Optical storage inverter power supply automatic test system

Abstract

The utility model relates to an optical storage inverter power supply automatic test system, which is used for testing the performance of an optical storage inverter power supply, and comprises an upper computer, ATE test equipment and a control processing assembly, the ATE test equipment comprises an oscilloscope, a PV source, a bidirectional DC source, an AC load, a power analyzer and a universal meter; each test interface of the ATE test equipment is correspondingly connected with an input / output port of the optical storage inverter power supply, the control processing assembly is connected to the upper computer and the ATE test equipment, and parameter adjustment and input / output control of the optical storage inverter power supply are realized through the upper computer. Meanwhile, the working state and parameter setting of each test instrument in the ATE test equipment are controlled, and voltage and current data collected by each test instrument in the ATE test equipment are received and analyzed. According to the invention, the power supply of the optical storage inverter is rapidly measured automatically, manual intervention during automatic testing is avoided, the testing efficiency is improved, and the measurement result is accurate.

Description

TECHNICAL FIELD

[0001] The utility model relates to power equipment test technical field, concretely relates to a kind of light storage inverter power automatic test system. BACKGROUND

[0002] Light storage inverter not only can provide photovoltaic inverter, but also can realize energy storage and grid connection etc.Function.Solar cell generated direct current energy not only can be stored through battery energy, but also can be converted from direct current to alternating current to provide local power supply, or, through three-phase alternating current output to power grid, to provide different forms of feeder.With the popularization of solar power generation, light storage inverter as an important part in solar system, also receives more and more attention.In order to ensure that light storage inverter is safe, stable and efficient operation, it is necessary to test.

[0003] The test items of light storage inverter usually include direct current input voltage test, alternating current output voltage test, power factor test and efficiency test.Among them, direct current input voltage test can detect whether the direct current input voltage of photovoltaic panel and inverter meets the standard, and the parameters to be measured in the test include direct current input voltage, maximum working voltage, maximum current, short circuit current, etc.Alternating current output voltage test can detect whether the output voltage and current of inverter meet the standard, and the parameters to be concerned in the test process include output voltage, frequency, maximum power and distortion degree, etc.Power factor test is used to judge the stability and adjustment capacity of photovoltaic inverter output power, and the parameters to be concerned in the test process include power factor, power factor range, harmonic distortion, etc.Efficiency test is used to judge the energy conversion rate of photovoltaic inverter under different loads, and the parameters to be concerned in the test process include input power, output power, total harmonic distortion, etc.

[0004] Therefore, in the test process of light storage inverter, it is often necessary to set parameters continuously, and the workload of setting and processing data is cumbersome and the task is large, which makes the test efficiency low. UTILITY MODEL CONTENT

[0005] Therefore, it is necessary to provide a light storage inverter power automatic test system with high test efficiency and simple structure.

[0006] A light storage inverter power automatic test system is used for performance test of light storage inverter power, comprising:

[0007] The host computer is connected to the communication interface of the light storage inverter power, and is used for realizing data communication between the light storage inverter power and the host computer.

[0008] The ATE testing device includes an oscilloscope, a PV source, a bidirectional direct current source, an alternating current load, a power analyzer and a multimeter; the oscilloscope is unidirectionally connected with the PV end and the battery end of the light storage inverter power supply, the PV source is unidirectionally connected with the PV end of the light storage inverter power supply, the bidirectional direct current source is bidirectionally connected with the battery end of the light storage inverter power supply, the alternating current load is unidirectionally connected with the load end of the light storage inverter power supply, and the light storage inverter power supply supplies power to the alternating current load; the power analyzer is unidirectionally connected with the PV end and the battery end of the light storage inverter power supply, and the multimeter is unidirectionally connected with the load end of the light storage inverter power supply; the power analyzer and the multimeter respectively collect voltage and current data of the PV end, the battery end and the load end of the light storage inverter power supply; the ATE testing device is connected to the light storage inverter power supply to realize automatic testing of the light storage inverter power supply.

[0009] The control processing component is connected to the host computer and the ATE testing device, and is used for controlling the host computer, the oscilloscope, the PV source, the bidirectional direct current source, the alternating current load, the power analyzer and the multimeter to process parameters and waveform data of input and output of the light storage inverter power supply.

[0010] Preferably, the PV source is connected to the PV end of the light storage inverter power supply, the bidirectional direct current source is connected to the battery end of the light storage inverter power supply, and the load end of the light storage inverter power supply is connected to the alternating current load.

[0011] Preferably, the oscilloscope is connected with the PV end and the battery end of the light storage inverter power supply through a passive probe.

[0012] Preferably, the power analyzer is connected with the PV end and the battery end of the light storage inverter power supply, and is used for collecting and recording voltage and current data of the PV end and the battery end of the light storage inverter power supply; the multimeter is connected with the load end of the light storage inverter power supply, and is used for collecting and recording voltage data of the load end of the light storage inverter power supply.

[0013] Preferably, the light storage inverter power supply adopts a bidirectional inverter power supply, the load end of the light storage inverter power supply is connected to the alternating current load, the load end of the light storage inverter power supply outputs alternating current, the battery end of the light storage inverter power supply is connected to the bidirectional direct current source, and the battery end of the light storage inverter power supply outputs direct current.

[0014] Preferably, the control processing component is connected with the host computer, the oscilloscope, the PV source, the bidirectional direct current source, the alternating current load, the power analyzer and the multimeter through a USB communication interface.

[0015] Preferably, the control processing component controls the power-on and power-off of the PV source and the bidirectional DC source through the USB protocol communication line, and acquires and processes the voltage and current data collected by the oscilloscope and the multimeter.

[0016] Preferably, the control processing component starts the power-on of the PV source and the bidirectional DC source, makes the PV source simulate photovoltaic to provide DC input to the light storage inverter power supply, makes the bidirectional DC source simulate a battery to provide DC input to the light storage inverter power supply, so that the light storage inverter power supply is in a working state; the control processing component acquires parameters from the power analyzer, the oscilloscope, the multimeter and the host computer through the USB communication protocol, acquires waveform data and performs analysis and processing; the control processing component judges whether the light storage inverter power supply completes the test project, if not, initializes the related instruments again, and continues to test according to the selected project until the test is completed.

[0017] In the above-mentioned automatic test system for the light storage inverter power supply, the host computer is in communication connection with the light storage inverter power supply, each test interface of the ATE test device is correspondingly connected between the input / output ports of the light storage inverter power supply, the control processing component is connected to the host computer and the ATE test device, realizes the parameter adjustment and input / output control of the light storage inverter power supply through the host computer, controls the working state and parameter setting of each test instrument in the ATE test device, and receives and analyzes the voltage and current data collected by each test instrument in the ATE test device. The automatic test system in the scheme realizes the communication connection between each related device through the USB interface, sets the test parameters, detects the data, automatically performs the rapid measurement of the light storage inverter power supply, avoids the manual intervention in the automatic test, and thus improves the test efficiency and the measurement result is accurate. The circuit structure of the utility model is simple, easy to realize, low in cost, and convenient to popularize. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the structure schematic diagram of the automatic test system for the light storage inverter power supply of the utility model embodiment.

[0019] Figure 2 is the test flow chart of the automatic test system for the light storage inverter power supply of the utility model embodiment. DETAILED DESCRIPTION

[0020] The utility model will be explained in detail in combination with specific embodiment and drawings.

[0021] Please refer to Figure 1 , show an automatic test system for light storage inverter power supply 100, for the performance test of light storage inverter power supply 10, including:

[0022] The host computer 20 is connected to the communication interface of the light storage inverter power supply 10, and is used to realize data communication with the light storage inverter power supply 10.

[0023] The ATE test device 40 includes an oscilloscope 41, a PV source 42, a bidirectional DC source 43, an AC load 44, a power analyzer 45 and a multimeter 46. The ATE test device 40 is connected to the light storage inverter power supply 10 to realize automatic testing of the light storage inverter power supply 10.

[0024] The control processing component 30 is connected to the host computer 20 and the ATE test device 40, and is used to control the host computer 20, the oscilloscope 41, the PV source 42, the bidirectional DC source 43, the AC load 44, the power analyzer 45 and the multimeter 46 to process the input and output parameter and waveform data of the light storage inverter power supply 10.

[0025] Preferably, the PV source 42 is connected to the PV end of the light storage inverter power supply 10, the bidirectional DC source 43 is connected to the battery end of the light storage inverter power supply 10, and the load end of the light storage inverter power supply 10 is connected to the AC load 44.

[0026] Specifically, the control processing component 30 adopts bidirectional communication with the host computer 20, the oscilloscope 41, the PV source 42, the bidirectional DC source 43, the AC load 44, the power analyzer 45 and the multimeter 46; the host computer 20 adopts bidirectional communication with the control processing component 30 and the light storage inverter power supply 10; the oscilloscope 41 is unidirectionally connected to the PV end and the battery end of the light storage inverter power supply 10, and is used to collect the signal waveform of the PV end and the battery end of the light storage inverter power supply 10; the PV source 42 is unidirectionally connected to the PV end of the light storage inverter power supply 10, and supplies power to the PV end of the light storage inverter power supply 10; the bidirectional DC source 43 is bidirectionally connected to the battery end of the light storage inverter power supply 10, and can realize bidirectional flow of current between the bidirectional DC source 43 and the battery end of the light storage inverter power supply 10; the AC load 44 is unidirectionally connected to the load end of the light storage inverter power supply 10, and the light storage inverter power supply 10 supplies power to the AC load 44; the power analyzer 45 is unidirectionally connected to the PV end and the battery end of the light storage inverter power supply 10, and the multimeter 46 is unidirectionally connected to the load end of the light storage inverter power supply 10; the power analyzer 45 and the multimeter 46 respectively collect the voltage and current data of the PV end, the battery end and the load end of the light storage inverter power supply 10.

[0027] Specifically, the PV source 42 is used to supply power to the PV end of the light storage inverter power supply 10; the bidirectional DC source 43 is used to supply power to the battery end of the light storage inverter power supply 10; the AC load 44 is used to simulate the load condition of the light storage inverter load end; and the oscilloscope 41 is used to collect the output voltage waveform data of the bidirectional inverter power supply. The control processing component 30 controls the bidirectional DC source 43, the oscilloscope 41 and the AC load 44 through the USB communication mode; in the system, the control processing component 30 collects the PV end voltage, current and battery end voltage, current and other data and waveforms, and obtains the test results through formula calculation, thereby improving the accuracy of the test and improving the test efficiency.

[0028] Preferably, the oscilloscope 41 is connected to the PV end and the battery end of the light storage inverter power supply 10 through a passive probe.

[0029] Specifically, the oscilloscope 41 is connected to the PV end and the battery end of the light storage inverter power supply 10 through a pair of voltage probes and a pair of current probes. The pair of voltage probes are a first voltage probe and a second voltage probe, respectively. The first voltage probe is connected to the PV end of the light storage inverter power supply 10, and the second voltage probe is connected to the battery end of the light storage inverter power supply 10. The pair of current probes are a first current probe and a second current probe, respectively. The first current probe is connected to the PV end of the light storage inverter power supply 10, and the second current probe is connected to the battery end of the light storage inverter power supply 10.

[0030] Preferably, the power analyzer 45 is connected to the PV end and the battery end of the light storage inverter power supply 10, and is used to collect and record the voltage and current data of the PV end and the battery end of the light storage inverter power supply 10. The multimeter 46 is connected to the load end of the light storage inverter power supply 10, and is used to collect and record the voltage data of the load end of the light storage inverter power supply 10.

[0031] Preferably, the light storage inverter power supply 10 adopts a bidirectional inverter power supply. The load end of the light storage inverter power supply 10 is connected to the AC load 44, and the load end of the light storage inverter power supply 10 outputs AC power. The battery end of the light storage inverter power supply 10 is connected to the bidirectional DC source 43, and the battery end of the light storage inverter power supply 10 outputs DC power.

[0032] Preferably, the control processing component 30 is connected to the host computer 20, the oscilloscope 41, the PV source 42, the bidirectional DC source 43, the AC load 44, the power analyzer 45 and the multimeter 46 through a USB communication interface.

[0033] Preferably, the control processing component 30 controls the power on and off of the PV source 42 and the bidirectional DC source 43 through the USB protocol communication line, and acquires and processes the voltage and current data collected by the oscilloscope 41 and the multimeter 46.

[0034] Preferably, the control processing component 30 starts the power on of the PV source 42 and the bidirectional DC source 43, makes the PV source 42 simulate photovoltaic to provide DC input to the light storage inverter power supply 10, makes the bidirectional DC source 43 simulate a battery to provide DC input to the light storage inverter power supply 10, and makes the light storage inverter power supply 10 in a working state; the control processing component 30 acquires parameters from the power analyzer 45, the oscilloscope 41, the multimeter 46 and the host computer 20 through the USB communication protocol, acquires waveform data and performs analysis and processing; the control processing component 30 judges whether the light storage inverter power supply 10 completes the test item, and if not, initializes the related instruments again, continues the test according to the selected item, and until the test is completed.

[0035] In the embodiment, the model of the PV source 42 is preferably ITECH IT6018C. The model of the bidirectional DC source 43 is preferably ITECH IT6015C. The model of the oscilloscope 41 is preferably KEYSIGHT DSOX 2014A. The model of the AC load 44 is preferably ITECH IT8616. The model of the power analyzer 45 is preferably EVERFINE PF8000. The model of the multimeter 46 is preferably KEYSIGHT 34461A.

[0036] Specifically, when the light storage inverter power supply automatic test system is working, first, the initialization state of each instrument is detected, and after determining that it can be tested, the control processing component 30 controls the PV source 42 and the bidirectional DC source 43 to power on the light storage inverter power supply 10 and controls the AC load 44 to set the standby load parameters. The power analyzer 45 records the real-time data of the PV end and the battery end during this period, the multimeter 46 records the real-time data of the load end during this period, the host computer 20 communicates with the light storage inverter power supply 10 to acquire real-time data and records them in the folder through the control processing component 30, sets the relevant parameters according to the different test items, and after the test item is completed, the control processing component 30 controls the PV source 42 and the bidirectional DC source 43 to power off. The oscilloscope 41 acquires the corresponding waveform data according to the different test items during the test process, and finally the control processing component 30 processes the acquired data and waveform and saves them to the folder of the corresponding test item, thereby completing the test.

[0037] The light storage inverter power supply automatic test system comprises the following steps:

[0038] The control processing component 30 controls the PV source 42 to set output voltage and output current, controls the start and stop of the light storage inverter power supply device under test, and the preset voltage is not higher than the rated input voltage of the PV terminal of the device under test.

[0039] The control processing component 30 controls the bidirectional DC source 43 to set input voltage and current, controls the output power of the DC terminal of the device under test, and makes the DC terminal of the device under test whether to be loaded, and the preset power is not higher than the rated output power of the DC terminal of the device under test.

[0040] The control processing component 30 controls the AC load 44 to set AC output power, and makes the AC terminal of the device under test whether to be loaded, and the preset power is not higher than the rated output power of the AC terminal of the device under test.

[0041] The host computer 20 communicates with the device under test through the control processing component 30, controls the device under test to modify related parameters and running state, and modifies the state of the device under test according to the test project. The modification of parameters needs to meet the rated range of the device under test.

[0042] The oscilloscope 41 is connected with the control processing component 30 through USB communication mode, collects data waveforms according to the test project, for example, load start waveform test. The oscilloscope 41 needs to be connected with the PV terminal and the AC terminal of the device under test through two high-voltage differential probes CYBERTEK DP6150. The oscilloscope 41 is set to trigger mode through the control processing component 30, triggers the channel connected with the AC terminal, the control processing component 30 controls the PV source 42 to set output voltage and current, and controls the AC load 44 to set AC output power. After the device under test is started, the oscilloscope 41 acquires the waveform, and the start timing needs to meet the specification requirements of the device under test.

[0043] The power analyzer 45 is connected with the control processing component 30 through USB communication mode, collects related parameters of the device under test according to the test project, for example, the PV voltage and current accuracy test of the host computer 20. The power analyzer 45 is connected with the PV terminal of the device under test through a voltage probe, and is clamped on the PV terminal input line of the device under test through a current probe. The control processing component 30 acquires data parameters communicated between the host computer 20 and the device under test in real time. The PV terminal accuracy of the host computer 20 is obtained by comparing the data parameters acquired by the power analyzer 45. The PV terminal voltage and PV terminal current accuracy collected by the host computer 20 need to meet the specification requirements of the device under test.

[0044] The multimeter 46 is connected with the control processing component 30 through a USB communication mode, collects relevant parameters of the to-be-tested equipment according to a test item, for example, a DC terminal charging efficiency, the multimeter 46 is connected at a DC terminal of the to-be-tested equipment to collect an output voltage parameter, the power analyzer 45 is connected with a PV terminal of the to-be-tested equipment through a voltage probe to collect a voltage parameter, and is connected with the PV terminal and a DC terminal of the to-be-tested equipment through a current probe to collect a current parameter, the DC terminal charging efficiency is obtained according to the measured data parameter, and the DC terminal charging efficiency needs to meet a specification requirement of the to-be-tested equipment.

[0045] The light storage inverter power supply automatic test system takes the control processing component 30 as a carrier, controls the host computer 20, the light storage inverter power supply 10 and the oscilloscope 41, the PV source 42, the bidirectional DC source 43, the alternating current load 44, the power analyzer 45 and the multimeter 46 and the like, through running the test system, repeatedly operating the above related operations according to the selected test item, saves data and waveforms to a local folder of the control processing component 30, and stops running the operating system after completing the test, so that the light storage inverter power supply automatic test system can efficiently and accurately realize a series of tedious work, and improves test efficiency and data accuracy.

[0046] The test process of the light storage inverter power supply automatic test system in the embodiment is as shown in Figure 2

[0047] In the light storage inverter power supply automatic test system 100, the host computer 20 is in communication connection with the light storage inverter power supply 10, each test interface of the ATE test equipment 40 is correspondingly connected between input / output ports of the light storage inverter power supply 10, the control processing component 30 is connected to the host computer 20 and the ATE test equipment 40, the parameter adjustment and input / output control of the light storage inverter power supply 10 are realized through the host computer 20, meanwhile, the working state and parameter setting of each test instrument in the ATE test equipment 40 are controlled, and the voltage and current data collected by each test instrument in the ATE test equipment 40 are received and analyzed. The automatic test system in the scheme realizes communication connection between each related device through a USB interface, sets test parameters, detects data, automatically performs rapid measurement on the light storage inverter power supply 10, avoids manual intervention in the automatic test, and thus improves test efficiency and measurement accuracy. The circuit structure of the utility model is simple, easy to realize, low in cost and convenient to popularize.

[0048] It should be noted that the utility model is not limited to the above-mentioned embodiments, and other changes can be made by those skilled in the art according to the creative spirit of the utility model, and the changes made according to the creative spirit of the utility model should be included in the range of protection claimed by the utility model.​

Claims

1. A photovoltaic energy storage inverter power supply automatic test system for performance test of photovoltaic energy storage inverter power supply, characterized in that, The application relates to a photovoltaic (PV) storage inverter power supply test system. The upper computer is connected to a communication interface of the PV storage inverter power supply, and is used for realizing data communication between the PV storage inverter power supply; the ATE test device comprises an oscilloscope, a PV source, a bidirectional direct-current source, an alternating-current load, a power analyzer and a multimeter; the oscilloscope is unidirectionally connected to a PV end and a battery end of the PV storage inverter power supply; the PV source is unidirectionally connected to the PV end of the PV storage inverter power supply; the bidirectional direct-current source is bidirectionally connected to the battery end of the PV storage inverter power supply; the alternating-current load is unidirectionally connected to a load end of the PV storage inverter power supply, and the PV storage inverter power supply supplies power to the alternating-current load; the power analyzer is unidirectionally connected to the PV end and the battery end of the PV storage inverter power supply; the multimeter is unidirectionally connected to the load end of the PV storage inverter power supply; the power analyzer and the multimeter respectively collect voltage and current data of the PV end, the battery end and the load end of the PV storage inverter power supply; the ATE test device is connected to the PV storage inverter power supply, so as to realize automatic test on the PV storage inverter power supply. The control processing assembly is connected to the upper computer and the ATE test device, and is used for controlling the upper computer, the oscilloscope, the PV source, the bidirectional direct-current source, the alternating-current load, the power analyzer and the multimeter to process parameters and waveform data of input and output of the PV storage inverter power supply. The PV source is connected to the PV end of the PV storage inverter power supply; the bidirectional direct-current source is connected to the battery end of the PV storage inverter power supply; and the load end of the PV storage inverter power supply is connected to the alternating-current load.

2. The optical storage inverter power supply automatic test system of claim 1, wherein, The oscilloscope is connected to the PV end and the battery end of the PV storage inverter power supply through a passive probe.

3. The optical storage inverter power supply automatic test system of claim 1, wherein, The power analyzer is connected to the PV end and the battery end of the PV storage inverter power supply, and is used for collecting and recording voltage and current data of the PV end and the battery end of the PV storage inverter power supply; and the multimeter is connected to the load end of the PV storage inverter power supply, and is used for collecting and recording voltage data of the load end of the PV storage inverter power supply.

4. The optical storage inverter power supply automatic test system of claim 1, wherein, The PV storage inverter power supply adopts a bidirectional inverter power supply; the load end of the PV storage inverter power supply is connected to the alternating-current load; the load end of the PV storage inverter power supply outputs alternating current; the battery end of the PV storage inverter power supply is connected to the bidirectional direct-current source; and the battery end of the PV storage inverter power supply outputs direct current.

5. The optical storage inverter power supply automatic test system of claim 1, wherein, The control processing assembly is connected to the upper computer, the oscilloscope, the PV source, the bidirectional direct-current source, the alternating-current load, the power analyzer and the multimeter through a USB communication interface.

6. The optical storage inverter power supply automatic test system of claim 1, wherein, The control processing assembly controls power-on and power-off of the PV source and the bidirectional direct-current source through a USB protocol communication line, and acquires and processes voltage and current data collected by the oscilloscope and the multimeter.

7. The optical storage inverter power supply automatic test system of claim 6, wherein, ​ 8. The optical storage inverter power supply automatic test system of claim 7, wherein, The control processing component starts the PV source and the bidirectional DC source power-on, makes the PV source simulate photovoltaic to provide DC input to the light storage inverter power supply, makes the bidirectional DC source simulate battery to provide DC input to the light storage inverter power supply, so that the light storage inverter power supply is in working condition; the control processing component obtains parameters from the power analyzer, the oscilloscope, the multimeter and the host computer through the USB communication protocol, obtains waveform data and performs analysis and processing; the control processing component judges whether the light storage inverter power supply completes the test item, if not, initializes the related instruments again, continues to test according to the selected item, until the test is completed.

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