CN204129108U - A kind of semi-insulated voltage transformer once winding current monitoring device - Google Patents
A kind of semi-insulated voltage transformer once winding current monitoring device Download PDFInfo
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- CN204129108U CN204129108U CN201420676772.2U CN201420676772U CN204129108U CN 204129108 U CN204129108 U CN 204129108U CN 201420676772 U CN201420676772 U CN 201420676772U CN 204129108 U CN204129108 U CN 204129108U
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- current sensor
- insulated voltage
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Abstract
A kind of semi-insulated voltage transformer once winding current monitoring device, this device by responding to punched-type active electric current sensor (1), hold (3) through current sensor (1) sensing hole ground connection (4) through the N of semi-insulated voltage transformer (2) windings or connect the lead-in wire (6) of a resonance eliminator (5), power module (7) forms; The power supply of power module (7) is provided by the Secondary Winding (9) of 220V cabinet power supply (8) or semi-insulated voltage transformer (2), through Transformer Rectifier module (10), battery module (11), for induction punched-type active electric current sensor (1); Induction punched-type active electric current sensor (1) is provided with terminals (12) and power supply terminal (13).The utility model can realize the Real-Time Monitoring of semi-insulated voltage transformer once winding current, have install that convenient, transplantability is strong, once winding current can Real-Time Monitoring, do not affect the remarkable advantages such as monitoring target operation.
Description
Technical field
The utility model belongs to operation electrical equipment parameter monitoring field, is particularly useful for the current parameters monitoring of the semi-insulated voltage transformer winding run.
Background technology
In the position such as transformer station, switchyard of distribution network systems, semi-insulated voltage transformer (VT) can be configured, for monitoring every phase-to-ground voltage.For the protection of this type of voltage transformer (VT), generally realize with fuse.
In the distribution network systems of actual motion, because of the reason such as resonance, harmonic wave, can cause increasing through voltage transformer (VT) winding electric current over the ground, cause the frequent fusing phenomenon of fuse.
Fuse is a kind of Thermal protection type equipment, and its protection requires to be exactly the heating that electric current causes.Frequency for fuse melts phenomenon, analyzing from the excitation property angle changing of voltage transformer (VT) is a kind of indirect mode, utilize semi-insulated voltage transformer winding N to hold ground connection or the actual conditions through a resonance eliminator ground connection, more directly can react the fuse molten reason occurred frequently by the curent change of monitoring a winding.
Based on above-mentioned situation and present situation, propose a kind of semi-insulated voltage transformer once winding current monitoring device thinking, and be achieved by technological means, to solve the practical problems that field measurement and crash analysis are encountered.
Utility model content
For the protection voltage transformer (VT) fuse molten phenomenon frequently that distribution network systems often occurs; utilize semi-insulated voltage transformer winding N to hold ground connection or the condition through a resonance eliminator ground connection, the curent change proposed by monitoring a winding analyzes the technical thought of molten reason frequently.The utility model proposes layout and the power supply solution of active electric current sensor.
The utility model is realized by following technical proposal.
A kind of semi-insulated voltage transformer once winding current monitoring device, the utility model feature is: this device by responding to punched-type active electric current sensor, hold through induction punched-type active electric current sensor sensing hole ground connection through the N of a semi-insulated voltage transformer winding or connect the lead-in wire of a resonance eliminator, power module forms; The power supply of power module is provided by the Secondary Winding of 220V cabinet power supply or semi-insulated voltage transformer, through Transformer Rectifier module, battery module, for induction punched-type active electric current sensor; Induction punched-type active electric current sensor is provided with terminals and power supply terminal.
The utility model content is set forth further below in conjunction with accompanying drawing and example.
Accompanying drawing explanation
Fig. 1 is the utility model apparatus structure schematic diagram.
Number in the figure is: 1, respond to punched-type active electric current sensor; 2, semi-insulated voltage transformer; 3, the N end of a semi-insulated voltage transformer winding; 4; 5, a resonance eliminator; 6, go between; 7, power module; 8,220V cabinet power supply; 9, Secondary Winding; 10, Transformer Rectifier module; 11, battery module; 12, terminals; 13, power supply terminal.
Embodiment
A kind of semi-insulated voltage transformer once winding current monitoring device, the utility model feature is:
This device by responding to punched-type active electric current sensor 1, hold 3 through induction punched-type active electric current sensor 1 sensing hole ground connection 4 through the N of semi-insulated voltage transformer 2 windings or connect the lead-in wire 6 of a resonance eliminator 5, power module 7 forms; The power supply of power module 7 is provided by the Secondary Winding 9 of 220V cabinet power supply 8 or semi-insulated voltage transformer 2, through Transformer Rectifier module 10, battery module 11, for induction punched-type active electric current sensor 1; Induction punched-type active electric current sensor 1 is provided with terminals 12 and power supply terminal 13.
See Fig. 1, the figure shows apparatus structure schematic diagram.In figure, the N end 3 of semi-insulated voltage transformer 2 windings is connected by lead-in wire 6 with ground 4 end or resonance eliminator 5 end, and lead-in wire 6 is through the sensing hole of induction punched-type active electric current sensor 1.The power module 7 of being powered by the Secondary Winding 9 of 220V cabinet power supply 8 or semi-insulated voltage transformer 2, inside comprises Transformer Rectifier module 10, and can maintain the battery module 11 of several minutes supplying power for outside abilities after guarantee 8,9 power interruption.The power supply terminal 13 of power module 7 on induction punched-type active electric current sensor 1 powers the normal operation ensureing active current sensor, can be obtained a winding real-time current parameter of operating semi-insulated voltage transformer 2 by the terminals 12 on induction punched-type active electric current sensor 1.
Claims (1)
1. a semi-insulated voltage transformer once winding current monitoring device, is characterized in that: this device by responding to punched-type active electric current sensor (1), hold (3) through current sensor (1) sensing hole ground connection (4) through the N of semi-insulated voltage transformer (2) windings or connect the lead-in wire (6) of a resonance eliminator (5), power module (7) forms; The power supply of power module (7) is provided by the Secondary Winding (9) of 220V cabinet power supply (8) or semi-insulated voltage transformer (2), through Transformer Rectifier module (10), battery module (11), for induction punched-type active electric current sensor (1); Induction punched-type active electric current sensor (1) is provided with terminals (12) and power supply terminal (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420676772.2U CN204129108U (en) | 2014-11-13 | 2014-11-13 | A kind of semi-insulated voltage transformer once winding current monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420676772.2U CN204129108U (en) | 2014-11-13 | 2014-11-13 | A kind of semi-insulated voltage transformer once winding current monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204129108U true CN204129108U (en) | 2015-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420676772.2U Active CN204129108U (en) | 2014-11-13 | 2014-11-13 | A kind of semi-insulated voltage transformer once winding current monitoring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204129108U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316750A (en) * | 2014-11-13 | 2015-01-28 | 云南电网公司电力科学研究院 | Semi-insulating voltage transformer primary winding current monitoring device |
-
2014
- 2014-11-13 CN CN201420676772.2U patent/CN204129108U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316750A (en) * | 2014-11-13 | 2015-01-28 | 云南电网公司电力科学研究院 | Semi-insulating voltage transformer primary winding current monitoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |