CN101776732B - DC converter valve minimum triggering angle running test method - Google Patents
DC converter valve minimum triggering angle running test method Download PDFInfo
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Abstract
The invention provides a DC converter valve minimum triggering angle running test method, belonging to the fields of power electronics and electrical power system simulated experiment. The method realizes the needed minimum triggering voltage by the partial voltage strategy of an auxiliary valve, can meet the sample taking energy by increasing primary oscillating process, and can fully test and verify the triggering reliability of the valve and the accuracy of the design of a valve taking energy unit. DC heavy current is provided by a six-pulse rectifier bridge, and the wave form is basically the same as that of the actual working condition.
Description
Technical field
The present invention relates to power electronics and power system simulation experiment field, be specifically related to a kind of testing direct current converter valve method, relate in particular to a kind of DC converter valve minimum triggering angle running test method.
Background technology
Direct current transportation is at long-distance and large-capacity power transmission; Asynchronous Interconnection; unrivaled advantage has been compared in the aspects such as subsea cable electric power transfer with ac transmission; DC converter valve is as core, the key equipment of direct current transportation; guarantee its safe and reliable stable operation; the system that is not only is to the requirement of device, the especially requirement of unit protection self.And running test is the important means of check valve performance.Owing to the increase of single thyristor voltage current capacity, adopt synthetic test method that DC converter valve is carried out running test and obtain international relevant criterion approval at present.Its basic thought is that the required high pressure of test, large strength of current provide by high voltage-small current loop and low-voltage, high-current loop respectively, and alternately puts on the test product valve.
The minimum trigger angle test because of its singularity in testing requirements, has determined that its test method is different from other running test project of converter valve as a pilot project of DC converter valve operating test.Present minimum trigger angle test method is difficult to take into account at test product scope, control difficulty, equivalence comprehensively.
Minimum trigger angle test examination test product valve reduces at system's alternating voltage, the operational reliability when Trigger Angle is the system minimum value.Under this operating mode, because Trigger Angle is little, so turning-on voltage is low, it is unfavorable that this thyristor valve to series connection is opened; Low valve terminal voltage peak-to-peak value is unfavorable to relying on the valve terminal voltage to rise to get the gate circuit transistor gate cell operation that can power.DC converter valve should be able to guarantee under this operating mode reliably open-minded when design, and the gate pole unit can fully be got can be to guarantee normal operation.For the correctness of checking design and the qualification of manufacturing need to be carried out minimum triggering angle running test to converter valve, and the present invention can well reach this examination purpose.
Chinese patent application 200710177109.2 discloses a kind of method of direct current converter valve low voltage parameter operation test, be connected to the high voltage-small current resource loop, in a test period T, trigger action sequential flow process operates as follows: T0～T1 stage, control 6 pulse bridge Trigger Angle A by testing requirements; In the T1 moment, triggering and conducting VT and V1 valve are introduced large electric current half-wave DC; In the T2 moment, from the half-wave current zero passage in low-voltage, high-current source, V1 begins to close; T2～T3 moment, the V1 valve breakdown, the little electric current of VT valve arm continues to pass through test product; The T3 moment, VT valve zero-crossing switching, the high voltage-small current resource loop provides required test product valve voltage.The equivalence of described direct current converter valve low voltage parameter test method the recovery step voltage of turning-on voltage and shutoff, can finish minimum AC voltage test, the test of transient state under-voltage and intermittent continuous current current testing.
Content described in applying for a patent from above-mentioned institute, its test unit are specially for low voltage parameter operation test institute development and Design, can be good at finishing the running test of the low voltage parameters such as minimum trigger angle, minimum turn-off angle, intermittent continuous current current testing.But for the running test of high voltage parameter such as maximum continuous service load test, maximum transient running test, the apparatus and method described in this patented claim can not be suitable for.
The test unit high voltage source of present patent application adopts the charging oscillation circuit, can satisfy simultaneously the requirement of high voltage parameter operation test and low voltage parameter operation test, the test method that proposes can realize minimum triggering angle running test, need not to be specially the low voltage parameter operation test stand-alone development test battery devices such as minimum triggering angle running test, save cost, economical and practical.
Summary of the invention
The invention provides a kind of test method of DC converter valve minimum triggering angle running test, realize required minimum trigger voltage by the strategy of auxiliary valve dividing potential drop, by increase oscillatory process satisfy test product get can, can fully verify the reliable trigger of valve and valve get can Unit Design correctness.D.C. high-current is provided by Six-pulse Bridge, and waveform and actual condition are basic identical.
Technical scheme of the present invention is a kind of method of DC converter valve minimum triggering angle running test, it is characterized in that:
(1) device that adopts of the method is the DC converter valve minimum triggering angle running test device, comprise the low-voltage, high-current DC source, high voltage-small current source, auxiliary valve V1 and test product valve VT, wherein the low-voltage, high-current DC source is in parallel with test product valve VT, and VT provides D.C. high-current for test product valve; The high voltage-small current source is in parallel with test product valve VT by auxiliary valve V1, for test product valve provides high voltage, described low-voltage, high-current DC source comprises 6 stream pulsation rectifiers, the loop in described high voltage-small current source comprises charging device, capacitor C and reactor L, connects with reactor L after described charging device and the capacitor C parallel connection;
(2) step of the method comprises:
The mode of employing auxiliary valve V1 dividing potential drop is obtained the turning-on voltage of test product valve VT, and utilizing mode of oscillation to get for test product can again;
The high voltage-small current source provides the required forward trigger voltage of test product valve VT and test product valve VT to close the reverse recovery voltage of having no progeny, and voltage jump and forward voltage escalating rate during the test product valve VT blocking-up, can accurately examine test product valve VT to get the correctness of energy Unit Design;
By before D.C. high-current extinguishes, introducing the little electric current of the little current source of high voltage, come the current changing rate before equivalent test product valve VT turn-offs simultaneously;
DC current is injected in test product valve VT conduction period in the low-voltage, high-current source, thereby the peak value of correct equivalent test product valve VT On current, reappear the test product valve VT loss of conduction period, in the current cut-off first few hundred microsecond of high voltage-small current source, the current over-zero of low-voltage, high-current direct supply and being isolated is guaranteed the safe and reliable shutoff of auxiliary valve V1 simultaneously.
Wherein, the strategy of the dividing potential drop by auxiliary valve V1 is realized required minimum trigger voltage; By increase oscillatory process satisfy test product valve VT get can, namely in a test period, twice of the voltage of test product valve rises to positive voltage from negative voltage, thus can fully verify the reliable trigger of valve and valve get can Unit Design correctness.
DC converter valve minimum triggering angle test method provided by the invention is equivalent accurately turning-on voltage and valve terminal voltage variation range, the test equivalence is higher.
The invention has the beneficial effects as follows:
1, the test method that proposes satisfies the requirement of correlation test standard fully, and required test parameters is easy to adjust, and the control difficulty is little.
2, exactly equivalence the turning-on voltage of test product, get can the loop the examination equivalence good, therefore the equivalence to test product is high.
3, the test product scope that the test method that proposes is suitable for is wide.
Description of drawings
In order to make content of the present invention by clearer understanding, and be convenient to the description of embodiment, it is as follows that the below provides description of drawings related to the present invention:
Fig. 1 shows according to DC converter valve minimum triggering angle running test method theory diagram of the present invention;
Fig. 2 shows according to minimum trigger angle trial voltage current waveform of the present invention.
Embodiment
The below is a preferred embodiment of the present invention, below in conjunction with this accompanying drawing the technical scheme that the present invention realizes is described further.
The theory diagram of direct current converter valve low voltage parameter test unit such as Fig. 1.Mainly comprise the 6 back-to-back low-voltage, high-current sources of pulsing, high voltage-small current loop, auxiliary valve V1 and test product valve VT.
The high voltage-small current source provides the required forward trigger voltage of test product and test product to close the reverse recovery voltage of having no progeny, and voltage jump and forward voltage escalating rate during the test product valve blocking-up, can accurately examine test product valve to get the correctness of energy loop design, by regulating the little electric current of the little current source of high voltage, regulate the current changing rate before test product valve turn-offs simultaneously; The low-voltage, high-current source is in test product valve conduction period injection DC current, peak value with correct equivalent test product valve On current, reappear the test product valve loss of conduction period, at high voltage-small current source electric current in the first few hundred microsecond, the low-voltage, high-current current over-zero, with the isolation of low-voltage, high-current loop, guaranteed simultaneously the safe and reliable shutoff of auxiliary valve, test waveform such as Fig. 2.
The below further specifies Fig. 2 waveform generation process:
In the t0 moment, test product valve is in conduction period, the D.C. high-current of flowing through;
Before the t1 moment, D.C. high-current extinguished, open auxiliary valve V1 and introduce high voltage-small current;
T2 is the high voltage-small current zero passage constantly, triggers simultaneously auxiliary valve V1, and test product valve bears revert all voltage;
T3 constantly charging device is the capacitor C charging, triggers simultaneously auxiliary valve V1;
T4 constantly test product valve voltage follow capacitor C voltage rises to the forward peak value;
T5 constantly triggers test product valve and auxiliary valve V1 simultaneously, introduces little electric current;
T6 is little current over-zero constantly, and test product valve and auxiliary valve bear reverse voltage jointly;
T7 constantly charging device charges to capacitor C, and test product valve voltage rises;
T8 time trigger test product valve and auxiliary valve are introduced little electric current;
T9 introduces D.C. high-current before the little current over-zero constantly;
Be engraved in test product valve during t10 and flow through during the D.C. high-current, charging device charges to capacitor C, makes its voltage return to forward, for the next test period prepares.
The high voltage-small current source provides the required forward trigger voltage of test product and test product to close the reverse recovery voltage of having no progeny, and voltage jump and forward voltage escalating rate during the test product valve blocking-up, can accurately examine test product valve to get the correctness of energy loop design, by regulating the little electric current of the little current source of high voltage, regulate the current changing rate before test product valve turn-offs simultaneously; The low-voltage, high-current source is in test product valve conduction period injection DC current, peak value with correct equivalent test product valve On current, reappear the test product valve loss of conduction period, at high voltage-small current source electric current in the first few hundred microsecond, the low-voltage, high-current current over-zero, with the isolation of low-voltage, high-current loop, guaranteed simultaneously the safe and reliable shutoff of auxiliary valve, test waveform such as Fig. 2.
The above by special embodiment content description the present invention, but those skilled in the art also can recognize the multiple possibility of modification and optional embodiment, for example, by combination and/or change the feature of single embodiment.Therefore, be understandable that these modification and optional embodiment will be considered as included among the present invention, scope of the present invention is enclosed invention claims and coordinator restriction thereof only.
Claims (2)
1. the method for a DC converter valve minimum triggering angle running test is characterized in that
(1) device that adopts of the method is the DC converter valve minimum triggering angle running test device, this DC converter valve minimum triggering angle running test device comprises the low-voltage, high-current DC source, the high voltage-small current source, auxiliary valve Vl and test product valve VT, wherein the low-voltage, high-current DC source is in parallel with test product valve VT, and VT provides D.C. high-current for test product valve; Test product valve VT is described DC converter valve; The high voltage-small current source is in parallel with test product valve VT by auxiliary valve V1, VT provides high voltage for test product valve, described low-voltage, high-current DC source comprises 6 pulsation rectifiers, the loop in described high voltage-small current source comprises charging device, capacitor C and reactor L, connects with reactor L after described charging device and the capacitor C parallel connection;
(2) step of the method comprises:
The turning-on voltage that the mode of employing auxiliary valve V1 dividing potential drop is obtained test product valve VT utilizes mode of oscillation to get energy for test product valve VT again;
The high voltage-small current source provides the required forward trigger voltage of test product valve VT and test product valve VT to close the reverse recovery voltage of having no progeny, and voltage jump and forward voltage escalating rate during the test product valve VT blocking-up, can accurately examine test product valve VT to get the correctness of energy Unit Design:
By before D.C. high-current extinguishes, introducing the little electric current of the little current source of high voltage, come the current changing rate before equivalent test product valve VT turn-offs simultaneously;
Low-voltage, high-current source DC source is injected D.C. high-current in test product valve VT conduction period, thereby the peak value of correct equivalent test product valve VT On current, reappear the test product valve VT loss of conduction period, in the current cut-off first few hundred microsecond in high voltage-small current source, the current over-zero of low-voltage, high-current DC source and being isolated is guaranteed the safe and reliable shutoff of auxiliary valve Vl simultaneously.
2. the method for DC converter valve minimum triggering angle running test as claimed in claim 1, it is characterized in that: the mode by auxiliary valve V1 dividing potential drop realizes required minimum trigger voltage; By increase oscillatory process satisfy getting of test product valve VT can, namely in a test period, twice of the voltage of test product valve VT rises to positive voltage from negative voltage, thus can fully verify the reliable trigger of test product valve VT and test product valve VT get can Unit Design correctness.
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| CN 200910243596 CN101776732B (en) | 2009-12-29 | 2009-12-29 | DC converter valve minimum triggering angle running test method |
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| CN 200910243596 CN101776732B (en) | 2009-12-29 | 2009-12-29 | DC converter valve minimum triggering angle running test method |
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| CN101776732B true CN101776732B (en) | 2013-03-27 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102486499A (en) * | 2010-12-01 | 2012-06-06 | 中国电力科学研究院 | High-voltage direct current power transmission conversion valve minimum turn-off angle operation test method |
| CN102486526B (en) * | 2010-12-01 | 2015-09-23 | 中国电力科学研究院 | A kind of minimum triggering angle |
| KR101326327B1 (en) * | 2012-05-22 | 2013-11-11 | 명지대학교 산학협력단 | Apparatus for testing thryristor valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0562471A1 (en) * | 1992-03-25 | 1993-09-29 | ABBPATENT GmbH | Method for triggering the converter valves of two or more parallel resonant circuit converters powered by a common DC source with one induction oven at a time and arrangement for the execution of the method |
| DE10245293A1 (en) * | 2002-09-27 | 2004-04-08 | Siemens Ag | Valve triggering method for triggering a turn-off power converter valve uses a number of cycles in series applying two or more |
| CN101149421A (en) * | 2007-11-09 | 2008-03-26 | 中国电力科学研究院 | Direct current converter valve low voltage parameter operation test method |
| CN201075122Y (en) * | 2007-08-30 | 2008-06-18 | 中国电力科学研究院 | Off-cycle triggering tester of high voltage DC transmission converter valve |
| CN201107384Y (en) * | 2007-11-14 | 2008-08-27 | 中国电力科学研究院 | High voltage dc transmission stream exchanging valve non-periodic triggering tester based on charging in parallel |
-
2009
- 2009-12-29 CN CN 200910243596 patent/CN101776732B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0562471A1 (en) * | 1992-03-25 | 1993-09-29 | ABBPATENT GmbH | Method for triggering the converter valves of two or more parallel resonant circuit converters powered by a common DC source with one induction oven at a time and arrangement for the execution of the method |
| DE10245293A1 (en) * | 2002-09-27 | 2004-04-08 | Siemens Ag | Valve triggering method for triggering a turn-off power converter valve uses a number of cycles in series applying two or more |
| CN201075122Y (en) * | 2007-08-30 | 2008-06-18 | 中国电力科学研究院 | Off-cycle triggering tester of high voltage DC transmission converter valve |
| CN101149421A (en) * | 2007-11-09 | 2008-03-26 | 中国电力科学研究院 | Direct current converter valve low voltage parameter operation test method |
| CN201107384Y (en) * | 2007-11-14 | 2008-08-27 | 中国电力科学研究院 | High voltage dc transmission stream exchanging valve non-periodic triggering tester based on charging in parallel |
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