CN104090191A - Loading testing device and method used for frequency converter - Google Patents
Loading testing device and method used for frequency converter Download PDFInfo
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- CN104090191A CN104090191A CN201410353531.9A CN201410353531A CN104090191A CN 104090191 A CN104090191 A CN 104090191A CN 201410353531 A CN201410353531 A CN 201410353531A CN 104090191 A CN104090191 A CN 104090191A
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Abstract
The invention discloses a loading testing device and method used for a frequency converter. The loading testing device comprises an induction voltage regulator, a power supply operation cabinet, the frequency converter to be tested, a load operation cabinet, a load-side part, a remote control cabinet, a power-side part, a first control isolation module, a first feedback isolation module, a second control isolation module, a second feedback isolation module and a third control isolation module, wherein the induction voltage regulator, the power supply operation cabinet, the frequency converter to be tested, the load operation cabinet, the load-side part, the remote control cabinet, the power-side part, the first control isolation module, the first feedback isolation module, the second control isolation module, the second feedback isolation module and the third control isolation module are mutually connected. The loading testing device is simple in structure, the testing process is easy to control, increasing and decreasing of power supply voltage, selection of power supply circuits and selection of load circuits are controlled in an isolation mode by the remote control cabinet, the safety of persons in the high-voltage testing environment is sufficiently guaranteed in the remote and isolation control mode, and the loading testing device and method have the good application prospect.
Description
Technical field
The present invention relates to a kind of loading test device for frequency converter and method, belong to converter technology field.
Background technology
Increasingly mature along with subjects such as computer science and technology, Power Electronic Technique and automated control technologies, gas drive technology has carried out an earth-shaking variation.AC frequency conversion transmission in modern age is through the development of decades, and it has become the leading of electric drive technology.In the middle of motor speed governing system, what serviceability was best, work efficiency is the highest is frequency conversion speed-adjusting system, thus, be in the research of current electric drive system, to have actual application value most, work the most widely to the research of motor frequency change speed governing, frequency converter industry has very huge potentiality.Converter technology industry comprises all industries relevant to converter technology, comprises manufacture practical application, alternating-current electric transmission and the system control technology etc. of the production power electronic devices that drives Protective IC.Along with mine-used frequency-converter applying in bargh, in order to ensure the safe reliability of its application, the quality of frequency converter self has also been had to higher requirement, therefore, at frequency converter in the time dispatching from the factory, must carry out detailed performance test to it, after dispatching from the factory, frequency converter can normally use ensureing, load particularly important that test also becomes, can ensure that frequency converter loads quality and the efficiency of test, be directly connected to the cost of enterprise product operation, how to complete efficiently the loading test to frequency converter, so make a set of loading test device, performance test as frequency converter is essential.
Summary of the invention
The object of the invention is to complete efficiently the loading test to frequency converter, to guarantee that frequency converter is in the time dispatching from the factory, can normally use.Loading test device for frequency converter of the present invention and method, simple in structure, load test process easy to control, improve the efficiency that loads test, promoted the frequency converter quality of dispatching from the factory simultaneously, have a good application prospect.
In order to achieve the above object, the technical solution used in the present invention is:
For a loading test device for frequency converter, it is characterized in that: comprise that induction voltage regulator, powered operation cabinet, frequency converter to be measured, load operation cabinet, load-side part, long-distance control cabinet, mains side part, first are controlled isolation module, the first feedback isolation module, second is controlled isolation module, the second feedback isolation module and the 3rd control isolation module;
The power output end of described mains side part is connected with the power input of induction voltage regulator, the three-phase voltage input end of described powered operation cabinet is connected with the three-phase voltage output terminal of induction voltage regulator, the power input of described frequency converter to be measured is connected with the three-phase voltage output terminal of powered operation cabinet, the power output end of described frequency converter to be measured is connected with the three-phase voltage input end of load operation cabinet, the power output end external load side part of described load operation cabinet;
Described long-distance control cabinet is connected with powered operation cabinet by the first feedback isolation module, and described powered operation cabinet is connected with long-distance control cabinet by the first control isolation module;
Described long-distance control cabinet is also connected with load operation cabinet by the second feedback isolation module, and described load operation cabinet is connected with long-distance control cabinet by the second control isolation module;
Described long-distance control cabinet is also controlled isolation module by the 3rd and is connected with induction voltage regulator;
Described long-distance control cabinet is realized respectively the isolated controlling to powered operation cabinet, load operation cabinet and induction voltage regulator by the first control isolation module, the second isolated controlling module, the 3rd isolated controlling module, for adjusting, supply line's test and the load testing of test voltage;
Each phase voltage of described powered operation cabinet and load operation cabinet, the measurement of electric current are to measure in real time to long-distance control cabinet by the first feedback isolation module and the second feedback isolation module.
Aforesaid a kind of loading test device for frequency converter, is characterized in that: described mains side part comprises 1600 type omnipotent breakers, and described 1600 type omnipotent breakers are for external three-phase alternating current electrical network.
Aforesaid a kind of loading test device for frequency converter, it is characterized in that: described powered operation cabinet comprises that two groups of vacuum contactors that are connected, 800 type universal circuit breakers form, be provided with two three-phase power lines, be respectively mains supply line and stand-by power supply circuit.
Aforesaid a kind of loading test device for frequency converter, is characterized in that: described load operation cabinet is that two groups of vacuum contactors that are connected, 630 type universal circuit breakers form, and forms two threephase load circuits, is respectively frequency converter band and carries choice for use.
Aforesaid a kind of loading test device for frequency converter, is characterized in that: described induction voltage regulator is adjustable output voltage transformer.
Aforesaid a kind of loading test device for frequency converter, it is characterized in that: described long-distance control cabinet comprises 12 LED charactron instrument, be used for the input and output current/voltage of the each phase that shows frequency converter, also comprise inching button, scram button and three-postion switch that running LED, breaker open operation close a floodgate.
Aforesaid a kind of loading test device for frequency converter, is characterized in that: described the first control isolation module, second is controlled isolation module, the 3rd control isolation module is to isolate the electrical connection between long-distance control cabinet and operation cabinet by the mode of two-stage electromagnetic formula relay.
Aforesaid a kind of loading test device for frequency converter, it is characterized in that: described load-side part is divided into two kinds of simulaed inductance load and motor loads, described simulaed inductance, load are 500A inductance, described motor load is phase asynchronous alternating current generator, institute's motor load loads the load motor of test as frequency converter to be measured, described phase asynchronous alternating current generator is equipped with alternating current asynchronous to dragging motor.
The method of testing of a kind of loading test device for frequency converter based on above-mentioned, is characterized in that: comprises the following steps,
Step (1), presses the pressure regulation button of operated from a distance cabinet, controls the output voltage of isolation module control induction voltage regulator by the 3rd, and operating voltage is provided to powered operation cabinet;
Step (2), powered operation cabinet feeds back the test voltage that is loaded into frequency converter to be measured to operated from a distance cabinet by the first feedback isolation module;
Step (3), according to operated from a distance cabinet, the test voltage that regulates feedback to be loaded into frequency converter to be measured arrives suitable test voltage;
Step (4), stir operated from a distance cabinet for three-postion switch corresponding to electric contactor, select the supply line of powered operation cabinet by the first isolated controlling module;
Step (5), presses the power supply switch knob of operated from a distance cabinet, the input power supply by the isolating switch in the first isolated controlling module combined floodgate powered operation cabinet to frequency converter to be measured;
Step (6), self-inspection after frequency converter start to be measured, if break down, powered operation cabinet disconnects test power supply automatically, to protect frequency converter to be measured and measurement circuit;
Step (7), after frequency converter self-inspection to be measured, stirs the three-postion switch of the load contactor of long-distance control cabinet, selects by the loaded line of the second control isolation module control load operation cabinet;
Step (8), by the isolating switch in operated from a distance cabinet combined floodgate load operation cabinet, realizes the run with load of frequency converter to be measured, goes wrong if band carries, and load operation cabinet can automatic disconnecting consumers circuit, to protect frequency converter to be measured and load-side part.
The invention has the beneficial effects as follows: the loading test device for frequency converter of the present invention and method, loading test device is simple in structure, method of testing process is easy to control, improve the efficiency of test, further strengthened the safety and reliability that loads test, the loading test of the mode Long-distance Control frequency converter by isolated controlling and isolation feedback simultaneously, has reduced personnel and enters high pressure and load the empirical risk of test section, also there are some a little
(1), by long-range and isolation control mode, fully ensured the safety of personnel under Hi-pot test environment;
(2) isolation adopts two-stage electromagnetic formula Control structure, completes the control to the vacuum contactor in operation cabinet, and to reach the object of long-distance control cabinet isolated controlling, which has simple in structure, easy to operate, easy to implement;
(3) feedback isolation adopts Hall-type magnetic induction sensor structure, the magnetic field intensity of utilizing testing high voltage circuit to produce is measured its electrical specification indirectly, complete the feedback of the output of powered operation cabinet and load operation cabinet input voltage and input current is measured, taking magnetic field as indirectly having measured isolation measurement, and easy to implement;
(4) frequency converter to be measured loads in the front and back structure of test; powered operation cabinet and load operation cabinet are added; can load voltage and the load tested to frequency converter by two operation cabinets and accomplish Long-distance Control selection; and add omnipotent breaker in operation in cabinet, measurement circuit overload, under-voltage, short circuit etc. have been had to good protective effect.
Brief description of the drawings
Fig. 1 is the system chart of the loading test device for frequency converter of the present invention.
Embodiment
Below in conjunction with Figure of description, the invention will be further described.Following examples are only for technical scheme of the present invention is more clearly described, and can not limit the scope of the invention with this.
As shown in Figure 1, loading test device for frequency converter of the present invention, comprises induction voltage regulator 1, powered operation cabinet 2, frequency converter to be measured 3, load operation cabinet 4, load-side part 5, long-distance control cabinet 6, mains side part 7, the first control isolation module 8, the first feedback isolation module 9, the second control isolation module 10, the second feedback isolation module 11 and the 3rd control isolation module 12;
The power output end of described mains side part 7 is connected with the power input of induction voltage regulator 1, the three-phase voltage input end of described powered operation cabinet 2 is connected with the three-phase voltage output terminal of induction voltage regulator 1, the power input of described frequency converter to be measured 3 is connected with the three-phase voltage output terminal of powered operation cabinet 2, the power output end of frequency converter 3 to be measured is connected with the three-phase voltage input end of load operation cabinet 4, the power output end external load side part 5 of described load operation cabinet 4;
Described long-distance control cabinet 6 is connected with powered operation cabinet 2 by the first feedback isolation module 9, and powered operation cabinet 2 is connected with long-distance control cabinet 6 by the first control isolation module 8;
Described long-distance control cabinet 6 is also connected with load operation cabinet 4 by the second feedback isolation module 11, and load operation cabinet 4 is connected with long-distance control cabinet 6 by the second control isolation module 10;
Described long-distance control cabinet 6 is also controlled isolation module 12 by the 3rd and is connected with induction voltage regulator 1;
Described long-distance control cabinet 6 is realized respectively the isolated controlling to powered operation cabinet 2, load operation cabinet 4 and induction voltage regulator 1 by the first control isolation module 8, the second isolated controlling module 10, the 3rd isolated controlling module 12, for adjusting, supply line's test and the load testing of test voltage;
Each phase voltage of described powered operation cabinet 2 and load operation cabinet 4, the measurement of electric current are to measure in real time to long-distance control cabinet 6 by the first feedback isolation module 9 and the second feedback isolation module 11.
Described mains side part 7 comprises 1600 type omnipotent breakers; 1600 type omnipotent breakers are for external three-phase alternating current electrical network 380V electrical network; 1600 type omnipotent breakers, to reach the real-time guard of the problems such as may occur electrical network and load under-voltage, overload, short circuit.
Described powered operation cabinet 2 comprises that two groups of vacuum contactors that are connected, 800 type universal circuit breakers form; be provided with two three-phase power lines; be respectively mains supply line and stand-by power supply circuit; article two, master spare circuit; can complete by the isolated operation of operated from a distance cabinet the switching of supply line; wherein 800 type universal circuit breakers, also can realize the protection to power supply test safety.
Described load operation cabinet 4 is that two groups of vacuum contactors that are connected, 630 type universal circuit breakers form, and forms two threephase load circuits, is respectively frequency converter band and carries choice for use, and wherein 630 type universal circuit breakers, also can realize the protection to load testing safety.
Described induction voltage regulator 1 is adjustable output voltage transformer, its structure is the size that regulation and control motor changes secondary coil, to reach the object to output voltage buck, by operated from a distance cabinet inching button, isolated controlling regulates motor, realizes boosting to 380V electrical network.
Described long-distance control cabinet 6 comprises the input and output current/voltage that shows each phase of frequency converter by 12 LED charactron instrument.And (6 is green 3 red to be furnished with 9 running LEDs, green expression moved, red expression disconnects), the inching button that 5 breaker open operations of 10 Long-distance Control close a floodgate, 1 scram button, 2 three-postion switch (are selected for the supply line of selecting frequency converter for one, one for selecting load), the elementary underpower relay of three-postion switch control in long-distance control cabinet 6, primary relay obtains power relay in electric rear control rear class, to realize, vacuum contactor in operation cabinet is opened and disconnected control.
It is to isolate the electrical connection between long-distance control cabinet and operation cabinet by the mode of two-stage electromagnetic formula relay that described the first control isolation module 8, the second control isolation module 10, the 3rd are controlled isolation module 12.
Described load-side part 5 is divided into two kinds of simulaed inductance load and motor loads, described simulaed inductance, load are 500A inductance, described motor load is phase asynchronous alternating current generator, institute's motor load loads the load motor of test as frequency converter to be measured (3), described phase asynchronous alternating current generator is equipped with alternating current asynchronous to dragging motor.
The method of testing of the loading test device based on for frequency converter, comprises the following steps,
Step (1), presses the pressure regulation button of operated from a distance cabinet 6, controls isolation module 12 and controls the output voltage of induction voltage regulator 1, and operating voltage is provided to powered operation cabinet 2 by the 3rd;
Step (2), powered operation cabinet 2 feeds back the test voltage that is loaded into frequency converter 3 to be measured to operated from a distance cabinet 6 by the first feedback isolation module 9;
Step (3), according to operated from a distance cabinet 6, the test voltage that regulates feedback to be loaded into frequency converter 3 to be measured arrives suitable test voltage;
Step (4), stir operated from a distance cabinet 6 for three-postion switch corresponding to electric contactor, select the supply line of powered operation cabinet 2 by the first isolated controlling module 8;
Step (5), presses the power supply switch knob of operated from a distance cabinet 6, the input power supply by the isolating switch in the first isolated controlling module 8 combined floodgate powered operation cabinets 2 to frequency converter 3 to be measured;
Step (6), self-inspection after frequency converter 3 starts to be measured, if break down, powered operation cabinet 2 disconnects test power supply automatically, to protect frequency converter 3 to be measured and measurement circuit;
Step (7), after frequency converter 3 self-inspections to be measured, stirs the three-postion switch of the load contactor of long-distance control cabinet 6, selects by the loaded line of the second control isolation module 10 control load operation cabinets 4;
Step (8); by the isolating switch in operated from a distance cabinet 6 combined floodgate load operation cabinets 4, realize the run with load of frequency converter 3 to be measured, if carrying, band goes wrong; the automatic disconnecting consumers circuit of load operation cabinet 4 meeting, to protect frequency converter 3 to be measured and load-side part 5.
In sum, frequency converter loading test device is simple in structure, method of testing process is easy to control, improve the efficiency of test, further strengthen the safety and reliability that loads test, the loading test of the mode Long-distance Control frequency converter by isolated controlling and isolation feedback simultaneously, has reduced personnel and enters high pressure and load the empirical risk of test section.
More than show and described ultimate principle of the present invention, principal character and advantage.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and instructions, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (9)
1. for a loading test device for frequency converter, it is characterized in that: comprise that induction voltage regulator (1), powered operation cabinet (2), frequency converter to be measured (3), load operation cabinet (4), load-side part (5), long-distance control cabinet (6), mains side part (7), the first control isolation module (8), the first feedback isolation module (9), second are controlled isolation module (10), the second feedback isolation module (11) and the 3rd is controlled isolation module (12);
The power output end of described mains side part (7) is connected with the power input of induction voltage regulator (1), the three-phase voltage input end of described powered operation cabinet (2) is connected with the three-phase voltage output terminal of induction voltage regulator (1), the power input of described frequency converter to be measured (3) is connected with the three-phase voltage output terminal of powered operation cabinet (2), the power output end of described frequency converter to be measured (3) is connected with the three-phase voltage input end of load operation cabinet (4), the power output end external load side part (5) of described load operation cabinet (4),
Described long-distance control cabinet (6) is connected with powered operation cabinet (2) by the first feedback isolation module (9), and described powered operation cabinet (2) is controlled isolation module (8) by first and is connected with long-distance control cabinet (6);
Described long-distance control cabinet (6) is also connected with load operation cabinet (4) by the second feedback isolation module (11), and described load operation cabinet (4) is controlled isolation module (10) by second and is connected with long-distance control cabinet (6);
Described long-distance control cabinet (6) is also controlled isolation module (12) by the 3rd and is connected with induction voltage regulator (1);
Described long-distance control cabinet (6) is realized respectively the isolated controlling to powered operation cabinet (2), load operation cabinet (4) and induction voltage regulator (1) by the first control isolation module (8), the second isolated controlling module (10), the 3rd isolated controlling module (12), for adjusting, supply line's test and the load testing of test voltage;
Each phase voltage of described powered operation cabinet (2) and load operation cabinet (4), the measurement of electric current are to measure in real time to long-distance control cabinet (6) by the first feedback isolation module (9) and the second feedback isolation module (11).
2. a kind of loading test device for frequency converter according to claim 1, is characterized in that: described mains side part (7) comprises 1600 type omnipotent breakers, and described 1600 type omnipotent breakers are for external three-phase alternating current electrical network.
3. a kind of loading test device for frequency converter according to claim 1, it is characterized in that: described powered operation cabinet (2) comprises that two groups of vacuum contactors that are connected, 800 type universal circuit breakers form, be provided with two three-phase power lines, be respectively mains supply line and stand-by power supply circuit.
4. a kind of loading test device for frequency converter according to claim 1, it is characterized in that: described load operation cabinet (4) is that two groups of vacuum contactors that are connected, 630 type universal circuit breakers form, form two threephase load circuits, be respectively frequency converter band and carry choice for use.
5. a kind of loading test device for frequency converter according to claim 1, is characterized in that:
Described induction voltage regulator (1) is adjustable output voltage transformer.
6. a kind of loading test device for frequency converter according to claim 1, it is characterized in that: described long-distance control cabinet (6) comprises 12 LED charactron instrument, be used for the input and output current/voltage of the each phase that shows frequency converter, also comprise inching button, scram button and three-postion switch that running LED, breaker open operation close a floodgate.
7. a kind of loading test device for frequency converter according to claim 1, is characterized in that: described the first control isolation module (8), second is controlled isolation module (10), the 3rd control isolation module (12) is to isolate the electrical connection between long-distance control cabinet and operation cabinet by the mode of two-stage electromagnetic formula relay.
8. a kind of loading test device for frequency converter according to claim 1, it is characterized in that: described load-side part (5) is divided into two kinds of simulaed inductance load and motor loads, described simulaed inductance, load are 500A inductance, described motor load is phase asynchronous alternating current generator, institute's motor load loads the load motor of test as frequency converter to be measured (3), described phase asynchronous alternating current generator is equipped with alternating current asynchronous to dragging motor.
9. the method for testing based on a kind of loading test device for frequency converter claimed in claim 1, is characterized in that: comprises the following steps,
Step (1), press the pressure regulation button of operated from a distance cabinet (6), control isolation module (12) by the 3rd and control the output voltage of induction voltage regulator (1), and operating voltage is provided to powered operation cabinet (2);
Step (2), powered operation cabinet (2) feeds back the test voltage that is loaded into frequency converter to be measured (3) to operated from a distance cabinet (6) by the first feedback isolation module (9);
Step (3), according to operated from a distance cabinet (6), the test voltage that regulates feedback to be loaded into frequency converter to be measured (3) arrives suitable test voltage;
Step (4), stir operated from a distance cabinet (6) for three-postion switch corresponding to electric contactor, select the supply line of powered operation cabinet (2) by the first isolated controlling module (8);
Step (5), press the power supply switch knob of operated from a distance cabinet (6), the input power supply by the isolating switch in the first isolated controlling module (8) combined floodgate powered operation cabinet (2) to frequency converter to be measured (3);
Step (6), self-inspection after frequency converter to be measured (3) start, if break down, powered operation cabinet (2) disconnects test power supply automatically, to protect frequency converter to be measured (3) and measurement circuit;
Step (7), after frequency converter to be measured (3) self-inspection, (three-postion switch of 6 load contactor, selects by the loaded line of the second control isolation module (10) control load operation cabinet (4) to stir long-distance control cabinet;
Step (8); by the isolating switch in operated from a distance cabinet (6) combined floodgate load operation cabinet (4); realize the run with load of frequency converter to be measured (3); if band carries and goes wrong; the automatic disconnecting consumers circuit of load operation cabinet 4 meeting, to protect frequency converter to be measured (3) and load-side part (5).
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| CN201410353531.9A CN104090191B (en) | 2014-07-23 | 2014-07-23 | A kind of loading test device for converter and method |
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| CN201410353531.9A CN104090191B (en) | 2014-07-23 | 2014-07-23 | A kind of loading test device for converter and method |
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| CN106443280A (en) * | 2016-11-21 | 2017-02-22 | 中车兰州机车有限公司 | Traction frequency convertor testing device |
| CN107748339A (en) * | 2017-11-29 | 2018-03-02 | 成都飞亚航空设备应用研究所有限公司 | A kind of power of alterating and direct current multi-function test stand |
| CN108181526A (en) * | 2017-12-27 | 2018-06-19 | 上海辛格林纳新时达电机有限公司 | Test system for loading of frequency converter and inverter load test method |
| CN108562817A (en) * | 2018-07-16 | 2018-09-21 | 青岛海洋电气设备检测有限公司 | A kind of underwater equipment electric property detecting system and test method |
| CN110632408A (en) * | 2018-06-25 | 2019-12-31 | 北京天诚同创电气有限公司 | Electronic equipment testing method and device for simulating power grid fault |
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| CN104090191B (en) | 2017-03-08 |
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