CN109270419A - A kind of power supply device and detection system of the detection device of high-potential thyristor - Google Patents
A kind of power supply device and detection system of the detection device of high-potential thyristor Download PDFInfo
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- CN109270419A CN109270419A CN201710577188.XA CN201710577188A CN109270419A CN 109270419 A CN109270419 A CN 109270419A CN 201710577188 A CN201710577188 A CN 201710577188A CN 109270419 A CN109270419 A CN 109270419A
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- voltage
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- thyristor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/26—Testing of individual semiconductor devices
- G01R31/2607—Circuits therefor
- G01R31/263—Circuits therefor for testing thyristors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The present invention relates to a kind of power supply device of the detection device of high-potential thyristor and detection system, power supply device includes isolating transformer and voltage processing circuitry；The first side winding of isolating transformer, which is used to go here and there, to be located in the RC damping branch at high-potential thyristor both ends, the input terminal of the secondary side winding connection voltage processing circuitry of isolating transformer, the output end of voltage processing circuitry are used to energize the detection device of connection high potential crystalline substance lock.The present invention is taken from the RC of high-potential thyristor both ends parallel connection damping branch using isolating transformer can, and the electric energy of acquirement is powered after voltage processing circuitry is handled to the detection device of high-potential thyristor, to realize the power supply of detection device and the electrical isolation of high potential primary element, and the electric current in the RC antihunt circuit for passing through thyristor parallel connection itself using isolation current transformer takes electricity, the parallel impedance that thyristor will not be changed effectively prevents the phenomenon that leading to high-voltage breakdown since thyristor voltage distribution is uneven.
Description
Technical field
The present invention relates to a kind of power supply device of the detection device of high-potential thyristor and detection systems, belong to thyristor and exist
Line detection technique field.
Background technique
In high-voltage rectifier include multiple high-pressure thyristors, in normal course of operation, need the temperature to thyristor,
The electric states such as voltage are detected, and if there is exception, then take quickly and effectively safeguard measure, to prevent the expansion of accident
Greatly.
Under normal conditions, the detection device of thyristor uses two kinds of power supply modes: a kind of power supply mode is supplied using external
Electricity needs to solve at this time the isolating problem of height voltage electrical；Another power supply mode is using in-line power, at this time from high potential
Electricity directly is taken, power-supply circuit is more complicated.Notification number is that the Chinese patent document of CN203465391U discloses a kind of high piezocrystal
Brake tube non-fiber isolated fault detection device, which directly takes electricity from high-pressure thyristor both ends, using current mode voltage
Mutual inductor and high_voltage isolation optocoupler carry out dual resisteance, but additional current-limiting resistance is needed in the invention, change multistage string
Join the impedance voltage distribution of thyristor.For plural serial stage thyristor, the parallel impedance at thyristor both ends must be consistent, no
Person will lead to thyristor voltage distribution imbalance, and the serious thyristor that will lead to punctures because of high voltage.
Summary of the invention
The object of the present invention is to provide a kind of power supply device of the detection device of high-potential thyristor and detection systems, are used for
It solves direct current in the prior art and takes electricity that can change the impedance voltage of thyristor from thyristor high potential to be distributed this technical problem.
In order to solve the above technical problems, the present invention provides a kind of power supply device of the detection device of high-potential thyristor,
Including isolating transformer and voltage processing circuitry；The first side winding of the isolating transformer is located at high-potential thyristor for going here and there
In the RC damping branch at both ends, the secondary side winding of the isolating transformer connects the input terminal of the voltage processing circuitry, institute
The output end for stating voltage processing circuitry is used to energize the detection device of connection high-potential thyristor.
Further, the voltage processing circuitry includes rectification circuit and voltage regulator circuit, the input terminal of the rectification circuit
The secondary side winding of the isolating transformer is connected, the output end of the rectification circuit connects the input terminal of the voltage regulator circuit,
The output end of the voltage regulator circuit is for energizing the detection device for connecting the high-potential thyristor.
Further, the rectification circuit is full-bridge rectification module.
Further, the voltage regulator circuit includes the zener diode and storage capacitor being connected in parallel.
The present invention also provides a kind of detection system of high-potential thyristor, including detection device and its power supply device, institutes
Stating power supply device includes isolating transformer and voltage processing circuitry；The first side winding of the isolating transformer is located at height for going here and there
In the RC damping branch at current potential thyristor both ends, the secondary side winding of the isolating transformer connects the voltage processing circuitry
The output end energy supply of input terminal, the voltage processing circuitry connects the detection device.
Further, the voltage processing circuitry includes rectification circuit and voltage regulator circuit, the input terminal of the rectification circuit
The secondary side winding of the isolating transformer is connected, the output end of the rectification circuit connects the input terminal of the voltage regulator circuit,
The output end energy supply of the voltage regulator circuit connects the detection device.
Further, the rectification circuit is full-bridge rectification module, and the voltage regulator circuit includes the pressure stabilizing two being connected in parallel
Pole pipe and storage capacitor.
Further, the detection device is camera, temperature-detecting device or voltage check device.
Further, the temperature-detecting device includes sequentially connected temperature detecting element, Voltage-to-frequency Converter, puts
Big circuit and photoelectric conversion circuit.
Further, the voltage check device includes sequentially connected bleeder circuit, Voltage-to-frequency Converter, amplification electricity
Road and photoelectric conversion circuit.
The beneficial effects of the present invention are:
Taken from the RC of high-potential thyristor both ends parallel connection damping branch using isolating transformer can, and by the electric energy of acquirement
It powers after voltage processing circuitry is handled to the detection device of high-potential thyristor, to realize the confession of detection device
The electrical isolation of power supply and high potential primary element, and the RC of thyristor parallel connection is directly passed through using isolation current transformer
Electric current in antihunt circuit takes electricity, will not change the parallel impedance of thyristor, effectively prevents being distributed not due to thyristor voltage
The phenomenon that balancing and thyristor high-voltage caused to puncture.
Further, isolating transformer alternating current obtained is transformed to direct current by rectification circuit, direct current warp
Voltage regulator circuit is powered to detection device again after carrying out pressure stabilizing, to provide reliable and stable working power for detection device.
Detailed description of the invention
Fig. 1 is the schematic illustration of the detection system embodiment 1 of high-potential thyristor；
Fig. 2 is the schematic illustration of the detection system embodiment 2 of high-potential thyristor；
Fig. 3 is the schematic illustration of the detection system embodiment 3 of high-potential thyristor.
Specific embodiment
With reference to the accompanying drawing and specific embodiment detailed description of the preferred embodiments.
The embodiment 1 of the detection system of high-potential thyristor:
As shown in Figure 1, the detection system of high-potential thyristor includes specific detection device camera and is camera
The power supply device of electric energy is provided, which can realize the monitoring of high-potential thyristor on the spot.
Specifically, power supply device includes isolating transformer and voltage processing circuitry, the first side winding of isolating transformer is used
In the RC damping branch that string is located at high-potential thyristor both ends, which damps string in branch and is equipped with damping capacitor Cs and damping electricity
Hinder R1.The input terminal of the secondary side winding connection voltage processing circuitry of isolating transformer BT, the output end of voltage processing circuitry supply
It can connecting detection device camera.
Wherein, above-mentioned isolating transformer takes from the RC damping circuit at thyristor both ends to power, acquired power supply
Power supply and RC primary element electrical isolation.For the isolating transformer using isolation Current Transmit, isolation transformer CT is to wear
Core mutual inductor.Certainly, isolation transformer CT can also use the mutual inductor of other forms.Voltage processing circuitry includes rectification circuit
And voltage regulator circuit, rectification circuit are specially a kind of full-bridge rectification module 1D, naturally it is also possible to using other whole in the prior art
Flow module, such as semi-bridge rectifier module；Voltage regulator circuit is the zener diode W1 and storage capacitor E being connected in parallel, two pole of pressure stabilizing
Two output ends of the point connection full-bridge rectification module 1D in parallel of the two of pipe W1 and storage capacitor E, and connecting detection device camera shooting of powering
Head.
The alternating current of thyristor RC damping circuit fills storage capacitor E after rectifier bridge 1D transformation through isolation transformer CT
Electricity, the voltage of storage capacitor E after voltage-stabiliser tube W1 pressure stabilizing to camera by powering.Operating status of the camera to high-potential thyristor
It is monitored, and the data-signal monitored is transmitted directly to low potential detection device by included optical fiber interface.
The embodiment 2 of the detection system of high-potential thyristor:
As shown in Fig. 2, the detection system of high-potential thyristor include specific detection device i.e. temperature-detecting device and
The power supply device of electric energy is provided for temperature-detecting device.
Wherein, temperature-detecting device includes temperature detecting element, Voltage-to-frequency Converter, amplifying circuit and photoelectric conversion electricity
Road.Temperature detecting element specifically uses the temperature sensor of model LM35 a kind of, for detecting the temperature of high-potential thyristor,
Temperature signal is directly transformed to the voltage signal with temperature proportional, and sends the voltage signal to voltage-frequency conversion
Device.Voltage-to-frequency Converter specifically uses electric voltage frequency (F/V) converter of model LM331, for converting voltage signal
Amplifying circuit is sent at the frequency signal with temperature proportional, and by the frequency signal.Amplifying circuit includes a CMOS tube
T1, the output end of the grid G connection LM331 of CMOS tube, the drain D of CMOS tube connect power supply device with source S.The leakage of CMOS tube
Also string is equipped with resistance R2 and photoelectric conversion circuit between pole D and power supply device, which includes a photoemission
The anode of pipe T2, T2 connect power supply device, the drain D of the cathode connection CMOS tube of T2.CMOS tube amplifies frequency signal
Frequency signal is converted to optical signal by photoemission cell afterwards, is then exported optical signal to the detection dress of low potential by optical fiber
It sets, the measurement control equipment of low potential parses the current temperature value of high-potential thyristor from optical frequency signals.
In addition, identical as the power supply device in embodiment 1 by power supply device in this present embodiment, details are not described herein again.
The embodiment 3 of the detection system of high-potential thyristor:
As shown in figure 3, the detection system of high-potential thyristor include specific detection device i.e. voltage check device and
The power supply device of electric energy is provided for voltage check device.
On the basis of Fig. 2, temperature detecting element LM35 replaced with and is used for being made of R0, Rf for connection detection circuit
Resitstance voltage divider, the voltage signal after partial pressure are added in the input terminal of Voltage-to-frequency Converter LM331, and voltage signal is converted to frequency
Rate signal, the frequency signal are amplified into photoemission cell T2 by CMOS tube T1.Photoemission cell T2 is issued at this time
Optical signal reforms into the signal proportional to voltage, the frequency signal that the detection device of low potential is issued by parsing T2, energy
The high voltage for extruding thyristor both ends of detection.
Certainly, the detection system of high-potential thyristor of the present invention is not limited to above-mentioned three provided kind embodiment, when need
When detecting to certain electrical quantity of high-potential thyristor, the corresponding detection of electrical quantity selection of detection can according to need
Device, camera as escribed above, temperature-detecting device, voltage check device are supplied using power supply device provided by the present invention
It is electrically connected selected detection device, the electrical quantity that detection device will test switchs to corresponding optical signal, and passes by optical fiber
It is defeated to arrive low potential, and then realize the detection isolation of the various electrical quantity of thyristor high potential.
Claims (10)
1. a kind of power supply device of the detection device of high-potential thyristor, which is characterized in that at isolating transformer and voltage
Manage circuit；The first side winding of the isolating transformer, which is used to go here and there, to be located in the RC damping branch at high-potential thyristor both ends, institute
The secondary side winding for stating isolating transformer connects the input terminal of the voltage processing circuitry, the output end of the voltage processing circuitry
For energizing the detection device of connection high-potential thyristor.
2. the power supply device of the detection device of high-potential thyristor according to claim 1, which is characterized in that the voltage
Processing circuit includes rectification circuit and voltage regulator circuit, and the input terminal of the rectification circuit connects the secondary side of the isolating transformer
Winding, the output end of the rectification circuit connect the input terminal of the voltage regulator circuit, and the output end of the voltage regulator circuit is for supplying
The detection device of the high-potential thyristor can be connected.
3. the power supply device of the detection device of high-potential thyristor according to claim 2, which is characterized in that the rectification
Circuit is full-bridge rectification module.
4. the power supply device of the detection device of high-potential thyristor according to claim 2 or 3, which is characterized in that described
Voltage regulator circuit includes the zener diode and storage capacitor being connected in parallel.
5. a kind of detection system of high-potential thyristor, including detection device and its power supply device, which is characterized in that the energy supply
Device includes isolating transformer and voltage processing circuitry；The first side winding of the isolating transformer is located at high potential crystalline substance for going here and there
In the RC damping branch at brake tube both ends, the secondary side winding of the isolating transformer connects the input of the voltage processing circuitry
The output end energy supply at end, the voltage processing circuitry connects the detection device.
6. the detection system of high-potential thyristor according to claim 5, which is characterized in that the voltage processing circuitry packet
Rectification circuit and voltage regulator circuit are included, the input terminal of the rectification circuit connects the secondary side winding of the isolating transformer, described
The output end of rectification circuit connects the input terminal of the voltage regulator circuit, and the output end energy supply of the voltage regulator circuit connects the detection
Device.
7. the detection system of high-potential thyristor according to claim 6, which is characterized in that the rectification circuit is full-bridge
Rectification module, the voltage regulator circuit include the zener diode and storage capacitor being connected in parallel.
8. the detection system of the high-potential thyristor according to any one of claim 5-7, which is characterized in that the detection
Device is camera, temperature-detecting device or voltage check device.
9. the detection system of high-potential thyristor according to claim 8, which is characterized in that the temperature-detecting device packet
Include sequentially connected temperature detecting element, Voltage-to-frequency Converter, amplifying circuit and photoelectric conversion circuit.
10. the detection system of high-potential thyristor according to claim 8, which is characterized in that the voltage check device
Including sequentially connected bleeder circuit, Voltage-to-frequency Converter, amplifying circuit and photoelectric conversion circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710577188.XA CN109270419A (en) | 2017-07-14 | 2017-07-14 | A kind of power supply device and detection system of the detection device of high-potential thyristor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710577188.XA CN109270419A (en) | 2017-07-14 | 2017-07-14 | A kind of power supply device and detection system of the detection device of high-potential thyristor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109270419A true CN109270419A (en) | 2019-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710577188.XA Pending CN109270419A (en) | 2017-07-14 | 2017-07-14 | A kind of power supply device and detection system of the detection device of high-potential thyristor |
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Citations (7)
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|---|---|---|---|---|
| CN101232278A (en) * | 2008-02-25 | 2008-07-30 | 中国电力科学研究院 | Gate circuit transistor valve electropositive potential electronic plate |
| CN201307850Y (en) * | 2008-12-08 | 2009-09-09 | 顺特电气有限公司 | Thyristor valve photoelectric trigger board used for static var compensator |
| CN102005906A (en) * | 2010-09-14 | 2011-04-06 | 中国电力科学研究院 | Novel large-capacity energy obtaining circuit of direct current converter valve thyristor triggering and monitoring unit |
| CN102116681A (en) * | 2011-02-23 | 2011-07-06 | 株洲变流技术国家工程研究中心有限公司 | Real-time detection device for high potential temperature and method thereof |
| CN104467813A (en) * | 2014-12-12 | 2015-03-25 | 北京四方继保自动化股份有限公司 | High-order self-energy-obtaining-type thyristor optical fiber driving loop with temperature measurement function for excitation device |
| CN204290291U (en) * | 2014-12-27 | 2015-04-22 | 中国西电电气股份有限公司 | The automatically controlled thyristor excess voltage protection of a kind of extra-high voltage direct-current transmission |
| US20150309108A1 (en) * | 2014-04-23 | 2015-10-29 | Ge Energy Power Conversion Gmbh | Circuit arrangement with a thyristor circuit, as well as a method for testing the thyristor circuit |
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2017
- 2017-07-14 CN CN201710577188.XA patent/CN109270419A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101232278A (en) * | 2008-02-25 | 2008-07-30 | 中国电力科学研究院 | Gate circuit transistor valve electropositive potential electronic plate |
| CN201307850Y (en) * | 2008-12-08 | 2009-09-09 | 顺特电气有限公司 | Thyristor valve photoelectric trigger board used for static var compensator |
| CN102005906A (en) * | 2010-09-14 | 2011-04-06 | 中国电力科学研究院 | Novel large-capacity energy obtaining circuit of direct current converter valve thyristor triggering and monitoring unit |
| CN102116681A (en) * | 2011-02-23 | 2011-07-06 | 株洲变流技术国家工程研究中心有限公司 | Real-time detection device for high potential temperature and method thereof |
| US20150309108A1 (en) * | 2014-04-23 | 2015-10-29 | Ge Energy Power Conversion Gmbh | Circuit arrangement with a thyristor circuit, as well as a method for testing the thyristor circuit |
| CN104467813A (en) * | 2014-12-12 | 2015-03-25 | 北京四方继保自动化股份有限公司 | High-order self-energy-obtaining-type thyristor optical fiber driving loop with temperature measurement function for excitation device |
| CN204290291U (en) * | 2014-12-27 | 2015-04-22 | 中国西电电气股份有限公司 | The automatically controlled thyristor excess voltage protection of a kind of extra-high voltage direct-current transmission |
Non-Patent Citations (3)
| Title |
|---|
| MATTAVELLI P等: "SSR Analysis with Dynamic Phasor Model of Thyristor-Controlled Series Capacitor", 《IEEE TRANSACTIONS ON POWER SYSTEMS》 * |
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