CN203164332U - Transformer DC magnetic bias characteristic testing apparatus - Google Patents
Transformer DC magnetic bias characteristic testing apparatus Download PDFInfo
- Publication number
- CN203164332U CN203164332U CN 201320141617 CN201320141617U CN203164332U CN 203164332 U CN203164332 U CN 203164332U CN 201320141617 CN201320141617 CN 201320141617 CN 201320141617 U CN201320141617 U CN 201320141617U CN 203164332 U CN203164332 U CN 203164332U
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- transformer
- test
- magnetic bias
- bias characteristic
- testing
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Abstract
The utility model relates to a transformer DC magnetic bias characteristic testing apparatus, which comprises an AC power supply, an intermediate transformer, a test transformer, a signal acquisition module, a DC power supply, a test industrial personal computer and a test load, wherein the AC power supply, the intermediate transformer, the test transformer and the test load are sequentially connected, the DC power supply is connected between the test transformer and the test load, the signal acquisition module is connected with the test transformer, and the test industrial personal computer is connected with the signal acquisition module. Compared with the prior art, the transformer DC magnetic bias characteristic testing apparatus has the advantages of high accuracy, flexible operation and the like.
Description
Technical field
The utility model relates to a kind of transformer testing device, especially relates to a kind of transformer DC magnetic bias characteristic test apparatus.
Background technology
The earth potential that sun magnetic storm, direct current transportation, metallurgy and track traffic etc. cause changes, constitute DC loop through transmission line of electricity, coil kind equipment winding earth point, make transformer, mutual inductor etc. the DC magnetic biasing phenomenon occur, cause the operational outfit noise to increase, vibrate problems such as aggravation and local overheating, and mains by harmonics increase, loss are increased, operation of power networks is constituted adverse effect.
Though the existing power transformer has the ability of certain tolerance DC magnetic biasing, but the ability to the tolerance DC magnetic biasing of power transformer under the situation of the DC current of the setting of flowing through does not have corresponding verifying attachment, the check of the tolerance DC magnetic biasing ability before therefore the existing power transformer can't be finished and dispatch from the factory, and untested power transformer may cause equipment failure because of tolerance DC magnetic biasing scarce capacity when entering in the real work after dispatching from the factory.
Summary of the invention
The purpose of this utility model is exactly the transformer DC magnetic bias characteristic test apparatus that a kind of accuracy height, flexible operation are provided for the defective that overcomes above-mentioned prior art existence.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of transformer DC magnetic bias characteristic test apparatus, comprise AC power, intermediate transformer, testing transformer, signals collecting assembly, direct supply, test industrial computer and test load, described AC power, intermediate transformer, testing transformer, test load connect successively, described direct supply is connected between testing transformer and the test load, described signals collecting assembly is connected with testing transformer, and described test industrial computer is connected with the signals collecting assembly.
Described signals collecting assembly involving vibrations sensor, optical fiber temperature-measurement device and inductive coil.
Described testing transformer comprises winding, iron core and tank wall, and described vibration transducer is located on the winding, and described optical fiber temperature-measurement device is located on the iron core, and described inductive coil is located on the tank wall.
Described direct supply comprises power circuit and the adjustable resistance that is connected, and this direct supply is connected between the neutral point of testing transformer secondary side and test load.
Described test load is shunt reactor.
Compared with prior art, vibration characteristics, temperature field and the stray field distribution character of transformer when the utility model is analyzed DC magnetic biasing by place vibration transducer, optical fiber temperature-measurement device and inductive coil at testing transformer winding, iron core and tank wall, thereby obtain the DC magnetic biasing characteristic of testing transformer, have advantages such as measurement accuracy height, flexible operation.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.Present embodiment is that prerequisite is implemented with technical solutions of the utility model, provided detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.
As shown in Figure 1, a kind of transformer DC magnetic bias characteristic test apparatus, comprise AC power 1, intermediate transformer 2, testing transformer 3, signals collecting assembly 4, direct supply 5, test industrial computer 6 and test load 7, described AC power 1, intermediate transformer 2, testing transformer 3, test load 7 connect successively, described direct supply 5 is connected between testing transformer 3 and the test load 7, described signals collecting assembly 4 is connected with testing transformer 3, and described test industrial computer 6 is connected with signals collecting assembly 4.Described test load 7 is shunt reactor.
Described signals collecting assembly involving vibrations sensor, optical fiber temperature-measurement device and inductive coil, vibration transducer is located on the winding of testing transformer, and the optical fiber temperature-measurement device is located on the iron core, and inductive coil is located on the tank wall.Vibration transducer, optical fiber temperature-measurement device and inductive coil be vibration signal, temperature signal and the electromagnetic signal of acquisition test transformer respectively, and with signal be transferred to the test industrial computer 6, vibration characteristics, temperature field and the stray field distribution character of transformer when test industrial computer 6 is analyzed DC magnetic biasing, thereby obtain the DC magnetic biasing characteristic of testing transformer, and be presented on the test industrial computer.
Described direct supply 5 comprises power circuit and the adjustable resistance R that is connected, and power circuit is made up of accumulator E, capacitor C and inductance L.This direct supply 5 is connected between the neutral point of testing transformer 3 secondary sides and test load 7, DC current can be by changing the size that adjustable resistance R changes the DC component of injecting by the loop injection test transformer between the neutral point of testing transformer secondary side and shunt reactor.A1, A2 are reometer among the figure.
Claims (5)
1. transformer DC magnetic bias characteristic test apparatus, it is characterized in that, comprise AC power, intermediate transformer, testing transformer, signals collecting assembly, direct supply, test industrial computer and test load, described AC power, intermediate transformer, testing transformer, test load connect successively, described direct supply is connected between testing transformer and the test load, described signals collecting assembly is connected with testing transformer, and described test industrial computer is connected with the signals collecting assembly.
2. a kind of transformer DC magnetic bias characteristic test apparatus according to claim 1 is characterized in that, described signals collecting assembly involving vibrations sensor, optical fiber temperature-measurement device and inductive coil.
3. a kind of transformer DC magnetic bias characteristic test apparatus according to claim 2, it is characterized in that, described testing transformer comprises winding, iron core and tank wall, described vibration transducer is located on the winding, described optical fiber temperature-measurement device is located on the iron core, and described inductive coil is located on the tank wall.
4. a kind of transformer DC magnetic bias characteristic test apparatus according to claim 1, it is characterized in that, described direct supply comprises power circuit and the adjustable resistance that is connected, and this direct supply is connected between the neutral point of testing transformer secondary side and test load.
5. a kind of transformer DC magnetic bias characteristic test apparatus according to claim 1 is characterized in that, described test load is shunt reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320141617 CN203164332U (en) | 2013-03-26 | 2013-03-26 | Transformer DC magnetic bias characteristic testing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320141617 CN203164332U (en) | 2013-03-26 | 2013-03-26 | Transformer DC magnetic bias characteristic testing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203164332U true CN203164332U (en) | 2013-08-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320141617 Expired - Lifetime CN203164332U (en) | 2013-03-26 | 2013-03-26 | Transformer DC magnetic bias characteristic testing apparatus |
Country Status (1)
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| CN (1) | CN203164332U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237836A (en) * | 2014-09-05 | 2014-12-24 | 北京铁道工程机电技术研究所有限公司 | Direct-current bias magnetic performance test device for voltage mutual inductor |
| CN104330662A (en) * | 2014-10-23 | 2015-02-04 | 中国南方电网有限责任公司电网技术研究中心 | Testing device and testing method for direct-current magnetic bias of converter transformer |
| CN105450007A (en) * | 2015-12-09 | 2016-03-30 | 中国电力科学研究院 | Power supply for direct current magnetic biasing tests on transformers |
| CN106019050A (en) * | 2016-05-24 | 2016-10-12 | 山东达驰电气有限公司 | Test circuit and method under DC bias effect of transformers |
| CN107561377A (en) * | 2016-06-30 | 2018-01-09 | 广州西门子变压器有限公司 | The detection method of D.C. magnetic biasing in transformer |
| 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 |
| CN113447734A (en) * | 2020-03-25 | 2021-09-28 | 许继集团有限公司 | DC magnetic bias injection test device |
-
2013
- 2013-03-26 CN CN 201320141617 patent/CN203164332U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237836A (en) * | 2014-09-05 | 2014-12-24 | 北京铁道工程机电技术研究所有限公司 | Direct-current bias magnetic performance test device for voltage mutual inductor |
| CN104330662A (en) * | 2014-10-23 | 2015-02-04 | 中国南方电网有限责任公司电网技术研究中心 | Testing device and testing method for direct-current magnetic bias of converter transformer |
| CN104330662B (en) * | 2014-10-23 | 2018-03-23 | 中国南方电网有限责任公司电网技术研究中心 | The experimental rig and method of a kind of converter transformer DC magnetic bias |
| CN105450007A (en) * | 2015-12-09 | 2016-03-30 | 中国电力科学研究院 | Power supply for direct current magnetic biasing tests on transformers |
| CN106019050A (en) * | 2016-05-24 | 2016-10-12 | 山东达驰电气有限公司 | Test circuit and method under DC bias effect of transformers |
| CN107561377A (en) * | 2016-06-30 | 2018-01-09 | 广州西门子变压器有限公司 | The detection method of D.C. magnetic biasing in transformer |
| 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 |
| CN113447734A (en) * | 2020-03-25 | 2021-09-28 | 许继集团有限公司 | DC magnetic bias injection test device |
| CN113447734B (en) * | 2020-03-25 | 2024-04-12 | 许继集团有限公司 | DC magnetic bias current injection test device |
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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: 20130828 |