CN201903609U - Impulse voltage compound high-voltage direct current transmission converter valve fault current tester - Google Patents
Impulse voltage compound high-voltage direct current transmission converter valve fault current tester Download PDFInfo
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- CN201903609U CN201903609U CN201020645472XU CN201020645472U CN201903609U CN 201903609 U CN201903609 U CN 201903609U CN 201020645472X U CN201020645472X U CN 201020645472XU CN 201020645472 U CN201020645472 U CN 201020645472U CN 201903609 U CN201903609 U CN 201903609U
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Abstract
The utility model provides an impulse voltage compound high-voltage direct current transmission converter valve fault current tester, which comprises a direct current source, an auxiliary valve (V), a specimen valve (Vt), a fault current source and an impulse voltage generator, wherein the impulse voltage generator and the fault current source are connected in parallel at both ends of the specimen valve (Vt); the specimen valve (Vt) is connected in series with the auxiliary valve (V) to form a bridge arm of a 6 pulse bridge rectifier (B6) in the direct current source; and the negative terminal of the specimen valve (Vt) is grounded. Negative and positive symmetrical voltage and impulse voltage are adopted by the impulse voltage compound high-voltage direct current transmission converter valve fault current tester to be compounded so as to form negative and positive asymmetrical forward high voltage and reverse high voltage, and moreover, the impulse voltage application time can be randomly selected, a value of amplitude is continuously adjustable according to the demand, a test method is flexible and safe and the test requirement of single-wave fault current and three-wave fault current can be fully satisfied.
Description
Technical field
The utility model relates to a kind of high voltage direct current transmission converter valve fault current test unit, specifically relates to the compound high voltage direct current transmission converter valve fault current test unit of surge voltage.
Background technology
Increase along with capacity during the power semiconductor, high voltage dc transmission technology based on the high-pressure series semiconductor device art is developed rapidly, in electric system, be used widely its core component---the reliability of high-power high voltage series thyristor valve becomes the key of security of system.And the fault current test is to be related to high voltage tandem thyristor valve design and manufacture level, improves the important tests means of its reliability.Its fundamental purpose is that the design that the checking valve bears maximum current, voltage and temperature stress effect that short-circuit current causes is correct.The at present international compound experiment method that generally adopts promptly is respectively forward and reverse high pressure after converter valve provides heating current, fault current and fault by many covers power-supply system.The fault current test comprises following two pilot projects:
A) single ripple of follow-up locking time fault current test---suppress single ripple time fault current of a maximum amplitude, begin from maximum temperature, and then locking take place oppositely and forward voltage, comprise the superpotential that any removal of load causes; (with reference to test waveform shown in Figure 2)
B) many ripples of no follow-up locking time fault current test---under the condition identical with the Dan Boci test, before circuit breaker trip, many ripples time fault current that exists, but no longer apply forward voltage.(with reference to test waveform shown in Figure 3)
Present hookup high voltage appearance source generally is made of L, C oscillatory circuit, the positive and negative symmetry of high voltage waveform that it provided.So for time fault current test of single ripple, general synthetic test loop extinguishes forward and reverse high pressure amplitude equal and opposite in direction that the back provides for test product at fault current.And in actual condition, test product valve is behind the experience fault current, and converter valve is born reverse voltage earlier, and voltage rises until reaching the forward peak value then, and the peak value of back voltage is less than peak forward voltage, and test product valve joint temperature reduces gradually in this process.The reverse too high voltages that general synthetic test loop provides is very unfavorable to just standing the higher converter valve of fault current joint temperature, and the possibility of damaging test product is arranged.In addition, the peak forward voltage that converter valve is born in the actual condition is 5ms after its reverse voltage zero passage constantly, for general synthetic test loop, requires to revise circuit related parameter is arranged for reaching this, not only increases investment but also make troubles to test operation.
The utility model content
In order to solve defective of the prior art, the purpose of this utility model is to propose the compound high voltage direct current transmission converter valve fault current test unit of surge voltage, this device adopts the voltage of positive and negative symmetry mutually compound to form positive and negative asymmetric forward and reverse high pressure with surge voltage, and surge voltage applies can be chosen arbitrarily constantly, amplitude is adjustable continuously as required, test method is flexible, safety, can fully satisfy the testing requirements of single ripple time fault current and three ripples time fault current.
For achieving the above object, the utility model adopts following proposal:
The high voltage direct current transmission converter valve fault current test unit that surge voltage is compound, described device comprises DC current source, auxiliary valve V, test product valve Vt, fault current source and impulse voltage generator; Its improvements are: described impulse voltage generator, fault current source are connected in parallel on test product valve Vt two ends; Described test product valve Vt series connection auxiliary valve V forms the brachium pontis of 6 fluctuation bridge rectifier B6 in the DC current source; Described test product valve Vt negativing ending grounding.
A kind of optimized technical scheme that the utility model provides is: described fault current source comprises charging device, discharging capacitor C1, C2 and C3, discharge reactor L1, isolation valve V1, V2 and V3, isolation switch S1, S2 and S3; Described charging device comprises AC power T3, fairing T2 and resistance R; Connect with resistance R behind the wherein said AC power fairing in parallel; Described resistance R is connected respectively with isolation switch S1, S2, S3; Described isolation valve V1, V2 and V3, discharging capacitor C1, C2 and C3, isolation switch S1, S2 and S3 connect successively with discharge reactor L; Described resistance R and isolation switch S1, S2 and S3 series connection; The output of described AC power T3 connects resistance R; Described resistance R and isolation switch S1, S2 and S3 are connected in series; Described isolation switch S1, S2 are connected with isolation valve V1, V2, V3 respectively with S3.
Second kind of optimized technical scheme that the utility model provides is: described impulse voltage generator comprises power supply T1, capacitor C 4, resistance R 1 and ignition pill crack Q1 and Q2; Described power supply T1, capacitor C 4 and resistance R 1 are in parallel successively; Described power supply T1 is connected with ignition pill crack Q1 with ground respectively with capacitor C 4 two ends; Described resistance R 1 two ends are connected with Q2 with ignition pill crack Q1 with ground respectively; Described ignition pill crack Q2 connects with discharge reactor L1.
The third optimized technical scheme that the utility model provides is: the heating current of described auxiliary valve V in test product extinguishes back isolated DC current source.
The 4th kind of optimized technical scheme that the utility model provides is: described fault current source is heated to certain joint Wen Houxiang test product valve Vt at test product valve Vt fault current is provided, also reverse voltage after test product valve Vt provides fault current and part forward voltage in the test of single ripple time fault current.
The 5th kind of optimized technical scheme that the utility model provides is: described impulse voltage generator provides surge voltage to test product valve Vt, in time fault current test of single ripple, this voltage is forward impact voltage, the forward voltage of the mutually compound composition test product valve of forward voltage that provides with the fault current source; In time fault current test of three ripples, this surge voltage is oppositely, and is after-applied on test product valve at the second failure electric current.
Compared with prior art, the beneficial effects of the utility model are:
1, the hookup of the test unit that provides of the utility model is simple relatively, build simple, low cost;
2, the test unit that provides of the utility model has saved the high voltage source in the generic failure current testing, is substituted by surge generator, has solved the problem of the forward and reverse voltage symmetry of test product valve, makes test safer;
3, in the test unit that provides of the utility model because surge voltage applies constantly, voltage magnitude is adjustable continuously, can be that test product voltage accurately reaches the required voltage peak value in the set moment, test method is flexible, applicable to the converter valve of different DC engineerings.
Description of drawings
Fig. 1 is the mutually compound high voltage direct current transmission converter valve fault current test unit of surge voltage;
Fig. 2 is single ripple time fault current test waveform figure of follow-up locking;
Fig. 3 is many ripples time fault current test waveform figure of no follow-up locking;
Wherein: Vt-test product valve, B6-6 fluctuation bridge rectifier, V-auxiliary valve, C1, C2, C3-discharging capacitor, the L1-reactor that discharges, V1, V2, V3-isolation valve, T1-power supply, C4-electric capacity, R1-resistance, Q1, Q2-ball crack, R-resistance, S1, S2, S3 are isolation switch.
Embodiment
Below in conjunction with accompanying drawing the compound high voltage direct current converter valve fault current test unit of surge voltage of the present utility model is described in further detail.
Be the compound high voltage direct current transmission converter valve fault current test unit of surge voltage as shown in Figure 1, this device comprises DC current source, auxiliary valve V, test product valve Vt, fault current source and impulse voltage generator; Impulse voltage generator, fault current source are connected in parallel on test product valve Vt two ends; Test product valve Vt series connection auxiliary valve V forms the brachium pontis of 6 fluctuation bridge rectifier B6 in the DC current source; Test product valve Vt negativing ending grounding.
DC current source comprises strong current transformer T, isolating switch, disconnector, current limiting reactor, reactor Lh and L2 and 6 fluctuation bridge rectifier B6; Strong current transformer T, isolating switch, disconnector and current limiting reactor are connected successively; Reactor Lh and L2 that the output termination of 6 fluctuation bridge rectifier B6 is connected successively.
The fault current source comprises charging device, discharging capacitor C1, C2 and C3, discharge reactor L1, isolation valve V1, V2 and V3, isolation switch S1, S2 and S3; Charging device comprises AC power T3, fairing T2 and resistance R; Connect with resistance R behind the wherein said AC power fairing in parallel; Resistance R is connected respectively with isolation switch S1, S2, S3 one end; Isolation valve V1, V2 and V3, discharging capacitor C1, C2 and C3, isolation switch S1, S2 and S3 connect successively with discharge reactor L; Resistance R and isolation switch S1, S2 and S3 series connection; The output of AC power T3 connects resistance R; Resistance R and isolation switch S1, S2 and S3 are connected in series; Isolation switch S1, S2 are connected with isolation valve V1, V2, V3 respectively with S3.
Impulse voltage generator comprises power supply T1, capacitor C 4, resistance R 1 and ignition pill crack Q1 and Q2; Described power supply T1, capacitor C 4 and resistance R 1 are in parallel successively; Power supply T1 is connected with ignition pill crack Q1 with ground respectively with capacitor C 4 two ends; Resistance R 1 two ends are connected with Q2 with ignition pill crack Q1 with ground respectively; Ignition pill crack Q2 connects with discharge reactor L1.
DC current source provides heating current before the fault current for test product valve at first in test, makes its joint temperature reach a base value; After the heating current of auxiliary valve in test product valve extinguishes DC current source is isolated; The fault current source is heated to certain joint Wen Houxiang test product valve at test product valve fault current is provided, also reverse voltage after test product provides fault current and part forward voltage in the test of single ripple time fault current; Impulse voltage generator provides surge voltage to test product valve, and in the test of single ripple time fault current, this voltage is forward impact voltage, the forward voltage of the mutually compound composition test product valve of forward voltage that provides with the fault current source, as shown in Figure 2; In time fault current test of three ripples, this surge voltage is oppositely, and is after-applied on test product valve, as shown in Figure 3 at the second failure electric current.
The high voltage direct current transmission converter valve fault current test unit that the surge voltage that the utility model provides is compound, adopt the voltage of positive and negative symmetry mutually compound to form positive and negative asymmetric forward and reverse high pressure with surge voltage, and surge voltage applies can be chosen arbitrarily constantly, amplitude is adjustable continuously as required, test method is flexible, safety, can fully satisfy the testing requirements of single ripple time fault current and three ripples time fault current.
Should be noted that at last: be not intended to limit in conjunction with the foregoing description explanation the technical solution of the utility model.Those of ordinary skill in the field are to be understood that: those skilled in the art can make amendment or are equal to replacement embodiment of the present utility model, but these modifications or change are all among the claim protection domain that application is awaited the reply.
Claims (6)
1. the compound high voltage direct current transmission converter valve fault current test unit of surge voltage, described device comprises DC current source, auxiliary valve V, test product valve Vt, fault current source and impulse voltage generator; It is characterized in that: described impulse voltage generator, fault current source are connected in parallel on test product valve Vt two ends; Described test product valve Vt series connection auxiliary valve V forms the brachium pontis of 6 fluctuation bridge rectifier B6 in the DC current source; Described test product valve Vt negativing ending grounding.
2. the high voltage direct current transmission converter valve fault current test unit that surge voltage according to claim 1 is compound, it is characterized in that: described fault current source comprises charging device, discharging capacitor C1, C2 and C3, discharge reactor L1, isolation valve V1, V2 and V3, isolation switch S1, S2 and S3; Described charging device comprises AC power T3, fairing T2 and resistance R; Connect with resistance R behind the described AC power T3 fairing T2 in parallel; Described resistance R is connected respectively with isolation switch S1, S2, S3; Described isolation valve V1, V2 and V3, discharging capacitor C1, C2 and C3, isolation switch S1, S2 and S3 connect successively with discharge reactor L; Described resistance R and isolation switch S1, S2 and S3 series connection; The output of described AC power T3 connects resistance R; Described resistance R and isolation switch S1, S2 and S3 are connected in series; Described isolation switch S1, S2 are connected with isolation valve V1, V2, V3 respectively with S3.
3. the high voltage direct current transmission converter valve fault current test unit that surge voltage according to claim 1 is compound, it is characterized in that: described impulse voltage generator comprises power supply T1, capacitor C 4, resistance R 1 and ignition pill crack Q1 and Q2; Described power supply T1, capacitor C 4 and resistance R 1 are in parallel successively; Described power supply T1 is connected with ignition pill crack Q1 with ground respectively with capacitor C 4 two ends; Described resistance R 1 two ends are connected with Q2 with ignition pill crack Q1 with ground respectively; Described ignition pill crack Q2 connects with discharge reactor L1.
4. the high voltage direct current transmission converter valve fault current test unit that surge voltage according to claim 1 is compound is characterized in that: the heating current of described auxiliary valve V in test product extinguishes back isolated DC current source.
5. the high voltage direct current transmission converter valve fault current test unit that surge voltage according to claim 1 is compound, it is characterized in that: described fault current source is heated to certain joint Wen Houxiang test product valve Vt at test product valve Vt fault current is provided, also reverse voltage after test product valve Vt provides fault current and part forward voltage in the test of single ripple time fault current.
6. the high voltage direct current transmission converter valve fault current test unit that surge voltage according to claim 1 is compound, it is characterized in that: described impulse voltage generator provides surge voltage to test product valve Vt, in time fault current test of single ripple, this voltage is forward impact voltage, the forward voltage of the mutually compound composition test product valve of forward voltage that provides with the fault current source; In time fault current test of three ripples, this surge voltage is oppositely, and is after-applied on test product valve at the second failure electric current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020645472XU CN201903609U (en) | 2010-12-01 | 2010-12-01 | Impulse voltage compound high-voltage direct current transmission converter valve fault current tester |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201020645472XU CN201903609U (en) | 2010-12-01 | 2010-12-01 | Impulse voltage compound high-voltage direct current transmission converter valve fault current tester |
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| CN201903609U true CN201903609U (en) | 2011-07-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354973A (en) * | 2011-09-29 | 2012-02-15 | 中国电力科学研究院 | Power supply system for impulse voltage generator in high-altitude area |
| WO2012071773A1 (en) * | 2010-12-01 | 2012-06-07 | 中国电力科学研究院 | Impulse voltage combined fault current test method for high voltage direct current transmission converter valve |
| CN103076471A (en) * | 2012-11-29 | 2013-05-01 | 许继集团有限公司 | Large current source for running test of direct-current transmission converter valve and compensation method thereof |
| CN104007377A (en) * | 2014-04-29 | 2014-08-27 | 许继电气股份有限公司 | Explosion-proof property testing circuit and method of damping capacitor for direct current transmission converter valve |
| CN105021984A (en) * | 2015-07-15 | 2015-11-04 | 南京南瑞继保电气有限公司 | Direct current converter valve fault current test device and test method thereof |
-
2010
- 2010-12-01 CN CN201020645472XU patent/CN201903609U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012071773A1 (en) * | 2010-12-01 | 2012-06-07 | 中国电力科学研究院 | Impulse voltage combined fault current test method for high voltage direct current transmission converter valve |
| CN102354973A (en) * | 2011-09-29 | 2012-02-15 | 中国电力科学研究院 | Power supply system for impulse voltage generator in high-altitude area |
| CN102354973B (en) * | 2011-09-29 | 2014-03-12 | 中国电力科学研究院 | Power supply system for impulse voltage generator in high-altitude area |
| CN103076471A (en) * | 2012-11-29 | 2013-05-01 | 许继集团有限公司 | Large current source for running test of direct-current transmission converter valve and compensation method thereof |
| CN103076471B (en) * | 2012-11-29 | 2015-11-11 | 许继电气股份有限公司 | A kind of direct-current transmission converter valve running test big current source and compensation method thereof |
| CN104007377A (en) * | 2014-04-29 | 2014-08-27 | 许继电气股份有限公司 | Explosion-proof property testing circuit and method of damping capacitor for direct current transmission converter valve |
| CN105021984A (en) * | 2015-07-15 | 2015-11-04 | 南京南瑞继保电气有限公司 | Direct current converter valve fault current test device and test method thereof |
| CN105021984B (en) * | 2015-07-15 | 2018-01-19 | 南京南瑞继保电气有限公司 | DC converter valve fault current experimental rig and its test method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140321 Owner name: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140321 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100192 HAIDIAN, BEIJING TO: 100031 XICHENG, BEIJING |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140321 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: China Electric Power Research Institute Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Patentee before: China Electric Power Research Institute |
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| CX01 | Expiry of patent term |
Granted publication date: 20110720 |
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| CX01 | Expiry of patent term |