CN203981862U - Capacitance type potential transformer automated watch-keeping facility - Google Patents
Capacitance type potential transformer automated watch-keeping facility Download PDFInfo
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- CN203981862U CN203981862U CN201420284176.XU CN201420284176U CN203981862U CN 203981862 U CN203981862 U CN 203981862U CN 201420284176 U CN201420284176 U CN 201420284176U CN 203981862 U CN203981862 U CN 203981862U
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- potential transformer
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Abstract
The utility model provides a kind of capacitance type potential transformer automated watch-keeping facility, and it comprises three-phase voltage collector, wave filter, voltage comparator and the warning device connecting successively.By three-phase voltage collector, from capacitance type potential transformer secondary side, obtain three-phase voltage, three-phase voltage is device after filtering, obtain three-phase fundamental voltage, input voltage comparer must be taken office the difference of two-phase voltage effective value, by three voltage difference input warning devices that obtain, the threshold value that any voltage difference reaches setting is trigger alarm, sensitive to defect reaction monitoring, guarantees the safe and reliable operation of electrical network.
Description
Technical field
The utility model relates to automated watch-keeping facility, specifically, relates to capacitance type potential transformer automated watch-keeping facility.
Background technology
Capacitance type potential transformer is the voltage conversion device of current electric system widespread use, and high-voltage variable is changed to low-voltage for measuring and protection.Having there are a lot of capacitance type potential transformer electric capacity breakdown accidents in Shanxi Power Network, brings hidden danger to the safe and reliable operation of electrical network in recent years.To the method for capacitance type potential transformer condition diagnosing, be mainly infrared imaging diagnosis now, but infrared imaging diagnosis is because the focus detecting is subject to the impact of heat transfer path insensitive to defect reaction, also the example that has the discovery capacitance type potential transformer defect monitoring by secondary voltage, be generally to rely on monitor staff to monitor that secondary voltage changes judgement, the judgement of defect just relies on supervision personnel's technical merit and is easy to out in the cold like this.
Utility model content
(1) technical matters that will solve
The purpose of this utility model is to provide a kind of capacitance type potential transformer automated watch-keeping facility, thereby solve, infrared imaging diagnostic method is insensitive to defect reaction, secondary voltage monitors needs to rely on artificial easy unheeded problem.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of capacitance type potential transformer automated watch-keeping facility, it is characterized in that, it comprises three-phase voltage collector, wave filter, voltage comparator and the warning device connecting successively, three-phase voltage collector obtains three-phase voltage from capacitance type potential transformer secondary side, three-phase voltage is device after filtering, obtain three-phase fundamental voltage, input voltage comparer must be taken office the difference of two-phase voltage effective value, by three voltage differences input warning devices that obtain, the threshold value that any voltage difference reaches setting is trigger alarm.
(3) beneficial effect
The capacitance type potential transformer automated watch-keeping facility that the utility model provides, does not need to rely on monitor staff to monitor, has avoided the hidden danger causing because monitoring Personnel Skill Levels's deficiency or human error.The utility model capacitance type potential transformer automated watch-keeping facility obtains three-phase voltage by three-phase voltage collector from capacitance type potential transformer secondary side, three-phase voltage is device after filtering, obtain three-phase fundamental voltage, input voltage comparer must be taken office the difference of two-phase voltage effective value, by three voltage difference input warning devices that obtain, the threshold value that any voltage difference reaches setting is trigger alarm, sensitive to defect reaction monitoring, guarantees the safe and reliable operation of electrical network.
Accompanying drawing explanation
Fig. 1 is capacitance type potential transformer automated watch-keeping facility principle schematic described in the utility model;
In figure: 1, three-phase voltage collector, 2, wave filter, 3, voltage comparator, 4, warning device.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work, belongs to the scope that the utility model is protected.
The utility model embodiment provides a kind of capacitance type potential transformer running status automated watch-keeping facility.Measure warning circuit and comprise three-phase voltage collector 1, wave filter 2, voltage comparator 3 and warning device 4, three-phase voltage collector 1 obtains three-phase voltage from capacitance type potential transformer secondary side, three-phase voltage is device 2 after filtering, obtain three-phase fundamental voltage, input voltage comparer 3 must be taken office the difference of two-phase voltage effective value, by three voltage differences input warning devices 4 that obtain, the threshold value that any voltage difference reaches setting is trigger alarm.
The above; it is only embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (1)
1. a capacitance type potential transformer automated watch-keeping facility, it is characterized in that, it comprises three-phase voltage collector (1), wave filter (2), voltage comparator (3) and the warning device (4) connecting successively, three-phase voltage collector obtains three-phase voltage from capacitance type potential transformer secondary side, three-phase voltage is device after filtering, obtain three-phase fundamental voltage, input voltage comparer must be taken office the difference of two-phase voltage effective value, by three voltage differences input warning devices that obtain, the threshold value that any voltage difference reaches setting is trigger alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420284176.XU CN203981862U (en) | 2014-05-29 | 2014-05-29 | Capacitance type potential transformer automated watch-keeping facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420284176.XU CN203981862U (en) | 2014-05-29 | 2014-05-29 | Capacitance type potential transformer automated watch-keeping facility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203981862U true CN203981862U (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420284176.XU Expired - Fee Related CN203981862U (en) | 2014-05-29 | 2014-05-29 | Capacitance type potential transformer automated watch-keeping facility |
Country Status (1)
| Country | Link |
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| CN (1) | CN203981862U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106990380A (en) * | 2017-05-31 | 2017-07-28 | 国网河南省电力公司平顶山供电公司 | Live capacitance type potential transformer fault detection method |
| CN110542780A (en) * | 2018-05-28 | 2019-12-06 | 广东电网有限责任公司 | Chargeable CVT voltage live monitoring device |
| WO2024042290A1 (en) * | 2022-08-23 | 2024-02-29 | Electricite De France | Method and system for diagnosing voltage transformers |
-
2014
- 2014-05-29 CN CN201420284176.XU patent/CN203981862U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106990380A (en) * | 2017-05-31 | 2017-07-28 | 国网河南省电力公司平顶山供电公司 | Live capacitance type potential transformer fault detection method |
| CN110542780A (en) * | 2018-05-28 | 2019-12-06 | 广东电网有限责任公司 | Chargeable CVT voltage live monitoring device |
| WO2024042290A1 (en) * | 2022-08-23 | 2024-02-29 | Electricite De France | Method and system for diagnosing voltage transformers |
| FR3139201A1 (en) * | 2022-08-23 | 2024-03-01 | Electricite De France | Method and system for diagnosing voltage transformers |
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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: 20141203 Termination date: 20180529 |