CN206134465U - Digital combined current and potential transformer - Google Patents
Digital combined current and potential transformer Download PDFInfo
- Publication number
- CN206134465U CN206134465U CN201621164972.5U CN201621164972U CN206134465U CN 206134465 U CN206134465 U CN 206134465U CN 201621164972 U CN201621164972 U CN 201621164972U CN 206134465 U CN206134465 U CN 206134465U
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- transformer
- current
- voltage transformer
- optical
- converter
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Abstract
The utility model discloses a digital combined current and potential transformer, including voltage transformer, current transformer, two processing circuit, optic fibre and photoelectric converter, voltage transformer with current transformer is all through one processing circuit connects optic fibre, the fiber connection photoelectric converter, processing circuit is including the first resistance, optoelectronic coupler, second resistance, adc and the electric optical converter that connect gradually, first ohmic connection voltage transformer or current transformer, the electricity optical converter connect optic fibre. The utility model discloses very strong interference immunity has to effective isolation both sides equipment.
Description
Technical field
This utility model is related to voltage current transformer.
Background technology
With the development and the extension of power domain of electronic technology, where applied current transformer and voltage transformer more
Come more, therefore be designed with voltage, set of currents mould assembly transformer, and realize that digitized shows.But, existing this kind of transformer
Capacity of resisting disturbance is poor, while most design structure is more complicated, does not meet cost-effective consideration.
The content of the invention
The purpose of this utility model is to provide a kind of digitized current-voltage transformer, with very strong anti-interference
Property, and it is effectively isolated two side apparatus.
Realizing the technical scheme of above-mentioned purpose is：
A kind of digitized current-voltage transformer, including voltage transformer, current transformer, two signal processing electricity
Road, optical fiber and optical-electrical converter, wherein,
The voltage transformer and the current transformer connect the optical fiber by a signal processing circuit；
The optical fiber connects the optical-electrical converter；
The signal processing circuit includes first resistor, photoelectrical coupler, second resistance, the analog-digital converter being sequentially connected
And electrical to optical converter,
The first resistor connects the voltage transformer or the current transformer；
The electrical to optical converter connects the optical fiber.
In above-mentioned digitized current-voltage transformer, also include：To the voltage transformer, the Current Mutual Inductance
The power supply that device, two signal processing circuits and the optical-electrical converter are powered.
The beneficial effects of the utility model are：The design that this utility model passes through photoelectrical coupler, in removing power-off signal
Pass to subsequent conditioning circuit after interference again, effectively improve overall capacity of resisting disturbance.Meanwhile, this utility model by will collection electricity
Pressure, current signal in-situ digitalization, by fiber-optic transfer, it is ensured that accuracy and the digitized development of adaptation, improve practicality.
Description of the drawings
Fig. 1 is the structure chart of digitized current-voltage transformer of the present utility model.
Specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Refer to Fig. 1, digitized current-voltage transformer of the present utility model, including voltage transformer 1, Current Mutual Inductance
Device 2, two signal processing circuits 3, optical fiber 4 and optical-electrical converters 5.
The summation current transformer 2 of voltage transformer 1 connects optical fiber 4, the connection light of optical fiber 4 by a signal processing circuit 3
Electric transducer 5.
Signal processing circuit 3 includes that the first resistor 31 being sequentially connected, photoelectrical coupler 32, second resistance 33, modulus turn
Parallel operation 34 and electrical to optical converter 35.First resistor 31 connects voltage transformer 1 or current transformer 2.Electrical to optical converter 35 connects
Optical fiber 4.
Voltage transformer 1,2, two signal processing circuits 3 of current transformer and optical-electrical converter 5 are supplied by corresponding power supply
Electricity.
The voltage analog signal of the collection of voltage transformer 1 or the current analog signal of the collection of current transformer 2, Jing Guoguang
Electric coupler 32 to be removed and pass to analog-digital converter 34 after interference, is converted to digital signal, and electrical to optical converter 35 turns digital signal
Light pulse signal is turned to, then optical-electrical converter 5 is transferred to via optical fiber 4, be converted to digital data transmission and secondary set to follow-up
It is standby.
In this utility model, photoelectrical coupler 32 selects model LTV817-C.The model that analog-digital converter 34 is selected
AD7667.Electrical to optical converter 35 selects model LTX-510.Optical-electrical converter 5 selects model SFP-1GZXLC.
Above example is only for illustration of the utility model, rather than to restriction of the present utility model, relevant technical field
Technical staff, in the case of without departing from spirit and scope of the present utility model, various conversion or modification can also be made, because
The technical scheme of this all equivalent should also belong to category of the present utility model, should be limited by each claim.
Claims (2)
1. a kind of digitized current-voltage transformer, it is characterised in that including voltage transformer, current transformer, two letters
Number process circuit, optical fiber and optical-electrical converter, wherein,
The voltage transformer and the current transformer connect the optical fiber by a signal processing circuit；It is described
Optical fiber connects the optical-electrical converter；
The signal processing circuit includes first resistor, photoelectrical coupler, second resistance, analog-digital converter and the electricity being sequentially connected
Photoconverter,
The first resistor connects the voltage transformer or the current transformer；
The electrical to optical converter connects the optical fiber.
2. digitized current-voltage transformer according to claim 1, it is characterised in that also include：To the voltage
The power supply that transformer, the current transformer, two signal processing circuits and the optical-electrical converter are powered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621164972.5U CN206134465U (en) | 2016-11-01 | 2016-11-01 | Digital combined current and potential transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621164972.5U CN206134465U (en) | 2016-11-01 | 2016-11-01 | Digital combined current and potential transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206134465U true CN206134465U (en) | 2017-04-26 |
Family
ID=58575746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621164972.5U Active CN206134465U (en) | 2016-11-01 | 2016-11-01 | Digital combined current and potential transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206134465U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345096A (en) * | 2018-04-04 | 2019-10-18 | 长鑫存储技术有限公司 | Heat dissipation device, semiconductor production system and fault monitoring method of heat dissipation fan |
-
2016
- 2016-11-01 CN CN201621164972.5U patent/CN206134465U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345096A (en) * | 2018-04-04 | 2019-10-18 | 长鑫存储技术有限公司 | Heat dissipation device, semiconductor production system and fault monitoring method of heat dissipation fan |
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