CN1480737A - Integrated intelligent testing system for large power convertor assembly - Google Patents
Integrated intelligent testing system for large power convertor assembly Download PDFInfo
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- CN1480737A CN1480737A CNA031417442A CN03141744A CN1480737A CN 1480737 A CN1480737 A CN 1480737A CN A031417442 A CNA031417442 A CN A031417442A CN 03141744 A CN03141744 A CN 03141744A CN 1480737 A CN1480737 A CN 1480737A
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Abstract
The converter assembly to be tested is driven by quasi sine pulse current and voltage sources with large power and long cycle or frequency and amplitude modulation power supply in high frequency. Multiple sensors are configured with measuring range equal to test volume. Signals detected by sensors through data acquisition module are sent to industrial controller as main control part and DSP as auxiliary control part respectively. The industrial controller and DSP can be operated through keyboard of DSP, as well as keyboard and mouse of the industrial controller. Display and printing units are provided. Advantages of the invention are: volume of the testing power sources is reduced to 2 % of original one so as to lower power consumption greatly; multiple sensors make testing fast and in high accuracy; Integrated intelligent fault diagnosis function assures high maintenance efficiency.
Description
Technical field
The present invention relates to a kind of to the large scale industry converter plant test, the high-power current converting device comprehensive intelligent test macro of test, fault diagnosis, belong to electric and electronic technical field.
Background technology
This test macro is the pilot system for the periodic maintenance of large scale industry converter plant, use when maintaining, and is widely used in the converter plant of railway trunk line locomotive, motor-car, also is used for other large scale industry converter plant.In order to guarantee the safe operation of high-power current converting device, the converter plant in the use all will regularly carry out strict test, whether satisfies the safe operation regulation to determine equipment.At present, the test unit that adopts of most of enterprises is that the system of three transformers of---adjustable transformer---current transformer by the increase-volume transformer produces high-power electric current pulse.Device therefor is many, floor area is big, power consumption is big, poor working environment; By digital split-core type meter,, read numeral with snapping in corresponding tested branch road manually several times, because many branch road gradation operations, workload is big, and often the people makes that the angle difference of split-core type meter and circuit-under-test is excessive to be caused artificially than mistake, and needs longer test period.Because test process is manually to finish basically, so can't realize computer fault diagnosis; And test function is few, can not carry out pulse test, element characteristic test, bridge arm unit apolegamy test etc.
Summary of the invention
The objective of the invention is in order to have overcome the technological deficiency of existing current transformer proving installation, having proposed a kind of is the high-power converter comprehensive intelligent test macro of chief component by computing machine, DSP, the large power long cycle quasi sine FMAM pulse power, multisensor syste, intelligent diagnosis system.
Technical scheme of the present invention is: it comprises large power long cycle quasi sine pulse current source, large power long cycle quasi sine pulse voltage source and is used for the high frequency FMAM power supply of test pulse transformer, signals collecting, processing and the conversion portion formed by multisensor syste, data acquisition module, industrial computer data processing module, DSP data processing module, industrial computer observing and controlling part---main observing and controlling part, DSP observing and controlling part---standby observing and controlling part, the fault diagnosis part is printed and the display part; Tested converter plant is when different tests, drive by coupled large power long cycle quasi sine pulse current source and large power long cycle quasi sine pulse voltage source, in the tested loop of tested converter plant with a plurality of sensors of disposing of test volume equivalence, by sensor to signal deliver to respectively as the industrial computer of main observing and controlling part with as the DSP of standby observing and controlling part through data acquisition module, industrial computer and DSP are by DSP keyboard and the control of industrial computer keyboard and mouse, and both outputs are furnished with the demonstration printing equipment separately.
Adopt the high-power converter comprehensive intelligent test macro of such scheme, following advantage arranged:
1, owing to adopt the large power long cycle quasi sine pulse power, making the critical component of testing apparatus---the testing power supply volume is reduced to original 2 percent, and power consumption reduces greatly.
2, in the tested loop of tested converter plant with a plurality of sensors of disposing of test volume equivalence, repeatedly measuring than existing single-sensor has higher measuring accuracy and faster test speed, has reduced labour intensity.
3, have the intelligent trouble diagnosis function, can improve element utilization factor and maintenance efficiency greatly.
4, industrial computer and DSP data acquisition double processing technique.Improved equipment dependability greatly.
5, adopted tested current transformer all to press method of testing in the current-sharing of normal temperature, long period quasi sine great power pulse power source, for test has at room temperature obtained theoretical foundation, therefore short form test step greatly.
Description of drawings
Fig. 1 is a hardware system synoptic diagram of the present invention;
Fig. 2 is the power electronic element fault diagnosis principle figure of current stabilizing factor and current transformer;
Fig. 3 is for all pressing coefficient and fault diagnosis principle figure;
Fig. 4 is element characteristic test philosophy figure;
Fig. 5 is pulse transformer test synoptic diagram;
Fig. 6 is a large power long cycle quasi sine pulse current source conspectus;
Fig. 7 is a large power long cycle quasi sine pulse current source conspectus;
Fig. 8 software configuration synoptic diagram of the present invention;
Fig. 9 is a converter plant 2-6 brachium pontis current-sharing test synoptic diagram.
Embodiment
By Fig. 1, shown in Figure 8, it comprises large power long cycle quasi sine pulse current source and large power long cycle quasi sine pulse current source, signals collecting, processing and the conversion portion formed by multisensor syste, data acquisition module, industrial computer data processing module, DSP data processing module, industrial computer observing and controlling part---main observing and controlling part, DSP observing and controlling part---standby observing and controlling part, the fault diagnosis part is printed and the display part; Tested converter plant is driven by coupled large power long cycle quasi sine pulse current source and large power long cycle quasi sine pulse voltage source, in the tested loop of tested converter plant with a plurality of sensors of disposing of test volume equivalence, by sensor to signal deliver to respectively as the industrial computer of main observing and controlling part with as the DSP of standby observing and controlling part through data acquisition module, industrial computer and DSP are by DSP keyboard and the control of industrial computer keyboard and mouse, and both outputs are furnished with the demonstration printing equipment separately.System software package includes network transmitting software of the present invention, model and coefficient switching software, fault diagnosis software, testing software and system controlling software.
By shown in Figure 6, large power long cycle quasi sine pulse current source is characterized in that, it is connected with control thyristor 11 by frequency modulation control device 10, and high-power adjustable resistance 12 backs that are used for amplitude adjustment control of connecting again are connected with the former limit of current transformer winding 13.Current source output 14 be 300～5500A, the quasi sine current impulse of 1/1.5～1/3.5Hz.By shown in Figure 7, large power long cycle quasi sine FMAM pulse voltage source, it is connected with control thyristor 11 by frequency modulation control device 10, and high-power adjustable resistance 12 backs that are used for amplitude adjustment control in parallel again are connected with the former limit of current transformer winding 13.Voltage source output 15 be 200～3300V, the quasi sine potential pulse of 1/1.5～1/3.5Hz.
The system testing application example:
1, the power electronic element test of coefficient test and current transformer and fault diagnosis are as shown in Figure 2, the long period pulse current source is connected with tested current transformer among the figure, respectively have in 5 parallel branches of current transformer (article one of only drawing among the figure and the 5th) passive pincers type current sensor 1～5 pincers go into 1～5 branch road (among the figure symbol as "
" shown in), passive pincers type current sensor 1～5 is connected with the current signal conditioning plate, and the current signal conditioning plate links to each other with acquisition module, and acquisition module links to each other with computing machine.Double-click window icons, control system is starting current source and tested current transformer simultaneously, make each the branch road energising of tested current transformer, passive pincers type current sensor 1～5 each branch current of test and feed signals are sent into acquisition module to the current signal conditioning plate after the current signal conditioning plate is handled.The acquisition module feed signals is to computing machine, and by the COMPUTER CALCULATION current stabilizing factor, the qualified current-sharing end of test (EOT) of current stabilizing factor is promptly tested 1 and finished.If current stabilizing factor is defective, certainly exist " fault element ", must carry out intelligent trouble diagnosis, promptly be transformed into test 2.Test 2: on the basis of test 1, test each element forward conduction voltage drop of a certain branch road by the prompting of computing machine, with four voltage sensors, as 6 among Fig. 2,7,8,9 little square type box indicatings, be connected to four elements of " fault branch " respectively, sensor reaches the voltage signal conditioning plate with voltage signal, and the voltage signal conditioning plate reaches acquisition module with voltage signal again.Acquisition module reaches computing machine with voltage signal and by the computer diagnosis fault element.The result changes fault element according to computer diagnosis.Finish intelligent trouble diagnosis.
2, all press coefficient test and fault diagnosis
As shown in Figure 3,6,7,8,9 be the voltage sensor of element when reverse among the figure.The long period pulse voltage source oppositely is connected with current transformer, four reverse voltage sensor one ends are connected with four elements on the branch road respectively, the other end is connected with the voltage signal conditioning plate, and the voltage signal conditioning plate is connected with data acquisition module, and data acquisition module is connected with computing machine.Double-click the window respective icon, control system start-up control voltage source makes each branch road of tested current transformer add back-pressure.The reverse voltage sensor is delivered to the voltage signal conditioning plate with the signal of surveying, and the voltage signal conditioning plate is delivered to computing machine again.All press coefficient by COMPUTER CALCULATION, all press coefficient qualified, set up the test file file or reach intranet.All press coefficient defective, start the fault diagnosis test, system carries out fault diagnosis automatically, and provides fault element.
3, element characteristic test
As shown in Figure 4, current source is connected with detected element among the figure, and current sensor clamps into the testing element branch road, and the current signal conditioning plate is connected with current sensor, and acquisition module is connected with computing machine.The forward voltage drop sensor is connected in detected element simultaneously, and the forward voltage drop conditioning plate is connected with data acquisition module, and data acquisition module is connected with computing machine.Double-click window icons, control system is starting current source and detected element simultaneously, make the current transformer branch road energising of detected element, passive pincers type current sensor test to the current signal conditioning plate, is sent into acquisition module by element current and feed signals after the current signal conditioning plate is handled.The acquisition module feed signals is to computing machine.Voltage sensor testing element both end voltage simultaneously, and voltage signal delivered to data acquisition module, data acquisition module is delivered to computing machine with signal, computer printout, display element characteristics curve.Adjust current source current numerical value, can get the family curve under the different electric currents.
4, pulse transformer test
Shown in Fig. 1,5, by actual requirement, system is provided with a high frequency FMAM power supply, and this power supply links to each other with the measured pulse transformer.Light-coupled isolation links to each other with pulse transformer, and the high-frequency signal treatment circuit links to each other with light-coupled isolation, and data acquisition module is connected with the high-frequency signal treatment circuit, and computing machine links to each other with data acquisition module.Double-click window icons, control system starts the high-frequency test power supply simultaneously, and signal enters data acquisition module by Fig. 5, and data block is sent signal into computing machine.Computing machine is according to test signal diagnosis pulse transformer fault.
In sum, test function of the present invention is:
1, all pressure, all current test and calculating;
2, power electronic element characteristic test;
3, automatic diagnosis causes all pressure, the underproof element of current stabilizing factor;
4, trigger pulse transformer performance test;
5, switch contact drop test under the big electric current;
6, megger test.
The present invention is an example with model machine TGZ3A-3300/1500 converter plant 2-6 brachium pontis current-sharing test, in conjunction with Fig. 9 test process is done an explanation:
1, three-phase four-wire power A, B, C, N are connected with corresponding wiring terminal on the test macro switch board;
2, the end of power cable I, II is equipped with connection terminal, and the other end is equipped with the electric power clamp.Two lead-out terminals (positive pole and negative pole) of the large power long cycle quasi sine FMAM pulse current source in the test macro switch board link to each other with the connection terminal of I, II, and the electric power clamp directly is clipped in TGZ3A-3300/1500 converter plant 2-6 brachium pontis positive pole and negative pole.When changing the test brachium pontis, without demounting bolt and retorque, the position that need only change the electric power clamp gets final product, and line is very convenient.
3, the triggering socket 2 on the tested current transformer links to each other with FMAM supply socket 1 usefulness polycore cable III on the test macro switch board;
4, among the figure 1,2,3,4,5, totally 5 ends of measuring cables link to each other with pincers type current sensor 1～5, and the other end links to each other with 5 plugs respectively, forms 5 p-wires.Pincers type current sensor clamps 5 branch roads into the 2-6 brachium pontis, and 5 plugs insert 5 sockets measuring cashier's office in a shop;
5, open system computer, enter high-power current converting device integrated test system window, select the corresponding equipment model, double-click corresponding icon, system tests automatically, and shows immediately and the qualified result of printing test, simultaneously the result is sent into network;
If 6 test failures carry out fault diagnostic test.
Claims (3)
1, a kind of high-power current converting device comprehensive intelligent test macro, it is characterized in that, it comprises large power long cycle quasi sine pulse current source, large power long cycle quasi sine pulse voltage source and is used for the high frequency FMAM power supply of test pulse transformer, signals collecting, processing and the conversion portion formed by multisensor syste, data acquisition module, industrial computer data processing module, DSP data processing module, industrial computer observing and controlling part---main observing and controlling part, DSP observing and controlling part---standby observing and controlling part, the fault diagnosis part is printed and the display part; Tested converter plant is by coupled large power long cycle quasi sine pulse current source or large power long cycle quasi sine pulse voltage source or high frequency FMAM power drives; In the tested loop of tested converter plant with a plurality of sensors of disposing of test volume equivalence; By sensor to signal deliver to respectively as the industrial computer of main observing and controlling part with as the DSP of standby observing and controlling part through data acquisition module, industrial computer and DSP are by DSP keyboard and the control of industrial computer keyboard and mouse, both outputs are furnished with the demonstration printing equipment separately.
2, high-power current converting device comprehensive intelligent test macro according to claim 1, it is characterized in that, described large power long cycle quasi sine pulse current source, it is characterized in that, it is connected with control thyristor (2) by frequency modulation control device (1), and high-power adjustable resistance (3) back that is used for amplitude adjustment control of connecting again is connected with the former limit of current transformer winding (4).
3, high-power current converting device comprehensive intelligent test macro according to claim 1, it is characterized in that, described large power long cycle quasi sine pulse voltage source, it is characterized in that, it is connected with control thyristor (2) by frequency modulation control device (1), and high-power adjustable resistance (3) back that is used for amplitude adjustment control in parallel again is connected with the former limit of current transformer winding (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03141744 CN1238724C (en) | 2003-07-22 | 2003-07-22 | Integrated intelligent testing system for large power convertor assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03141744 CN1238724C (en) | 2003-07-22 | 2003-07-22 | Integrated intelligent testing system for large power convertor assembly |
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| Publication Number | Publication Date |
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| CN1480737A true CN1480737A (en) | 2004-03-10 |
| CN1238724C CN1238724C (en) | 2006-01-25 |
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| CN 03141744 Expired - Fee Related CN1238724C (en) | 2003-07-22 | 2003-07-22 | Integrated intelligent testing system for large power convertor assembly |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995557A (en) * | 2010-10-14 | 2011-03-30 | 中国科学院等离子体物理研究所 | Method for testing bearing capability of short trouble in high-power converter |
| CN102721864A (en) * | 2012-05-04 | 2012-10-10 | 北京工业大学 | System and method for time-staggered acquisition of high-frequency electric-arc signal |
| CN104133181A (en) * | 2014-07-24 | 2014-11-05 | 西安开天电力电子技术有限公司 | Test device and method for high-power current conversion system of locomotive |
| CN106707890A (en) * | 2017-02-17 | 2017-05-24 | 巴音郭楞职业技术学院 | Power transformer fault diagnosis system based on Internet of Things |
-
2003
- 2003-07-22 CN CN 03141744 patent/CN1238724C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995557A (en) * | 2010-10-14 | 2011-03-30 | 中国科学院等离子体物理研究所 | Method for testing bearing capability of short trouble in high-power converter |
| CN101995557B (en) * | 2010-10-14 | 2013-04-17 | 中国科学院等离子体物理研究所 | Method for testing bearing capability of short trouble in high-power converter |
| CN102721864A (en) * | 2012-05-04 | 2012-10-10 | 北京工业大学 | System and method for time-staggered acquisition of high-frequency electric-arc signal |
| CN104133181A (en) * | 2014-07-24 | 2014-11-05 | 西安开天电力电子技术有限公司 | Test device and method for high-power current conversion system of locomotive |
| CN106707890A (en) * | 2017-02-17 | 2017-05-24 | 巴音郭楞职业技术学院 | Power transformer fault diagnosis system based on Internet of Things |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1238724C (en) | 2006-01-25 |
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