CN105067862A - Photoelectric current sensor - Google Patents
Photoelectric current sensor Download PDFInfo
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- CN105067862A CN105067862A CN201510420632.8A CN201510420632A CN105067862A CN 105067862 A CN105067862 A CN 105067862A CN 201510420632 A CN201510420632 A CN 201510420632A CN 105067862 A CN105067862 A CN 105067862A
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- electronic module
- module
- current
- wireless transmitter
- hall element
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Abstract
The invention relates to a photoelectric current sensor. The photoelectric current sensor comprises a photocell, a Hall sensor, an electronic module, and a wireless emission module, the Hall sensor is arranged at a high-voltage line, the Hall sensor is connected with the electronic module, the output of the electronic module is connected with the wireless emission module, the photocell is respectively connected with the electronic module and the wireless emission module in a power supply manner, the Hall sensor is used for acquiring current of the high-voltage line, the electronic module is used for processing signals acquired by the Hall sensor, the wireless emission module is used for sending the processed signals, and the photocell is used for supplying power to the electronic module and the wireless emission module. According to the photoelectric current sensor, the high-voltage line is measured via the Hall sensor, alternating current can be measured, direct current and AC-DC hybrid current can also be measured, the measured signals are sent out via the wireless emission module, the problem of high-potential high-voltage isolation is solved, and automatic level of a measuring system is improved.
Description
Technical field
The invention belongs to high voltage power transmission field, be 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.
Summary of the invention
The object of this invention is to provide a kind of optical current transformer, the problem of DC current or alternating current-direct current hybrid current cannot be measured in order to solve high-tension current inductor of the prior art.
For achieving the above object, the solution of the present invention 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 invention has the beneficial effects as follows: the measurement being carried out high-tension line by Hall element, can not only alternating current be measured, DC current and alternating current-direct current hybrid current can also be measured 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 embodiment of the present invention.
Embodiment
As shown in Figure 1, the optical current transformer of the embodiment of the present invention 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 |
|---|---|---|---|
| CN201510420632.8A CN105067862A (en) | 2015-07-16 | 2015-07-16 | Photoelectric current sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510420632.8A CN105067862A (en) | 2015-07-16 | 2015-07-16 | Photoelectric current sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105067862A true CN105067862A (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510420632.8A Pending CN105067862A (en) | 2015-07-16 | 2015-07-16 | Photoelectric current sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN105067862A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2888623Y (en) * | 2006-04-13 | 2007-04-11 | 郑州精科电力自动化有限公司 | Optic powered high-voltage photoelectric current transformer based on GPS synchronization |
| CN101226211A (en) * | 2008-01-19 | 2008-07-23 | 苏州市苏电科技研究所 | Current sensor |
| CN102116786A (en) * | 2010-12-31 | 2011-07-06 | 广东电网公司电力科学研究院 | Neutral point direct current online measurement device for transformer |
| CN201946099U (en) * | 2010-05-05 | 2011-08-24 | 无锡科尔华电子有限公司 | Comprehensively monitored data acquiring device for solar zigbee wireless power transmission line |
| CN202549604U (en) * | 2011-11-28 | 2012-11-21 | 国网电力科学研究院 | Novel Hall electronic transformer |
| CN103412184A (en) * | 2013-08-19 | 2013-11-27 | 中国第一汽车股份有限公司 | Technology for monitoring and collecting original terminal currents of power equipment |
| CN204832311U (en) * | 2015-07-16 | 2015-12-02 | 许继电气股份有限公司 | Photoelectricity current sensor |
-
2015
- 2015-07-16 CN CN201510420632.8A patent/CN105067862A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2888623Y (en) * | 2006-04-13 | 2007-04-11 | 郑州精科电力自动化有限公司 | Optic powered high-voltage photoelectric current transformer based on GPS synchronization |
| CN101226211A (en) * | 2008-01-19 | 2008-07-23 | 苏州市苏电科技研究所 | Current sensor |
| CN201946099U (en) * | 2010-05-05 | 2011-08-24 | 无锡科尔华电子有限公司 | Comprehensively monitored data acquiring device for solar zigbee wireless power transmission line |
| CN102116786A (en) * | 2010-12-31 | 2011-07-06 | 广东电网公司电力科学研究院 | Neutral point direct current online measurement device for transformer |
| CN202549604U (en) * | 2011-11-28 | 2012-11-21 | 国网电力科学研究院 | Novel Hall electronic transformer |
| CN103412184A (en) * | 2013-08-19 | 2013-11-27 | 中国第一汽车股份有限公司 | Technology for monitoring and collecting original terminal currents of power equipment |
| CN204832311U (en) * | 2015-07-16 | 2015-12-02 | 许继电气股份有限公司 | Photoelectricity current sensor |
Non-Patent Citations (1)
| Title |
|---|
| 王树东 等: "采用无线单片机的高压供电监测器设计", 《工业仪表与自动化装置》 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151118 |