CN204832311U - Photoelectricity current sensor - Google Patents
Photoelectricity current sensor Download PDFInfo
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- CN204832311U CN204832311U CN201520518947.1U CN201520518947U CN204832311U CN 204832311 U CN204832311 U CN 204832311U CN 201520518947 U CN201520518947 U CN 201520518947U CN 204832311 U CN204832311 U CN 204832311U
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- 230000005622 photoelectricity Effects 0.000 title abstract description 3
- 230000003287 optical effect Effects 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 3
- 230000008054 signal transmission Effects 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 abstract description 2
- 238000011161 development Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model relates to a photoelectricity current sensor, including photocell, hall sensor, electronic module and wireless transmitting module, hall sensor sets up on high voltage transmission lines, hall sensor connects the electronic module, electronic module output connection wireless transmitting module, the photocell connection of supplying power respectively the electronic module with wireless transmitting module, hall sensor is used for gathering the electric current on the high voltage transmission lines, the electronic module is used for handling the signal that hall sensor gathered, wireless transmitting module is used for the signal transmission with handling, the photocell is used for for electronic module and wireless transmitting module power supply. Carry out high voltage transmission lines's measurement through hall sensor, not only can measure alternating current, can also measure direct current and the mixed electric current of alternating current -direct current simultaneously. Go out the signal transmission who measures through wireless sending module, solved the high voltage isolation problem of high potential, improved measurement system's automatic level simultaneously.
Description
Technical field
The utility model belongs to high voltage power transmission field, is specifically related to a kind of optical current transformer.
Background technology
In recent years, along with the development of digitizing technique, digital transformer substation becomes inevitable development trend, and the research of its major equipment electronic mutual inductor (also referred to as photo-electricity mutual-inductor) also constantly makes progress.Compared with traditional electromagnetic current transducer, electronic mutual inductor eliminates the problem of magnetic saturation and ferroresonance, and dynamic range is large, and measuring accuracy is high; Meanwhile, export with light digital signal, eliminate a large amount of secondary lines, saved cost.
Electronic mutual inductor is divided into active and passive type two kinds.Passive type sensing head part adopts optical sensing principle, by optical fiber by signal transmission to the electronic mutual inductor of low potential side, owing to there is no high-pressure side electronic circuit, therefore the function problem of circuit is not had, but the precision and stability of passive type electronic mutual inductor is easily subject to the impact of temperature, vibration.Active sensing head part adopts traditional sensing principle, and electrical signal transfer is become light signal to light-emitting component by sampling coil by high voltage side current signal, then is delivered to low potential side by optical fiber, converts to after electric signal amplify output through inversion.Therefore need to power on high-tension side circuit, power supply mode conventional at present has: photoelectric cell power supply mode, bus current power supply mode, ultrasonic-frequency power supply power supply mode etc.Compared with passive type structure, active structure is easy to realize the high precision of product and stable, and being convenient to the standardization and industrialization of parts, is therefore the universally recognized a kind of organization plan of current industry.
What electronic mutual inductor of the prior art was measured is all alternating current, does not have the electronic mutual inductor measuring DC current or alternating current-direct current hybrid current at present.
Utility model content
The purpose of this utility model is to provide a kind of optical current transformer, cannot measure the problem of DC current or alternating current-direct current hybrid current in order to solve high-tension current inductor of the prior art.
For achieving the above object, scheme of the present utility model comprises:
A kind of optical current transformer, comprises photoelectric cell, Hall element, electronic module and wireless transmitter module; Described Hall element is arranged on high-tension line, and described Hall element connects electronic module, and described electronic module exports and connects wireless transmitter module; Described photoelectric cell is respectively for the described electronic module of electrical connection and described wireless transmitter module; Described Hall element is for gathering the electric current on high-tension line; The signal that described electronic module is used for Hall element to collect processes; Described wireless transmitter module is used for the signal processed to send; Described photoelectric cell is used for powering to electronic module and wireless transmitter module.
Described photovoltaic cells connected in parallel storage capacitor.
The beneficial effects of the utility model are: the measurement being carried out high-tension line by Hall element, can not only measure alternating current, can also measure DC current and alternating current-direct current hybrid current simultaneously.By wireless sending module, the signal measured is sent, solve the high_voltage isolation problem of noble potential, improve the automatization level of measuring system simultaneously.
Store photronic electric energy by storage capacitor, and electronic module and wireless transmitter module are powered, improve photronic energy utilization rate.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
As shown in Figure 1, the optical current transformer of the utility model embodiment comprises photoelectric cell, Hall element, electronic module and wireless transmitter module.Hall element is arranged on high-tension line, and Hall element connects electronic module, and electronic module exports and connects wireless transmitter module, and photoelectric cell is respectively for electrical connection electronic module and wireless transmitter module.
Hall element gathers the current signal on high-tension line, and this current signal can be alternating current, also can be DC current and alternating current-direct current hybrid current, and generate small voltage signal; By electronic module, this voltage signal is processed; And by wireless transmitter module, the signal processed is sent to distant place receiving trap.Photoelectric cell directly gathers natural light, without the need to external light source, powers to electronic module and wireless transmitter module.
In the above-described embodiments, described photoelectric cell two ends storage capacitor in parallel.When having light, by photoelectric cell, storage capacitor is charged, and powered to electronic module and wireless transmitter module by storage capacitor.
In the above-described embodiments, described electronic module is integrated operational amplifier circuit, and described integrated operational amplifier circuit is used for processing the current signal that Hall element collects, can be suitable with wireless transmitter module.As other embodiments, described electronic module is single-chip microcomputer.
Claims (2)
1. an optical current transformer, is characterized in that: comprise photoelectric cell, Hall element, electronic module and wireless transmitter module; Described Hall element is arranged on high-tension line, and described Hall element connects electronic module, and described electronic module exports and connects wireless transmitter module; Described photoelectric cell is respectively for the described electronic module of electrical connection and described wireless transmitter module; Described Hall element is for gathering the electric current on high-tension line; The signal that described electronic module is used for Hall element to collect processes; Described wireless transmitter module is used for the signal processed to send; Described photoelectric cell is used for powering to electronic module and wireless transmitter module.
2. optical current transformer according to claim 1, is characterized in that: described photovoltaic cells connected in parallel storage capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520518947.1U CN204832311U (en) | 2015-07-16 | 2015-07-16 | Photoelectricity current sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520518947.1U CN204832311U (en) | 2015-07-16 | 2015-07-16 | Photoelectricity current sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204832311U true CN204832311U (en) | 2015-12-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520518947.1U Active CN204832311U (en) | 2015-07-16 | 2015-07-16 | Photoelectricity current sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN204832311U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067862A (en) * | 2015-07-16 | 2015-11-18 | 许继电气股份有限公司 | Photoelectric current sensor |
-
2015
- 2015-07-16 CN CN201520518947.1U patent/CN204832311U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067862A (en) * | 2015-07-16 | 2015-11-18 | 许继电气股份有限公司 | Photoelectric current sensor |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |