CN105717383B - The hot operating test device of the big component change current valve module of direct current transportation and its test method - Google Patents
The hot operating test device of the big component change current valve module of direct current transportation and its test method Download PDFInfo
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- CN105717383B CN105717383B CN201410738019.6A CN201410738019A CN105717383B CN 105717383 B CN105717383 B CN 105717383B CN 201410738019 A CN201410738019 A CN 201410738019A CN 105717383 B CN105717383 B CN 105717383B
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- 238000012360 testing method Methods 0.000 title claims abstract description 62
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- 238000010998 test method Methods 0.000 title claims abstract description 25
- 238000002474 experimental method Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 4
- 238000009429 electrical wiring Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 4
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- 238000010586 diagram Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005382 thermal cycling Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
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Abstract
The present invention relates to a kind of hot operating test device of the big component change current valve module of direct current transportation and its test method, which includes change current valve module and the saturable reactor for being connected to change current valve module both ends；The change current valve module includes two groups of valve modules of A, B；Every group of valve module is made of saturable reactor and 15 grades of Thyristors in series；Every grade of thyristor is equipped with radiator；The both ends parallel connection afterflow of the saturable reactor has diode；The IGBT group mode is to use small valued resistor by the anode of each thyristor and gate pole short circuit.Test method carries out overall thermal operation test to whole big component converter valve, does not change the overall structure of valve module, it is only necessary to slightly change to subject change current valve module electrical wiring, replace a small amount of thyristor radiator and install experiment busbar additional.The present invention solves experiment high pressure caused by big component change current valve module series thyristor grade is excessive, experiment the problems such as big, test site and equipment are limited with AC power capacity.
Description
Technical field
The present invention relates to a kind of experimental rig of technical field of ultrahigh voltage direct current and its test methods, in particular to
A kind of hot operating test device of the big component change current valve module of direct current transportation and its test method.
Background technology
The converter valve of contemporary extra-high voltage DC transmission system is the principle design-build based on thyristor commutation, as state
The important electrical circuitry equipment of family and expensive assets, DC transmission engineering is after building up, it is desirable that more than stable operation many decades, as straight
The converter valve of transmission system core equipment is flowed, reliability test when dispatching from the factory is necessary link, wherein being directed to single converter valve
The hot operation test of module is exactly the thyristor to module by rated current, by measure the heating temperature of each thyristor come pair
The experiment that the radiator structure of module, the reliability of thyristor are evaluated, the experiment can directly reflect converter valve in thermodynamics
The characteristic of aspect, while test result be other than it can directly determine whether product is qualified, to all brilliant locks during experiment
The thermograph of pipe can also form exclusive " the thermodynamics fingerprint " of every converter valve, on-line monitoring, operation after putting into operation for it
Repair provides original foundation.
Converter valve is made of several deck valve modules, and includes ten a few to tens of thyristors per deck valve module, herein referred
Big component converter valve be that refer exclusively to every include tens valve modules for only reaching the above thyristor.It is domestic at present not yet to propose to be directed to this
The hot operation test scheme of the big component change current valve module of kind, original hot operation test scheme is that thyristor manufacturer is carrying out
The thermal cycling test carried out when thyristor type approval test：The test method is as shown in Fig. 1, makees after 6 thyristors are concatenated
For test item, the anode and gate pole short circuit of every thyristor apply DC voltage, experiment by DC power supply at thyristor both ends
Thyristor is connected immediately after being triggered once when beginning, no longer turns off after switch, enables thyristor electric by adjusting DC power supply
Rheology, this test method can carry out a small amount of thyristor hot operation test, but to big group of tens of grades of Thyristors in series composition
Part change current valve module then needs capacity and the higher DC power supply of test voltage, while being tested thyristor and not triggering commutation repeatedly
Process, in terms of heating principle, due to lacking recovery charge and switching loss link, thermodynamic behaviour and direct current transportation work
The actual conditions of journey are inconsistent.
Invention content
In view of the deficiencies of the prior art, the object of the present invention is to provide a kind of big component change current valve module heat fortune of direct current transportation
Row experimental rig and its test method, the present invention solve caused by big component change current valve module series thyristor grade is excessive
Test high pressure, experiment uses the problems such as AC power capacity is big, test site and equipment are limited, and ensures big component converter valve mould
The hot operation test heating principle of block coincide with Practical Project, and enabling valve module during the test has power frequency commutation process.
The purpose of the present invention is what is realized using following technical proposals：
The present invention provides a kind of big hot operating test device of component change current valve module of direct current transportation, it is improved in that
Described device includes change current valve module and the saturable reactor for being connected to change current valve module both ends；The change current valve module includes
A, two groups of valve modules of B；Every group of valve module is made of saturable reactor and 15 grades of Thyristors in series；Every grade of thyristor is equipped with heat dissipation
Device；The both ends of the saturable reactor are parallel with fly-wheel diode；The IGBT group mode is will using small valued resistor
The anode and gate pole short circuit of each thyristor.
The present invention also provides a kind of test methods of the big hot operating test device of component change current valve module of direct current transportation, change
It is into place, the hot running test method includes：1. making two groups of 8 grades of thyristor inverse parallels in change current valve module；Or 2.
Make two groups of 7 grades of thyristor inverse parallels in change current valve module, to realize the demand for reducing experiment power supply capacity；The small resistance value electricity
It is 0.5~20 ohm to hinder Standard resistance range.
Further, before hot operation test：15 grades of thyristors of every group of valve module are divided into 1,2 two group, and two
Busbar is welded on the radiator of group thyristor boundary；Wherein：It is first group to close on saturable reactor containing 7 grades of thyristors, respectively
For A-1 group thyristor strings and B-1 group thyristor strings；It is second group, respectively A-2 groups thyristor string and B-2 groups containing 8 grades of thyristors
Thyristor string.
Further, it is described 1. in, the busbar of the busbar and saturable reactor that are welded on each valve module radiator is used
Cable connection, by A-1 group thyristor strings and B-1 group thyristor string short circuits；The saturable reactor of two groups of valve modules of A, B is connected,
And apply the AC power of high current low-voltage between the midpoint of change current valve module, the A-2 groups crystalline substance lock of change current valve module at this time
The two groups of 8 grades of thyristor inverse parallels of pipe string and B-2 group thyristors string, carry out hot operation test；The A-2 when voltage is in positive half period
Group thyristor string conducting, when voltage is in negative half-cycle, B-2 groups thyristor string is connected；
Further, it is described 2. in, the busbar cable connection that will be welded on two groups of valve module radiators of A, B, by A-2 groups
Thyristor string and B-2 group thyristor string short circuits；The saturable reactor of two groups of valve modules of A, B is connected, and in change current valve module
Applying high current low-voltage between midpoint, (high current is ranging from：500-5000 amperes；Low voltage range：5-100 volts) friendship
Galvanic electricity source, at this time two groups of 7 grades of thyristor inverse parallels of the A-1 group thyristor strings of change current valve module and B-1 group thyristors string carry out heat
Operation test；When voltage is in positive half period, A-1 groups thyristor string is connected；The B-1 groups crystalline substance lock when voltage is in negative half-cycle
Pipe string is connected.
Further, the hot operation test includes the following steps：(1) with small resistance value electricity between thyristor anode and gate pole
Hinder short circuit；(2) AC supply voltage is adjusted；(3) IGBT group, electric current reach desired value；
Ranging from 500-5000 amperes of the high current；The low voltage range is 5-100 volts.
Compared with the immediate prior art, the invention has the advantages that：
1) the hot operating test device of the big component change current valve module of direct current transportation provided by the invention and its test method, can solve
Certainly in the case of test site and limited power supply capacity, due to the excessive caused examination of change current valve module thyristor quantity
Test difficult problem：This test method is without splitting change current valve module, it is only necessary to slightly handle equipment wiring, change minute quantity dissipates
Hot device simultaneously installs experiment busbar additional, so that it may carry out overall thermal operation test to entire big component change current valve module.
2) the hot operating test device of the big component change current valve module of direct current transportation provided by the invention and its test method, enable valve
Module has thyristor power frequency commutation process in hot operation test, not only has on-state damage in the heat composition that thyristor is sent out
Consumption, also switching loss, closer to operating condition in Practical Project, test data is more reliable.
3) when being directed to whole big component change current valve module progress overall thermal operation test, without changing the whole of change current valve module
Body structure, and only change a small amount of electrical wiring for being tested module and radiator and the test method for installing experiment busbar additional；
4) positive and negative half period of the positive and negative two groups of anti-parallel thyristor strings to improve AC power utilization rate, make alternating voltage
The test method that two groups of antiparallel thyristor strings can be tested simultaneously, series thyristor grade is enabled to have power frequency commutation process；
5) test method of parallel diode is installed additional on the saturable reactor of valve module：It is provided for change current valve module electric current
Freewheeling path inhibits the inductance both end voltage caused by saturable reactor electric current interrupts suddenly to jump, avoid to testing equipment and
Testing crew damages.
Description of the drawings
Fig. 1 is 6 grades of Thyristors in series thermal cycling test schematic diagrams；
Fig. 2 is the hot operation test electrical schematic diagram of 30 grades of Thyristors in series change current valve modules provided by the invention, wherein (a)
Two groups of 8 grades of thyristor antiparallel connection figures of taste A-2 group thyristor strings and B-2 group thyristors string；(b) the A-1 group thyristor strings for being
With two groups of 7 grades of thyristor string antiparallel connection figures of B-1 group thyristors string；
Fig. 3 is the volt-ampere characteristics of figure of wherein 1 thyristor when being tested under hot running test method provided by the invention.
Specific implementation mode
The specific implementation mode of the present invention is described in further detail below in conjunction with the accompanying drawings.
The present invention provides a kind of big component change current valve module heat of the extra-high voltage direct-current transmission aiming at tens grades of Thyristors in series
Operation test scheme.The present invention can carry out overall thermal operation test to whole big component converter valve, not change the entirety of valve module
Structure, it is only necessary to subject change current valve module electrical wiring is slightly changed, a small amount of thyristor radiator is replaced and installs experiment busbar additional,
Entire testing program principle is simple, it is easy to accomplish.After the test, it is by the component recovery for being tested converter valve wiring and change
It can.
The present invention provides a kind of big hot operating test device of component change current valve module of direct current transportation, which includes converter valve
Module and the saturable reactor for being connected to change current valve module both ends；The change current valve module is made of two groups of valve modules A, B, often
Group valve module is connected by 15 thyristor grades, and there are one saturable reactors for string in every group of component, therefore per deck valve module altogether by 30 grades
Thyristor grade and two saturable reactors are in series.Every grade of thyristor is equipped with radiator；In view of continuing for saturable reactor
Effect is flowed, endangers equipment and personal safety to avoid generating high voltage, it need to be continuous in the parallel connection of saturable reactor both ends during experiment
Diode is flowed, removes diode after experiment.IGBT group mode is to use small valued resistor by the anode of each thyristor
With the direct short circuit of gate pole.This method thyristor partial pressure is uniform, and turn on thyristors shutdown consistency is good, and wiring is easy, it is easy to accomplish.
The present invention also provides a kind of test methods of the big hot operating test device of component change current valve module of direct current transportation, are trying
Before testing, hot operation test grouping is carried out：15 grades of thyristors of every group of valve module are divided into 1,2 two group, are demarcated in two groups of thyristors
Weld busbar on the radiator at place, it is first group to close on saturable reactor containing 7 grades of thyristors, respectively A-1 groups thyristor string with
B-1 group thyristor strings；It is second group, respectively A-2 groups thyristor string and B-2 group thyristor strings containing 8 grades of thyristors.Do experiment it
Preceding to replace original radiator with the radiator with busbar, experiment is unloaded the radiator with busbar after finishing, is gained original
Radiator.
The test method of two groups of components is as follows：
1) when battery of tests, shown in test connection figure such as Fig. 2 (a)：It will be welded on the radiator of each valve module middle section
Two groups of thyristors of A-1, B-1 can be shorting out by the busbar cable connection of the busbar and saturable reactor that connect.By two valve modules
Saturable reactor be connected together, and apply the alternating current of high current low-voltage between midpoint of this point entire valve module
Source, two 8 grades of thyristor string inverse parallels of A-2, B-2 among valve module, carry out hot operation test at this time.Due to being used when experiment
AC power, the A-2 group turn on thyristors when voltage is in positive half period, the B-2 group thyristors when voltage is in negative half-cycle
Conducting.
2) when second group of experiment, shown in test connection figure such as Fig. 2 (b)：It will be welded on two valve module middle section radiators
Two groups of thyristors of A-2, B-2 can be shorting out by the busbar cable connection connect.Equally the saturable reactor of two valve modules is connected
It connects, and applies the AC power of high current low-voltage between this 2 points, at this time A-1, the B-1 of valve module close to saturable reactor
Two 7 grades of thyristor string inverse parallels, carry out hot operation test.The A-1 group turn on thyristors when voltage is in positive half period；Work as electricity
B-1 group turn on thyristors when pressure is in negative half-cycle.
The hot operation test includes the following steps：(1) with small valued resistor short circuit between thyristor anode and gate pole；
(2) AC supply voltage is adjusted；(3) IGBT group, electric current reach desired value；
Ranging from 500-5000 amperes of the high current；The low voltage range is 5-100 volts.
It is illustrated in figure 3 when being tested under hot running test method proposed by the invention wherein 1 thyristor
Volt-ampere characteristics of figure, it is shown in dotted line to flow through the current waveform IVT of the thyristor, it is the terminal voltage of thyristor as shown by the solid line
It is the turn-off power loss section of thyristor, the sections t3 is brilliant that UVT, the wherein sections t1, which are the turn-on consumption section of thyristor, the sections t2,
The conduction loss section of brake tube.
Thyristor at the trial real work in self-rectifying state：Test item thyristor component be both half-wave rectifier bridge and
It is load.So, relative to the hot operation test scheme involved by attached drawing 1, system is equivalent to a DC power supply and subject
Product are integrated into test item itself above, therefore system effectiveness can improve 1 times, can be reduced to the capacity requirement of experiment power supply
50%.
It is involved in the present invention to the application that has been obtained in practice in engineering of hot running test method, in institute of our unit
It in the DC converter valve technology innovation project of implementation, is required according to user, is provided for and replaces valve module thyristor grade members
Service, user's original converter valve is big component change current valve module, and every module includes 30 grades of thyristors, crystalline substance as shown in Fig. 2
The schematic diagram that brake tube part in series simplifies for it.After technological transformation, need to carry out hot operation test, our unit combines practical
Test method set forth in the present invention is proposed, and the valve module completed to technological transformation is tested, through this experiment of user feedback side
Case has carried out abundant verification to the hot service ability of converter valve, and test effect is ideal.
Finally it should be noted that：The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, to the greatest extent
Invention is explained in detail with reference to above-described embodiment for pipe, and those of ordinary skill in the art still can be to this hair
Bright specific implementation mode is modified or replaced equivalently, these without departing from spirit and scope of the invention any modification or
Equivalent replacement, within the claims for applying for the pending present invention.
Claims (1)
1. a kind of test method of the big hot operating test device of component change current valve module of direct current transportation, which is characterized in that the side
Method uses a kind of big hot operating test device of component change current valve module of direct current transportation, and described device includes change current valve module and company
It is connected on the saturable reactor at change current valve module both ends；The change current valve module includes two groups of valve modules of A, B；Every group of valve module is by satisfying
It is constituted with reactor and 15 grades of Thyristors in series；Every grade of thyristor is equipped with radiator；The both ends of the saturable reactor are in parallel
There is fly-wheel diode；The IGBT group mode is to use small valued resistor by the anode of each thyristor and gate pole short circuit；
The hot running test method includes：1. making two groups of 8 grades of thyristor inverse parallels in change current valve module；Or 2. make converter valve
Mould two groups of 7 grades of thyristor inverse parallels in the block, to realize the demand for reducing experiment power supply capacity；The small valued resistor resistance value model
Enclose is 0.5~20 ohm；
Before hot operation test：15 grades of thyristors of every group of valve module are divided into 1,2 two group, and in two groups of thyristor boundarys
Radiator on weld busbar；Wherein：It is first group, respectively A-1 groups thyristor string to close on saturable reactor containing 7 grades of thyristors
With B-1 group thyristor strings；It is second group, respectively A-2 groups thyristor string and B-2 group thyristor strings containing 8 grades of thyristors；
It is described 1. in, by the busbar cable connection of the busbar and saturable reactor that are welded on each valve module radiator, by A-1
Group thyristor string and B-1 group thyristor string short circuits；The saturable reactor of two groups of valve modules of A, B is connected, and in change current valve module
Midpoint between apply the AC power of high current low-voltage, the A-2 group thyristor strings of change current valve module and B-2 groups crystalline substance lock at this time
The two groups of 8 grades of thyristor inverse parallels of pipe string, carry out hot operation test；When voltage is in positive half period, A-2 groups thyristor string is connected,
When voltage is in negative half-cycle, B-2 groups thyristor string is connected；
It is described 2. in, the busbar cable connection that will be welded on two groups of valve module radiators of A, B, by A-2 group thyristor strings and B-2
Group thyristor string short circuit；The saturable reactor of two groups of valve modules of A, B is connected, and is applied greatly between the midpoint of change current valve module
The AC power of current low voltage, at this time the A-1 group thyristor strings of change current valve module and the brilliant locks of 7 grades of two groups of B-1 group thyristors string
Pipe inverse parallel carries out hot operation test；When voltage is in positive half period, A-1 groups thyristor string is connected；When voltage is in negative half
B-1 groups thyristor string is connected when the period；
The hot operation test includes the following steps：(1) with small valued resistor short circuit between thyristor anode and gate pole；(2) it adjusts
Save AC supply voltage；(3) IGBT group, electric current reach desired value；
Ranging from 500-5000 amperes of the high current；The low voltage range is 5-100 volts.
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| CN201410738019.6A CN105717383B (en) | 2014-12-04 | 2014-12-04 | The hot operating test device of the big component change current valve module of direct current transportation and its test method |
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| CN108896895B (en) * | 2018-03-30 | 2024-01-16 | 全球能源互联网研究院有限公司 | High-power thyristor electric heating combined aging test method and system |
| CN112039107A (en) * | 2020-08-28 | 2020-12-04 | 西安西电电力***有限公司 | Flexible direct current transmission debugging system and flexible direct current transmission debugging live method |
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| CN103457504A (en) * | 2013-09-18 | 2013-12-18 | 国家电网公司 | Circuit capable of reducing current conversion valve commutation failure |
| CN103487680A (en) * | 2013-09-11 | 2014-01-01 | 国家电网公司 | Converter valve commutation failure distinguishing method |
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2014
- 2014-12-04 CN CN201410738019.6A patent/CN105717383B/en active Active
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| JPH01202155A (en) * | 1988-02-04 | 1989-08-15 | Toshiba Corp | Thyristor valve |
| CN101719719A (en) * | 2009-12-14 | 2010-06-02 | 中国电力科学研究院 | Novel thyristor converter valve module |
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