CN201298448Y - A split type voltage mutual inductor - Google Patents
A split type voltage mutual inductor Download PDFInfo
- Publication number
- CN201298448Y CN201298448Y CNU2008202220383U CN200820222038U CN201298448Y CN 201298448 Y CN201298448 Y CN 201298448Y CN U2008202220383 U CNU2008202220383 U CN U2008202220383U CN 200820222038 U CN200820222038 U CN 200820222038U CN 201298448 Y CN201298448 Y CN 201298448Y
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- transformer
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- 239000003990 capacitor Substances 0.000 claims abstract description 41
- 238000004804 winding Methods 0.000 claims description 36
- 239000012212 insulator Substances 0.000 claims description 10
- 229910052573 porcelain Inorganic materials 0.000 abstract 2
- 238000001514 detection method Methods 0.000 description 9
- 238000005259 measurement Methods 0.000 description 8
- 238000013016 damping Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000003745 diagnosis Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000002828 fuel tank Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000002788 crimping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model relates to a high voltage electric power measuring field, and discloses a split type voltage mutual inductor, including a capacitive potential divider and an electro-magnetism unit, which is characterized in that the capacitive potential divider includes a base, a porcelain bushing fixed on the base, as well as a first potential dividing capacitor and a second potential dividing capacitor connected in series in sequence in the porcelain bushing, the connecting terminals of the capacitive potential divider lead out the base; the electro-magnetism unit includes a housing, a middle transformer and a compensation reactor provided in the housing, and the connecting terminals of the transformer and the compensation reactor lead out the housing.
Description
Technical field
The utility model relates to the high-tension electricity fields of measurement, particularly a kind of split type voltage transformer.
Background technology
Existing capacitance type potential transformer adopts stacked structure, and promptly capacitor voltage divider is stacked in and forms the open side type structure on the electromagnetic unit.Its electromagnetic unit inside includes parts such as intermediate transformer, compensation reactor, fast saturated damper, protective device, and the adjusting winding of intermediate transformer, compensation reactor is all at fuel tank internal; The secondary terminal of intermediate transformer, the low-voltage terminal of capacitor voltage divider all are drawn out on the fuel tank in the secondary terminal outlet box.This structure has following shortcoming:
The one, on-the-spot detection difficulty is big.This series products often need carry out an acceptance inspection at the transformer station scene and test and annual periodic inspection, and is big by present method of testing error because electromagnetic unit and voltage divider can't be realized electrical separation, the result who often makes the mistake.Although have many products on electromagnetic unit, install additional in crimping ground device, need to adopt the electric capacity and the dielectric loss of opposition method test voltage divider, personnel need be insulated with ground in the test process, personnel and tester are in high potential, poor stability.
The 2nd, breaking down is difficult to diagnose reason, can't carry out the detection of internal components at the scene, must open the sealing of electromagnetic unit at the scene and just can carry out cause investigation.The expense height of maintenance and repair, the time is long.
Summary of the invention
The object of the present invention is to provide a kind of scene easy to detect, and the sealing that need not open equipment can be carried out the split type voltage transformer that all internal components detect diagnosis.
In order to achieve the above object, the utility model is achieved by the following technical solutions: a kind of split type voltage transformer, comprise capacitor voltage divider and electromagnetic unit, it is characterized in that, described capacitor voltage divider comprises base, is fixed on the insulator on the base and is arranged on insulator interior first voltage-dividing capacitor and second voltage-dividing capacitor of series connection successively that the binding post of described capacitor voltage divider is drawn described base; Described electromagnetic unit comprises housing, is arranged on intermediate transformer and compensation reactor in the housing, and the binding post of intermediate transformer and compensation reactor is drawn described housing.
Further characteristics of the present utility model are:
(1) described first voltage-dividing capacitor and second voltage-dividing capacitor are connected successively, the other end of first voltage-dividing capacitor is electrically connected to the HV Terminal that is arranged on the insulator top, the other end of second voltage-dividing capacitor is drawn through the low-tension bushing that is arranged on the described base, and the common node of first voltage-dividing capacitor and second voltage-dividing capacitor is drawn through the medium-tension bushing that is arranged on the described base.
(2) described electromagnetic unit also comprises the medium-tension bushing that is arranged on case top, the node sleeve pipe that is arranged on the housing side, terminal board and secondary terminal board; The high-voltage connection terminal of the primary side main winding of intermediate transformer is drawn through medium-tension bushing, its low-voltage wiring terminal is electrically connected after the node sleeve pipe is drawn with the high-voltage connection terminal of compensation reactor main winding, and the low-voltage wiring terminal of compensation reactor main winding is guided to terminal board one time; The secondary side binding post of intermediate transformer is guided to the secondary terminal board.
It further improves and is: the binding post of the adjusting winding of described intermediate transformer and compensation reactor is drawn out to terminal board respectively one time.
(3) housing of described electromagnetic unit is airtight, and is filled with insulating oil.
Because the utility model is with independently capacitor voltage divider and electromagnetic unit two parts of being divided into of capacitance type potential transformer, and the main binding post of the two or all binding posts are independently drawn, therefore, can realize detection and failure diagnosis easily to all parts of electromagnetic unit inside.
Description of drawings
Fig. 1 is the utility model capacitor voltage divider structure chart;
Fig. 2 is the utility model electromagnetic unit structure chart;
Fig. 3 is the electrical schematic diagram of the total assembling structure of the utility model capacitance type potential transformer.
Embodiment
With reference to Fig. 1, capacitor voltage divider comprises base 2, be fixed on the insulator 1 on the base and be arranged on first voltage-dividing capacitor and second voltage-dividing capacitor of series connection successively in the insulator 1.First voltage-dividing capacitor and second voltage-dividing capacitor are connected successively, the other end of first voltage-dividing capacitor is electrically connected to the HV Terminal that is arranged on insulator 1 top, the low-voltage terminal of second voltage-dividing capacitor is in low-tension bushing 3 causes base 2, and the low-tension bushing 3 through base 2 causes the outside again; The common node of first voltage-dividing capacitor and second voltage-dividing capacitor is as intermediate voltage terminal, and intermediate voltage terminal is in medium-tension bushing 4 causes base 2, and the medium-tension bushing 4 through base 2 causes the outside again.
With reference to Fig. 2, electromagnetic unit comprises: housing 5, be arranged on intermediate transformer 6 and compensation reactor 7, the medium-tension bushing 8 that is arranged on housing 5 tops, the secondary terminal board 9 that is arranged on the housing side and node sleeve pipe, a terminal board 10 in the housing 5.Housing 5 is airtight, and is filled with insulating oil, improves the dielectric strength of intermediate transformer 6 and compensation reactor 7.The high-voltage connection terminal of the primary side main winding of intermediate transformer 6 is drawn through medium-tension bushing 8, its low-voltage wiring terminal is electrically connected after the node sleeve pipe is drawn with the high-voltage connection terminal of compensation reactor 7 main windings, and the low-voltage wiring terminal of compensation reactor 7 main windings is guided to terminal board 10 one time; The secondary side binding post of intermediate transformer 6 is guided to the secondary terminal board.Intermediate transformer 6 and compensation reactor 7 can have a plurality of adjusting windings, and its all binding posts also can be drawn out to one time terminal board 10 respectively.
With reference to Fig. 3, electrical principle of the present utility model is described.The first voltage-dividing capacitor C1 and second fen pressing capacitor C2 connect successively in the insulator, and the other end of the first voltage-dividing capacitor C1 is connected electrically in HV Terminal A, the other end ground connection of second voltage-dividing capacitor.Intermediate transformer T has main winding one time, once regulate winding B1, B2, B3 for three, their binding post is respectively B11, B12, B13, B21, B22, B23 and B31, B32, B33 and four secondary winding 1a-1n, 2a-2n, 3a-3n, da-dn, speed saturable reactor Lz and terminal da and d1, damping resistance Rz and terminal dn and d2.Compensation reactor L has main winding and two adjusting winding K1, K2, and their binding post is respectively K11, K12, K13 and K21, K22, K23.
The order that is electrically connected of whole primary circuit is the sub-A ' of intermediate voltage terminal---main winding HV Terminal of intermediate transformer, the main winding HV Terminal of a main winding low-voltage terminal---compensation reactor, the main winding low-voltage terminal, adjusting winding K2, K1---the once adjusting winding B3 of intermediate transformer, the terminal X terminal in B2, B1------primary circuit.
Because the binding post of the main winding of intermediate transformer T and the main winding of compensation reactor L is drawn housing.All terminals of secondary winding of speed saturable reactor Lz terminal da and d1, damping resistance Rz terminal dn and d2, intermediate transformer T all lead to the secondary terminal board, and protective device F is external.This structure can realize detection and the failure diagnosis to all parts of electromagnetic unit inside.Concrete grammar is as follows:
(1) to detection and the measurement of middle transformer T: the detection of intermediate transformer T and measure in have each winding D.C. resistance, zero load, VA characteristic, induction is withstand voltage.The D.C. resistance of winding and secondary winding can directly be measured by binding post.The D.C. resistance of residual voltage winding is opened d1, the d2 brace is directly measured by da, dn terminal.When unloaded and VA feature measurement, induced over voltage withstand test, open d1, d2 brace, and be node conduit connection terminal XT ground connection, can apply voltage by secondary winding and carry out the low-pressure end of a winding.
(2) to detection and the measurement of compensation reactor L: the detection of compensation reactor L and measure in have D.C. resistance, the VA characteristic of winding.Open the two ends connecting line of protective device F during measurement.D.C. resistance is that node conduit connection terminal XT and L terminal are directly measured by the high-voltage connection terminal of compensation reactor main winding.When measuring the VA characteristic,, apply voltage by the L terminal and measure compensation reactor main winding high-voltage connection terminal XT ground connection.
(3) to the measurement of damping reactor Lz: open d1, d2 brace, carry out the VA feature measurement by da, d1 terminal.
(4) to the measurement of damping resistance Rz: open d1, d2 brace, measure by dn, d2 terminal.
(5) to the detection of protection device F: protection device F is external, opens its external connection line, can detect.
Claims (5)
1, a kind of split type voltage transformer, comprise capacitor voltage divider and electromagnetic unit, it is characterized in that, described capacitor voltage divider comprises base, is fixed on the insulator on the base and is arranged on insulator interior first voltage-dividing capacitor and second voltage-dividing capacitor of series connection successively that the binding post of described capacitor voltage divider is drawn described base; Described electromagnetic unit comprises housing, is arranged on intermediate transformer and compensation reactor in the housing, and the binding post of intermediate transformer and compensation reactor is drawn described housing.
2, a kind of split type voltage transformer according to claim 1, it is characterized in that, described first voltage-dividing capacitor and second voltage-dividing capacitor are connected successively, the other end of first voltage-dividing capacitor is electrically connected to the HV Terminal that is arranged on the insulator top, the other end of second voltage-dividing capacitor is drawn through the low-tension bushing that is arranged on the described base, and the common node of first voltage-dividing capacitor and second voltage-dividing capacitor is drawn through the medium-tension bushing that is arranged on the described base.
3, a kind of split type voltage transformer according to claim 1 is characterized in that, described electromagnetic unit also comprises the medium-tension bushing that is arranged on case top, the node sleeve pipe that is arranged on the housing side, terminal board and secondary terminal board; The high-voltage connection terminal of the primary side main winding of intermediate transformer is drawn through medium-tension bushing, its low-voltage wiring terminal is electrically connected after the node sleeve pipe is drawn with the high-voltage connection terminal of compensation reactor main winding, and the low-voltage wiring terminal of compensation reactor main winding is guided to terminal board one time; The secondary side binding post of intermediate transformer is guided to the secondary terminal board.
4, a kind of split type voltage transformer according to claim 3 is characterized in that, the binding post of the adjusting winding of described intermediate transformer and compensation reactor is drawn out to terminal board respectively one time.
5, a kind of split type voltage transformer according to claim 1 is characterized in that the housing of described electromagnetic unit is airtight, and is filled with insulating oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202220383U CN201298448Y (en) | 2008-10-27 | 2008-10-27 | A split type voltage mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202220383U CN201298448Y (en) | 2008-10-27 | 2008-10-27 | A split type voltage mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201298448Y true CN201298448Y (en) | 2009-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202220383U Expired - Lifetime CN201298448Y (en) | 2008-10-27 | 2008-10-27 | A split type voltage mutual inductor |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915860A (en) * | 2010-07-22 | 2010-12-15 | 无锡市锡容电力电器有限公司 | Integrated output terminal structure of capacitive voltage divider |
| CN103018497A (en) * | 2012-12-21 | 2013-04-03 | 桂林电力电容器有限责任公司 | Medium-voltage grounding terminal structure for capacitor voltage transformer test |
| CN103035393A (en) * | 2012-12-27 | 2013-04-10 | 中国西电电气股份有限公司 | Electromagnetic unit and capacitor voltage transformer including electromagnetic unit |
| CN105742033A (en) * | 2014-12-10 | 2016-07-06 | 特变电工康嘉(沈阳)互感器有限责任公司 | Primary coil of CVT intermediate transformer and manufacturing method of primary coil |
| CN106128721A (en) * | 2016-08-15 | 2016-11-16 | 湖南华雄新材料有限公司 | A kind of CVT electromagnetic unit intermediate transformer |
| CN106128714A (en) * | 2016-08-15 | 2016-11-16 | 湖南华雄新材料有限公司 | A kind of Novel CVT dry-type electromagnetic unit |
| CN107731488A (en) * | 2017-11-10 | 2018-02-23 | 江苏思源赫兹互感器有限公司 | A kind of more piece voltage transformer for being easy to adjust error |
| CN108417386A (en) * | 2018-01-12 | 2018-08-17 | 桂林电力电容器有限责任公司 | A kind of high-voltage capacitor base device |
| CN109901094A (en) * | 2019-04-16 | 2019-06-18 | 贵州电网有限责任公司 | A kind of low-voltage-grade CVT experimental rig and test method |
| CN110379612A (en) * | 2019-07-22 | 2019-10-25 | 国网山东省电力公司电力科学研究院 | 10kV cast-type capacitance type potential transformer |
-
2008
- 2008-10-27 CN CNU2008202220383U patent/CN201298448Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915860A (en) * | 2010-07-22 | 2010-12-15 | 无锡市锡容电力电器有限公司 | Integrated output terminal structure of capacitive voltage divider |
| CN101915860B (en) * | 2010-07-22 | 2013-01-09 | 无锡市锡容电力电器有限公司 | Integrated output terminal structure of capacitive voltage divider |
| CN103018497A (en) * | 2012-12-21 | 2013-04-03 | 桂林电力电容器有限责任公司 | Medium-voltage grounding terminal structure for capacitor voltage transformer test |
| CN103035393A (en) * | 2012-12-27 | 2013-04-10 | 中国西电电气股份有限公司 | Electromagnetic unit and capacitor voltage transformer including electromagnetic unit |
| CN105742033A (en) * | 2014-12-10 | 2016-07-06 | 特变电工康嘉(沈阳)互感器有限责任公司 | Primary coil of CVT intermediate transformer and manufacturing method of primary coil |
| CN106128721A (en) * | 2016-08-15 | 2016-11-16 | 湖南华雄新材料有限公司 | A kind of CVT electromagnetic unit intermediate transformer |
| CN106128714A (en) * | 2016-08-15 | 2016-11-16 | 湖南华雄新材料有限公司 | A kind of Novel CVT dry-type electromagnetic unit |
| CN107731488A (en) * | 2017-11-10 | 2018-02-23 | 江苏思源赫兹互感器有限公司 | A kind of more piece voltage transformer for being easy to adjust error |
| CN107731488B (en) * | 2017-11-10 | 2024-02-23 | 江苏思源赫兹互感器有限公司 | Multisection voltage transformer convenient to adjust error |
| CN108417386A (en) * | 2018-01-12 | 2018-08-17 | 桂林电力电容器有限责任公司 | A kind of high-voltage capacitor base device |
| CN109901094A (en) * | 2019-04-16 | 2019-06-18 | 贵州电网有限责任公司 | A kind of low-voltage-grade CVT experimental rig and test method |
| CN110379612A (en) * | 2019-07-22 | 2019-10-25 | 国网山东省电力公司电力科学研究院 | 10kV cast-type capacitance type potential transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091225 Address after: Shaanxi city of Xi'an Province Tang Hing Road No. 7, zip code: 710075 Co-patentee after: State Grid Corporation of China Patentee after: China Electric electric Limited by Share Ltd Address before: Shaanxi city of Xi'an Province Tang Hing Road No. 7, zip code: 710075 Patentee before: China XD Electronic Corporation |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090826 |