CN210222149U - Full-power converter test platform - Google Patents
Full-power converter test platform Download PDFInfo
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- CN210222149U CN210222149U CN201920731174.3U CN201920731174U CN210222149U CN 210222149 U CN210222149 U CN 210222149U CN 201920731174 U CN201920731174 U CN 201920731174U CN 210222149 U CN210222149 U CN 210222149U
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Abstract
The utility model provides a full power converter test platform, including motor-generator to dragging the unit, isolation transformer T1, charging transformer T2, distribution transformer T3, filter reactor L1, filter capacitor C1, a plurality of circuit breaker and a plurality of contactor. The utility model discloses a test platform can carry out the generator respectively to 3MW full power converter owner from the machine and drive the miniwatt operation test that is incorporated into the power networks, full power converter host computer aging test and 3MW full power converter owner from the machine to dragging the experiment. The experiment platform can fully test the 3MW full-power converter, and the research and development cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of electrical equipment tests, especially, relate to a full power converter test platform.
Background
With the continuous development of the wind power industry, a full-power converter is gradually upgraded, a low-power converter does not meet the current market requirement, and the low-power converter replaces the high-power converter, and the high-power converter has high technical content and relatively complex test environment in the development process. The test platform in the traditional mode does not meet the test of the high-power converter, or the test platform in the traditional mode needs to purchase a high-power motor and a high-power matching transformer again, so that the cost is huge, and the production research and development requirements are not met.
In order to save resources and reduce the cost of the test platform, a novel high-power test platform needs to be designed, and the platform can fully test the 3MW full-power converter and reduce the research and development cost.
Disclosure of Invention
In view of this, the utility model aims at providing a full power converter test platform can test 3MW full power converter, and with low costs.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a full-power converter test platform comprises a motor-generator twin-trawling unit, an isolation transformer T1, a charging transformer T2, a distribution transformer T3, a filter reactor L1, a filter capacitor C1, a plurality of circuit breakers and a plurality of contactors, wherein the inlet end of the motor-generator twin-trawling unit is connected with a first external power supply through a contactor KM1 and a circuit breaker Q6 in sequence, and the outlet end of the motor-generator twin-trawling unit is connected with the motor side of a tested full-power converter host through a contactor KM 2; the line outlet end of the circuit breaker Q6 is connected with a switching copper bar, the line outlet end of the switching copper bar is connected with the line inlet ends of a circuit breaker Q8, a circuit breaker Q9 and a circuit breaker Q7 in parallel, the line outlet end of the circuit breaker Q8 is connected with the line outlet end of a circuit breaker Q1, and the line outlet end of a circuit breaker Q1 is connected with the power grid side of the tested full-power converter host; the breaker Q9 is connected to the wire inlet end of the charging transformer T2, the wire outlet end of the charging transformer T2 is connected to the wire inlet end of the isolation transformer T1, the wire inlet end of the isolation transformer T1 is connected to the wire inlet end of the breaker Q1, and the wire outlet end of the isolation transformer T1 is connected to the wire inlet end of the breaker Q2 and the wire inlet end of the breaker Q3 respectively; the outlet end of the breaker Q7 is connected to the outlet end of a breaker Q2, and the outlet end of the breaker Q2 is connected to the grid side of the slave machine of the full-power converter to be tested; the wire outlet end of the breaker Q3 is respectively connected to the wire inlet end of a breaker Q4 and the wire inlet end of a filter reactor L1, the wire inlet end of the filter reactor L1 is connected to a filter capacitor C1 of an angle joint through a filter resistor R1, the wire outlet end of a filter reactor L1 is connected to the wire inlet end of a breaker Q5, the wire outlet end of the breaker Q5 is connected to the motor side of the tested full-power converter host, and the wire outlet end of the breaker Q4 is connected to the motor side of the tested full-power converter slave; the outlet end of the motor-generator twin tractor set is respectively connected to the outlet end of a breaker Q5 through a contactor KM2 and the outlet end of a breaker Q4 through a contactor KM 3; and the incoming line end of the control power supply of the tested full-power converter is connected with a second three-phase power supply through a breaker Q11, a distribution transformer T3 and a breaker Q10 in sequence.
Further, the motor-generator twin-tractor set comprises a dragging frequency converter and a 45kW small motor set, the outlet end of the contactor KM1 is connected to the dragging frequency converter, and the 45kW small motor set is connected to the contactor KM 2.
Further, the breaker Q1, the breaker Q2, the breaker Q3, the breaker Q4 and the breaker Q5 are all frame breakers; the breaker Q6, the breaker Q7, the breaker Q8, the breaker Q9, the breaker Q10 and the breaker Q11 are all molded case breakers.
Compared with the prior art, the utility model discloses following advantage has:
test platform relative cost is lower, replaces 3MW motor-generator with transformer and corollary equipment to dragging the unit, can carry out multinomial test to 3MW full power converter, and the test effect reinforcing reduces the research and development cost.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is the embodiment of the present invention, which discloses a structural schematic diagram of a full power converter test platform.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
A full-power converter testing platform in this embodiment, as shown in fig. 1, includes a motor-generator twin-trawling unit, a filter reactor L1, a filter capacitor C1, an isolation transformer T1 of 2000KVA, a charging transformer T2 of 80KVA, a distribution transformer T3 of 60KVA690V/400V, 5 frame breakers of 2000A (respectively, a frame breaker Q1, a frame breaker Q2, a frame breaker Q3, a frame breaker Q4, and a frame breaker Q5), 3 contactors of 150A (respectively, a contactor KM1, a contactor KM2, and a contactor KM3), 1 molded case breaker Q6 of 500A, 1 molded case breaker Q7 of 150A, 2 molded case breakers of 250A (a molded case breaker Q8 and a molded case breaker Q9), 1 molded case breaker Q10 of 100A, 1 molded case breaker Q11 of 80A, and a molded case breaker of sufficient length 240mm2Cable, sufficient length 95mm2Cable and cable length sufficient 35mm2The power cable is provided with a power cable,
690V three-phase power supply first pass 240mm2The cable is connected to the wire inlet end of the molded case circuit breaker Q6, and the wire outlet end of the molded case circuit breaker Q6 is connected with two groups of cables in parallel: one group is 240mm2The cable is connected to the wire inlet end of the switching copper bar; the other group is 95mm2The cable is connected to the incoming line end of the contactor KM 1;
the line outlet end of the switching copper bar is connected with three groups of cables in parallel: one group is 240mm2The cable is connected to the wire inlet end of the molded case circuit breaker Q8; one group is 95mm2The cable is connected to the wire inlet end of the molded case circuit breaker Q9; the last group is also 95mm2And the cable is connected to the wire inlet end of the molded case circuit breaker Q7.
The outlet end of the molded case circuit breaker Q8 passes through 240mm2The outlet end of the frame breaker Q1 is connected, and the outlet end of the frame breaker Q1 simultaneously passes through 240mm2And the cable is connected to the power grid side of the main machine of the tested full-power converter.
The molded case circuit breaker Q9 passes through 95mm2The cable is connected to the inlet end of the charging transformer T2, and the outlet end of the charging transformer T2 passes through 95mm2The cable is connected to the inlet end of the isolation transformer T1 to isolate the transformerThe inlet terminal of the transformer T1 passes another set of 240mm simultaneously2The cable is connected to the wire inlet end of the frame breaker Q1, and the wire outlet end of the isolation transformer T1 passes through two groups of 240mm2The cables are respectively connected into the wire inlet end of the frame breaker Q2 and the wire inlet end of the frame breaker Q3.
The outlet end of the molded case circuit breaker Q7 passes through 95mm2The cable is connected to the outlet terminal of frame breaker Q2, the outlet terminal of frame breaker Q2 passing through 240mm2And the cable is connected to the power grid side of the tested full-power converter slave machine.
The outlet ends of the frame circuit breaker Q3 pass through two groups of 240mm2The cables are respectively connected to the wire inlet end of the frame breaker Q4 and the wire inlet end of a 0.12mH filter reactor L1, and the wire inlet end of the filter reactor L1 simultaneously passes through 95mm2The cable and the filter resistor R1 are connected to a filter capacitor C1 connected to an angle, and the outlet end of the filter reactor L1 passes through 240mm2The cable is connected to the inlet end of the frame breaker Q5, and the outlet end of the frame breaker Q5 passes through 240mm2The cable is connected to the point machine side of the main machine of the tested full-power converter. The outlet end of frame breaker Q4 passes through 240mm2And the cable is connected to the motor side of the tested full-power converter slave machine.
The motor-generator twin-tractor set comprises a dragging frequency converter and a 45kW small motor set (an asynchronous motor and a permanent magnet generator), and the outlet end of the contactor KM1 passes through 95mm2The cable is connected to the dragging frequency converter, and the outlet end of the dragging frequency converter passes through 95mm2The cable is connected to a 55KW asynchronous motor, the asynchronous motor drives a permanent magnet generator, and two groups of 95mm outlet ends of the permanent magnet generator are connected2Cable: a group of outlet terminals connected to the frame breaker Q5 through a contactor KM 2; the other group is connected to the outlet terminal of the frame breaker Q4 through a contactor KM 3.
A690V three-phase power supply II is connected to the wire inlet end of the distribution transformer T3 through a molded case circuit breaker Q10, and the wire outlet end of the distribution transformer T3 passes through 35mm2The cable is connected to the inlet end of the molded case circuit breaker Q11, and the outlet end of the molded case circuit breaker Q11 passes through 35mm2Cable connection to incoming line of control power supply of full-power converterAnd (4) an end.
The full-power converter test platform of the embodiment can respectively perform a generator-driven low-power grid-connected operation test, a full-power converter host aging test and a 3MW full-power converter host-slave dragging test on a master machine and a slave machine of a 3MW full-power converter, and the test method comprises the following steps:
1) when a test of a generator-driven low-power grid-connected operation test is carried out on the tested full-power converter host, the molded case circuit breaker Q10 is switched on at first, and the molded case circuit breaker Q11 is switched on again, so that the control system of the full-power converter host is powered on.
Then closing a molded case circuit breaker Q6, closing a contactor KM1 again to enable the generator to reach the rated rotating speed of the generator, closing a contactor KM3 and a molded case circuit breaker Q8 again, detecting that 690V voltage exists in the generator by a motor side sensor of a full-power converter host machine, performing logic test on the converter, performing grid connection after the logic test is completed, and then performing low-power operation test.
2) When a small-power grid-connected operation test of the driving of a generator is carried out on the slave machine of the full-power converter, the molded case circuit breaker Q10 is switched on at first, and the molded case circuit breaker Q11 is switched on again, so that the control system of the master machine of the full-power converter is powered on. Then closing a molded case circuit breaker Q6, closing a contactor KM1 again to enable the generator to reach the rated rotating speed of the generator, closing a contactor KM2 and a molded case circuit breaker Q7 again, detecting that 690V voltage exists in the generator by a motor side sensor of a full-power converter host machine, performing logic test on the converter, performing grid connection after the logic test is completed, and then performing low-power operation test.
3) All experiments cannot be tested when the full-power converter is operated at low power, and the full-power operation experiment needs to be carried out on the full-power converter. The aging test can be carried out on the main machine of the full-power converter and the drag test can be carried out on the main machine of the full-power converter and the master machine of the full-power converter.
3) When the aging test is carried out on the tested full-power converter main machine, the molded case circuit breaker Q10 is switched on at first, and the molded case circuit breaker Q11 is switched on again, so that the control system of the full-power converter main machine is electrified. And then closing the molded case circuit breaker Q6, closing the molded case circuit breaker Q9 again, charging the isolation transformer T1 through the charging transformer T2, closing the frame circuit breakers Q1, Q3 and Q5 after the charging is finished, carrying out an operation grid-connection test after a tested full-power converter motor side sensor detects 690V voltage, and then loading the converter operation power for testing.
4) When the drag test is carried out on the main machine of the full-power converter, the molded case circuit breaker Q10 is firstly switched on, and the molded case circuit breaker Q11 is switched on again, so that the control system of the main machine of the full-power converter is electrified. And then closing the molded case circuit breaker Q6, closing the molded case circuit breaker Q9 again, charging the isolation transformer T1 through the charging transformer T2, closing the frame circuit breakers Q1, Q2, Q4 and Q5 after charging is completed, enabling the slave machine of the tested full-power converter to be a dragging converter, carrying out grid-connected inversion on the converter to obtain currents with different voltages and different frequencies, transmitting the currents to the motor side of the host machine of the tested full-power converter, carrying out a grid-connected operation test after a motor side sensor detects that the voltages exist, and then loading the host machine and the slave machine of the tested full-power converter to carry out the test after the rated power is reached. And the tested full-power converter host can also be used as a dragging converter to carry out dragging test on the slave machine, the voltage and the frequency of the motor side under the working condition can be adjusted, and various tests can be carried out on the full-power converter.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A full power converter test platform which characterized in that: comprises a motor-generator twin tractor unit, an isolation transformer T1, a charging transformer T2, a distribution transformer T3, a filter reactor L1, a filter capacitor C1, a plurality of circuit breakers and a plurality of contactors,
the inlet end of the motor-generator twin-tractor unit is connected with a first external power supply through a contactor KM1 and a breaker Q6 in sequence, and the outlet end of the motor-generator twin-tractor unit is connected with the motor side of the tested full-power converter host through a contactor KM 2;
the line outlet end of the circuit breaker Q6 is connected with a switching copper bar, the line outlet end of the switching copper bar is connected with the line inlet ends of a circuit breaker Q8, a circuit breaker Q9 and a circuit breaker Q7 in parallel, the line outlet end of the circuit breaker Q8 is connected with the line outlet end of a circuit breaker Q1, and the line outlet end of a circuit breaker Q1 is connected with the power grid side of the tested full-power converter host;
the breaker Q9 is connected to the wire inlet end of the charging transformer T2, the wire outlet end of the charging transformer T2 is connected to the wire inlet end of the isolation transformer T1, the wire inlet end of the isolation transformer T1 is connected to the wire inlet end of the breaker Q1, and the wire outlet end of the isolation transformer T1 is connected to the wire inlet end of the breaker Q2 and the wire inlet end of the breaker Q3 respectively;
the outlet end of the breaker Q7 is connected to the outlet end of a breaker Q2, and the outlet end of the breaker Q2 is connected to the grid side of the slave machine of the full-power converter to be tested;
the wire outlet end of the breaker Q3 is respectively connected to the wire inlet end of a breaker Q4 and the wire inlet end of a filter reactor L1, the wire inlet end of the filter reactor L1 is connected to a filter capacitor C1 of an angle joint through a filter resistor R1, the wire outlet end of a filter reactor L1 is connected to the wire inlet end of a breaker Q5, the wire outlet end of the breaker Q5 is connected to the motor side of the tested full-power converter host, and the wire outlet end of the breaker Q4 is connected to the motor side of the tested full-power converter slave;
the outlet end of the motor-generator twin tractor set is respectively connected to the outlet end of a breaker Q5 through a contactor KM2 and the outlet end of a breaker Q4 through a contactor KM 3;
and the incoming line end of the control power supply of the tested full-power converter is connected with a second three-phase power supply through a breaker Q11, a distribution transformer T3 and a breaker Q10 in sequence.
2. The full-power converter test platform according to claim 1, wherein: the motor-generator twin-tractor set comprises a dragging frequency converter and a 45kW small motor set, the wire outlet end of the contactor KM1 is connected to the dragging frequency converter, and the 45kW small motor set is connected with the contactor KM 2.
3. The full-power converter test platform according to claim 1, wherein: the breaker Q1, the breaker Q2, the breaker Q3, the breaker Q4 and the breaker Q5 are all frame breakers; the breaker Q6, the breaker Q7, the breaker Q8, the breaker Q9, the breaker Q10 and the breaker Q11 are all molded case breakers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920731174.3U CN210222149U (en) | 2019-05-21 | 2019-05-21 | Full-power converter test platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920731174.3U CN210222149U (en) | 2019-05-21 | 2019-05-21 | Full-power converter test platform |
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| Publication Number | Publication Date |
|---|---|
| CN210222149U true CN210222149U (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920731174.3U Active CN210222149U (en) | 2019-05-21 | 2019-05-21 | Full-power converter test platform |
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| CN (1) | CN210222149U (en) |
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- 2019-05-21 CN CN201920731174.3U patent/CN210222149U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230706 Address after: No. 100, Hangtian Road, Tianjin Pilot Free Trade Zone (Airport Economic Zone), Binhai, Tianjin 300450 Patentee after: TIANJIN RUIYUAN ELECTRICAL Co.,Ltd. Address before: No.1 Xinghua No.7 Branch Road, economic development zone, Xiqing District, Tianjin Patentee before: Tianjin Ruineng electric Co.,LTD. |
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| TR01 | Transfer of patent right |