CN106093573A - Super, extra-high voltage direct-current transmission TCU converter valve components IGCT level impedance test system - Google Patents
Super, extra-high voltage direct-current transmission TCU converter valve components IGCT level impedance test system Download PDFInfo
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- CN106093573A CN106093573A CN201610369307.8A CN201610369307A CN106093573A CN 106093573 A CN106093573 A CN 106093573A CN 201610369307 A CN201610369307 A CN 201610369307A CN 106093573 A CN106093573 A CN 106093573A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/08—Measuring resistance by measuring both voltage and current
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Abstract
The present invention provides a kind of super, extra-high voltage direct-current transmission TCU converter valve components IGCT level impedance test system, including high frequency sinusoid generator, amplifying circuit, relay, voltage and current testing circuit and CPU, described high frequency sinusoid generator is connected with amplifying circuit, amplifying circuit output is connected with product to be tested after relay, voltage and current testing circuit is placed between amplifying circuit with relay and is connected with CPU, based on loop voltage, current detecting, and by CPU, data are processed calculating and realize the measurement of impedance；Solve damping circuit connection reliability and damping resistance, the test problems of Absorption Capacitance of IGCT level in high voltage direct current converter valve routine test.Processing data by CPU control, this test system bulk is little, is operated in low-voltage state, has the advantages such as safe and reliable, portable, efficient.
Description
Technical field
The present invention relates to surpass, extra-high voltage direct-current transmission converter valve electrical test technical field, super particularly to one, extra-high
Pressure direct current transportation TCU converter valve components IGCT level impedance test system.
Background technology
China's energy and load contrary distribution, " transferring electricity from the west to the east " becomes the inexorable trend promoting economic development.HVDC
Transmission of electricity becomes the important means of remote trans-regional electric energy conveying by plurality of advantages such as economy, interconnectivity, controllings.Brilliant lock
Pipe converter valve is the nucleus equipment of D.C. high voltage transmission, and converter valve is made up of some IGCT assemblies, each IGCT assembly bag
Including multiple IGCT level unit, IGCT level is as minimum basic unit, and every grade comprises IGCT, thyristor control unit
(thyristor control unit, TCU) and RC damping all pushes back road.It is reliable that IGCT level performance directly affects transmission system
Property.Normal for guaranteeing IGCT level electrical characteristic and function thereof, before DC transmission engineering puts into operation and during maintenance, need be to crystalline substance
Brake tube level impedance is tested.But, traditional method all uses circuit tester or LCR instrument to survey the most each device one by one
Amount, but this method takes time and effort, and need manual record data, have a strong impact on routine test and on-the-spot inspection before dispatching from the factory
The efficiency repaiied.Develop system gesture that is portable and that can be used for high voltage direct current transmission converter valve IGCT level testing impedance efficiently must
OK.
Summary of the invention
It is an object of the invention to provide a kind of based on super, the extra-high voltage direct-current transmission of peak detection technology under multi-frequency
TCU converter valve components IGCT level impedance test system.
In order to realize object above, the present invention is achieved by the following technical solutions:
Super, extra-high voltage direct-current transmission TCU converter valve components IGCT level impedance test system, occurs including high_frequency sine wave
Device, amplifying circuit, relay, voltage and current testing circuit and CPU, described high frequency sinusoid generator and amplifying circuit phase
Even, amplifying circuit output is connected with product to be tested after relay, and voltage and current testing circuit is placed in amplifying circuit and relay
It is connected between device and with CPU, based on loop voltage, current detecting, and by CPU, data is processed calculating and realize the survey of impedance
Amount.
Further, described high frequency sinusoid generator uses D/A converter and filter circuit to realize, defeated after amplified circuit
Go out voltage at more than 10V.
Further, described voltage and current testing circuit uses peak detection circuit to realize.
Further, the sine wave of described high frequency sinusoid generator output 10Hz-200kHz wide frequency ranges, passes through timesharing
Section output different frequency sinusoidal signal, detect the crest voltage under each respective frequencies and electric current carry out testing impedance, based under
Formula realizes the calculating of impedance:
Upeak(fi)=Ipeak(fi)*Z(fi)
Wherein, i=1,2...n, Upeak(fi) it is crest voltage, Ipeak(fi) it is peak point current, Z (fi) it is impedance, fiFor
Detection frequency.
Further, described CPU connects bin and USB interface, carries out storing and passing through USB interface by measured data
It is uploaded to host computer.
Further, described CPU is also associated with liquid crystal display and keyboard.
The invention provides a kind of based on super, the extra-high voltage direct-current transmission TCU converter valve of peak detection technology under multi-frequency
Assembly IGCT level impedance test system；Based on loop voltage, current detecting, by CPU, the process of data is calculated, thus real
The measurement of existing impedance.Solve IGCT level in high voltage direct current converter valve routine test damping circuit connection reliability and
Damping resistance, the test problems of Absorption Capacitance.
The beneficial effects of the present invention is:
1, the voltage and current at the method detection IGCT two ends of peakvalue's checking is used；
2, this detecting system small volume, by the detection mode of software and hardware combining, integrated level height, simple in construction, operation
Convenient；
3, power supply uses low-voltage altofrequency generator, and safety is high；
4, test frequency is adjustable by software, goes for the damping circuit of different DC engineering IGCT level.
Further, after the amplified circuit of described high frequency sinusoid generator, output voltage can improve inspection at more than 10V
Survey precision；Test frequency controls adjustable by CPLD.
Further, described voltage and current testing circuit uses peak detection circuit to realize, rather than general A/D adopts
Sample circuit, simplifies system design.
Further, measured data are stored and are uploaded to by USB interface host computer, convenient examination by described USB interface
Test personnel record and research.
Accompanying drawing explanation
Fig. 1 is super, extra-high voltage direct-current transmission TCU converter valve components IGCT level impedance test system structural principle block diagram；
Fig. 2 is Fig. 1 medium-high frequency forcing function generator structural principle block diagram.
Detailed description of the invention
The disclosure will be further described referring to the drawings below.Special declaration, description below is substantially
Arrive Macroscopical Explanation and the effect of example explanation, never the disclosure and application thereof or use are carried out any restriction.Unless additionally
Special instruction, otherwise, the parts illustrated in an embodiment and the positioned opposite and numerical expression of step and numerical value do not limit
The scope of the present disclosure processed.It addition, technology well known by persons skilled in the art, method and apparatus may not be discussed in detail, but
A part for description it is meant as in the case of Shi Dang.
The present invention will be further described in detail below in conjunction with the accompanying drawings.
In one embodiment, the invention discloses a kind of super, extra-high voltage direct-current transmission TCU converter valve components IGCT level
Impedance test system.
Fig. 1 is IGCT level impedance test system structural principle block diagram in high voltage direct current transmission converter valve, including high frequency just
String wave producer 1, amplifying circuit 2, relay 3, voltage and current testing circuit 4, CPU5 and bin 6, keyboard 7, liquid crystal
Show device 8 and USB interface 9.
High frequency sinusoid generator 1 is for providing the voltage signal of different frequency, and the damping circuit of test IGCT level is special
Property；
Amplifying circuit 2 is used for amplifying high frequency sinusoidal signal amplitude；
Relay 3 is as the electrical switch of test system；
Voltage and current testing circuit 4 is used for detecting IGCT level crest voltage, electric current, provides data for impedance computation；
CPU5 is used for signal measurement and control, refers specifically to crest voltage and the electric current of IGCT level；Measurement and detection,
Bin 6 is used for storing test data；
Keyboard 7 is for manually arranging test frequency；
Liquid crystal display 8 is used for showing result of the test；
USB interface 9 is for carrying out data transmission with host computer.
In this example, described high frequency sinusoid generator 1 uses high-speed d/a transducer 101 and adds filter circuit 102 in fact
Existing, the sine wave of 10Hz-200kHz wide frequency ranges can be exported, export the sinusoidal signal of different frequency at times.High frequency is just
String wave producer 1 is connected with amplifying circuit 2, and output voltage can improve accuracy of detection at more than 10V.
Amplifying circuit 2 exports and is connected with tested IGCT level test product after relay 3.
Voltage and current testing circuit 4 uses peak detection circuit to realize, and export high frequency sinusoid generator 1 is each
Under respective frequencies, crest voltage and electric current are tested, and realize the calculating of impedance based on following formula simultaneous:
Upeak (fi)=Ipeak (fi) * Z (fi)
Wherein, i=1,2...n, Upeak(fi) it is crest voltage, Ipeak(fi) it is peak point current, Z (fi) it is impedance, fiFor
Detection frequency.And, based on above-mentioned calculating, and binding isotherm value provides the failure state of each Resistor-Capacitor Unit.Voltage and current is examined
Slowdown monitoring circuit 4 is placed between amplifying circuit 2 and relay 3, and is connected with CPU5.
CPU5 carries out processing calculating, CPU5 and keyboard 7, liquid crystal display to the measurement data of voltage and current testing circuit 4
Device 8 and memorizer 6 all by its each interface be connected.
Measured data can be stored and pass through USB interface 9 and be uploaded to host computer, convenient examination by this test system
The present invention solves the resistance of IGCT level in super, extra-high voltage direct-current TCU construction package converter valve components routine test
Buddhist nun's return lead connection reliability and damping resistance, the test problems of Absorption Capacitance.Data, integrated level is processed by CPU control
Height, simple in construction, safe and reliable, easy to operate, test frequency is adjustable by software, goes for different DC engineering TCU
The damping circuit of construction package IGCT level.
Although example embodiment describes the disclosure, it should be appreciated that the disclosure is not limited to exemplary embodiments mentioned above.
It will be obvious to those skilled in the art that and can revise above-mentioned showing under conditions of without departing substantially from the scope of the present disclosure and spirit
Example embodiment.The scope of appended claim should be endowed the widest explanation, with comprise all such amendments and etc.
Same 26S Proteasome Structure and Function.
Claims (6)
1. surpass, extra-high voltage direct-current transmission TCU converter valve components IGCT level impedance test system, it is characterised in that: include high frequency
Sine-wave generator (1), amplifying circuit (2), relay (3), voltage and current testing circuit (4) and CPU (5), described high frequency
Sine-wave generator (1) is connected with amplifying circuit (2), and amplifying circuit (2) output is connected with product to be tested after relay (3),
Voltage and current testing circuit (4) is placed between amplifying circuit (2) with relay (3) and is connected with CPU (5), based on loop electricity
Pressure, current detecting, and by CPU (5), data are processed calculating and realize the measurement of impedance.
Super, extra-high voltage direct-current transmission TCU converter valve components IGCT level impedance test system the most according to claim 1,
It is characterized in that: described high frequency sinusoid generator (1) uses D/A converter (101) and filter circuit (102) to realize, through putting
Big circuit (2) output voltage afterwards is at more than 10V.
Super, extra-high voltage direct-current transmission TCU converter valve components IGCT level impedance test system the most according to claim 1,
It is characterized in that: described voltage and current testing circuit (4) uses peak detection circuit to realize.
Super, extra-high voltage direct-current transmission TCU converter valve components IGCT level impedance test system the most according to claim 1,
It is characterized in that: the sine wave of described high frequency sinusoid generator (1) output 10Hz-200kHz wide frequency ranges, pass through timesharing
Section output different frequency sinusoidal signal, detect the crest voltage under each respective frequencies and electric current carry out testing impedance, based under
Formula realizes the calculating of impedance:
Upeak(fi)=Ipeak(fi)*Z(fi)
Wherein, i=1,2...n, Upeak(fi) it is crest voltage, Ipeak(fi) it is peak point current, Z (fi) it is impedance, fiFor detection
Frequency.
Super, extra-high voltage direct-current transmission TCU converter valve components IGCT level impedance test system the most according to claim 1,
It is characterized in that: described CPU (5) connects bin (6) and USB interface (9), measured data is stored and passes through
USB interface (9) is uploaded to host computer.
Super, extra-high voltage direct-current transmission TCU converter valve components IGCT level impedance test system the most according to claim 1,
It is characterized in that: described CPU (5) is also associated with liquid crystal display (8) and keyboard (7).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610369307.8A CN106093573A (en) | 2016-05-30 | 2016-05-30 | Super, extra-high voltage direct-current transmission TCU converter valve components IGCT level impedance test system |
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| CN201610369307.8A CN106093573A (en) | 2016-05-30 | 2016-05-30 | Super, extra-high voltage direct-current transmission TCU converter valve components IGCT level impedance test system |
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| CN201610369307.8A Pending CN106093573A (en) | 2016-05-30 | 2016-05-30 | Super, extra-high voltage direct-current transmission TCU converter valve components IGCT level impedance test system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425723A (en) * | 2017-06-23 | 2017-12-01 | 华中科技大学 | A kind of high-voltage DC power supply of the wide scope continuously adjustabe based on microcontroller |
| CN107765097A (en) * | 2017-11-18 | 2018-03-06 | 国家电网公司 | Converter valve master is through-flow, and return contacts special test presss from both sides |
| CN108318744A (en) * | 2018-01-12 | 2018-07-24 | 许继电气股份有限公司 | A kind of converter valve thyristor level damping circuit parameter test device and method |
| CN108445293A (en) * | 2018-05-29 | 2018-08-24 | 合肥本源量子计算科技有限责任公司 | A kind of quantum chip port impedance test device and measurement method |
| CN109358597A (en) * | 2018-10-12 | 2019-02-19 | 南京南瑞继保电气有限公司 | Thyristor control unit protectiveness triggers the equivalent test device of low pressure and control method |
| CN109900980A (en) * | 2019-01-25 | 2019-06-18 | 国网四川省电力公司电力科学研究院 | A kind of converter valve test macro and its method based on high-voltage square-wave pulse excitation |
| CN111337751A (en) * | 2020-03-31 | 2020-06-26 | 国网安徽省电力有限公司电力科学研究院 | Converter station alternating current side impedance online test method |
| CN111929564A (en) * | 2020-08-11 | 2020-11-13 | 中国南方电网有限责任公司超高压输电公司广州局 | Method and device for measuring non-disconnection parameter of thyristor-level circuit core device of converter valve |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425723A (en) * | 2017-06-23 | 2017-12-01 | 华中科技大学 | A kind of high-voltage DC power supply of the wide scope continuously adjustabe based on microcontroller |
| CN107425723B (en) * | 2017-06-23 | 2019-07-23 | 华中科技大学 | A kind of high-voltage DC power supply that the wide scope based on microcontroller is continuously adjustable |
| CN107765097A (en) * | 2017-11-18 | 2018-03-06 | 国家电网公司 | Converter valve master is through-flow, and return contacts special test presss from both sides |
| CN107765097B (en) * | 2017-11-18 | 2020-04-07 | 国家电网公司 | Special test clamp for main through-flow loop connector of converter valve |
| CN108318744A (en) * | 2018-01-12 | 2018-07-24 | 许继电气股份有限公司 | A kind of converter valve thyristor level damping circuit parameter test device and method |
| CN108445293A (en) * | 2018-05-29 | 2018-08-24 | 合肥本源量子计算科技有限责任公司 | A kind of quantum chip port impedance test device and measurement method |
| CN109358597A (en) * | 2018-10-12 | 2019-02-19 | 南京南瑞继保电气有限公司 | Thyristor control unit protectiveness triggers the equivalent test device of low pressure and control method |
| CN109900980A (en) * | 2019-01-25 | 2019-06-18 | 国网四川省电力公司电力科学研究院 | A kind of converter valve test macro and its method based on high-voltage square-wave pulse excitation |
| CN109900980B (en) * | 2019-01-25 | 2021-02-19 | 国网四川省电力公司电力科学研究院 | Converter valve testing system based on high-voltage square wave pulse excitation and method thereof |
| CN111337751A (en) * | 2020-03-31 | 2020-06-26 | 国网安徽省电力有限公司电力科学研究院 | Converter station alternating current side impedance online test method |
| CN111337751B (en) * | 2020-03-31 | 2022-05-24 | 国网安徽省电力有限公司电力科学研究院 | Converter station alternating current side impedance online test method |
| CN111929564A (en) * | 2020-08-11 | 2020-11-13 | 中国南方电网有限责任公司超高压输电公司广州局 | Method and device for measuring non-disconnection parameter of thyristor-level circuit core device of converter valve |
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Application publication date: 20161109 |