CN204086464U - Partial discharge-free test transformer complete device for cable accessory test - Google Patents
Partial discharge-free test transformer complete device for cable accessory test Download PDFInfo
- Publication number
- CN204086464U CN204086464U CN201420493740.9U CN201420493740U CN204086464U CN 204086464 U CN204086464 U CN 204086464U CN 201420493740 U CN201420493740 U CN 201420493740U CN 204086464 U CN204086464 U CN 204086464U
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- transformer
- partial discharge
- test
- behind
- switch cavity
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- 238000012360 testing method Methods 0.000 title claims abstract description 31
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 238000002474 experimental method Methods 0.000 abstract 3
- 238000001914 filtration Methods 0.000 abstract 3
- 238000002955 isolation Methods 0.000 abstract 2
- 239000003990 capacitor Substances 0.000 abstract 1
- 230000008676 import Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Testing Relating To Insulation (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The utility model provides a cable accessories is experimental with no partial discharge test transformer integrated equipment, includes isolation transformer and voltage regulator, is connected with the circuit breaker behind the isolation transformer, is equipped with the contactor between circuit breaker and the voltage regulator, is connected with the compensation reactor behind the voltage regulator, is connected with oil gas transformer behind the compensation reactor, is equipped with the filtering reactance behind the oil gas transformer, and the parallel connection has switch chamber and square wave injection device behind the filtering reactance, is connected with capacitive voltage divider and coupling capacitor behind the switch chamber. Through increased filtering reactance in the system, can guarantee that output voltage's partial discharge volume accords with experimental data requirement, can protect the experiment transformer for the life extension of experiment transformer has guaranteed the result of use of experiment transformer.
Description
Technical field
The utility model relates to a kind of partial enlargement testing transformer, is specifically related to a kind of cable accessory test partial discharge-free test transformer complete equipment.
Background technology
The Vicissitude of China's HV cable accessories is divided into three Main Stage, from the full oil-filled cable annex that middle nineteen sixties in last century is the first stage to the early 1990s, the nineties first arrival is cross-linked the HV cable accessories stage used in combination for domestic oil-filled cable high pressure annex and import in 2000, so far domestic HV cable accessories progressively substituting import one cable accessory in the phase III in 2000, so far 220kV and above cable accessory still all adopt import, but start the phenomenon occurring substituting, start to develop a set of cable accessory test oil-SF6 testing transformer combined test apparatus in this case, this system can be used for the partial discharge test of 220kV and following cable accessory, AC voltage withstand test, in the technology contents that the producer manufacturing the-SF6 testing transformer that produces oil at present both at home and abroad announces, system office is high-volume generally less than 5pC, this can not be applicable to the test of HV cable accessories, when doing shelf depreciation, need beat square wave, at present, the main armrest normal moveout correction of the Square wave injection on market device, complex operation, inconvenient people operate, and add the difficulty of partial discharge test, can not well controls local discharge experimental result.
Summary of the invention
It is simple that the purpose of this utility model is to provide a kind of structure, easy to operate a kind of cable accessory test partial discharge-free test transformer complete equipment.
The technical solution of the utility model is: a kind of cable accessory test partial discharge-free test transformer complete equipment, comprise isolating transformer and pressure regulator, isolating switch is connected with after described isolating transformer, contactor is provided with between described isolating switch and pressure regulator, compensation reactor is connected with after described pressure regulator, oil gas transformer is connected with after described compensation reactor, filter reactance is provided with after described oil gas transformer, be parallel with switch cavity and square wave injecting device after described filter reactance, after described switch cavity, be connected with capacitive divider and coupling condenser.
The partial discharge quantity that described filter reactance controls output voltage is less than 1pC, and described filter reactance is between oil gas transformer and switch cavity.
Described square wave injecting device is electronic square wave injecting device, and described electronic square wave injecting device controls to be connected with capacitive divider by switch cavity.
Described switch cavity is interlock protection control model, and the number of described switch cavity is 2-5, and described switch cavity is connected by series connection.
The utility model has the advantages that: by adding filter reactance in systems in which, can ensure that the partial discharge quantity of output voltage meets experimental data requirement, can Protection transformer, the serviceable life of experimental transformer is extended, ensure that the result of use of testing transformer, injection square wave can be carried out by electronic square wave injecting device, the form of ripple is manually noted before can changing, improve the convenience of operation, make user more convenient when in use, the interlocking of switch cavity is arranged, can the safe application performance of protection circuit, regulating and controlling can be carried out for different operating modes, add the dirigibility of system.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1 is isolating transformer, 2 is pressure regulator, and 3 is isolating switch, and 4 is contactor, and 5 is compensation reactor, and 6 is oil gas transformer, and 7 is filter reactance, and 8 is switch cavity, and 9 is square wave injecting device.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further illustrated.
Partial discharge-free test transformer complete equipment are used in a kind of cable accessory test, comprise isolating transformer 1 and pressure regulator 2, isolating switch 3 is connected with after isolating transformer 1, contactor 4 is provided with between isolating switch 3 and pressure regulator 2, compensation reactor 5 is connected with after pressure regulator 2, oil gas transformer 6 is connected with after compensation reactor 5, filter reactance 7 is provided with after oil gas transformer 6, switch cavity 8 and square wave injecting device 9 is parallel with after filter reactance 7, capacitive divider and coupling condenser is connected with after switch cavity 8, the partial discharge quantity that filter reactance 7 controls output voltage is less than 1pC, filter reactance 7 is between oil gas transformer 6 and switch cavity 8, square wave injecting device 9 is electronic square wave injecting device, electronic square wave injecting device controls to be connected with capacitive divider by switch cavity, switch cavity 8 is interlock protection control model, the number of switch cavity 8 is 3, switch cavity 8 is connected by series connection.
Claims (4)
1. partial discharge-free test transformer complete equipment are used in a cable accessory test, comprise isolating transformer and pressure regulator, it is characterized in that: after described isolating transformer, be connected with isolating switch, contactor is provided with between described isolating switch and pressure regulator, compensation reactor is connected with after described pressure regulator, oil gas transformer is connected with after described compensation reactor, filter reactance is provided with after described oil gas transformer, be parallel with switch cavity and square wave injecting device after described filter reactance, after described switch cavity, be connected with capacitive divider and coupling condenser.
2. a kind of cable accessory test partial discharge-free test transformer complete equipment according to claim 1, it is characterized in that: the partial discharge quantity that described filter reactance controls output voltage is less than 1pC, and described filter reactance is between oil gas transformer and switch cavity.
3. a kind of cable accessory test partial discharge-free test transformer complete equipment according to claim 1, it is characterized in that: described square wave injecting device is electronic square wave injecting device, described electronic square wave injecting device controls to be connected with capacitive divider by switch cavity.
4. a kind of cable accessory test partial discharge-free test transformer complete equipment according to claim 1; it is characterized in that: described switch cavity is interlock protection control model; the number of described switch cavity is 2-5, and described switch cavity is connected by series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420493740.9U CN204086464U (en) | 2014-08-29 | 2014-08-29 | Partial discharge-free test transformer complete device for cable accessory test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420493740.9U CN204086464U (en) | 2014-08-29 | 2014-08-29 | Partial discharge-free test transformer complete device for cable accessory test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204086464U true CN204086464U (en) | 2015-01-07 |
Family
ID=52179165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420493740.9U Expired - Fee Related CN204086464U (en) | 2014-08-29 | 2014-08-29 | Partial discharge-free test transformer complete device for cable accessory test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204086464U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107870270A (en) * | 2016-09-27 | 2018-04-03 | 广州西门子变压器有限公司 | Direct current magnetic bias test equipment of transformer |
-
2014
- 2014-08-29 CN CN201420493740.9U patent/CN204086464U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107870270A (en) * | 2016-09-27 | 2018-04-03 | 广州西门子变压器有限公司 | Direct current magnetic bias test equipment of transformer |
| CN107870270B (en) * | 2016-09-27 | 2023-06-13 | 广州西门子能源变压器有限公司 | DC magnetic bias test equipment for transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 |