CN106872834A - Flexible direct current transmission converter valve submodule Power operation experimental rig and test method - Google Patents
Flexible direct current transmission converter valve submodule Power operation experimental rig and test method Download PDFInfo
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- CN106872834A CN106872834A CN201710242272.6A CN201710242272A CN106872834A CN 106872834 A CN106872834 A CN 106872834A CN 201710242272 A CN201710242272 A CN 201710242272A CN 106872834 A CN106872834 A CN 106872834A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 32
- 238000010998 test method Methods 0.000 title claims abstract description 10
- 230000000295 complement effect Effects 0.000 claims abstract description 32
- 239000003990 capacitor Substances 0.000 claims description 32
- 238000001816 cooling Methods 0.000 claims description 11
- 230000006641 stabilisation Effects 0.000 claims description 5
- 238000002474 experimental method Methods 0.000 abstract description 10
- 238000012360 testing method Methods 0.000 description 23
- 230000035882 stress Effects 0.000 description 9
- 230000005611 electricity Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 238000011217 control strategy Methods 0.000 description 2
- 208000033748 Device issues Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000011105 stabilization Methods 0.000 description 1
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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
- G01R31/003—Environmental or reliability tests
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Abstract
The invention discloses a kind of flexible direct current transmission converter valve submodule Power operation experimental rig, including accompanying die trial block, treating die trial block, load reactance device and direct current complementary energy power supply, the output high-pressure side for accompanying die trial block is connected with the output high-pressure side for treating die trial block by the load reactance device, described to accompany the output low-pressure side of die trial block and treat that the output low-pressure side of die trial block is joined directly together；The direct current complementary energy power supply is accompanied die trial block for described in and treats that die trial block provides power input simultaneously.The invention also discloses a kind of flexible direct current transmission converter valve submodule Power operation test method, tested using above-mentioned flexible direct current transmission converter valve submodule Power operation, the Power operation experiment of even more than practical stress suitable with actual condition can be provided, be that valve submodule puts into actually used offer reliable authentication.
Description
Technical field
The present invention relates to a kind of flexible direct current transmission converter valve submodule Power operation experimental rig and test method, belong to
Power electronics is in power system application field.
Background technology
Concept based on electric power electronic module, modularization multi-level converter (MMC) is by several structure identicals
Module (SM) is composed in series, its power and voltage class it is main by valve submodule series connection series, the through-current capability of valve submodule and
Compressive resistance is determined, therefore valve submodule is the key components for influenceing the reliable and stable operation of converter valve.Flexibility based on MMC
Direct current transportation device, input engineering need to fully be verified, to ensure the change of current from the angle of reliability using preceding to valve submodule
Valve system safe and stable operation.
The failure of each component in valve submodule inside is relevant with the electric heating stress accumulation that it undergoes in the process of running：Both
It is probably electromagnetic transient failure；It is also likely to be that the Thermal Fatigue Damage for depending on the time accumulates caused ageing failure, mainly receives
Caused by each component internal electric heating unequal power distribution.Therefore the reliability demonstration of valve submodule experiment is mainly from the electricity that it is subjected to
Thermal stress angle is started with.But MMC converter valves generally have high voltage, high current, the features such as series is more, capacity is big, directly take
Build that to be equal to the experimental enviroment of actual operating mode be extremely difficult, therefore the method for equivalent test is usually taken to MMC valve
Submodule is verified.
Can the main purpose of Power operation experimental rig be to test the voltage of submodule, electric current, temperature iso-stress meet
The operation steady in a long-term of device.
The content of the invention
The purpose of the present invention is the defect for overcoming prior art, there is provided a kind of flexible direct current transmission converter valve submodule power
Operating test device, it is possible to provide the Power operation experiment of even more than practical stress suitable with actual condition, is valve submodule
Block puts into actually used offer reliable authentication.
Another object of the present invention is to provide a kind of flexible direct current transmission converter valve submodule Power operation experiment side
Method, is tested using above-mentioned flexible direct current transmission converter valve submodule Power operation experimental rig.
Realizing above-mentioned purpose technical scheme is：Flexible direct current transmission converter valve submodule Power operation experimental rig, including
Accompany die trial block, treat die trial block, load reactance device L and direct current complementary energy power supply, wherein：
It is described accompany die trial block include capacitor C1, let out can resistance R1, IGBT device T11, anti-paralleled diode device D11,
IGBT device T12, anti-paralleled diode device D12, IGCT VT1 and by-pass switch K1, the capacitor C1 and let out can resistance
R1 is in parallel, and the IGBT device T11 is in parallel with the energy resistance R1 that lets out after being connected with IGBT device T12, the pole of the inverse parallel two
Tube device D11 is connected with the IGBT device T11；The anti-paralleled diode device D12 is connected with the IGBT device T12；
One end of the IGCT VT1 is connected with the abutment end of the IGBT device T11 and IGBT device T12, the other end with it is described
IGBT device T12 is connected with the abutment end for letting out energy resistance R1；The by-pass switch K1 is in parallel with the IGCT VT1；
It is described treat die trial block include capacitor C2, let out can resistance R2, IGBT device T21, anti-paralleled diode device D21,
IGBT device T22, anti-paralleled diode device D22, IGCT VT2 and by-pass switch K2, the capacitor C2 and let out can resistance
R2 is in parallel, and the IGBT device T21 is in parallel with the energy resistance R2 that lets out after being connected with IGBT device T22, the pole of the inverse parallel two
Tube device D21 is connected with the IGBT device T21；The anti-paralleled diode device D22 is connected with the IGBT device T22；
One end of the IGCT VT2 is connected with the abutment end of the IGBT device T21 and IGBT device T22, the other end with it is described
IGBT device T22 is connected with the abutment end for letting out energy resistance R2；The by-pass switch K2 is in parallel with the IGCT VT2；
The IGBT device T11 and let out can the abutment end of resistance R1 with the IGBT device T21 and let out the phase of energy resistance R2
End is connect to be connected；
One abutment end of the by-pass switch K1 and IGCT VT1 and the one of the by-pass switch K2 and IGCT VT2
Individual abutment end is connected；
Another abutment end of the by-pass switch K1 and IGCT VT1 is with the by-pass switch K2's and IGCT VT2
Another abutment end is connected by the load reactance device L；
The direct current complementary energy power supply include complementary energy power supply E, charging resistor Rc and disconnecting switch Kc, the disconnecting switch Kc with
The charging resistor Rc is in parallel；
The complementary energy power supply E is in parallel with the capacitor C1 after being connected with the charging resistor Rc.
Above-mentioned flexible direct current transmission converter valve submodule Power operation experimental rig, wherein, it is described to accompany the defeated of die trial block
Go out high-pressure side and be connected by the load reactance device L with the output high-pressure side for treating die trial block, the output low pressure for accompanying die trial block
Side is joined directly together with the output low-pressure side for treating die trial block；
The direct current complementary energy power supply is accompanied die trial block for described in and treats that die trial block provides power input, the power input simultaneously
Electric energy after electric capacity before including putting into operation charges and puts into is supplemented；
After the experimental rig input stable operation, the disconnecting switch Kc closures reduce having for the charging resistor Rc
Work(is consumed.
Above-mentioned flexible direct current transmission converter valve submodule Power operation experimental rig, wherein, it is described to accompany die trial block and treat
Die trial block is taken from flexible DC power transmission MMC valve.
Flexible direct current transmission converter valve submodule Power operation test method, using above-mentioned flexible direct current transmission converter valve
Submodule Power operation experimental rig is tested, and is comprised the following steps：
S1, cooling system puts into operation, is closed at the direct current complementary energy power supply for capacitor C1 and capacitor C2 charges；
S2, closure disconnecting switch Kc bypasses charging resistor Rc, by controller to the power device for accompanying die trial block
Trigger pulse is issued with the power device for treating die trial block, cooling system enters steady operational status；
S3, the power device of die trial block is accompanied described in locking and the power device trigger pulse of die trial block is treated, cuts off described straight
Stream complementary energy power supply；
S4, energy lets out energy resistance R1 described in and lets out energy resistance correspondingly in the capacitor C1 and capacitor C2
R2 discharges, and after a period of stabilisation, cuts off cooling system.
Above-mentioned flexible direct current transmission converter valve submodule Power operation test method, wherein, the work(for accompanying die trial block
Rate device includes IGBT device T11 and its anti-paralleled diode device D11；The power device for treating die trial block includes IGBT devices
Part T12 and its anti-paralleled diode device D12.
Flexible direct current transmission converter valve submodule Power operation experimental rig of the invention and test method, by electric capacity and
Reactor resonance produces electric current needed for experiment, and the experimental rig is simple to operation, and the type approval test that can meet submodule of MMC valve will
Ask, measure electromagnetic transient and the steady state parameters such as voltage stress, current stress and the thermal stress of valve submodule, can be used for valve submodule
Engineering design, compared with prior art, beneficial effect is：
1st, in the experimental rig that the present invention is provided：Accompany die trial block and treat die trial block and be taken from flexible DC power transmission MMC valve, its
Internal structure and the position in experimental rig of the invention are completely the same, can exchange, therefore can be surveyed simultaneously in test
Two test product valve submodules of examination, greatly improve efficiency during batch testing；
2nd, in the experimental rig that the present invention is provided：Mainly pass through nothing between test product valve submodule capacitor and load reactance device
Work(is exchanged and produces loop current, and complementary energy power supply E only needs to set up capacitor initial voltage with having on a small quantity needed for maintenance system operation
Work(is lost, therefore hookup is relatively low to the capacity requirement of complementary energy power supply E；
3rd, in the experimental rig that the present invention is provided：Direct current complementary energy power supply is tried and to treat that die trial block provides power defeated to accompany simultaneously
Enter, can effectively ensure that the voltage stabilization of both capacitors, it is easy to accomplish the internal control and stable operation of experimental rig；
4th, in the experimental rig that the present invention is provided：Controlled current flow on load reactance device, by certain control strategy, can
The electric current consistent with actual operating mode, the electric current is produced to include DC component and AC compounent, really reproduce submodule of MMC valve
Actual current；
5th, the hookup that experimental rig of the invention is used can meet test requirements document, it is possible to provide suitable with actual condition
The even more than Power operation experiment of practical stress, is that valve submodule puts into actually used offer reliable authentication.
Brief description of the drawings
Fig. 1 is the circuit topology figure of flexible direct current transmission converter valve submodule Power operation experimental rig of the invention；
Fig. 2 is the electricity that the experiment of flexible direct current transmission converter valve submodule Power operation is carried out using experimental rig of the invention
Pressure test waveform；
Fig. 3 is the electricity that the experiment of flexible direct current transmission converter valve submodule Power operation is carried out using experimental rig of the invention
Stream test waveform.
Specific embodiment
In order that those skilled in the art are better understood when technical scheme, it is right below in conjunction with the accompanying drawings
Its specific embodiment is described in detail：
Refer to Fig. 1, a kind of flexible direct current transmission converter valve submodule Power operation experimental rig, including accompany die trial block 1,
Treat die trial block 2, load reactance device L and direct current complementary energy power supply 3.
Accompanying die trial block 1 includes capacitor C1, lets out energy resistance R1, IGBT device T11, anti-paralleled diode device D11, IGBT
Device T12, anti-paralleled diode device D12, IGCT VT1 and by-pass switch K1, capacitor C1 and let out can resistance R1 it is in parallel,
IGBT device T11 connected with IGBT device T12 after with it is described let out can resistance R1 it is in parallel, anti-paralleled diode device D11 with it is described
IGBT device T11 is connected；Anti-paralleled diode device D12 is connected with IGBT device T12；One end of IGCT VT1 and IGBT devices
Part T11 is connected with the abutment end of IGBT device T12, the other end and IGBT device T12 and let out can the abutment end of resistance R1 be connected；It is other
Way switch K1 is in parallel with IGCT VT1.
Treat that die trial block 2 includes capacitor C2, letting out can resistance R2, IGBT device T21, anti-paralleled diode device D21, IGBT
Device T22, anti-paralleled diode device D22, IGCT VT2 and by-pass switch K2, capacitor C2 and let out can resistance R2 it is in parallel,
IGBT device T21 connected with IGBT device T22 after with let out can resistance R2 it is in parallel, anti-paralleled diode device D21 and IGBT device
T21 is connected；Anti-paralleled diode device D22 is connected with IGBT device T22；One end of IGCT VT2 and IGBT device T21 and
The abutment end of IGBT device T22 is connected, and the other end and IGBT device T22 and lets out the abutment end of energy resistance R2 and is connected；By-pass switch
K2 is in parallel with IGCT VT2；
IGBT device T11 and let out can resistance R1 abutment end and IGBT device T21 and let out the abutment end of energy resistance R2 and be connected；
One abutment end of by-pass switch K1 and IGCT VT1 is connected with an abutment end of by-pass switch K2 and IGCT VT2；Bypass
Another abutment end of K1 and IGCT VT1 is switched with another abutment end of by-pass switch K2 and IGCT VT2 by described
Load reactance device L is connected.
Direct current complementary energy power supply 3 includes complementary energy power supply E, charging resistor Rc and disconnecting switch Kc, disconnecting switch Kc and the electricity that charges
Resistance Rc is in parallel；Complementary energy power supply E is in parallel with the capacitor C1 after being connected with the charging resistor Rc.
The output high-pressure side for accompanying die trial block 1 is connected with the output high-pressure side for treating die trial block 2 by load reactance device L, accompanies examination
The output low-pressure side of module 1 is joined directly together with the output low-pressure side for treating die trial block 2；Direct current complementary energy power supply 3 is simultaneously to accompany die trial block 1
With treat that die trial block 2 provides power input, including electric capacity before putting into operation charge and input after electric energy supplement；Experimental rig is thrown
After entering stable operation, disconnecting switch Kc closures reduce the active consumption of charging resistor Rc.Produced by electric capacity and reactor resonance
Electric current needed for experiment.The experimental rig is simple to operation, can meet the type approval test requirement of submodule of MMC valve, measures valve submodule
Electromagnetic transient and the steady state parameters such as the voltage stress of block, current stress and thermal stress, can be used for the engineering design of valve submodule.Accompany
Die trial block and treat that die trial block is taken from flexible DC power transmission MMC valve.
A kind of flexible direct current transmission converter valve submodule Power operation test method, using the above-mentioned flexible DC power transmission change of current
Valve submodule Power operation experimental rig is tested, and is comprised the following steps：
S1, cooling system puts into operation, is closed at direct current complementary energy power supply for capacitor C1 and capacitor C2 charges；
S2, closure disconnecting switch Kc bypasses charging resistor Rc, and die trial block 1 and die trial block 2 is treated to accompanying by controller
Power device issues trigger pulse, and cooling system enters steady operational status；
S3, locking is accompanied die trial block 1 and treats the power device trigger pulse of die trial block 2, cuts off direct current complementary energy power supply；
Energy is discharged by letting out energy resistance R1 and letting out energy resistance R2 correspondingly in S4, capacitor C1 and capacitor C2,
After a period of stabilisation, cooling system is cut off.
Accompanying the power device of die trial block 1 includes IGBT device T11 and its anti-paralleled diode device D11；Treat die trial block 2
Power device includes IGBT device T12 and its anti-paralleled diode device D12.
Accompany die trial block 1 and treat that the internal structure of die trial block 2 is just the same；The effect of complementary energy power supply E is mainly foundation and accompanies examination
Module 1 and treat electric capacity in die trial block 2 initial voltage and complementary testing during active loss, charging resistor Rc is in complementary energy
Power supply E is just switched on playing limitation dash current during electric capacity.
When the hookup starts so that cooling system and complementary energy power-supply system put into operation, disconnecting switch Kc is kept to break
Open, the capacitor C1 that will accompany die trial block 1 and the capacitor C2 for treating die trial block 2 are charged to setting value, then close disconnecting switch Kc
So as to reduce active consumption；By controller to accompanying die trial block 1 and treat power device (the IGBT device T11 and its anti-of die trial block 2
Parallel diode device D11, IGBT device T12 and its anti-paralleled diode device D12) trigger pulse is issued, by certain
Control strategy, produces the electric current consistent with actual operating mode, and the electric current includes DC component and AC compounent, so that system is entered
Enter steady operational status, now complementary energy system provides power consumption for power device；During off-test, the He of die trial block 1 is accompanied in locking
The trigger pulse of die trial block 2 is treated, by the excision of complementary energy system, after a period of stabilisation, cooling system is cut off.
Fig. 2 and Fig. 3 is referred to, with reference to this example demonstrates that advantages of the present invention, accompanies die trial block 1 and treat in embodiment
The condenser voltage of die trial block 2 is u, and load reactance device L electric currents are i.Flexible DC power transmission MMC converter valve submodule Power operations
The operation test voltage waveform of experimental rig is as shown in Fig. 2 current waveform is as shown in Figure 3.Operation test voltage waveform is submodule
Block (accompany die trial block 1 and treat die trial block 2) electric capacity both end voltage waveform, voltage is basicly stable, fluctuation very little (see Fig. 2)；Operation examination
Galvanoscope is the electric current on load reactance device L, is the alternating current containing DC component Yu AC compounent simultaneously.
Operating test device of the invention, the test voltage of setting is set up by complementary energy power supply to submodule electric capacity, you can
By applying certain power electronics control device, by accompanying die trial block and treating that the IGBT of die trial block carries out switch modulation, adjusting
Its output voltage is saved, so as to change the voltage at load reactance device L two ends, and then changes the electric current passed through on load reactance device L, obtained
Voltage, current stress operating condition of test to required for test product submodule, realize the purpose of steady-state operation heat test.
In sum, operating test device of the invention and experimental technique, son is tested by the method for equivalent type approval test
The voltage of module, electric current, temperature iso-stress, its design requirement for whether meeting valve submodule, it is ensured that the reliability of whole valve system
Operation, it is simple to operation, the requirement of multiple valve submodule electric heating stress can be measured.
Those of ordinary skill in the art it should be appreciated that the embodiment of the above be intended merely to explanation the present invention,
And be not used as being limitation of the invention, as long as in spirit of the invention, the change to embodiment described above
Change, modification will all fall in the range of claims of the present invention.
Claims (5)
1. flexible direct current transmission converter valve submodule Power operation experimental rig, it is characterised in that including accompanying die trial block, treating die trial
Block, load reactance device L and direct current complementary energy power supply, wherein：
It is described to accompany die trial block including capacitor C1, let out energy resistance R1, IGBT device T11, anti-paralleled diode device D11, IGBT
Device T12, anti-paralleled diode device D12, IGCT VT1 and by-pass switch K1, the capacitor C1 and let out can resistance R1 simultaneously
Connection, the IGBT device T11 is in parallel with the energy resistance R1 that lets out after being connected with IGBT device T12, the anti-paralleled diode device
Part D11 is connected with the IGBT device T11；The anti-paralleled diode device D12 is connected with the IGBT device T12；It is described
One end of IGCT VT1 is connected with the abutment end of the IGBT device T11 and IGBT device T12, the other end and the IGBT devices
Part T12 is connected with the abutment end for letting out energy resistance R1；The by-pass switch K1 is in parallel with the IGCT VT1；
It is described to treat that die trial block includes capacitor C2, letting out resistance R2, IGBT device T21, anti-paralleled diode device D21, IGBT
Device T22, anti-paralleled diode device D22, IGCT VT2 and by-pass switch K2, the capacitor C2 and let out can resistance R2 simultaneously
Connection, the IGBT device T21 is in parallel with the energy resistance R2 that lets out after being connected with IGBT device T22, the anti-paralleled diode device
Part D21 is connected with the IGBT device T21；The anti-paralleled diode device D22 is connected with the IGBT device T22；It is described
One end of IGCT VT2 is connected with the abutment end of the IGBT device T21 and IGBT device T22, the other end and the IGBT devices
Part T22 is connected with the abutment end for letting out energy resistance R2；The by-pass switch K2 is in parallel with the IGCT VT2；
The IGBT device T11 and let out can the abutment end of resistance R1 with the IGBT device T21 and let out the abutment end of energy resistance R2
It is connected；
One abutment end of the by-pass switch K1 and IGCT VT1 and a phase of the by-pass switch K2 and IGCT VT2
End is connect to be connected；
Another abutment end of the by-pass switch K1 and IGCT VT1 is another with the by-pass switch K2's and IGCT VT2
Individual abutment end is connected by the load reactance device L；
The direct current complementary energy power supply include complementary energy power supply E, charging resistor Rc and disconnecting switch Kc, the disconnecting switch Kc with it is described
Charging resistor Rc is in parallel；
The complementary energy power supply E is in parallel with the capacitor C1 after being connected with the charging resistor Rc.
2. flexible direct current transmission converter valve submodule Power operation experimental rig according to claim 1, it is characterised in that
The output high-pressure side for accompanying die trial block is connected with the output high-pressure side for treating die trial block by the load reactance device L, described to accompany
The output low-pressure side of die trial block is joined directly together with the output low-pressure side for treating die trial block；
The direct current complementary energy power supply is accompanied die trial block for described in and treats that die trial block provides power input simultaneously, and the power input includes
Electric energy after electric capacity before putting into operation charges and puts into is supplemented；
After the experimental rig input stable operation, the disconnecting switch Kc closures reduce the active of charging resistor Rc and disappear
Consumption.
3. flexible direct current transmission converter valve submodule Power operation experimental rig according to claim 1, it is characterised in that
It is described to accompany die trial block and treat that die trial block is taken from flexible DC power transmission MMC valve.
4. flexible direct current transmission converter valve submodule Power operation test method, defeated using the flexible direct current described in claim 1
Electric converter valve submodule Power operation experimental rig is tested, it is characterised in that comprised the following steps：
S1, cooling system puts into operation, is closed at the direct current complementary energy power supply for capacitor C1 and capacitor C2 charges；
S2, closure disconnecting switch Kc bypasses charging resistor Rc, is accompanied the power device of die trial block and treated to described by controller
The power device of die trial block issues trigger pulse, and cooling system enters steady operational status；
S3, the power device of die trial block is accompanied described in locking and the power device trigger pulse of die trial block is treated, is cut off the direct current and is mended
Can power supply；
S4, energy lets out energy resistance R1 described in and lets out energy resistance R2 and releases correspondingly in the capacitor C1 and capacitor C2
Put, after a period of stabilisation, cut off cooling system.
5. flexible direct current transmission converter valve submodule Power operation test method according to claim 4, it is characterised in that
The power device for accompanying die trial block includes IGBT device T11 and its anti-paralleled diode device D11；The work(for treating die trial block
Rate device includes IGBT device T12 and its anti-paralleled diode device D12.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710242272.6A CN106872834A (en) | 2017-04-12 | 2017-04-12 | Flexible direct current transmission converter valve submodule Power operation experimental rig and test method |
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| CN201710242272.6A CN106872834A (en) | 2017-04-12 | 2017-04-12 | Flexible direct current transmission converter valve submodule Power operation experimental rig and test method |
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| CN113406408A (en) * | 2021-05-14 | 2021-09-17 | 南方电网科学研究院有限责任公司 | Flexible direct current converter valve power module bypass switch error-closing test method and circuit |
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