CN202495328U - Low-voltage adjustable compensating inductor - Google Patents
Low-voltage adjustable compensating inductor Download PDFInfo
- Publication number
- CN202495328U CN202495328U CN2012201057427U CN201220105742U CN202495328U CN 202495328 U CN202495328 U CN 202495328U CN 2012201057427 U CN2012201057427 U CN 2012201057427U CN 201220105742 U CN201220105742 U CN 201220105742U CN 202495328 U CN202495328 U CN 202495328U
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- coil
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- inductance
- inductance coil
- metal shell
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- 239000002184 metal Substances 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 238000009413 insulation Methods 0.000 claims description 5
- 238000012360 testing method Methods 0.000 abstract description 21
- 230000006698 induction Effects 0.000 abstract 2
- 230000033228 biological regulation Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
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Abstract
The utility model relates to a low-voltage adjustable compensating inductor, in particular to an adjustable compensating inductor suitable for a cascade voltage transformer frequency-tripling induction withstand voltage test device in a 220kV high-voltage combined electrical appliance GIS. The low-voltage adjustable compensating inductor is provided with three inductance coil taps, wherein the three inductance coil taps are connected with a coil through leads respectively; the coil is arranged in a metal shell; a certain insulating distance exists between the coil and the metal shell; and the three inductance coil taps, the head end of an inductance coil and the tail end of the inductance coil are arranged on the metal shell. The low-voltage adjustable compensating inductor is added into a non-pressurized coil of a tested voltage transformer in parallel or two groups of low-voltage adjustable compensating inductors are added into two non-pressurized coils of a tested voltage transformer in parallel, so that voltage transformer induction withstand voltage test work in various types of 220kV high-voltage combined electrical appliances can be consistent with the requirements of the regulation GB50150-2006.
Description
Technical field
The utility model relates to a kind of low pressure adjustable compensation inductance, particularly relates to the applied adjustable compensation inductance of induced over voltage withstand test device in the cascade-type voltage transformer induced over voltage withstand test in a kind of 220kV of being applicable to high pressure combined electrical apparatus GIS.
Background technology
With improving supply frequency, reduce exciting current and reach and improve the purpose that applies voltage and be applicable to that the voltage transformer of graded insulation carries out withstand voltage test.As will be taked suitable wiring by the examination voltage transformer, the master of voltage transformer, longitudinal insulation are examined simultaneously.For preventing that being tried the voltage transformer core sataration should improve test frequency, generally adopts 150 hertz frequencies.Fig. 1 is the key wiring diagram of induced over voltage withstand test device in the prior art, and this induced over voltage withstand test device is responded to when withstand voltage for the cascade-type voltage transformer in the 66kV high pressure combined electrical apparatus GIS, can satisfy the demand.And for the cascade-type voltage transformer in the 220kV high pressure combined electrical apparatus GIS owing to reasons such as test voltage height and volume, structures, make the test capacity increase greatly.Because receive the influence of conductor cross-section, the cascade-type voltage transformer secondary current can not be excessive, generally can not surpass 30-40 amperes, manufacturer is different and different.Testing crew is being responded to cascade-type voltage transformer when withstand voltage; Usually can run into the excessive problem of test current; When test current has arrived the maximum current that low-voltage coil can bear, at this moment sense high-tension coil head end test voltage and still do not reach the test voltage that rules require far away.Thereby this has become puzzlement those skilled in the art's technical barrier.
Summary of the invention
In order to solve the problems of the technologies described above; The utility model provides a kind of low pressure adjustable compensation inductance; Purpose is in order to address the above problem, and makes that the voltage transformer induced over voltage withstand test work in all kinds of 220kV high pressure combined electrical apparatus GISs of different manufacturers production all can meet rules GB50150-2006 requirement.In order to achieve the above object, the utility model is realized through following technical proposals.
Low pressure adjustable compensation inductance; Be provided with three inductance coil taps; Three inductance coil taps are connected with coil through lead respectively; Coil is arranged in the metal shell, and coil and metal shell have certain insulation distance, and three inductance coil taps and inductance coil head end and inductance coil end are located on the metal shell.
Described three inductance coil taps, first tap is located at 6/7 position of inductance coil length, and second tap is located at 5/7 position of inductance coil length, and the 3rd tap is located at 4/7 position of inductance coil length.
Described coil is connected under the metal shell through support.
Owing to adopt technique scheme, make to the utlity model has following beneficial effect:
The utility model parallel connection join by the examination non-pressurised coil of voltage transformer or two groups of the utility model respectively parallel connection join by two non-pressurised coils of examination voltage transformer; When the voltage transformer induced over voltage withstand test in 220kV high pressure combined electrical apparatus GIS is worked; No matter different manufacturers is produced the voltage transformer in all kinds of 220kV high pressure combined electrical apparatus GISs; Can both make cascade-type voltage transformer pressurization coil secondary current be no more than 30-40 amperes through adjustable compensation adjustment of inductance size.Thereby make the voltage transformer induced over voltage withstand test work in all kinds of 220kV high pressure combined electrical apparatus GISs of different manufacturers production all can meet rules GB50150-2006 requirement.
Description of drawings
Fig. 1 is the key wiring diagram of induced over voltage withstand test device in the prior art;
Fig. 2 is that the utility model is applied in induced over voltage withstand test circuit theory figure;
Fig. 3 is the circuit theory diagrams of the utility model;
Fig. 4 is the structural representation of the utility model.
Among the figure, metal shell 1, inductance coil head end 2, inductance coil terminal 3; Coil 4, the first taps 5, the second taps 6, the three taps 7; Iron core 8, low pressure adjustable compensation inductance 9, low pressure adjustable compensation inductance 10; Induced over voltage withstand test appearance 11 is tried voltage transformer high-tension coil head end direct-to-ground capacitance 12, inductance coil tap A1, A2, A3.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is explained further details, but the protection range of the utility model is not limit by embodiment.
As depicted in figs. 1 and 2; The utility model adjustable compensation inductance; Its structure is following: be provided with three inductance coil tap A1, A2, A3, three inductance coil taps are connected with coil 4 through lead respectively, and the coil 4 that has iron core 8 is arranged in the metal shell 1; Coil 4 has certain distance with metal shell 1, and three inductance coil taps are installed on the top outer wall of metal shell 1 with inductance coil head end 2 and inductance coil end 3.First tap 5 is located at 6/7 position of inductance coil 4 length in three inductance coil taps, and second tap 6 is located at 5/7 position of inductance coil 4 length, and 4/7 position of inductance coil 4 length is established in the 3rd tap 7.Described coil 4 is connected on metal shell 1 base through support.
The utility model adjustable compensation inductor design is iron core 8 formula structures, self cool.The adjustable compensation inductance can use separately, or the parallel connection adding is used by two non-pressurised coils of examination voltage transformer respectively, and also three of inductance capable of using inductance coil taps are applied in a flexible way.Metal shell 1 have enough mechanical strengths, necessary heat-sinking capability and with the insulation margin of coil.The inductance insulating support has enough stabilitys, can bear percussions such as transportation, loading and unloading.
When the adjustable compensation inductance was used fully, the compensating inductance amount was maximum; When with the 3rd tap 7 the compensating inductance coil hour, the compensating inductance amount is minimum.
The equivalence of being said so by 12 strictnesses of examination voltage transformer high-tension coil head end direct-to-ground capacitance described in the utility model is following three partition capacitances:
1, tried one section pipe of voltage transformer high-tension coil head end to disconnecting link bus shell and other two is reached the earth capacitance major part mutually;
2, tried voltage transformer high-tension coil each several part to shell and iron core electric capacity;
3, tried voltage transformer high-tension coil turn-to-turn and layer capacitance.
Claims (3)
1. low pressure adjustable compensation inductance; It is characterized in that it is provided with three inductance coil taps; Three inductance coil taps are connected with coil (4) through lead respectively; Coil (4) is arranged in the metal shell (1), and coil (4) and metal shell (1) have certain insulation distance, and three inductance coil taps are located on the metal shell (1) with inductance coil head end (2) and inductance coil end (3).
2. low pressure adjustable compensation inductance according to claim 1; It is characterized in that described three inductance coil taps; First tap (5) is located at 6/7 position of inductance coil (4) length; Second tap (6) is located at 5/7 position of inductance coil (4) length, and the 3rd tap (7) is located at 4/7 position of inductance coil (4) length.
3. low pressure adjustable compensation inductance according to claim 1 is characterized in that described coil (4) is fixedly connected on metal shell (1) base through support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201057427U CN202495328U (en) | 2012-03-20 | 2012-03-20 | Low-voltage adjustable compensating inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201057427U CN202495328U (en) | 2012-03-20 | 2012-03-20 | Low-voltage adjustable compensating inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202495328U true CN202495328U (en) | 2012-10-17 |
Family
ID=47001541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201057427U Expired - Lifetime CN202495328U (en) | 2012-03-20 | 2012-03-20 | Low-voltage adjustable compensating inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202495328U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558530A (en) * | 2013-11-20 | 2014-02-05 | 国家电网公司 | Secondary adjustable compensating inductor for PT voltage withstand induction for GIS |
-
2012
- 2012-03-20 CN CN2012201057427U patent/CN202495328U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558530A (en) * | 2013-11-20 | 2014-02-05 | 国家电网公司 | Secondary adjustable compensating inductor for PT voltage withstand induction for GIS |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20130201 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130201 Address after: 110811 eight Heping Street, 94 Heping Street, Liaoning, Shenyang Patentee after: Liaoning Shenyang Electric Power Supply Co., Ltd. Patentee after: State Grid Corporation of China Address before: 110811 eight Heping Street, 94 Heping Street, Liaoning, Shenyang Patentee before: Liaoning Shenyang Electric Power Supply Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121017 |