CN205539373U - Big current pulse collision test platform of direct current current -limiting circuit -breaker high pressure - Google Patents
Big current pulse collision test platform of direct current current -limiting circuit -breaker high pressure Download PDFInfo
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- CN205539373U CN205539373U CN201620031111.3U CN201620031111U CN205539373U CN 205539373 U CN205539373 U CN 205539373U CN 201620031111 U CN201620031111 U CN 201620031111U CN 205539373 U CN205539373 U CN 205539373U
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Abstract
The utility model relates to a detect technical field, concretely relates to big current pulse collision test platform of direct current current -limiting circuit -breaker high pressure. The utility model discloses a test platform including connect gradually be used for producing the big current oscillation pulse of high pressure impulse current generating device, be used for control through current waveform control device, the test object of test object current pulse wave form and the sampling resistor of establishing ties with test object, should test the platform and can accord with superconductive direct current current -limiting circuit -breaker test characteristics and can satisfy the big current pulse of high pressure again and assault test platform's requirement, and it is small to test the platform, the installation condition can be satisfied in general laboratory, owing to be applicable to the laboratory condition, maintain consequently that simply the test operation is easy, empirical risk and safe risk are low.
Description
Technical field
The present invention relates to detection technique field, be specifically related to a kind of direct current current-limiting circuit breaker high-voltage great-current pulse shock test platform.
Background technology
Reliable and effective supply of electric power and exploitation Renewable resource propose huge challenge for improving electric power transmission mode.Based on low-loss, remote, bulk power transmission and more effectively connect the advantage that regenerative resource networks and is easy to flexible operating, D.C. high voltage transmission has obtained new attention.The appearance of the Technology of HVDC based Voltage Source Converter being based particularly on voltage source converter makes establishing of multi-terminal high-voltage direct current network develop into possibility, and more and more attractive.The dc circuit breaker with quick-speed turning on-off direct fault current and isolated fault function is to realize the essential and vital element of multi-terminal high-voltage direct current network.
At present, dc circuit breaker mainly uses high-voltage direct current switch, but it is only applicable to point-to-point DC transmission system and switch off time is longer, system is understable.The quick high-pressure dc circuit breaker therefore with high connecting-disconnecting function remains a bottleneck of multi-terminal high-voltage direct current development, limits the development of multi-terminal high-voltage direct current.Therefore, people start sight to focus on the exploitation of direct supercurrent current limiting circuit breaker and to the conversion of actual productivity.And the research that superconducting current-limiting chopper reality converts needs the test equipment that adapts therewith.
Based on existing testing equipment, the existing like product of analogy carries out the R&D Approach of new-product development, and its R&D costs and R&D risk are relatively low, is the method usually taked in research and development.In the research and development of direct supercurrent current limiting circuit breaker no exception, R&D process has been continued to use high-voltage direct current switch testing equipment in a large number direct supercurrent current limiting circuit breaker has been tested.And direct supercurrent current limiting circuit breaker is to carry out breaking current by superconductor state conversion characteristic in big electric current and high-intensity magnetic field, it is that the principle by arc cutting breaking current is different from the principle of high-voltage direct current switch, although therefore this kind equipment also can simulate short circuit current, but superconducting current-limiting chopper own characteristic cannot be adapted to, such place capacity prior is limited, it is impossible to adapt to superconducting current-limiting chopper high voltage, the technical characterstic of big electric current.
Another kind of test mode is by building small-sized power transmission network, is accessed by superconducting current-limiting chopper in this simulating grid with simulation linked network test.Such method can simulate the truth of superconducting current-limiting chopper hanging net operation more truly, but build little type simulated power transmission network and need to take bigger place, time-consuming consumption wealth effort.And later maintenance is more difficult, test is difficult to operation, and empirical risk and security risk are bigger.
Summary of the invention
For solving problem above, the invention provides a kind of direct supercurrent current limiting circuit breaker high-voltage great-current pulse shock test platform, this test platform overcomes testing equipment in the research and development of current superconducting current-limiting chopper and does not mates with test features of the object and cannot adapt to the shortcoming such as high voltage, big current technique field requirement.
The technical solution used in the present invention is: a kind of direct current current-limiting circuit breaker high-voltage great-current pulse shock test platform, including the dash current generating means for producing high-voltage great-current oscillating impulse, test object, for controlling the Waveform controller by test object current pulse shape and the sampling resistor connected with test object, it is characterized in that: described dash current generating means, Waveform controller, test object and sampling resistor are sequentially connected with the closed-loop path constituting whole experiment porch, described sampling resistor is connected with test object, for test object current waveform is changed into voltage waveform, for detection device records and display.
As preferably, described dash current generating means includes high-voltage capacitance, high-tension ignition switch and the high voltage induction being sequentially connected with；Described high-voltage capacitance and high voltage induction LC in series oscillating circuit, produce oscillating current pulse.
As preferably, described Waveform controller includes that wave chopping control circuit, IGCT, leadage circuit and the commutation diode being sequentially connected with, the negative electrode of described commutation diode are connected with test object, it is ensured that test object is merely by forward current pulse；The series arm that described leadage circuit is constituted with commutation diode, test object and sampling resistor three is in parallel, by this parallel connection leadage circuit, the energy of negative current pulse is released when dash current generating means forms negative current pulse, to ensure single test only produces a forward current pulse；The series arm formation in parallel wave chopping bypass that described IGCT is constituted with commutation diode, test object and sampling resistor three.
As preferably, commutation diode, test object and sampling resistor in described dash current generating means, Waveform controller are followed in series to form test platform major loop.
As preferably, described leadage circuit includes that power diode and bleeder resistance, the anode of described power diode are connected with high-voltage capacitance negative terminal, and the negative electrode of described power diode is connected with bleeder resistance.
As preferably, described wave chopping control circuit includes voltage synchronous signal generating circuit and delay trigger circuit, described voltage synchronous signal generating circuit monitors major loop igniting turn-on instant by being connected across the resistor voltage divider circuit of inductance high-pressure side and electric capacity negative terminal, and with this moment voltage rising edge for reference to producing synchronization pulse；Described delay trigger circuit includes double optocoupler pulse lock circuit, adjustable delay circuit and amplification driving circuit connected in series.
As preferably, it is overall pulse 0～90 ° that described delay trigger circuit can control wave chopping phase range.
As preferably, this experiment porch also includes charge power supply, and described charge power supply is used for high-voltage capacitor charging to rated voltage.
As preferably, this experiment porch also includes detecting device, and described detection device is connected with sampling resistor, for obtaining the current waveform through testing object.
The present invention obtains and provides the benefit that: the test platform of the present invention include being sequentially connected with for producing the dash current generating means of high-voltage great-current oscillating impulse, for controlling the Waveform controller by test object current pulse shape, test object and the sampling resistor connected with test object, this experiment porch can meet direct supercurrent current limiting circuit breaker testing feature can meet again the requirement of high-voltage great-current pulse shock test platform, and this experiment porch volume is little, common laboratory can meet mounting condition；Owing to being applicable to laboratory condition, therefore safeguarding simple, test operation is easy, and empirical risk and security risk are low.
Accompanying drawing explanation
Fig. 1 is the integrated connection schematic diagram of invention；
Fig. 2 is wave chopping control circuit connection diagram of the present invention；
Fig. 3 is leadage circuit connection diagram of the present invention；
Fig. 4 is delay trigger circuit connection diagram of the present invention；
Fig. 5 is to have test object current waveform figure in the case of time delay wave chopping.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
As shown in Figure 1, this utility model direct current current-limiting circuit breaker high-voltage great-current pulse shock test platform, including be sequentially connected with for producing the dash current generating means 1 of high-voltage great-current oscillating impulse, for controlling the Waveform controller 2 by test object 4 current pulse shape and the test sampling resistor 3 connect of object 4 and testing object 4, test object 4 is connected with sampling resistor 3, for test object 4 current waveform is changed into voltage waveform, for detection device records and display.This experiment porch also includes charge power supply and detection device, and charge power supply is for charging to rated voltage by high-voltage capacitance 10；Detection device is connected with sampling resistor 3, for obtaining the current waveform through testing object.
Shown in Fig. 2-4, dash current generating means 1 includes high-voltage capacitance 10, high-tension ignition switch 11 and the high voltage induction 12 being sequentially connected with, and high-voltage capacitance 10 and high voltage induction 12 constitute LC oscillating circuit, produce oscillating current pulse；Dash current generating means 1 and the commutation diode 23 in Waveform controller 2, test object 4 and sampling resistor 3 test platform in series major loop.
Waveform controller 2 includes wave chopping control circuit 20, IGCT 21, leadage circuit 22 and commutation diode 23, testing the current waveform in object 4 for controlling, this current waveform is can arbitrary phase wave chopping in direct current single-pulse current and all phase scope (0～90 °)；Commutation diode 23 in Waveform controller 2 passes through negative electrode and ensures that it is merely by forward single-pulse current with testing object 4 and connecting.
Leadage circuit 22 in Waveform controller 2 includes power diode 220 and bleeder resistance 221, and wherein the anode of power diode 220 is connected with high-voltage capacitance 10 negative terminal, and negative electrode is connected with bleeder resistance 221.The series arm that this leadage circuit 22 is constituted with commutation diode 23, test object 4 and sampling resistor 3 three is in parallel, the energy of negative current pulse is released by this parallel connection leadage circuit 22 when dash current generating means 1 forms negative current pulse, to ensure single test only produces a forward current pulse.
Current waveform in test object 4 is carried out bypassing wave chopping for when needed by the IGCT 21 in Waveform controller 2 with wave chopping control circuit 20.The series arm formation in parallel wave chopping bypass that wherein IGCT 21 is constituted with commutation diode 23, test object 4 and sampling resistor 3 three.And wave chopping control circuit 20 produces lock-out pulse by monitoring high voltage induction 12 high-pressure side voltage rising edge, this pulse triggers IGCT 21 so that the current waveform in test object 4 is carried out wave chopping after time delay and driving.
Wave chopping control circuit 20 includes voltage synchronous signal generating circuit 201, delay trigger circuit 202, voltage synchronous signal generating circuit 201 is by the resistor voltage divider circuit monitoring major loop igniting turn-on instant being connected across between high voltage induction 12 high-pressure side (connecing terminals 1) and high-voltage capacitance 11 negative terminal (connecing terminals 2), and produces synchronization pulse with this moment voltage rising edge for reference.This synchronization pulse input time delay triggers circuit 202, producing after inputting adjustable delay circuit 2021 time delay after double optocoupler pulse lock circuit 2020 of delay trigger circuit 202 lock and trigger pulse, this pulse amplified drive circuit 2022 produces+15V driving pulse to control the conducting of IGCT after amplifying.The triggering signal output part (terminals 3) of delay trigger circuit 202 connects the G pole of IGCT.
Adjustable delay circuit 202 can be realized by capacitance-resistance integrator delay-time circuit, it is possible to is realized by intervalometer, also by multiple ways of realization such as MCU control realization.Any time delay and pulse amplifying form all can be considered the change way of realization of this delay trigger circuit 202.
In specific embodiments of the present invention, high-voltage capacitance 10 can include multiple electric capacity, is connected in series or in parallel to realize the requirement of different capacitance between each electric capacity.
The operation principle of the present invention is: high-voltage capacitance 10 is by external charge power source charges to rated voltage 10kV, high-voltage capacitance 10, high-tension ignition switch 11, high voltage induction 12, commutation diode 23, test object 4 and sampling resistor 3 major loop in series；Time initial, high-tension ignition switch 11 is off, and major loop is in open circuit, and in test object 4, no current passes through.When high-tension ignition switch 11 combined floodgate, owing to the capacitance terminal voltage high voltage induction 12 high-pressure side voltage jump that can not suddenly change is 10kV, loop is connected, high-voltage capacitance 11 and high voltage induction 12 form LC oscillating circuit and produce vibration heavy current pulse by test object 4 and sampling resistor 3, with function and the performance of detection test object.During high-tension ignition switch 11 combined floodgate, voltage synchronous signal generating circuit 201 monitors combined floodgate through divider resistance, and produce synchronizing signal, this signal produces triggering pulse after delay trigger circuit 202 time delay, turn on triggering IGCT 21, bypass rectifying diode 23 tests object 4 and sampling resistor 3, produces current waveform as shown in Figure 5.Owing to test object 4 is connected with commutation diode 23, therefore restriction oscillation circuit bears the electric current of half-wave will not form unidirectional pulse dash current by test object 4 on test object 4.Again due to IGCT 2) backward voltage cut-off is born when negative half-wave, therefore the electricity of high-voltage capacitance 10 reverse charging also cannot be discharged by it, and the power diode of bleed-off circuit is now in positively biased conducting, therefore the electricity of high-voltage capacitance 10 reverse charging is released by leadage circuit 22, it is ensured that only by pulse dash current in test object.It must be noted that, for preventing lc circuit from continuing vibration, bleeder resistance 221 resistance need to obtain relatively large.
Above example only specific descriptions to embodiment of the present invention, can not be therefore understands that be limitation of the scope of the invention.The most still can make numerous deformation and transformation due to one of ordinary skill in the art, these broadly fall into protection scope of the present invention.
Claims (9)
1. a direct current current-limiting circuit breaker high-voltage great-current pulse shock test platform, including the dash current generating means (1) for producing high-voltage great-current oscillating impulse, test object (4), for controlling the Waveform controller (2) by test object (4) current pulse shape and the sampling resistor (3) connected with test object (4), it is characterized in that: described dash current generating means (1), Waveform controller (2), test object (4) and sampling resistor (3) are sequentially connected with the closed-loop path constituting whole experiment porch, described sampling resistor (3) is connected with test object (4), for test object (4) current waveform is changed into voltage waveform, for detection device records and display.
Direct current current-limiting circuit breaker high-voltage great-current pulse shock test platform the most according to claim 1, it is characterised in that: described dash current generating means (1) includes high-voltage capacitance (10), high-tension ignition switch (11) and the high voltage induction (12) being sequentially connected with；Described high-voltage capacitance (10) and high voltage induction (12) LC in series oscillating circuit, produce oscillating current pulse.
Direct current current-limiting circuit breaker high-voltage great-current pulse shock test platform the most according to claim 2, it is characterized in that: described Waveform controller (2) includes wave chopping control circuit (20), IGCT (21), leadage circuit (22) and the commutation diode (23) being sequentially connected with, the negative electrode of described commutation diode (23) is connected with test object (4), it is ensured that test object (4) is merely by forward current pulse；The series arm that described leadage circuit (22) is constituted with commutation diode (23), test object (4) and sampling resistor (3) three is in parallel, by this parallel connection leadage circuit (22), the energy of negative current pulse is released when dash current generating means (1) forms negative current pulse, to ensure single test only produces a forward current pulse；The series arm formation in parallel wave chopping bypass that described IGCT (21) is constituted with commutation diode (23), test object (4) and sampling resistor (3) three.
Direct current current-limiting circuit breaker high-voltage great-current pulse shock test platform the most according to claim 3, it is characterised in that: commutation diode (23), test object (4) and sampling resistor (3) in described dash current generating means (1), Waveform controller (2) are followed in series to form test platform major loop.
Direct current current-limiting circuit breaker high-voltage great-current pulse shock test platform the most according to claim 4, it is characterized in that: described leadage circuit (22) includes power diode (220) and bleeder resistance (221), the anode of described power diode (220) is connected with high-voltage capacitance (10) negative terminal, and the negative electrode of described power diode (220) is connected with bleeder resistance (221).
Direct current current-limiting circuit breaker high-voltage great-current pulse shock test platform the most according to claim 4, it is characterized in that: described wave chopping control circuit (20) includes voltage synchronous signal generating circuit (201) and delay trigger circuit (202), described voltage synchronous signal generating circuit (201) monitors major loop igniting turn-on instant by being connected across the resistor voltage divider circuit of inductance high-pressure side and electric capacity negative terminal, and with this moment voltage rising edge for reference to producing synchronization pulse；Described delay trigger circuit (202) includes double optocouplers pulse lock circuit (2020), adjustable delay circuit (2021) and amplification driving circuit (2022) connected in series.
Direct current current-limiting circuit breaker high-voltage great-current pulse shock test platform the most according to claim 6, it is characterised in that: it is overall pulse 0～90 ° that described delay trigger circuit (202) can control wave chopping phase range.
Direct current current-limiting circuit breaker high-voltage great-current pulse shock test platform the most according to claim 1, it is characterised in that: described experiment porch also includes charge power supply, and described charge power supply is used for high-voltage capacitor charging to rated voltage.
Direct current current-limiting circuit breaker high-voltage great-current pulse shock test platform the most according to claim 1, it is characterized in that: described experiment porch also includes detecting device, described detection device is connected with sampling resistor (3), is used for obtaining the current waveform through test object (4).
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| CN201620031111.3U CN205539373U (en) | 2016-01-13 | 2016-01-13 | Big current pulse collision test platform of direct current current -limiting circuit -breaker high pressure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105911463A (en) * | 2016-01-13 | 2016-08-31 | 武汉水院电气有限责任公司 | DC current-limiting breaker high-voltage heavy-current pulse impact test platform |
| CN110907790A (en) * | 2019-04-08 | 2020-03-24 | 国网江苏省电力有限公司电力科学研究院 | High-voltage high-power thyristor reverse recovery current test system and test method |
| CN111832961A (en) * | 2020-07-23 | 2020-10-27 | 河南省计量科学研究院 | High-voltage impact measuring device and method for power grid |
-
2016
- 2016-01-13 CN CN201620031111.3U patent/CN205539373U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105911463A (en) * | 2016-01-13 | 2016-08-31 | 武汉水院电气有限责任公司 | DC current-limiting breaker high-voltage heavy-current pulse impact test platform |
| CN105911463B (en) * | 2016-01-13 | 2018-12-14 | 武汉水院电气有限责任公司 | A kind of direct current current-limiting circuit breaker high-voltage great-current pulse shock test platform |
| CN110907790A (en) * | 2019-04-08 | 2020-03-24 | 国网江苏省电力有限公司电力科学研究院 | High-voltage high-power thyristor reverse recovery current test system and test method |
| CN111832961A (en) * | 2020-07-23 | 2020-10-27 | 河南省计量科学研究院 | High-voltage impact measuring device and method for power grid |
| CN111832961B (en) * | 2020-07-23 | 2023-04-28 | 河南省计量科学研究院 | High-voltage impact measuring device and method for power grid |
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