CN102486519A - Impulse voltage test device for direct current converter valve - Google Patents
Impulse voltage test device for direct current converter valve Download PDFInfo
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- CN102486519A CN102486519A CN201010576617XA CN201010576617A CN102486519A CN 102486519 A CN102486519 A CN 102486519A CN 201010576617X A CN201010576617X A CN 201010576617XA CN 201010576617 A CN201010576617 A CN 201010576617A CN 102486519 A CN102486519 A CN 102486519A
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Abstract
The invention provides an impulse voltage test device for a direct current converter valve. The device comprises an impulse device D, a power frequency test transformer T1, a test sample valve V1, a protection resistor R3 and a switch, wherein the switch comprises a first switch S1 and a second switch S2; the impulse device D, the protection resistor R3 and the test sample valve V1 are connected in parallel with one another sequentially; the first switch S1 is connected between the impulse device D and the protection resistor R3, and then is connected with the negative electrode of the test sample valve V1; the second switch S2 is connected between the protection resistor R3 and the test sample valve V1, and then is connected with the positive electrode of the test sample valve V1; and two ends of the power frequency test transformer T1 are connected with the ground and the positive electrode of the test sample valve V1 respectively. The impulse voltage test device for the direct current converter valve meets test requirements for switching impulse, thunder impulse and steep wave impulse, is novel and simple, has multiple functions, and can be suitable for test demands of the direct current converter valves in different types of voltage engineering.
Description
Technical field
The present invention relates to a kind of DC converter valve action test set of field of power electronics, specifically relate to a kind of DC converter valve impulse voltage test device.
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
The objective of the invention is to verify can withstand shocks a kind of DC converter valve impulse voltage test device of the relevant voltage characteristic of superpotential of DC converter valve; Test unit is simple; Complete function, and taken into full account the safeguard measure under the failure condition, install to such an extent that reliability is high.
For realizing the object of the invention, a kind of DC converter valve impulse voltage test device provided by the invention comprises percussion mechanism D, power frequency testing transformer T1 and test product valve V1, and its improvements are: said device comprises protective resistance R3 and switch; Said switch comprises first switch S 1 and second switch S2; Said percussion mechanism D, protective resistance R3 and test product valve V1 be parallel connection successively; Said first switch S 1 is connected with test product valve V1 negative electrode after being connected between percussion mechanism D and the protective resistance R3; Said second switch S2 connects in test product valve V1 anode after being connected between protective resistance R3 and the test product valve V1; Said power frequency testing transformer T1 two ends are connected with test product valve V1 anode with ground respectively.
In the preferred DC converter valve impulse voltage test device technique scheme provided by the invention: said percussion mechanism D and the equal effective grounding of protective resistance R3.
Compared with prior art, the beneficial effect that reaches of the present invention is:
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 R3 is arranged, in the hookup in failure condition limit loop current for test product valve V1.
2, test unit is simple, complete function, and taken into full account the safeguard measure under the failure condition, the reliability of device is high.
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 in test loop.
5, utilize the power frequency testing transformer T1 in the ac voltage withstanding device that test product valve V1 is carried out complementary energy, reduced insulating requirements, save 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 oscillogram of Fig. 2 test product valve;
The lightning impulse voltage oscillogram of Fig. 3 test product valve;
The steep wave surge voltage oscillogram of Fig. 4 test product valve.
Embodiment
Do further to specify below in conjunction with the accompanying drawing specific embodiments of the invention.
Fig. 1 is a DC converter valve impulse voltage test schematic diagram of device provided by the invention, and this device comprises percussion mechanism 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; Percussion mechanism D, protective resistance R3, second switch S2 and test product valve V1 be parallel connection successively; Percussion mechanism D and the equal effective grounding of protective resistance R3; First switch S 1 is connected with test product valve V1 negative electrode after being connected between percussion mechanism D and the protective resistance R3; Second switch S2 connects in test product valve V1 anode after being connected between protective resistance R3 and the test product valve V1; Power frequency testing transformer T1 two ends are connected with test product valve V1 anode with ground respectively.Percussion mechanism 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.
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; By percussion mechanism D test product valve V1 is applied impact, this kind impact applies under the mode, can evade percussion mechanism 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 voltage that do not withstand shocks, power-frequency voltage is applied on the percussion mechanism D when preventing to charge simultaneously; Regulate wave front resistance R2, the wave rear resistance R 1 of percussion mechanism 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 test, three kinds of trial voltage waveforms are like Fig. 2, shown in 3 and 4.
Be the voltage waveform of switching impulse test test product valve V1 among Fig. 2, the voltage of test product valve V1 reaches peak value 550KV constantly at 300us under switching impulse test; Fig. 3 is the voltage waveform of lightning impulse test test product valve V1, and the voltage of test product valve V1 reaches peak value 780KV constantly at 300us under lightning impulse test; Fig. 4 is the voltage waveform of steep wave impulse test test product valve V1, and the voltage of test product valve V1 reaches peak value 800KV constantly at 50us under the steep wave impulse test.
Test unit provided by the invention is simple; Novel succinct; The enforcement that is easy to test, 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; The present invention provides the protective resistance in the test unit to take into full account the safeguard measure under the failure condition, and the reliability of device is high.Utilize the power frequency testing transformer in the ac voltage withstanding device that test product valve 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 (2)
1. DC converter valve impulse voltage test device, said device comprises percussion mechanism D, power frequency testing transformer T1 and test product valve V1, it is characterized in that: said device comprises protective resistance R3 and switch; Said switch comprises first switch S 1 and second switch S2; Said percussion mechanism D, protective resistance R3 and test product valve V1 be parallel connection successively; Said first switch S 1 is connected with test product valve V1 negative electrode after being connected between percussion mechanism D and the protective resistance R3; Said second switch S2 connects in test product valve V1 anode after being connected between protective resistance R3 and the test product valve V1; Said power frequency testing transformer T1 two ends are connected with test product valve V1 anode with ground respectively.
2. a kind of DC converter valve impulse voltage test device as claimed in claim 1 is characterized in that: said percussion mechanism D and the equal effective grounding of protective resistance R3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010576617.XA CN102486519B (en) | 2010-12-01 | 2010-12-01 | Impulse voltage test device for direct current converter valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010576617.XA CN102486519B (en) | 2010-12-01 | 2010-12-01 | Impulse voltage test device for direct current converter valve |
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| Publication Number | Publication Date |
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| CN102486519A true CN102486519A (en) | 2012-06-06 |
| CN102486519B CN102486519B (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010576617.XA Active CN102486519B (en) | 2010-12-01 | 2010-12-01 | Impulse voltage test device for direct current converter valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998602A (en) * | 2012-11-23 | 2013-03-27 | 云南电力试验研究院（集团）有限公司电力研究院 | Method of inspecting influence of impulse voltage on power frequency device in power frequency and impulse synthetic and combined testing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN101339221B (en) * | 2008-08-12 | 2010-06-23 | 中国西电电气股份有限公司 | Test device for reactor volt-second characteristic of high voltage direct current transmission valve |
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2010
- 2010-12-01 CN CN201010576617.XA patent/CN102486519B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101339221B (en) * | 2008-08-12 | 2010-06-23 | 中国西电电气股份有限公司 | Test device for reactor volt-second characteristic of high voltage direct current transmission valve |
| 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 |
Non-Patent Citations (2)
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| 周会高: "特高压直流输电换流阀运行试验的预期参数", 《高电压技术》 * |
| 崔东等: "±500 kV HVDC换流阀冲击试验技术", 《电力设备》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998602A (en) * | 2012-11-23 | 2013-03-27 | 云南电力试验研究院（集团）有限公司电力研究院 | Method of inspecting influence of impulse voltage on power frequency device in power frequency and impulse synthetic and combined testing |
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| CN102486519B (en) | 2014-07-23 |
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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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