CN201804701U - Laser power-supply type 110kV photoelectric current transformer - Google Patents
Laser power-supply type 110kV photoelectric current transformer Download PDFInfo
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- CN201804701U CN201804701U CN2010205417564U CN201020541756U CN201804701U CN 201804701 U CN201804701 U CN 201804701U CN 2010205417564 U CN2010205417564 U CN 2010205417564U CN 201020541756 U CN201020541756 U CN 201020541756U CN 201804701 U CN201804701 U CN 201804701U
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Abstract
The utility model discloses a laser power-supply type 110kV photoelectric current transformer, which comprises a signal sampling Rogowski coil, a pre-treating circuit, a MSP430 processor, an electro-optics converter, an optics-electro converter, a voltage-stabilizing circuit, a photocell and a laser, wherein the optics-electro converter is pull out from an insulator through an optical fiber and is connected to a controller on the ground. The Rogowski coil is used for sampling a signal at a high-pressure side and the signal after being integrated amplified and filtered is sent to the MSP430 processor, and then the signal is A/D converted in the processor, and lastly the electro-optics conversion is performed on the data through a serial port so as to transform the data into an optical signal which can be transmitted to a DSP processor on the ground through the optical fiber for the purpose of treating and restoring the signal. Because of the full optical fiber transmission, the utility model has the advantages of good insulating property, small electromagnetic interference effect, wide measuring frequency band, large dynamic range, high measuring precision and capability of meeting demand of intellectualized electrical power system.
Description
Technical field
The utility model relates to fields such as electrical engineering, electronic technology, computer technology, optical technology, automatic technology, communication technology application, mechanical structure, particularly a kind of laser powered sensor type 110KV photoelectric current inductor.
Background technology
Continuous increase along with the electric power system transmission capacity, the line voltage grade is more and more higher, thing followed problem is that more and more higher to the requirement of current measure device in the electrical network, China is carrying out the research and the practice of the transmission line of 1000kV electric pressure in some areas at present.
Up to the present, the measuring equipment of electric current mainly still adopts electromagnetic current transducer in China's electric power system, yet along with the continuous rising of electric pressure, traditional electromagnetic current transducer is in operation and exposes increasing shortcoming:
1, the insulation system of the current transformer of electromagnetic type structure becomes increasingly complex, and the cost cost of insulation system is exponential relationship and rises along with the rising of electric pressure, and when the system voltage grade was very high, only the cost of instrument transformer insulated part was very huge;
2, electromagnetic current transducer is owing to use iron core utilization electromagnetic induction principle to realize the measurement of electric current, and iron core problems such as intrinsic ferromagnetic saturated, ferro resonance be difficult to solve, cause bigger measure error;
3, electromagnetic current transducer is vulnerable to the interference of electromagnetic signal in electric power system, and electromagnetic compatibility problem is comparatively serious;
Dynamic range was little when 4, electromagnetic current transducer carried out current measurement, the response time slow, it is narrow to measure frequency band, and is comparatively difficult for the measurement of Harmonious Waves in Power Systems;
5, electromagnetic current transducer is output as the current signal of 5A or 1A with analog quantity when measuring, and this current signal can not directly link to each other with the Automation of Electric Systems device with modern Microcomputer Protection, is not easy to the digitlization and the intelligent development of electric power system;
6, bulky, the Heavy Weight of electromagnetic current transducer is very inconvenient at aspects such as transportation, installation and maintenances;
7, electromagnetic current transducer does not allow the secondary side open circuit when operation, in case open circuit will induce high voltage, thereby operation and attendant's life security is caused danger.
Summary of the invention
Defective or deficiency in view of above prior art existence, the purpose of this utility model is, a kind of laser powered sensor type 110KV photoelectric current inductor is provided, this instrument transformer is will handle through opto-electronic conversion from the on high-tension side signal of telecommunication by the Rogowski coil to become light signal afterwards, to ground side, become the signal of telecommunication in system that ground side is handled by electrooptical device via Optical Fiber Transmission again.Because the information loss of optical fiber transmission is little, information capacity is big, insulation property are high, be not subjected to electromagnetic interference, in light weight etc. influence, has so both improved reliability, has reduced cost again, and has made easy for installationization.
In order to realize above-mentioned task, the utility model is taked following technical solution:
A kind of laser powered sensor type 110KV photoelectric current inductor comprises channel-section steel, and base is arranged on the channel-section steel, and insulator is arranged on the base, it is characterized in that:
Be provided with solenoid housing above insulator, the Rogowski coil is arranged in the housing, there is copper rod in housing central authorities, and this copper rod passes the Rogowski coil and draws from the housing both sides;
Also be provided with the high-pressure side disposable plates in the space of housing, pre-process circuit, MSP430 processor, electrical to optical converter, optical-electrical converter, voltage stabilizing circuit, photocell and laser are arranged on this high-pressure side disposable plates;
Wherein, the Rogowski coil is connected with pre-process circuit, and pre-process circuit is connected with MSP430 processor, electrical to optical converter, and described MSP430 processor also connects voltage stabilizing circuit, and voltage stabilizing circuit is connected with laser by photocell; Electrical to optical converter is connected with optical-electrical converter, and optical-electrical converter is drawn with the controller on ground from insulator by optical fiber and is connected.
Other characteristics of the present utility model are:
Described Rogowski coil is to adopt the mode of multi-disc series connection to be made by two-sided pcb board.
Described controller comprises having dsp processor at least, is connected with serial communication modular, history data store module, LCD MODULE, key-press module respectively on dsp processor, D/A modular converter and power module.
Described processor is the DSP of TI company.
Described laser is a semiconductor laser.
Use the optical fiber transceiver module to connect between described optical-electrical converter and the electrical to optical converter.
Described pre-process circuit comprises integration amplification module, filtration module.
Described serial communication modular is selected the RS-232 communication interface.
Described LCD MODULE is selected LCD display.
Described filtration module is the Butterworth filter.
The utility model adopts laser and photocell to form on high-tension side electric power system, so that reliable and stable power output to be provided, the high-pressure side disposable plates is carried out supply of electrical energy, is a kind of reliable power supply supply mode.
That the PCB type Rogowski coil that the utility model adopted has is in light weight, precision is high, be easy to make, be convenient to the advantage of industrially scalable production.Adopt optical fiber to transmit, engineering cost is reduced, make installation process simplification, convenient purification, the more important thing is, increased the reliability of device.The laser powered sensor mode is not subjected to the influence of power system operation mode and external environment, and electric energy can reliablely and stablely be provided.
Description of drawings
Fig. 1 is a structural representation of the present utility model.Number in the figure is represented respectively: 1, high voltage bus; 2, solenoid housing; 3, controller; 4, optical fiber; 5, channel-section steel; 6, base; 7, insulator; 8, copper rod.
Fig. 2 is the circuit block diagram of high-pressure side disposable plates.
Fig. 3 is the dsp processor circuit block diagram.
Fig. 4-1,4-2,4-3,4-4 are respectively the signal processing and the output circuit of MSP430 processor.
Fig. 5-1,5-2,5-3,5-4 are respectively the dsp controller signal processing circuit.
Fig. 6 is the controller software flow chart.
Below in conjunction with accompanying drawing and instantiation the utility model device is described in further detail.
Embodiment
The mentality of designing of laser powered sensor type 110KV photoelectric current inductor of the present utility model is: on high-tension side current signal is gathered by the Rogowski coil, active integration amplification of the signal of telecommunication process that collects and second order Butterworth filter are sent into the high-pressure side treatment system and are carried out A/D conversion and processing, next the data that convert are passed to electrooptic conversion module through the serial ports by the high-pressure side disposable plates after the coding with signal, convert the electrical signal to light signal transfers signals to ground side via optical fiber data handling system, in ground side the data that receive are carried out opto-electronic conversion earlier, in dsp processor, signal is handled and reduced then, the data of handling are received corresponding digital delivery outlet or simulation delivery outlet.
Referring to Fig. 1, laser powered sensor type 110KV photoelectric current inductor of the present utility model, comprise channel-section steel 5, base 6 is arranged on the channel-section steel 5, insulator 7 is arranged on the base 6, above insulator 7, be provided with solenoid housing 2, the Rogowski coil is arranged in the housing 2, there is copper rod 8 in housing 2 central authorities, and this copper rod 8 passes the Rogowski coil and draws from housing 2 both sides;
Also be provided with the high-pressure side disposable plates in the space of housing 2, pre-process circuit, MSP430 processor, electrical to optical converter, optical-electrical converter, voltage stabilizing circuit, photocell and laser are arranged on this high-pressure side disposable plates;
Wherein, the Rogowski coil is connected with pre-process circuit, and pre-process circuit is connected with MSP430 processor, electrical to optical converter, and described MSP430 processor also connects voltage stabilizing circuit, and voltage stabilizing circuit is connected with laser by photocell; Electrical to optical converter is connected with optical-electrical converter, and optical-electrical converter is drawn from insulator 7 by optical fiber 4, is connected with the controller 3 on ground through the hole of reserving on the base 6 again.
Pre-process circuit comprises integration amplification module, filtration module, sampled signal input module, A/D modular converter.Wherein filtration module is the Butterworth filter.
The Rogowski coil is to adopt the mode of multi-disc series connection to be made by two-sided pcb board; Pre-process circuit comprises integration amplification module, filtration module, sampled signal input module, A/D modular converter.
Principle of the present utility model is, high voltage bus 1 is connected with copper rod 8, after Rogowski coil acquired signal, high-pressure side disposable plates in housing 2 carries out after the signal processing signal being adjusted to suitable scope, after the A/D conversion, enter electrical to optical converter the signal of telecommunication is converted into light signal, use the optical fiber transceiver module to connect between optical-electrical converter and the electrical to optical converter.By serial ports data are reached the electrooptical device of low-pressure side by optical fiber, the serial ports that is converted to after the signal of telecommunication by low-pressure side receives data, carries out the reduction and the processing of data then in the controller 3 of low-pressure side.
In Fig. 2, the electric current that the Rogowski coil will flow through bus 1 is converted into voltage signal, through after the processing of on high-tension side pre-process circuit, signal is delivered in the MSP430 processor, in the MSP430 processor, carry out by serial ports data being passed to electro-optical conversioning device after the A/D conversion, with electrical signal conversion is light signal, be sent to low-pressure side by optical fiber again, the electrooptical device of low-pressure side is converted into the signal of telecommunication with light signal again, enter into through serial ports low-pressure side the dsp processor of controller 3, in dsp processor, handle accordingly.In the high-pressure side, come to provide electric energy for the high-pressure side disposable plates by the energy supply module that laser and photocell are formed.
Fig. 3 is the dsp controller block diagram.Controller 3 has dsp processor at least, is connected with serial communication modular, history data store module, LCD MODULE, key-press module respectively on dsp processor, D/A modular converter and power module.Dsp processor is analyzed, is calculated receiving the data of coming from serial ports, and decision is that output analog signal or direct output digital signal show that to LCD the keypress function administration module can be adjusted and be provided with in conjunction with the LCD Presentation Function data.
Fig. 4-1,4-2,4-3,4-4 are respectively the signal processing and the output circuit of MSP430 controller.This circuit is made up of MSP430 series monolithic MSP430F149, analog signal conditioner circuit, temperature measuring circuit, MAX3232 serial port circuit etc.This circuit is accepted the signal after the Rogowski coil is handled through pre-process circuit, after the AD processing through the MSP430 controller, by serial ports data is sent.
Fig. 5-1,5-2,5-3,5-4 are the signal processing circuit of dsp controller.This circuit is made up of serial port chip MAX202, liquid crystal interface circuit, keystroke interface circuit, D/A process chip etc.Its effect is in order to finish functions such as calculating such as current effective value, phase place, real time data demonstration, storage, communication, D/A conversion, parameter are provided with.
Fig. 6 is the software flow pattern of the DSP main program of controller 3.The software design of controller 3 flow process substantially is: light promptly behind the system initialization that LCD enters that it is welcome main interface, function selecting, has judged whether key assignments, judges whether that Data Receiving finishes, the button management, judge whether not have for a long time key and be pressed, close LCD.The serial communication of DSP is interrupted the information that receives is deposited in buffering area, waits to finish receiving the back its data are handled.
Laser powered sensor type 110KV photoelectric current inductor of the present utility model, its compact conformation, volume is little, and installation process is simple, and is easy to maintenance.The voltage transformer summation current transformer is placed on engineering cost is reduced, make and install simple and conveniently, the more important thing is, increased the reliability of device.
Claims (10)
1. a laser powered sensor type 110KV photoelectric current inductor comprises channel-section steel (5), and base (6) is arranged on the channel-section steel (5), and insulator (7) is arranged on the base (6), it is characterized in that:
Be provided with solenoid housing (2) in insulator (7) top, housing has the Rogowski coil in (2), and there is copper rod (8) in housing (2) central authorities, and this copper rod (8) passes the Rogowski coil and draws from housing (2) both sides;
Also be provided with the high-pressure side disposable plates in the space of housing (2), pre-process circuit, MSP430 processor, electrical to optical converter, optical-electrical converter, voltage stabilizing circuit, photocell and laser are arranged on this high-pressure side disposable plates;
Wherein, the Rogowski coil is connected with pre-process circuit, and pre-process circuit is connected with MSP430 processor, electrical to optical converter, and described MSP430 processor also connects voltage stabilizing circuit, and voltage stabilizing circuit is connected with laser by photocell; Electrical to optical converter is connected with optical-electrical converter, and optical-electrical converter is drawn with the controller (3) on ground from insulator (7) by optical fiber (4) and is connected.
2. laser powered sensor type 110KV photoelectric current inductor as claimed in claim 1 is characterized in that, described Rogowski coil is to adopt the mode of multi-disc series connection to be made by two-sided pcb board.
3. laser powered sensor type 110KV photoelectric current inductor as claimed in claim 1, it is characterized in that, described controller (3) comprises having dsp processor at least, on dsp processor, be connected with serial communication modular, history data store module, LCD MODULE, key-press module respectively, D/A modular converter and power module.
4. laser powered sensor type 110KV photoelectric current inductor as claimed in claim 3 is characterized in that described processor is selected the DSP of TI company for use.
5. laser powered sensor type 110KV photoelectric current inductor as claimed in claim 1 is characterized in that described laser is a semiconductor laser.
6. laser powered sensor type 110KV photoelectric current inductor as claimed in claim 1 is characterized in that, uses the optical fiber transceiver module to connect between described optical-electrical converter and the electrical to optical converter.
7. laser powered sensor type 110KV photoelectric current inductor as claimed in claim 1 is characterized in that described pre-process circuit comprises integration amplification module, filtration module, sampled signal input module, A/D modular converter.
8. laser powered sensor type 110KV photoelectric current inductor as claimed in claim 3 is characterized in that, described serial communication modular is selected the RS-232 communication interface.
9. laser powered sensor type 110KV photoelectric current inductor as claimed in claim 3 is characterized in that, described LCD MODULE is selected LCD display.
10. laser powered sensor type 110KV photoelectric current inductor as claimed in claim 7 is characterized in that described filtration module is the Butterworth filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205417564U CN201804701U (en) | 2010-09-26 | 2010-09-26 | Laser power-supply type 110kV photoelectric current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205417564U CN201804701U (en) | 2010-09-26 | 2010-09-26 | Laser power-supply type 110kV photoelectric current transformer |
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| Publication Number | Publication Date |
|---|---|
| CN201804701U true CN201804701U (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205417564U Expired - Fee Related CN201804701U (en) | 2010-09-26 | 2010-09-26 | Laser power-supply type 110kV photoelectric current transformer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105261465A (en) * | 2015-11-16 | 2016-01-20 | 王爱玲 | Application method for electronic current transformer |
| CN105759100A (en) * | 2015-11-16 | 2016-07-13 | 彭冬青 | Intelligent electronic current transformer |
| CN108320893A (en) * | 2017-01-17 | 2018-07-24 | 中国计量大学 | A kind of optical fiber transferring high voltage current transformer of eccentrically arranged type |
| CN110068719A (en) * | 2019-05-23 | 2019-07-30 | 国网冀北电力有限公司唐山供电公司 | A kind of photoelectric mixed-mode power grid high-voltage electricity measuring instrument |
| CN116660602A (en) * | 2023-07-25 | 2023-08-29 | 国网安徽省电力有限公司电力科学研究院 | Quantum transformer and current detection method |
-
2010
- 2010-09-26 CN CN2010205417564U patent/CN201804701U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105261465A (en) * | 2015-11-16 | 2016-01-20 | 王爱玲 | Application method for electronic current transformer |
| CN105759100A (en) * | 2015-11-16 | 2016-07-13 | 彭冬青 | Intelligent electronic current transformer |
| CN108320893A (en) * | 2017-01-17 | 2018-07-24 | 中国计量大学 | A kind of optical fiber transferring high voltage current transformer of eccentrically arranged type |
| CN108320893B (en) * | 2017-01-17 | 2024-04-12 | 中国计量大学 | Offset type optical fiber transmission high-voltage current transformer |
| CN110068719A (en) * | 2019-05-23 | 2019-07-30 | 国网冀北电力有限公司唐山供电公司 | A kind of photoelectric mixed-mode power grid high-voltage electricity measuring instrument |
| CN116660602A (en) * | 2023-07-25 | 2023-08-29 | 国网安徽省电力有限公司电力科学研究院 | Quantum transformer and current detection method |
| CN116660602B (en) * | 2023-07-25 | 2024-03-22 | 国网安徽省电力有限公司电力科学研究院 | Quantum transformer and current detection method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20190926 |
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| CF01 | Termination of patent right due to non-payment of annual fee |