CN202066942U - Fault current operation test device for flexible direct current power transmission MMC (modular multi-level converter) valve - Google Patents
Fault current operation test device for flexible direct current power transmission MMC (modular multi-level converter) valve Download PDFInfo
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- CN202066942U CN202066942U CN2011200361660U CN201120036166U CN202066942U CN 202066942 U CN202066942 U CN 202066942U CN 2011200361660 U CN2011200361660 U CN 2011200361660U CN 201120036166 U CN201120036166 U CN 201120036166U CN 202066942 U CN202066942 U CN 202066942U
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- 238000012360 testing method Methods 0.000 title claims abstract description 59
- 230000005540 biological transmission Effects 0.000 title claims abstract description 16
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 20
- 238000001802 infusion Methods 0.000 claims description 44
- 239000003990 capacitor Substances 0.000 claims description 38
- 238000013016 damping Methods 0.000 claims description 8
- 230000001052 transient effect Effects 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/4835—Converters with outputs that each can have more than two voltages levels comprising two or more cells, each including a switchable capacitor, the capacitors having a nominal charge voltage which corresponds to a given fraction of the input voltage, and the capacitors being selectively connected in series to determine the instantaneous output voltage
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- Engineering & Computer Science (AREA)
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Abstract
The utility model relates to a fault current operation test device for a flexible direct current power transmission MMC (modular multi-level converter) valve, which comprises an attenuation current input loop, a sine current input loop, a high voltage input loop and a test valve. An output end of the test valve is respectively connected with a control valve V1 of the attenuation current input loop, a bidirectional control valve V2 of the sine current input loop and a bidirectional control valve V3 of the high voltage input loop and a test valve. Low voltage ends of the attenuation current input loop, the sine current input loop and the high voltage input loop are connected with a low voltage end of the test valve respectively to be grounded. By means of the fault current operation test device, the test valve is subject to equal transient current, transient heat and loss intensity as actual fault operating conditions, so that testing for the test valve under fault operating conditions can be realized. Additionally, the fault current operation test device is convenient and simple in realizing of various testing ways.
Description
Technical field
The utility model relates to the operating test device in a kind of flexible DC power transmission field, specifically relates to a kind of fault current operating test device of flexible DC power transmission MMC valve.
Background technology
Along with flexible DC power transmission (VSC-HVDC) technology beginning in electric system used, the reliability of its core component---high-power high voltage insulated gate bipolar transistor (IGBT) valve becomes the key of security of system.Because the VSC-HVDC device generally has voltage height, big, the capacious characteristics of electric current, be difficult in to make up in the experimental enviroment and test with the identical full live road of actual operating mode, therefore how in experimental enviroment, to make up the hookup of equivalence, carry out the test suitable and become the key of dealing with problems with actual operating mode intensity.
Based on the VSC-HVDC of modularization multi-level converter (MMC), be to realize utilizing the IGBT valve to carry out a kind of mode of direct current transportation.Its core component is called the MMC valve, and in normal operating condition, submodule can be exported two kinds of level: 0 level and condenser voltage by the cooperation of two IGBT up and down.
In the actual motions based on turn-off device valve high power electronic equipment such as flexible direct current; can take place because the system failure; reasons such as DC side earth fault cause the diode excess current of managing IGBT in the submodule down; because the uncontrollability of diode; can't self turn-off excess current; simultaneously because system protection is longer actuation time; diode must bear the excess current between age at failure; but the excess current during owing to fault can be considerably beyond the tolerance value of device itself; therefore must be by moving with the antiparallel protection thyristor of following pipe IGBT in the submodule and sharing most excess current, to reach the purpose of protection device itself and device.Its design for the maximum current under the fault current operating condition, voltage and temperature stress effect of purpose test of MMC higher pressure subsidiary module failure electric current running test is correct.Must be in the test by the big electric current and the reverse high voltage of peripheral circuit under test product injection actual condition.
The utility model content
The purpose of this utility model provides a kind of MMC stream valve fault current test unit, this test unit puts on exponential damping electric current, sinusoidal current stack on the tested converter valve MMC valve, make heat and the loss intensity of tested converter valve tolerance, realize test examination tested valve accident operating condition with the suitable transient current of physical fault operating mode, transient state.
The utility model adopts following technical proposals to realize the purpose of this utility model:
A kind of fault current operating test device of flexible DC power transmission MMC valve, its improvements are that described device comprises decay current infusion circuit, sinusoidal current infusion circuit, high voltage infusion circuit and test product valve; The output terminal of test product valve respectively with described decay current infusion circuit in operation valve V1, the bidirectional control valve V2 in the sinusoidal current infusion circuit be connected with bidirectional control valve V3 in the high voltage infusion circuit; Ground connection after the low pressure end of the low pressure end of the low pressure end of described decay current infusion circuit, sinusoidal current infusion circuit and high voltage infusion circuit links to each other with the low pressure end of test product valve respectively.
A kind of optimized technical scheme that the utility model provides is: described decay current infusion circuit comprises power supply E1, charge switch Kc1, direct current capacitors C1, load reactance device L1, operation valve V1, integrated gate commutated valve transistor I GCT, damping resistance R and diode D; Described power supply E1 is in parallel with direct current capacitors C1; Described charge switch Kc1 is connected between described power supply E1 and the direct current capacitors C1; Described integrated gate commutated valve transistor I GCT inverse parallel diode D forms controlled shutoff device G; Described controlled shutoff device G connects with damping resistance R, forms the G-R branch road; Described load reactance device L1 and operation valve V1 series connection; Connect with load reactance device L1 and operation valve V1 after described G-R branch road and the direct current capacitors C1 parallel connection.
Second optimized technical scheme that the utility model provides is: described sinusoidal current infusion circuit comprises power supply E2, charge switch Kc2, direct current capacitors C2, load reactance device L2 and bidirectional control valve V2; Described power supply E2 is in parallel with direct current capacitors C2; Described charge switch Kc2 is connected between described power supply E2 and the direct current capacitors C2; Described load reactance device L2 and operation valve V2 series connection; Described direct current capacitors C2 connects with described load reactance device L2 and bidirectional control valve V2.
The 3rd optimized technical scheme that the utility model provides is: described high voltage infusion circuit comprises power supply E3, charge switch Kc3, direct current capacitors C3, load reactance device L3 and bidirectional control valve V3; Described power supply E3 is in parallel with direct current capacitors C3; Described charge switch Kc3 is connected between described power supply E3 and the direct current capacitors C3; Described load reactance device L3 and operation valve V3 series connection; Described direct current capacitors C3 connects with described load reactance device L3 and bidirectional control valve V3.
Compared with prior art, the beneficial effect that reaches of the utility model is:
1, the test unit that provides of the utility model cooperates by the triggering of a series of auxiliary valves in the hookup, exponential damping electric current and sinusoidal current stack are put on tested converter valve MMC valve, make heat and the loss intensity of tested converter valve tolerance with the suitable transient current of physical fault operating mode, transient state, realization is to the test examination of tested valve accident operating condition, and the test unit that the utility model provides is convenient, simple for the realization of different tests mode;
2, the fault current operating test device of the flexible DC power transmission MMC valve that provides of the utility model satisfies the requirement of MMC valve fault current test fully, can provide with the suitable Transient Thermal intensity of actual operating mode, transient state fault current intensity, transient state high-voltage strength, accessory circuit loss intensity, current changing rate (di/dt) intensity, voltage change ratio (dv/dt) intensity.
Description of drawings
Fig. 1 is a flexible DC power transmission MMC valve fault current test unit schematic diagram;
Fig. 2 is flexible DC power transmission MMC valve fault current test current, voltage waveform.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is a flexible DC power transmission MMC valve fault current test unit schematic diagram, and this device is made up of decay current infusion circuit, sinusoidal current infusion circuit, high voltage infusion circuit and test product valve.
The output terminal of test product valve respectively with the decay current infusion circuit in operation valve V1, in bidirectional control valve V2 and the high voltage infusion circuit in the sinusoidal current infusion circuit bidirectional control valve V3 be connected; Ground connection after the low pressure end of the low pressure end of the low pressure end of decay current infusion circuit, sinusoidal current infusion circuit and high voltage infusion circuit links to each other with the low pressure end of test product valve respectively.
The decay current infusion circuit comprises power supply E1, charge switch Kc1, direct current capacitors C1, load reactance device L1, operation valve V1, integrated gate commutated valve transistor I GCT, damping resistance R and diode D; Power supply E1 is connected with direct current capacitors C1 through charge switch Kc1; Integrated gate commutated valve transistor I GCT inverse parallel diode D forms controlled shutoff device G; Controlled shutoff device G connects with damping resistance R, forms the G-R branch road; The G-R branch road with direct current capacitors C1 parallel connection after overload reactor L1 is connected the output terminal with test product valve with operation valve V1.
The sinusoidal current infusion circuit comprises power supply E2, charge switch Kc2, direct current capacitors C2, load reactance device L2 and bidirectional control valve V2; Power supply E2 is connected with direct current capacitors C2 through charge switch Kc2; Direct current capacitors C2 process load reactance device L2 is connected the output terminal with test product valve with bidirectional control valve V2.
The high voltage infusion circuit comprises power supply E3, charge switch Kc3, direct current capacitors C3, load reactance device L3 and bidirectional control valve V3; Power supply E3 is connected with direct current capacitors C3 through charge switch Kc3; Direct current capacitors C3 process load reactance device L3 is connected the output terminal with test product valve with bidirectional control valve V3.
Test product valve comprises the submodule SM that is connected in series
1～SM
nSubmodule SM
1Comprise capacitor C, two insulated gate bipolar transistor IGBTs 1 and IGBT2, two diode D11 and D12 and protect thyristor V; IGBT1 inverse parallel diode D11 forms controlled shutoff device G1; IGBT2 inverse parallel diode D12 forms controlled shutoff device G2; Capacitor C, controlled shutoff device G1 and controlled shutoff device G2 are composed in series closed loop configuration successively; Controlled shutoff device G2 and operation valve V inverse parallel; Submodule SM
1～SM
nStructure is identical.
Power supply E1, E2 and E3 are respectively direct current capacitors C1, C2 and C3 charging; Trigger operation valve V1, the resonance generation resonance current by direct current capacitors C1 and load reactance device L1 forms the decay current infusion circuit by load reactance device L1, operation valve V1, test product valve, resistance R and diode D, produces decay current; Trigger operation valve V2 simultaneously, direct current capacitors C2, load reactance device L2, operation valve V2 and test product valve form the sinusoidal current infusion circuit, produce sinusoidal current, trigger the cooperation of logical sequence by operation valve V1 and operation valve V2, it is identical with the time that first sinusoidal current pulse reaches peak value to make decay current reach time of peak value, and decay current continues to put on the test product valve with the sinusoidal current stack; When needs apply reverse voltage, controlled shutoff device G is turn-offed in control, the decay current infusion circuit is withdrawed from from circuit, after treating the sinusoidal current zero passage, the pulse of locking operation valve V2, the sinusoidal current infusion circuit withdraws from from circuit, triggers operation valve V3 again with high voltage infusion circuit input, reverse voltage is put on the test product valve, until off-test.
Fig. 2 is flexible DC power transmission MMC valve fault current test current, voltage waveform; Wherein, what present fluctuation status is current waveform, and electric current reaches maximum when 0.2s, is 15KA; Voltage waveform is following line, and voltage keeps the 0KV state when lasting till 0.33s always, and at 0.33s constantly, applying a reverse voltage is about 10KV.
By sequential control to decay current infusion circuit, sinusoidal current infusion circuit and these three rssi circuits that can work independently of high voltage infusion circuit, make the tolerance of test specimen valve with the same abominable proof strength of actual condition, realize the purpose of fault current test.
Should be noted that at last: only illustrate that in conjunction with the foregoing description the technical solution of the utility model is not intended to limit.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 (4)
1. the fault current operating test device of a flexible DC power transmission MMC valve is characterized in that, described device comprises decay current infusion circuit, sinusoidal current infusion circuit, high voltage infusion circuit and test product valve; The output terminal of test product valve respectively with described decay current infusion circuit in operation valve V1, the bidirectional control valve V2 in the sinusoidal current infusion circuit be connected with bidirectional control valve V3 in the high voltage infusion circuit; Ground connection after the low pressure end of the low pressure end of the low pressure end of described decay current infusion circuit, sinusoidal current infusion circuit and high voltage infusion circuit links to each other with the low pressure end of test product valve respectively.
2. the fault current operating test device of a kind of flexible DC power transmission MMC valve as claimed in claim 1, it is characterized in that described decay current infusion circuit comprises power supply E1, charge switch Kc1, direct current capacitors C1, load reactance device L1, operation valve V1, integrated gate commutated valve transistor I GCT, damping resistance R and diode D; Described power supply E1 is in parallel with direct current capacitors C1; Described charge switch Kc1 is connected between described power supply E1 and the direct current capacitors C1; Described integrated gate commutated valve transistor I GCT inverse parallel diode D forms controlled shutoff device G; Described controlled shutoff device G connects with damping resistance R, forms the G-R branch road; Described load reactance device L1 and operation valve V1 series connection; Connect with load reactance device L1 and operation valve V1 after described G-R branch road and the direct current capacitors C1 parallel connection.
3. the fault current operating test device of a kind of flexible DC power transmission MMC valve as claimed in claim 1, it is characterized in that described sinusoidal current infusion circuit comprises power supply E2, charge switch Kc2, direct current capacitors C2, load reactance device L2 and bidirectional control valve V2; Described power supply E2 is in parallel with direct current capacitors C2; Described charge switch Kc2 is connected between described power supply E2 and the direct current capacitors C2; Described load reactance device L2 and operation valve V2 series connection; Described direct current capacitors C2 connects with described load reactance device L2 and bidirectional control valve V2.
4. the fault current operating test device of a kind of flexible DC power transmission MMC valve as claimed in claim 1 is characterized in that, described high voltage infusion circuit comprises power supply E3, charge switch Kc3, direct current capacitors C3, load reactance device L3 and bidirectional control valve V3; Described power supply E3 is in parallel with direct current capacitors C3; Described charge switch Kc3 is connected between described power supply E3 and the direct current capacitors C3; Described load reactance device L3 and operation valve V3 series connection; Described direct current capacitors C3 connects with described load reactance device L3 and bidirectional control valve V3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200361660U CN202066942U (en) | 2011-02-11 | 2011-02-11 | Fault current operation test device for flexible direct current power transmission MMC (modular multi-level converter) valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200361660U CN202066942U (en) | 2011-02-11 | 2011-02-11 | Fault current operation test device for flexible direct current power transmission MMC (modular multi-level converter) valve |
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| Publication Number | Publication Date |
|---|---|
| CN202066942U true CN202066942U (en) | 2011-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200361660U Expired - Fee Related CN202066942U (en) | 2011-02-11 | 2011-02-11 | Fault current operation test device for flexible direct current power transmission MMC (modular multi-level converter) valve |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692542A (en) * | 2012-05-04 | 2012-09-26 | 中电普瑞电力工程有限公司 | Trigger method of auxiliary valve in a short circuit current test apparatus |
| CN103048502A (en) * | 2012-12-11 | 2013-04-17 | 国网智能电网研究院 | Control protection system of valve steady-state operation test device of shutoff device |
| CN103066551A (en) * | 2012-12-13 | 2013-04-24 | 国网智能电网研究院 | Fault protective system for short-circuit current testing apparatus |
| CN103837827A (en) * | 2014-03-22 | 2014-06-04 | 中国科学院电工研究所 | Fault operation test device of flexible direct current transmission valve |
| CN104820119A (en) * | 2015-04-30 | 2015-08-05 | 许继集团有限公司 | AC-DC hybrid high current generator |
| 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 |
| CN105807165A (en) * | 2016-05-05 | 2016-07-27 | 东北电力大学 | MMC converter station running state fuzzy comprehensive evaluating method |
| 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 |
-
2011
- 2011-02-11 CN CN2011200361660U patent/CN202066942U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692542A (en) * | 2012-05-04 | 2012-09-26 | 中电普瑞电力工程有限公司 | Trigger method of auxiliary valve in a short circuit current test apparatus |
| CN103048502A (en) * | 2012-12-11 | 2013-04-17 | 国网智能电网研究院 | Control protection system of valve steady-state operation test device of shutoff device |
| CN103048502B (en) * | 2012-12-11 | 2015-04-29 | 国网智能电网研究院 | Control protection system of valve steady-state operation test device of shutoff device |
| CN103066551A (en) * | 2012-12-13 | 2013-04-24 | 国网智能电网研究院 | Fault protective system for short-circuit current testing apparatus |
| CN103066551B (en) * | 2012-12-13 | 2015-04-01 | 国网智能电网研究院 | Fault protective system for short-circuit current testing apparatus |
| CN103837827B (en) * | 2014-03-22 | 2017-01-18 | 中国科学院电工研究所 | Fault operation test device of flexible direct current transmission valve |
| CN103837827A (en) * | 2014-03-22 | 2014-06-04 | 中国科学院电工研究所 | Fault operation test device of flexible direct current transmission valve |
| CN104820119A (en) * | 2015-04-30 | 2015-08-05 | 许继集团有限公司 | AC-DC hybrid high current generator |
| 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 |
| CN105807165A (en) * | 2016-05-05 | 2016-07-27 | 东北电力大学 | MMC converter station running state fuzzy comprehensive evaluating method |
| 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 |
| CN105807165B (en) * | 2016-05-05 | 2019-01-04 | 东北电力大学 | MMC converter station operating status fuzzy comprehensive evaluation method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140325 Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140325 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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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: 20140325 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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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20170211 |