CN205720514U - Minitype CT polarity tester - Google Patents
Minitype CT polarity tester Download PDFInfo
- Publication number
- CN205720514U CN205720514U CN201620419119.7U CN201620419119U CN205720514U CN 205720514 U CN205720514 U CN 205720514U CN 201620419119 U CN201620419119 U CN 201620419119U CN 205720514 U CN205720514 U CN 205720514U
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- 230000003750 conditioning effect Effects 0.000 claims description 7
- 238000012360 testing method Methods 0.000 abstract description 14
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009699 differential effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
nullThe utility model relates to power system test device，Specifically a kind of rational in infrastructure、Easy to carry、The minitype CT polarity tester of reliable operation，It is characterized in that being provided with controller、Power circuit、Pulse signal generator、Signal output apparatus、Secondary side data acquisition circuit、Comparison circuit、Display circuit、Display，Its middle controller respectively with power circuit、Pulse signal generator、Secondary side data acquisition circuit、Comparison circuit is connected，The input of signal output apparatus is connected with pulse signal generator，Output is provided with the binding post for being connected with primary side circuit，The output of comparison circuit is connected with display circuit，The output of display circuit is connected with display，The utility model is compared with prior art，Have rational in infrastructure、Easy to carry、Wiring is simple、The test result intuitively significant advantage such as accurately.
Description
Technical field
The utility model relates to power system test device, specifically a kind of rational in infrastructure, easy to carry, minitype CT polarity tester of reliable operation.
Background technology
After transformer station changes CT, maintainer was required for being judged the polarity of CT before carrying out secondary connection.Conventional current transformer polarity, all according to subtractive polarity principle mark, is passed through the primary and secondary side winding homopolar end period of the day from 11 p.m. to 1 a.m when simultaneously, and in iron core, consequent magnetic flux is equidirectional.Therefore, when system primary current flows into from homopolar end, current transformer secondary current flows out from the homopolar end of multiple change winding.The electric current of relay protection sampling is by walking direction.For main transformer, three is pendant polar necessary consistent, or positive polarity, or reversed polarity otherwise poor stream is very big, differential action.For circuit, if system has bus differential protection or circuit band direction protection, then must beat polarity, if system has bus differential protection, the main transformer of the line segregation of all accesses and the female difference of access is pendant polar mustn't be consistent, otherwise female differential work.Accordingly, it is determined that the polarity of CT be correctly concern transformer station can a highly important link of safe and stable operation.
At present, it when testing CT polarity.Beating polarity is first to open the ground connection of electric current secondary, after carefully connecting the wire, touch, with positive test pencil, the polarity that CT sees the pointer walking direction CT of direct current table, test process needs repeatedly verify acquisition test result, there is the shortcomings such as inconvenient to carry, wiring is inconvenient, test speed is slow.
Content of the invention
The utility model is for shortcoming and defect present in prior art, it is proposed that a kind of rational in infrastructure, easy to carry, minitype CT polarity tester of reliable operation.
The utility model can be reached by following measures:
A kind of minitype CT polarity tester, it is characterized in that being provided with controller, power circuit, pulse signal generator, signal output apparatus, secondary side data acquisition circuit, comparison circuit, display circuit, display, its middle controller respectively with power circuit, pulse signal generator, secondary side data acquisition circuit, comparison circuit is connected, the input of signal output apparatus is connected with pulse signal generator, output is provided with the binding post for being connected with primary side circuit, the output of comparison circuit is connected with display circuit, the output of display circuit is connected with display.
The utility model is additionally provided with battery and solar panel, and battery is connected with power circuit respectively with solar panel, for providing electric power for device.
The utility model is additionally provided with power conditioning circuitry, and the output of power conditioning circuitry is connected with pulse signal generator, and control end is connected with controller.
Controller described in the utility model uses chip microcontroller, for controlling the duty of device.
In the utility model, power circuit is additionally provided with AC/DC power supply circuits, and the mu balanced circuit being connected with AC/DC power supply circuits.
The utility model is during using, the binding post of signal output apparatus output is connected with transformer primary side (i.e. high-pressure side), the input of secondary side data acquisition circuit is connected with secondary side (i.e. low-pressure side), then square-wave signal is produced by controller control wave generator, the on-off action of analog switch, the signal contrast that the signal that now secondary side data acquisition circuit is obtained by controller and pulse signal generator are exported, generating testing result, testing result can be by display display output.
The utility model compared with prior art, have rational in infrastructure, easy to carry, wiring is simple, the test result intuitively significant advantage such as accurate.
Brief description:
Accompanying drawing 1 is structured flowchart of the present utility model.
Reference: controller the 1st, power circuit the 2nd, pulse signal generator the 3rd, signal output apparatus the 4th, secondary side data acquisition circuit the 5th, comparison circuit the 6th, display circuit the 7th, display the 8th, power conditioning circuitry 9.
Detailed description of the invention:
Below in conjunction with the accompanying drawings the utility model is further described.
As shown in drawings, the utility model proposes a kind of minitype CT polarity tester, it is characterized in that being provided with controller 1, power circuit 2, pulse signal generator 3, signal output apparatus 4, secondary side data acquisition circuit 5, comparison circuit 6, display circuit 7, display 8, its middle controller 1 respectively with power circuit 2, pulse signal generator 3, secondary side data acquisition circuit 5, comparison circuit 6 is connected, the input of signal output apparatus 4 is connected with pulse signal generator 3, output is provided with the binding post for being connected with primary side circuit, the output of comparison circuit 6 is connected with display circuit 7, the output of display circuit 7 is connected with display 8.
The utility model is additionally provided with battery and solar panel, and battery is connected with power circuit respectively with solar panel, for providing electric power for device.
The utility model is additionally provided with power conditioning circuitry 9, and the output of power conditioning circuitry 9 is connected with pulse signal generator 3, and control end is connected with controller.
Controller 1 described in the utility model uses chip microcontroller, for controlling the duty of device.
In the utility model, power circuit is additionally provided with AC/DC power supply circuits, and the mu balanced circuit being connected with AC/DC power supply circuits.
The utility model is during using, the binding post of signal output apparatus output is connected with transformer primary side (i.e. high-pressure side), the input of secondary side data acquisition circuit is connected with secondary side (i.e. low-pressure side), then square-wave signal is produced by controller control wave generator, the on-off action of analog switch, the signal contrast that the signal that now secondary side data acquisition circuit is obtained by controller and pulse signal generator are exported, generating testing result, testing result can be by display display output.
The utility model compared with prior art, have rational in infrastructure, easy to carry, wiring is simple, the test result intuitively significant advantage such as accurate.
Claims (5)
1. a minitype CT polarity tester, it is characterized in that being provided with controller, power circuit, pulse signal generator, signal output apparatus, secondary side data acquisition circuit, comparison circuit, display circuit, display, its middle controller respectively with power circuit, pulse signal generator, secondary side data acquisition circuit, comparison circuit is connected, the input of signal output apparatus is connected with pulse signal generator, output is provided with the binding post for being connected with primary side circuit, the output of comparison circuit is connected with display circuit, the output of display circuit is connected with display.
2. a kind of minitype CT polarity tester according to claim 1, it is characterised in that being additionally provided with battery and solar panel, battery is connected with power circuit respectively with solar panel.
3. a kind of minitype CT polarity tester according to claim 1, it is characterised in that being additionally provided with power conditioning circuitry, the output of power conditioning circuitry is connected with pulse signal generator, and control end is connected with controller.
4. a kind of minitype CT polarity tester according to claim 1, it is characterised in that described controller uses chip microcontroller.
5. a kind of minitype CT polarity tester according to claim 1, it is characterised in that power circuit is additionally provided with AC/DC power supply circuits, and the mu balanced circuit being connected with AC/DC power supply circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620419119.7U CN205720514U (en) | 2016-05-10 | 2016-05-10 | Minitype CT polarity tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620419119.7U CN205720514U (en) | 2016-05-10 | 2016-05-10 | Minitype CT polarity tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205720514U true CN205720514U (en) | 2016-11-23 |
Family
ID=57304255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620419119.7U Expired - Fee Related CN205720514U (en) | 2016-05-10 | 2016-05-10 | Minitype CT polarity tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205720514U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110609203A (en) * | 2019-10-30 | 2019-12-24 | 中国南方电网有限责任公司超高压输电公司南宁局 | CT polarity detector and detection method thereof |
-
2016
- 2016-05-10 CN CN201620419119.7U patent/CN205720514U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110609203A (en) * | 2019-10-30 | 2019-12-24 | 中国南方电网有限责任公司超高压输电公司南宁局 | CT polarity detector and detection method thereof |
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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 |
Granted publication date: 20161123 Termination date: 20190510 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |