CN102486511A - Direct current converter valve impulse voltage test method - Google Patents
Direct current converter valve impulse voltage test method Download PDFInfo
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- CN102486511A CN102486511A CN2010105765035A CN201010576503A CN102486511A CN 102486511 A CN102486511 A CN 102486511A CN 2010105765035 A CN2010105765035 A CN 2010105765035A CN 201010576503 A CN201010576503 A CN 201010576503A CN 102486511 A CN102486511 A CN 102486511A
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Abstract
The invention provides a direct current converter valve impulse voltage test method which comprises the following steps: turning on a switch, and charging a specimen valve with alternating current; after charging is finished, turning off the switch, and applying impulse with an impulse voltage generator; adjusting wave head resistance and wave tail resistance of the impulse voltage generator respectively, and enabling the specimen valve to generate a peak value. A test loop in direct current converter valve impulse voltage test the method provided by the invention has a simple structure and comprehensive functions, manufacture cost is saved, and the test method can be adapted to test requirements of direct current converter valves of different application schemes of a back-to-back direct current project, a routine high voltage direct current transmission project, an extreme-high voltage direct current transmission project, an ultra-high voltage direct current transmission project and the like.
Description
Technical field
The present invention relates to power electronics, electric system impact test method, specifically relate to a kind of DC converter valve impulse voltage test method.
Background technology
The direct current transportation technology is because its technical and economy obtains over nearly 30 years widely applying, and modal application is to exchange networking and long distance powedr transmission back-to-back.The equipment of DC engineering most critical is current conversion station, and DC converter valve is the core component of current conversion station.For guaranteeing the reliability of DC engineering, DC converter valve supplier must carry out type approval test to DC converter valve, comprises Insulation Test and running test.Impulse test is the part of DC converter valve Insulation Test, and it comprises switching impulse test, lightning impulse test and steep front-of-wave test.Test objective is the checking DC converter valve relevant voltage characteristic of superpotential that can withstand shocks; DC converter valve can bear the superpotential of regulation; Each internal overvoltage protection loop all is effective; Interference-free influence of DC converter valve electronic unit and function are correct, and DC converter valve can trigger under the excessive voltage condition of regulation and avoid damaging.
Summary of the invention
It is simple to the purpose of this invention is to provide a kind of test unit; Novel succinct; Be easy to test the method for enforcement, and test method can adapt to the test demand of different application scheme DC converter valves such as back-to-back DC engineering, conventional high voltage direct current transmission project, extra-high voltage direct-current transmission engineering and super high voltage direct current electricity transmission engineering.
For realizing the object of the invention, DC converter valve impulse voltage test method provided by the invention comprises the steps:
A, open switch, be test product valve AC charging;
After B, charging were accomplished, Closing Switch applied impact by impulse voltage generator;
C, regulate impulse voltage generator wave front resistance and wave rear resistance respectively, make test product valve produce peak value.
In the DC converter valve impulse voltage test method for optimizing provided by the invention, in the said A step, the said switch of opening is for opening first switch S 1 and second switch S2; Said AC charging is that to make power frequency testing transformer T1 be test product valve V1 AC charging;
Among the said step B, after charging was accomplished, closed first switch S 1 and second switch S2 applied impact by impulse voltage generator D to test product valve V1;
Among the said step C, regulate wave front resistance R2 and the wave rear resistance R 1 of impulse voltage generator D, make test product valve V1 two ends produce peak value.
In a kind of DC converter valve surge voltage optimization test method provided by the invention, the peak value that test product valve V1 two ends produce in the said C step is equivalent to the surge voltage of the operation ripple protection level of systematic study decision.
Compared with prior art, DC converter valve impulse voltage test method provided by the invention has following excellent effect:
1, utilizes first switch S 1 and second switch S2 to realize the switching of test before and after test circuit, and adopt power frequency testing transformer T1 to carry out AC charging, protective resistance is arranged, in the hookup in failure condition limit loop current for test product valve V1.
2, the device that uses of test method is simple, complete function and taken into full account the safeguard measure the failure condition under, the reliability height of test unit.
3, satisfy the application scheme demand of different DC converter valve impulse tests such as back-to-back DC engineering, super high voltage direct current electricity transmission engineering and extra-high voltage direct-current transmission engineering, need not complicated sequential when making an experiment and cooperate, it is big to apply the range of adjustment of impacting the moment.
4, satisfy switching impulse, lightning impulse and the requirement of steep wave impulse test, novel succinct, the complete function of test unit.
5, utilize the testing transformer in the ac voltage withstanding device that test product valve is carried out complementary energy, reduced insulating requirements, saved manufacturing cost first switch S 1 and second switch S2.
Description of drawings
Fig. 1 DC converter valve impulse voltage test schematic diagram of device;
The operating impulse voltage waveform of Fig. 2 test product valve;
The lightning impulse voltage waveform of Fig. 3 test product valve;
The steep wave surge voltage waveform of Fig. 4 test product valve.
Embodiment
DC converter valve impulse voltage test schematic diagram of device provided by the invention is as shown in Figure 1, and this device comprises impulse voltage generator D, protective resistance R3, switch, power frequency testing transformer T1 and test product valve V1.Switch comprises first switch S 1 and second switch S2; Surge generator D, protective resistance R3, test product valve V1 be parallel connection successively; After being connected between surge generator D and the protective resistance R3, first switch S 1 is connected with test product valve V1 negative electrode again; Second switch S2 is connected between protective resistance R3 and the test product valve V1 and with test product valve V1 anode and is connected; Power frequency testing transformer T1 two ends are connected with test product valve V1 one end with ground respectively; Surge generator D comprises batching sphere crack 1, body capacitor C 1, wave rear resistance R 1 and wave front resistance R2; Batching sphere crack 1 and wave front resistance R2 series connection; Body capacitor C 1 and wave rear resistance R 1 are connected in parallel on the two ends in batching sphere crack 1; Surge generator D and the equal effective grounding of protective resistance R3.
Before the DC converter valve impulse voltage test; Open first switch S 1 and second switch S2; Use power frequency testing transformer T1 to be test product valve V1 AC charging; Protective resistance R3 can form the complementary energy loop with test product valve V1 under this kind charging modes, thereby can when faults such as test product valve V1 generation conducting, the restriction loop current protect power frequency testing transformer T1 again; After charging is accomplished; Closed first switch S 1 and second switch S2; V1 applies impact to test product valve, and this kind impact applies under the mode, can evade impulse voltage generator D and in charging the infringement that when fault such as putting, superposes test product valve V1 is caused with power-frequency voltage constantly take place; Also can protect the power frequency testing transformer T1 voltage that do not withstand shocks, power-frequency voltage is applied on the impulse voltage generator D when preventing to charge simultaneously; Regulate wave front resistance R2 and the wave rear resistance R 1 of impulse voltage generator D respectively, make test product valve V1 two ends produce the surge voltage that peak value is equivalent to the operation ripple protection level of systematic study decision.Satisfy switching impulse, lightning impulse and steep wave impulse voltage test.The switching impulse test voltage waveform is as shown in Figure 2, reaches peak value 550KV at 250us moment test product valve V1; The lightning impulse test voltage waveform is as shown in Figure 3, reaches peak value 780KV at 1.2us moment test product valve V1; Steep wave impulse test voltage waveform is as shown in Figure 4, reaches peak value 800KV at 0.5us moment test product valve V1.
The test unit of test method provided by the invention is simple; Novel succinct; The enforcement that is easy to test can adapt to the test demand of different application scheme DC converter valves such as back-to-back DC engineering, conventional high voltage direct current transmission project, extra-high voltage direct-current transmission engineering and super high voltage direct current electricity transmission engineering.Test unit has taken into full account the safeguard measure under the failure condition, and device reliability is high.Utilize the power frequency testing transformer T1 in the ac voltage withstanding device that test product valve V1 is carried out complementary energy simultaneously, reduced insulating requirements, saved manufacturing cost first switch S 1 and second switch S2.
Should be noted that at last: combine the foregoing description technical scheme of the present invention to be described but not its restriction.Under the those of ordinary skill in field be to be understood that: those skilled in the art can specific embodiments of the invention make amendment or are equal to replacement, but these modifications or change are all among the claim protection domain that application is awaited the reply.
Claims (3)
1. a DC converter valve impulse voltage test method is characterized in that said method comprises the steps:
A, open switch, be test product valve AC charging;
After B, charging were accomplished, Closing Switch applied impact by impulse voltage generator;
C, regulate impulse voltage generator wave front resistance and wave rear resistance respectively, make test product valve produce peak value.
2. according to a kind of DC converter valve impulse voltage test method of claim 1, it is characterized in that:
In the said A step, the said switch of opening is for opening first switch S 1 and second switch S2, and said AC charging is that to make power frequency testing transformer T1 be test product valve V1 AC charging;
Among the said step B, after charging was accomplished, closed first switch S 1 and second switch S2 applied impact by impulse voltage generator D to test product valve V1;
Among the said step C, regulate wave front resistance R2 and the wave rear resistance R 1 of impulse voltage generator D, make test product valve V1 two ends produce peak value.
3. according to a kind of DC converter valve impulse voltage test method of claim 2, it is characterized in that: the peak value that test product valve V1 two ends produce in the said C step is equivalent to the surge voltage of the operation ripple protection level of systematic study decision.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201010576503.5A CN102486511B (en) | 2010-12-01 | 2010-12-01 | A kind of direct current converter valve impulse voltage test method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010576503.5A CN102486511B (en) | 2010-12-01 | 2010-12-01 | A kind of direct current converter valve impulse voltage test method |
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| CN102486511A true CN102486511A (en) | 2012-06-06 |
| CN102486511B CN102486511B (en) | 2015-08-05 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237758A (en) * | 2014-10-13 | 2014-12-24 | 国家电网公司 | Method for testing impulse withstand voltages of ultrahigh-voltage converter transformers on basis of scale models |
| CN105223484A (en) * | 2015-10-27 | 2016-01-06 | 西安交通大学 | A kind of dry reactor higher-order of oscillation impulse voltage endurance test method and system thereof |
| CN105223532A (en) * | 2015-10-27 | 2016-01-06 | 西安交通大学 | A kind of method for diagnosing faults of dry reactor higher-order of oscillation impulse voltage withstand test |
| CN106771992A (en) * | 2016-11-09 | 2017-05-31 | 南方电网科学研究院有限责任公司 | Method and device for measuring voltage distribution of power unit of flexible direct current converter valve |
| CN108957264A (en) * | 2018-08-27 | 2018-12-07 | 云南电网有限责任公司电力科学研究院 | GIS pilot system and method under VFTO and Lightning Over-voltage effect |
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| CN101187690A (en) * | 2007-11-28 | 2008-05-28 | 中国电力科学研究院 | DC converter valve restoration period transient forward voltage test method |
| CN201352251Y (en) * | 2009-01-21 | 2009-11-25 | 许继集团有限公司 | Impact test device of high voltage direct current (HVDC) power transmission converter valve |
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2010
- 2010-12-01 CN CN201010576503.5A patent/CN102486511B/en active Active
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| CN101187690A (en) * | 2007-11-28 | 2008-05-28 | 中国电力科学研究院 | DC converter valve restoration period transient forward voltage test method |
| CN201352251Y (en) * | 2009-01-21 | 2009-11-25 | 许继集团有限公司 | Impact test device of high voltage direct current (HVDC) power transmission converter valve |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237758A (en) * | 2014-10-13 | 2014-12-24 | 国家电网公司 | Method for testing impulse withstand voltages of ultrahigh-voltage converter transformers on basis of scale models |
| CN104237758B (en) * | 2014-10-13 | 2016-12-07 | 国家电网公司 | A kind of UHV impulse voltage endurance test method based on scale model |
| CN105223484A (en) * | 2015-10-27 | 2016-01-06 | 西安交通大学 | A kind of dry reactor higher-order of oscillation impulse voltage endurance test method and system thereof |
| CN105223532A (en) * | 2015-10-27 | 2016-01-06 | 西安交通大学 | A kind of method for diagnosing faults of dry reactor higher-order of oscillation impulse voltage withstand test |
| CN105223532B (en) * | 2015-10-27 | 2018-06-29 | 西安交通大学 | A kind of method for diagnosing faults of dry reactor higher-order of oscillation impulse withstand voltage experiment |
| CN106771992A (en) * | 2016-11-09 | 2017-05-31 | 南方电网科学研究院有限责任公司 | Method and device for measuring voltage distribution of power unit of flexible direct current converter valve |
| CN108957264A (en) * | 2018-08-27 | 2018-12-07 | 云南电网有限责任公司电力科学研究院 | GIS pilot system and method under VFTO and Lightning Over-voltage effect |
| CN108957264B (en) * | 2018-08-27 | 2023-10-27 | 云南电网有限责任公司电力科学研究院 | GIS test system and method under action of VFTO and lightning overvoltage |
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| CN102486511B (en) | 2015-08-05 |
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