CN110095715A - A kind of automatic test device and method of the effect of simulation transient state pulse electric stress - Google Patents
A kind of automatic test device and method of the effect of simulation transient state pulse electric stress Download PDFInfo
- Publication number
- CN110095715A CN110095715A CN201910378746.9A CN201910378746A CN110095715A CN 110095715 A CN110095715 A CN 110095715A CN 201910378746 A CN201910378746 A CN 201910378746A CN 110095715 A CN110095715 A CN 110095715A
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- wave
- thyristor
- power frequency
- frequency half
- generator
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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
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
Abstract
The disclosure discloses a kind of automatic test device of simulation transient state pulse electric stress effect, comprising: electromagnetic interface filter, power frequency half-wave current generator, impulse voltage generator, control system and thyristor.The disclosure further discloses a kind of method of simulation transient state pulse electric stress effect.The disclosure can be realized the simulation of transient state pulse electric stress effect by applying voltage pulse to the thyristor in reverse recovery.
Description
Technical field
The disclosure belongs to converter valve electrical test field, and in particular to a kind of to simulate the automatic of transient state pulse electric stress effect
Change experimental rig and method.
Background technique
D.C. high voltage transmission because its long-distance and large-capacity power transmission and in terms of technical advantage obtain fastly
Speed development.Converter valve is the core equipment of HVDC transmission system, and the rectification connected and composed by converter valve, inverter circuit are
The basis of D.C. high voltage transmission.Primary element of the thyristor as thyristor-type converter valve, the degree of reliability of work determine
Can entire converter valve equipment stable operation.Running converter valve may bear switching overvoltage from AC and DC system,
Lightning surge and steep wave overvoltage.In addition, when inverter can cause to continue when there are the failures such as pulse missing, commutation failure
Between longer temporary overvoltage.Under the effect of various transient state electric stress, the working characteristics of thyristor will appear irreversible change, and
And it is likely to degenerate to the degree for being unable to satisfy its routine work requirement, or even thoroughly damage.
Automatic test device for simulating the effect of transient state pulse electric stress is that research thyristor is answered in transient state pulse electricity
Power acts on the basis of lower state change, however, rarely having open report for such experimental rig at present.In addition, in order to simulate with
The virtual condition of the live thyristor equivalent being on active service for a long time, generally requires the voltge surge for applying suitable number, and exploitation is corresponding
Automatic test device seem especially urgent.
Summary of the invention
In view of the above-mentioned problems, a kind of automation examination for being designed to provide simulation transient state pulse electric stress effect of the disclosure
Experiment device and method, can be by applying voltage pulse to the thyristor in reverse recovery to realize transient state pulse electric stress
The simulation of effect provides basis for state change of the research thyristor under the effect of transient state pulse electric stress.
The purpose of the disclosure is achieved through the following technical solutions:
A kind of automatic test device of simulation transient state pulse electric stress effect, comprising: electromagnetic interface filter, power frequency half-wave electricity
Flow-generator, impulse voltage generator, control system and thyristor；Wherein,
The electromagnetic interface filter is connected with the impulse voltage generator and power frequency half-wave current generator respectively, for pair
Alternating current is filtered and the input current as the impulse voltage generator and power frequency half-wave current generator；
The power frequency half-wave current generator is for generating power frequency half-wave current and flowing through institute in the power frequency half-wave current
It states thyristor and turns off the thyristor after completing zero passage detection and enter reverse recovery；
The impulse voltage generator is in parallel with the power frequency half-wave current generator, for reversed extensive to turning off and entering
The thyristor of different moments applies two fingers number surge voltage wave to simulate the effect of transient state pulse electric stress in the multiple phase；
The thyristor is in parallel with the impulse voltage generator, power frequency half-wave current generator respectively；
The control system in Control experiment device for respectively switching according to setting timing conducting.
Preferably, the power frequency half-wave current generator includes: LC oscillating capacitance Cr, LC oscillation inductance Lr, high-pressure thyristor
Test product and IGBT group module.
Preferably, the impulse voltage generator includes: main capacitance C1, damping resistance Rd, Thyristors in series switch SW, wave
Head resistance Rf, wave terminal resistance RtAnd load lateral capacitance CL；Wherein,
The main capacitance C1Through damping resistance RdWith Thyristors in series switch connect after with wave front resistance RfAnd wave terminal resistance Rt
Parallel connection constitutes discharge loop；
The wave front resistance RfWith load lateral capacitance CLSeries connection；
The wave terminal resistance RtGround connection.
Preferably, the main capacitance C1With wave front resistance RfAnd wave terminal resistance RtDischarge loop is constituted, for generating two fingers number
Surge voltage wave.
Preferably, the wave front time of the two fingers number surge voltage wave and half time to peak pass through wave front resistance RfAnd wave rear
Resistance RtIt adjusts.
It preferably, include capacitor charging circuit in the impulse voltage generator and power frequency half-wave current generator.
Preferably, the capacitor charging circuit includes: protective resistance Rs, positive thyristor V1, reversed thyristor V2, brilliant lock
Pipe trigger module, step-up transformer and single-phase rectification bridge.
Preferably, the output voltage in the capacitor charging circuit is by adjusting the positive thyristor V1With reversed brilliant lock
Pipe V2Angle of flow controlled.
Preferably, the automatic test device further includes input and display device, for inputting parameter and display simulation
Test result.
The disclosure also provides a kind of method of simulation transient state pulse electric stress effect, includes the following steps:
S100: alternating current charges to power frequency half-wave current generator and impulse voltage generator after filtering；
S200: power frequency half-wave current generator generates power frequency half-wave current after completing charging and flows through thyristor, works as power frequency
After half-wave current completes zero passage detection, thyristor turns off and enters reverse recovery；
S300: impulse voltage generator generates two fingers number surge voltage wave after completing charging and is applied into Reverse recovery
The thyristor of phase is to complete the simulation that transient state pulse electric stress acts on.
Disclosure bring has the beneficial effect that this experimental rig can turn off in thyristor and enter in reverse recovery not
It is accumulated for a long time by applying the high-voltage pulse of different amplitudes, different steepness with simulated high-pressure direct current transportation thyristor in the same time
The operating condition acted on by transient state pulse electric stress.
Detailed description of the invention
Fig. 1 is a kind of structural frames of the automatic test device of simulation transient state pulse electric stress effect shown in the disclosure
Figure；
Fig. 2 is the circuit structure diagram in capacitor charging circuit in impulse voltage generator and power frequency half-wave current generator；
Fig. 3 is the circuit structure diagram of impulse voltage generator；
Fig. 4 is the circuit structure diagram of power frequency half-wave current generator.
Specific embodiment
Below in conjunction with attached Fig. 1 to Fig. 4, technical scheme in the embodiment of the invention is clearly and completely described, shows
So, the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the implementation in the present invention
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The scope of protection of the invention.
Referring to Fig. 1, a kind of automatic test device of simulation transient state pulse electric stress effect, comprising: electromagnetic interface filter, punching
Hit voltage generator, power frequency half-wave current generator, control system and thyristor；Wherein,
The electromagnetic interface filter is connected with the impulse voltage generator and power frequency half-wave current generator respectively, for pair
Alternating current is filtered and the input current as the impulse voltage generator and power frequency half-wave current generator；
The power frequency half-wave current generator is for generating power frequency half-wave current and flowing through institute in the power frequency half-wave current
After stating thyristor and completing zero passage detection, the thyristor turns off and enters reverse recovery；
The impulse voltage generator is in parallel with the power frequency half-wave current generator, for reversed extensive to turning off and entering
The thyristor of different moments applies voltage pulse in the multiple phase；
The thyristor is in parallel with the impulse voltage generator, power frequency half-wave current generator respectively；
The control system is for the switch in Control experiment device according to setting timing conducting.
Above-described embodiment constitutes the complete technical solution of the disclosure, and the technical program can turn off and enter in thyristor
Different moments in reverse recovery are by applying the high-voltage pulse of different amplitudes, different steepness with simulated high-pressure direct current transportation use
The operating condition that thyristor is acted on by transient state pulse electric stress for a long time is research thyristor shape under the effect of transient state pulse electric stress
The basis of state variation.
In another embodiment, as shown in Fig. 2, impulse voltage generator includes: main capacitance C1, damping resistance Rd, thyristor
Tandem tap SW, wave front resistance Rf, wave terminal resistance RtAnd load lateral capacitance CL.Wherein, main capacitance C1Through damping resistance RdWith crystalline substance
Brake tube tandem tap series connection after with wave front resistance RfAnd wave terminal resistance RtParallel connection constitutes discharge loop, wave front resistance RfWith load-side
Capacitor CLSeries connection, wave terminal resistance RtGround connection.
The course of work of the impulse voltage generator describes are as follows: control system gives main capacitance C by capacitor charging circuit1It fills
Electricity then controls thyristor string switch SW and opens, pass through main capacitance C to setting voltage1With wave front resistance RfAnd wave terminal resistance RtStructure
At discharge loop electric discharge can form two fingers number surge voltage wave and be applied to thyristor.It should be noted that two fingers number impact electricity
Press the amplitude of wave can be by controlling main capacitance C1On charging voltage value be adjusted, the wave front time of two fingers number surge voltage wave
Wave front resistance R can be passed through with half time to peakf, wave terminal resistance RtAnd load lateral capacitance CLValue adjust.
In another embodiment, as shown in figure 3, power frequency half-wave current generator includes LC oscillating capacitance Cr, LC oscillation electricity
Feel Lr, high-pressure thyristor test product and IGBT group module.
The course of work of the power frequency half-wave current generator describes are as follows: LC oscillating capacitance CrExternal capacitor charge circuit is to it
Charging, to CrAfter charging to desired voltage, control system Setting signal triggers high-pressure thyristor by IGBT group module
Test product conducting flows through high-pressure thyristor test product by the power frequency half-wave current that LC discharge loop generates pulsewidth 10ms, this power frequency half
After wave electric current is down to high-pressure thyristor test product maintenance current values, high-pressure thyristor test product turns off and enters reverse recovery, can
Different moments, which apply high-pressure thyristor test product, in reverse recovery impacts electricity by the two fingers number that impulse voltage generator is formed
Wave is pressed, so as to simulate in actual condition thyristor by the situation of cumulative frequency voltge surge.
In another embodiment, as shown in figure 4, capacitor charging in impulse voltage generator and power frequency half-wave current generator
Circuit includes: protective resistance Rs, positive thyristor V1, reversed thyristor V2, IGBT group module, step-up transformer and single-phase
Rectifier bridge.
The course of work in the capacitor charging circuit describes are as follows: alternating current by after EMI module filtered after step-up transformer boosts
It is charged by single-phase rectification bridge to required charging capacitor, meanwhile, control system is when alternating current is in the positive half period of half-sinusoid
Positive thyristor V is adjusted by IGBT group module1Angle of flow, when alternating current is in the negative half-cycle of half-sinusoid lead to
It crosses IGBT group module and adjusts reversed thyristor V2Angle of flow, to realize to the controllable adjustment of output voltage.
In another embodiment, the automatic test device further includes input and display device, for input parameter and
Show analog reslt.
It applies specific embodiment in the disclosure principle and embodiment of the disclosure is described in detail, the above reality
The application for applying example is only used for the application method and its thinking for helping to understand the disclosure, does not constitute the limit to disclosure application scenarios
System.There will be changes according to the actual situation in specific embodiments and applications for the disclosure, is not departing from the disclosure
In the case where technical characteristic given by technical solution, to increase made by technical characteristic, deform or with the same content in this field
Replacement, the protection scope of the disclosure should all be belonged to.
Claims (10)
1. a kind of automatic test device of simulation transient state pulse electric stress effect, comprising: electromagnetic interface filter, power frequency half-wave current
Generator, impulse voltage generator, control system and thyristor；Wherein,
The electromagnetic interface filter is connected with the impulse voltage generator and power frequency half-wave current generator respectively, for alternating current
It is filtered and the input current as the impulse voltage generator and power frequency half-wave current generator；
The power frequency half-wave current generator is for generating power frequency half-wave current and flowing through the crystalline substance in the power frequency half-wave current
The thyristor is turned off after brake tube and completion zero passage detection and enters reverse recovery；
The impulse voltage generator is in parallel with the power frequency half-wave current generator, is used for shutdown and enters reverse recovery
The thyristor of interior different moments applies two fingers number surge voltage wave to simulate the effect of transient state pulse electric stress；
The thyristor is in parallel with the impulse voltage generator, power frequency half-wave current generator respectively；
The control system is for the switch in Control experiment device according to setting timing conducting.
2. experimental rig according to claim 1, which is characterized in that preferred, the power frequency half-wave current generator packet
It includes: LC oscillating capacitance Cr, LC oscillation inductance Lr, high-pressure thyristor test product and IGBT group module.
3. experimental rig according to claim 1, which is characterized in that the impulse voltage generator includes: main capacitance C1、
Damping resistance Rd, Thyristors in series switch SW, wave front resistance Rf, wave terminal resistance RtAnd load lateral capacitance CL；Wherein,
The main capacitance C1Through damping resistance RdWith Thyristors in series switch connect after with wave front resistance RfAnd wave terminal resistance RtIt is in parallel
Constitute discharge loop；
The wave front resistance RfWith load lateral capacitance CLSeries connection；
The wave terminal resistance RtGround connection.
4. experimental rig according to claim 3, which is characterized in that the main capacitance C1With wave front resistance RfAnd wave rear electricity
Hinder RtDischarge loop is constituted, for generating two fingers number surge voltage wave.
5. experimental rig according to claim 4, which is characterized in that the wave front time of the two fingers number surge voltage wave and
Half time to peak passes through wave front resistance RfWith wave terminal resistance RtIt adjusts.
6. experimental rig according to claim 1, which is characterized in that the impulse voltage generator and power frequency half-wave current
It include capacitor charging circuit in generator.
7. experimental rig according to claim 6, which is characterized in that the capacitor charging circuit includes: protective resistance Rs、
Positive thyristor V1, reversed thyristor V2, IGBT group module, step-up transformer and single-phase rectification bridge.
8. experimental rig according to claim 7, which is characterized in that the output voltage in the capacitor charging circuit is to pass through
Adjust the positive thyristor V1With reversed thyristor V2Angle of flow controlled.
9. experimental rig according to claim 1, which is characterized in that the automatic test device further includes input and shows
Showing device, for inputting parameter and display analog reslt.
10. a kind of method of experimental rig simulation transient state pulse electric stress effect according to claim 1, including walk as follows
It is rapid:
S100: alternating current charges to power frequency half-wave current generator and impulse voltage generator after filtering；
S200: power frequency half-wave current generator generates power frequency half-wave current after completing charging and flows through thyristor, when power frequency half-wave
After electric current completes zero passage detection, thyristor turns off and enters reverse recovery；
S300: impulse voltage generator generates two fingers number surge voltage wave after completing charging and is applied into reverse recovery
Thyristor is to complete the simulation that transient state pulse electric stress acts on.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910378746.9A CN110095715A (en) | 2019-05-07 | 2019-05-07 | A kind of automatic test device and method of the effect of simulation transient state pulse electric stress |
| CN201911170066.4A CN111239595A (en) | 2019-05-07 | 2019-11-25 | Automatic test device and method for simulating transient pulse electrical stress action |
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| CN201910378746.9A CN110095715A (en) | 2019-05-07 | 2019-05-07 | A kind of automatic test device and method of the effect of simulation transient state pulse electric stress |
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| CN201910378746.9A Pending CN110095715A (en) | 2019-05-07 | 2019-05-07 | A kind of automatic test device and method of the effect of simulation transient state pulse electric stress |
| CN201911170066.4A Pending CN111239595A (en) | 2019-05-07 | 2019-11-25 | Automatic test device and method for simulating transient pulse electrical stress action |
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Cited By (2)
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| CN114236267A (en) * | 2021-11-23 | 2022-03-25 | 西安西电电力系统有限公司 | Device for applying fault current based on high-capacity power electronic switch and test method |
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| CN2884649Y (en) * | 2006-03-17 | 2007-03-28 | 中国电力科学研究院 | High voltage large capacity pulse current capacitor constant current charger |
| CN2904470Y (en) * | 2006-03-17 | 2007-05-23 | 中国电力科学研究院 | Surge voltage generator suitable for high power valve sample |
| CN105759186A (en) * | 2016-03-31 | 2016-07-13 | 西安交通大学 | GIS (Gas Insulated Switchgear) on-site traveling wave test method and system |
| CN106707127A (en) * | 2017-03-10 | 2017-05-24 | 云南电网有限责任公司电力科学研究院 | Industrial frequency impact synthesis test loop for testing thyristor level reverse restoration characteristics |
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| CN112271693A (en) * | 2020-09-18 | 2021-01-26 | 国网宁夏电力有限公司电力科学研究院 | Power frequency first-half wave fault current generation method and transient dynamic stability detection method |
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| CN114236267A (en) * | 2021-11-23 | 2022-03-25 | 西安西电电力系统有限公司 | Device for applying fault current based on high-capacity power electronic switch and test method |
| CN114236267B (en) * | 2021-11-23 | 2024-01-30 | 西安西电电力系统有限公司 | Device for applying fault current based on high-capacity power electronic switch and test method |
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| CN111239595A (en) | 2020-06-05 |
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