CN202189126U - Detection device for transformer on-load tap-changer - Google Patents
Detection device for transformer on-load tap-changer Download PDFInfo
- Publication number
- CN202189126U CN202189126U CN2011202761583U CN201120276158U CN202189126U CN 202189126 U CN202189126 U CN 202189126U CN 2011202761583 U CN2011202761583 U CN 2011202761583U CN 201120276158 U CN201120276158 U CN 201120276158U CN 202189126 U CN202189126 U CN 202189126U
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- power supply
- test power
- test
- load tap
- changer
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- Expired - Lifetime
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- 238000001514 detection method Methods 0.000 title abstract description 5
- 238000012360 testing method Methods 0.000 claims abstract description 75
- 238000005259 measurement Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract 2
- 230000002950 deficient Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
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Abstract
The utility model discloses a whether can accurate judgement on-load tap-changer has detection device for transformer on-load tap-changer of defect. The detection device comprises a test host and a test power supply, wherein the test power supply comprises a direct current test power supply and an alternating current test power supply, and the direct current test power supply and the alternating current test power supply are respectively and electrically connected to the test host. When the characteristics of the on-load tap-changer are tested on site, the direct-current test power supply and the alternating-current test power supply are started in sequence, so that a relatively correct overall-process waveform map and an excessive resistance value of switching of the on-load tap-changer can be obtained, and whether the on-load tap-changer has defects or not can be accurately judged. The test host is connected with the test power supply through a detachable structure, so that the test power supply can be maintained and replaced more conveniently. The direct current test power supply and the alternating current test power supply are both three-phase power supplies, so that the test result is more accurate. Is suitable for popularization and application in the field of detection equipment.
Description
Technical field
The utility model relates to the checkout equipment field, especially a kind of pick-up unit that is used for on-load tap changers of transformers.
Background technology
After the transformer that has a load ratio bridging switch installs; Usually need test the acting characteristic of load ratio bridging switch at the scene; Generally judge through the overall process oscillogram of detection load ratio bridging switch switching and the excessive resistance value of load ratio bridging switch whether load ratio bridging switch exists defective, to guarantee that transformer can safe operation.At present, the pick-up unit that is used for on-load tap changers of transformers has two kinds usually, and a kind of is the single flow pick-up unit; Comprise Test Host and DC test power supply, DC test power supply and Test Host are monolithic construction, though this single flow pick-up unit can be measured excessive resistance value more accurately; But in use still have following problem: the oscillogram that the single flow pick-up unit obtains in test process is inaccurate, occurs unusual waveforms figure easily, in order to make the oscillogram of obtaining accurate as much as possible; Usually all be that load ratio bridging switch is hung out inspection, test repeatedly, from obtain several oscillograms, obvious abnormal waveforms figure rejected; The test waveform figure that then remaining oscillogram and load ratio bridging switch manufacturer is provided compares, thereby whether the characteristic that draws load ratio bridging switch is normal, still; Because the oscillogram that provides of load ratio bridging switch manufacturer makes an experiment to naked switch and draws, the oscillogram that oscillogram of measuring with the single flow pick-up unit at the scene and manufacturer provide differs greatly, and the comparative analysis difficulty is bigger; Can't judge accurately whether load ratio bridging switch exists defective; Have bigger potential safety hazard, in addition, DC test power supply and Test Host are monolithic construction; In case the DC test power supply breaks down, maintain and replace is difficulty relatively.Second kind is the AC system pick-up unit, comprises Test Host and alternating-current measurement power supply, and alternating-current measurement power supply and Test Host are monolithic construction; Though the AC system pick-up unit can obtain oscillogram comparatively accurately; But can't accurately measure the excessive resistance value of load ratio bridging switch, can't judge accurately also whether load ratio bridging switch exists defective, the bigger potential safety hazard of same existence; In addition; Alternating-current measurement power supply and Test Host are monolithic construction, in case the alternating-current measurement power supply breaks down, maintain and replace is difficulty relatively.
The utility model content
The utility model technical matters to be solved provides a kind ofly can judge accurately whether load ratio bridging switch exists the pick-up unit that is used for on-load tap changers of transformers of defective.
The utility model solves the technical scheme that its technical matters adopted: this is used for the pick-up unit of on-load tap changers of transformers; Comprise Test Host and testing power supply; Said testing power supply comprises DC test power supply and alternating-current measurement power supply, and said DC test power supply and alternating-current measurement power supply are connected electrically on the Test Host respectively.
Further be that said Test Host is connected through demountable structure with testing power supply.
Further be that said DC test power supply and alternating-current measurement power supply are three-phase supply.
The beneficial effect of the utility model is: through on Test Host, being electrically connected DC test power supply and alternating-current measurement power supply respectively; When at the scene the characteristic of load ratio bridging switch being tested; Successively start DC test power supply and alternating-current measurement power supply; Just can access overall process waveform collection of illustrative plates and excessive resistance value that comparatively correct load ratio bridging switch switches, thereby can judge accurately whether load ratio bridging switch exists defective, avoids burying potential safety hazard.Test Host is connected through demountable structure with testing power supply, eaily the maintain and replace testing power supply.Said DC test power supply and alternating-current measurement power supply are three-phase supply, can make test result more accurate.
Description of drawings
Fig. 1 is the pick-up unit structural representation that the utility model is used for on-load tap changers of transformers;
Be labeled as among the figure: Test Host 1, DC test power supply 2, alternating-current measurement power supply 3.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
As shown in Figure 1; This is used for the pick-up unit of on-load tap changers of transformers; Comprise Test Host 1 and testing power supply, said testing power supply comprises DC test power supply 2 and alternating-current measurement power supply 3, and said DC test power supply 2 is connected electrically in respectively on the Test Host 1 with alternating-current measurement power supply 3.Through on Test Host 1, being electrically connected DC test power supply 2 and alternating-current measurement power supply 3 respectively; When at the scene the characteristic of load ratio bridging switch being tested; Successively start DC test power supply 2 and alternating-current measurement power supply 3; Just can obtain the overall process waveform collection of illustrative plates of two width of cloth load ratio bridging switches switching and the excessive resistance value of two load ratio bridging switches; Because the overall process waveform collection of illustrative plates that the load ratio bridging switch that adopts alternating-current measurement power supply 3 to obtain switches is comparatively accurate; Adopt the excessive resistance value of the load ratio bridging switch that DC test power supply 2 obtains comparatively accurate, the oscillogram that overall process waveform collection of illustrative plates that the load ratio bridging switch that adopts alternating-current measurement power supply 3 to obtain is switched and manufacturer provide compares, and will adopt the excessive resistance value of the load ratio bridging switch that DC test power supply 2 obtains and the excessive resistance value that manufacturer provides to compare simultaneously; Can judge accurately in conjunction with both comparing results whether load ratio bridging switch exists defective, avoids burying potential safety hazard.Said Test Host 1 is connected through demountable structure with testing power supply, maintain and replace testing power supply eaily, and said demountable structure can be plug miscellaneous or socket etc.Said DC test power supply 2 can adopt common power supply with alternating-current measurement power supply 3, but in order to make test result more accurate, said DC test power supply 2 is three-phase supply with alternating-current measurement power supply 3.
Claims (3)
1. the pick-up unit that is used for on-load tap changers of transformers; Comprise Test Host (1) and testing power supply; It is characterized in that: said testing power supply comprises DC test power supply (2) and alternating-current measurement power supply (3), and said DC test power supply (2) is connected electrically in respectively on the Test Host (1) with alternating-current measurement power supply (3).
2. the pick-up unit that is used for on-load tap changers of transformers as claimed in claim 1 is characterized in that: said Test Host (1) is connected through demountable structure with testing power supply.
3. according to claim 1 or claim 2 the pick-up unit that is used for on-load tap changers of transformers, it is characterized in that: said DC test power supply (2) is three-phase supply with alternating-current measurement power supply (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202761583U CN202189126U (en) | 2011-08-01 | 2011-08-01 | Detection device for transformer on-load tap-changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202761583U CN202189126U (en) | 2011-08-01 | 2011-08-01 | Detection device for transformer on-load tap-changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202189126U true CN202189126U (en) | 2012-04-11 |
Family
ID=45920566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202761583U Expired - Lifetime CN202189126U (en) | 2011-08-01 | 2011-08-01 | Detection device for transformer on-load tap-changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202189126U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483626A (en) * | 2014-12-30 | 2015-04-01 | 成都恒锐智科数字技术有限公司 | Device and system for testing characteristics of transformer on-load tap-changer |
| CN110763992A (en) * | 2019-11-28 | 2020-02-07 | 国网河北省电力有限公司电力科学研究院 | AC/DC comprehensive test method for on-load tap-changer of large transformer |
-
2011
- 2011-08-01 CN CN2011202761583U patent/CN202189126U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483626A (en) * | 2014-12-30 | 2015-04-01 | 成都恒锐智科数字技术有限公司 | Device and system for testing characteristics of transformer on-load tap-changer |
| CN104483626B (en) * | 2014-12-30 | 2017-08-08 | 国网四川省电力公司电力科学研究院 | On-load tap changers of transformers characteristic test device and system |
| CN110763992A (en) * | 2019-11-28 | 2020-02-07 | 国网河北省电力有限公司电力科学研究院 | AC/DC comprehensive test method for on-load tap-changer of large transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120411 |