CN102486526B - A kind of minimum triggering angle - Google Patents
A kind of minimum triggering angle Download PDFInfo
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- CN102486526B CN102486526B CN201010576531.7A CN201010576531A CN102486526B CN 102486526 B CN102486526 B CN 102486526B CN 201010576531 A CN201010576531 A CN 201010576531A CN 102486526 B CN102486526 B CN 102486526B
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- 238000012360 testing method Methods 0.000 claims abstract description 81
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000010998 test method Methods 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
The invention provides a kind of minimum triggering angle.Minimum triggering angle provided by the invention, by selecting the trigger instants of auxiliary valve V1 to choose the turning-on voltage of test product valve Vt between resonant capacitance C charge period, continuously adjustabe, can select flexibly according to different engine request, solve the contradiction between low trigger voltage and high trial voltage, make it to be independent of each other, can meet different test product valves, method versatility is good.
Description
Technical field
The present invention relates to a kind of running test method of field of power electronics, specifically relate to a kind of minimum triggering angle.
Background technology
At present, high voltage dc transmission technology is fast-developing and be widely used in electric system.Compared with traditional UHV AC transmission technique, an important feature of high voltage dc transmission technology can carry out controlling on a large scale, continuously, fast to power delivery exactly, because direct-current transmission converter valve is open in a big way can be open-minded rapidly in angle.When under system voltage reduction, turn-on angle minimal condition, the turning-on voltage of converter valve is minimum, and it is unfavorable that this reliably opens converter valve, and converter valve be should give when designing and considered and need to be verified by corresponding research technique and improve.The minimum triggering angle running test proposed in converter valve type approval test standard IEC 60700 current in the world, namely verifies converter valve periodic triggers function under low pressure.The key point of test how in high-potting loop, to realize low test product turning-on voltage.
Minimum triggering angle running test is realized in current compounding testing circuit, its ultimate principle is the high voltage during employing two power supplys provide test product to block respectively and the big current during opening, its hookup can complete converter valve minimum triggering angle running test, but poor compatibility.
If applicant is at application number a kind of DC converter valve minimum triggering angle running test method disclosed in 200910243596.7, required minimum trigger voltage is realized by the strategy of auxiliary valve dividing potential drop, by increase oscillatory process meet that test product gets can, hookup can be good at the running test such as minimum trigger angle, minimum turn-off angle, but make to produce contradiction between low trigger voltage and high trial voltage, it is non-adjustable that test product valve opens the moment, compatible poor.
Summary of the invention
Minimum triggering angle provided by the invention, by selecting the trigger instants of auxiliary valve to choose the turning-on voltage of test product valve between electric capacity C charge period, solve the contradiction between low trigger voltage and high trial voltage, make test product valve open the moment and realize continuously adjustabe within the specific limits, possess good versatility.
Minimum triggering angle provided by the invention, its improvements are:
Described test method comprises the steps:
A kind of minimum triggering angle, it is characterized in that, described test method comprises the steps:
A, to capacitor charging, the moment of opening of auxiliary valve V1 between charge period, is selected to choose required test product valve Vt turning-on voltage;
B, triggering and conducting test product valve Vt;
C, inject DC current in test product valve Vt conduction period;
D, high voltage and big current alternately to be put on test product valve Vt.
In preferred technical scheme provided by the invention: in described steps A, described is that charge power supply S in high voltage-small current source (2) charges to resonant capacitance C to capacitor charging, selects the moment of opening of auxiliary valve V1 to choose required test product valve Vt turning-on voltage between resonant capacitance C charge period;
In described step B, after charging complete, resonant capacitance C forward voltage reaches the turning-on voltage needed for test product valve Vt, triggering and conducting test product valve Vt;
In described step C, the DC current of low-voltage, high-current direct supply (1) is introduced before high voltage-small current extinguishes, DC current is injected in test product valve Vt conduction period, in hundreds of before high voltage-small current source (2) current cut-off is delicate, the current over-zero of low-voltage, high-current DC source (1) and being isolated;
In described step D, the big current that the high voltage provide high voltage-small current source and low-voltage, high-current source provide alternately puts on test product valve Vt.
In the second optimal technical scheme provided by the invention: the high voltage during the low turning-on voltage of described test product valve Vt and test product valve Vt block is realized by high voltage low-current source (2).
Compared with prior art, the beneficial effect that the present invention reaches is:
Minimum triggering angle provided by the invention, by selecting the trigger instants of auxiliary valve V1 to choose the turning-on voltage of test product valve Vt between resonant capacitance C charge period, continuously adjustabe, can select flexibly according to different engine request, solve the contradiction between low trigger voltage and high trial voltage, make it to be independent of each other, can meet different test product valves, method versatility is good.
Accompanying drawing explanation
Fig. 1 is high voltage direct current transmission converter valve minimum triggering angle running test schematic diagram of device;
Fig. 2 is minimum triggering angle running test test product valve voltage, current waveform.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is high voltage direct current transmission converter valve minimum triggering angle running test schematic diagram of device, this device comprises low-voltage, high-current direct supply 1, high voltage-small current source 2, auxiliary valve V1 and test product valve Vt, and wherein low-voltage, high-current DC source 1, test product valve Vt and high voltage-small current source 2 are in parallel successively; Auxiliary valve V1 one end connects low-voltage, high-current DC source 1, test product valve Vt and high voltage-small current source 2, and the other end of auxiliary valve V1 connects the resonant inductance L in high voltage-small current source 2; High voltage low-current source 2 comprises charge power supply S, resonant capacitance C and resonance inductance L, and connect with resonant inductance L after charge power supply S and resonant capacitance C parallel connection, low-voltage, high-current DC source 1 provides the D.C. high-current of test product valve Vt conduction period.
To selecting between resonant capacitance C charge period, auxiliary valve V1's open the moment to charge power supply S in high voltage-small current source 2, then after charging complete, its forward voltage just reaches the turning-on voltage needed for test product valve Vt, solve the contradiction between low trigger voltage and high trial voltage, high voltage-small current source 2 provides the forward trigger voltage needed for test product valve Vt and test product valve Vt to close the Reverse recovery voltage of having no progeny, and test product valve Vt block during voltage jump and forward voltage escalating rate; Introduce the small area analysis in high voltage-small current source 2 simultaneously.Low-voltage, high-current DC source 1 injects DC current in test product valve Vt conduction period, thus the peak value of correct equivalent test product valve Vt On current, in hundreds of before the current cut-off of high voltage-small current source 2 is delicate, the current over-zero of low-voltage, high-current DC source 1 and being isolated, between resonant capacitance C charge period, select the moment of opening of auxiliary valve V1 to choose required test product valve Vt turning-on voltage, by coordinating with the activation schedule of auxiliary valve V1, big current in the high voltage provided by high voltage circuit and big current loop alternately puts on test product valve Vt, test waveform as shown in Figure 2.
Test waveform produces following process:
T0 moment resonant capacitance C voltage is negative, and test product valve Vt bears the reverse voltage of resonant capacitance C, and now controlling charge power supply S is that resonant capacitance C charges, and triggers auxiliary valve V1 simultaneously, and test product voltage follow resonant capacitance C voltage rises;
Trigger test product valve Vt after t1 moment test product voltage rise to required turning-on voltage, allow in test product valve Vt and flow into small area analysis;
The DC current in low-voltage, high-current direct supply 1 is introduced before t2 moment small area analysis extinguishes;
T3-t4 moment charge power supply S is that resonant capacitance C charges again;
T5 moment DC current opens auxiliary valve V1 before extinguishing, and again flows into small area analysis in test product valve Vt;
T6 moment small area analysis extinguishes, and again trigger auxiliary valve V1, test product valve Vt bears resonant capacitance C revert all voltage.
A kind of high voltage direct current converter minimum triggering angle running test method provided by the invention, by choosing the low turning-on voltage needed for test product valve trigger instants realization test flexibly, and the turning-on voltage continuously adjustabe of test product valve in the method, can meet the DC engineering of different electric pressure and the testing requirements of different converter valve, test method is flexible, applied widely.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; those of ordinary skill in the field are to be understood that: those skilled in the art still can modify to specific embodiments of the invention or equivalent replacement, but these amendments or change are all being applied among the claims awaited the reply.
Claims (1)
1. a minimum triggering angle, it is characterized in that, the device of described method is high voltage direct current transmission converter valve minimum triggering angle running test device, described device comprises low-voltage, high-current direct supply (1), high voltage-small current source (2), auxiliary valve V1 and test product valve Vt, wherein low-voltage, high-current direct supply (1), test product valve Vt and high voltage-small current source (2) parallel connection successively; Auxiliary valve V1 one end connects low-voltage, high-current direct supply (1), test product valve Vt and high voltage-small current source (2), and the other end of auxiliary valve V1 connects the resonant inductance L in high voltage-small current source (2); High voltage low-current source (2) comprises charge power supply S, resonant capacitance C and resonance inductance L, connect with resonant inductance L after charge power supply S and resonant capacitance C parallel connection, low-voltage, high-current direct supply (1) provides the D.C. high-current of test product valve Vt conduction period;
Described test method comprises the steps:
A, to capacitor charging, the moment of opening of auxiliary valve V1 between charge period, is selected to choose required test product valve Vt turning-on voltage;
B, triggering and conducting test product valve Vt;
C, inject DC current in test product valve Vt conduction period;
D, high voltage and big current are alternately put on test product valve Vt;
In described steps A, described is that charge power supply S in high voltage-small current source (2) charges to resonant capacitance C to capacitor charging, selects the moment of opening of auxiliary valve V1 to choose required test product valve Vt turning-on voltage between resonant capacitance C charge period;
In described step B, after charging complete, resonant capacitance C forward voltage reaches the turning-on voltage needed for test product valve Vt, triggering and conducting test product valve Vt;
In described step C, the DC current of low-voltage, high-current direct supply (1) is introduced before high voltage-small current extinguishes, DC current is injected in test product valve Vt conduction period, in hundreds of before high voltage-small current source (2) current cut-off is delicate, the current over-zero of low-voltage, high-current direct supply (1) and being isolated;
In described step D, the big current that the high voltage provide high voltage-small current source (2) and low-voltage, high-current direct supply (1) provide alternately puts on test product valve Vt;
High voltage during the low turning-on voltage of described test product valve Vt and test product valve Vt block is realized by high voltage low-current source (2);
Test waveform produces following process:
T0 moment resonant capacitance C voltage is negative, and test product valve Vt bears the reverse voltage of resonant capacitance C, and now controlling charge power supply S is that resonant capacitance C charges, and triggers auxiliary valve V1 simultaneously, and test product voltage follow resonant capacitance C voltage rises;
Trigger test product valve Vt after t1 moment test product voltage rise to required turning-on voltage, allow in test product valve Vt and flow into small area analysis;
The DC current in low-voltage, high-current direct supply (1) is introduced before t2 moment small area analysis extinguishes;
T3-t4 moment charge power supply S is that resonant capacitance C charges again;
T5 moment DC current opens auxiliary valve V1 before extinguishing, and again flows into small area analysis in test product valve Vt;
T6 moment small area analysis extinguishes, and again trigger auxiliary valve V1, test product valve Vt bears resonant capacitance C revert all voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010576531.7A CN102486526B (en) | 2010-12-01 | 2010-12-01 | A kind of minimum triggering angle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010576531.7A CN102486526B (en) | 2010-12-01 | 2010-12-01 | A kind of minimum triggering angle |
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| CN102486526A CN102486526A (en) | 2012-06-06 |
| CN102486526B true CN102486526B (en) | 2015-09-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106018992A (en) * | 2016-05-05 | 2016-10-12 | 许继电气股份有限公司 | Flexible direct-current transmission converter valve bridge arm damper short circuit current test device and method |
| CN113189424B (en) * | 2021-04-26 | 2022-09-06 | 中国南方电网有限责任公司超高压输电公司天生桥局 | Series resonance flexible direct current converter valve operation test topology and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN201130221Y (en) * | 2007-09-20 | 2008-10-08 | 中国电力科学研究院 | DC flow-exchanging valve low voltage parameter service test apparatus |
| CN201075124Y (en) * | 2007-09-21 | 2008-06-18 | 中国电力科学研究院 | Transient forward voltage tester for recuperation duration of DC converter valve |
| CN101187690B (en) * | 2007-11-28 | 2010-06-02 | 中国电力科学研究院 | DC converter valve restoration period transient forward voltage test method |
| CN101776732B (en) * | 2009-12-29 | 2013-03-27 | 中国电力科学研究院 | DC converter valve minimum triggering angle running test method |
| CN101776719B (en) * | 2009-12-29 | 2013-02-06 | 中国电力科学研究院 | DC converter valve minimum turn-off angle running test method |
| CN101776733B (en) * | 2009-12-29 | 2013-03-20 | 中国电力科学研究院 | Service test method of minimum trigger angle of DC converter valve with asymmetric voltage |
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Effective date of registration: 20130216 Address after: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Applicant after: China Electric Power Research Institute Applicant after: State Grid Corporation of China Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Applicant before: China Electric Power Research Institute |
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