CN103063987A - Test method of dry type smoothing reactor end-to-end medium-frequency oscillator capacitor discharge - Google Patents
Test method of dry type smoothing reactor end-to-end medium-frequency oscillator capacitor discharge Download PDFInfo
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- CN103063987A CN103063987A CN2012105654525A CN201210565452A CN103063987A CN 103063987 A CN103063987 A CN 103063987A CN 2012105654525 A CN2012105654525 A CN 2012105654525A CN 201210565452 A CN201210565452 A CN 201210565452A CN 103063987 A CN103063987 A CN 103063987A
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Abstract
The invention relates to a test method of dry type smoothing reactor end-to-end medium-frequency oscillator capacitor discharge and belongs to the technical field of electric reactor tests. The technical scheme includes that after connected with a diverter (5) in series, a smoothing reactor (3) to be tested is respectively connected with a lighting impulse generator (1), an impact load capacitor (2) and a resistance-capacitance divider (4) and is matched with a digital recording system, and involved test procedures and involved test wave shape records are carried out according to national standards. The test method of the dry type smoothing reactor end-to-end medium-frequency oscillator capacitor discharge has the advantages that conventional lighting impulse test devices including the lighting impulse generator and the like are adopted, through the reasonable coordination of parameter calculation and devices, test wave shapes meeting the requirements of the standards can be obtained, and dry type smoothing reactor end-to-end medium-frequency oscillator capacitor discharge tests with various voltage classes can be completed.
Description
Technical field
The present invention relates to the end-to-end medium-frequency oscillator capacitor discharge of a kind of dry smoothing reactor test method, belong to reactor experimental technique field.
Background technology
Smoothing reactor is the visual plant in the DC power transmission line, and it is installed in the harmonic wave that the converter valve back is used for suppressing output current, makes the direct current of output close to desirable direct current, thereby improves the transmission of electricity quality, reduces circuit and equipment loss.Smoothing reactor has two types of dry type and oil immersed types.According to GB " GB/T25092-2010 D.C. high voltage transmission dry-type hollow smoothing reactor " requirement, end-to-end medium-frequency oscillator capacitor discharge test is the type approval test project of smoothing reactor, in the product technology contract, sometimes classify again the routine test project as, require the shop test of all contract products all will carry out; The purpose of this test is to check the smoothing reactor insulation between coils, only upper terminal is carried out, and another terminal is by shunt ground connection.The oscillation frequency of the end-to-end medium-frequency oscillator capacitor discharge of standard-required test waveform is 300Hz--900Hz, and the duration is no less than 10ms, first amplitude of medium-frequency oscillator voltage is stipulated that by the user this amplitude maximum can not surpass the end-to-end switching impulse withstand voltage of smoothing reactor.Standard is also pointed out: medium-frequency oscillator capacitor discharge test with impulse capacitor by ball crack or isolating switch to the smoothing reactor discharge generation, actual oscillation frequency and duration are depended on capacity, test product inductance of impulse capacitor etc., stray capacitance in the test loop and lead-in inductance can cause overshoot at the wavefront rising edge, this overshoot voltage peak value should not be considered to the amplitude of medium-frequency oscillator, and too high overshoot voltage peak value can damage impulse capacitor.Based on above testing requirements, each device fabrication producer basis equipment situation separately adopts testing program separately to finish end-to-end medium-frequency oscillator capacitor discharge test; How can require to finish test according to GB, be the technical matters that this area needs to be resolved hurrily.
Summary of the invention
The purpose of this invention is to provide the end-to-end medium-frequency oscillator capacitor discharge of a kind of dry smoothing reactor test method, reasonable coordination by each device parameter in the circuit, can be met the test waveform of standard-required, waveform recording mode and test routine according to standard-required, finish the end-to-end medium-frequency oscillator capacitor discharge test of various electric pressure dry smoothing reactor, and effectively the overshoot amplitude of Control experiment voltage waveform solves the problems referred to above that background technology exists.
Technical scheme of the present invention is:
The end-to-end medium-frequency oscillator capacitor discharge of a kind of dry smoothing reactor test method behind the tested smoothing reactor serial connection shunt, connects respectively lightning impulse generator, impact load electric capacity and RC divider, and the coupling digital recording system;
The lightning impulse generator is plural serial stage or the use that is connected in parallel, and tests needs, wavefront resistance, wave rear resistance with different resistances by the connection combination change main capacitance of serial or parallel connection to satisfy;
Impact load electric capacity is multistage electric capacity stacking type, but by short circuit bar flexible capacitance;
RC divider has at least two and measures intrinsic standoff ratio to satisfy the measurement needs of different tests voltage;
Shunt is noninductive resistance, has different resistances;
Digital recording system has two recording channels at least, and can according to criterion calculation voltage peak and waveform parameter, carry out parameter setting greater than 10ms writing time;
Test comprises following steps:
1.According to the oscillation frequency (300Hz--900Hz) of the test waveform of standard-required and the inductance value L of tested smoothing reactor, calculate the main capacitance C of lightning impulse generator, computing formula C=1/ ω
2L;
2. determine the progression of lightning impulse generator serial or parallel connection according to surge generator main capacitance C, lightning impulse generator level electric capacity, step voltage and the test specimen trial voltage value calculated, and be equipped with wavefront resistance, the wave rear resistance of suitable resistance;
3.According to the RC divider measuring voltage ratio of trial voltage value selection coupling, under the trial voltage that reduces, adjust wavefront resistance, wave rear resistance, load capacity value and shunt resistance value, until waveform parameter meets the demands;
4.After test waveform meets the demands, finish product testing according to the GB test routine.
Tested smoothing reactor is connected with RC divider with serial connection shunt, lightning impulse generator, impact load electric capacity and is connected, and adopts the cross section to be not less than 2.5mm
2Copper conductor carry out connection.
The test routine that the present invention relates to carries out according to national standard; The test waveform record that relates to carries out according to national standard.
Good effect of the present invention: utilize the conventional lightning impulse test equipment such as lightning impulse generator, reasonable coordination by calculation of parameter and equipment, can be met the test waveform of standard-required, finish the end-to-end medium-frequency oscillator capacitor discharge test of various electric pressure dry smoothing reactor.
Description of drawings
Fig. 1 is embodiment of the invention connection synoptic diagram;
Among the figure: lightning impulse generator 1, impact load electric capacity 2, tested smoothing reactor 3, RC divider 4, shunt 5.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described by embodiment.
The end-to-end medium-frequency oscillator capacitor discharge of a kind of dry smoothing reactor test method behind the tested smoothing reactor 3 serial connection shunts 5, connects respectively lightning impulse generator 1, impact load electric capacity 2 and RC divider 4, and the coupling digital recording system;
The lightning impulse generator is plural serial stage or the use that is connected in parallel, and tests needs, wavefront resistance, wave rear resistance with different resistances by the connection combination change main capacitance of serial or parallel connection to satisfy;
Impact load electric capacity is multistage electric capacity stacking type, but by short circuit bar flexible capacitance;
RC divider has at least two and measures intrinsic standoff ratio to satisfy the measurement needs of different tests voltage;
Shunt is noninductive resistance, has different resistances;
Digital recording system has two recording channels at least, and can according to criterion calculation voltage peak and waveform parameter, carry out parameter setting greater than 10ms writing time;
Test comprises following steps:
1.According to the oscillation frequency (300Hz--900Hz) of the test waveform of standard-required and the inductance value L of tested smoothing reactor, calculate the main capacitance C of lightning impulse generator, computing formula C=1/ ω
2L;
2. determine the progression of lightning impulse generator serial or parallel connection according to surge generator main capacitance C, lightning impulse generator level electric capacity, step voltage and the test specimen trial voltage value calculated, and be equipped with wavefront resistance, the wave rear resistance of suitable resistance;
3.According to the RC divider measuring voltage ratio of trial voltage value selection coupling, under the trial voltage that reduces, adjust wavefront resistance, wave rear resistance, load capacity value and shunt resistance value, until waveform parameter meets the demands;
4.After test waveform meets the demands, finish product testing according to the GB test routine.
Tested smoothing reactor is connected with RC divider with serial connection shunt, lightning impulse generator, impact load electric capacity and is connected, and adopts the cross section to be not less than 2.5mm
2Copper conductor carry out connection.
The test routine that the present invention relates to carries out according to national standard; The test waveform record that relates to carries out according to national standard.
Lightning impulse generator operating impulse voltage level should be able to satisfy the trial voltage requirement and have enough nargin; Impact load electric capacity operating impulse voltage level should be able to satisfy the trial voltage requirement; RC divider operating impulse voltage level also will satisfy the trial voltage requirement.
Claims (2)
1. the end-to-end medium-frequency oscillator capacitor discharge of dry smoothing reactor test method, after it is characterized in that tested smoothing reactor (3) serial connection shunt (5), connect respectively lightning impulse generator (1), impact load electric capacity (2) and RC divider (4), and the coupling digital recording system;
The lightning impulse generator is plural serial stage or the use that is connected in parallel, and tests needs, wavefront resistance, wave rear resistance with different resistances by the connection combination change main capacitance of serial or parallel connection to satisfy;
Impact load electric capacity is multistage electric capacity stacking type, but by short circuit bar flexible capacitance;
RC divider has at least two and measures intrinsic standoff ratio to satisfy the measurement needs of different tests voltage;
Shunt is noninductive resistance, has different resistances;
Digital recording system has two recording channels at least, and can according to criterion calculation voltage peak and waveform parameter, carry out parameter setting greater than 10ms writing time;
Test comprises following steps:
1.According to the oscillation frequency 300Hz--900Hz of the test waveform of standard-required and the inductance value L of tested smoothing reactor, calculate the main capacitance C of lightning impulse generator, computing formula C=1/ ω
2L;
2. determine the progression of lightning impulse generator serial or parallel connection according to surge generator main capacitance C, lightning impulse generator level electric capacity, step voltage and the test specimen trial voltage value calculated, and be equipped with wavefront resistance, the wave rear resistance of suitable resistance;
3.According to the RC divider measuring voltage ratio of trial voltage value selection coupling, under the trial voltage that reduces, adjust wavefront resistance, wave rear resistance, load capacity value and shunt resistance value, until waveform parameter meets the demands;
4.After test waveform meets the demands, finish product testing according to the GB test routine.
2. the end-to-end medium-frequency oscillator capacitor discharge of a kind of dry smoothing reactor according to claim 1 test method, it is characterized in that tested smoothing reactor is connected with RC divider with serial connection shunt, lightning impulse generator, impact load electric capacity is connected, and adopts the cross section to be not less than 2.5mm
2Copper conductor carry out connection.
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| CN201210565452.5A CN103063987B (en) | 2012-12-24 | 2012-12-24 | Test method of dry type smoothing reactor end-to-end medium-frequency oscillator capacitor discharge |
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| CN103063987B CN103063987B (en) | 2015-01-07 |
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Cited By (5)
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| CN104793027A (en) * | 2015-04-27 | 2015-07-22 | 四川省绵竹西南电工设备有限责任公司 | Multi-range adjustable equivalent load for experiments |
| CN105223532A (en) * | 2015-10-27 | 2016-01-06 | 西安交通大学 | A kind of method for diagnosing faults of dry reactor higher-order of oscillation impulse voltage withstand test |
| CN105223484A (en) * | 2015-10-27 | 2016-01-06 | 西安交通大学 | A kind of dry reactor higher-order of oscillation impulse voltage endurance test method and system thereof |
| CN108957307A (en) * | 2018-07-12 | 2018-12-07 | 国网湖北省电力有限公司电力科学研究院 | A kind of direct current change-over switch parameter of oscillation measurement method based on many reference amounts |
| CN116338362A (en) * | 2023-05-19 | 2023-06-27 | 合肥航太电物理技术有限公司 | Double-exponential lightning current waveform generator parameter identification equipment and identification method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793027A (en) * | 2015-04-27 | 2015-07-22 | 四川省绵竹西南电工设备有限责任公司 | Multi-range adjustable equivalent load for experiments |
| CN105223532A (en) * | 2015-10-27 | 2016-01-06 | 西安交通大学 | A kind of method for diagnosing faults of dry reactor higher-order of oscillation impulse voltage withstand test |
| CN105223484A (en) * | 2015-10-27 | 2016-01-06 | 西安交通大学 | A kind of dry reactor higher-order of oscillation impulse voltage endurance test method and system thereof |
| CN105223532B (en) * | 2015-10-27 | 2018-06-29 | 西安交通大学 | A kind of method for diagnosing faults of dry reactor higher-order of oscillation impulse withstand voltage experiment |
| CN108957307A (en) * | 2018-07-12 | 2018-12-07 | 国网湖北省电力有限公司电力科学研究院 | A kind of direct current change-over switch parameter of oscillation measurement method based on many reference amounts |
| CN108957307B (en) * | 2018-07-12 | 2023-04-28 | 国网湖北省电力有限公司电力科学研究院 | DC change-over switch oscillation parameter measurement method based on multiple parameters |
| CN116338362A (en) * | 2023-05-19 | 2023-06-27 | 合肥航太电物理技术有限公司 | Double-exponential lightning current waveform generator parameter identification equipment and identification method |
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| CN103063987B (en) | 2015-01-07 |
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