CN203894367U - Thyristor shunting detection circuit for voltage source transverter - Google Patents
Thyristor shunting detection circuit for voltage source transverter Download PDFInfo
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- CN203894367U CN203894367U CN201420235910.3U CN201420235910U CN203894367U CN 203894367 U CN203894367 U CN 203894367U CN 201420235910 U CN201420235910 U CN 201420235910U CN 203894367 U CN203894367 U CN 203894367U
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- thyristor
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- 238000001514 detection method Methods 0.000 title abstract description 4
- 238000012360 testing method Methods 0.000 claims abstract description 27
- 239000003990 capacitor Substances 0.000 claims description 11
- 238000002474 experimental method Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000008358 core component Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
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Abstract
The utility model relates to a thyristor shunting detection circuit for a voltage source transverter. The circuit comprises a testing power supply, a DC power supply, a charging circuit and a resonant loop of the thyristor of the voltage source transverter connected by the testing apparatus, which are connected in order. According to the thyristor shunting detection circuit, a huge impact current can be constructed under the condition of low voltage and small capacitance value, short circuit faults of UPFC or a flexible direct current common direct current bus can be simulated, and requirements of an impact current traversing the half-bridge voltage source transverter thyristor can be satisfied.
Description
Technical field:
The utility model relates to a kind of thyristor shunt testing circuit, specifically relates to a kind of thyristor shunt testing circuit for half-bridge structure voltage source converter.
Background technology:
Thyristor device is a kind of high voltage, powerful power semiconductor device, it has that capacity is large, efficiency is high and the controlled advantage such as good, be widely used in the circuit such as rectification, inversion, copped wave and switch to electric energy, being the important interface between information industry and conventional industries, is the bridge between light current control and forceful electric power controlled device.
Along with the development of Power Electronic Technique, be that the operational reliability of basic high-pressure series valve and the viability under various POWER SYSTEM STATE become gradually one and be related to the key issue that can HVDC be used widely in electric system as the device for high-power power electronic of the core component of HVDC.In order to improve the reliability of thyristor, carried out a large amount of theoretical research work, but complete test remains the final technological means that improves and ensure Thyristors in series valve reliability.
Overcurrent test be check valve under failure condition, tolerance excess current, voltage and associated hot effect thereof ability.The application is reliable under failure condition for how triggers thyristor, and investigates thyristor and tolerate large current capacity.
Utility model content:
The purpose of this utility model is to provide a kind of thyristor shunt testing circuit for voltage source converter, and the utility model can meet the requirement of inspection half-bridge voltage source transverter thyristor being flow through to dash current ability.
For achieving the above object, the utility model is by the following technical solutions: a kind of thyristor shunt testing circuit for voltage source converter, described circuit comprises experiment power supply, direct supply, the charging circuit connecting successively and the resonant tank being connected with the thyristor tested device of described voltage source converter.
A kind of thyristor shunt holding circuit for half-bridge structure voltage source converter that the utility model provides, described experiment power supply comprises low-pressure single-phase alternating current power supply or low-voltage three-phase AC power supply and the isolating switch being connected with described power supply.
A kind of thyristor shunt testing circuit for voltage source converter that the utility model provides, described direct supply comprises pressure regulator, the transformer being connected in series successively with described experiment power supply and does not control rectifier bridge.
Another preferred a kind of thyristor shunt testing circuit for voltage source converter that the utility model provides, described charging circuit comprises with described does not control charging resistor R1 and the K switch 1 that rectification bridge output end is connected in series successively.
The preferred a kind of thyristor shunt testing circuit for voltage source converter again that the utility model provides, described resonant tank comprises the inductance L, resistance R 2, thyristor and the K switch 2 that are connected successively with the capacitor C of described charge circuit parallel connection, with described charging circuit one end; Described thyristor parameter should be not less than tested device thyristor I
2t value and be not less than tested device thyristor withstand voltage;
Described charging circuit is for controlling the duration of charging of described capacitor C.
Another preferred a kind of thyristor shunt testing circuit for voltage source converter that the utility model provides, described tested device comprise with described discharge loop in the half-bridge voltage source transverter of thyristor reverse parallel connection, described half-bridge voltage source transverter comprises that 2 IGBT are composed in series the half-bridge brachium pontis of pipe up and down, every described IGBT and fly-wheel diode reverse parallel connection;
Parallel connection direct capacitor between upper pipe IGBT collector and lower pipe IGBT emitter, submodule bypass thyristor in parallel between described half-bridge brachium pontis mid point and lower pipe IGBT emitter; Described half-bridge brachium pontis connects controller.
Another preferred a kind of thyristor shunt testing circuit for voltage source converter that the utility model provides, the described rectifier bridge of not controlling is single-phase rectification bridge or three-phase commutation bridge.
With immediate prior art ratio, the utility model provides technical scheme to have following excellent effect
1, test unit of the present utility model is simple in structure, and test method is simple and reliable;
2, the required power supply capacity of test of the present utility model is less;
3, the utility model uses less capacitance can construct great dash current under lower voltage;
4, the utility model can be simulated the fault of flexible direct current DC bus short circuit after UPFC, meets the requirement of inspection half-bridge voltage source transverter thyristor being flow through to dash current ability;
5, the half-bridge voltage source transverter in the utility model is used for checking dash current whether can produce harmful effect to submodule bypass thyristor;
6, ground connection discharge loop for making capacitor C electric discharge, warranty test safety after test.
Brief description of the drawings
Fig. 1 is electrical block diagram of the present utility model.
Embodiment
Below in conjunction with embodiment, utility model is described in further detail.
Embodiment 1:
As shown in Figure 1, this routine utility model comprises the experiment power supply, direct supply, charging circuit, resonant tank and the tested device that connect successively for the thyristor shunt holding circuit of half-bridge structure voltage source converter; Described resonant tank is connected with ground connection discharge loop.
Described experiment power supply comprises low-pressure single-phase alternating current power supply or low-voltage three-phase AC power supply and the isolating switch being connected with described power supply.
Described direct supply comprises pressure regulator, the transformer being connected in series successively with described experiment power supply and does not control rectifier bridge; The described rectifier bridge of not controlling is single-phase rectification bridge or three-phase commutation bridge.
Described charging circuit comprises with described does not control charging resistor R1 and the K switch 1 that rectification bridge output end is connected in series successively.
Described resonant tank comprises the inductance L, resistance R 2, thyristor and the K switch 2 that are connected successively with the capacitor C of described charge circuit parallel connection, with described charging circuit one end; Described thyristor is for there being the tested device of being greater than thyristor I
2t value and be greater than tested device thyristor withstand voltage; Described charging circuit is for the duration of charging of control capacitance C.
Described tested device comprise with described discharge loop in the half-bridge voltage source transverter of thyristor reverse parallel connection, described half-bridge voltage source transverter comprises that 2 IGBT are composed in series the half-bridge brachium pontis of pipe up and down, every described IGBT and fly-wheel diode reverse parallel connection;
Parallel connection direct capacitor between upper pipe IGBT collector and lower pipe IGBT emitter, submodule bypass thyristor in parallel between described half-bridge brachium pontis mid point and lower pipe IGBT emitter; Described half-bridge brachium pontis connects controller.
Described ground connection discharge loop comprises and anodal K switch 3 and the discharge resistance R3 connecting with described K switch 3 and the described discharge resistance R3 ground connection being connected of described capacitor C.
The detection method of the circuit that comprises technique scheme is:
1) K switch of disconnection resonant tank
2, ground connection discharge loop K switch
3, half-bridge voltage source Converter controller powers on, and makes it produce trigger pulse, makes to manage up and down IGBT all always in off state, makes thyristor in bypass thyristor and resonant tank all always in triggering state;
2) the circuit breaker Q Z of closed experiment power supply and the K switch of charging circuit
1;
3) regulate pressure regulator, make DC bus-bar voltage reach requirement, to the capacitor C charging of resonant tank;
4) after charging reaches and stablizes, the circuit breaker Q Z of open test power supply and the K switch of charging circuit
1;
5) K switch of closed resonant tank
2, test starts;
6) after being completed, the K switch of closed ground connection discharge loop
3, after electric capacity fully discharges, whether intactly detect respectively in all thyristors and half-bridge voltage source transverter each device.
Wherein, resonant tank is for generation of dash current, and thyristor is for checking the ability that flows through dash current, half-bridge voltage source transverter to be used for checking dash current whether can produce harmful effect to submodule bypass thyristor.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit, although the utility model is had been described in detail with reference to above-described embodiment, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement embodiment of the present utility model, and do not depart from any amendment of the utility model spirit and scope or be equal to replacement, it all should be encompassed in the middle of this claim scope.
Claims (7)
1. for a thyristor shunt testing circuit for voltage source converter, it is characterized in that: described circuit comprises experiment power supply, direct supply, the charging circuit connecting successively and the resonant tank being connected with the thyristor tested device of described voltage source converter.
2. a kind of thyristor shunt testing circuit for voltage source converter as claimed in claim 1, is characterized in that: described experiment power supply comprises low-pressure single-phase alternating current power supply or low-voltage three-phase AC power supply and the isolating switch being connected with described power supply.
3. a kind of thyristor shunt testing circuit for voltage source converter as claimed in claim 1, is characterized in that: described direct supply comprises pressure regulator, the transformer being connected in series successively with described experiment power supply and do not control rectifier bridge.
4. a kind of thyristor shunt testing circuit for voltage source converter as claimed in claim 3, is characterized in that: described charging circuit comprises with described does not control charging resistor R1 and the K switch 1 that rectification bridge output end is connected in series successively.
5. a kind of thyristor shunt testing circuit for voltage source converter as claimed in claim 4, is characterized in that: described resonant tank comprises the inductance L, resistance R 2, thyristor and the K switch 2 that are connected successively with the capacitor C of described charge circuit parallel connection, with described charging circuit one end; Described thyristor parameter should be not less than tested device thyristor I
2t value and be not less than tested device thyristor withstand voltage;
Described charging circuit is for controlling the duration of charging of described capacitor C.
6. a kind of thyristor shunt testing circuit for voltage source converter as claimed in claim 5, it is characterized in that: described tested device comprise with discharge loop in the half-bridge voltage source transverter of thyristor reverse parallel connection, described half-bridge voltage source transverter comprises that 2 IGBT are composed in series the half-bridge brachium pontis of pipe up and down, every described IGBT and fly-wheel diode reverse parallel connection;
Parallel connection direct capacitor between upper pipe IGBT collector and lower pipe IGBT emitter, submodule bypass thyristor in parallel between described half-bridge brachium pontis mid point and lower pipe IGBT emitter; Described half-bridge brachium pontis connects controller.
7. a kind of thyristor shunt testing circuit for voltage source converter as claimed in claim 3, is characterized in that: the described rectifier bridge of not controlling is single-phase rectification bridge or three-phase commutation bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420235910.3U CN203894367U (en) | 2014-05-09 | 2014-05-09 | Thyristor shunting detection circuit for voltage source transverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420235910.3U CN203894367U (en) | 2014-05-09 | 2014-05-09 | Thyristor shunting detection circuit for voltage source transverter |
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| Publication Number | Publication Date |
|---|---|
| CN203894367U true CN203894367U (en) | 2014-10-22 |
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ID=51720749
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420235910.3U Expired - Fee Related CN203894367U (en) | 2014-05-09 | 2014-05-09 | Thyristor shunting detection circuit for voltage source transverter |
Country Status (1)
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| CN (1) | CN203894367U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110850197A (en) * | 2019-10-22 | 2020-02-28 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | MMC power module overvoltage thyristor bypass test method |
| CN113721085A (en) * | 2020-05-26 | 2021-11-30 | 南京南瑞继保电气有限公司 | Submodule testing device and method |
| CN114167272A (en) * | 2021-12-03 | 2022-03-11 | 广东电网有限责任公司 | Flexible direct current converter valve steady-state operation test device and method |
| CN117031380A (en) * | 2023-10-08 | 2023-11-10 | 清华四川能源互联网研究院 | Current sensor low-frequency characteristic verification circuit and verification method thereof |
-
2014
- 2014-05-09 CN CN201420235910.3U patent/CN203894367U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110850197A (en) * | 2019-10-22 | 2020-02-28 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | MMC power module overvoltage thyristor bypass test method |
| CN110850197B (en) * | 2019-10-22 | 2021-10-15 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | MMC power module overvoltage thyristor bypass test method |
| CN113721085A (en) * | 2020-05-26 | 2021-11-30 | 南京南瑞继保电气有限公司 | Submodule testing device and method |
| CN114167272A (en) * | 2021-12-03 | 2022-03-11 | 广东电网有限责任公司 | Flexible direct current converter valve steady-state operation test device and method |
| CN114167272B (en) * | 2021-12-03 | 2024-04-12 | 广东电网有限责任公司 | Flexible direct current converter valve steady-state operation test device and method |
| CN117031380A (en) * | 2023-10-08 | 2023-11-10 | 清华四川能源互联网研究院 | Current sensor low-frequency characteristic verification circuit and verification method thereof |
| CN117031380B (en) * | 2023-10-08 | 2023-12-19 | 清华四川能源互联网研究院 | Current sensor low-frequency characteristic verification circuit and verification method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170525 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee after: China Electric Prime Technology Co., Ltd. Patentee after: State Grid Corporation of China 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 Electric Prime Technology Co., Ltd. |
|
| 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: 20141022 Termination date: 20190509 |