CN101982789A - Novel method for testing low-voltage trigger of thyristor of direct-current converter valve - Google Patents
Novel method for testing low-voltage trigger of thyristor of direct-current converter valve Download PDFInfo
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Abstract
The invention discloses a novel method for testing low-voltage trigger of a thyristor of a direct-current converter valve, which is characterized in that a test circuit is set up by using a voltage regulator, a transformer, a current-limiting resistor and a test platform, wherein the test platform is designed according to the functions of thyristor electronics (TE); the voltage of the voltage regulator can be adjusted continuously as required, thereby changing the voltage applied on a thyristor-level test object; the test platform generates trigger coded pulses of TE according to synchronous control signals produced by the test circuit, so that the TE send trigger pulses to a gate electrode of the thyristor and trigger the thyristor; simultaneously, the test platform receives return pulses of TE for monitoring whether the operation of the thyristor and the functions of TE are normal. Through the test, the functions and operating statuses of TE can be verified, and the lowest energy-gaining voltage of TE reacquired in the process of normal operation can be detected. The test circuit provided in the test method is simple and easy to operate.
Description
Technical field
The present invention relates to the electric system devices field, relate in particular to a kind of Novel DC converter valve thyristor low-voltage and trigger test method.
Background technology
It is an important content of converter valve routine test that low-voltage triggers test, because converter valve is by a plurality of thyristor tandem workings, thereby the thyristor of each grade all needs conducting simultaneously, could guarantee whole converter valve operate as normal, thereby before the converter valve module is dispatched from the factory, all need to do low-voltage triggering test.
Traditional test method all is to utilize valve customary examination unit (VTE) to do experiment, the electric binding terminal of VTE and the anode of thyristor are linked to each other with negative electrode, and with the transmission optical fiber of VTE with receive optical fiber and link to each other with thyristor electronic equipment (TE), by operation VTE, make the needed voltage of test and the trigger pulse of its generation and finally finish this test.Though this experimental technique is simple, VTE is the import equipment that relies on foreign company, and domestic still do not have self-producedly, and in order not rely on this equipment, this invention has proposed a kind of novel test method.
Because the thyristor conducting needs two conditions, the one, anode and cathodic electricity pressure reduction are malleation, the 2nd, thyristor needs trigger pulse.This invention is finished this test on the basis of the test platform of independent research.This test platform has two functions, and the one, utilize voltage detecting circuit to finish the detection of malleation, the 2nd, send and trigger coded pulse.When test platform detected voltage difference between thyristor anode and the negative electrode and is malleation, test platform sent to TE and triggers coded pulse, and TE decodes after receiving this triggerings coded pulse, and the trigger pulse of generation thyristor, thereby finishes this test.Mention in the method for patent CN20071017109 direct current converter valve low voltage parameter operation test for the DC converter valve module when doing running test, utilize the high voltage-small current loop in the synthetic test device that test product valve voltage is provided.This experimental provision high voltage appearance loop voltage is higher, and the trigger pulse of test product is to carry out synchronous detection and produce triggering enable signal and the final thyristor that triggers by the compound experiment device.The low-voltage that this method can produce is limited, and owing to overtension, can not test converter valve single-stage thyristor.The designed test method of the present invention can remove to regulate the voltage that is applied on the thyristor by pressure regulator, can go regulation voltage level flexibly, and examination thyristor level test product and TE are had important effect.This method is simple and reliable, is easy to realize.
Summary of the invention
The objective of the invention is to, provide a kind of DC converter valve thyristor low-voltage of novelty to trigger the test method of testing, the hookup hookup that this experimental technique proposed is simple, easy and simple to handle, utilize pressure regulator and transformer to build the test loop, provide this test needed low-voltage, effective value is 380V, utilize the test platform and the thyristor electronic equipment (TE) of independent development to provide thyristor to trigger needed trigger pulse, and finally finish this test.A kind of Novel DC converter valve thyristor low-voltage of the present invention triggers test method, comprising:
(1) to trigger the hookup that test method comprised be that minimum trigger voltage according to thyristor is greater than 200V to DC converter valve thyristor low pressure, regulate the voltage of output by pressure regulator, the capacity situation that makes the low pressure of thyristor trigger the actual thyristor of experimental evidence is set, can be flexible regulate;
(2) described hookup is made of 220V AC power, pressure regulator, isolating transformer, current-limiting resistance and test platform; The input end of 220V AC power and pressure regulator is connected, the output terminal of pressure regulator is connected with isolating transformer, the output terminal of isolating transformer links to each other with current-limiting resistance, current-limiting resistance is connected with the thyristor level, thyristor electronic board TE is connected with the thyristor negative electrode, be connected with gate circuit transistor gate by optical fiber, test platform is connected by optical fiber with TE, and the anode of test platform and thyristor is connected with negative electrode;
(3) principle of work of described hookup is anode and the negative electrode that through pressure regulator and isolating transformer alternating voltage is connected to the thyristor test product by AC power, test platform detects the anode and the cathode voltage of thyristor, when the voltage difference that detects anode and negative electrode is malleation, test platform sends to TE and triggers coded pulse, decoding sent trigger pulse to thyristor after TE received and triggers coded pulse, thereby triggered thyristor;
(4) send trigger pulse and measure the voltage at thyristor two ends to thyristor electronic board TE by described test platform, can judge according to measured electric current and voltage peak value with by the pulse situation of thyristor electronic board TE repayment whether this test is passed through, because when the thyristor conducting, the voltage at thyristor two ends will be zero, electric current reaches maximal value, voltage peak is relevant with the trigger angle of thyristor, the peak value of electric current is organized relevant with the current-limiting resistance in the loop, when the voltage that measures thyristor two ends when being triggered greater than 100V, when the current peak of thyristor is about 3A, think that then this test passes through, otherwise think and do not pass through;
(5) by regulating pressure regulator, obtain thyristor and trigger needed minimum voltage,, just can remove to trigger thyristor because thyristor needs thyristor electronic board TE to get energy if will trigger greater than 200V;
Wherein, desired trigger pulse is that the dipulse by interval 10us constitutes, and pulse width also is 10us.
The invention has the beneficial effects as follows:
1, the designed hookup of invention is simple, has very strong operability.
2, invention has proposed novel test method, has broken away from the situation that the external instrument VTE of necessary dependence just can test.
Description of drawings
Shown in Fig. 1 is the low-voltage test circuit interconnect pattern.
Shown in Fig. 2 is voltage current waveform and triggering coded pulse.
Shown in Fig. 3 is test waveform after thyristor is triggered.
Embodiment
This technical scheme has designed thyristor low pressure and has triggered hookup, and its principle as shown in Figure 1.This Figure illustrates thyristor low pressure and trigger hookup, is to be made of 220V AC power, pressure regulator, isolating transformer, current-limiting resistance and test platform.Its principle of work is anode and the negative electrode that through pressure regulator and isolating transformer alternating voltage is connected to the thyristor test product by AC power.Test platform detects the anode and the cathode voltage of thyristor, when the voltage difference that detects anode and negative electrode is malleation, test platform sends to TE and triggers coded pulse, and decoding sent trigger pulse to thyristor after thyristor electronic board TE received and triggers coded pulse, thereby triggered thyristor.
Thyristor after receiving trigger pulse voltage current waveform and trigger coded pulse as shown in Figure 2, voltage waveform, current waveform, trigger pulse after this figure is triggered by thyristor are formed.Trigger pulse is a dipulse, and when not receiving triggering coding dipulse, thyristor does not trigger, the voltage at thyristor two ends shown in first cycle of voltage waveform among the figure, after receiving trigger pulse, the thyristor triggering and conducting, voltage reduces to zero, and peak value appears in electric current.Thereby finished this test.
Thyristor is seen accompanying drawing 3 by the experimental waveform that reality triggers.The B passage is the voltage waveform after thyristor is triggered, and A channel is a start pulse signal, and when receiving the dipulse of A channel, thyristor is triggered, and trigger voltage is about 150V.During test, the rotation pressure regulator makes pressure regulator be about 200V through the transformer output voltage, sends two, monopulse by the TE test platform to TE, after TE receives this pair monopulse, produces trigger pip, and triggers thyristor.
More than be in order to make those of ordinary skills understand the present invention; and the detailed description that the present invention is carried out; but can expect; in the scope that does not break away from claim of the present invention and contained, can also make other variation and modification, these variations and revising all in protection scope of the present invention.
Claims (2)
1. a Novel DC converter valve thyristor low-voltage triggers test method, it is characterized in that comprising:
(1) to trigger the hookup that test method comprised be that minimum trigger voltage according to thyristor is greater than 200V to DC converter valve thyristor low pressure, regulate the voltage of output by pressure regulator, the capacity situation that makes the low pressure of thyristor trigger the actual thyristor of experimental evidence is set, can be flexible regulate.
(2) described hookup is made of 220V AC power, pressure regulator, isolating transformer, current-limiting resistance and test platform; The input end of 220V AC power and pressure regulator is connected, the output terminal of pressure regulator is connected with isolating transformer, the output terminal of isolating transformer links to each other with current-limiting resistance, current-limiting resistance is connected with the thyristor level, thyristor electronic board TE is connected with the thyristor negative electrode, be connected with gate circuit transistor gate by optical fiber, test platform is connected by optical fiber with TE, and the anode of test platform and thyristor is connected with negative electrode;
(3) principle of work of described hookup is anode and the negative electrode that through pressure regulator and isolating transformer alternating voltage is connected to the thyristor test product by AC power, test platform detects the anode and the cathode voltage of thyristor, when the voltage difference that detects anode and negative electrode is malleation, test platform sends to TE and triggers coded pulse, decoding sent trigger pulse to thyristor after TE received and triggers coded pulse, thereby triggered thyristor;
(4) send trigger pulse and measure the voltage at thyristor two ends to thyristor electronic board TE by described test platform, can judge according to measured electric current and voltage peak value with by the pulse situation of thyristor electronic board TE repayment whether this test is passed through, because when the thyristor conducting, the voltage at thyristor two ends will be zero, electric current reaches maximal value, voltage peak is relevant with the trigger angle of thyristor, the peak value of electric current is organized relevant with the current-limiting resistance in the loop, when the voltage that measures thyristor two ends when being triggered greater than 100V, when the current peak of thyristor is about 3A, think that then this test passes through, otherwise think and do not pass through;
(5) by regulating pressure regulator, obtain thyristor and trigger needed minimum voltage,, just can remove to trigger thyristor because thyristor needs thyristor electronic board TE to get energy if will trigger greater than 200V.
2. the method for claim 1 is characterized in that desired trigger pulse is that dipulse by interval 10us constitutes, and pulse width also is 10us.
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| CN2010102883877A CN101982789A (en) | 2010-09-20 | 2010-09-20 | Novel method for testing low-voltage trigger of thyristor of direct-current converter valve |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063888A (en) * | 2012-12-13 | 2013-04-24 | 国网智能电网研究院 | Trigger time sequence system of Microsoft management console (MMC) valve overflow shutoff test and test method thereof |
| CN103149925A (en) * | 2013-03-01 | 2013-06-12 | 南京南瑞继保电气有限公司 | Dynamic simulation experimental platform of thyristor trigger control |
| CN103245868A (en) * | 2012-02-10 | 2013-08-14 | 武汉洪山电工科技有限公司 | Large-scale power rectifier cabinet silicon controlled rectifier continuity detection device |
| CN103713249A (en) * | 2013-12-27 | 2014-04-09 | 国家电网公司 | On-line identification method of operation test state parameters of converter valve |
| CN104280676B (en) * | 2014-10-27 | 2017-05-03 | 无锡同方微电子有限公司 | Detection circuit of power semiconductor device with bias power supply |
| CN107024647A (en) * | 2017-03-23 | 2017-08-08 | 国网江苏省电力公司电力科学研究院 | The TBS whole groups triggering test method of dry run operating mode |
| CN109239564A (en) * | 2017-07-10 | 2019-01-18 | 南京南瑞继保电气有限公司 | A kind of thyristor test macro based on the cooperation of software logic function |
| CN111208366A (en) * | 2020-01-09 | 2020-05-29 | 南京南瑞继保电气有限公司 | Method for judging electrification of high-voltage valve bank |
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| CN101806853A (en) * | 2010-05-07 | 2010-08-18 | 许继集团有限公司 | On-line test method and device for high-voltage thyristor |
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| CN101806853A (en) * | 2010-05-07 | 2010-08-18 | 许继集团有限公司 | On-line test method and device for high-voltage thyristor |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245868A (en) * | 2012-02-10 | 2013-08-14 | 武汉洪山电工科技有限公司 | Large-scale power rectifier cabinet silicon controlled rectifier continuity detection device |
| CN103063888A (en) * | 2012-12-13 | 2013-04-24 | 国网智能电网研究院 | Trigger time sequence system of Microsoft management console (MMC) valve overflow shutoff test and test method thereof |
| CN103063888B (en) * | 2012-12-13 | 2015-03-25 | 国网智能电网研究院 | Trigger time sequence system of Microsoft management console (MMC) valve overflow shutoff test and test method thereof |
| CN103149925A (en) * | 2013-03-01 | 2013-06-12 | 南京南瑞继保电气有限公司 | Dynamic simulation experimental platform of thyristor trigger control |
| CN103149925B (en) * | 2013-03-01 | 2015-11-18 | 南京南瑞继保电气有限公司 | A kind of dynamic simulation experimental platform of thyristor trigger control |
| CN103713249A (en) * | 2013-12-27 | 2014-04-09 | 国家电网公司 | On-line identification method of operation test state parameters of converter valve |
| CN104280676B (en) * | 2014-10-27 | 2017-05-03 | 无锡同方微电子有限公司 | Detection circuit of power semiconductor device with bias power supply |
| CN107024647A (en) * | 2017-03-23 | 2017-08-08 | 国网江苏省电力公司电力科学研究院 | The TBS whole groups triggering test method of dry run operating mode |
| CN107024647B (en) * | 2017-03-23 | 2019-08-09 | 国网江苏省电力有限公司电力科学研究院 | The TBS whole group of dry run operating condition triggers test method |
| CN109239564A (en) * | 2017-07-10 | 2019-01-18 | 南京南瑞继保电气有限公司 | A kind of thyristor test macro based on the cooperation of software logic function |
| CN109239564B (en) * | 2017-07-10 | 2021-02-26 | 南京南瑞继保电气有限公司 | Thyristor test system based on cooperation of software logic functions |
| CN111208366A (en) * | 2020-01-09 | 2020-05-29 | 南京南瑞继保电气有限公司 | Method for judging electrification of high-voltage valve bank |
| CN111208366B (en) * | 2020-01-09 | 2022-03-29 | 南京南瑞继保电气有限公司 | Method for judging electrification of high-voltage valve bank |
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