CN202631647U - Test device for detecting resistance of high voltage direct current (HVDC) transmission converter valve - Google Patents
Test device for detecting resistance of high voltage direct current (HVDC) transmission converter valve Download PDFInfo
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- CN202631647U CN202631647U CN 201220121778 CN201220121778U CN202631647U CN 202631647 U CN202631647 U CN 202631647U CN 201220121778 CN201220121778 CN 201220121778 CN 201220121778 U CN201220121778 U CN 201220121778U CN 202631647 U CN202631647 U CN 202631647U
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- 238000012360 testing method Methods 0.000 title claims abstract description 47
- 230000005540 biological transmission Effects 0.000 title claims abstract description 16
- 238000013016 damping Methods 0.000 claims abstract description 17
- 239000003990 capacitor Substances 0.000 claims description 21
- 238000010276 construction Methods 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000004088 simulation Methods 0.000 abstract description 2
- 230000001052 transient effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model relates to a test device for detecting resistance of a high voltage direct current (HVDC) transmission converter valve, comprising a power supply circuit, a resonance circuit, a boost rectification circuit, a voltage applying circuit and a sample circuit; the power supply circuit supplies power for the whole device; the resonance circuit transmits a current to the boost rectification circuit to perform rectification, and the rectified current is transmitted to the sample circuit to conduct a test. The test device for detecting resistance of an HVDC transmission converter valve performs an equivalent simulation of current impulsion a damping resistance bears and the power it consumes in actual working conditions, and the test device has the advantages of simple topological structure, flexible control, convenient and rapid manipulation, and convenient parameter adjustment, thereby being able to satisfy test requirements in a steady state and in a transient state. The test device for detecting resistance of an HVDC transmission converter valve adopts a sinusoidal resonance current, works under a discontinuous mode, and has soft switching characteristics of zero-current turning-on and turning-off, switching losses are greatly reduced, and efficiency of the device is improved; and the test device disclosed by the utility model can realize relatively high repetition frequencies and switching of frequencies in operation.
Description
Technical field
The utility model relates to field of power, is specifically related to a kind of test unit that is used to detect high voltage direct current transmission converter valve resistance.
Background technology
Nowadays the worldwide fast development of high voltage dc transmission technology that is the basis with the thyristor serial connection technology; Obtained large-scale application in particularly wide, the primary energy skewness weighing apparatus overall background in China region; Represent technical advantage at high capacity, long distance power transmission and large scale electric network aspect interconnected, obtained good economic benefit.Along with the further raising of direct-current transmission voltage, transmission capacity, DC transmission system is the role ever more important in electrical network, and it is particularly outstanding that the meaning of its safe reliability becomes.DC converter valve as the key equipment of DC transmission system, guarantees that its property safe and reliable to operation seems that head ought be wherein.Therefore, DC converter valve just should note examining each the component performance that is used to assemble in process of production conscientiously, and requirement when confirming that each parts can satisfy actual motion guarantees the quality of production.
Damping circuit plays a part dynamic voltage balancing in thyristor valve, damping resistance wherein is one of crucial component of DC converter valve.At work, damping resistance can frequently receive the impact of pulse current, so its ability that stands pulse power characteristic that is its important examination.Because thyristor valve voltage is high, electric current is big, and like the performance of check damping resistance in actual condition, required testing equipment cost is high, and the construction difficulty is big, less economical.
The utility model content
To prior art, the utility model provides a kind of test unit that is used to detect high voltage direct current transmission converter valve resistance, and its topological structure is simple, and control flexibly, and is economic and practical.
A kind of test unit that is used to detect high voltage direct current transmission converter valve resistance that the utility model provides, its improvements are that said test unit comprises power circuit, resonant circuit, boost rectifying circuit, exert pressure circuit and test product circuit;
Said power circuit is whole device power supply; Said resonant circuit is passed to said boost rectifying circuit with electric current and is carried out rectification, the said test product circuit of the current supply after the rectification; The said circuit of exerting pressure applies reverse voltage for the thyristor two ends of said test product circuit.
Wherein, said test product circuit comprises damping capacitor C, resistance R 1 and thyristor;
It is parallelly connected after said damping capacitor C connects with resistance R 1 with said thyristor.
Wherein, said power circuit comprises three-phase alternating-current supply and the uncontrollable rectification circuit of three-phase; Said three-phase alternating-current supply is through the uncontrollable rectification circuit rectification of said three-phase.
Wherein, said resonant circuit comprises inverter circuit, resonant inductance resonant electric capacity; Said inverter circuit input end is connected with the uncontrollable rectification circuit output end of said three-phase, and said inverter circuit output terminal is connected with said high voltage step-up circuit through the resonant inductance resonant electric capacity of series connection.
Wherein, said boost rectifying circuit comprises transformer and rectification circuit; Said transformer secondary is connected with said rectification circuit input end, and the former limit of said transformer is connected with the resonant inductance resonant electric capacity of said series connection; The output terminal of said rectification circuit is connected with the said circuit of exerting pressure.
Wherein, the said circuit of exerting pressure comprises diode, resistance R 2, IGBT and DC source; Said IGBT connect with said DC source constitute behind the IGBT branch road parallelly connected with said diode; Be provided with said resistance R 1 between said IGBT branch road and the said diode branch; The said circuit of exerting pressure is connected with said test product circuit.
Wherein, said inverter circuit is the H bridge construction, and each brachium pontis comprises two IGBT modules up and down, and each IGBT module comprises antiparallel IGBT and diode.
Wherein, said rectification circuit is a full bridge rectifier.
Wherein, the uncontrollable rectification circuit output end parallel connection of said three-phase is provided with capacitor C d, and said capacitor C d is parallelly connected with said inverter circuit.
With the prior art ratio, the beneficial effect of the utility model is:
The rush of current that the utility model equivalent simulation damping resistance bears at actual condition and the power of consumption, this test unit topological structure is simple, control flexibly, it is convenient to control, parameter regulation is convenient, can satisfy the testing requirements under stable state and the transient state.
The utility model resonance current sineization is in discontinuous mode, has the soft switching characteristic of zero current turning-on and shutoff, and switching loss reduces greatly, and unit efficiency is high;
The utility model can be realized higher repetition frequency, and the switching of frequency in service.
Description of drawings
The test unit circuit topology figure that is used to detect high voltage direct current transmission converter valve resistance that Fig. 1 provides for the utility model.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done further to specify.
Circuit topology figure as shown in Figure 1, as to provide for the utility model.Test unit comprises power supply, resonant circuit, high voltage step-up rectification circuit and test product circuit;
Power circuit is whole device power supply; Power circuit produces the stable state resonance current of similar sine through resonant circuit, and resonance current is converted into constant electric current output after through the high voltage step-up rectification circuit, can make an experiment to the test product circuit.
The power supply of the utility model is a three-phase alternating-current supply.Power circuit comprises three-phase alternating-current supply and the uncontrollable rectification circuit of three-phase, and the uncontrollable rectification circuit of its three-phase is with three-phase alternating current electric rectification and output.
The resonant circuit of the utility model comprises the resonant inductance resonant electric capacity of inverter circuit and series connection; The inverter circuit input end is connected with the uncontrollable rectification circuit output end of three-phase; Inverter circuit output terminal one of which end is through the resonant inductance L of series connection
rThe resonant capacitor C
rBe connected with the former limit of the transformer in the boost rectifying circuit one end, its other end directly is connected with the former limit of the transformer other end.The resonance inversion circuit is the H bridge construction, and each brachium pontis comprises two IGBT modules up and down, and each IGBT module comprises antiparallel IGBT and diode.
The utility model is provided with a capacitor C
d, it is connected in parallel between uncontrollable rectification circuit of three-phase and the inverter circuit, and three-phase alternating voltage transforms DC voltage through rectifier bridge and gives capacitor C
dCharging, this capacitor C
dPlay an effect of supporting voltage.Like this, the uncontrollable rectifier bridge part of three-phase can equivalence be a constant pressure source just, supplies power to inverter circuit.
The boost rectifying circuit of the utility model comprises transformer and rectification circuit; The transformer secondary is connected with rectification circuit input end, and the output terminal of rectification circuit is connected with the circuit of exerting pressure.The former limit of transformer is connected with the resonant circuit output terminal.Wherein rectification circuit is a full bridge rectifier.
The circuit of exerting pressure of the utility model is that reverse voltage applies circuit, comprises diode, resistance R 2, IGBT and DC source; Said IGBT emitter is connected with said DC source negative pole and is constituted behind the IGBT branch road parallelly connectedly with said diode, and the positive pole of diode is connected with the positive pole of said DC source; Be provided with said resistance R 1 between said IGBT branch road and the said diode branch; The said circuit of exerting pressure is connected with said test product circuit.
The test product circuit of the utility model comprises damping capacitor C, resistance R 1 and thyristor; It is parallelly connected after damping capacitor C connects with resistance R 1 with thyristor.
During test; Power supply produces the stable state resonance current of similar sine through resonant circuit, and resonance current is given damping capacitor C charging through being converted into constant electric current output behind the boost rectifying circuit; The voltage at damping capacitor C two ends will present linear growth in time, through duration of charging t
c, reach certain electric pressure after, control circuit sends the switching device IGBT module in the control signal locking resonant circuit, makes it stop the test product circuit is charged.A bit of time t pauses
sAfter, control circuit sends the thyristor trigger pip, the thyristor conducting, and damping capacitor C storage power is released through resistance R 1 and the path that thyristor constitutes, and resistance R 1 will be born the pulse shock that once conforms to actual condition.After discharge finishes, trigger the switching device IGBT that is parallel to the thyristor two ends, direct voltage source is oppositely put on the thyristor two ends, accelerate thyristor and turn-off.In the actual motion, in the one-period, damping resistance will bear multiple pulses and impact, in order to satisfy the equivalence of test, and can be when test unit needs to the recharge of damping capacitor C.The resistance R 2 of present embodiment is in voltage reversal, to play the restriction function of current.The diode of present embodiment is parallelly connected in the same way relation with rectification circuit in the boost rectifying circuit, is in order to protect full bridge rectifier and to avoid the energy reflection to power circuit.
Should be noted that at last: above embodiment only in order to the explanation the utility model technical scheme but not to its restriction; Although the utility model has been carried out detailed explanation with reference to the foregoing description; Under the those of ordinary skill in field be to be understood that: still can make amendment or be equal to replacement the embodiment of the utility model; And do not break away from any modification of the utility model spirit and scope or be equal to replacement, it all should be encompassed in the middle of the claim scope of the utility model.
Claims (9)
1. a test unit that is used to detect high voltage direct current transmission converter valve resistance is characterized in that, said test unit comprises power circuit, resonant circuit, boost rectifying circuit, exert pressure circuit and test product circuit;
Said power circuit is said test unit power supply; Said resonant circuit is passed to said boost rectifying circuit with electric current and is carried out rectification, the said test product circuit of the current supply after the rectification; The said circuit of exerting pressure applies reverse voltage for the thyristor two ends of said test product circuit.
2. test unit as claimed in claim 1 is characterized in that, said test product circuit comprises damping capacitor C, resistance R 1 and thyristor;
It is parallelly connected after said damping capacitor C connects with resistance R 1 with said thyristor.
3. test unit as claimed in claim 1 is characterized in that, said power circuit comprises three-phase alternating-current supply and the uncontrollable rectification circuit of three-phase; Said three-phase alternating-current supply is through the uncontrollable rectification circuit rectification of said three-phase.
4. test unit as claimed in claim 1 is characterized in that, said resonant circuit comprises inverter circuit, resonant inductance L
rThe resonant capacitor C
rSaid inverter circuit input end is connected with the uncontrollable rectification circuit output end of said three-phase, and said inverter circuit output terminal is through the resonant inductance L of series connection
rThe resonant capacitor C
rBe connected with said boost rectifying circuit.
5. test unit as claimed in claim 1 is characterized in that said boost rectifying circuit comprises transformer and rectification circuit; Said transformer secondary is connected with said rectification circuit input end, former limit of said transformer and said resonant inductance resonant capacitor C of connecting
rConnect; The output terminal of said rectification circuit is connected with the said circuit of exerting pressure.
6. test unit as claimed in claim 1 is characterized in that, the said circuit of exerting pressure comprises diode, resistance R 2, IGBT and DC source; Said IGBT connect with said DC source constitute behind the IGBT branch road parallelly connected with said diode; Be provided with said resistance R 1 between said IGBT branch road and the said diode branch; The said circuit of exerting pressure is connected with said test product circuit.
7. test unit as claimed in claim 4 is characterized in that, said inverter circuit is the H bridge construction, and each brachium pontis comprises two IGBT modules up and down, and each IGBT module comprises antiparallel IGBT and diode.
8. test unit as claimed in claim 5 is characterized in that, said rectification circuit is a full bridge rectifier.
9. like claim 3 or 4 arbitrary described test units, it is characterized in that the uncontrollable rectification circuit output end parallel connection of said three-phase is provided with capacitor C d, said capacitor C d is parallelly connected with said inverter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220121778 CN202631647U (en) | 2012-03-28 | 2012-03-28 | Test device for detecting resistance of high voltage direct current (HVDC) transmission converter valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220121778 CN202631647U (en) | 2012-03-28 | 2012-03-28 | Test device for detecting resistance of high voltage direct current (HVDC) transmission converter valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202631647U true CN202631647U (en) | 2012-12-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220121778 Expired - Lifetime CN202631647U (en) | 2012-03-28 | 2012-03-28 | Test device for detecting resistance of high voltage direct current (HVDC) transmission converter valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202631647U (en) |
-
2012
- 2012-03-28 CN CN 201220121778 patent/CN202631647U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: INSTITUTE OF STATE GRID INTELLIGENT ELECTRIC GRIDS Effective date: 20140130 Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: C-EPRI ELECTRIC POWER ENGINEERING CO., LTD. Effective date: 20140130 |
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| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 102200 CHANGPING, BEIJING TO: 100031 XICHENG, BEIJING |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140130 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: State Grid Smart Grid Institute Patentee after: China-EPRI Electric Power Engineering Co., Ltd. Address before: 102200 Beijing city Changping District South Shao Zhen Nan Road No. 16 Patentee before: China-EPRI Electric Power Engineering Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| ASS | Succession or assignment of patent right |
Owner name: INSTITUTE OF STATE GRID INTELLIGENT ELECTRIC GRIDS Free format text: FORMER OWNER: INSTITUTE OF STATE GRID INTELLIGENT ELECTRIC GRIDS C-EPRI ELECTRIC POWER ENGINEERING CO., LTD. Effective date: 20150108 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wei Xiaoguang Inventor after: Cha Kunpeng Inventor after: Zhao Fuqiang Inventor after: Wang Gaoyong Inventor after: Feng Jian Inventor after: Zhu Zhenhua Inventor before: Wei Xiaoguang Inventor before: Cha Kunpeng Inventor before: Wang Gaoyong Inventor before: Feng Jian |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: |
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| TR01 | Transfer of patent right |
Effective date of registration: 20150108 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: State Grid Smart Grid Institute Patentee after: China-EPRI Electric Power Engineering Co., Ltd. Patentee after: Electric Power Research Institute of State Grid Shandong Electric Power Company Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: State Grid Smart Grid Institute Patentee before: China-EPRI Electric Power Engineering Co., Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20170605 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee after: China-EPRI Electric Power Engineering Co., Ltd. Patentee after: State Grid Corporation of China Co-patentee after: Electric Power Research Institute of State Grid Shandong Electric Power Company Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee before: State Grid Smart Grid Institute Patentee before: State Grid Corporation of China Co-patentee before: China-EPRI Electric Power Engineering Co., Ltd. Co-patentee before: Electric Power Research Institute of State Grid Shandong Electric Power Company |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121226 |
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| CX01 | Expiry of patent term |