactor itself simultaneously, every reactor only has a winding, does not meet electromagnetic induction principle.Reactor manufacturing firm needs more sometimes, and the testing transformer of voltage levels and capacity satisfies requirements such as reactor zero load, overexcitation, induced voltage test project.But, be 1000kV, reactor that capacity is bigger for voltage etc., bright and the prize-winning ability that surpasses the makers' production of some transformers, lifting, carrying of electric pressure in the hole of required testing transformer, let alone how to solve the transportation problem of bringing from other transformer factory's purchases.
(3) summary of the invention
The present invention provides self coupling mode of connection and the application thereof of simple, easy to operate, the practical double winding testing transformer of a kind of wiring in order to remedy the deficiencies in the prior art.
The present invention is achieved through the following technical solutions:
A kind of self coupling mode of connection of double winding testing transformer, the high pressure winding and the low pressure winding that comprise testing transformer, it is characterized in that: the tail end of the head end of described low pressure winding and high pressure winding links together by copper bar, the tail end of the head end of high pressure winding and low pressure winding links together with the corresponding terminal of test specimen reactor respectively, and the output line terminal of the head end of low pressure winding and tail end and intermediate transformer links together.
When carrying out the test of superhigh pressure reactance device, as required, in a manner described high pressure winding and low pressure winding are coupled together, finally finished testing transformer by the power supply of low pressure winding, export the Design Conception of the self coupling connection plan of test specimen after high pressure and the low pressure windings in series to.
More excellent scheme of the present invention is:
The sectional area of described copper bar is according to the size of high pressure winding rated current, and chooses based on the current density that allows in the air, makes the specification of copper bar meet the requirement of corresponding testing transformer.
The direct ground connection of the tail end of described low pressure winding or indirect earthed by other equipment has guaranteed the safety in utilization of circuit.
The application of the method for the invention aspect the raising on high-tension side output voltage of testing transformer and increase apparent capacity.
The method of the invention reduces the turn-to-turn voltage of testing transformer and the application of output capacity when finishing voltage levels, the test of jumbo reactor or testing the reactor of same electric pressure and capacity.
Wiring of the present invention is simple, easy to operate, practical, output voltage is improved, output capacity is big, though manufacturing cost slightly improves, be conducive in 500 ~ 1000kV AC reactor and HVDC (High Voltage Direct Current) transmission system, use ± 400 ~ ± application during the test of the flat ripple of 1100kV and filter reactor.
(4) description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is the elementary diagram that traditional double winding test transformer is used when reactor is tested;
Fig. 2 is elementary diagram of the present invention
Among the figure, 1 high pressure winding, 2 low pressure windings, 3 copper bars, 4 reactors, 5 intermediate transformers.
(5) embodiment
Accompanying drawing is a kind of specific embodiment of the present invention.This embodiment comprises high pressure winding 1, low pressure winding 2, copper bar 3, test specimen reactor 4 and intermediate transformer 5.
When carrying out the test of superhigh pressure reactance device, as required, elder generation links together the head end of the low pressure winding 2 of testing transformer and the tail end of high pressure winding 1 by copper bar 3, the sectional area of copper bar 3 should be according to the size of high pressure winding 1 rated current, and chooses based on the current density that allows in the air.The direct ground connection of the tail end of low pressure winding 2 or indirect earthed by miscellaneous equipment.Then the tail end of the head end of high pressure winding 1 and low pressure winding 2 is linked together with the corresponding terminal of test specimen reactor 4 respectively; The head end of low pressure winding 2 and the output line terminal of tail end and intermediate transformer 5 are linked together.Finally finish testing transformer by 2 power supplies of low pressure winding, exported the Design Conception of the self coupling connection plan of test product after high pressure and the low pressure windings in series to.
Through the test to many inferior shunt reactors, smoothing reactor, practice shows, testing transformer adopts after the self coupling mode of connection, not only its on high-tension side output voltage has improved, and its apparent capacity also has certain increase, provides strong technical support for the turn-to-turn voltage that reduces testing transformer, output capacity etc. when finishing more voltage levels, the test of more jumbo reactor or testing the reactor of same electric pressure and capacity.
Claims (5)
1. the self coupling mode of connection of a double winding testing transformer, the high pressure winding (1) and the low pressure winding (2) that comprise testing transformer, it is characterized in that: the tail end of the head end of described low pressure winding (2) and high pressure winding (1) links together by copper bar (3), the tail end of the head end of high pressure winding (1) and low pressure winding (2) links together with the corresponding terminal of test specimen reactor (4) respectively, and the output line terminal of the head end of low pressure winding (2) and tail end and intermediate transformer (5) links together.
2. the self coupling mode of connection of double winding testing transformer according to claim 1 is characterized in that: the sectional area of described copper bar (3) is according to the size of high pressure winding (1) rated current, and chooses based on the current density that allows in the air.
3. the self coupling mode of connection of double winding testing transformer according to claim 1 is characterized in that: the direct ground connection of tail end of described low pressure winding (2) or indirect earthed by other equipment.
4. the application of the self coupling mode of connection of white cover group testing transformer according to claim 1 aspect the raising on high-tension side output voltage of testing transformer and increase apparent capacity.
5. the self coupling mode of connection of double winding testing transformer according to claim 1 reduces the turn-to-turn voltage of testing transformer and the application of output capacity when finishing voltage levels, the test of jumbo reactor or testing the reactor of same electric pressure and capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101299675A CN103258626A (en) | 2013-04-16 | 2013-04-16 | Two-winding testing transformer self-coupling wiring method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101299675A CN103258626A (en) | 2013-04-16 | 2013-04-16 | Two-winding testing transformer self-coupling wiring method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103258626A true CN103258626A (en) | 2013-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101299675A Pending CN103258626A (en) | 2013-04-16 | 2013-04-16 | Two-winding testing transformer self-coupling wiring method and application thereof |
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| CN (1) | CN103258626A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037333A (en) * | 2017-03-29 | 2017-08-11 | 中国能源建设集团浙江火电建设有限公司 | A kind of wiring construction of low-pressure side two-winding transformer partial discharge test |
| CN114236318A (en) * | 2021-10-26 | 2022-03-25 | 保定天威保变电气股份有限公司 | Flexible-direct transformer network side and valve side winding series operation impact test method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1230652A (en) * | 1984-06-05 | 1987-12-22 | William S. Shaw | Power transformer for use with very high speed integrated circuits |
| CN2031533U (en) * | 1988-04-13 | 1989-01-25 | 张泰石 | Frequency-changing series resonant breakdown voltage testing device |
| CN101383219A (en) * | 2008-06-30 | 2009-03-11 | 广州广高高压电器有限公司 | Copper array of dry transformer foil coil and manufacturing method thereof |
-
2013
- 2013-04-16 CN CN2013101299675A patent/CN103258626A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1230652A (en) * | 1984-06-05 | 1987-12-22 | William S. Shaw | Power transformer for use with very high speed integrated circuits |
| CN2031533U (en) * | 1988-04-13 | 1989-01-25 | 张泰石 | Frequency-changing series resonant breakdown voltage testing device |
| CN101383219A (en) * | 2008-06-30 | 2009-03-11 | 广州广高高压电器有限公司 | Copper array of dry transformer foil coil and manufacturing method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 孙定华: "超高压并联电抗器的研制", 《技术报导（西安）》 * |
| 宋慧欣等: "普通双绕组变压器改接成自耦变压器的研究", 《硅谷》 * |
| 尹宝训等: "变压器试验用中间变压器的自耦运行分析", 《变压器》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037333A (en) * | 2017-03-29 | 2017-08-11 | 中国能源建设集团浙江火电建设有限公司 | A kind of wiring construction of low-pressure side two-winding transformer partial discharge test |
| CN107037333B (en) * | 2017-03-29 | 2023-06-02 | 中国能源建设集团浙江火电建设有限公司 | Wiring structure for partial discharge test of low-voltage side double-winding transformer |
| CN114236318A (en) * | 2021-10-26 | 2022-03-25 | 保定天威保变电气股份有限公司 | Flexible-direct transformer network side and valve side winding series operation impact test method |
| CN114236318B (en) * | 2021-10-26 | 2024-03-26 | 保定天威保变电气股份有限公司 | Impact test method for series operation of windings on net side and valve side of flexible direct-current transformer |
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Application publication date: 20130821 |