CN207851174U - A kind of inverter test device - Google Patents
A kind of inverter test device Download PDFInfo
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- CN207851174U CN207851174U CN201820069852.XU CN201820069852U CN207851174U CN 207851174 U CN207851174 U CN 207851174U CN 201820069852 U CN201820069852 U CN 201820069852U CN 207851174 U CN207851174 U CN 207851174U
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- transformer
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Abstract
The utility model provides a kind of inverter test device, including the first transformer and adjustable DC source, and the primary side of the first transformer is for connecting AC network, and the input terminal in secondary side connection adjustable DC source, the output end in adjustable DC source is for connecting inverter to be measured；Further include the second transformer, the primary side of the second transformer is used to connect the exchange side of inverter to be measured, and secondary side is for connecting power grid.Technical solution provided by the utility model, the exchange side of inverter to be measured is accessed into power grid by the second transformer or is connected to the first transformer, electric energy after when testing is fed back in power grid and is recycled, to reduce the waste of the energy, has saved the cost of test.
Description
Technical field
The utility model belongs to inverter technical field of measurement and test, and in particular to a kind of inverter test device.
Background technology
Inverter is that the equipment that DC conversion is alternating current is played very important effect, especially in the power system
It is for photo-voltaic power generation station.Due to the direct current that solar pond solar panel generates in photo-voltaic power generation station, in order to by photovoltaic generation
The electric energy generated of standing is input in power grid, needs that inverter is arranged at photo-voltaic power generation station connection power grid, photo-voltaic power generation station is produced
Raw DC inverter be alternating current after be output in AC network.
Since inverter is very important equipment in photo-voltaic power generation station, the stability of operation is directly related to photovoltaic hair
Can power station be incorporated into the power networks, so when inverter comes into operation, need to be tested for the property it.
Currently used test mode is the exchange side connection load in inverter, and in the DC side the input phase of inverter
The DC voltage for answering grade keeps inverter in running order, then joins to the operation of inverter according to corresponding testing standard
Number is tested.
Since the power of photo-voltaic power generation station inverter is all bigger, so needing to provide for the DC side of inverter when test
Very high-power, but after the completion of testing, these power can all consume in load causes increase and the energy of testing cost
Waste.
Utility model content
The purpose of this utility model is to provide a kind of inverter test devices, are tested to inverter for solving
The problem of Shi Chengben.
To achieve the above object, technical solution provided by the utility model is：
First device scheme 1：A kind of inverter test device, including the first transformer and adjustable DC source, the first transformation
The primary side of device is for connecting AC network, and the input terminal in secondary side connection adjustable DC source, the output end in adjustable DC source is for connecting
Inverter is surveyed in reception；Further include the second transformer, the primary side of the second transformer is used to connect the exchange side of inverter to be measured, secondary side
For connecting power grid.
First device scheme 2：On the basis of first device scheme 1, first transformer primary side is for connecting power grid
Circuit on be provided with the first breaker, second transformer secondary is used to connect on the circuit of power grid and is provided with the second open circuit
Device.
First device scheme 3：On the basis of first device scheme 1 or 2, second transformer primary side is waited for for connecting
It surveys on the circuit of inverter ac side and is provided with vacuum contactor.
The exchange side of inverter to be measured is accessed electricity by technical solution provided by the utility model by the second transformer
Net feeds back to the electric energy after when testing in power grid, to reduce the waste of the energy, has saved the cost of test.
Second device scheme 1：A kind of inverter test device, including the first transformer and adjustable DC source, the first transformation
The primary side of device is for connecting AC network, and the input terminal in secondary side connection adjustable DC source, the output end in adjustable DC source is for connecting
Inverter is surveyed in reception；Further include the second transformer, the primary side of the second transformer is used to connect the exchange side of inverter to be measured, secondary side
Connect the primary side of first transformer.
Second device scheme 2：On the basis of second device scheme 1, the primary side of the first transformer is for connecting alternating current
It is provided with the first breaker on the circuit of net, the secondary side of the second transformer, which connects, is provided with the on the circuit of the first transformer primary side
Two breakers.
Second device scheme 3：On the basis of second device scheme 1 or 2, second transformer primary side is waited for for connecting
It surveys on the circuit of inverter ac side and is provided with vacuum contactor.
Second device scheme 4：Further include ac bus on the basis of second device scheme 3, second transformer
Secondary side connects the primary side of first transformer by ac bus.
Second device scheme 5：On the basis of second device scheme 4, power grid end is connected on ac bus, power grid end is used
In connection AC network；It is provided with the first breaker, the second transformer on the circuit of first transformer primary side connection ac bus
Secondary side connection ac bus circuit on be provided with the second breaker, the is provided on the circuit at ac bus connection power grid end
Three breakers.
Description of the drawings
Fig. 1 is the structure principle chart of inverter test device in embodiment 1；
Fig. 2 is the structure principle chart of inverter test device in embodiment 2；
Fig. 3 is the structure principle chart of inverter test device in embodiment 3.
Specific implementation mode
The purpose of this utility model is to provide a kind of inverter test devices, are tested to inverter for solving
The problem of Shi Chengben, the inverter being applicable not only in photo-voltaic power generation station are also applied for other inverters.
To achieve the above object, technical solution provided by the utility model is：
A kind of inverter test device, including the first transformer and adjustable DC source, the primary side of the first transformer is for connecting
AC network is connect, the input terminal in secondary side connection adjustable DC source, the output end in adjustable DC source is for connecting inverter to be measured；Also
Including the second transformer, the primary side of the second transformer is used to connect the exchange side of inverter to be measured, and secondary side is for connecting power grid.
The embodiment of the utility model is described further below in conjunction with the accompanying drawings.
Embodiment 1：
The present embodiment provides a kind of inverter test devices, for testing inverter, and by the energy after test
It feeds back in power grid, to reduce the waste of the energy, saves the cost of test.
The inverter test device that the present embodiment is provided, structure principle chart is as described in Figure 1, including adjustable DC source
10, the first transformer 11 and the second transformer 12, wherein adjustable DC source 10 are high-power linear adjustable DC power supply, input terminal
For input ac voltage, output end exports DC voltage.
The primary side of first transformer 11 connects AC network by the first breaker 13, secondary side connection adjustable DC source 10
Input terminal, the output end in adjustable DC source 10 connect the DC side of inverter to be measured.
The primary side of second transformer 12 connects the exchange side of inverter to be measured, and secondary side is connected by the second breaker 14 and exchanged
Power grid；
In order to ensure the personal safety of tester when removing inverter or installing inverter, in the second transformer 12
Primary side connects and is provided with vacuum contactor 15 on the circuit of inverter ac side to be measured.
When needing to test inverter to be measured, by the first breaker 13, the second breaker 14 and vacuum contactor
15 are closed；
The primary side of the first transformer 11 obtains electric at this time, input terminal output AC voltage of the secondary side to adjustable DC source 10；
Adjustable DC source 10 carries out rectification and adjusting to the voltage obtained from the first transformer 11, obtains inverter to be measured and surveys
DC voltage needed for examination, and it is transported to the DC side of inverter to be measured；
The voltage obtained from adjustable DC source 10 is reverse into alternating current by inverter to be measured, and the alternating current after inversion passes through
Two transformers 12 are fed back to after carrying out voltage class transformation in power grid, to avoid the waste of the energy, save the cost of test.
Embodiment 2：
The present embodiment provides a kind of inverter test devices, for testing inverter, and by the energy after test
It feeds back in power grid, to reduce the waste of the energy, saves the cost of test.
The inverter test device that the present embodiment is provided, structure principle chart is as described in Figure 2, including adjustable DC source
20, the first transformer 21 and the second transformer 22, wherein adjustable DC source 20 are high-power linear adjustable DC power supply, input terminal
For input ac voltage, output end exports DC voltage.
The primary side of first transformer 21 is connected with the first breaker 23, and the secondary side of the second transformer 22 is connected with the second open circuit
Device 24, and the primary side of the first transformer 21 is connect with the secondary side of the second transformer 22, the tie point of the two passes through third breaker
26 connection AC networks.
The input terminal in the secondary side connection adjustable DC source 20 of the first transformer 21, the output end connection in adjustable DC source 20 wait for
Survey the DC side of inverter.The primary side of second transformer 22 connects the exchange side of inverter to be measured.
In order to ensure the personal safety of tester when removing inverter or installing inverter, in the second transformer 22
Primary side connects and is provided with vacuum contactor 25 on the circuit of inverter ac side to be measured.
When needing to test inverter to be measured, by the first breaker 23, the second breaker 24, third breaker 26
It is closed with vacuum contactor 25；
The primary side of the first transformer 21 obtains electric at this time, input terminal output AC voltage of the secondary side to adjustable DC source 20；
Adjustable DC source 20 carries out rectification and adjusting to the voltage obtained from the first transformer 21, obtains inverter to be measured and surveys
DC voltage needed for examination, and it is transported to the DC side of inverter to be measured；
The voltage obtained from adjustable DC source 20 is reverse into alternating current by inverter to be measured, and the alternating current after inversion passes through
Two transformers 22 feed back to the first transformer 21 after carrying out voltage class transformation, and voltage is conveyed to straight-adjustable by the first transformer 21
Stream source 20 utilizes power cycles, to avoid the waste of the energy, saves the cost of test.
Embodiment 3：
The present embodiment provides a kind of inverter test devices, for testing inverter, and by the energy after test
It feeds back in power grid, to reduce the waste of the energy, saves the cost of test.
The inverter test device that the present embodiment is provided, structure principle chart is as described in Figure 3, including adjustable DC source
30, ac bus 37, the first transformer 31 and the second transformer 32, wherein adjustable DC source 30 are high-power linear adjustable DC
Power supply, input terminal are used for input ac voltage, and output end exports DC voltage.
The primary side of first transformer 31 connects ac bus 37 by the first breaker 33, and the secondary side of the second transformer 32 is logical
Cross the second breaker 34 connection ac bus 37；
Ac bus 37 is connected with power grid end 38, and power grid end 38 connects electricity for connecting AC network in ac bus 37
It nets and is provided with third breaker 36 on the circuit at end 38.
The input terminal in the secondary side connection adjustable DC source 30 of the first transformer 31, the output end connection in adjustable DC source 30 wait for
Survey the DC side of inverter.The primary side of second transformer 32 connects the exchange side of inverter to be measured.
In order to ensure the personal safety of tester when removing inverter or installing inverter, in the second transformer 32
Primary side connects and is provided with vacuum contactor 35 on the circuit of inverter ac side to be measured.
When needing to test inverter to be measured, by the first breaker 33, the second breaker 34, third breaker 36
It is closed with vacuum contactor 35；
The primary side of the first transformer 31 obtains electric from ac bus 37 at this time, and the input terminal in secondary side to adjustable DC source 30 is defeated
Go out alternating voltage；
Adjustable DC source 30 carries out rectification and adjusting to the voltage obtained from the first transformer 31, obtains inverter to be measured and surveys
DC voltage needed for examination, and it is transported to the DC side of inverter to be measured；
The voltage obtained from adjustable DC source 30 is reverse into alternating current by inverter to be measured, and the alternating current after inversion passes through
Two transformers 32 feed back to ac bus 37 after carrying out voltage class transformation, are utilized to power cycles, to avoid the wave of the energy
Take, saves the cost of test.
Claims (8)
1. a kind of inverter test device, including the first transformer and adjustable DC source, the primary side of the first transformer is for connecting
AC network, the output end in secondary side connection adjustable DC source, the input terminal in adjustable DC source is for connecting inverter to be measured；It is special
Sign is, further includes the second transformer, and the primary side of the second transformer is used to connect the exchange side of inverter to be measured, and secondary side is for connecting
Connect AC network.
2. a kind of inverter test device according to claim 1, which is characterized in that first transformer primary side is used for
It connects and is provided with the first breaker on the circuit of power grid, second transformer secondary is provided on the circuit for connecting power grid
Second breaker.
3. a kind of inverter test device according to claim 1 or 2, which is characterized in that second transformer primary side
It is provided with vacuum contactor on circuit for connecting inverter ac side to be measured.
4. a kind of inverter test device, including the first transformer and adjustable DC source, the primary side of the first transformer is for connecting
AC network, the input terminal in secondary side connection adjustable DC source, the output end in adjustable DC source is for connecting inverter to be measured；It is special
Sign is, further includes the second transformer, and the primary side of the second transformer is used to connect the exchange side of inverter to be measured, and secondary side connects institute
State the primary side of the first transformer.
5. a kind of inverter test device according to claim 4, which is characterized in that the primary side of the first transformer is for connecting
It connects and is provided with the first breaker on the circuit of AC network, the secondary side of the second transformer connects on the circuit of the first transformer primary side
It is provided with the second breaker.
6. a kind of inverter test device according to claim 4 or 5, which is characterized in that second transformer primary side
It is provided with vacuum contactor on circuit for connecting inverter ac side to be measured.
7. a kind of inverter test device according to claim 4, which is characterized in that further include ac bus, described
The secondary side of two transformers connects the primary side of first transformer by ac bus.
8. a kind of inverter test device according to claim 7, which is characterized in that be connected with power grid on ac bus
End, power grid end is for connecting AC network；It is provided with the first breaker on the circuit of first transformer primary side connection ac bus,
It is provided with the second breaker on the circuit of the secondary side connection ac bus of second transformer, ac bus connects the circuit at power grid end
On be provided with third breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820069852.XU CN207851174U (en) | 2018-01-16 | 2018-01-16 | A kind of inverter test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820069852.XU CN207851174U (en) | 2018-01-16 | 2018-01-16 | A kind of inverter test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207851174U true CN207851174U (en) | 2018-09-11 |
Family
ID=63414682
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820069852.XU Active CN207851174U (en) | 2018-01-16 | 2018-01-16 | A kind of inverter test device |
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| Country | Link |
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| CN (1) | CN207851174U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264900A (en) * | 2021-11-25 | 2022-04-01 | 深圳科士达科技股份有限公司 | Test system of inversion boosting equipment |
-
2018
- 2018-01-16 CN CN201820069852.XU patent/CN207851174U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264900A (en) * | 2021-11-25 | 2022-04-01 | 深圳科士达科技股份有限公司 | Test system of inversion boosting equipment |
| CN114264900B (en) * | 2021-11-25 | 2024-04-16 | 深圳科士达新能源有限公司 | Test system of inversion boosting equipment |
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