CN202815111U - System for testing frequency converter - Google Patents
System for testing frequency converter Download PDFInfo
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- CN202815111U CN202815111U CN 201220449799 CN201220449799U CN202815111U CN 202815111 U CN202815111 U CN 202815111U CN 201220449799 CN201220449799 CN 201220449799 CN 201220449799 U CN201220449799 U CN 201220449799U CN 202815111 U CN202815111 U CN 202815111U
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- frequency converter
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Abstract
The utility model discloses a system for testing a frequency converter. The system comprises a multiplexed output frequency converter, at least a tested frequency converter, a first assistant test motor connected with a first tested frequency converter, and a assistant test frequency converter connected with a second assistant test motor. Secondary sides of the multiplexed output frequency converter comprise winding output sides which transform voltage of a bus into a plurality of voltage levels. Each tested frequency converter is connected with one of the plurality of winding output sides. The assistant test frequency converter is connected with the second assistant test motor, and transmits electric energy output by the second assistant test motor to the bus connected with a transformer or adjusts input voltage of the second assistant test motor. The first assistant test motor drives the second assistant test motor which is used to generate loads or output electricity energy. The testing system can carry out experiments of frequency converters in a plurality of voltage levels. With a unit energy feedback method, the system feeds back most energy to a power grid. The system enables frequency converter load experiments and meanwhile other light load experiments can be carried out.
Description
Technical field
The utility model relates to the frequency converter field, particularly a kind of middle high-pressure transducer testing system.
Background technology
The test process of frequency converter if need the frequency converter of a plurality of different electric pressures of test, adopts adjustable transformer to realize the output voltage of a plurality of different brackets at present.
Although this mode can realize the Voltage-output of a plurality of different grades, output interface only has one, can only test a frequency converter at every turn, and testing efficiency is lower; In addition, in the frequency converter drive motor full load test process, can need a large amount of electric energy.
The utility model content
In view of this, the purpose of this utility model is to provide a kind of transducer testing system, needs the problem of a large amount of electric energy to solve the low and full load test of above-mentioned testing efficiency.
To achieve these goals, the utility model adopts following technical scheme:
A kind of transducer testing system comprises:
The transformer of multichannel output, secondary contains the winding outgoing side that the voltage transitions of bus is become a plurality of different electric pressures;
At least one tested frequency converter, each described tested frequency converter connects in described a plurality of winding outgoing side; Wherein, the examination motor is accompanied in the first tested frequency converter connection first;
Accompany the examination frequency converter for one, accompany the examination motor to be connected with second, with the described second delivery of electrical energy of accompanying examination motor output to the bus that is connected with described transformer or regulate described second and accompany the input voltage that tries motor;
Described first to accompany the examination motor to drag connected for the output electric energy or produce described second of load and accompany the examination motor.
Described a plurality of winding outgoing side comprises two kinds in the winding outgoing side of following electric pressure at least: 3kV/6kV outgoing side, 10kV outgoing side, 1140V outgoing side.
Described a plurality of winding outgoing side comprises: 3kV/6kV outgoing side, 10kV outgoing side and 1140V outgoing side; The transformer of described multichannel output comprises: the first transformer comprises that the voltage transitions with the described bus of 690V is at least 1 10kV outgoing side of 10kV; The second transformer comprises that voltage transitions with the described bus of 690V is at least 1 1140V outgoing side of 1140V and is at least 1 3kV/6kV outgoing side of 3kV/6kV with the voltage transitions of the described bus of 690V.
Described system also comprises: first switches cabinet, is used for described 3kV/6kV outgoing side at described the second transformer that connects and carries out voltage and switch and be connected with the switch of described 3kV/6kV outgoing side.
The switch of a described 3kV/6kV outgoing side switches cabinet with the switch of a described 10kV outgoing side through second and is connected the described first tested frequency converter.
Described system also comprises: at least one connects the switch of the outgoing side of described bus; The switch of a described 1140V outgoing side with is connected the switch of outgoing side of a described bus and switches cabinet through the 3rd and connect the second tested frequency converter.
The described second tested frequency converter connects escort services and tries motor; Described escort services try motor and accompany under the halted state of examination motor described first, drag connectedly described second to accompany the examination motor for generation of load or output electric energy.
Described system also comprises: adjust described tested frequency converter overvoltage/under-voltage adjustable transformer, this adjustable transformer is connected between the former limit input side of transformer of electrical network and multichannel output.
Described system also comprises: adjust described tested frequency converter overvoltage/under-voltage adjustable transformer, this adjustable transformer is connected between the former limit input side of transformer of electrical network and multichannel output.
Compare with conventional solution, the beneficial effect of this programme shows:
1, this test macro can be finished the test of the frequency converter of a plurality of electric pressures;
2, adopt the mode of unit energy feedback, with most of energy-feedback power grid, not only satisfy inverter load test demand but also save the energy;
3, by extending out the mode of power supply, with power extension, do the light duty test of other frequency converters when can realize the inverter load test.
Description of drawings
Fig. 1 is a kind of structural representation of present embodiment frequency converter pilot system schematic diagram;
Fig. 2 is another structural representation of present embodiment frequency converter pilot system schematic diagram.
Embodiment
For clearly demonstrating the technical scheme in the utility model, the below provides preferred embodiment and is described with reference to the accompanying drawings.
Test macro among the embodiment comprises:
The transformer of multichannel output, secondary contains the winding outgoing side that the voltage transitions of bus is become a plurality of different electric pressures;
At least one tested frequency converter, each described tested frequency converter connects in described a plurality of winding outgoing side; Wherein, the examination motor is accompanied in the first tested frequency converter connection first;
Accompany the examination frequency converter for one, accompany the examination motor to be connected with second, accompany the bus that delivery of electrical energy to the described transformer of examination motor output connects or regulate described second and accompany the input voltage that tries motor described second;
Described first accompanies the examination motor to drag connectedly described second accompanies the examination motor for generation of load or output electric energy.
Transformer among the embodiment has multichannel output, can according to circumstances export high pressure, low pressure different brackets, with the test of satisfying a plurality of frequency converters or for the requirement of the different voltage tester grades of frequency converter; In test process, second accompanies the examination motor can be dragged the generation electric energy, feeds back to whole test macro, to reduce the test energy consumption.
In an embodiment, the transformer of multichannel output can adopt one or more, and large, the more situation of outgoing side of amplitude of variation for electric pressure can adopt many realizations.
For any outgoing side wherein, adopt the frequency converter that is used for test in different connected modes and the system to be connected by switching cabinet, can realize the switching of different electric pressures, thus the satisfied requirement of testing.
Embodiment below by two different parameters describes in detail.In an embodiment, the busbar voltage of the former limit input side of the transformer in the test macro can adopt the 380V voltage of electrical network, also can adopt through the 690V voltage after the transformer adjusting.
Referring to Fig. 1, Fig. 1 is a kind of typical structure synoptic diagram of present embodiment transducer testing system schematic diagram, the 380V three-phase electricity is after transformer T11 boosts, busbar voltage is 690V, after multichannel output transformer T12 boosts, from the output of secondary multichannel 10kV, 6kV/3kV, 1140V, 690V underloading/load power source is directly from the 690V busbar voltage.Connect tested frequency converter and accompany examination frequency converter, two to accompany the examination motor at each outgoing side.Among the embodiment in Fig. 1, adopt T12 as the multichannel output transformer.
Referring to Fig. 2, Fig. 2 is another typical structure synoptic diagram of present embodiment transducer testing system schematic diagram, in this embodiment, the multichannel output transformer adopts 2, and the 380V power supply transformation of grid side is the multichannel output transformer in the access test macro behind the power supply of 690V.As shown in FIG.: busbar voltage was 690V after the 380V three-phase electricity was boosted through transformer T21, drew many lines from the output terminal of this transformer T21 and accessed respectively multichannel output transformer T22, T23, and transformer T22 is 10kV output with the boost in voltage of bus 690V; Transformer T23 is 6kV/3kV and 1140V with the boost in voltage of bus 690V, and 690V underloading/load power source is directly from the 690V busbar voltage.
Preferentially, this frequency converter pilot system comprises a tested frequency converter at least, and each described tested frequency converter connects an outgoing side of described a plurality of electric pressures, and wherein, the first tested frequency converter connects first and accompanies the examination motor.As shown in Figure 2, tested frequency converter U01 connects the 10kV grade of T22 winding outgoing side or the electric pressure of T23 winding outgoing side 6kV/3kV; Tested frequency converter U03 connects the outgoing side of 1140V or 690V electric pressure.Accompany examination motor M 1 to be connected with tested frequency converter U01, accompany examination motor M 3 to be connected with tested frequency converter U03.
Preferably, this frequency converter pilot system comprises that is also accompanied an examination frequency converter, accompanies the examination motor to be connected with second, accompanies the bus that delivery of electrical energy to the described transformer of examination motor output connects or regulates described second and accompany the input voltage that tries motor described second.As shown in Figure 2, accompany examination motor M 2 to be connected with accompanying examination frequency converter U02.
Preferably, first of this frequency convertor system accompany examination motor M 1 or M3 to drag connectedly to accompany examination motor M 2 for generation of described second of load or output electric energy.
When the tested frequency converter U01 of system testing 10kV, QS1 is closed, QF1 is closed, T21, CJ1 closure, T22, QS2-2 are closed, CJ5 is closed, wiring cabinet JX2, U01, switching cabinet KGX2(this moment accompany the double winding series connection of examination motor M 1 by KGX2 with first after Y connect), with the accompanying examination motor M 1, torque rotary speed sensor NJ1, accompany examination motor M 2 and accompany that examination frequency converter U02, CJ2 are closed to consist of the loop of scrambler, accompany simultaneously examination frequency converter U02 will accompany examination motor M 1 to drag and accompany examination motor M 2 to rotate the energy feedback of generations to the 690V bus.
When the tested frequency converter of system testing 6KV or 3KV electric pressure, QS1 is closed, QF1 is closed, T21, CJ3 closure, T23, switching cabinet KGX1, QS3-1 are closed, CJ6 is closed, will accompany the double winding parallel connection that tries motor M 1 by KGX2 when wiring cabinet JX2, U01, switching cabinet KGX2(6kV test after " Y " connect; 3kV when test will accompany the double winding parallel connection of examination motor M 1 by KGX2 after " △ " connect), motor M 1, torque rotary speed sensor NJ1, motor M 2 with scrambler, accompany examination frequency converter U02, CJ2 to consist of the loop, accompany simultaneously examination frequency converter U02 that motor M 1 dragging motor M2 is rotated the energy feedback of generation to the 690V bus.
When the tested frequency converter U03 of system testing 1140V electric pressure, QS1 is closed, QF1 is closed, T21, CJ3 closure, T23, QS4-2 are closed, CJ9 is closed, wiring cabinet JX5, tested frequency converter U03, wiring cabinet JX8, KGX3 switch cabinet (will accompany the winding connection of examination motor M 3 to change " Y " into by KGX3 and connect this moment), M3, torque rotary speed sensor NJ2, M2, accompany examination frequency converter U02, CJ2 to consist of the loop, accompany simultaneously examination frequency converter U02 with the energy feedback of motor M 3 dragging motor M2 rotation generation to the 690V bus.
When the tested frequency converter U03 of system testing 690V electric pressure, QS1 is closed, QF1 is closed, T21, CJ3 are closed, QS5-1 is closed, CJ10 is closed, wiring cabinet JX5, tested frequency converter U03, wiring cabinet JX8, KGX3 switch cabinet (change the winding connection that escort services try motor M 3 into " △ " by KGX3 and connect this moment), M3, torque rotary speed sensor NJ2, M2, accompany examination frequency converter U02, CJ2 to consist of the loop, accompanies simultaneously examination frequency converter U02 that motor M 3 dragging motor M2 are rotated the energy feedback of generation to the 690V bus.
Preferentially, a plurality of outgoing sides, different connections carry out the conversion of electric pressure by switching cabinet.As shown in Figure 2, switch cabinet KGX1 and carry out the switching of 6KV or 3KV grade, switch cabinet KGX2 and carry out the switching of 1Y, 2Y, 2 delta connection methods, switch cabinet KGX3 and carry out the switching of the connection of △ and Y.
Preferably, each electric pressure is divided into two-way, and one the tunnel for load test, and other one the tunnel for light duty test.As shown in Figure 2,10kV ranking score two-way, a route QS2-1, CJ4, JX1 form, and for the light duty test end provides power supply, other one road QS2-2, CJ5, JX2 form, and provide power supply for the load test end.6kV/3kV ranking score two-way, a route QS3-2, CJ7, JX3 form, and for the light duty test end provides power supply, an other route QS3-1, CJ6, JX2 form, and provide power supply for the load test end.1140V ranking score two-way, a route QS4-1, CJ8, JX4 form, and are the light duty test end, and an other route QS4-2, CJ9, JX5 form, and are the load test end.690V ranking score two-way, a route QS5-2, CJ11, JX6 form, and are the light duty test end, and an other route QS5-1, CJ10, JX5 form, and provide power supply for the load test end.CJ5 and CJ6 are the relation of mechanical electric interlocking, and CJ9 and CJ10 are the relation of mechanical electric interlocking.
Preferably, between the transformer of the output of the multichannel in electrical network and system an adjustable transformer is arranged.As shown in Figure 2, adjustable transformer T0 adjusts the size of transformer T21 and T23, so that tested frequency converter can be modeled into the various states such as overvoltage/under-voltage/normal.So that result's reality situation more of test.
For the system that sets forth among each embodiment of the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (8)
1. a transducer testing system is characterized in that, comprising:
The transformer of multichannel output, secondary contains the winding outgoing side that the voltage transitions of bus is become a plurality of different electric pressures;
At least one tested frequency converter, each described tested frequency converter connects in described a plurality of winding outgoing side; Wherein, the examination motor is accompanied in the first tested frequency converter connection first;
Accompany the examination frequency converter for one, accompany the examination motor to be connected with second, with the described second delivery of electrical energy of accompanying examination motor output to the bus that is connected with described transformer or regulate described second and accompany the input voltage that tries motor;
Described first to accompany the examination motor to drag connected for the output electric energy or produce described second of load and accompany the examination motor.
2. system according to claim 1 is characterized in that, described a plurality of winding outgoing sides comprise two kinds in the winding outgoing side of following electric pressure at least:
3kV/6kV outgoing side, 10kV outgoing side, 1140V outgoing side.
3. system according to claim 2 is characterized in that, described a plurality of winding outgoing sides comprise: 3kV/6kV outgoing side, 10kV outgoing side and 1140V outgoing side;
The transformer of described multichannel output comprises:
The first transformer comprises that the voltage transitions with the described bus of 690V is at least 1 10kV outgoing side of 10kV;
The second transformer comprises that voltage transitions with the described bus of 690V is at least 1 1140V outgoing side of 1140V and is at least 1 3kV/6kV outgoing side of 3kV/6kV with the voltage transitions of the described bus of 690V.
4. system according to claim 3 is characterized in that, described system also comprises:
First switches cabinet, is used for described 3kV/6kV outgoing side at described the second transformer that connects and carries out voltage and switch and be connected with the switch of described 3kV/6kV outgoing side.
5. system according to claim 4 is characterized in that, the switch of a described 3kV/6kV outgoing side switches cabinet with the switch of a described 10kV outgoing side through second and is connected the described first tested frequency converter.
6. system according to claim 3 is characterized in that, described system also comprises: at least one connects the switch of the outgoing side of described bus;
The switch of a described 1140V outgoing side with is connected the switch of outgoing side of a described bus and switches cabinet through the 3rd and connect the second tested frequency converter.
7. system according to claim 6 is characterized in that, the described second tested frequency converter connects escort services and tries motor;
Described escort services try motor and accompany under the halted state of examination motor described first, drag connectedly described second to accompany the examination motor for generation of load or output electric energy.
8. system according to claim 1 is characterized in that, described system also comprises:
Adjust described tested frequency converter overvoltage/under-voltage adjustable transformer, this adjustable transformer is connected between the former limit input side of transformer of electrical network and multichannel output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220449799 CN202815111U (en) | 2012-09-05 | 2012-09-05 | System for testing frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220449799 CN202815111U (en) | 2012-09-05 | 2012-09-05 | System for testing frequency converter |
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| Publication Number | Publication Date |
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| CN202815111U true CN202815111U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220449799 Expired - Fee Related CN202815111U (en) | 2012-09-05 | 2012-09-05 | System for testing frequency converter |
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| CN (1) | CN202815111U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630771A (en) * | 2013-11-06 | 2014-03-12 | 天津瑞能电气有限公司 | Total power testing platform for frequency converter for use in wind power generation |
| CN103825509A (en) * | 2014-01-24 | 2014-05-28 | 宁波钢铁有限公司 | Device applied to startup and operation of high-power motors |
| CN103995206A (en) * | 2014-05-30 | 2014-08-20 | 江苏三恒科技股份有限公司 | Frequency converter testing device |
| CN104090191A (en) * | 2014-07-23 | 2014-10-08 | 江苏三恒科技股份有限公司 | Loading testing device and method used for frequency converter |
| CN105116256A (en) * | 2015-08-27 | 2015-12-02 | 北京利德华福电气技术有限公司 | Novel high voltage frequency converter self-circulation test system and debugging method |
| CN106383281A (en) * | 2016-09-27 | 2017-02-08 | 中信重工开诚智能装备有限公司 | Frequency converter driving test-based loading system and test method |
| CN106597283A (en) * | 2016-12-30 | 2017-04-26 | 中煤科工集团重庆研究院有限公司 | Test system of high power frequency conversion electric drive equipment |
| CN107290608A (en) * | 2017-06-30 | 2017-10-24 | 中国西电电气股份有限公司 | A kind of pilot system and method for 10kV/10MVA four-quadrants high voltage converter |
| CN108152637A (en) * | 2018-01-09 | 2018-06-12 | 青岛海洋电气设备检测有限公司 | A kind of test system and method for frequency converter |
-
2012
- 2012-09-05 CN CN 201220449799 patent/CN202815111U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630771A (en) * | 2013-11-06 | 2014-03-12 | 天津瑞能电气有限公司 | Total power testing platform for frequency converter for use in wind power generation |
| CN103825509A (en) * | 2014-01-24 | 2014-05-28 | 宁波钢铁有限公司 | Device applied to startup and operation of high-power motors |
| CN103995206A (en) * | 2014-05-30 | 2014-08-20 | 江苏三恒科技股份有限公司 | Frequency converter testing device |
| CN104090191A (en) * | 2014-07-23 | 2014-10-08 | 江苏三恒科技股份有限公司 | Loading testing device and method used for frequency converter |
| CN104090191B (en) * | 2014-07-23 | 2017-03-08 | 江苏三恒科技股份有限公司 | A kind of loading test device for converter and method |
| CN105116256A (en) * | 2015-08-27 | 2015-12-02 | 北京利德华福电气技术有限公司 | Novel high voltage frequency converter self-circulation test system and debugging method |
| CN105116256B (en) * | 2015-08-27 | 2017-10-20 | 北京利德华福电气技术有限公司 | A kind of new high voltage converter self-loopa test system and its adjustment method |
| CN106383281A (en) * | 2016-09-27 | 2017-02-08 | 中信重工开诚智能装备有限公司 | Frequency converter driving test-based loading system and test method |
| CN106597283A (en) * | 2016-12-30 | 2017-04-26 | 中煤科工集团重庆研究院有限公司 | Test system of high power frequency conversion electric drive equipment |
| CN107290608A (en) * | 2017-06-30 | 2017-10-24 | 中国西电电气股份有限公司 | A kind of pilot system and method for 10kV/10MVA four-quadrants high voltage converter |
| CN108152637A (en) * | 2018-01-09 | 2018-06-12 | 青岛海洋电气设备检测有限公司 | A kind of test system and method for frequency converter |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20200905 |
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| CF01 | Termination of patent right due to non-payment of annual fee |