CN209746043U - converter automatic test system - Google Patents
converter automatic test system Download PDFInfo
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- CN209746043U CN209746043U CN201822223871.6U CN201822223871U CN209746043U CN 209746043 U CN209746043 U CN 209746043U CN 201822223871 U CN201822223871 U CN 201822223871U CN 209746043 U CN209746043 U CN 209746043U
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Abstract
An automatic testing system for current transformer, the automatic testing system for current transformer of the utility model is provided with a power supply device, a testing control device and a data acquisition device which are used for providing power supply for a tested device, the testing control device is connected with the power supply device, the output end of the data acquisition device is connected with the input end of the testing control device, a testing control module sets and controls the output parameter of the power supply device according to the testing type of the tested device, the power supply device sends the adjusted corresponding power supply to the tested device and provides power for the tested device, the data acquisition device collects the parameters of the alternating current end and the direct current end of the tested device and generates a report, the data acquisition device sends the collected parameter information of the alternating current end and the direct current end of the tested device to the testing control device, the automatic testing system for current transformer can adapt to different testing requirements when in use, meanwhile, the complex workflow which needs to be manually operated and recorded is avoided, so that the test is simpler, the labor cost is reduced, and the working error is reduced.
Description
Technical Field
The utility model relates to an electric power system's test technical field especially relates to an automatic test system of converter.
background
When testing the efficiency harmonic wave of the energy storage converter and the photovoltaic inverter (hereinafter referred to as tested equipment), the alternating current source, the direct current source and the power analyzer need to be controlled independently. And manually adjusting the power of the direct current source to enable the tested equipment to reach the specified power, then controlling power analysis to store data, and after finishing storage, exporting the data to manually perform secondary processing analysis on the data. This process is very loaded down with trivial details waste manpower time, and the loaded down with trivial details very waste time of data processing among the arrangement data process.
Therefore, it is necessary to provide an automatic testing system for a current transformer to overcome the deficiencies of the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to avoid prior art's weak point and provide a converter automatic test system, this converter automatic test system can directly generate efficiency test report, uses manpower sparingly, reduces the error.
the above object of the present invention is achieved by the following technical means.
The automatic testing system for the converter is provided with a tested device, a power supply device for supplying power to the tested device, a testing control device and a data acquisition device, wherein the testing control device is connected with the power supply device, and the output end of the data acquisition device is connected with the input end of the testing control device.
The specific working steps of the converter automatic test system are as follows;
S1: the test control device outputs power supply parameter information to the power supply device;
s2: the power supply device provides power to the device to be tested according to the power supply parameter information;
S3: the data acquisition device acquires parameters of an alternating current end and a direct current end of the device to be tested and generates a report;
s4: the data acquisition device transmits the collected parameter information of the AC end and the DC end of the device to be tested to the test control device as feedback information;
the test control device judges whether the data acquisition device has acquisition omission according to the feedback information of the data acquisition device,
If there is a missing, the test control device returns to step S1 to control the power supply device to apply power to the device under test.
preferably, the power supply device is provided with a direct current power supply assembly and an alternating current power supply assembly; the direct current power supply component is respectively connected with the test control device and the device to be tested, and the alternating current power supply component is respectively connected with the test control device and the device to be tested.
The direct current power supply component applies the corresponding parameter power supply to the data acquisition device according to the control command of the test control device, and the alternating current power supply component applies the corresponding parameter power supply to the tested device according to the control command of the test control device.
Preferably, the test control device is provided with an energy storage converter efficiency acquisition control assembly and a photovoltaic inversion acquisition control assembly; the photovoltaic inversion collection control assembly is respectively connected with the direct current power supply assembly, the alternating current power supply assembly, the device to be tested and the data acquisition device;
Preferably, the efficiency acquisition control assembly of the energy storage converter respectively controls the output power parameters of the direct current power supply assembly and the output power parameters of the alternating current power supply assembly;
The photovoltaic inversion acquisition control assembly controls output power parameters of the direct current power supply assembly and output power parameters of the alternating current power supply assembly respectively, and the data acquisition device feeds acquired information back to the energy storage converter efficiency acquisition control assembly and the photovoltaic inversion acquisition control assembly respectively.
Preferably, the direct current power supply assembly is provided with a CV mode direct current power supply and a PV mode direct current power supply;
the CV mode direct current power supply is respectively connected with the device to be tested, the energy storage converter efficiency acquisition control assembly and the photovoltaic inversion acquisition control assembly;
The PV mode direct current power supply is respectively connected with the device to be tested, the energy storage converter efficiency acquisition control assembly and the photovoltaic inversion acquisition control assembly;
The CV mode direct current power supply provides power for a tested device according to control commands of the energy storage converter efficiency acquisition control assembly and the photovoltaic inversion acquisition control assembly;
And the PV mode direct current power supply provides power for the device to be tested according to the control commands of the energy storage converter efficiency acquisition control assembly and the photovoltaic inversion acquisition control assembly.
preferably, the specific control steps of the energy storage converter efficiency acquisition control assembly are as follows:
Setting a direct current power supply to be in a CV mode in the step (1-1);
step (1-2) sequentially setting the voltage of an alternating current power supply as V1, the frequency as F1 and the phase as phi 1;
setting the voltage of a direct current power supply to be V (1-3);
Step (1-4) setting a tested device as power supply X power of an energy storage converter;
step (1-5) delay waiting S1;
controlling to send data of a T1 time period to a data acquisition device;
step (1-7) judging whether all power measuring points are finished, and if not, returning to the step (1-4) for circulating operation;
step (1-8) judging whether all voltage measuring points are finished or not, and returning to the step (1-3) for circulating operation if the voltage measuring points are not finished;
preferably, in step (1-9), the data acquisition device generates a data report.
Preferably, the energy storage converter efficiency acquisition control assembly is used for testing the rectification efficiency of the energy storage converter, the inversion efficiency of the energy storage converter and the harmonic wave of the energy storage converter.
Preferably, the specific control and test steps of the photovoltaic inversion acquisition control assembly are as follows:
step (2-1) setting a direct current power supply to be in a PV mode;
Step (2-2) sequentially setting the voltage of the alternating current power supply as V2, the frequency as F2 and the phase as phi 2;
Step (2-3) carrying out static MPPT test on the film assembly;
step (2-4) performing static MPPT test on the crystalline silicon assembly;
Step (2-5) generating an A1 report;
Step (2-6) carrying out dynamic MPPT test;
preferably, in step (2-7), the data acquisition device generates a data report.
Preferably, the test control device is further provided with a film/crystal static MPPT test control unit;
the film/crystal static MPPT test control unit is respectively connected with a CV mode direct current power supply, a PV mode direct current power supply, an alternating current power supply assembly and a photovoltaic inversion acquisition control assembly;
And the film/crystal static MPPT test control unit controls the output power supply parameters of the CV mode direct-current power supply, the PV mode direct-current power supply and the output power supply parameters of the alternating-current power supply assembly, and sends the output power supply parameters to the photovoltaic inversion acquisition control assembly to execute the operations of the steps (2-1) to (2-7).
Preferably, the testing step of the film/crystal static MPPT testing control unit is as follows;
And (3-1) setting the direct current power supply to be UMPP (MPPT voltage), IMPP (impact resistance power), UOC (overvoltage) and ISC (short-circuit current), testing after setting, and generating a data report after testing.
Step (3-2) carrying out third delay waiting;
Step (3-3) sending the voltage, current, power and efficiency of the T3 time period to a preferred data acquisition device;
step (3-4) judging whether all PMPP and UMPP measuring points are finished or not, and if not, returning to the step (3-1) to continue the test operation;
The step (3-5) enters the operation from the step (2-1) to the step (2-7);
preferably, the test control device is also provided with a photovoltaic inverter harmonic test control unit; the photovoltaic inversion acquisition control assembly is respectively connected with the direct current power supply assembly, the alternating current power supply assembly and the data acquisition device;
preferably, the photovoltaic inverter harmonic test control unit controls the power output parameters of the direct current power supply assembly and the output parameters of the alternating current power supply assembly and sends the parameters to the data acquisition device.
preferably, the control steps of the photovoltaic inverter harmonic test control unit are specifically as follows:
Setting a direct current power supply CV mode;
setting the voltage of the alternating current power supply to be V4, the frequency to be F4 and the phase to be phi 4 in the step (4-2);
Step (4-3) judges whether the direct current power supply is in a PV mode, if so, the step (4-3-1) is carried out for setting, and if not, the step (4-3-2) is carried out
setting the direct current power supply to UMPP, IMPP, UOC, ISC in the step (4-3-1)
step (4-3-2) setting the voltage of the direct current power supply to be V (4-3-2);
Step (4-4) setting the AC side power of the energy storage converter as P AC;
Step (4-5) is carried out S4 delay waiting;
step (4-6) sending the voltage, current, power and efficiency of the T4 time period to a data acquisition device;
step (4-6) judging whether all power measuring points are finished or not, and if not, entering step (4-4);
preferably, in step (4-7), the data acquisition device generates a data report.
preferably, when the energy storage converter efficiency acquisition control assembly is used for testing the rectification efficiency of the energy storage converter, the device to be tested is set to be the direct-current side power of the energy storage converter in the step (1-4).
preferably, when the energy storage converter efficiency acquisition control assembly is used for the inversion efficiency test and the harmonic test of the energy storage converter, the tested device is set to be the alternating-current side power of the energy storage converter in the step (1-4).
preferably, 0V is not less than V1 is not more than 300V; f1 is more than or equal to 45Hz and less than or equal to 65 Hz; phi is more than or equal to 0 and less than or equal to 360 degrees; v is more than or equal to 0V and less than or equal to 360V (4-3-2); v is more than or equal to 0V and less than or equal to 360V (1-3).
preferably, 0min is less than or equal to S1 is less than or equal to 5 min.
preferably, T1 is less than or equal to 3min and less than or equal to 10 min.
Preferably, 0V is not less than V2 is not more than 300V; f2 is more than or equal to 45Hz and less than or equal to 65 Hz; phi is more than or equal to 0 and less than or equal to 360 degrees.
Preferably, 0 ≦ third delay time ≦ 5 min.
Preferably, T3 is less than or equal to 3min and less than or equal to 10 min.
Preferably, 0V is not less than V4 is not more than 300V; f4 is more than or equal to 45Hz and less than or equal to 65 Hz; phi is more than or equal to 0 and less than or equal to 360 degrees.
Preferably, 0min is less than or equal to S4 is less than or equal to 5 min; t4 is more than or equal to 3min and less than or equal to 10 min.
preferably, the report A1 of step (2-5) includes: one or more of a static MPPT report, a conversion efficiency report and a weighted efficiency report.
Preferably, the data acquisition device is set to WT 3000.
Preferably, -1500kW < P cross < 1500 kW.
the utility model discloses an automatic test system of converter is provided with power supply unit, test control device and the data acquisition device who is used for providing the power for the device under test, and test control device is connected with power supply unit, and data acquisition device's output is connected with test control device's input.
the test control device sets and controls the output parameters of the power supply device according to the test type of the tested device, the power supply device applies the adjusted corresponding power to the tested device and provides power for the tested device, the data acquisition device collects the parameters of the alternating current end and the direct current end of the tested device and generates a report, and the data acquisition device sends the collected parameter information of the alternating current end and the direct current end of the tested device to the test control device. The test control device detects whether the data acquisition device has acquisition omission according to the feedback information of the data acquisition device, if the acquisition omission exists, the test control device controls the power supply device to continuously apply corresponding power to the device to be tested, and the power supply device is provided with a direct current power supply assembly and an alternating current power supply assembly; the testing control device is provided with an energy storage converter efficiency acquisition control assembly, a photovoltaic inversion acquisition control assembly, a film/crystal static MPPT testing control unit and a photovoltaic inverter harmonic testing control unit, corresponding power data are output to the tested device by controlling the power supply device through different control units, and the data acquisition device is responsible for acquiring parameters of an alternating current end and a direct current end of the tested device and generating a report. The converter automatic test system can meet different test requirements when in use, and simultaneously avoids the complex work flow which needs to be manually operated and recorded, so that the test is simpler, the labor cost is reduced, and the working error is reduced.
Drawings
the present invention will be further described with reference to the accompanying drawings, but the contents in the drawings do not constitute any limitation to the present invention.
Fig. 1 is a schematic diagram of the overall system connection structure of the present invention.
fig. 2 is a schematic structural diagram of embodiment 1 of the present invention.
fig. 3 is a schematic structural diagram of embodiment 2 of the present invention.
fig. 4 is a schematic structural diagram of embodiment 3 of the present invention.
In fig. 1 to 4, the following are included:
A device under test 100;
A power supply device 200, a direct current power supply component 201, a CV mode direct current power supply, a PV mode direct current power supply and an alternating current power supply component 202;
the device comprises a test control device 300, an energy storage converter efficiency acquisition control component 301, a photovoltaic inversion acquisition control component 302, a thin film/crystal static MPPT test control unit 303 and a photovoltaic inverter harmonic test control unit 304;
a data acquisition device 400.
Detailed Description
The invention will be further described with reference to the following examples.
example 1.
An automatic testing system for a current transformer is provided with a power supply device 200 for supplying power to a device under test 100, a test control device 300 and a data acquisition device 400, as shown in fig. 1 and 2.
the test control device 300 is connected with the power supply device 200, and the output end of the data acquisition device 400 is connected with the input end of the test control device 300.
The specific working steps of the converter automatic test system are as follows;
S1: the test control device 300 outputs the power supply parameter information to the power supply device 200;
S2: the power supply device 200 provides power to the device 100 to be tested according to the power supply parameter information;
S3: the data acquisition device 400 acquires parameters of an alternating current end and a direct current end of the device 100 to be tested and generates a report;
S4: the data acquisition device 400 transmits the collected parameter information of the ac terminal and the dc terminal of the device under test 100 to the test control device 300 as feedback information;
The test control device 300 judges whether the data acquisition device 400 has acquisition omission according to the feedback information of the data acquisition device,
If there is a missed test, the control device 300 returns to step S1 to control the power supply device 200 to apply power to the device under test 100.
the test control device 300 sets and controls the output parameters of the power supply device 200 according to the test type of the device under test 100, the power supply device 200 sends the adjusted corresponding power to the device under test 100 and provides power for the device under test 100, the data acquisition device 400 collects the parameters of the ac end and the dc end of the device under test 100 and generates a report, the data acquisition device 400 sends the collected parameter information of the ac end and the dc end of the device under test 100 to the test control device 300, the test control device 300 detects whether the data acquisition device 400 has acquisition omission according to the feedback information of the data acquisition device 400, if the acquisition omission occurs, the test control device 300 controls the power supply device 200 to continuously apply the corresponding power to the device under test 100,
The device under test 100 can be divided into a rectification efficiency test, an inversion efficiency test and a Chinese efficiency test according to the test requirements.
data acquisition device 400 is set to WT 3000.
specifically, the power supply device 200 is provided with a dc power supply component 201 and an ac power supply component 202; the dc power supply module 201 is connected to the test control device 300 and the device under test 100, the ac power supply module 202 is connected to the test control device 300 and the device under test 100, the dc power supply module 201 transmits a corresponding parameter power supply to the device under test 100 according to a control command of the test control device 300, and the ac power supply module 202 transmits a corresponding parameter power supply to the device under test 100 according to a control command of the test control device 300.
Specifically, the test control device 300 is provided with an energy storage converter efficiency acquisition control component 301 and a photovoltaic inversion acquisition control component 302, the energy storage converter efficiency acquisition control component 301 is respectively connected with a direct current power supply component 201, an alternating current power supply component 202, a device 100 to be tested and a data acquisition device 400, the photovoltaic inversion acquisition control component 302 is respectively connected with the direct current power supply component 201, the alternating current power supply assembly 202, the device 100 to be tested and the data acquisition device 400 are connected, the energy storage converter efficiency acquisition control assembly 301 respectively controls the output power supply parameters of the direct current power supply assembly 201 and the output power supply parameters of the alternating current power supply assembly 202, the photovoltaic inversion acquisition control assembly 302 respectively controls the output power supply parameters of the direct current power supply assembly 201 and the output power supply parameters of the alternating current power supply assembly 202, and the data acquisition device 400 respectively feeds acquired information back to the energy storage converter efficiency acquisition control assembly 301 and the photovoltaic inversion acquisition control assembly 302.
Specifically, the direct current power supply component 201 is provided with a CV mode direct current power supply and a PV mode direct current power supply, and the CV mode direct current power supply is respectively connected with the device 100 to be tested, the energy storage converter efficiency acquisition control component 301 and the photovoltaic inversion acquisition control component 302;
The PV mode direct current power supply is respectively connected with the device 100 to be tested, the energy storage converter efficiency acquisition control assembly 301 and the photovoltaic inversion acquisition control assembly 302;
The CV mode direct current power supply provides power for the device 100 to be tested according to control commands of the energy storage converter efficiency acquisition control component 301 and the photovoltaic inversion acquisition control component 302;
The PV mode dc power supply provides power to the device under test 100 according to the control commands of the energy storage converter efficiency acquisition control module 301 and the photovoltaic inversion acquisition control module 302.
Specifically, the specific control steps of the energy storage converter efficiency acquisition control assembly 301 are as follows:
Setting a direct current power supply to be in a CV mode in the step (1-1);
step (1-2) sequentially setting the voltage of an alternating current power supply as V1, the frequency as F1 and the phase as phi 1;
Specifically, V1 is more than or equal to 0V and less than or equal to 300V; f1 is more than or equal to 45Hz and less than or equal to 65 Hz; phi is more than or equal to 0 and less than or equal to 360 degrees.
when V1, F1, and Φ 1 are actually operated and set, the setting needs to be performed according to the model of the device under test that is actually used.
setting the voltage of a direct current power supply to be V (1-3);
step (1-4) setting the device to be tested 100 as the power supply X power of the energy storage converter;
Step (1-5) delay waiting S1; specifically, S1 is more than or equal to 0min and less than or equal to 5 min.
The delay waiting is related to the tested equipment and is the time for waiting the output of the tested equipment to be stable, for example, when the output of the tested equipment is 50kW, a certain time is possibly used for stabilizing the output, namely the delay waiting, and the time is generally 0-5 min according to the standard.
step (1-6) controlling to send the data of the T1 time period to a specific data acquisition device 400; specifically, T1 is more than or equal to 3min and less than or equal to 10 min.
Step (1-7) judging whether all power measuring points are finished, and if not, returning to the step (1-4) for circulating operation;
and (1) judging whether all the voltage measuring points are finished or not, and returning to the step (1-3) for circulating operation if the voltage measuring points are not finished.
The data acquisition device 400 transmits data to the energy storage converter efficiency acquisition control assembly 301 of the test control device 300 for data acquisition feedback, and in actual operation detection, for example, in the energy storage converter efficiency test, 3 voltage sections are tested according to standard requirements, and each voltage section is disconnected into 10 power points, 10%, 20% and 30% -100%. The judgment method is the cyclic query, and if the selected test points are not circulated, the test points can be continuously run. If all test points have been cycled, a report is made indicating that all power test points have been completed at that time. The detection modes of all the voltage measuring points are consistent with the judgment modes of all the power point detection, and the specific detection steps are not repeated based on the common general knowledge of the ordinary technicians in the field.
Step (1-9) the data acquisition device 400 generates a data report.
Specifically, the energy storage converter efficiency acquisition control assembly 301 is used for testing the rectification efficiency of the energy storage converter, the inversion efficiency of the energy storage converter and the harmonic wave of the energy storage converter.
specifically, the specific control and test steps of the photovoltaic inverter acquisition control assembly 302 are as follows:
Step (2-1) setting a direct current power supply to be in a PV mode;
and (2-2) sequentially setting the voltage of the alternating current power supply as V2, the frequency as F2 and the phase as phi 2.
specifically, V2 is more than or equal to 0V and less than or equal to 300V; f2 is more than or equal to 45Hz and less than or equal to 65 Hz; phi is more than or equal to 0 and less than or equal to 360 degrees.
setting the voltage of the ac power source to V2, the frequency to F2, and the phase to Φ 2 in actual operation is set according to the actual specific model of the device 100 under test, and the setting manner is based on the common general knowledge of those skilled in the art, and will not be described again.
step (2-3) carrying out static MPPT test on the film assembly;
when the static MPPT test of the thin film component is carried out, the voltage is tested from low to high according to the specific equipment parameter of the photovoltaic inverter, then the power is tested from low to high,
Step (2-4) performing static MPPT test on the crystalline silicon assembly;
Step (2-5) generating an A1 report;
The report A1 of the step (2-5) comprises the following steps: a static MPPT report, a conversion efficiency report and a weighted efficiency report.
the generation steps of the A1 report form are as follows: 1. collecting data of related tests, 2, indexing the data of the related tests, processing according to a formula provided by a standard, 3, adding the data after the index processing to a corresponding position in a report template, and 4, generating a word report.
step (2-6) carrying out dynamic MPPT test;
Such as: and setting 17 corresponding curves according to the standard of Chinese efficiency technical condition of 0002 + 2014 photovoltaic grid-connected inverter in the field. And numbering the curves from No. 1 to No. 17, sequentially testing and acquiring data, processing the data after the data acquisition is finished, and generating a report.
Specifically, the data collection device 400 generates a data report in step (2-7).
specifically, after the test is completed, a report is automatically generated, and corresponding data is filled into a form of the report through an index. When the energy storage converter efficiency acquisition control assembly 301 is used for testing the rectification efficiency of the energy storage converter, the step (1-4) is to set the device to be tested 100 as the direct-current side power of the energy storage converter.
Specifically, when the energy storage converter efficiency acquisition control assembly 301 is used for an energy storage converter inversion efficiency test and an energy storage converter harmonic test, the step (1-4) sets the device to be tested 100 as the alternating-current side power of the energy storage converter.
the utility model discloses an automatic test system of converter is provided with power supply unit, test control device and the data acquisition device that are used for providing the power for the device under test, and test control device is connected with power supply unit and data acquisition device respectively, and power supply unit is connected with the data acquisition device; the test control device sets and controls the output parameters of the power supply device according to the test requirements of the device to be tested, the power supply device outputs voltage and current data to the device to be tested, the data acquisition device acquires the parameters of the alternating current end and the direct current end of the device to be tested and generates a report,
this converter automatic test system can carry out rectification efficiency test, energy storage converter contravariant efficiency and photovoltaic inverter china efficiency test to energy storage converter when using, and the loaded down with trivial details work flow that need pass through manual operation and record has been avoided in the test for the test is succinct more, reduces the cost of labor, reduces working error.
example 2.
the other structures of the converter automatic test system are the same as those of the embodiment 1, and the difference is that the converter automatic test system, specifically, the test control device 300 is also provided with a film/crystal static MPPT test control unit 303;
the film/crystal static MPPT test control unit 303 is respectively connected with a CV mode direct current power supply, a PV mode direct current power supply, an alternating current power supply assembly 202 and a photovoltaic inversion acquisition control assembly 302;
The thin film/crystal static MPPT test control unit 303 controls the output power parameter 2011 of the CV mode dc power supply, the output power parameter of the PV mode dc power supply, and the output power parameter of the ac power supply module 202, and sends the output power parameters to the photovoltaic inversion acquisition control module 302 to execute the operations of the steps (2-1) to (2-7).
specifically, the testing step of the thin film/crystal static MPPT testing control unit 303 is;
and (3-1) setting the direct current power supply to be UMPP (MPPT voltage), IMPP (MPPT current), UOC (overvoltage) and ISC (short-circuit current).
Step (3-2) carrying out third delay waiting;
The third delay time is more than or equal to 0 and less than or equal to 5min
Step (3-3) sending the voltage, current, power and efficiency of the time period T3 to the data acquisition device 400;
and the T3 is more than or equal to 3min and less than or equal to 10 min.
Step (3-4) judging whether all PMPP and UMPP measuring points are finished or not, and if not, returning to the step (3-1) to continue the test operation;
when determining whether all PMPP and UMPP test points are completed, the data acquisition device 400 transmits data to the film/crystal static MPPT test control unit 303 of the test control device 300 for feedback, and if the film/crystal static MPPT test needs to be performed according to the standard, and 3 voltage segments need to be tested, each voltage is disconnected into 10 power points, 10%, 20%, and 30% -100%. The judgment method is the cyclic query, and if the selected test points are not circulated, the test points can be continuously run. If all test points have been cycled, a report is made indicating that all power test points have been completed at that time. The detection modes of all the voltage measuring points are consistent with the judgment modes of all the power point detection, and the specific detection steps are not repeated based on the common general knowledge of the ordinary technicians in the field.
and (3) the step (3-5) enters the operation from the step (2-1) to the step (2-7).
The film/crystal silicon static MPPT test can be carried out by arranging the film/crystal silicon static MPPT test control unit, and the test range is further improved.
example 3.
The other structures of the converter automatic test system are the same as those of the embodiment 1 or 2, and the difference is that a photovoltaic inverter harmonic wave test control unit 304 is further arranged on the test control device 300; the photovoltaic inversion acquisition control assembly 302 is respectively connected with the direct current power supply assembly 201, the alternating current power supply assembly 202 and the data acquisition device 400;
Specifically, the photovoltaic inverter harmonic test control unit 304 controls the power output parameters of the dc power supply assembly 201 and the output parameters of the ac power supply assembly 202 and sends the parameters to the data acquisition device 400.
Specifically, the control steps of the photovoltaic inverter harmonic test control unit 304 are specifically:
setting a direct current power supply CV mode;
Setting the voltage of the alternating current power supply to be V4, the frequency to be F4 and the phase to be phi 4 in the step (4-2);
Specifically, the V4 is more than or equal to 0V and less than or equal to 300V; f4 is more than or equal to 45Hz and less than or equal to 65 Hz; phi is more than or equal to 0 and less than or equal to 360 degrees.
Step (4-3) judges whether the direct current power supply is in a PV mode, if so, the step (4-3-1) is carried out for setting, and if not, the step (4-3-2) is carried out
setting the direct current power supply to UMPP, IMPP, UOC, ISC in the step (4-3-1)
step (4-3-2) setting the voltage of the direct current power supply to be V (4-3-2);
In actual operation, the set dc power supply voltage is set according to the actual operating parameters of the device to be measured, and the specific setting mode is based on the common general knowledge of those skilled in the art, and will not be described in detail.
step (4-4) setting the AC side power of the energy storage converter as P AC;
step (4-5) is carried out S4 delay waiting; specifically, S4 is more than or equal to 0min and less than or equal to 5 min.
step (4-6) sending the voltage, current, power and efficiency of the time period T4 to the specific data acquisition device 400; specifically, T4 is more than or equal to 3min and less than or equal to 10 min.
Step (4-6) judging whether all power measuring points are finished or not, and if not, entering step (4-4);
specifically, in step (4-7), the data acquisition device 400 generates a data report.
p cross is more than or equal to 1500kW and less than or equal to 1500 kW.
The photovoltaic inverter harmonic test control unit is arranged, so that the photovoltaic inverter harmonic test is increased, the test efficiency is further improved, the labor cost is reduced, and the complexity of test work is simplified.
it should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (6)
1. an automatic test system of a current transformer is characterized in that: is provided with a test control device, a power supply device for providing power supply for a tested device and a data acquisition device,
The test control device is connected with the power supply device, and the output end of the data acquisition device is connected with the input end of the test control device.
2. the automatic test system of the current transformer of claim 1, wherein: the power supply device is provided with a direct current power supply assembly and an alternating current power supply assembly;
The direct current power supply assembly is respectively connected with the test control device and the device to be tested, and the alternating current power supply assembly is respectively connected with the test control device and the device to be tested.
3. the automatic test system of the current transformer of claim 2, wherein:
The test control device is provided with an energy storage converter efficiency acquisition control assembly and a photovoltaic inversion acquisition control assembly;
The efficiency acquisition control assembly of the energy storage converter is respectively connected with the direct current power supply assembly, the alternating current power supply assembly, the device to be tested and the data acquisition device, and the photovoltaic inversion acquisition control assembly is respectively connected with the direct current power supply assembly, the alternating current power supply assembly, the device to be tested and the data acquisition device.
4. The automatic test system of the current transformer of claim 3, wherein:
the direct current power supply assembly is provided with a CV mode direct current power supply and a PV mode direct current power supply.
5. The automatic test system of the current transformer of claim 4, wherein: the test control device is also provided with a photovoltaic inverter harmonic test control unit;
The photovoltaic inversion acquisition control assembly is respectively connected with the direct current power supply assembly, the alternating current power supply assembly and the data acquisition device.
6. the automatic test system of the current transformer of claim 5, wherein:
the data acquisition device is set to WT 3000.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111208365A (en) * | 2020-01-06 | 2020-05-29 | 平高集团有限公司 | PCS test system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111208365A (en) * | 2020-01-06 | 2020-05-29 | 平高集团有限公司 | PCS test system |
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